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Method and device for controlling pumping speed, pumping system and engineering machine

A speed control device and speed control technology are applied in the field of pumping speed control method, control device, pumping system and construction machinery, which can solve the problems of low reliability and cumbersome pumping control procedures, and achieve extended service life, The effect of reducing the number of fatigue stress and improving the suction characteristics

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

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Problems solved by technology

[0007] The present invention aims to provide a pumping speed control method, a control device, a pumping system and construction machinery to solve the problems of cumbersome pumping control procedures and low reliability in the prior art

Method used

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  • Method and device for controlling pumping speed, pumping system and engineering machine
  • Method and device for controlling pumping speed, pumping system and engineering machine
  • Method and device for controlling pumping speed, pumping system and engineering machine

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Embodiment Construction

[0032] 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.

[0033] The target pumping speed in this application refers to the average pumping speed within one pumping cycle, and the stable pumping speed refers to the stable speed in a uniform pumping state. In general, the steady rate of pumping is higher than the average pumping rate.

[0034] like image 3 As shown, according to the embodiment of the present invention, the pumping system includes a delivery cylinder, a main oil pump for driving the delivery cylinder, and an engine for driving the main oil pump. The pumping speed control method includes the following steps: S10, according to the pumping speed stage where the target pumping speed is, determine the start-up acceleration of the delivery cylin...

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Abstract

The invention provides a method and device for controlling the pumping speed, a pumping system and an engineering machine. The pumping system comprises a delivering oil cylinder, a main oil cylinder and an engine. The method for controlling the pumping speed includes the following steps of S10, determining the starting acceleration, uniquely corresponding to a pumping speed stage of the target pumping speed, of the delivering oil cylinder according to the pumping speed stage of the target pumping speed; S20, determining the stable pumping speed of the delivering oil cylinder according to the starting acceleration and the target pumping speed; S30, determining the rotating speed of the engine according to the pumping speed stage; S40, controlling a delivery-capacity current slope value of the main oil cylinder according to the starting acceleration and the rotating speed of the engine; S50, controlling a delivery-capacity current stable value of the main oil cylinder according to the stable pumping speed and the rotating speed of the engine to enable the practical pumping speed of the delivery oil cylinder to reach the stable pumping speed according to the starting acceleration. By means of the method for controlling the pumping speed, the problems that in the prior art, pumping control processes are complex, and reliability is not high can be solved.

Description

technical field [0001] The invention relates to the field of pumping system control, in particular to a pumping speed control method, a control device, a pumping system and engineering machinery. Background technique [0002] At present, most concrete pumping machines use double concrete cylinders for pumping. The pumping speed control strategy directly affects the vibration performance of the vehicle, the energy saving effect and the characteristics of concrete suction, which is closely related to the efficiency of the entire equipment and directly affects the customer's use. Comfort and economy. Therefore, the pumping speed control strategy has always been the focus of attention in the field of pumping. [0003] At present, the speed control strategy of conveying concrete mainly has the following two schemes: [0004] Solution 1: Adjust the maximum value of the stable displacement current of the main oil pump of the pumping hydraulic system to realize the change of the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06F04B17/05
Inventor 刘瑞国裴杰
Owner ZOOMLION HEAVY IND CO LTD
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