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A walking control device for engineering vehicles

A travel control and engineering vehicle technology, applied in control devices, vehicle components, fluid pressure actuation devices, etc., to solve problems such as increased motor flow, slippage, and reduced adhesion between wheels and road surfaces

Active Publication Date: 2021-05-14
徐州九阳机械制造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When engineering vehicles are driving on muddy or potholed roads, it is very easy to slip due to the small adhesion between the wheels and the road surface. When slipping occurs, the flow rate of the motor on the side where slipping occurs in the same hydraulic closed circuit will be greatly reduced. increase, the pressure in the hydraulic closed circuit cannot be established, which further reduces the adhesion between the non-slipping wheels and the road surface in the same hydraulic closed circuit, which brings trouble to the driver's driving

Method used

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  • A walking control device for engineering vehicles
  • A walking control device for engineering vehicles

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Such as Figure 1-2 Shown is a preferred embodiment of the present invention.

[0020] A walking control device for an engineering vehicle, comprising

[0021] The valve body 1 is provided with a valve body through hole extending axially through the valve body 1. The valve body through hole includes a first installation hole 102 and a second installation hole 101 from top to bottom. On the side wall of the valve body 1 An oil return port T, a first oil port A and a second oil port P communicated with the second mounting hole 101 are provided at intervals, and the lower opening of the second mounting hole 101 constitutes a control oil port X.

[0022] The screw plug 3 is fixedly connected to the lower end of the second installation hole 101, the screw plug 3 is provided with a screw plug through hole penetrating in the axial direction,...

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Abstract

The invention relates to a walking control device for engineering vehicles, comprising a valve body, on which a first oil port, a second oil port, an oil return port, a control oil port, a first installation hole and a second installation hole are arranged; Screw plug, fixedly connected to the lower end of the second installation hole; valve core, located in the second installation hole, can control the size of the communication area between the first oil port and the second oil port; spring; proportional relief valve, used to control Control chamber pressure; one-way valve. The traveling control device for engineering vehicles of the present invention has simple structure and compact volume, and can realize anti-slip and anti-cavitation for the traveling motors of engineering vehicles.

Description

technical field [0001] The invention belongs to the technical field of engineering vehicles, in particular to a walking control device for engineering vehicles. Background technique [0002] Engineering vehicles generally have a relatively large weight, and the road environment where they are driven is harsh. In order to meet the characteristics of large tonnage, large gradeability, and flexible steering of engineering vehicles, hydraulic travel is often used on medium and large engineering vehicles. Existing engineering vehicles mostly use closed hydraulic circuits for hydraulic travel. By changing the direction of the swash plate inside the closed pump in the closed hydraulic circuit and changing the direction of pump oil, the forward and backward switching of the vehicle can be realized. By changing the direction of the closed pump The angle of the internal swash plate changes the displacement of the pump so as to realize the adjustment of the vehicle’s walking speed. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/17F15B13/08F15B21/08F15B15/20B60K17/10
CPCB60K17/10F15B11/17F15B13/08F15B15/202F15B21/087F15B2211/20576F15B2211/255F15B2211/405F15B2211/426F15B2211/455
Inventor 韩国昊
Owner 徐州九阳机械制造有限公司
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