Short-stroke pressure-maintaining high-pressure heavy hydraulic cylinder with high-pressure proximity switches

A technology of proximity switch and hydraulic cylinder, applied in the direction of fluid pressure actuating device, etc., can solve the problems of difficult operation limit precise control, inability to meet automatic control, poor repeat positioning accuracy, etc., to achieve convenient design and installation and debugging, improve system Safety, small footprint effect

Inactive Publication Date: 2010-12-01
无锡市长江液压缸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, travel switches or proximity switches are usually set outside the hydraulic cylinder, which not only takes up space, but also is easily affected by the surrounding working environment, such as oil stains, solutions, and dust pollution
In addition, due to the

Method used

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  • Short-stroke pressure-maintaining high-pressure heavy hydraulic cylinder with high-pressure proximity switches
  • Short-stroke pressure-maintaining high-pressure heavy hydraulic cylinder with high-pressure proximity switches
  • Short-stroke pressure-maintaining high-pressure heavy hydraulic cylinder with high-pressure proximity switches

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0018] As shown in the figure: the short-range pressure-maintaining high-pressure heavy-duty hydraulic cylinder with a built-in second proximity switch in the embodiment is mainly composed of a cylinder head 1, a pipeline 2, a cylinder barrel 3, a piston rod 4, a piston 5, a functional valve block 7, The cylinder bottom 9, the second proximity switch 11, the protective cover 12, the first proximity switch 16 and other components are composed.

[0019] Such as figure 1 As shown, the piston rod 4 is assembled in the cylinder barrel 3, and the front and rear ends of the cylinder barrel 3 utilize screws and washers to install the cylinder head 1 and the cylinder bottom 8 respectively. The center of the cylinder head 1 is provided with a cylinder head through hole, and the piston rod 4 Through the through hole of the cylinder head, the piston rod 4 and the through ...

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Abstract

The invention relates to a short-stroke pressure-maintaining high-pressure heavy hydraulic cylinder with high-pressure proximity switches, which comprises a cylinder barrel and a piston rod assembled in the cylinder barrel. The front end and the back end of the cylinder barrel are respectively provided with a cylinder head and a cylinder bottom, the center of the cylinder head is provided with a cylinder head through hole, the piston rod penetrates through the cylinder head through hole, the piston rod is cooperated with the cylinder head through hole in a sealed sliding mode, and the inner end of the piston rod is provided with a piston. The invention is characterized in that a first circumferential boss and a second circumferential boss are formed on the piston rod at the both sides of the piston, the cylinder head is provided with a first proximity switch, and the first circumferential boss of the piston rod is overlapped with the induction end of the first proximity switch in a non-contact mode when entering a cavity of the cylinder head; the cylinder bottom is provided with a second proximity switch, and the second circumferential boss of the piston rod is overlapped with the induction end of the second proximity switch in a non-contact mode when entering a cavity of the cylinder bottom. The invention has compact and reasonable structure, small occupied space and long service life; pressure-maintaining locking can be realized, and thus, the safety is high.

Description

technical field [0001] The invention belongs to the technical field of hydraulic equipment, and relates to an improvement of a hydraulic cylinder, in particular to a short-distance pressure-maintaining high-pressure heavy-duty hydraulic cylinder with a high-pressure proximity switch capable of accurately detecting the position and speed of a piston rod. Background technique [0002] A hydraulic cylinder is a device that converts hydraulic energy into mechanical energy and enables the machine to achieve reciprocating linear motion or swing. Its transmission works smoothly and has high reliability. Due to the increasing complexity of actual work requirements and the higher and higher requirements for hydraulic cylinder control accuracy, the existing ordinary hydraulic cylinders can no longer fully meet the production needs, resulting in low production efficiency; and they do not have safety protection functions. Poor sex. In order to meet the actual requirements, travel switc...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B15/20
Inventor 宋国裕殷嘉寿潘志荣
Owner 无锡市长江液压缸有限公司
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