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Hydraulic steering system of semitrailer

A technology of steering hydraulics and hydraulic systems, applied in the field of hydraulic systems, can solve the problem that semi-trailers and tractors cannot perform synchronous steering, and achieve the effects of market promotion, convenient maintenance, and reasonable structure

Active Publication Date: 2016-05-04
HUBEI SANJIANG SPACE WANSHAN SPECIAL VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At this stage, most semi-trailers and tractors cannot perform synchronous steering, and cannot meet the transportation requirements of some ultra-long and ultra-wide cargoes that require a small turning radius

Method used

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  • Hydraulic steering system of semitrailer
  • Hydraulic steering system of semitrailer
  • Hydraulic steering system of semitrailer

Examples

Experimental program
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Embodiment Construction

[0030] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown, a semi-trailer steering hydraulic system 2 includes a gooseneck steering hydraulic system 1 , a power source hydraulic system 3 and a trailer steering hydraulic system 2 .

[0032] Such as figure 2As shown, the first oil cylinder 106, the second oil cylinder 107, the third oil cylinder 110 and the fourth oil cylinder 111 are all installed in the gooseneck turntable, and are arranged symmetrically with both sides of the centerline of the gooseneck turntable, and in the projection direction on the ground and the centerline The relative positions are the same, and the third oil cylinder 110 and the fourth oil cylinder 111 are arranged on the upper layer of the first oil cylinder 106 and the second oil cylinder 107 . During the entire process of turning the train to the left, the tractor first turns to the left. At this...

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PUM

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Abstract

The invention provides a hydraulic steering system of a semitrailer. The semitrailer using the hydraulic system can steer synchronously along with steering of a motor tractor, the steering radius of the whole tractor is greatly decreased, transportation requirements of off-gauge goods are met, and the using economical efficiency of clients is improved. According to the technical scheme, the hydraulic steering system comprises a gooseneck hydraulic steering system body, a power source hydraulic system body and a trailer hydraulic steering system body. The gooseneck hydraulic steering system body comprises a hydraulic oil tank, a steering multi-way valve, a three-position four-way electromagnetic directional valve, a first two-way one-way valve, a second two-way one-way valve, a first oil cylinder, a second oil cylinder, a third oil cylinder and a fourth oil cylinder. The trailer hydraulic steering system body comprises a steering integrated valve block, a steering integrated valve block, a fifth oil cylinder, a sixth oil cylinder, a seventh oil cylinder and an eighth oil cylinder, wherein the steering integrated valve block is provided with four-way ball valves. The power source hydraulic system body comprises an engine, a metering pump driven by the engine, and an oil suction filter.

Description

technical field [0001] The invention relates to the technical field of hydraulic systems, in particular to a steering hydraulic system of a semi-trailer. Background technique [0002] According to the connection method with the tractor, the trailer is mainly divided into two types: tow bar connection and gooseneck connection. The trailer connected to the tow bar is called a full trailer, and the trailer connected to the gooseneck is called a semi-trailer. [0003] The semi-trailer transfers part of the load of the trailer to the rear axle of the tractor through the gooseneck, which can improve the adhesion and driving force of the tractor, and shorten the total length of the car train, so it is used more frequently in the logistics transportation process. [0004] At this stage, most semi-trailers and tractors cannot perform synchronous steering, and cannot meet the transportation requirements of some ultra-long and ultra-wide cargoes that require a small turning radius. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/06
CPCB62D5/06
Inventor 万俊王力波王志国周华蓉曹军
Owner HUBEI SANJIANG SPACE WANSHAN SPECIAL VEHICLE