阅读说明：本技术 一种用于地下铲运机拖车系统的液压弹簧缸 (Hydraulic spring cylinder for trailer system of underground scraper ) 是由 刘志刚 冯会会 于 2021-03-11 设计创作，主要内容包括：本发明公开了一种用于地下铲运机拖车系统的液压弹簧缸,涉及液压设备技术领域。本发明包括缸体、两个挡板和伸缩轴,缸体两端与挡板固定连接,伸缩轴与缸体一端的挡板滑动连接,伸缩轴延伸至缸体内部。本发明通过使用卸压杆和冷却腔,该结构摒弃了液压阀,简化了结构,采用多级卸压的方式,有利于保护设备；本发明通过使用换热管,给缸体内的油降温,避免过热；本发明通过使用距离传感器,当增压腔内的油压增大到一定程度后卸压杆可以往右侧移动卸压,然后距离传感器可以感应到卸压杆的位置,及时发出信号,提醒使用者卸压腔内的油压达到阀值,停止增压。(The invention discloses a hydraulic spring cylinder for an underground scraper trailer system, and relates to the technical field of hydraulic equipment. The invention comprises a cylinder body, two baffles and a telescopic shaft, wherein two ends of the cylinder body are fixedly connected with the baffles, the telescopic shaft is in sliding connection with the baffles at one end of the cylinder body, and the telescopic shaft extends into the cylinder body. According to the invention, the pressure relief rod and the cooling cavity are used, the hydraulic valve is abandoned, the structure is simplified, and a multi-stage pressure relief mode is adopted, so that the equipment is protected; the heat exchange tube is used for cooling the oil in the cylinder body, so that overheating is avoided; according to the invention, by using the distance sensor, the pressure relief rod can move to the right side to relieve pressure after the oil pressure in the pressurization cavity is increased to a certain degree, and then the distance sensor can sense the position of the pressure relief rod and send out a signal in time to remind a user that the oil pressure in the pressure relief cavity reaches a threshold value, so that pressurization is stopped.)

1. The utility model provides a hydraulic spring cylinder for secret scraper trailer system, includes cylinder body (1), two baffle (108) and telescopic shaft (2), cylinder body (1) both ends and baffle (108) fixed connection, telescopic shaft (2) and baffle (108) sliding connection of cylinder body (1) one end, its characterized in that:

the telescopic shaft (2) extends to the inside of the cylinder body (1), the cylinder body (1) is internally provided with a piston (5) in a sliding fit manner, the inner wall of the cylinder body (1) is fixedly connected with a fixed block (7), the piston (5) and the left side of the cylinder body (1) form a pressurizing cavity (103), a pressure relief cavity (104) is formed among the piston (5), the cylinder body (1) and the fixed block (7), the fixed block (7) and the right side of the cylinder body (1) form a sensing cavity (105), the telescopic shaft (2) is positioned in the pressurizing cavity (103), one end of the telescopic shaft (2) is fixedly connected with the piston (5), a plurality of guide rods (4) are fixedly connected between the inner walls of the fixed block (7) and the cylinder body (1), the guide rods (4) are in sliding fit with the piston (5), a first spring (6) is arranged on the side of each guide rod (4), and the first spring (6) is positioned between the piston (5) and the fixed, the pressurization cavity (103) is communicated with an oil inlet pipe (101), and the pressure relief cavity (104) is communicated with an oil outlet pipe (102);

a sliding groove (701) is formed in one surface of the fixed block (7), a pressure relief rod (11) is in sliding fit with the sliding groove (701), a second spring (12) is fixedly connected to the bottom surfaces of the pressure relief rod (11) and the sliding groove (701), the tail end of the pressure relief rod (11) extends into the induction cavity (105), and a distance sensor (8) is installed in the induction cavity (105);

a cooling cavity (106) is formed in the wall of the cylinder body (1), an oil passage channel (702) is formed between the cooling cavity (106) and the sliding groove (701), the cooling cavity (106) is communicated with the pressure relief cavity (104), a check valve (9) is installed at the communication position of the cooling cavity (106) and the pressure relief cavity (104), and a heat exchange pipe (107) is further installed in the cooling cavity (106).

2. A hydraulic spring cylinder for an underground scraper trailer system according to claim 1, characterised in that an adapter (3) is fixedly connected to one end of the telescopic shaft (2).

3. A hydraulic spring cylinder for an underground scraper trailer system according to claim 1, characterised in that a first sealing ring (10) is arranged between the telescopic shaft (2) and the barrier (108).

4. A hydraulic spring cylinder for an underground scraper trailer system according to claim 1, characterized in that the longitudinal section of the pressure-release bar (11) is "T" -shaped.

5. A hydraulic spring cylinder for an underground scraper trailer system according to claim 1, characterised in that a second sealing ring (13) is arranged between the pressure-release bar (11) and the fixed block (7).

6. A hydraulic spring cylinder for an underground scraper trailer system according to claim 1, characterized in that the heat exchange tube (107) communicates at both ends with the outside.

7. A hydraulic spring cylinder for an underground scraper trailer system according to claim 1, characterised in that the maximum length of the pressure-relief bar (11) is smaller than the distance between the fixed block (7) and the distance sensor (8).

Technical Field

The invention belongs to the technical field of hydraulic equipment, and particularly relates to a hydraulic spring cylinder for an underground scraper trailer system.

Background

The mine enterprises refer to independent production and operation units for mining ores with certain mining capacity. The mine mainly comprises one or more mining workshops and auxiliary workshops, most mines also comprise a mine dressing field, equipment such as a scraper is often used for auxiliary construction in the mining of the mine, and the scraper equipment comprises a large number of hydraulic spring cylinders.

However, the existing hydraulic cylinder is generally provided with a hydraulic valve for pressure relief, but the internal parts of the pressure relief valve are damaged in such a way that the pressure relief capacity of the pressure relief valve is reduced after a long time, and a pressure feedback mechanism is lacked.

Disclosure of Invention

The invention aims to provide a hydraulic spring cylinder for an underground scraper trailer system, which solves the problems that the conventional hydraulic cylinder is generally provided with a hydraulic valve for pressure relief, however, the internal parts of the pressure relief valve are damaged, the pressure relief capacity of the pressure relief valve is reduced after a long time, and a pressure feedback mechanism is lacked.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a hydraulic spring cylinder for an underground scraper trailer system, which comprises a cylinder body, two baffles and a telescopic shaft, wherein two ends of the cylinder body are fixedly connected with the baffles, the telescopic shaft is slidably connected with the baffles at one end of the cylinder body, the telescopic shaft extends into the cylinder body, a piston is slidably matched in the cylinder body, the inner wall of the cylinder body is also fixedly connected with a fixed block, the piston and the left side of the cylinder body form a pressurizing cavity, a pressure relief cavity is formed among the piston, the cylinder body and the fixed block, the fixed block and the right side of the cylinder body form an induction cavity, the telescopic shaft is positioned in the pressurizing cavity, one end of the telescopic shaft is fixedly connected with the piston, a plurality of guide rods are fixedly connected between the fixed block and the inner wall of the cylinder body, the guide rods are slidably matched with the piston, a first spring is arranged on the peripheral side of each guide, the pressurizing cavity is communicated with an oil inlet pipe, and the pressure discharging cavity is communicated with an oil outlet pipe.

The spout has been seted up on fixed block one surface, spout sliding fit has the depression bar, depression bar and spout bottom surface fixedly connected with second spring, the depression bar end extends to the response intracavity, install distance sensor in the response intracavity.

The cooling cavity is arranged in the cylinder wall of the cylinder body, an oil passage is arranged between the cooling cavity and the sliding groove, the cooling cavity is communicated with the pressure relief cavity, a one-way valve is arranged at the communication position of the cooling cavity and the pressure relief cavity, and a heat exchange tube is arranged in the cooling cavity.

Preferably, one end of the telescopic shaft is fixedly connected with an adapter.

Preferably, a first sealing ring is arranged between the telescopic shaft and the baffle plate.

Preferably, the longitudinal section of the pressure relief rod is T-shaped.

Preferably, a second sealing ring is arranged between the pressure relief rod and the fixed block.

Preferably, both ends of the heat exchange tube are communicated with the outside.

Preferably, the maximum length of the pressure relief lever is smaller than the distance between the fixed block and the distance sensor.

The invention has the following beneficial effects:

1. according to the oil pressure release device, the pressure release rod and the cooling cavity are used, so that oil is fed from the oil inlet pipe when the oil pressure release device works, oil pressure is released from the oil outlet pipe at the beginning, pressure is applied to elements connected with the oil outlet pipe, then the pressure is released in order to avoid that the element at one end of the oil outlet pipe damages the pressure release rod to move right when the pressure is continuously increased, the pressure is continuously increased at last, the pressure release rod moves to the bottom of the sliding groove, part of oil enters the cooling cavity to be further released, and a common hydraulic valve is abandoned, the structure is simplified, a multi-stage pressure release mode is adopted;

2. by using the heat exchange tube, if the oil entering the cooling cavity is overheated, the water can be introduced into the heat exchange tube for heat exchange, so that the temperature can be reduced, and finally, when the piston moves leftwards, the oil in the cooling cavity can return to the pressure relief cavity to reduce the temperature of the oil in the cylinder body, so that the overheating is avoided;

3. according to the invention, by using the distance sensor, the pressure relief rod can move to the right side to relieve pressure after the oil pressure in the pressurization cavity is increased to a certain degree, and then the distance sensor can sense the position of the pressure relief rod and send out a signal in time to remind a user that the oil pressure in the pressure relief cavity reaches a threshold value, so that pressurization is stopped.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic three-dimensional view of a hydraulic spring cylinder for an underground scraper trailer system in accordance with the present invention;

FIG. 2 is an elevation view of a hydraulic spring cylinder for an underground scraper trailer system of the present invention;

FIG. 3 is a right side view of a hydraulic spring cylinder for an underground scraper trailer system of the present invention;

FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 3;

fig. 5 is an enlarged view of the area a in fig. 4.

In the drawings, the components represented by the respective reference numerals are listed below:

1-cylinder body, 101-oil inlet pipe, 102-oil outlet pipe, 103-pressure increasing cavity, 104-pressure releasing cavity, 105-induction cavity, 106-cooling cavity, 107-heat exchange pipe, 108-baffle, 2-telescopic shaft, 3-adapter, 4-guide rod, 5-piston, 6-first spring, 7-fixed block, 701-chute, 702-oil passage, 8-distance sensor, 9-one-way valve, 10-first sealing ring, 11-pressure releasing rod, 12-second spring and 13-second sealing ring.

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.

In the description of the present invention, it is to be understood that the terms "upper," "middle," "outer," "inner," "around," and the positional relationships are used merely for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Referring to fig. 1-5, the invention is a hydraulic spring cylinder for a trailer system of an underground carry-scraper, comprising a cylinder body 1, two baffles 108 and a telescopic shaft 2, wherein two ends of the cylinder body 1 are fixedly connected with the baffles 108, the telescopic shaft 2 is slidably connected with the baffles 108 at one end of the cylinder body 1, the telescopic shaft 2 extends into the cylinder body 1, a piston 5 is slidably fitted in the cylinder body 1, a fixed block 7 is fixedly connected with the inner wall of the cylinder body 1, a pressure increasing cavity 103 is formed by the piston 5 and the left side of the cylinder body 1, a pressure releasing cavity 104 is formed by the piston 5, the cylinder body 1 and the fixed block 7, a sensing cavity 105 is formed by the fixed block 7 and the right side of the cylinder body 1, the telescopic shaft 2 is positioned in the pressure increasing cavity 103, one end of the telescopic shaft 2 is fixedly connected with the piston 5, a plurality of guide rods 4 are fixedly connected between the fixed block 7 and the inner wall of the cylinder, the first spring 6 is positioned between the piston 5 and the fixed block 7, the pressurizing cavity 103 is communicated with an oil inlet pipe 101, and the pressure relief cavity 104 is communicated with an oil outlet pipe 102; in the structure, in the working process, the oil inlet pipe 101 is filled with oil, then the oil pressure pushes the piston 5 to move towards the right side, so that the telescopic shaft 2 is pushed to be more labor-saving, when the piston 5 moves towards the right, the oil in the pressure relief cavity 104 transmits pressure outwards through the oil outlet pipe 102, and the stress element can be connected to one side of the oil outlet pipe 102.

A sliding groove 701 is formed in one surface of the fixed block 7, a pressure relief rod 11 is slidably matched with the sliding groove 701, a second spring 12 is fixedly connected between the pressure relief rod 11 and the bottom surface of the sliding groove 701, the tail end of the pressure relief rod 11 extends into the sensing cavity 105, and a distance sensor 8 is mounted in the sensing cavity 105; when the oil pressure in the pressurizing cavity 103 is increased to a certain degree, the pressure relief rod 11 can move towards the right side to relieve pressure, and then the distance sensor 8 can sense the position of the pressure relief rod 11 and send out a signal in time to remind a user that the oil pressure in the pressure relief cavity 104 reaches a threshold value.

A cooling cavity 106 is formed in the cylinder wall of the cylinder body 1, an oil passage 702 is formed between the cooling cavity 106 and the sliding groove 701, the cooling cavity 106 is further communicated with the pressure relief cavity 104, a one-way valve 9 is arranged at the communication position of the cooling cavity 106 and the pressure relief cavity 104, and a heat exchange pipe 107 is further arranged in the cooling cavity 106; in the structure, if the oil pressure continues to increase, the pressure relief rod 11 moves to the bottom of the sliding groove 701, then the oil can enter the cooling cavity 106 through the oil passage 702 to play a role of secondary pressure relief, if the oil entering the cooling cavity 106 is overheated, water can be introduced into the heat exchange pipe 107 to exchange heat so as to cool, and finally when the piston 5 moves leftwards, the oil in the cooling cavity 106 can return to the pressure relief cavity 104.

Furthermore, one end of the telescopic shaft 2 is fixedly connected with the adapter 3, so that the telescopic shaft 2 is connected with other parts conveniently.

Further, the first seal ring 10 is provided between the telescopic shaft 2 and the baffle plate 108, so that the sealing property between the telescopic shaft 2 and the baffle plate 108 is improved.

Further, the longitudinal section of the pressure relief rod 11 is in a T shape, so that the pressure relief rod 11 is adapted to the size of the sliding groove 701.

Further, a second sealing ring 13 is arranged between the pressure relief rod 11 and the fixed block 7, so that the sealing performance between the pressure relief rod 11 and the fixed block 7 is improved.

Further, two ends of the heat exchange pipe 107 are communicated with the outside, so that water cooling or oil cooling is facilitated.

Further, the maximum length of the pressure relief lever 11 is smaller than the distance between the fixed block 7 and the distance sensor 8, so that the pressure relief lever 11 can be prevented from impacting the distance sensor 8.

Referring to fig. 1-5, the present invention is a hydraulic spring cylinder for an underground scraper trailer system, which uses a distance sensor 8 with a working voltage of 1.5V-3.6V, and operates according to the following principle:

firstly, the oil outlet pipe 102 can be connected with a stressed element, the oil outlet pipe 102 is used as a transmission channel of oil pressure, when the oil pump works, the oil inlet pipe 101 can pressurize and feed oil, so that the pressure in the pressurizing cavity 103 is increased, the piston 5 is pushed to move to the right, then the capacity of the pressure relief cavity 104 is reduced, oil is discharged from the oil outlet pipe 102, the stressed element on one side of the oil pipe 102 is extruded, then the pressure in the pressurizing cavity 103 is continuously increased, the pressure relief rod 11 is pushed to move to protect the stressed element, when the pressure relief rod 11 moves to the bottom of the chute 701, part of oil enters the cooling cavity 106 through the oil passage 702 and is relieved again, meanwhile, the distance sensor 8 senses the position of the pressure relief rod 11 and sends out an alarm to remind a worker that the pressure reaches a threshold value, meanwhile, a medium with lower temperature can be introduced into the heat exchange pipe 107 for heat exchange and temperature reduction, when the, part of the oil in the cooling chamber 106 can enter the pressure relief chamber 104, and has a certain temperature reduction effect.

It should be noted that oil is always present in the cooling chamber 106, and therefore oil in the cooling chamber 106 continues to enter the pressure relief chamber 104 as long as the above-described operation cycle is performed.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.