Pressure balancing device, hydro-pneumatic suspension automatic leveling system and engineering vehicle

A balancing device and oil-pneumatic suspension technology, which is applied in fluid pressure actuating devices, vehicle components, suspensions, etc., can solve the problems of reducing the life of the axle, twisting and deforming the frame, cracking of the weld seam, and reducing tire wear Larger, reduce frame deformation, and prolong service life

Active Publication Date: 2013-07-17
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, the load difference between the left and right is very large, which will cause the frame to twist and deform, or even crack the weld seam; and due to the large difference between the left and right loads, it will cause damage to the axle when the vehicle is driving at high speed, or reduce the axle. At the same time, it will cause a large difference in the compression of the left and right tires, which will aggravate the wear of the tires, and even cause a blowout in severe cases.

Method used

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  • Pressure balancing device, hydro-pneumatic suspension automatic leveling system and engineering vehicle
  • Pressure balancing device, hydro-pneumatic suspension automatic leveling system and engineering vehicle
  • Pressure balancing device, hydro-pneumatic suspension automatic leveling system and engineering vehicle

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Embodiment Construction

[0023] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0024] Such as figure 2 As shown, according to the first embodiment of the present invention, the pressure balance device 10 includes an on-off valve and a pressure-stabilizing circuit, and the pressure-stabilizing circuit is connected in series with the on-off valve to control the pressure difference at both ends of the pressure-stabilizing circuit within a predetermined range. The on-off valve is connected in series with the voltage stabilizing circuit, and the on-off valve can be opened when the voltage stabilizing circuit is needed to make the voltage stabilizing circuit work normally; The on-off valve cooperates with the pressure stabilizing circuit, which can play a good regulating role, so t...

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Abstract

The invention provides a pressure balancing device, a hydro-pneumatic suspension automatic leveling system and an engineering vehicle. The pressure balancing device comprises a switch valve and a pressure stabilizing circuit which is in series connection with the switch valve to control pressure differences of two terminals of the pressure stabilizing circuit within a preset range. The pressure balancing device has the advantages of being capable of effectively keeping balance of a vehicle and prolonging the service life of axles.

Description

technical field [0001] The invention relates to an engineering vehicle balance adjustment system, in particular to a pressure balance device, an oil-gas suspension automatic leveling system and an engineering vehicle. Background technique [0002] At present, more and more heavy-duty engineering vehicles adopt the oil-air suspension system. The oil-air suspension is mainly composed of a flexible hydraulic component accumulator, a suspension cylinder and a control valve for controlling the attitude adjustment of the oil-air suspension. It has superior nonlinear elastic characteristics and good performance. Vibration damping performance can meet the ride comfort requirements of engineering vehicles to the greatest extent. Generally, the oil-pneumatic suspension system has an automatic leveling function, which extends the suspension cylinder of the vehicle to the same length before driving to maintain the vehicle's posture balance. [0003] The oil-pneumatic suspension system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/04F15B11/16
Inventor 郭堃
Owner ZOOMLION HEAVY IND CO LTD
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