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Walking hydraulic control system and self-walking type engineering machinery utilizing same

A hydraulic control system, right-hand walking technology, applied in the direction of control devices, mechanical equipment, fluid pressure actuators, etc., can solve the problems of asynchronous drive of travel motors, uneven friction, aggravated wheels, etc., to improve speed synchronization, Avoid out-of-synchronization drive and improve the effect of adaptability

Active Publication Date: 2012-07-18
XCMG FIRE FIGHTING SAFETY EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difference in eccentric load and adhesion conditions during the walking process of the aerial work platform is likely to cause asynchronous driving of the walking motors, aggravate the uneven friction of the wheels, and then affect their service life

Method used

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  • Walking hydraulic control system and self-walking type engineering machinery utilizing same
  • Walking hydraulic control system and self-walking type engineering machinery utilizing same
  • Walking hydraulic control system and self-walking type engineering machinery utilizing same

Examples

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Embodiment Construction

[0031] The core of the present invention is to provide a walking hydraulic control system, which can effectively control the speed synchronization of the traveling motors on both sides by changing the system configuration. The present embodiment will be described in detail below in conjunction with the accompanying drawings.

[0032] Without loss of generality, this embodiment will be described in detail with the aerial work platform as the main body.

[0033] See figure 2 , which shows a schematic diagram of the overall structure of the aerial work platform vehicle.

[0034] As shown in the figure, the main functional parts of the aerial work platform vehicle, such as the various functional components on the vehicle and the walking chassis for getting off the vehicle, can be realized in the same way as the existing technology; Walking operations such as forward, backward or turning of the vehicle. It should be noted that those skilled in the art can implement the above-me...

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Abstract

The invention discloses a walking hydraulic control system comprising a reversible pump, a first left walking motor and a first right walking motor; the walking hydraulic control system further comprises a first flow split and flow collection valve, wherein a confluence oil opening of the first flow split and flow collection valve is communicated with a first working oil opening of the reversible pump, and two flow split oil openings of the first flow split and flow collection valve are respectively communicated with first working oil openings of the first left walking motor and the first right walking motor; and second working oil openings of the first left walking motor and the first right walking motor are communicated with a second working oil opening of the reversible pump. Compared with the prior art, the walking hydraulic control system is provided with the first flow split and flow collection valve to realize the equivalent flow split and equivalent flow collection of the walking motors on the left and right sides so as to improve the speed synchronism of the walking hydraulic motors and provide reliable guarantee for controlling the non-uniform friction of wheels. On the basis, the invention further provides self-walking type engineering machinery provided with the walking hydraulic control system.

Description

technical field [0001] The invention relates to engineering machinery hydraulic control technology, in particular to a walking hydraulic control system and self-propelled engineering machinery using the control system. Background technique [0002] With the rapid development of my country's infrastructure construction, the demand and inventory of construction machinery are also growing rapidly. The requirements are also getting higher and higher. [0003] Among many self-propelled construction machinery, the walking system is one of its important components. Compared with the working system, the walking system not only needs to transmit more power, but also requires higher efficiency and longer life; at the same time, it needs to change the speed, differential speed, change the rotation direction of the output shaft and reverse the power transmission, etc. have good capabilities. [0004] There are mainly two types of walking systems for existing construction machinery: on...

Claims

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Application Information

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IPC IPC(8): B60K17/10F15B11/16
Inventor 孔德美韩记生
Owner XCMG FIRE FIGHTING SAFETY EQUIP CO LTD
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