阅读说明：本技术 液压机超压报警装置 (Overpressure alarm device of hydraulic press ) 是由 冒海荣 于 2020-04-18 设计创作，主要内容包括：本发明属于液压机技术领域,尤其为液压机超压报警装置,包括机体,机体上设置有工作台,机体的上侧设置有电控箱,电控箱的下方且位于机体的下侧设置有支座,支座的上端设置有手动装置,手动装置的后方设置有伺服电机,机体的顶部设置有油缸,油缸的顶部和底部与手动装置的后端连通有输油管道,油缸的内侧活动设置有液压活塞杆。本发明通过将采集到的压力电信号输送到PLC控制器中进行压力计算和设定的压力上下限值比较,并通过计算压力的大小,当系统压力降至报警值时,无线接收器控制蜂鸣报警器发出报警声,这种自动控制的方式,能快速准确的进行对压力进行测定,安全性好,结构简单控制稳定,能够提高液压机的使用寿命。(The invention belongs to the technical field of hydraulic machines, and particularly relates to an overpressure alarm device of a hydraulic machine. According to the invention, the collected pressure electric signal is transmitted to the PLC to be compared with the set upper and lower pressure limit values, and the wireless receiver controls the buzzer alarm to give out an alarm sound when the system pressure is reduced to the alarm value by calculating the pressure.)

1. The overpressure alarm device of the hydraulic machine comprises a machine body (1) and is characterized in that: the hydraulic pressure monitoring device is characterized in that a workbench (2) is arranged on the machine body (1), an electric cabinet (3) is arranged on the upper side of the machine body (1), a support (4) is arranged below the electric cabinet (3) and on the lower side of the machine body (1), a manual device (5) is arranged at the upper end of the support (4), a servo motor (6) is arranged behind the manual device (5), an oil cylinder (8) is arranged at the top of the machine body (1), the top and the bottom of the oil cylinder (8) are communicated with the rear end of the manual device (5) through an oil pipeline (7), a hydraulic piston rod (9) is movably arranged on the inner side of the oil cylinder (8), a wireless pressure sensor (10) is arranged on the outer surface of the hydraulic piston rod (9), a PLC (11) is arranged on the front side of the top end of the machine body (1), and a buzzer alarm (13) is arranged on one side of the top of the machine body (1), the bottom fixedly connected with supporting seat (14) of organism (1), one side that the bottom of organism (1) is close to supporting seat (14) is provided with rolling element (17), the upper end of rolling element (17) is provided with cylinder (16), the inboard of cylinder (16) is run through and is provided with telescopic link (15).

2. Hydraulic machine overpressure warning device according to claim 1, characterized in that: the engine body (1) is of a C-shaped single-arm structure, and the engine body (1) is formed by welding a plurality of steel plates.

3. Hydraulic machine overpressure warning device according to claim 1, characterized in that: the front end outer surface of the electric cabinet (3) is provided with an indicator light and on-off keys, the number of the on-off keys is one group, and one side of the on-off keys is provided with a hydraulic gauge.

4. Hydraulic machine overpressure warning device according to claim 1, characterized in that: the front end outer surface fixed mounting of PLC controller (11) has display screen (12), and the below of display screen (12) is provided with the regulation and control key, and the regulation and control key is the rectangle array and arranges.

5. Hydraulic machine overpressure warning device according to claim 1, characterized in that: the inside of PLC controller (11) is provided with wireless receiver, wireless pressure sensor (10) are through the input electric connection of wireless receiver with PLC controller (11).

6. Hydraulic machine overpressure warning device according to claim 1, characterized in that: the bottom of the buzzer alarm (13) is in threaded connection with the top of the machine body (1), and the input end of the buzzer alarm (13) is electrically connected with the output end of the PLC (11).

7. Hydraulic machine overpressure warning device according to claim 1, characterized in that: the number of the supporting seats (14) is four, and the four groups of the supporting seats (14) are arranged at four corners of the bottom of the machine body (1) in a rectangular shape.

8. Hydraulic machine overpressure warning device according to claim 1, characterized in that: the bearing is embedded between the bottoms of the rolling body (17) and the cylinder (16), the rolling body (17) is movably connected with the cylinder (16) through the bearing, and the telescopic rod (15) is movably connected with the inside of the cylinder (16) through the piston sleeve.

Technical Field

The invention relates to the technical field of hydraulic presses, in particular to an overpressure alarm device of a hydraulic press.

Background

The hydraulic press is a machine for processing products such as metal, plastic, rubber, wood, powder and the like by using hydrostatic pressure. It is commonly used in pressing and press forming processes such as forging, stamping, cold extrusion, alignment, bending, flanging, sheet drawing, powder metallurgy, press fitting, and the like. The principle of the hydraulic transmission mechanism is that the hydraulic transmission mechanism is made by using the Pascal law, has a plurality of types, and has various purposes according to the requirements. For example, the pressure-transmitting fluid may be classified into two types, i.e., an oil press and a water press. An alarm device is needed when the common hydraulic machine is used to ensure the safety of the pressure of the hydraulic machine, but the traditional alarm device of the hydraulic machine has the following problems:

1. the structure is complex, the cost is high, the service life is short, and the maintenance is difficult;

2. when the hydraulic machine is maintained or installed, the hydraulic machine is very inconvenient to move, needs various hoisting devices and has low maneuverability.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an overpressure alarm device of a hydraulic machine, which solves the problems of complex structure, high manufacturing cost, short service life, difficult maintenance, inconvenient movement, various hoisting devices and poor maneuverability when the hydraulic machine is maintained or installed.

In order to achieve the purpose, the invention provides the following technical scheme: the overpressure alarm device of the hydraulic machine comprises a machine body, wherein a workbench is arranged on the machine body, an electric cabinet is arranged on the upper side of the machine body, a support is arranged below the electric cabinet and on the lower side of the machine body, a manual device is arranged at the upper end of the support, a servo motor is arranged behind the manual device, an oil cylinder is arranged at the top of the machine body, oil conveying pipelines are communicated with the top and the bottom of the oil cylinder and the rear end of the manual device, a hydraulic piston rod is movably arranged inside the oil cylinder, a wireless pressure sensor is arranged on the outer surface of the hydraulic piston rod, a PLC (programmable logic controller) controller is arranged on the front side of the top end of the machine body, a buzzer alarm is arranged on one side of the top of the machine body, the bottom of the machine body is fixedly connected with a support seat, a rolling body is arranged on one side of the bottom end of the machine body close to the support seat, and an air cylinder is arranged at the upper end of the rolling body, the inner side of the cylinder is provided with a telescopic rod in a penetrating mode.

As a preferred technical scheme of the invention, the machine body is of a C-shaped single-arm structure and is formed by welding a plurality of steel plates.

As a preferred technical scheme of the invention, the outer surface of the front end of the electric cabinet is provided with an indicator light and on-off keys, the number of the on-off keys is one group, and one side of each on-off key is provided with a hydraulic gauge.

As a preferred technical scheme of the invention, the outer surface of the front end of the PLC controller is fixedly provided with a display screen, and the lower part of the display screen is provided with adjusting keys which are arranged in a rectangular array.

As a preferred technical solution of the present invention, a wireless receiver is disposed inside the PLC controller, and the wireless pressure sensor is electrically connected to an input end of the PLC controller through the wireless receiver.

As a preferred technical scheme of the invention, the bottom of the buzzer alarm is in threaded connection with the top of the machine body, and the input end of the buzzer alarm is electrically connected with the output end of the PLC controller.

As a preferred technical scheme of the invention, the number of the supporting seats is four, and the four groups of supporting seats are arranged at four corners of the bottom of the machine body in a rectangular shape.

As a preferable technical scheme of the invention, a bearing is embedded between the rolling body and the bottom of the cylinder, the rolling body is movably connected with the cylinder through the bearing, and the telescopic rod is movably connected with the inside of the cylinder through a piston sleeve.

Compared with the prior art, the invention provides an overpressure alarm device of a hydraulic machine, which has the following beneficial effects:

1. the overpressure alarm device of the hydraulic machine is characterized in that a wireless receiver inside a PLC (programmable logic controller) is electrically connected with a wireless pressure sensor, a buzzer alarm is installed at the upper end of a machine body, the buzzer alarm is an electronic buzzer with an integrated structure, the wireless receiver controls the buzzer alarm to give out alarm sound when the pressure of the system is reduced to an alarm value by transmitting a collected pressure electric signal to the PLC for pressure calculation and comparison with a set upper limit value and a set lower limit value of the pressure and calculating the pressure, and a display screen is installed at the front end of the PLC and can display the pressure of each system to be measured in real time;

2. this hydraulic press superpressure alarm device through the cooperation of the telescopic link that sets up, cylinder, rolling element, when needs transport or maintenance hydraulic press, can make the hydraulic press remove and become convenient, has reduced maintenance and installation loss, has improved the mobility of hydraulic press, has indirectly improved workshop efficiency.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an overpressure alarm device of a hydraulic machine;

FIG. 2 is an enlarged view of the overpressure alarm device of the hydraulic machine in FIG. 1 at the point A;

FIG. 3 is an enlarged view of the position B in FIG. 1 of the overpressure alarm device of the hydraulic machine.

In the figure: 1. a body; 2. a work table; 3. an electric cabinet; 4. a support; 5. a manual device; 6. a servo motor; 7. an oil pipeline; 8. an oil cylinder; 9. a hydraulic piston rod; 10. a wireless pressure sensor; 11. a PLC controller; 12. a display screen; 13. a buzzer alarm; 14. a supporting seat; 15. a telescopic rod; 16. a cylinder; 17. and a rolling body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, in this embodiment: the overpressure alarm device of the hydraulic machine comprises a machine body 1, wherein the hydraulic machine is a YW41 hydraulic machine, a workbench 2 is arranged on the machine body 1, an electric cabinet 3 is arranged on the upper side of the machine body 1, a support 4 is arranged below the electric cabinet 3 and on the lower side of the machine body 1, a manual device 5 is arranged at the upper end of the support 4, a servo motor 6 is arranged behind the manual device 5, an oil cylinder 8 is arranged at the top of the machine body 1, an oil pipeline 7 is communicated between the top and the bottom of the oil cylinder 8 and the rear end of the manual device 5, a hydraulic piston rod 9 is movably arranged on the inner side of the oil cylinder 8, a wireless pressure sensor 10 is arranged on the outer surface of the hydraulic piston rod 9, a PLC 11 is arranged on the front side of the top end of the machine body 1, a buzzer alarm 13 is arranged on one side of the top of the machine body 1, a support 14 is fixedly connected to the bottom of the machine body 1, and a rolling body 17 is arranged on one side of the bottom end of the machine body 1, which is close to the support 14, the upper end of rolling element 17 is provided with cylinder 16, the inboard of cylinder 16 runs through and is provided with telescopic link 15, by inside wireless receiver and the wireless pressure sensor 10 electric connection of PLC controller 11, buzzing alarm 13 is installed to the upper end of organism 1, buzzing alarm 13 is the electronic message sounder of an integrated structure, through carrying the pressure calculation and the upper and lower limit value comparison of pressure of settlement in PLC controller 11 with the pressure signal of telecommunication of gathering, and through the size of calculation pressure, when system pressure drops to the alarm value, wireless receiver control buzzing alarm 13 sends the chimes of doom, can be fast accurate go on surveying pressure, and the warning of realizing fast in the case of the circumstances, the security is good, simple structure controls stably, can improve the life of hydraulic press.

In the embodiment, the machine body 1 is of a C-shaped single-arm structure, the machine body 1 is formed by welding a plurality of steel plates, the C-shaped single-arm structure is good in rigidity, simple in structure and convenient to operate, the whole machine is welded by the steel plates, and the machine is reliable in work, intuitive in action and convenient to maintain; an indicator light and on-off keys are arranged on the outer surface of the front end of the electric cabinet 3, the number of the on-off keys is one group, and a hydraulic gauge is arranged on one side of each on-off key, so that the hydraulic press can be controlled conveniently; the outer surface of the front end of the PLC 11 is fixedly provided with a display screen 12, and a regulating key is arranged below the display screen 12, the regulating keys are arranged in a rectangular array, and the arranged display screen 12 can display the pressure of each tested system in real time; a wireless receiver is arranged inside the PLC 11, the wireless pressure sensor 10 is electrically connected with the input end of the PLC 11 through the wireless receiver, the model of the wireless pressure sensor 10 and the wireless receiver is YDWX-31A, the model of the PLC 11 is CP1H series, the bottom of the buzzer alarm 13 is in threaded connection with the top of the machine body 1, the input end of the buzzer alarm 13 is electrically connected with the output end of the PLC 11, and the model of the buzzer alarm 13 is HND-3015A; the number of the supporting seats 14 is four, and the four groups of supporting seats 14 are arranged at four corners of the bottom of the machine body 1 in a rectangular shape; a bearing is embedded between the rolling body 17 and the bottom of the cylinder 16, the rolling body 17 is movably connected with the cylinder 16 through the bearing, and the telescopic rod 15 is movably connected with the inside of the cylinder 16 through a piston sleeve.

The working principle and the using process of the invention are as follows: when the hydraulic pressure measuring device works, the oil cylinder 8 outputs pressure to the hydraulic piston rod 9, the wireless pressure sensor 10 on the surface of the hydraulic piston rod 9 carries out pressure calculation and comparison with the set upper and lower pressure limit values by transmitting the collected pressure electric signals to the PLC 11, the pressure is calculated, if the system pressure is reduced to the alarm value, the wireless receiver controls the buzzer alarm 13 to give out alarm sound, if the system pressure measuring range is within the set threshold value, the buzzer alarm 13 does not give out alarm sound, the display screen 12 is installed at the front end of the PLC 11, and the display screen 12 can display the pressure of each measured system in real time.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.