Mobile engineering machine and control system of support leg thereof

Abstract

The invention discloses a mobile engineering machine and a control system of a support leg thereof. The control system of the support leg of the mobile engineering machine comprises a controller, a horizontal detection device and multiple hydraulic control devices, wherein the horizontal detection device acquires an inclination angle of the mobile engineering machine; multiple support leg oil cylinders are connected with a main hydraulic source through one hydraulic control device respectively; and the controller controls the hydraulic control devices according to the inclination angle of themobile engineering machine. The controller can determine the state of the mobile engineering machine and can enable the support leg oil cylinders to stretch / retract synchronously and enable some of the support leg oil cylinders to stretch or retract so as to perform leveling operation. By using the control system, dependence on the personal experience and field observation and judgment ability ofoperators can be get rid of, and the state transition of the mobile engineering machine can be implemented while the safety of the mobile engineering machine is ensured, thus the control operation efficiency can be greatly improved.

Description

technical field [0001] The invention relates to a control technology for a mobile construction machine leg, in particular to a control system for a mobile construction machine leg, and also to a mobile construction machine including the control system. Background technique [0002] In order to facilitate the transition and meet the needs of construction operations, mobile construction machinery such as concrete pump trucks and lifting vehicles have an appropriate driving mechanism and multiple retractable legs arranged around the main body of the construction machinery; The control of the leg state can make the mobile construction machinery switch between the driving state and the construction state. In the driving state, each outrigger is retracted, and the mobile construction machine can run on the road through the driving mechanism, so as to realize the smooth transition of the mobile construction machine; in the construction state, the outriggers are stretched out and su...

AI Technical Summary

Problems solved by technology

[0005] Limited by the structure of the outriggers, the existing control operation method is highly dependent on the operator's personal experience and on-site observation and judgment ability; when the operator's personal experience and on-site observation and judgment ability are insufficient, mobile construction machinery is easy to produce The risk of overturning may even cause the mobile construction machinery to overturn; at the same time, the length of each leg is manually adjusted repeatedly, which also makes the control operation process very cumbersome and complicated, reducing the control operation efficiency of the state transition of the mobile construction machinery

[0006] In addition, based on the outrigger structure, the operator cannot accurately balance the supporting force provided by each outrigger when performing control operations in the existing control operation mode, and then, after the control operation is completed, it is easy for one or two outriggers to If the supporting force is too small or does not provide supporting force, one or two outriggers are empty legs, resulting in the inability of the outriggers to provide the expected supporting force for the mobile construction machinery, which will affect the stability and stability of the construction work of the mobile construction machinery. reliability

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