Wheel type crane and steering hydraulic control system thereof

A technology for steering cylinders and wheels, applied in automatic steering control components, steering mechanisms, steering rods, etc., can solve the problems of limited application scope and high manufacturing costs, and achieve the effects of expanding the scope of application, reducing manufacturing costs, and reducing volume

Active Publication Date: 2013-11-27
XUZHOU HEAVY MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above defects, the core purpose of the present invention is to provide a steering hydraulic control system to solve the problems of high manufacturing cost and limited scope of application of the existing hydraulic steering system

Method used

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  • Wheel type crane and steering hydraulic control system thereof
  • Wheel type crane and steering hydraulic control system thereof
  • Wheel type crane and steering hydraulic control system thereof

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Embodiment Construction

[0038] The core of the present invention is to provide a steering hydraulic control system for vehicles, which reduces the cost of the steering hydraulic control system by using a quantitative pump and a control valve group that can unload the constant drive quantitative pump when the steering cylinder is locked. , expanding its scope of application. On this basis, the present invention also provides a wheeled crane including a steering hydraulic control system.

[0039] Without loss of generality, the specific embodiment of the hydraulic control steering system provided by the present invention will be described by taking steering control of a wheeled crane as an example in conjunction with the accompanying drawings. It can be understood that the hydraulic control steering system in this solution can also be used in other vehicles using steering hydraulic control systems. It should be noted that the present invention only optimizes the design of the rear group steering hydra...

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Abstract

The invention discloses a steering hydraulic control system. The steering hydraulic control system comprises a front-group wheel steering hydraulic control system and a back-group wheel steering hydraulic control system, wherein the back-group wheel steering hydraulic control system comprises a constant delivery pump, a steering oil cylinder and a first control valve and a second control valve which are arranged between a hydraulic pump and a system return oil way in parallel; the first control valve is used for controlling oil supply of the steering oil cylinder; the second control valve is used for controlling pressure buildup and unloading of the oil way of the steering oil cylinder according to the working condition of the first control valve. The constant delivery pump is taken as a power source, the steering oil cylinder drives back-group wheels to steer by controlling the first control valve and the second valve; and moreover, a locking oil cylinder and a control unit of the locking oil cylinder are further omitted. Obviously, compared with the prior art, the steering hydraulic control system has the advantages that the manufacturing cost and volume are obviously reduced, so that the integral manufacturing costs of the steering hydraulic control system is reduced, and the application range of the steering hydraulic control system is widened. On the basis of the advantages of the steering hydraulic control system, the invention further discloses a wheel type crane comprising the steering hydraulic control system.

Description

technical field [0001] The invention relates to the technical field of wheeled cranes, in particular to a wheeled crane and its steering hydraulic control system. Background technique [0002] At present, engineering vehicles use multi-mode steering functions to cope with normal driving on complex road conditions. Combine now figure 1 To introduce the four steering modes commonly used in engineering vehicles, including independent steering of the front group A, independent steering of the rear group B, small turn steering C and crab steering D; among them, the steering direction of the front group of wheels and the rear group of wheels when turning to C in a small turn On the contrary, in order to achieve the smallest turning radius, when the crab turns to D, the front wheels and the rear wheels turn in the same direction, so it gets its name because it looks like a crab walking. [0003] The aforementioned four steering modes are controlled by the steering hydraulic contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/06B62D6/00B62D113/00
Inventor 叶海翔刘威张付义
Owner XUZHOU HEAVY MASCH CO LTD
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