Gear automatic selection type hydraulic manual auxiliary relieving device

Abstract

The gear automatic selection type hydraulic manual auxiliary release device comprises a manual pump structure, a reversing valve module and a clamp, the manual pump structure is connected with the clamp through the reversing valve module, the reversing valve module is connected with an auxiliary release unit, the manual pump structure can manually control switching of a release brake function and a brake function, and the auxiliary release unit is connected with the auxiliary release unit. The auxiliary release unit can assist the manual pump structure to switch between the release brake function and the brake function, and the reversing valve module can prompt the working states of the manual pump structure and the auxiliary release unit, so that the risk caused by misoperation and forgetting to restore the gear is avoided; the gear automatic selection type hydraulic manual auxiliary release device provided by the utility model is convenient to operate, can simply realize release brake, and can effectively prevent risks caused by misoperation and forgetting to restore gears.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail vehicles, and in particular relates to a gear automatic selection type hydraulic manual auxiliary relief device. Background Art

[0002] Braking relief generally refers to measures taken to reduce or optimize the braking process in transportation, mechanical equipment, or other related fields to improve safety, comfort, and braking efficiency. For most passive hydraulic brake systems, there are generally three or more relief methods to ensure that the vehicle can relieve braking in different situations. One is automatic relief, which is the relief method when driving and is controlled by the vehicle itself; one is manual relief, which is usually located on the vehicle and used when the vehicle loses power or has abnormal control; and the other is mechanical relief, which is generally used when the vehicle's oil and electricity have problems and the clamp is operated to relieve. After manually switching to manual relief mode, due to negligence of the operator, it is easy to forget to return to the original working position.

[0003] To solve the above problems, patent application document CN106515755A discloses a vehicle and its forced relief braking method and system, including: obtaining a traction instruction, activating a brake forced relief module; obtaining a forced relief instruction through the brake forced relief module; judging whether the vehicle speed has a positive speed corresponding to the traction instruction, and performing brake forced relief accordingly. The brake forced relief module that controls the execution of the forced relief braking action needs to be activated first, and the activation method is a traction instruction, that is, the forced relief instruction can only be activated when the vehicle has a tendency to travel under traction, so that the forced relief operation will not cause the vehicle to slip due to brake relief when the vehicle is parked normally; judging whether the current speed is positive, and only when the train has both traction and positive speed can forced relief braking be performed, but it cannot solve the above problems. Utility Model Content

[0004] The present invention is designed to solve the above problems and aims to provide a gear automatic selection type hydraulic manual auxiliary relief device that is easy to operate, can simply achieve brake relief, and can effectively prevent the risks of misoperation and forgetting to restore the position. In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] The utility model provides a gear automatic selection type hydraulic manual auxiliary relief device, which has the following characteristics: it includes a manual pump structure, a reversing valve module and a clamp, the manual pump structure is connected to the clamp through the reversing valve module, and the reversing valve module is connected to the auxiliary relief unit.

[0006] The automatic gear selection hydraulic manual assisted relief device provided by the present invention may also have the following features: the reversing valve module includes a shuttle valve, the shuttle valve includes a shuttle valve body and a valve core, and the valve core is movably arranged in the shuttle valve body.

[0007] In the gear automatic selection type hydraulic manual auxiliary relief device provided by the present invention, it can also have such a feature that the shuttle valve body is provided with a first connecting port, a second connecting port and a third connecting port, the first connecting port is connected to a first connecting pipe, and the end of the first connecting pipe away from the shuttle valve body is connected to the clamp; the second connecting port is connected to a second connecting pipe, and the end of the second connecting pipe away from the shuttle valve body is connected to the manual pump structure; the third connecting port is connected to a third connecting pipe, and the end of the third connecting pipe away from the shuttle valve body is connected to the auxiliary relief unit.

[0008] In the gear automatic selection type hydraulic manual assisted relief device provided by the present invention, it can also have such a feature that the reversing valve module also includes a first pressure switch, a second pressure switch and a pressure gauge, the first pressure switch and the pressure gauge are arranged on the first connecting pipe, and the second pressure switch is arranged on the shuttle valve body.

[0009] The gear automatic selection type hydraulic manual assisted relief device provided by the present invention may also have such a feature that the manual pump structure includes a manual pump oil tank, a manual pump and a pressure relief branch pipe, the manual pump oil tank is connected to the end of the second connecting pipe away from the shuttle valve body, the manual pump is arranged on the second connecting pipe, one end of the pressure relief branch pipe is connected to the second connecting pipe, and the other end of the pressure relief branch pipe is connected to the manual pump oil tank.

[0010] The gear automatic selection type hydraulic manual auxiliary relief device provided by the present invention may also have the following features: a one-way valve is provided on the second connecting pipe, and the one-way valve is located on both sides of the manual pump; and a first pressure relief valve is provided on the pressure relief branch pipe.

[0011] In the gear automatic selection type hydraulic manual auxiliary relief device provided by the present invention, it can also have such a feature that the auxiliary relief unit includes an auxiliary pump, an auxiliary oil tank and an auxiliary pressure relief branch pipe, the auxiliary oil tank is connected to the end of the third connecting pipe away from the shuttle valve body, the auxiliary pump is arranged on the third connecting pipe, one end of the auxiliary pressure relief branch pipe is connected to the third connecting pipe, and the other end of the auxiliary pressure relief branch pipe is connected to the auxiliary oil tank.

[0012] The automatic gear selection hydraulic manual auxiliary relief device provided by the present invention may also have such a feature that a second pressure relief valve is provided on the auxiliary pressure relief branch pipe.

[0013] The technical effect of the utility model is: the gear automatic selection type hydraulic manual auxiliary relief device provided by the utility model includes a manual pump structure, a reversing valve module and a clamp. The manual pump structure is connected to the clamp through the reversing valve module. The reversing valve module is connected to the auxiliary relief unit. The manual pump structure can manually control the switching of the relief braking function and the braking function. The auxiliary relief unit can assist the manual pump structure in switching the relief braking function and the braking function. The reversing valve module can prompt the working status of the manual pump structure and the auxiliary relief unit, thereby avoiding the risks brought by misoperation and forgetting to restore the gear.

[0014] Therefore, the gear automatic selection type hydraulic manual auxiliary relief device provided by the present invention is easy to operate, can simply achieve braking relief, and can effectively prevent risks caused by misoperation and forgetting to restore the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This manual includes the following drawings, which show the following contents:

[0016] Figure 1 It is a structural diagram of a hydraulic manual auxiliary relief device with automatic gear selection in an embodiment of the present utility model;

[0017] Figure 2 It is a structural diagram of the auxiliary relief unit in an embodiment of the present utility model.

[0018] Marked in the figure are: manual pump structure-10, manual pump oil tank-11, manual pump-12, pressure relief branch pipe-13, one-way valve-14, first pressure relief valve-15, reversing valve module-20, shuttle valve-21, shuttle valve body-211, valve core-212, first connecting pipe-22, second connecting pipe-23, third connecting pipe-24, first pressure switch-25, second pressure switch-26, pressure gauge-27, clamp-30, auxiliary relief unit-40, auxiliary pump-41, auxiliary oil tank-42, auxiliary pressure relief branch pipe-43, second pressure relief valve-44. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation methods of the present invention through the description of the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0020] Figure 1 It is a structural schematic diagram of a hydraulic manual auxiliary relief device with automatic gear selection in an embodiment of the present utility model.

[0021] like Figure 1As shown, the gear automatic selection type hydraulic manual auxiliary relief device provided by the present invention includes a manual pump structure 10, a reversing valve module 20 and a clamp 30. The manual pump structure 10 is connected to the clamp 30 through the reversing valve module 20. The reversing valve module 20 is connected to the auxiliary relief unit 40. The manual pump structure 10 can manually control the switching of the braking relief function and the braking function. The auxiliary relief unit 40 can assist the manual pump structure in switching the braking relief function and the braking function. The reversing valve module 20 can prompt the working status of the manual pump structure 10 and the auxiliary relief unit 40, thereby avoiding the risks brought by misoperation and forgetting to restore the gear.

[0022] The reversing valve module 20 includes a shuttle valve 21, which includes a shuttle valve body 211 and a valve core 212. The valve core 212 is movably arranged in the shuttle valve body 211. The shuttle valve body 211 is provided with a first connection port, a second connection port and a third connection port. The valve core 212 can block the second connection port or the third connection port, thereby changing the flow direction of the hydraulic oil in the shuttle valve body 211.

[0023] The first connecting port is connected to the first connecting pipe 22, one end of the first connecting pipe 22 is connected to the first connecting port of the shuttle valve body 211, and the end of the first connecting pipe 22 away from the shuttle valve body 211 is connected to the clamp 30; the second connecting port is connected to the second connecting pipe 23, one end of the second connecting pipe 23 is connected to the second connecting port of the shuttle valve body 211, and the end of the second connecting pipe 23 away from the shuttle valve body 211 is connected to the manual pump structure 10; the third connecting port is connected to the third connecting pipe 24, one end of the third connecting pipe 24 is connected to the third connecting port of the shuttle valve body 211, and the end of the third connecting pipe 24 away from the shuttle valve body 211 is connected to the auxiliary relief unit 40, thereby connecting the manual pump structure 10, the clamp 30 and the auxiliary relief unit 40 through the reversing valve module 20.

[0024] The reversing valve module 20 also includes a first pressure switch 25, a second pressure switch 26 and a pressure gauge 27. The first pressure switch 25 is arranged on the first connecting pipe 22. When the pipeline pressure of the first connecting pipe 22 reaches a set value, the first pressure switch 25 can send a brake release completion signal to the vehicle control system and display it on the control panel, so that the operator can know that the brake release process has ended; the pressure gauge 27 is arranged on the first connecting pipe 22 and can detect the real-time pressure of the pipeline in the first connecting pipe 22, so that the operator can know the real-time pressure of the pipeline in the first connecting pipe 22, facilitate inspection and maintenance, and improve the reliability of the structure; the second pressure switch 25 is arranged on the shuttle valve body 211. When the pressure in the shuttle valve body 211 reaches a set value, the second pressure switch 25 can send a signal to the vehicle control system. At this time, the manual pump structure 10 is activated, the braking function fails, and the auxiliary relief unit 40 stops working.

[0025] The manual pump structure 10 includes a manual pump tank 11, a manual pump 12, and a pressure relief branch pipe 13. The manual pump tank 11 is connected to the end of the second connecting pipe 23 away from the shuttle valve body 211. The manual pump 12 is arranged on the second connecting pipe 23. The manual pump 12 can push the hydraulic oil in the manual pump tank 11 into the shuttle valve body 211. One end of the pressure relief branch pipe 13 is connected to the second connecting pipe 23, and the other end of the pressure relief branch pipe 13 is connected to the manual pump tank 11. A one-way valve 14 is provided on the second connecting pipe 23. The two one-way valves 14 are respectively located on both sides of the manual pump 12. The one-way valves 14 can limit the flow direction of the hydraulic oil in the second connecting pipe 23, so that the hydraulic oil can only flow from the manual pump tank 11 through the manual pump 12 to the shuttle valve body 211. The connection between the pressure relief branch pipe 13 and the second connecting pipe 23 is located between the manual pump tank 11 and the one-way valve 14. The pressure relief branch pipe 13 is provided with a first pressure relief valve 15. When the first pressure relief valve 15 is opened, the hydraulic oil can flow back to the manual pump tank 11 through the pressure relief branch pipe 13.

[0026] Figure 2 It is a structural diagram of the auxiliary relief unit in an embodiment of the present utility model.

[0027] like Figure 2 As shown, the auxiliary relief unit 40 includes an auxiliary pump 41, an auxiliary oil tank 42 and an auxiliary pressure relief branch pipe 43. The auxiliary oil tank 42 is connected to one end of the third connecting pipe 24 away from the shuttle valve body 211. The auxiliary pump 41 is arranged on the third connecting pipe 24. The auxiliary pump 41 can push the hydraulic oil in the auxiliary oil tank 42 into the shuttle valve body 211. One end of the auxiliary pressure relief branch pipe 43 is connected to the third connecting pipe 24, and the other end of the auxiliary pressure relief branch pipe 43 is connected to the auxiliary oil tank 42. A second pressure relief valve 44 is provided on the auxiliary pressure relief branch pipe 43. When the second pressure relief valve 44 is opened, the hydraulic oil can be supplied to flow back to the auxiliary oil tank 42 through the auxiliary pressure relief branch pipe 43.

[0028] When the gear automatic selection type hydraulic manual auxiliary relief device provided by the present invention is working, when the train needs auxiliary relief, the auxiliary relief unit 40 is pressurized by the auxiliary pump 41, and the hydraulic oil in the auxiliary oil tank 42 is pushed into the shuttle valve body 211, pushing the valve core 212 to block the second connection port on the shuttle valve body 211. At the same time, it is connected to the clamp 30 through the first connection port, and continues to pressurize to release the clamp 30; when the train needs braking, the second pressure relief valve 44 is opened, and the hydraulic oil in the shuttle valve body 211 flows back to the auxiliary oil tank 42 due to pressure through the auxiliary pressure relief branch pipe 43. When the train needs to use the manual pump structure 10 to relieve the vehicle, the manual pump 12 is operated to increase pressure, pushing the valve core 212 to block the third connection port on the shuttle valve body 211. At the same time, the clamp 30 is connected through the first connection port, and the clamp is released after continuing to increase pressure; when the train needs to brake, the first pressure relief valve 15 is manually opened, and the hydraulic oil in the shuttle valve body 211 and the second connecting pipe 23 flows back to the manual pump tank 11 through the pressure relief branch pipe 13.

[0029] Functions and Effects of the Embodiments

[0030] The gear automatic selection type hydraulic manual auxiliary relief device provided by the present invention includes a manual pump structure 10, a reversing valve module 20 and a clamp 30. The manual pump structure 10 is connected to the clamp 30 through the reversing valve module 20. The reversing valve module 20 is connected to the auxiliary relief unit 40. The manual pump structure 10 can manually control the switching of the braking relief function and the braking function. The auxiliary relief unit 40 can assist the manual pump structure in switching the braking relief function and the braking function. The reversing valve module 20 can prompt the working status of the manual pump structure 10 and the auxiliary relief unit 40, thereby avoiding the risks brought by misoperation and forgetting to restore the gear.

[0031] When the gear automatic selection type hydraulic manual auxiliary relief device provided by the present invention is working, when the train needs auxiliary relief, the auxiliary relief unit 40 is pressurized by the auxiliary pump 41, and the hydraulic oil in the auxiliary oil tank 42 is pushed into the shuttle valve body 211, pushing the valve core 212 to block the second connection port on the shuttle valve body 211. At the same time, it is connected to the clamp 30 through the first connection port, and continues to pressurize to release the clamp 30; when the train needs braking, the second pressure relief valve 44 is opened, and the hydraulic oil in the shuttle valve body 211 flows back to the auxiliary oil tank 42 due to pressure through the auxiliary pressure relief branch pipe 43. When the train needs to use the manual pump structure 10 to relieve the vehicle, the manual pump 12 is operated to increase pressure, pushing the valve core 212 to block the third connection port on the shuttle valve body 211. At the same time, the clamp 30 is connected through the first connection port, and the clamp is released after continuing to increase pressure; when the train needs to brake, the first pressure relief valve 15 is manually opened, and the hydraulic oil in the shuttle valve body 211 and the second connecting pipe 23 flows back to the manual pump tank 11 through the pressure relief branch pipe 13.

[0032] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A hydraulic manual auxiliary relief device with automatic gear selection, characterized in that: The invention comprises a manual pump structure (10), a reversing valve module (20) and a clamp (30), wherein the manual pump structure (10) is connected to the clamp (30) via the reversing valve module (20), and the reversing valve module (20) is connected to an auxiliary relief unit (40).

2. The gear automatic selection type hydraulic manual auxiliary relief device according to claim 1, characterized in that: The reversing valve module (20) comprises a shuttle valve (21), wherein the shuttle valve (21) comprises a shuttle valve body (211) and a valve core (212), wherein the valve core (212) is movably arranged in the shuttle valve body (211).

3. The gear automatic selection type hydraulic manual auxiliary relief device according to claim 2, characterized in that: The shuttle valve body (211) is provided with a first connection port, a second connection port and a third connection port, the first connection port is connected to a first connection pipe (22), and the end of the first connection pipe (22) away from the shuttle valve body (211) is connected to the clamp (30); the second connection port is connected to a second connection pipe (23), and the end of the second connection pipe (23) away from the shuttle valve body (211) is connected to the manual pump structure (10); the third connection port is connected to a third connection pipe (24), and the end of the third connection pipe (24) away from the shuttle valve body (211) is connected to the auxiliary relief unit (40).

4. The gear automatic selection type hydraulic manual auxiliary relief device according to claim 3, characterized in that: The reversing valve module (20) further comprises a first pressure switch (25), a second pressure switch (26) and a pressure gauge (27); the first pressure switch (25) and the pressure gauge (27) are arranged on the first connecting pipe (22); and the second pressure switch (26) is arranged on the shuttle valve body (211).

5. The gear automatic selection type hydraulic manual auxiliary relief device according to claim 4, characterized in that: The manual pump structure (10) comprises a manual pump oil tank (11), a manual pump (12) and a pressure relief branch pipe (13); the manual pump oil tank (11) is connected to one end of the second connecting pipe (23) away from the shuttle valve body (211); the manual pump (12) is arranged on the second connecting pipe (23); one end of the pressure relief branch pipe (13) is connected to the second connecting pipe (23); and the other end of the pressure relief branch pipe (13) is connected to the manual pump oil tank (11).

6. The gear automatic selection type hydraulic manual auxiliary relief device according to claim 5, characterized in that: A one-way valve (14) is provided on the second connecting pipe (23), and the one-way valve (14) is located on both sides of the manual pump (12); and a first pressure relief valve (15) is provided on the pressure relief branch pipe (13).

7. The gear automatic selection type hydraulic manual auxiliary relief device according to claim 6, characterized in that: The auxiliary relief unit (40) includes an auxiliary pump (41), an auxiliary oil tank (42) and an auxiliary pressure relief branch pipe (43); the auxiliary oil tank (42) is connected to one end of the third connecting pipe (24) away from the shuttle valve body (211); the auxiliary pump (41) is arranged on the third connecting pipe (24); one end of the auxiliary pressure relief branch pipe (43) is connected to the third connecting pipe (24); and the other end of the auxiliary pressure relief branch pipe (43) is connected to the auxiliary oil tank (42).

8. The gear automatic selection type hydraulic manual auxiliary relief device according to claim 7, characterized in that: The auxiliary pressure relief branch pipe (43) is provided with a second pressure relief valve (44).

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