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Relay valve for steering axle of towing vehicle

A technology for steering axles and tractors, applied in the direction of brakes, brake components, vehicle components, etc., can solve problems such as excessive braking force and shortened braking distance, achieve balanced braking force, shorten braking distance, and improve driving safety The effect of the coefficient

Inactive Publication Date: 2014-08-06
山东康健汽车科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] After the tractor adopts the relay valve for the tractor steering axle of the present invention, the front steering axle is braked first, and the problems such as excessive braking force are solved, the brake of the front steering axle is adjusted normally, and the output brake air pressure It can be adjusted between 0.10 and 0.80 MPa, so that the brake of the front steering axle can not only generate braking force, but also effectively brake the turning and sideslip; shorten the braking distance of the whole vehicle by more than 10%, and the braking force is balanced. Fast deceleration, improving driving safety factor and reducing accidents

Method used

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  • Relay valve for steering axle of towing vehicle
  • Relay valve for steering axle of towing vehicle
  • Relay valve for steering axle of towing vehicle

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Embodiment Construction

[0016] Such as figure 1 and figure 2 As shown, the lower casing 4 and the upper casing 5 of the relay valve of the steering axle of the tractor are screwed to form a valve chamber, and the main valve stem 101 is placed in the valve chamber; the lower end surface of the main valve stem 101 is placed in the lower The air valve assembly 11 at the lower part of the housing 4 is in contact; the air valve assembly 11 includes a main valve 111, a valve spring 112, valve retaining rings 113 and 114, a sealing ring 115, and a valve retainer 116; the main valve diaphragm assembly 10 It is set on the main valve stem 101 and press-fitted between the lower housing 4 and the upper housing 5 . The booster piston 120 is fixedly sleeved on the upper part of the main valve stem 101 , and may also be integrally constructed with the main valve stem 101 . In order to increase the sealing performance, a sealing ring 104 is installed on the inner and outer walls of the booster piston 120; the boo...

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Abstract

The invention relates to a relay valve for a steering axle of a towing vehicle. The relay valve comprises a main valve, wherein the main valve comprises an upper casing, a lower casing, a main valve rod, a main valve membrane assembly and an air valve assembly. A boosting piston is arranged at the upper portion of the main valve rod, and three working chambers allowing pressure regulation air to flow through are formed in the upper casing. Corresponding to the structure, a control valve of a towed vehicle comprises a pressure stabilizing and regulating device and a boosting device. When the relay valve is arranged on the towing vehicle, normal regulation is performed on brake of the front steering axle, the output brake pressure is adjustable within the range from 0.10MPa to 0.80MPa, therefore, when the front steering axle performs brake, brake force is generated, and effective brake is performed on back slide. The brake distance of the whole vehicle is shortened by more than ten percent, the brake force is balanced, the vehicle slows down quickly, the traffic safety factor is increased, and accidents are reduced.

Description

technical field [0001] The invention relates to the technical field of automobile braking, in particular to a relay valve for a steering axle of a tractor. Background technique [0002] In my country, the transport volume of semi-trailer tractors accounts for more than 70% of the total long-distance transport. In the braking system of the semi-trailer tractor, due to the short distance between the front steering axle and the brake master cylinder, the reaction speed during braking is fast, causing the front steering axle to brake first, and the braking force is too large. When braking with no load, the air pressure of the front steering axle reaches 0.25 MPa, and the front steering axle of a general vehicle can reach the dead state; when braking with heavy load, the air supply pressure reaches 0.38 due to the small weight of the cargo allocated to the front steering axle. MPa, the front steering axle will reach the dead state. Even if the ABS system is installed, because t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T15/18
Inventor 李欣康大为康亚君柏兰英张丰森
Owner 山东康健汽车科技股份有限公司
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