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Two-stage and three-stage spot brake master valve with retarder

A technology of brake master valve and spot brake, which is applied in the directions of brakes, brake components, control valves and air release valves, etc., can solve the problems of high precision and size requirements of spring ferrules, different test performances, and complicated processing technology. Achieve the effect of improving braking effect, reducing processing difficulty, and simple processing process

Inactive Publication Date: 2016-08-17
CHANGTONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key component in the above patent is the spring ferrule. Due to the special shape of the spring ferrule and the complicated processing technology, it needs to be finished on a lathe after casting, and the cost is relatively high.
The precision dimension of the spring ferrule has high requirements, and the defective rate is very high after inspection.
In addition, due to the poor compatibility of various components, there is also the problem of complex installation process, and the test performance after installation is different, and the regularity is poor, which needs to be improved

Method used

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  • Two-stage and three-stage spot brake master valve with retarder
  • Two-stage and three-stage spot brake master valve with retarder
  • Two-stage and three-stage spot brake master valve with retarder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A two-stage point braking master valve with a retarder, see figure 1 and figure 2 , from top to bottom sequentially includes the pedal seat 28, the upper body 24, the middle body 13 and the lower body 8 etc. which are sealed and fixed together.

[0024] Wherein, the upper part of the pedal base 28 extends upwards into a tube shape, and a sliding sleeve 30 is sleeved in the center of the pedal base 28 , and a dustproof cover 31 is clamped between the sliding sleeve 30 and the pedal base 28 .

[0025] The pedal 44 is hinged on one side of the pedal seat 28 through the pin shaft 46 , and the pedal 44 is provided with a pin shaft 50 and a flat washer 51 which are pressed together with the upper end of the sliding sleeve 30 .

[0026] The upper end of the inner chamber of the sliding sleeve 30 is sealed and pressed against the upper end of the tappet 29 , and the lower end of the tappet 29 is pressed against the bottom of the central concave hole of the tappe...

Embodiment 2

[0037] Embodiment 2: A three-stage point braking master valve with a retarder, the content is basically the same as that of Embodiment 1, the difference is: see Figure 11 , replace the two-stage point brake balance piston assembly with the three-stage point brake balance piston assembly. see Figure 12 , the three-stage point brake balance piston assembly includes a balance piston 37, a spring ferrule 40, a tappet seat 38, the top of the balance piston 37 is a cylindrical disc chamber A, and the bottom of the balance piston 37 protrudes from the space The cavity-shaped protrusion is the rod body chamber B; the upper part of the tappet seat 38 is a disc, and the lower part is a three-stage step rod body that protrudes from the disc 3801, and the first rod body is sequentially from top to bottom. 3803, the second rod body 3804, the third rod body 3805, the lower section of the third rod body 3805 is inserted into the rod body chamber B at the bottom of the balance piston 37, a...

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Abstract

The invention discloses a second level and third level inching brake master valve for an ALL-WIN series belt retarder. The second level and third level inching brake master valve for the ALL-WIN series belt retarder comprises a pedal seat, an upper body, a middle body and a lower body, which are fixed together in sealing mode, wherein a balance piston sleeves the upper portion of an inner cavity of the upper body, a first level balance spring sleeves the exterior of a spring clamp sleeve, a second level balance spring is inserted into the spring clamp sleeve, the distance from the upper end of the second level balance spring to a stepped surface at the lower end of a first rod body is L1, the distance from a stepped surface at the lower end of the second level balance spring to the upper end face of a chamber of the rod body is L3, the distance from the upper end face of the spring clamp sleeve to the lower surface of a hub disc is L2, and the distance L1, the distance L3 and the distance L2 meet the relationship that L1 is less than L3 and L3 is less than L2. The second level and third level inching brake master valve for the ALL-WIN series belt retarder is of a structure with an annular inward flange on the upper portion and an annular outward flange on the lower portion, simplifies structure of the spring clamp sleeve, reduces processing difficulty and assembly difficulty, and can substantially improve qualified rate of products. The spring clamp sleeve can be directly shaped through cutting machining, and can be shaped once through a stamping technology, and the machining process is simple. The second level and third level inching brake master valve for the ALL-WIN series belt retarder can improve brake effects of the ALL-WIN series belt retarder, can regulate brake speed, and achieves the good brake effects for the ALL-WIN series belt retarder by adopting the above inching brake structure.

Description

technical field [0001] The invention relates to the technical field of parts of automobile brake valves, in particular to a two-stage and three-stage spot brake master valve with a retarder. Background technique [0002] The braking system of trucks and heavy-duty vehicles in the prior art brakes too quickly, and the foot feel is not easy to control, which will easily cause the brake pads to heat up rapidly, resulting in carbonization, which directly affects the braking effect. bias, affecting the overall stability, resulting in insecurity, or unnecessary economic losses. In order to solve these braking problems of trucks, our unit has successively proposed a series of patents on the two-stage brake master valve and the three-stage balance piston assembly, such as the invention patent with the publication number CN 101837774 A, which can output "secondary point brake". The principle of "point brake" can make the compressed air form pulses in the control pipe section and ai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T15/06
CPCB60T15/041
Inventor 田青锋
Owner CHANGTONG TECH