阅读说明：本技术 基于互联网的智能超高压液压泵 (Intelligent ultrahigh-pressure hydraulic pump based on Internet ) 是由 张玉成 于 2021-06-10 设计创作，主要内容包括：本发明属于液压泵技术领域,公开了一种基于互联网的智能超高压液压泵,包括远程服务器和智能超高压液压泵。所述智能超高压液压泵,由液压系统、智能系统、把手架和风冷却器组成；所述液压系统由泵体模块、油箱模块、阀组模块组成；所述智能系统包括电控单元、伺服电机、超高压传感器、温度传感器、操作手柄、触摸屏、通讯单元；所述电控单元通过所述通讯单元基于互联网与远程服务器通讯,向远程服务器上传工作数据。本发明针对现有超高压液压泵智能化程度低、输出压力波动性大、无法实现在线控制和管理、紧凑性不高,整体体积大等问题,提出一种结构紧凑,整体体积小,智能化程度高、输出压力稳定性好,又可以联网监控的超高压液压泵。(The invention belongs to the technical field of hydraulic pumps, and discloses an intelligent ultrahigh-pressure hydraulic pump based on the Internet. The intelligent ultrahigh pressure hydraulic pump consists of a hydraulic system, an intelligent system, a handle frame and an air cooler; the hydraulic system consists of a pump body module, an oil tank module and a valve bank module; the intelligent system comprises an electric control unit, a servo motor, an ultrahigh pressure sensor, a temperature sensor, an operating handle, a touch screen and a communication unit; and the electronic control unit is communicated with the remote server through the communication unit based on the internet and uploads working data to the remote server. The invention provides an ultrahigh pressure hydraulic pump which has the advantages of compact structure, small overall volume, high intelligent degree, good output pressure stability and capability of networking monitoring, aiming at the problems that the existing ultrahigh pressure hydraulic pump has low intelligent degree, large output pressure fluctuation, no realization of on-line control and management, low compactness, large overall volume and the like.)

1. An intelligent ultrahigh-pressure hydraulic pump based on the Internet comprises a remote server and the intelligent ultrahigh-pressure hydraulic pump, and is characterized in that the intelligent ultrahigh-pressure hydraulic pump consists of a hydraulic system, an intelligent system, a handle frame and an air cooler, wherein the hydraulic system consists of a pump body module, an oil tank module and a valve group module;

the intelligent system comprises an electric control unit, a servo motor, an ultrahigh pressure sensor, a temperature sensor, an operating handle, a touch screen and a communication unit, wherein the electric control unit is communicated with a remote server through the communication unit based on the internet and uploads working data of the intelligent ultrahigh pressure hydraulic pump to the remote server;

the ultrahigh pressure sensor is arranged in the valve group module and used for detecting the external output pressure of the hydraulic system;

the temperature sensors comprise a motor temperature sensor and an oil tank temperature sensor which are respectively arranged on the shell of the servo motor and in the oil tank and used for detecting the working temperature of the motor and the temperature of oil liquid;

the operating handle is provided with a button for starting or stopping the intelligent ultrahigh pressure hydraulic pump;

the touch screen is used for inputting a setting signal and displaying the working state of the intelligent ultrahigh pressure hydraulic pump;

the driver of the servo motor, the ultrahigh pressure sensor, the temperature sensor, the key switch on the operating handle and the touch screen are respectively connected with the electric control unit;

the electric control unit regulates and controls the rotating speed of the servo motor in real time according to the pressure signal input by the ultrahigh pressure sensor and the set output pressure so as to control the output pressure of the hydraulic pump, and starts or stops the air cooler according to the temperature signal input by the temperature sensor.

2. The intelligent ultrahigh-pressure hydraulic pump according to claim 1, wherein an oil tank module is used as a general support and mounting base of the ultrahigh-pressure hydraulic pump, and a flat plate type oil tank cover plate is arranged as the rest of the components of the hydraulic system, a servo motor and a mounting base plate of a handle frame; the valve group module and the pump body module are respectively arranged at the upper side and the lower side of the oil tank cover plate, and the pump body module is integrally arranged in the oil tank;

the output end of the servo motor faces downwards, the servo motor is directly fixed on the oil tank cover plate through a flange on a shell of the servo motor, and the output shaft of the servo motor downwards penetrates through the oil tank cover plate to be directly connected with the pump body module;

the air cooler is fixed on the position, corresponding to the servo motor, of the oil tank cover plate, the air outlet direction of the air cooler faces back to the servo motor, and the bottom of a radiating fin of the air cooler is in contact with the oil tank cover plate for heat exchange.

3. The intelligent ultrahigh-pressure hydraulic pump according to claim 2, wherein the oil tank module comprises a groove-type oil tank and a flat-type oil tank cover plate, the edge profile of the oil tank cover plate is matched with the upper edge of the oil tank, the oil tank cover plate and the oil tank are connected through screws, and the pump body module is arranged below the oil tank cover plate and is integrally arranged in the oil tank;

the valve bank module, the servo motor, the air cooler and the electric cabinet for accommodating the electric control unit are arranged above the oil tank cover plate;

servo motor sets up in the top middle part of oil tank cover board partial to one side, and air cooler sets up in servo motor's rear side, and air cooler's air-out side is towards servo motor, and valves module and electric cabinet set up respectively in servo motor and air cooler's both sides, and handle frame bottom and oil tank cover board edge connection, handle frame are frame construction, cover valves module, air cooler module, servo motor in it.

4. An intelligent ultrahigh-pressure hydraulic pump according to claim 2, characterized in that a central cam is arranged right below the servo motor as a power machine member of the pump body module, the central cam is directly connected with an output shaft of the servo motor, and each plunger pair is arranged around the central cam as a core machine member of the pump body module.

5. The intelligent ultrahigh-pressure hydraulic pump according to claim 4, wherein the pump body module comprises a pump body flange, a pump body sleeve, a pump head component, a pump body disc, a high-pressure plunger pair, a low-pressure plunger pair and a filter screen film; the high-pressure plunger pair and the low-pressure plunger pair are both arranged below the pump body disc, the plunger pairs are annularly arranged around the center of the pump body disc, a central cam is arranged at the annular center surrounded by each plunger pair, and an oil outlet of each plunger pair upwards penetrates through the pump body disc to be connected with a corresponding liquid inlet on the pump head component respectively; a pump body sleeve is arranged between the pump body flange and the pump body disc, the pump body sleeve penetrates through the pump head part, the pump body flange is fixedly connected with the pump head part, and the pump head part is fixedly connected with the pump body disc; the central cam is fixedly connected with a rotating shaft matched with an output shaft of the servo motor.

6. The intelligent ultrahigh-pressure hydraulic pump according to claim 5, wherein the pump head component is provided with a low-pressure output interface, a solenoid valve pipeline interface, a high-pressure output interface, a pump body module oil return opening, a low-pressure pipeline and a high-pressure input pipeline of the pump body module; an oil outlet of the low-pressure plunger pair is connected with an input end of the low-pressure pipeline; two oil outlets of the low-pressure pipeline are respectively connected with the low-pressure output interface and the electromagnetic valve pipeline interface; the third output end of the low-pressure pipeline is connected with the output end of the high-pressure input pipeline through a first pressure regulating valve; the output end of the high-pressure input pipeline is connected with an oil inlet of the high-pressure plunger pair; the oil outlet of the high-pressure plunger pair is connected with the high-pressure output interface, and the low-pressure pipeline is connected with the oil return port of the pump body module through a low-pressure unloading valve.

7. The intelligent ultrahigh pressure hydraulic pump of claim 6 wherein the pump head components comprise a casting and a pair of high pressure blocks, the low pressure line and high pressure input line being disposed inside the casting;

the low-pressure pipeline consists of ten sections of pipelines, wherein a first section of pipeline is parallel to the front and rear horizontal edges of the casting, the first end of the first section of pipeline is connected with an oil return port of the pump body module, and the second end of the first section of pipeline is connected with a first oil port of the low-pressure unloading valve; the second section of pipeline is parallel to the first section of pipeline, the first end of the second section of pipeline is connected with the second oil port of the low-pressure unloading valve, the second end of the second section of pipeline is connected with the third section of pipeline, and meanwhile, the second section of pipeline is communicated with the third low-pressure plunger pair oil outlet; the third section of pipeline is vertical to the second section of pipeline, the first end of the third section of pipeline is fixed at the inner edge of the casting in a sealing way by a hexagon socket head cap screw, and the second end of the third section of pipeline is connected with the fourth section of pipeline; the first end of the fourth section of pipeline is fixed at the inner edge of the casting in a sealing and inclining way by an inner hexagon screw, and the second end of the fourth section of pipeline is connected with the first end of the fifth section of pipeline; the second end of the fifth section of pipeline is connected with the inlet of the first one-way valve, and the middle of the fifth section of pipeline is connected with the first end of the sixth section of pipeline; the sixth section of pipeline is parallel to the first section of pipeline, the second end of the sixth section of pipeline is fixed at the inner edge of the casting in a sealing mode through an inner hexagon screw, and the middle of the sixth section of pipeline is communicated with a fourth low-pressure plunger pair oil outlet; the seventh section of pipeline is vertical to the sixth section of pipeline, the first end of the seventh section of pipeline is connected with the sixth section of pipeline, and the second end of the seventh section of pipeline is connected with the electromagnetic valve pipeline interface; the eighth section of pipeline is obliquely arranged, the first end of the eighth section of pipeline is connected with the outlet of the first one-way valve, and the second end of the eighth section of pipeline is hermetically fixed at the inner edge of the casting by an inner hexagon screw; the first end of the ninth section of pipeline is connected with the third oil port of the low-pressure unloading valve and is communicated with the eighth section of pipeline, and the second end of the ninth section of pipeline is connected with an oil inlet of the first pressure regulating valve; the center line of the tenth section of pipeline is superposed with the center line of the sixth section of pipeline, the tenth section of pipeline is vertically intersected with the ninth section of pipeline, the first end of the tenth section of pipeline is connected with the first low-pressure plunger pair oil outlet, and the second end of the tenth section of pipeline is connected with the low-pressure output interface;

the high-pressure input pipeline consists of four sections of pipelines, wherein the first section of high-pressure input pipeline is arranged at the position which is slightly to the right in front of the casting and is parallel to the front horizontal edge and the rear horizontal edge of the casting, the first end of the first section of high-pressure input pipeline is connected with the outlet of a first pressure regulating valve, the outlet of the first pressure regulating valve is positioned right below the first pressure regulating valve, and the second end of the first section of high-pressure input pipeline is connected with the first end of the second section of high-pressure input pipeline; the second section of high-pressure input pipeline is positioned at the front position of the right side in the casting, the second section of high-pressure input pipeline is vertical to the first section of high-pressure input pipeline, and the second end of the second section of high-pressure input pipeline is connected with the first high-pressure plunger pair oil inlet; the third section of high-pressure input pipeline is vertical to the second section of high-pressure input pipeline, and two ends of the third section of high-pressure input pipeline are respectively communicated with the second section of high-pressure input pipeline and the fourth section of high-pressure input pipeline; the fourth section of high-pressure input pipeline is parallel to the second section of high-pressure input pipeline, the first end of the fourth section of high-pressure input pipeline is fixed on the inner front wall of the casting in a sealing mode, and the second end of the fourth section of high-pressure input pipeline is connected with the oil inlet of the second high-pressure plunger pair;

and the high-pressure plunger pair is connected with the high-pressure output interface through a pipeline inside the high-pressure block.

8. The intelligent ultrahigh-pressure hydraulic pump according to claim 5, wherein the valve bank module and the electric cabinet are respectively arranged at two sides of the air cooler and the servo motor, the handle frame is of a frame structure, and the valve bank module, the servo motor, the electric cabinet and the air cooler are covered in the handle frame of the frame structure.

9. The intelligent ultrahigh-pressure hydraulic pump according to claim 5, wherein the high-pressure plunger pair comprises a plunger and a plunger body, a plunger cavity, a pressurizing cavity, a low-pressure liquid inlet channel and a high-pressure liquid outlet channel are arranged in the plunger body, the plunger is assembled in the plunger cavity, the plunger cavity is arranged on a central axis of the plunger body, the tail end of the plunger cavity is communicated with the pressurizing cavity through a through hole with a smaller aperture than that of the plunger cavity, the pressurizing cavity is vertically arranged and is located at a position opposite to the tail end of the plunger cavity, a low-pressure check steel ball is arranged at the bottom of the pressurizing cavity, and a low-pressure check pressure spring is arranged in the pressurizing cavity;

the top of the pressurizing cavity is provided with an olive head, and the lower end of the olive head is hermetically connected with the upper end of the pressurizing cavity; a high-pressure liquid outlet channel is arranged in the olive head, the lower end of the high-pressure liquid outlet channel is connected with the pressurizing cavity, the upper end of the high-pressure liquid outlet channel is connected with the high-pressure outlet connector, a high-pressure check steel ball is arranged in the middle of the high-pressure liquid outlet channel, a top rod is arranged above the high-pressure check steel ball, the top rod is in sliding fit with the inner wall of the high-pressure liquid outlet channel, a pore is formed between the top rod and the high-pressure check steel ball, a high-pressure check pressure spring is sleeved on the top rod, the top rod is of a hollow tube structure, and a hole is formed in the top rod;

the low-pressure liquid inlet channel is composed of five sections, the low-pressure liquid inlet is located above the plunger cavity, the first section of the low-pressure liquid inlet channel is located above the plunger cavity, the first end of the low-pressure liquid inlet channel is connected with the low-pressure liquid inlet, the second end of the low-pressure liquid inlet channel extends to one side of the plunger cavity towards the side face, the second section of the low-pressure liquid inlet channel is located at the side of the plunger cavity, the upper end of the low-pressure liquid inlet channel is connected with the first section, the lower end of the low-pressure liquid inlet channel is connected with the first end of the third section, the third section of the low-pressure liquid inlet channel is located below the plunger cavity, the second end of the third section of the low-pressure liquid inlet channel extends to the position right below the plunger cavity towards the middle, the fourth section of the low-pressure liquid inlet channel is located below the plunger cavity, the first end of the fourth section of the low-pressure liquid inlet channel is connected with the first end of the third section of the low-pressure liquid inlet channel, the third section of the low-pressure liquid inlet channel is located right below the plunger cavity, the third section of the low-pressure inlet channel, the second end of the third section of the low-pressure inlet channel is located right below the plunger cavity, the second end of the third section, the third section of the second end of the third section, the second end of the third section extends to the third section, the second end of the third section extends to the low-pressure inlet channel extends to the low-pressure channel, and the low-pressure cavity, and the low-pressure channel, the second end of the low-pressure channel, the.

10. The intelligent ultrahigh-pressure hydraulic pump according to claim 1, wherein the handle frame is mainly composed of two trapezoidal main frames which are symmetrically arranged, the two main frames are connected through a cross beam, the touch screen is arranged between oblique edges of the two main frames, and the servo motor driver is arranged on a top cross beam of the handle frame.

Technical Field

The invention belongs to the technical field of hydraulic pumps, and relates to an ultrahigh pressure hydraulic pump, in particular to an intelligently controlled ultrahigh pressure hydraulic pump.

Background

The ultrahigh pressure hydraulic pump is mainly applied to power sources of various hydraulic machines, and realizes pressurization, pressurization and pressure maintaining of metal and non-metal products. Meanwhile, the hydraulic cylinder is widely applied to various hydraulic machines to realize the functions of pulling, pressing, bending, twisting and shearing. The ultra-high pressure hydraulic pump station is limited by the ultra-high pressure hydraulic pump station technology, is limited to a small flow range at present, and is mostly a two-stage pump structure formed by combining a low-pressure pump and a supercharger. On one hand, the supercharger has small output port, large resistance and poor self-absorption capacity, and meanwhile, in order to meet the requirements of quick and slow movement of an actuating mechanism, an ultrahigh pressure pump and a low-pressure high-flow pump are generally required to be combined into a secondary pump for use. The existing ultrahigh pressure hydraulic pump station usually adopts a control mode of a manual stop valve type, more than two field personnel are usually required to be matched in the using process to complete related work, and the labor cost is high.

The ultrahigh pressure hydraulic pump works for a long time (for example, 200 MPa) under an extremely high pressure environment due to the particularity of the ultrahigh pressure hydraulic pump, when the hydraulic pressure is strongly oscillated (namely the output hydraulic pressure is greatly changed), hydraulic elements in the high pressure pump inevitably suffer from considerable influence, particularly some pressure regulating valves, when the hydraulic pressure is changed, the opening size of the ultrahigh pressure hydraulic pump is changed along with the change of the hydraulic pressure, so that the hydraulic pressure is further uncontrollably changed, the accuracy of the output pressure is greatly reduced, the execution element connected with the ultrahigh pressure hydraulic pump cannot realize effective control, the quality control difficulty of a produced product (the processing effect) is greatly increased, the service life is greatly shortened, the production cost is high, and the market is difficult to open.

Meanwhile, the intelligent informatization degree of the ultrahigh pressure hydraulic pump station in the existing market is not high, and the ultrahigh pressure hydraulic pump station does not have a corresponding data storage function and a remote monitoring function.

In view of the above situation, a reliable ultrahigh pressure hydraulic pump with a compact size is needed, and a corresponding control system is added on the basis to realize closed-loop control of the hydraulic pressure of the system, improve the stability of the system, and further realize stable output of the hydraulic pressure while prolonging the service life. Furthermore, related hydraulic data can be collected and stored in real time and synchronized to a monitoring platform database, so that real-time monitoring and historical query are possible.

The technical problems to be solved by the invention are as follows:

1. the existing ultrahigh pressure hydraulic pump adopts a proportional valve control mode, the intelligent degree is low, and the output pressure fluctuation is large.

2. The existing ultrahigh pressure hydraulic pump can not realize on-line control and management.

3. Because the pipeline of superhigh pressure hydraulic pump is complicated and complicated, the valve is many, the plunger pair needs good reasons such as heat dissipation again, so structural design degree of difficulty is high on the whole, and current superhigh pressure hydraulic pump compactness is not high, and whole is bulky.

4. The existing ultrahigh-pressure plunger pair adopts a diaphragm one-way valve, and although the oil way structure is relatively simple, the whole volume is large, the service life is short, and the stability of output pressure is poor.

Disclosure of Invention

The invention aims to solve the problems of the existing ultrahigh pressure hydraulic pump, and provides the ultrahigh pressure hydraulic pump which is compact in structure, small in integral volume, high in intelligent degree, good in output pressure stability and capable of being monitored in a networking mode.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: an intelligent ultrahigh-pressure hydraulic pump based on the Internet comprises a remote server and the intelligent ultrahigh-pressure hydraulic pump.

The intelligent ultrahigh pressure hydraulic pump is composed of a hydraulic system, an intelligent system, a handle frame and an air cooler.

The hydraulic system is composed of a pump body module, an oil tank module and a valve group module.

The intelligent system comprises an electric control unit, a servo motor, an ultrahigh pressure sensor, a temperature sensor, an operating handle, a touch screen, a communication unit and the like. The electronic control unit is communicated with the remote server through the communication unit based on the internet, and uploads working data (on-off state, output pressure, working temperature, working time and the like) of the intelligent ultrahigh-pressure hydraulic pump to the remote server.

The ultrahigh pressure sensor is arranged in the valve group module and used for detecting the external output pressure of the hydraulic system.

The temperature sensor comprises a motor temperature sensor and an oil tank temperature sensor which are respectively arranged on the shell of the servo motor and in the oil tank. The device is used for detecting the working temperature of the motor and the temperature of oil.

The operating handle is provided with a button for starting or stopping the intelligent ultrahigh pressure hydraulic pump.

The touch screen is used for inputting a setting signal and displaying the working state of the intelligent ultrahigh pressure hydraulic pump.

And the driver of the servo motor, the ultrahigh pressure sensor, the temperature sensor, the key switch on the operating handle and the touch screen are respectively connected with the electric control unit.

The electric control unit regulates and controls the rotating speed of the servo motor in real time according to the pressure signal input by the ultrahigh pressure sensor and the set output pressure so as to control the output pressure of the hydraulic pump, and starts or stops the air cooler according to the temperature signal input by the temperature sensor.

On one hand, the intelligent ultrahigh pressure hydraulic pump detects the instant output pressure of the hydraulic system through the ultrahigh pressure sensor by the electric control unit, and completes the regulation and control of the output pressure of the hydraulic pump in a mode of regulating and controlling the rotating speed of the servo motor in real time, thereby replacing the common proportional valve control mode. The stability of ultrahigh pressure output is greatly improved, the error of output pressure can be kept between +/-0.5 MPa, the working environment of hydraulic elements in the ultrahigh pressure output device is improved, and the service life of the hydraulic elements is greatly prolonged. Meanwhile, hydraulic pressure is directly regulated and controlled by an intelligent system, and personnel do not need to independently adjust the hydraulic pressure, so that the consumption of labor resources is greatly reduced. And, because the proportion valve that has abandoned easy damage, practiced thrift the cost of maintenance of hydraulic pump, effectively improved the whole life of hydraulic pump.

On the other hand, the intelligent ultrahigh pressure hydraulic pump is provided with a local communication unit and a remote server, and the electric control unit transmits the working data of the intelligent ultrahigh pressure hydraulic pump to the remote server in real time through the communication unit, so that the working condition of the pump station can be known remotely in real time, relevant important information is stored in the remote server, and a practical and feasible solution is provided for subsequent historical inquiry.

Further, aiming at the problems of low structure compactness and large integral volume of the conventional ultrahigh pressure hydraulic pump, the invention systematically optimizes all the components of the ultrahigh pressure hydraulic pump.

The oil tank module is used as a general support and installation foundation of the ultrahigh-pressure hydraulic pump. And a flat plate type oil tank cover plate is arranged to serve as an installation base plate for the rest of components of the hydraulic system, the servo motor and the handle frame. The valve group module and the pump body module are respectively arranged at the upper side and the lower side of the oil tank cover plate, so that the valve group module and the pump body module are separated by only one plate, and the oil way and the total occupied space of the oil way and the pump body module are shortened. Meanwhile, the pump body module is integrally arranged in the oil tank, hydraulic oil is used for radiating the plunger pair in the pump body module skillfully, and a cooling system is not required to be additionally designed for the plunger pair. Thereby obtaining a more compact hydraulic pump structure.

The output end of the servo motor is downward and is directly fixed on the oil tank cover plate through a flange on the shell of the servo motor, and the output shaft of the servo motor downwards penetrates through the oil tank cover plate to be directly connected with the pump body module.

The air cooler is directly fixed on the oil tank cover plate at a position corresponding to the servo motor, and the air outlet direction of the air cooler faces back to the servo motor. The cooling of the oil tank is realized by the contact heat exchange of the bottom of the radiating fin and the oil tank cover plate, and meanwhile, the servo motor is radiated by a fan of the air cooler. The structure directly arranges the servo motor and the air cooler on the oil tank cover plate in a simultaneous manner and corresponds the servo motor and the air cooler, and realizes the heat dissipation of the oil tank and the servo motor through the air cooler on the premise of not arranging any other heat conduction structures except the air cooler. The structure layout is simplified to the utmost extent, and the whole volume is smaller.

Specifically, the oil tank module comprises a groove type oil tank and a flat plate type oil tank cover plate, the edge profile of the oil tank cover plate is matched with the upper edge of the oil tank, and the oil tank cover plate and the flat plate type oil tank cover plate are connected through screws. The pump body module is arranged below the oil tank cover plate and is integrally arranged in the oil tank (hydraulic oil is used for cooling an ultrahigh-pressure plunger pair in the pump body module skillfully, and meanwhile, the oil way is convenient to design and the total length of the oil way is shortened). The valve bank module, the servo motor, the air cooler and the electric cabinet for accommodating the electric control unit are arranged above the oil tank cover plate. Servo motor sets up the top middle part of lapping in the oil tank and is partial to one side, air cooler sets up the rear side at servo motor, air cooler's air-out side is towards servo motor, valves module and electric cabinet set up the both sides at servo motor and air cooler respectively, handle frame bottom and oil tank cover plate edge connection, the handle frame is frame construction, with the valves module, air cooler module, servo motor covers in it (earn utensil protection valves module, air cooler module, when servo motor, do not influence their maintenance again and change).

And furthermore, the structure of the pump body module is optimized, a central cam is arranged right below the servo motor and is used as a power machine part of the pump body module, the central cam is connected with an output shaft of the servo motor, each plunger pair which is used as a core machine part of the pump body module is arranged around the central cam, and the central cam is used for driving each plunger pair, so that the volume of the pump body module is smaller.

Specifically, the pump body module comprises a pump body flange, a pump body sleeve, a pump head component, a pump body disc, a high-pressure plunger pair, a low-pressure plunger pair and a filter screen film. The high-pressure plunger pair and the low-pressure plunger pair are both arranged below the pump body disc, the plunger pairs are annularly arranged around the center of the pump body disc, a central cam is arranged at the annular center around each plunger pair, and an oil outlet of each plunger pair upwards penetrates through the pump body disc to be connected with a corresponding liquid inlet in the pump head component. And a pump body sleeve is arranged between the pump body flange and the pump body disc, the pump body sleeve penetrates through the pump head part, the pump body flange is fixedly connected with the pump head part, and the pump head part is fixedly connected with the pump body disc. The central cam is fixedly connected with a rotating shaft matched with an output shaft of the servo motor.

Furthermore, the pump head component is provided with a low-pressure output interface, an electromagnetic valve pipeline interface, a high-pressure output interface, a pump body module oil return opening, a low-pressure pipeline and a high-pressure input pipeline of the pump body module. An oil outlet of the low-pressure plunger pair is connected with an input end of the low-pressure pipeline; two output ends of the low-pressure pipeline are respectively connected with the low-pressure output interface and the electromagnetic valve pipeline interface; the third output end of the low-pressure pipeline is connected with the input end of the high-pressure input pipeline through a first pressure regulating valve; the output end of the high-pressure input pipeline is connected with an oil inlet of the high-pressure plunger pair; the oil outlet of the high-pressure plunger pair is connected with the high-pressure output interface, and the low-pressure pipeline is connected with the oil return port of the pump body module through a low-pressure unloading valve.

Further, the pump head components include a casting and a pair of high pressure blocks. The low-pressure pipeline and the high-pressure input pipeline are arranged inside the casting.

The low-pressure pipeline consists of ten sections of pipelines. The first section of pipeline is parallel to the front and rear horizontal edges of the casting, the first end of the first section of pipeline is connected with an oil return port of the pump body module, and the second end of the first section of pipeline is connected with a first oil port of the low-pressure unloading valve; the second section of pipeline is parallel to the first section of pipeline, the first end of the second section of pipeline is connected with the second oil port of the low-pressure unloading valve, the second end of the second section of pipeline is connected with the third section of pipeline, and meanwhile, the second section of pipeline is communicated with the third low-pressure plunger pair oil outlet; the third section of pipeline is vertical to the second section of pipeline, the first end of the third section of pipeline is fixed at the inner edge of the casting in a sealing way by a hexagon socket head cap screw, and the second end of the third section of pipeline is connected with the fourth section of pipeline; the first end of the fourth section of pipeline is fixed at the inner edge of the casting in a sealing and inclining way by an inner hexagon screw, and the second end of the fourth section of pipeline is connected with the first end of the fifth section of pipeline; the second end of the fifth section of pipeline is connected with the inlet of the first one-way valve, and the middle of the fifth section of pipeline is connected with the first end of the sixth section of pipeline; the sixth section of pipeline is parallel to the first section of pipeline, the second end of the sixth section of pipeline is fixed at the inner edge of the casting in a sealing mode through an inner hexagon screw, and the middle of the sixth section of pipeline is communicated with a fourth low-pressure plunger pair oil outlet; the seventh section of pipeline is vertical to the sixth section of pipeline, the first end of the seventh section of pipeline is connected with the sixth section of pipeline, and the second end of the seventh section of pipeline is connected with the electromagnetic valve pipeline interface; the eighth section of pipeline is obliquely arranged, the first end of the eighth section of pipeline is connected with the outlet of the first one-way valve, and the second end of the eighth section of pipeline is hermetically fixed at the inner edge of the casting by an inner hexagon screw; the first end of the ninth section of pipeline is connected with the third oil port of the low-pressure unloading valve and is communicated with the eighth section of pipeline, and the second end of the ninth section of pipeline is connected with an oil inlet of the first pressure regulating valve; the center line of the tenth section of pipeline coincides with the center line of the sixth section of pipeline, the tenth section of pipeline is vertically intersected with the ninth section of pipeline, the first end of the tenth section of pipeline is connected with the first low-pressure plunger pair oil outlet, and the second end of the tenth section of pipeline is connected with the low-pressure output interface.

The high-pressure input pipeline consists of four sections of pipelines. The first section of high-pressure input pipeline is arranged at a position which is slightly to the right in front of the casting and is parallel to the front horizontal edge and the rear horizontal edge of the casting, the first end of the first section of high-pressure input pipeline is connected with the outlet of a first pressure regulating valve, the outlet of the first pressure regulating valve is positioned right below the first pressure regulating valve, and the second end of the first section of high-pressure input pipeline is connected with the first end of the second section of high-pressure input pipeline; the second section of high-pressure input pipeline is positioned at the front position of the right side in the casting, the second section of high-pressure input pipeline is vertical to the first section of high-pressure input pipeline, and the second end of the second section of high-pressure input pipeline is connected with an oil inlet of the first high-pressure plunger pair; the third section of high-pressure input pipeline is vertical to the second section of high-pressure input pipeline, and two ends of the third section of high-pressure input pipeline are respectively communicated with the second section of high-pressure input pipeline and the fourth section of high-pressure input pipeline; the fourth section of high-pressure input pipeline is parallel to the second section of high-pressure input pipeline, the first end of the fourth section of high-pressure input pipeline is fixed on the inner front wall of the casting in a sealing mode, and the second end of the fourth section of high-pressure input pipeline is connected with the oil inlet of the second high-pressure plunger pair.

And the high-pressure plunger pair is connected with the high-pressure output interface through a pipeline inside the high-pressure block.

The pump head part saves joints between pipes in the form of castings, omits the connection assembly process between pipes, is more convenient to assemble, realizes the direct communication between the pipelines inside the castings, is more reliable than the connection through the joints, enables the structure of the pump body module to be simpler and more compact, has better output stability, and further enables the ultrahigh pressure hydraulic pump to achieve the effects of compact structure, small integral volume and stable output.

Furthermore, the hydraulic pump upper structure is optimized, the valve group module and the electric cabinet are respectively arranged on two sides of the air cooler and the servo motor, the handle frame is designed into a frame structure, the valve group module, the servo motor, the electric cabinet and the air cooler are covered in the handle frame of the frame structure, so that the handle frame does not additionally occupy more space on the premise of normally playing the handle function, simultaneously earns the functions of protecting the valve group module, the air cooler, the servo motor and the electric cabinet, and the frame structure does not influence the overhaul and replacement of the protected module.

Still further, provide a neotype superhigh pressure plunger pair, as the high-pressure plunger pair of pump body module, this superhigh pressure plunger pair is small and exquisite light promptly again output pressure stable, and be difficult to damage, further reduces the volume of pump body module again simultaneously.

Specifically, novel super high pressure plunger pair include the plunger and the plunger body, internal plunger chamber, pressure boost chamber, low-pressure inlet channel, the high-pressure liquid outlet channel of being provided with of plunger, the plunger assembly is in the plunger intracavity, the plunger chamber sets up on the axis of the plunger body, and the terminal through-hole intercommunication that is less than the plunger chamber through an aperture ratio plunger chamber in plunger chamber and pressure boost chamber, the vertical setting in pressure boost chamber is located the terminal just right position with plunger chamber, and low pressure non return steel ball is established to pressure boost chamber bottom, establishes the low pressure non return pressure spring in the pressure boost intracavity. The top of the pressurizing cavity is provided with an olive head, and the lower end of the olive head is hermetically connected with the upper end of the pressurizing cavity. The olive head is internally provided with a high-pressure liquid outlet channel, the lower end of the high-pressure liquid outlet channel is connected with the pressurizing cavity, the upper end of the high-pressure liquid outlet channel is connected with the high-pressure outlet joint, the middle of the high-pressure liquid outlet channel is provided with a high-pressure non-return steel ball, an ejector rod is arranged above the high-pressure non-return steel ball and is in sliding fit with the inner wall of the high-pressure liquid outlet channel, a hole is formed between the ejector rod and the high-pressure non-return steel ball, the ejector rod is of a hollow tube structure and is sleeved with a high-pressure non-return pressure spring, and a hole is formed in the ejector rod. This novel plunger pair has increased the compressive capacity of the vice high-pressure side parts of plunger through olive head and the setting of cavity ejector pin in it to greatly reduced the backward flow volume of high-pressure fluid, when having improved the life-span of the vice reliability of plunger, also guaranteed output pressure's stability, provide the condition to the output that realizes the superhigh pressure.

The low-pressure liquid inlet channel is composed of five sections, the low-pressure liquid inlet is located above the plunger cavity, the first section of the low-pressure liquid inlet channel is located above the plunger cavity, the first end of the low-pressure liquid inlet channel is connected with the low-pressure liquid inlet, the second end of the low-pressure liquid inlet channel extends to one side of the plunger cavity towards the side face, the second section of the low-pressure liquid inlet channel is located at the side of the plunger cavity, the upper end of the low-pressure liquid inlet channel is connected with the first section, the lower end of the low-pressure liquid inlet channel is connected with the first end of the third section, the third section of the low-pressure liquid inlet channel is located below the plunger cavity, the second end of the third section of the low-pressure liquid inlet channel extends to the position right below the plunger cavity towards the middle, the fourth section of the low-pressure liquid inlet channel is located below the plunger cavity, the first end of the fourth section of the low-pressure liquid inlet channel is connected with the first end of the third section, the lower end of the third section of the low-pressure liquid inlet channel extends to the middle of the plunger cavity towards the middle. The lower end of the fifth section is connected with the second end of the fourth section, and the upper end of the fifth section is connected with the bottom of the pressurizing cavity. This novel plunger pair has reduced the atress of the vice low pressure side part of plunger through the setting of five section formula low pressure inlet channel, has reduced the backward flow volume of low pressure fluid, when improving the life-span of low pressure side part, has further guaranteed output pressure's stability, further does benefit to the output that realizes the superhigh pressure.

This novel super high pressure plunger pair has reduced the vice shared volume of plunger when satisfying the functional requirement, has reduced holistic quality simultaneously.

The handle frame mainly comprises two trapezoidal main frames which are symmetrically arranged, the two main frames are connected through a cross beam, and the touch screen is arranged between oblique edges of the two main frames. The servo motor driver is arranged on the top cross beam of the handle frame. This novel handle frame can realize the function of handle frame as the transport atress body when installation servo motor driver and touch-sensitive screen, makes the transportation of the whole pump body portable.

The invention has the beneficial effects that:

1. the output pressure of the hydraulic pump is regulated and controlled in a mode of regulating and controlling the rotating speed of the servo motor in real time through the electric control unit according to the output pressure of the hydraulic system. The stability of ultrahigh pressure output is greatly improved, the working environment of hydraulic elements in the ultrahigh pressure output is improved, and the service life of the hydraulic elements is greatly prolonged.

2. The intelligent ultrahigh-pressure hydraulic pump is provided with the local communication unit and the remote server, the working data of the intelligent ultrahigh-pressure hydraulic pump is transmitted to the remote server in real time, the working condition of the pump station can be known in real time through the cloud platform, relevant important information is stored in the remote server, and an actual and feasible solution is provided for subsequent historical inquiry.

3. The components of the ultrahigh pressure hydraulic pump are systematically optimized. The whole structure of the hydraulic pump is simpler and more compact, and the volume is smaller and lighter.

4. The novel ultrahigh-pressure plunger pair is small, exquisite, portable, stable in output pressure and not easy to damage, and the size of the pump body module is further reduced.

Drawings

FIG. 1 is a schematic diagram of the overall explosion of an intelligent ultrahigh pressure hydraulic pump;

FIG. 2 is an exploded view of the tank module;

FIG. 3 is a front view of an intelligent ultra high pressure hydraulic pump;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is a front view of the pump block module;

FIG. 6 is a schematic view of the pump body disk and the slot block;

FIG. 7 is a schematic view of the arrangement of the plunger pairs at the bottom of the pump body module;

FIG. 8 is a schematic view of the pump head components and part of the piping;

FIG. 9 is a schematic view of the upper portion of the screen membrane taken along line H-H in FIG. 5;

FIG. 10 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 11 is a schematic view of the internal structure of the low pressure unloader valve;

FIG. 12 is a cross-sectional view taken along line D-D of FIG. 5;

FIG. 13 is a partial cross-sectional view taken along line I-I of FIG. 5;

FIG. 14 is a front view of the high pressure plunger pair;

FIG. 15 is a left side view of the high pressure plunger pair;

FIG. 16 is a cross-sectional view taken along line F-F of FIG. 15;

FIG. 17 is a cross-sectional view taken along line E-E of FIG. 14;

FIG. 18 is a schematic view of the pump block module being in fluid connection with the valve block module;

FIG. 19 is a front view of the valve block module;

fig. 20 is a left side view of the valve block module;

FIG. 21 is a cross-sectional view taken along line K-K of FIG. 20;

FIG. 22 is a sectional view taken along line L-L of FIG. 20;

FIG. 23 is a cross-sectional view taken along line C-C of FIG. 20;

FIG. 24 is a cross-sectional view taken along line M-M of FIG. 19;

FIG. 25 is a hydraulic schematic;

fig. 26 is a schematic diagram of the working principle of the intelligent ultrahigh-pressure hydraulic pump.

Detailed Description

The technical principle and the structural composition of the intelligent ultrahigh pressure hydraulic pump are further explained in the following by combining the attached drawings.

As shown in fig. 1-4, the intelligent ultrahigh pressure hydraulic pump of the invention comprises an oil tank module 1, a servo motor 3, an air cooler 8, a bracket module 100, a pump body module 2, a valve bank module 9 and an electric cabinet 4.

The oil tank module 1 is a main support body of the intelligent ultrahigh-pressure hydraulic pump. The oil tank module 1 is composed of an oil tank cover plate 20, an oil tank 17, an oil level indicator 21, an oil level indicator fixing head 24, an oil drain plug 25 and the like. The oil tank 17 is of a groove type structure, the upper edge of the oil tank 17 is provided with an outward turned flange edge 17a, the oil tank cover plate 20 is of a flat plate type structure, and the edge profile of the oil tank cover plate 20 is fixedly connected with the upper edge of the oil tank 17 through the outward turned flange edge 17a through a flange bolt 18. The oil pointer 21 is embedded in a concave vertical groove formed in the outer wall of the oil tank 17, an oil drainage plug 25 and an oil pointer fixing head 24 are arranged at the bottom end of the oil tank wall on the same surface where the oil pointer is located, the oil drainage plug 25 can play a role in removing oil in the oil tank, the oil pointer fixing head 24 is connected with the bottom end of the oil pointer, and the oil directly enters the oil pointer through a small hole in the rear end of the oil pointer fixing head 24 to achieve the purpose of observing the oil amount. The intelligent ultrahigh-pressure hydraulic pump adopts the embedded oil pointer, so that the possibility of external collision can be effectively avoided, and the service life of the oil pointer is prolonged.

The servo motor 3 is fixed on the middle front position above the oil tank cover plate 20 and is fixedly connected with the oil tank cover plate 20 and the pump body module 2 through bolts.

The air cooler 8 directly pass the corresponding hole site on the oil tank apron 20 by the screw thread post that self was brought, from bottom to top installation locking gasket and nut, with its and oil tank apron 20 vertical fixation together, 8 lower extremes of air cooler are equipped with fluid pipeline entry and an air cooler oil return opening 8b, the air cooler can play the effect of giving off the high temperature in the hydraulic oil to the air, the air cooler is equipped with the fan, can pass through the air flow and strengthen the cooling effect to reduce the oil temperature environment of whole pump station.

The support module 100 is composed of a handle frame 5, a servo motor driver 6 and a touch screen 7. The handle frame 5 is composed of two trapezoidal main frames which are symmetrically arranged, and the two main frames are connected by a cross beam; two handle frame support plates 5a folded inwards are arranged at the lower edges of the left side and the right side of the handle frame 5, and the handle frame support plates 5a are fixedly connected with the oil tank cover plate 20; the touch screen 7 is arranged between the bevel edges of the front sides of the two main frames, and the servo motor driver 6 is arranged at the top of the support module 100; the handle frame 5 is installed with the servo motor driver 6 and the touch screen 7, and simultaneously, the function of carrying a stress body is realized, so that the whole pump body is convenient to transport and carry.

As shown in fig. 5-9, the pump body module is composed of a pump body flange 10, a pump body sleeve 16, a pump head component 12, a pump body disc 67, a high-pressure plunger pair, a low-pressure plunger pair, a filter screen film 11 and the like.

A first cylindrical hole is formed in the middle of the pump body disc 67, a first bearing 72a is installed in the first cylindrical hole, the outer ring of the first bearing 72a is matched with the first cylindrical hole, the inner ring of the first bearing 72a is matched with a rotating shaft 101, and the rotating shaft 101 is fixedly connected with an output shaft of the servo motor; an annular column base 71 is arranged above the first cylindrical hole, the inner diameter d1 of the annular column base 71 is smaller than the diameter d of the first cylindrical hole, and the outer diameter d2 of the annular column base 71 is larger than the diameter d of the first cylindrical hole.

A first high-pressure plunger pair 441, a second high-pressure plunger pair 442, a first low-pressure plunger pair 461, a second low-pressure plunger pair 462, a third low-pressure plunger pair 463 and a fourth low-pressure plunger pair 464 are fixed at the bottom of the pump body disc 67, the six plunger pairs are distributed on a circumference with the center of the central cam 45 as the center of a circle, and the central cam 45 is fixedly connected with the rotating shaft 101. The six plunger pairs and the central cam 45 are covered by the filter screen film 11, and the filter screen film 11 is fixed on the pump body disc 67 through the fixing bolts 65 and the clamping groove block 66.

The pump head unit 12 is composed of a casting 121, a first high pressure block 122, and a second high pressure block 123.

The first high-pressure block 122 and the second high-pressure block 123 are communicated through a first ultrahigh-pressure pipe 431.

A second cylindrical hole is formed in the middle of the casting 121, the diameter of the second cylindrical hole is d3, a cylindrical groove 12a is formed below the second cylindrical hole, the cylindrical groove 12a is matched with the annular column base 71 of the pump body disc 67, and the pump head component 12 is fixedly connected with the pump body disc 67 through bolts; the pump body sleeve 16 is arranged between the pump head component 12 and the pump body flange 10, and the pump head component 12 and the pump body flange 10 are fixedly connected through bolts; and a second bearing 72b is arranged in the pump body flange 10, and the inner ring of the second bearing 72b is matched with the rotating shaft 101.

As shown in fig. 10 to 13, the casting 121 is internally provided with a low pressure unloading valve 30, a first pressure regulating valve 142, a low pressure pipeline and a high pressure input pipeline.

The low-pressure unloading valve 30 is a 7MPa unloading valve, the low-pressure unloading valve 30 is provided with 4 oil ports connected with the outside, and a fourth oil port A4 is connected with a second low-pressure plunger pair oil outlet 602; in the low-pressure unloading valve 30, a fifth check valve is arranged between the fourth oil port A4 and the third oil port A3, a sixth check valve is arranged between the third oil port A3 and the second oil port A2, a 7MPa overflow valve is arranged between the fourth oil port A4 and the first oil port A1, and the control end of the overflow valve is communicated with the third oil port A3.

The first pressure regulating valve 142 is a 12MPa pressure regulating valve and is provided at the connection between the low pressure line and the high pressure input line.

The low-pressure pipeline consists of ten sections of pipelines. A first section of pipeline L is parallel to the front and rear horizontal edges of the casting 121, the first end of the first section of pipeline L is connected with the pump body module oil return port 402, and the second end of the first section of pipeline L is connected with a first oil liquid port A1 of the low-pressure unloading valve 30; the second section of pipeline M is parallel to the first section of pipeline L, the first end of the second section of pipeline M is connected with a second oil liquid port A2 of the low-pressure unloading valve 30, the second end of the second section of pipeline M is connected with a third section of pipeline N, and meanwhile, the second section of pipeline M is communicated with an oil liquid outlet 603 of the third low-pressure plunger pair; the third section of pipeline N is perpendicular to the second section of pipeline M, the first end of the third section of pipeline is fixed at the inner edge of the casting 121 in a sealing mode through a hexagon socket head cap screw, and the second end of the third section of pipeline is connected with the fourth section of pipeline P; the first end of the fourth section of pipeline P is fixed at the inner edge of the casting 121 in a sealing and inclining way through a hexagon socket head cap screw, and the second end of the fourth section of pipeline P is connected with the first end of the fifth section of pipeline W; the second end of the fifth section of pipeline W is connected with the inlet of a first check valve 151, in this example, the first check valve 151 is in a blocking state, and the middle of the fifth section of pipeline W is connected with the first end of a sixth section of pipeline R; the sixth section of pipeline R is parallel to the first section of pipeline L, the second end of the sixth section of pipeline R is fixed at the inner edge of the casting 121 by a socket head cap screw in a sealing manner, and the middle of the sixth section of pipeline R is communicated with the fourth low-pressure plunger pair oil outlet 604; the seventh section of pipeline T is perpendicular to the sixth section of pipeline R, the first end of the seventh section of pipeline T is connected with the sixth section of pipeline R, and the second end of the seventh section of pipeline T is connected with the electromagnetic valve pipeline connector 13; the eighth pipeline section Q is obliquely arranged, the first end of the eighth pipeline section Q is connected with an outlet of the first one-way valve 151, and the second end of the eighth pipeline section Q is hermetically fixed at the inner edge of the casting 121 through an inner hexagon screw; a first end of a ninth pipeline O is connected with a third oil port of the low-pressure unloading valve 30 and is communicated with an eighth pipeline Q, and a second end of the ninth pipeline O is connected with an oil inlet of the first pressure regulating valve 142; the center line of the tenth section of pipeline S is superposed with the center line of the sixth section of pipeline R and is vertically intersected with the ninth section of pipeline O, the first end of the tenth section of pipeline S is connected with the oil outlet 601 of the first low-pressure plunger pair, and the second end of the tenth section of pipeline S is connected with the low-pressure output interface 372.

The high-pressure input pipeline consists of four sections of pipelines. The first section of high-pressure input pipeline G is arranged at a position which is slightly to the right in front of the circular column base 71 and is parallel to the front horizontal edge and the rear horizontal edge of the casting 121, the first end of the first section of high-pressure input pipeline G is connected with the outlet of a first pressure regulating valve 142, the outlet of the first pressure regulating valve 142 is positioned right below the first pressure regulating valve, and the second end of the first section of high-pressure input pipeline G is connected with the first end of the second section of high-pressure input pipeline X; the second section of high-pressure input pipeline X is positioned at the front position of the right side of the circular column table 71, the second section of high-pressure input pipeline X is vertical to the first section of high-pressure input pipeline G, and the second end of the second section of high-pressure input pipeline X is connected with an oil inlet 613 of the first high-pressure plunger pair; a third section of high-pressure input pipeline Y is arranged between the circular ring column base 71 and the first section of high-pressure input pipeline G, is vertical to the second section of high-pressure input pipeline X, and is communicated with the second section of high-pressure input pipeline X and the fourth section of high-pressure input pipeline Z at two ends respectively; the fourth section of high-pressure input pipeline Z is located on the left side of the circular ring column base 71 and is located at the front position and parallel to the second section of high-pressure input pipeline X, the first end of the fourth section of high-pressure input pipeline Z is fixed at the front edge of the casting 121 in a sealing mode, and the second end of the fourth section of high-pressure input pipeline Z is connected with an oil liquid inlet 614 of the second high-pressure plunger pair.

Oil enters the low-pressure plunger pair from the side wall of the 4 low-pressure plunger pairs, then flows through the 4 low-pressure plunger pair oil outlets to enter the casting 121, and then enters the low-pressure pipeline.

When the oil pressure in the low-pressure pipeline is greater than 7Mpa, the overflow valve in the low-pressure unloading valve 30 is opened, and part of the oil flows through the first section pipeline L and flows out from the pump body module oil return port 402;

when the oil pressure in the low-pressure pipeline is greater than 12Mpa, part of oil flows into the first section of high-pressure input pipeline G from an outlet below the first pressure regulating valve 142, and the oil pressures of the oil at the ninth section of pipeline O, the tenth section of pipeline S and the low-pressure output interface 372 are stable and 12 Mpa;

the solenoid valve pipeline interface 13 is connected with the valve group module 9, a third pressure regulating valve 143 is arranged in the valve group module 9, when the oil pressure in the low-pressure pipeline is larger than 13Mpa, the oil pressure is regulated by the third pressure regulating valve 143 in the valve group module, and the oil pressures of the second section of pipeline M, the third section of pipeline N, the fourth section of pipeline P, the sixth section of pipeline R, the seventh section of pipeline T and the solenoid valve pipeline interface 13 are all stable 13 Mpa.

Oil in the high-pressure input pipeline enters the first high-pressure plunger pair 441 and the second high-pressure plunger pair 442 from the oil inlet 613 and the oil inlet 614 of the first high-pressure plunger pair respectively.

As shown in fig. 14-17, the high-pressure plunger sub-plunger 50 is arranged on the central axis of the plunger body, the plunger cavity a is in contact with the plunger head, the tail end of the plunger cavity a is communicated with the pressurizing cavity B through a through hole with a smaller aperture than that of the plunger cavity a, the pressurizing cavity B is vertically arranged and is located at a position right opposite to the tail end of the plunger cavity a, the bottom of the pressurizing cavity B is provided with a low-pressure check steel ball 551, and the pressurizing cavity B is internally provided with a low-pressure check pressure spring 561. The bottom of the pressurizing cavity B is connected with the low-pressure liquid inlet channel, the top of the pressurizing cavity B is provided with an olive head 57, and the lower end of the olive head 57 is hermetically connected with the upper end of the pressurizing cavity B. A high-pressure liquid outlet channel D is arranged in the olive head 57, the lower end of the high-pressure liquid outlet channel D is connected with the pressurizing cavity B, the upper end of the high-pressure liquid outlet channel D is connected with an oil outlet of the high-pressure plunger pair, a high-pressure check steel ball 552 is arranged in the middle of the high-pressure liquid outlet channel D, a push rod 58 is arranged above the high-pressure check steel ball 552, the push rod 58 is in sliding fit with the inner wall of the high-pressure liquid outlet channel D, a hole is formed between the high-pressure check steel ball 552 and the high-pressure liquid outlet channel D, a high-pressure check pressure spring 562 is sleeved on the push rod 58, the push rod 58 is of a hollow tube structure, and a horizontal through hole is formed in the push rod.

In a period of the rotation of the central cam, the rotation of the central cam generates pressure on the plunger 50, when the pressure is greater than the elastic force of the spring 51 on the plunger 50, the plunger is pressed into the plunger cavity by the resultant force F1 generated by the central cam 45 and the spring 50 on the plunger, at the moment, the oil in the plunger cavity A is pressed into the pressurizing cavity B by the plunger 50, the low-pressure check steel ball 551 is extruded to the lower end of the pressurizing cavity B, and the oil in the pressurizing cavity B extrudes the high-pressure check steel ball 552 to flow out from the high-pressure liquid outlet channel D; when the pressure generated by the rotation of the central cam 45 to the plunger is smaller than the elastic force of the spring 51 to the plunger 50, the plunger 50 is pushed back to the original position by the resultant force F2 generated by the central cam 45 and the spring 50, at this time, the high-pressure check steel ball 552 is extruded to the lower end of the high-pressure liquid outlet channel D, the low-pressure check steel ball 551 is extruded, and the oil in the low-pressure liquid inlet channel enters the pressurizing cavity B.

The low-pressure liquid inlet channel consists of five sections. The liquid inlet C of the high-pressure plunger pair is positioned above the plunger cavity A, the first section E is positioned above the plunger cavity A, the first end of the first section E is connected with the liquid inlet C of the high-pressure plunger pair, and the second end of the first section E extends to the side and is connected with one end of a second section H; the third section J is positioned below the plunger cavity A, and the second end of the third section J extends towards the middle to be positioned right below the plunger cavity A; the fourth section I is positioned below the plunger cavity A, the first end of the fourth section I is connected with the second end of the third section J, and the second end extends to the position right below the pressurizing cavity B; the lower end of the fifth section K is connected with the second end of the fourth section I, and the upper end of the fifth section K is connected with the bottom of the pressurizing cavity B. This novel plunger is vice through the setting of five section formula low pressure inlet channel, has reduced the atress of plunger side parts, when improving plunger side parts life-span, has further guaranteed output pressure's stability, further does benefit to the stable output that realizes the superhigh pressure.

Oil in the high-pressure liquid outlet channel is output from the high-pressure plunger pair to enter the first high-pressure block 122 and the second high-pressure block 123, and then enters the valve block module 9 through the second ultrahigh-pressure pipeline 432.

The pump body module provided by the invention has the advantages of compact structure and stable output pressure, and can realize ultrahigh pressure output, thereby further reducing the volume of an ultrahigh pressure hydraulic pump.

Referring to fig. 18, the valve block module 9 is fixed to the fuel tank cover plate 20 on the left side of the servo motor 3, and the valve block module 9 and the pump body module 2 are respectively disposed on the upper and lower sides of the fuel tank cover plate 20, and are separated by only one plate. The electromagnetic valve pipeline interface 13 is connected with the electric control oil inlet 38 of the valve group module through an electromagnetic valve control pipeline 42; the low pressure output interface 372 is connected with the low pressure oil inlet 371 of the valve block module through a low pressure pipeline 41. Oil in the high-pressure liquid outlet channel is output from the high-pressure plunger pair to enter the first high-pressure block 122 and the second high-pressure block 123, and then enters the valve block module through the second ultrahigh-pressure pipeline 432.

Referring to the hydraulic principle shown in fig. 25, as shown in fig. 19 to 24, the valve block module is composed of a super high pressure sensor 35, a second pressure regulating valve 141, a third pressure regulating valve 143, a pilot operated shutoff valve 27, an electromagnetic valve 26, and the like. In fig. 25, LP and XP denote plunger pairs corresponding to low-pressure lines, YP denotes plunger pairs corresponding to pilot-operated lines, and HP denotes plunger pairs corresponding to high-pressure lines.

The pipeline through which oil enters the valve block module from the ultrahigh oil inlet 36 is an ultrahigh oil pipeline 110; the oil entering the valve block module from the low-pressure oil inlet 371 enters the ultra-high-pressure oil pipeline 110 after flowing through the second check valve 152; the oil pressure of the oil in the ultrahigh pressure pipeline 110 can be regulated by a second pressure regulating valve 141, the regulation range is 0-200 Mpa, and the second pressure regulating valve 141 is connected with an oil return port 401 of the valve block module; the ultrahigh pressure sensor 35 can detect the oil pressure of the ultrahigh pressure pipeline 110; the oil in the ultrahigh pressure pipeline 110 flows through the third check valve 153 and enters the hydraulic control pipeline; the oil in the hydraulic control pipeline is controlled by the electromagnetic valve 26, the oil entering the valve group module from the electric control oil inlet 38 enters the electric control oil pipeline 112, the oil pressure of the oil in the electric control oil pipeline 112 is regulated and controlled by the third pressure regulating valve 143, the regulated oil pressure is stable 13MPa, the oil at the moment flows through the fourth check valve 154, the oil is divided into two pipelines, the first pipeline leads to the hydraulic control stop valve 27, and the second pipeline is controlled to be switched on and off by the electromagnetic valve 26. When the electromagnetic valve 26 is disconnected, that is, the electromagnetic valve does not play a role, the hydraulic control stop valve 27 plays a role in blocking a pressure relief pipeline in the ultrahigh pressure pipeline, so that the ultrahigh pressure pipeline oil is detected by the pressure sensor and then is output outwards through a valve block module output interface 29 (serving as an interface for the hydraulic pump to output the oil outwards); when the electromagnetic valve 26 is communicated, the hydraulic control stop valve 27 does not work, the oil liquid released by the ultrahigh pressure pipeline flows out from the oil return port 401 of the valve group module, and at the moment, the oil liquid in the ultrahigh pressure pipeline does not work outwards.

The valve group module is a main body facing a user, and can realize the functions of ultrahigh pressure output, pressure regulation, output pressure signal acquisition and electromagnetic valve oil circuit switching.

The electric cabinet 4 is fixed on the oil tank cover plate on the right side of the servo motor 3, and the bottom of the L-shaped connecting plate 63 of the electric cabinet 4 is fixed with the oil tank cover plate 20 through screws.

Referring to fig. 26, an electric control unit, an overcurrent protection unit and other components are arranged in the electric cabinet 4, and the operating handle is directly connected with the electric cabinet; the overcurrent protection module plays a role in protecting a power supply and a circuit; the electric control unit is a main body for realizing an intelligent control system, the electric control unit performs start-stop control by reading the button state of the handle, controls the electromagnetic valve to realize oil circuit switching control, reads data acquired by the sensor and controls the rotating speed of the servo motor to realize constant output control; the electric control unit is connected with the touch screen 7 to realize parameter input and data and curve display; the electric control unit measures input voltage to realize overvoltage and undervoltage protection, measures the temperature of the motor and the oil cylinder, controls the active heat dissipation unit to work and realizes high-temperature protection; the electronic control unit is also connected with the USB flash disk to save work records, is connected with the wireless module and uploads the data to the remote server, so that the unified monitoring and management of the user on the data are facilitated.