Hydraulic cylinder pressure control device, system and method

A technology of a control device and a hydraulic cylinder, which is applied in the field of hydraulic control, can solve the problems of rising oil supply pressure, reel stall of construction machinery, property loss, etc., and achieves the effect of avoiding instantaneous rise and preventing stall.

Pending Publication Date: 2020-12-29
BEIJING SANY INTELLIGENT MFG TECH CO LTD
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Problems solved by technology

[0002] In construction machinery, a corresponding hydraulic cylinder is usually set for each working part. Taking the grab of an excavator as an example, when the grab is quickly controlled by the operating handle to perform the corresponding opening or closing action, the hydraulic cylinder of the grab The oil supply pressure will rise instantly, resulting in the instantaneous contraction of the pipeline in the oil delivery link, accelerating the damage of the pipeline in the oil delivery link, and in severe cases, it will cause the reel of the construction machinery to stall, causing unnecessary property loss

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  • Hydraulic cylinder pressure control device, system and method
  • Hydraulic cylinder pressure control device, system and method
  • Hydraulic cylinder pressure control device, system and method

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Embodiment Construction

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, every other embodiment obtained by those skilled in the art withou...

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Abstract

The invention provides a hydraulic cylinder pressure control device, system and method. The control device comprises a pressure adjusting device and a first pressure sensor. The pressure adjusting device is arranged on a pipeline between an oil inlet path and / or an oil outlet path of an oil conveying link of to-be-adjusted equipment and an oil tank of the to-be-adjusted equipment. The first pressure sensor is arranged on a pipeline between an oil inlet of the pressure adjusting device and the oil conveying link. Thus, the oil supply pressure of a hydraulic cylinder in the oil conveying link can be collected through the first pressure sensor, the oil supply pressure of the hydraulic cylinder in the oil conveying link is adjusted through the pressure adjusting device arranged between the oilinlet path and / or the oil outlet path of the oil conveying link of the to-be-adjusted equipment and the oil tank of the to-be-adjusted equipment, real-time adjustment of the oil supply pressure of the hydraulic cylinder in the oil conveying link is achieved, the oil supply pressure in the hydraulic cylinder can be prevented from rising instantaneously, and the situation that a reel of an engineering machine stalls can be prevented.

Description

technical field [0001] The present application relates to the technical field of hydraulic control, in particular to a hydraulic cylinder pressure control device, control system and control method. Background technique [0002] In construction machinery, a corresponding hydraulic cylinder is usually set for each working part. Taking the grab of an excavator as an example, when the grab is quickly controlled by the operating handle to perform the corresponding opening or closing action, the hydraulic cylinder of the grab The oil supply pressure will rise instantly, resulting in the instantaneous contraction of the pipeline in the oil delivery link, accelerating the damage of the pipeline in the oil delivery link, and in severe cases, it will cause the reel of the construction machinery to stall, causing unnecessary property loss. [0003] Therefore, how to adjust the oil supply pressure of the hydraulic cylinder in the oil delivery link to ensure the personal safety of the o...

Claims

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Application Information

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IPC IPC(8): F15B15/20F15B20/00F15B19/00F15B13/04
CPCF15B13/04F15B15/20F15B19/00F15B20/00
Inventor 李俊飞赵伟哲陈立明
Owner BEIJING SANY INTELLIGENT MFG TECH CO LTD
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