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Control method and control device of truck crane and truck crane

A technology of truck cranes and control methods, which is applied in the direction of cranes, engine control, machine/engine, etc., to achieve the effect of reducing work intensity and experience requirements

Active Publication Date: 2016-02-10
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a control method and control device for a truck crane and a truck crane to solve the problem in the prior art that operators need to simultaneously control the accelerator pedal and the control handle

Method used

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  • Control method and control device of truck crane and truck crane
  • Control method and control device of truck crane and truck crane
  • Control method and control device of truck crane and truck crane

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Embodiment Construction

[0026] 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. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] Embodiments of the present invention provide a truck crane, figure 2 is a schematic diagram of a truck crane according to an embodiment of the present invention, such as figure 2 As shown, the crane of this embodiment adds a torque limiter 160 on the basis of the existing crane. The torque limiter 160 obtains the hydraulic pilot pressure signal corresponding to the adjustment range of the two operating handles through the hydraulic pilot control device 150, and according to The real-time load of the crane obtained from the calculation of the operating conditions of the crane calculates the engine speed matching the opening of the current hydraulically executed control valve, and sends...

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Abstract

The invention aims at providing a control method and a control device of an automobile crane and the automobile crane and relates to the control method and the control device of the automobile crane and the automobile crane. The control method of the automobile crane comprises the following steps that the real-time load of the crane is obtained through calculation by a moment limiter according to the work condition of the crane; a hydraulic pilot control device obtains the regulation amplitude of an operation handle, and hydraulic pilot pressure signals corresponding to the regulation amplitude are output; the moment limiter calculates the engine rotating speed required when an executing mechanism reaches the preset speed through the hydraulic pilot pressure signals and the real-time load; the moment limiter sends out control instructions to an engine electronic control unit according to the required engine rotating speed; and the engine electronic control unit controls the engine to drive a hydraulic pump to output hydraulic oil. The work intensity of operators and the experience requirement on the operators are reduced.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a control method and a control device for a truck crane and the truck crane. Background technique [0002] At present, the actuators of the existing truck cranes are generally driven by hydraulic pressure, relying on the operator to control the operating handle and the accelerator pedal at the same time to cooperate with each other to complete the operation. [0003] figure 1 is a schematic diagram of the control system of the truck crane according to the prior art, such as figure 1 As shown, the control system of the existing truck crane includes: an accelerator pedal 101 , an electronic control unit 102 (ECU, Electronic Control Unit), an engine 103 , a transmission 104 , a hydraulic system, and an operating handle 150 . The hydraulic system includes a plurality of hydraulic pumps 110 , a plurality of hydraulic control valves 120 , a plurality of actuators 130 , and an oil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D29/04B66C23/36
Inventor 陈凯何巍郑庆华
Owner ZOOMLION HEAVY IND CO LTD
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