Delong series two-stage and three-stage point brake master valve with strainer

A brake master valve, series of technologies, applied in the direction of brakes, brake components, control valves and air release valves, can solve the problems of affecting valve core sealing, high cost, poor coordination, etc., to improve work reliability, avoid The effect of reducing braking accident and processing difficulty

Inactive Publication Date: 2017-01-11
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
[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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  • Delong series two-stage and three-stage point brake master valve with strainer
  • Delong series two-stage and three-stage point brake master valve with strainer
  • Delong series two-stage and three-stage point brake master valve with strainer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: A Delong series secondary point brake structure with filter, see figure 1 with figure 2 , From top to bottom, it includes an upper body 24 and a lower body 8 which are sealed and fixed together.

[0029] The upper part of the upper body has a tubular structure. The upper inner cavity of the upper body 24 is fitted with a balance piston 37. The upper inner cavity of the upper body 24 is also provided with a stop ring 27 to prevent the balance piston from being ejected. The upper outer side of the upper body 24 The matching suit is provided with a dust cover 31, the outer side of the dust cover 31 is fitted with the clamp 1 and then fixed on the outer side of the upper body 24, the dust cover 31 is provided with a central hole and a linkage groove 23 is provided at the position of the central hole.

[0030] The pedal is hinged to the upper body or one side of the pedal seat through a pin shaft, and a pin shaft and a flat washer that are matched and compressed with t...

Embodiment 2

[0044] Embodiment 2: A Delong series three-stage point brake structure with filter screen, the content is basically the same as that of Embodiment 1, the difference is: see Picture 9 , Replace the two-stage spot brake balance piston assembly with a three-stage spot brake balance piston assembly. See Picture 10 The three-stage point brake balance piston assembly includes a balance piston 37, a spring sleeve 40, and a tappet seat 38. The upper part of the balance piston 37 is a cylindrical web chamber A, and the lower part of the balance piston 37 extends The cavity-shaped protrusion is the rod body chamber B; the upper part of the tappet seat 38 is the web plate, and the lower part is the three-stage stepped rod body extending from the web plate 3801, and the first rod body is successively tapered 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 chamber B at the lower part of the b...

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PUM

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Abstract

The invention discloses a Delong-series secondary and third snub brake master valve with a filter mesh. The Delong-series secondary and third snub brake master valve with the filter mesh comprises a pedal seat, an upper body, a middle body and a lower body which are fixed together in a sealing manner; a balance piston is arranged at the upper part of the inner cavity of the upper body in a sleeving manner; a primary balance spring is arranged out of a spring clamping sleeve in the sleeving manner; a secondary balance spring is arranged in the spring clamping sleeve in the sleeving manner. An upper valve seat is clamped and fixed to the inner side of the wall of an upper valve through an elastic baffle ring; a lower valve seat is clamped and fixed to the inner side of the wall of a lower valve through an elastic baffle ring. According to the Delong-series secondary and third snub brake master valve with the filter mesh, the structure with an annular inner flange on the upper part and an annular outer flange on the lower part is adopted, so that the structure of the spring clamping sleeve is simplified; the machining difficulty and the assembling difficulty are reduced; the pass rate of products can be greatly improved. The filter mesh of a valve core of a brake valve disclosed by the invention is simple in structure and convenient to mount, and can be mounted in the outer part of the valve core of the brake valve, particularly the brake master valve; the filter mesh is directly arranged on the periphery of the valve core, so that solid shells carried in a gas can be prevented from entering the valve core; therefore, the work reliability of the valve core is greatly improved, and brake accidents are avoided.

Description

Technical field [0001] The invention relates to the technical field of parts and components of automobile brake valves, in particular to a Delong series of secondary and tertiary point brake master valves with filter screens. Background technique [0002] The brake systems of trucks and heavy vehicles in the prior art brake too fast, and the foot feel is not well controlled, which easily causes the brake pads to heat up rapidly, resulting in carbonization, which directly affects the braking effect, and the braking is too fast and can cause slippage. The deviation affects 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 for the secondary point brake structure and the three-level balanced piston assembly, such as the invention patent with publication number CN 101837774 A, which can output "secondary point brake" ". The principle of "spot brake"...

Claims

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Application Information

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