Method for solving composite action coordination of positive flow excavator

Abstract

The invention provides a method for solving composite action coordination of a positive flow excavator, which comprises the following steps of: adjusting the output displacement of a front pump and a rear pump of the positive flow excavator to form a linear proportional relationship with current signals which are output by a first pilot electric handle and a second pilot electric handle and are used for controlling a controlled object; and the displacement output by the front pump and the displacement output by the rear pump are matched with the flow requirements of hydraulic cylinders for driving the movable arm, the bucket and the bucket rod to act. The output displacement of the front pump and the output displacement of the rear pump are set to be one part of the maximum output displacement corresponding to the single action or the composite action, and a certain allowance is reserved; when another action is added or one action is reduced, and the flow demand of each hydraulic cylinder changes, the controller controls the front pump and the rear pump to output the reserved displacement allowance according to the magnitude of a current signal output by the pilot electric handle, and each hydraulic cylinder is driven to act, so that the increase and decrease of the action of the excavator are smoother, and the working efficiency is improved. Therefore, the problem of poor coordination of mechanism speed sudden change action caused by action increase and decrease of the positive flow excavator is effectively solved.

Description

technical field [0001] The invention relates to a method for solving the coordination of compound actions of a positive flow excavator, and belongs to the technical field of engineering machinery control. Background technique [0002] As a representative mechanical equipment in the field of construction machinery, positive flow excavators are widely used in the fields of civil construction and mining due to their strong adaptability to complex working conditions, high energy density and high work flexibility. [0003] like figure 1 , figure 2 As shown, the positive flow excavator includes a mechanical part and a hydraulic control part. The mechanical part mainly includes a bucket 1, a bucket hydraulic cylinder 2 that drives the action of the bucket, a stick 3, and a stick hydraulic cylinder 4 that drives the action of the stick. Arm 5, boom hydraulic cylinder 6 for driving boom action, cab 7, crawler 8, travel motor 9 and slewing platform (slewing motor + transmission mec...

AI Technical Summary

Problems solved by technology

[0013]In order to solve the problem of sudden change in speed caused by the increase or decrease of the movement when two movements of the positive flow excavator are subtracted from one movement and one movement is increased by one movement, the compound movement of the positive flow excavator is improved Coordination, the purpose of the present invention is to provide a method for solving the coordination of compound actions of the positive flow excavator without changing the structure of the positive flow excavator, without adding a control switch, and without increasing the cost

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