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Method and device for controlling hydraulic oil cylinder, pumping system and concrete pumping device

A technology of hydraulic cylinders and pumping systems, applied in fluid pressure actuation devices, mechanical equipment, servo motors, etc., can solve problems such as vibration and impact, and achieve the effect of reducing equipment damage, reducing damage, and offsetting system impact.

Inactive Publication Date: 2012-04-11
ZOOMLION HEAVY IND CO LTD
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  • Abstract
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Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and device for controlling a hydraulic oil cylinder, a pumping system, and concrete pumping equipment, so as to solve the problem that the output adjustment mode of the concrete pump in the prior art has brought great inconvenience to the equipment of the pumping system. The problem of shock and vibration

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  • Method and device for controlling hydraulic oil cylinder, pumping system and concrete pumping device
  • Method and device for controlling hydraulic oil cylinder, pumping system and concrete pumping device
  • Method and device for controlling hydraulic oil cylinder, pumping system and concrete pumping device

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Embodiment Construction

[0020] 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.

[0021] In this embodiment, the theoretical square quantity of the outlet of the concrete pump is adjusted by adjusting the acceleration of the pumping cylinder 5 during the forward process and the retracted process. It is possible to adjust only the acceleration during the forward process or the backward process, preferably, both of them can be adjusted, refer to figure 2 and Figure 3A as well as Figure 3B , figure 2 is a schematic diagram of basic steps of a method for adjusting the output flow of a pump according to an embodiment of the present invention, Figure 3A is a cylinder time-velocity curve according to an embodiment of the present invention, Figure 3B is another cylinder t...

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Abstract

The invention provides a method and device for controlling a hydraulic oil cylinder, a pumping system and a concrete pumping device, which can be used for solving the problems of larger impact and vibration of an output adjusting mode of the concrete pump in the prior art to the device of the pumping system. The method comprises the steps of: controlling the acceleration of the hydraulic oil cylinder during advancing of the hydraulic oil cylinder; and / or controlling the acceleration of the hydraulic oil cylinder during returning of the hydraulic oil cylinder. By adopting the technical scheme of the invention, impact to the system can be reduced, and damage to the device can be reduced.

Description

technical field [0001] The invention relates to the technical field of hydraulic and electrical control, in particular to a method and device for controlling a hydraulic oil cylinder, a pumping system, and concrete pumping equipment. Background technique [0002] The theoretical calculation of the concrete output volume of the concrete pump is calculated by the method of the theoretical volume of pumping per unit time; at present, the adjustment of the concrete pump volume is mainly realized by adjusting the maximum operating speed of the pumping cylinder, that is, by limiting the main pump The way of maximum displacement, combined with the following figure 1 To illustrate this, figure 1 is a schematic diagram of the basic structure of a pumping system according to the prior art. [0003] When the automatic pumping is started, one of the electromagnets of the hydraulic reversing valves 3 and 4 is energized, the pumping cylinder 5 and the swing cylinder 6 are in the positiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/04
Inventor 裴杰赵佩珩
Owner ZOOMLION HEAVY IND CO LTD
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