Wet multi-disc parking brake

A parking brake and brake technology, which is applied to hydraulic brakes, brake actuators, etc., can solve the problems of cumbersome replacement and maintenance of friction plates, difficulty in entering oil between friction pairs, wear of friction plates, etc. The effect of preventing dry friction and improving braking torque

Inactive Publication Date: 2014-07-09
CRRC QISHUYAN INSTITUTE CO LTD
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the replacement and maintenance of the friction plate are relatively cumbersome.
[0004] Chinese Invention Patent CN201210109599.3 and Chinese Utility Model Patent CN2

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wet multi-disc parking brake
  • Wet multi-disc parking brake
  • Wet multi-disc parking brake

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Such as figure 1 , 2 3, the wet multi-disc parking brake of the present invention includes a brake cover 1, a brake housing 2, a piston 3, a friction pair 4, a spring 5, a spline shaft 6 and a seal 7.

[0028] The brake cover 1 and the brake housing 2 are fixedly connected to form a brake box. The piston cylinder enclosed by the brake cover 1 and the brake housing 2 is equipped with a piston 3 that can move left and right.

[0029] The piston cylinder includes a first cylinder hole 11 with a larger diameter and a second cylinder hole 12 with a smaller diameter. The piston 3 has a first sliding surface 3-1 with a larger diameter and a second sliding surface with a smaller diameter. 3-2, the first sliding surface 3-1 of the piston 3 slidingly fits with the hole wall of the first cylinder hole 11, and the second sliding surface 3-2 sliding fits with the hole wall of the second cylinder hole 12,

[0030] The brake cover 1 has a plurality of spring mounting holes 1-1, and springs ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a wet multi-disc parking brake which comprises a brake cover, a brake shell, a piston, a friction pair, a spring, a spline shaft, a sealing element and a retainer ring. The piston is mounted in a piston cylinder encircled by the brake cover and the brake shell, the piston cylinder comprises a first cylinder hole with a large diameter and a second cylinder hole with a small diameter, the piston is provided with a first sliding surface with a large diameter and a second sliding surface with a small diameter, the first sliding surface is in slide fit with the wall of the first cylinder hole, the second sliding surface is in slide fit with the wall of the second cylinder hole, the spring on the brake cover is butted to the back of the piston, the friction pair comprises friction discs and dual discs, is arranged on the outer periphery of the spline shaft and is positioned on a side of the front surface of the piston, the friction discs and the dual discs are axially alternately arranged, the brake shell is meshed with the friction discs via internal spline, the dual discs are meshed with the spline shaft via internal splines, and a high-pressure oil circuit and a lubricating oil circuit are arranged in a tank. The wet multi-disc parking brake has the advantages that the wet multi-disc parking brake is small in radial size, and dry friction among the friction discs and the dual discs can be prevented.

Description

technical field [0001] The invention relates to a brake, in particular to a wet multi-disc parking brake for off-highway mining dump trucks. Background technique [0002] With the gradual development of the mining industry, large-scale and heavy-duty mining dump trucks are the main development trend at present. The current mainstream configuration mostly uses wet service brakes and dry parking brakes. However, the dry parking brake is greatly affected by the environment, and muddy water and oil will directly affect the stability and service life of the dry brake's braking performance. Moreover, the replacement and maintenance of the friction plate are relatively complicated. And as the tonnage of the vehicle increases, the braking torque is often achieved by increasing the radial size of the brake disc or increasing the number of brakes. The former is often limited by the installation space, while the latter increases the cost. [0003] Dry parking brakes are greatly affe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F16D65/14F16D55/32
Inventor 陈学伟张勋林王阳齐斐斐
Owner CRRC QISHUYAN INSTITUTE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap