Engineering machine and controlling method and controlling system for engineering machine

A technology of construction machinery and control methods, which is applied to the control of use feedback, the processing of building materials, construction, etc., can solve the problems of fast and slow deployment or retraction, poor coordination of booms, and poor working stability of engineering vehicles, etc., to achieve saving Transformation cost, easy to implement, simple to achieve effect

Active Publication Date: 2012-07-11
SANY AUTOMOBILE MFG CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In the prior art, the multi-way control valve controls the movement of the driving cylinders of each section of the boom to approach a uniform speed. However, when the driving cylinders move at a uniform speed, the boom its

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  • Engineering machine and controlling method and controlling system for engineering machine
  • Engineering machine and controlling method and controlling system for engineering machine
  • Engineering machine and controlling method and controlling system for engineering machine

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the control method, control system and drawings of construction machinery. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention.

[0034] Without loss of generality, this article takes the application of the technical solution on concrete pump trucks as an example to introduce. Those skilled in the art should understand that this technical solution is not limited to concrete pump trucks, and its application to other construction machinery is also within the protection scope of this article Inside.

[0035] During the working process of the concrete pump truck, when the boom cylinder is extended or retracted at a uniform speed, the angular velocity of the boom controlled by it to rotate around the hinge axis is a non-uniform motion. Such as figure 1 as shown, figure 1 When the boom oil cylinder p...

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Abstract

The invention discloses an engineering machine and a controlling method and a controlling system for the engineering machine. The engineering machine comprises n sections of arm supports sequentially hinged through hinged shafts. The controlling method comprises the following steps of: detecting the angle parameter of each arm support in the current state or the state parameter of an arm support cylinder for driving the arm supports to move at the current moment; sending a control instruction according to the angle parameters in the current state or the state parameter of the arm support cylinder at the current moment and a preset control strategy; and controlling hydraulic oil flow of the arm support cylinder according to the control instruction, so that each arm support uniformly rotates around the corresponding hinged shaft. By the controlling method, the hydraulic oil flow of the cylinder for driving the arm supports to move can be adjusted in real time, and uniform rotation of the arm supports is realized; the controlling method is relatively high in control precision and easy to implement; and a hydraulic element is not required to be added, and the control program can be directly improved in the conventional hydraulic system, so that the reformation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of construction machinery control, in particular to a control method for construction machinery. In addition, the present invention also relates to a control system and a construction machine including the above control method. Background technique [0002] Construction machinery is mainly used for concrete pumping and elevating fire protection. Among them, concrete pump truck is a typical construction machinery, which mainly uses pumping power to transport concrete to designated locations along the delivery pipeline. [0003] The conveying pipeline is generally set on the foldable boom device, which has the actions of unfolding, folding and rotating. The boom device includes several section arms and boom oil cylinders and connecting rods arranged between two adjacent boom sections. , hinged shaft, etc. Each two-section boom and its connecting rod constitute a four-bar mechanism, which is driven by a hydra...

Claims

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Application Information

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IPC IPC(8): G05D3/12E04G21/04
CPCE04G21/02E04G21/0463
Inventor 李建涛肖俏伟吴建华
Owner SANY AUTOMOBILE MFG CO LTD
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