Wet-type parking brake and engineering machinery

A technology of parking brakes and brakes, which is applied in the direction of brake actuators, mechanical equipment, gear transmission mechanisms, etc., can solve the problems of easy wear of seals, dry grinding of dynamic sealing surfaces, delays in braking and opening processes, etc., to achieve The effect of avoiding friction plate wear, high reliability, and shortening response time

Pending Publication Date: 2018-10-19
SUOTE TRANSMISSION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing brakes, because the air in the brake chamber cannot be discharged, there is a mixture of hydraulic oil and a large amount of air in the brake chamber, which will cause cavitation under the action of the cracking pressure, and the cavitation will cause the following problems to the brake:
[0005] 1) Fatigue damage such as pitting and peeling of seals and sealing surfaces
[0006] 2) A large number of air bubbles cause local "dry grinding" phenomenon on the dynamic sealing surface, and the seal is easy to wear
[0007] 3) Bubble collapse produces heat, which leads to an increase in oil temperature and accelerates oil deterioration
[0008] 4) Due to the large air compression rate, the braking and opening process is delayed

Method used

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  • Wet-type parking brake and engineering machinery

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 A schematic structural view of the wet parking brake provided in Embodiment 1 of the present invention; figure 1 As shown, the wet parking brake provided by Embodiment 1 of the present invention includes a brake body 1, and the brake body 1 is provided with a brake oil passage 3 communicating with the oil chamber 2, and the brake body 1 is also provided with a The auxiliary oil passage 4 communicated with the oil chamber 2 .

[0034] The method of discharging the air in the oil chamber 2 in this application is as follows: open the brake oil passage 3 and the auxiliary oil passage 4 to make the upper and lower oil ports of the oil chamber 2 communicate with the outside world, inject hydraulic oil into the oil chamber 2 through the auxiliary oil passage 4, and then As the liquid level rises, the air inside the oil chamber 2 is discharged from the brake oil passage 3 until hydraulic oil is discharged from the brake oil passage 3.

Embodiment 2

[0036] The wet parking brake provided in the second embodiment is a further improvement on the wet parking brake provided in the first embodiment. figure 1 On the basis of the above, the wet parking brake provided in the second embodiment includes a brake body 1, the brake body 1 is provided with a brake oil passage 3 communicating with the oil chamber 2, and the brake body 1 is also provided with a The auxiliary oil passage 4 communicated with the oil chamber 2 .

[0037] The method of discharging the air in the oil chamber 2 in this application is as follows: open the brake oil passage 3 and the auxiliary oil passage 4 to make the upper and lower oil ports of the oil chamber 2 communicate with the outside world, inject hydraulic oil into the oil chamber 2 through the auxiliary oil passage 4, and then As the liquid level rises, the air inside the oil chamber 2 is discharged from the brake oil passage 3 until hydraulic oil is discharged from the brake oil passage 3.

[0038] ...

Embodiment 3

[0040] The wet parking brake provided in the third part of this embodiment is a further improvement on the wet parking brake provided in the first embodiment. figure 1 On the basis of the above, the wet parking brake provided in the third embodiment includes a brake body 1, the brake body 1 is provided with a brake oil passage 3 communicating with the oil chamber 2, and the brake body 1 is also provided with a The auxiliary oil passage 4 communicated with the oil chamber 2 .

[0041] The method of discharging the air in the oil chamber 2 in this application is as follows: open the brake oil passage 3 and the auxiliary oil passage 4 to make the upper and lower oil ports of the oil chamber 2 communicate with the outside world, inject hydraulic oil into the oil chamber 2 through the auxiliary oil passage 4, and then As the liquid level rises, the air inside the oil chamber 2 is discharged from the brake oil passage 3 until hydraulic oil is discharged from the brake oil passage 3....

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Abstract

The invention discloses a wet-type parking brake. The wet-type parking brake comprises a brake body, a braking oil way communicating with an oil cavity is arranged in the brake body, and the brake body is further internally provided with an auxiliary oil way communicating with the oil cavity. According to the wet-type parking brake, on the one hand, a series of problems brought by cavitation erosion caused by air are solved, on the other hand, the response time of the brake is shortened, the situation that a friction plate is abraded due to the fact that delaying is started is avoided, and thehydraulic control difficulty is lowered. On the basis, the invention further provides engineering machinery.

Description

technical field [0001] The invention relates to a brake, in particular to a wet parking brake and construction machinery. Background technique [0002] In construction machinery, the reducer is a key transmission component, which mainly realizes deceleration, torque increase and braking. The brake is the part that realizes the braking of the reducer, and most of them are normally closed structures of friction plate wet braking. [0003] This structure relies on the restoring force of the spring group to press the friction plate group to achieve braking. When it needs to be opened, a certain pressure of hydraulic oil is passed through the hydraulic pump to the brake chamber to push the piston to compress the spring. At this time, the pressure of the friction plate is released to realize the opening of the brake. , The brake has a compact structure and simple assembly, and is widely used in transmission equipment with braking requirements such as construction machinery walking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/16F16D121/04F16D125/02
CPCF16D65/16F16D2125/02F16D2121/04
Inventor 肖军宝贾广利赵慧
Owner SUOTE TRANSMISSION EQUIP
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