Manual pressure relief device for hydraulic braking of unmanned vehicle

Abstract

The utility model belongs to the field of automobile braking, and discloses an unmanned vehicle hydraulic braking manual pressure relief device which comprises an EHB oil can, an EHB plunger pump connected with the EHB oil can, a driving piece, a first connecting piece and a second connecting piece, the driving piece comprises an EHB motor and an EHB controller, an EHB worm and gear reducer at the output end of the EHB motor is provided with an EHB encoder, and the output end of the EHB encoder is connected with an EHB push rod; conveying channels are formed in a first oil conveying piece and a second oil conveying piece at the liquid outlet end of the EHB plunger pump, the first oil conveying piece and the second oil conveying piece are connected with a first brake piece on the first connecting piece and a second brake piece on the second connecting piece respectively, and a manual front pressure relief piece and a manual rear pressure relief piece are arranged on the EHB plunger pump and the second oil conveying piece respectively. The EHB plunger pump is driven by the EHB push rod to move so as to release brake fluid, so that the pressure in the brake oil pipe is quickly released when a vehicle is in a brake state, and the vehicle is made to move.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile brakes, and in particular relates to a manual pressure relief device for hydraulic brakes of unmanned vehicles. Background Art

[0002] Unmanned driving technology has made significant progress in recent years. This technological breakthrough has enabled autonomous vehicles to operate in multiple fields, significantly improving transportation efficiency and safety. However, as unmanned vehicle technology matures, the safety and reliability of their braking systems have become a focus of attention. As a core component of safety, the reliability and emergency response capabilities of the braking system are crucial. Traditional hydraulic braking systems for unmanned vehicles typically rely on automatic control systems for braking management. However, in certain emergency situations, such as system failures or power outages, the automatic control system may not function properly. In these situations, a pressure relief device with manual intervention is required to ensure the safety of the unmanned vehicle. However, existing manual pressure relief devices have certain drawbacks. The pressure relief device requires an EHB plunger pump to operate, which in turn requires the EHB plunger pump to operate. Consequently, if problems arise with these existing devices, the pressure in the brake oil pipe cannot be quickly released and the vehicle cannot be moved while braking. Utility Model Content

[0003] The purpose of the utility model is to provide a manual pressure relief device for hydraulic brakes of unmanned vehicles to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned object, the present utility model provides the following technical solutions: a manual pressure relief device for hydraulic brake of an unmanned vehicle, comprising an EHB oil pot, an EHB plunger pump and a driving member for driving the EHB plunger pump;

[0005] The driving component includes an EHB motor and an EHB controller for controlling the EHB motor. The output end of the EHB motor is connected to an EHB worm gear reducer, an EHB encoder is installed on the EHB worm gear reducer, and the output end of the EHB worm gear reducer is connected to an EHB push rod. The EHB plunger pump is connected to an EHB oil pot, and a first oil delivery component and a second oil delivery component are installed at the liquid outlet end of the EHB plunger pump.

[0006] The first connecting member and the second connecting member are used to connect the tire, and the first braking member and the second braking member are connected to the connecting member and the second connecting member respectively for clamping or releasing.

[0007] A delivery channel for delivering hydraulic oil along a preset path is formed inside the first oil delivery member and the second oil delivery member, and one end of the first oil delivery member and the second oil delivery member are connected to the first brake member and the second brake member respectively, and a manual front pressure relief member is also connected to the EHB plunger pump, and a manual rear pressure relief member is also installed on the second oil delivery member.

[0008] Preferably, the first oil delivery component includes a front hydraulic brake main oil pipe, one end of the front hydraulic brake main oil pipe is connected to the EHB plunger pump, and the other end is fixedly connected to a front hydraulic pipeline four-way interface, the front hydraulic pipeline four-way interface is connected to the right front hydraulic brake oil pipe and the left front hydraulic brake oil pipe, an EHB pressure sensor is installed on the front hydraulic brake main oil pipe, and the EHB pressure sensor is electrically connected to the EHB controller.

[0009] Preferably, the second oil delivery member includes a rear hydraulic brake main oil pipe, one end of the rear hydraulic brake main oil pipe is connected to the EHB plunger pump, and the other end is fixedly connected to a rear hydraulic pipeline four-way interface, and the rear hydraulic pipeline four-way interface is connected to the left rear hydraulic brake oil pipe and the right rear hydraulic brake oil pipe.

[0010] Preferably, the first connecting member includes a left front brake disc and a right front brake disc, and the left front brake disc is located on one side of the right front brake disc.

[0011] Preferably, the second connecting member includes a left rear brake disc and a right rear brake disc, and the left rear brake disc is located on one side of the right rear brake disc.

[0012] Preferably, the first brake component includes a left front hydraulic brake caliper and a right front hydraulic brake caliper, the left front hydraulic brake caliper and the right front hydraulic brake caliper are respectively installed on the left front brake disc and the right front brake disc, and the left front hydraulic brake oil pipe is connected to the left front hydraulic brake caliper, and the right front hydraulic brake oil pipe is connected to the right front hydraulic brake caliper.

[0013] Preferably, the second brake component includes a left rear hydraulic brake caliper and a right rear hydraulic brake caliper, the left rear hydraulic brake caliper and the right rear hydraulic brake caliper are respectively installed on the left rear brake disc and the right rear brake disc, and the left rear hydraulic brake oil pipe is connected to the left rear hydraulic brake caliper, and the right rear hydraulic brake oil pipe is connected to the right rear hydraulic brake caliper.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) The utility model drives the EHB worm gear reducer through the EHB motor, changes the force transmission direction and increases the driving force of the EHB motor through the EHB worm gear reducer, thereby driving the EHB push rod to move back and forth, so that the EHB push rod drives the EHB plunger pump to move, thereby releasing the brake and tightening the brake; when a problem occurs with the vehicle, the pressure in the brake oil pipe can be quickly released and the vehicle can be moved when the vehicle is in a braking state.

[0016] (2) The utility model completely adopts mechanical pressure relief, which will not affect the signal control and signal acquisition of the electronic control unit when a fault occurs in the unmanned vehicle chassis. The unmanned vehicle electronic control unit does not need to be powered off, and the fault of the unmanned vehicle electronic control unit is retained, which is convenient for later problem troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the three-dimensional diagrams of the present utility model;

[0018] Figure 2 This is the second stereogram of the utility model;

[0019] In the figure: 1. Left front brake disc; 2. Left front hydraulic brake caliper; 3. Left front hydraulic brake oil pipe; 4. EHB motor; 5. EHB controller; 6. EHB encoder; 7. EHB oil tank; 10. EHB pressure sensor; 11. Front hydraulic line cross-connector; 12. Right front hydraulic brake oil pipe; 13. Front hydraulic brake main oil pipe; 14. Manual front pressure relief device; 15. EHB plunger pump; 16. EHB push rod; 17. EHB worm gear reducer; 20. Rear hydraulic brake main oil pipe; 21. Rear hydraulic line cross-connector; 22. Left rear hydraulic brake oil pipe; 23. Left rear hydraulic brake caliper; 24. Left rear brake disc; 25. Right rear hydraulic brake oil pipe; 26. Right front hydraulic brake caliper; 27. Right front brake disc; 28. Right rear hydraulic brake caliper; 29. ​​Right rear brake disc; 30. Manual rear pressure relief device. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 2 As shown, the utility model provides the following technical solutions:

[0022] A manual pressure relief device for hydraulic brakes of an unmanned vehicle, comprising an EHB oil pot 7, an EHB plunger pump 15, and a driving member for driving the EHB plunger pump 15;

[0023] The driving component includes an EHB motor 4 and an EHB controller 5 for controlling the EHB motor 4. The output end of the EHB motor 4 is connected to an EHB worm gear reducer 17. The EHB worm gear reducer 17 is equipped with an EHB encoder 6. The output end of the EHB worm gear reducer 17 is connected to an EHB push rod 16. The EHB plunger pump 15 is connected to the EHB oil pot 7. The liquid outlet end of the EHB plunger pump 15 is equipped with a first oil delivery component and a second oil delivery component.

[0024] The pressure relief device further comprises a first connecting member and a second connecting member for connecting to the tire, wherein the connecting member and the second connecting member are respectively connected to a first braking member and a second braking member for clamping or releasing;

[0025] A delivery channel for delivering hydraulic oil along a preset path is formed inside the first oil delivery member and the second oil delivery member, and one end of the first oil delivery member and the second oil delivery member are connected to the first brake member and the second brake member respectively. A manual front pressure relief member 14 is also connected to the EHB plunger pump 15, and a manual rear pressure relief member 30 is also installed on the second oil delivery member.

[0026] Through the above technical solution, when the unmanned vehicle is braking, the EHB controller 5 controls the EHB motor 4 to work, and the EHB motor 4 drives the EHB worm gear reducer 17 to work, and the EHB worm gear reducer 17 drives the EHB push rod 16 to move back and forth, so that the EHB push rod 16 drives the EHB plunger pump 15 to work, and when the EHB motor 4 drives the EHB worm gear reducer 17, the EHB worm gear reducer 17 changes the force transmission direction and increases the driving force of the EHB motor 4, and the EHB controller The device 5 monitors the pressure in the first oil delivery member and the second oil delivery member through the EHB pressure sensor 10, completes the EHB pressure control, delivers the brake fluid through the first delivery member, delivers the brake fluid to the front brake member, and then allows the front brake member to clamp the front connecting member. When the front connecting member needs to be released, the EHB plunger pump 15 works, and the EHB plunger pump 15 draws back the brake fluid through the first delivery member and delivers it back to the inside of the EHB oil pot 7, and then draws out the brake fluid in the front brake member, so that the front brake member releases the front connecting member, and delivers the brake fluid through the second delivery member. The dynamic fluid is delivered to the rear brake part, which allows the rear brake part to clamp the rear connecting part. When the rear connecting part needs to be released, the EHB plunger pump 15 works, and the EHB plunger pump 15 draws back the brake fluid through the second delivery part and delivers it back to the inside of the EHB oil pot 7, thereby extracting the brake fluid in the rear brake part, allowing the rear brake part to release the rear connecting part, thereby braking. Since the manual front pressure relief part 14 is connected to the first delivery part, and the manual rear pressure relief part 30 is connected to the second delivery part, when the pressure in the first delivery part and the second delivery part cannot be released, the manual front pressure relief part is opened. 14 and the manual rear pressure relief member 30, so that the brake fluid in the first conveying member and the second conveying member is discharged through the manual front pressure relief member 14 and the manual rear pressure relief member 30, thereby releasing the brake and releasing the hydraulic brake of the unmanned vehicle, so that the unmanned vehicle can move. When the pressure in the first conveying member and the second conveying member is consistent with the air pressure, the manual front pressure relief member 14 and the manual rear pressure relief member 30 are closed, so that the air cannot flow back into the first conveying member and the second conveying member. After the unmanned vehicle is repaired, there is no need to perform the air exhaust operation and the hydraulic brake can be used directly.

[0027] Specifically, in one embodiment, regarding the first oil delivery member, as Figure 1-Figure 2 As shown, the first oil delivery component includes a front hydraulic brake main oil pipe 13, one end of the front hydraulic brake main oil pipe 13 is connected to the EHB plunger pump 15, and the other end is fixedly connected to the front hydraulic pipeline four-way interface 11, the front hydraulic pipeline four-way interface 11 is connected to the right front hydraulic brake oil pipe 12 and the left front hydraulic brake oil pipe 3, and the front hydraulic brake main oil pipe 13 is installed with an EHB pressure sensor 10, and the EHB pressure sensor 10 is electrically connected to the EHB controller 5.

[0028] In this embodiment, when it is necessary to deliver brake fluid to the front brake parts, the EHB plunger pump 15 is operated, and the EHB plunger pump 15 pressurizes the brake fluid inside the EHB oil pot 7 to the inside of the front hydraulic brake main oil pipe 13, thereby performing wire-controlled control of the EHB, and delivering brake fluid through the front hydraulic brake main oil pipe 13, so that the brake fluid is delivered to the front hydraulic pipeline four-way interface 11, and the brake fluid is delivered to the right front hydraulic brake oil pipe 12 and the left front hydraulic brake oil pipe 3 respectively through the front hydraulic pipeline four-way interface 11, and the brake fluid is delivered to the front brake parts through the right front hydraulic brake oil pipe 12 and the left front hydraulic brake oil pipe 3, so that the front brake parts clamp the front connecting parts. When it is necessary to release the front connecting parts, the EHB plunger pump 15 is operated, and the EHB plunger pump 15 draws back the brake fluid through the front hydraulic brake main oil pipe 13 and delivers it back to the inside of the EHB oil pot 7, thereby drawing out the brake fluid in the front brake parts, so that the front brake parts release the front connecting parts.

[0029] In addition, in the present invention, regarding the second oil delivery member, Figure 1-Figure 2 As shown, the second oil delivery component includes a rear hydraulic brake main oil pipe 20, one end of the rear hydraulic brake main oil pipe 20 is connected to the EHB plunger pump 15, and the other end is fixedly connected to a rear hydraulic pipeline four-way interface 21, and the rear hydraulic pipeline four-way interface 21 is connected to the left rear hydraulic brake oil pipe 22 and the right rear hydraulic brake oil pipe 25.

[0030] In this embodiment, the EHB plunger pump 15 is operated, and the EHB plunger pump 15 pressurizes the brake fluid inside the EHB oil pot 7 to the inside of the rear hydraulic brake main oil pipe 20, thereby performing wire-controlled control of the EHB, and transports the brake fluid through the rear hydraulic brake main oil pipe 20, so that the brake fluid is transported to the rear hydraulic pipeline four-way interface 21, and the brake fluid is respectively transported to the left rear hydraulic brake oil pipe 22 and the right rear hydraulic brake oil pipe 25 through the rear hydraulic pipeline four-way interface 21, and the brake fluid is transported to the front brake parts through the left rear hydraulic brake oil pipe 22 and the right rear hydraulic brake oil pipe 25, so that the rear brake parts clamp the rear connecting parts. When the rear connecting parts need to be released, the EHB plunger pump 15 is operated, and the EHB plunger pump 15 draws back the brake fluid through the rear hydraulic brake main oil pipe 20 and transports it back to the inside of the EHB oil pot 7, thereby extracting the brake fluid in the rear brake parts, so that the rear brake parts release the front connecting parts.

[0031] Specifically, in one embodiment, regarding the first connecting member, as Figure 1 As shown, the first connecting member includes a left front brake disc 1 and a right front brake disc 27. The left front brake disc 1 is located on one side of the right front brake disc 27, and the left front wheel and the right front wheel are connected respectively through the left front brake disc 1 and the right front brake disc 27.

[0032] In addition, regarding the above-mentioned second connecting member, Figure 2As shown, the second connecting member includes a left rear brake disc 24 and a right rear brake disc 29. The left rear brake disc 24 is located on one side of the right rear brake disc 29, and the left rear wheel and the right rear wheel are connected respectively through the left rear brake disc 24 and the right rear brake disc 29.

[0033] Specifically, in one embodiment, regarding the first brake member, as Figure 1-Figure 2 As shown, the first brake component includes a left front hydraulic brake caliper 2 and a right front hydraulic brake caliper 26, which are respectively installed on a left front brake disc 1 and a right front brake disc 27, and a left front hydraulic brake oil pipe 3 is connected to the left front hydraulic brake caliper 2, and a right front hydraulic brake oil pipe 12 is connected to the right front hydraulic brake caliper 26.

[0034] In this embodiment, when the brake fluid is delivered, the left front brake disc 1 and the right front brake disc 27 are clamped or released by the left front hydraulic brake caliper 2 and the right front hydraulic brake caliper 26.

[0035] In addition, in the present invention, regarding the second brake member, as Figure 1 As shown, the second brake component includes a left rear hydraulic brake caliper 23 and a right rear hydraulic brake caliper 28, which are respectively mounted on a left rear brake disc 24 and a right rear brake disc 29, and a left rear hydraulic brake oil pipe 22 is connected to the left rear hydraulic brake caliper 23, and a right rear hydraulic brake oil pipe 25 is connected to the right rear hydraulic brake caliper 28.

[0036] In this embodiment, when the brake fluid is delivered, the left rear brake disc 24 and the right rear brake disc 29 are clamped or released by the left rear hydraulic brake caliper 23 and the right rear hydraulic brake caliper 28 .

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual pressure relief device for hydraulic brakes of unmanned vehicles, characterized by: It includes an EHB oil pot (7), an EHB plunger pump (15), and a driving member for driving the EHB plunger pump (15); The driving component includes an EHB motor (4) and an EHB controller (5) for controlling the EHB motor (4); an output end of the EHB motor (4) is connected to an EHB worm gear reducer (17); an EHB encoder (6) is installed on the EHB worm gear reducer (17); and an output end of the EHB worm gear reducer (17) is connected to an EHB push rod (16); the EHB plunger pump (15) is connected to an EHB oil pot (7); and a first oil delivery component and a second oil delivery component are installed at a liquid outlet end of the EHB plunger pump (15); The tire is further provided with a first connecting member and a second connecting member for connecting the tire, wherein the first connecting member and the second connecting member are respectively connected to a first braking member and a second braking member for clamping or releasing the tire; A delivery channel for delivering hydraulic oil along a preset path is formed inside the first oil delivery member and the second oil delivery member, and one end of the first oil delivery member and the second oil delivery member are connected to the first brake member and the second brake member respectively. A manual front pressure relief member (14) is also connected to the EHB plunger pump (15), and a manual rear pressure relief member (30) is also installed on the second oil delivery member.

2. The manual pressure relief device for hydraulic brakes of an unmanned vehicle according to claim 1, characterized in that: The first oil delivery member comprises a front hydraulic brake main oil pipe (13), one end of the front hydraulic brake main oil pipe (13) is connected to the EHB plunger pump (15), and the other end is fixedly connected to a front hydraulic pipeline four-way interface (11), the front hydraulic pipeline four-way interface (11) is connected to a right front hydraulic brake oil pipe (12) and a left front hydraulic brake oil pipe (3), an EHB pressure sensor (10) is installed on the front hydraulic brake main oil pipe (13), and the EHB pressure sensor (10) is electrically connected to the EHB controller (5).

3. The manual pressure relief device for hydraulic brakes of an unmanned vehicle according to claim 1, characterized in that: The second oil delivery member comprises a rear hydraulic brake main oil pipe (20), one end of the rear hydraulic brake main oil pipe (20) is connected to the EHB plunger pump (15), and the other end is fixedly connected to a rear hydraulic pipeline four-way interface (21), and the rear hydraulic pipeline four-way interface (21) is connected to a left rear hydraulic brake oil pipe (22) and a right rear hydraulic brake oil pipe (25).

4. The manual pressure relief device for hydraulic brakes of an unmanned vehicle according to claim 2, characterized in that: The first connecting member comprises a left front brake disc (1) and a right front brake disc (27), wherein the left front brake disc (1) is located on one side of the right front brake disc (27).

5. The manual pressure relief device for hydraulic brakes of an unmanned vehicle according to claim 3, characterized in that: The second connecting member comprises a left rear brake disc (24) and a right rear brake disc (29), wherein the left rear brake disc (24) is located on one side of the right rear brake disc (29).

6. The manual pressure relief device for hydraulic brakes of an unmanned vehicle according to claim 4, characterized in that: The first brake component comprises a left front hydraulic brake caliper (2) and a right front hydraulic brake caliper (26), wherein the left front hydraulic brake caliper (2) and the right front hydraulic brake caliper (26) are respectively mounted on the left front brake disc (1) and the right front brake disc (27), and the left front hydraulic brake oil pipe (3) is connected to the left front hydraulic brake caliper (2), and the right front hydraulic brake oil pipe (12) is connected to the right front hydraulic brake caliper (26).

7. The manual pressure relief device for hydraulic brakes of an unmanned vehicle according to claim 5, characterized in that: The second brake component comprises a left rear hydraulic brake caliper (23) and a right rear hydraulic brake caliper (28), wherein the left rear hydraulic brake caliper (23) and the right rear hydraulic brake caliper (28) are respectively mounted on the left rear brake disc (24) and the right rear brake disc (29), and the left rear hydraulic brake oil pipe (22) is connected to the left rear hydraulic brake caliper (23), and the right rear hydraulic brake oil pipe (25) is connected to the right rear hydraulic brake caliper (28).

Images