Secondary and third snub braking main valve provided with filter screen and retarder and used for Aowei series

A technology of brake master valve and retarder, which is applied in the direction of brakes, brake components, control valves and air release valves, etc. It can solve the problems of gas pollution, solid particles entering, and affecting the sealing of valve cores, etc.

Inactive Publication Date: 2015-03-04
CHANGTONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are generally filters in the pipeline of the braking system, which are used to filter the solid particle impurities flowing with the gas in the air pipe, so as to ensure that each braking component is not affected by solid particle impurities and ensure the reliability of its work. However, due to the distance between the filter and the spool of each valve, it cannot be avoided that the filtered gas will be polluted by other newly generated solid particles before entering the spool. Sometimes solid particles will still enter the spool and affect the spool. The airtightness caused by air leakage accidents, a new solution needs to be put forward

Method used

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  • Secondary and third snub braking main valve provided with filter screen and retarder and used for Aowei series
  • Secondary and third snub braking main valve provided with filter screen and retarder and used for Aowei series
  • Secondary and third snub braking main valve provided with filter screen and retarder and used for Aowei series

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: A two-stage point brake master valve with filter screen and retarder for Aowei series, 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.

[0032] 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 .

[0033] 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 .

[0034] 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 ce...

Embodiment 2

[0048] Embodiment 2: A three-stage point brake main valve with filter screen and retarder for Aowei series, 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 lower...

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Abstract

The invention discloses a secondary and third snub braking main valve provided with a filter screen and a retarder and used for an Aowei series. The braking main valve comprises a pedal base, an upper body, a middle body and a lower body hermetically fixed as a whole, wherein a secondary balance spring disposed inside; the distance from the upper end of the secondary balance spring to a step surface of the lower end of a first rod body is L1; the distance from a step surface at the lower end of a second rod body to the upper end surface of a rod body cavity is L3; the distance from the upper end surface of a spring sleeve to the lower surface of a disc is L2; and the L3 is greater than L1 and less than L2. An upper valve base is clamped and fixed at the inner side of an upper valve wall through an elastic retainer ring; and a lower valve base is clamped and fixed at the inner side of a lower valve wall through an elastic retainer ring. The filter screen of a valve core of the braking valve is simple in structure, is convenient to mount, and can be directly mounted in the braking valve, in particular outside the valve core of the braking main valve; and the filter screen is directly arranged around the valve core for preventing solid particles carried in gas from entering the valve core, so that the working reliability of the valve core is largely improved, and braking accidents are prevented.

Description

technical field [0001] The invention relates to the technical field of parts and components of automobile brake valves, in particular to a secondary and tertiary point braking master valve for Aowei series with filter screen and 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 ai...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B60T15/06
CPCB60T15/04
Inventor田青锋
OwnerCHANGTONG TECH