Parking brake for electric drive wheel reducer

A parking brake, electric drive technology, applied in the direction of brake actuators, gear transmission mechanisms, mechanical equipment, etc., can solve the problems of single-axle drive or electric drive vehicles that cannot all meet the requirements of steering drive axles, and achieve compact structure and movement. The effect of smooth, efficient use of space

Inactive Publication Date: 2018-05-11
SPECIAL VEHICLE TECH CENT OF HUBEI AEROSPACE TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a parking brake for a wheel-side electric drive reducer, which is used to solve the technical problem that the two types of parking brakes in the prior art cannot satisfy the steering drive axle and single-axle drive or electric drive vehicles. Realized the parking brake of the all-electric drive special off-road vehicle transmission system, compact structure, effective use of space, and effective technical effects of vehicle information collection

Method used

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  • Parking brake for electric drive wheel reducer
  • Parking brake for electric drive wheel reducer

Examples

Experimental program
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Effect test

Embodiment 1

[0044] An embodiment of the present invention provides a parking brake for a wheel-side electric drive reducer, please refer to figure 1 and figure 2 , the parking brake comprises:

[0045] A cylinder body 3, the cylinder body 3 has an accommodating space;

[0046] a piston 4, the piston 4 is arranged in the accommodating space;

[0047] A return spring 5, the return spring 5 is arranged in the accommodating space, and the return spring 5 is connected to the piston 4;

[0048] Further, the parking brake further includes: the cylinder body 3 is hydraulically controlled, and the return spring 5 is a disc spring.

[0049] Specifically, there is an accommodating space in the cylinder body 3, and the piston 4 is arranged in the accommodating space. The cylinder body 3 is hydraulically controlled, and the hydraulic control has the advantages of light weight, small volume, The motion inertia is small, the return spring 5 is arranged in the accommodating space, and the return spr...

Embodiment 2

[0060] The embodiment of the present invention provides an all-electric drive off-road vehicle, please refer to figure 1 and figure 2 , the off-road vehicle includes a parking brake.

[0061] Among them, the wheel-side electric drive reducer and the parking brake are integrated into one design, the wheel-side electric drive reducer has a set of input and output ports on each side, each side mechanism has a parking brake function, and the parking brake is set On the input side connected to the drive motor.

[0062] Wherein, the parking brake includes:

[0063] A cylinder body 3, the cylinder body 3 has an accommodating space;

[0064] a piston 4, the piston 4 is arranged in the accommodating space;

[0065] A return spring 5, the return spring 5 is arranged in the accommodating space, and the return spring 5 is connected to the piston 4;

[0066] Further, the parking brake further includes: the cylinder body 3 is hydraulically controlled, and the return spring 5 is a disc...

Embodiment 3

[0076] The embodiment of the present invention provides a parking brake control principle for a parking brake for a wheel-side electric drive reducer. Please refer to figure 1 .

[0077] When the parking brake control valve 1 is in the disconnected state, the hydraulic pressure in the system is zero, and under the action of the return spring 5, the piston 4 drives the piston shaft 6 to be compressed to the left end of the cylinder body 3 shown in the figure, and the piston shaft 6 and The parking stroke block 7 is separated, the switch of the parking indicator light 8 connected to the parking stroke block 7 is turned on, and it is in the state of parking brake at this time; when the parking brake control valve 1 is connected, the electric pump 2 Provide hydraulic pressure to enter the cylinder body 3. Under the hydraulic pressure in the system, it overcomes the compression force of the return spring 5 and pushes the piston 4 to drive the piston shaft 6 to move to the right as ...

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Abstract

The invention discloses a parking brake for an electric drive wheel reducer. The parking device for the electric drive wheel reducer is characterized in that the parking brake comprises a cylinder body, a piston, a reset spring, a piston shaft, a parking stroke block and an electric pump; one end of the piston shaft is connected with the piston, and the reset spring acts on the piston to make thepiston shaft move in parallel; the parking stroke block is connected with the other end of the piston shaft, and under the effect of the parallel movement of the piston shaft, the parking stroke blockis made to open and close; and the electric pump is connected with the cylinder body. By adoption of the parking brake for the electric-drive wheel reducer, the technical problem that in the prior art, both types of parking brake cannot meet the requirements of steering drive axle vehicles and single-axle drive vehicles or electric drive vehicles is solved, and parking braking of a full-electricdrive special off-road vehicle transmission system is achieved; and the technical effects of compact structure, effective space utilization and effective vehicle information acquisition are achieved.

Description

technical field [0001] The invention relates to the technical field of special vehicles, in particular to a parking brake for a wheel-side electric drive reducer. Background technique [0002] At present, there are two types of parking brakes, one is the wheel brake shared by the vehicle braking system, which is used for the integral drive axle or the disconnected drive axle wheel hub and brake assembly; the other is the central brake, which It is a parking brake device specially designed in the transmission system. It is generally installed at the output shaft end of the transmission or the input shaft end of the drive axle, and the braking torque generated by it acts on the drive shaft. [0003] However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application found that the above-mentioned prior art has at least the following technical problems: [0004] Due to the limitations of the tw...

Claims

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Application Information

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IPC IPC(8): F16D65/14F16D121/04
CPCF16D65/14F16D2121/04
Inventor 张庚李红唐琛郑建辉
Owner SPECIAL VEHICLE TECH CENT OF HUBEI AEROSPACE TECH RES INST
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