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Reliable constant tension valve

A constant tension and constant tension technology, applied in the field of hydraulic systems, can solve problems such as large space occupation, waste of installation space, and leakage of lifting systems

Pending Publication Date: 2022-02-25
SOUTH CHINA MARINE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The function of the constant tension hydraulic system is to keep the winch wire rope at a certain tension. When the crane does not use the constant tension hydraulic system, there is a problem that the lifting system leaks and the lifting system slips

Method used

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  • Reliable constant tension valve

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Embodiment Construction

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

[0018] Such as figure 1 As shown, a reliable constant tension valve includes a winch motor and a constant tension valve. The constant tension valve includes a control oil port P51, a lifting oil port A52 connected with the winch motor lifting oil circuit, and a winch motor lowering oil circuit. The descending oil port B53, electromagnetic reversing valve 1, first logic valve 21, second logic valve 22, pilot relief valve 3, direct pilot relief valve 4 and oil drain port L54; the oil drain port L54 is connected to the oil tank connect.

[0019] The oil inlet of the electromagnetic reversing valve 1 is connected to the control oil port P51, and the oil outlet distribution of the electromagnetic reversing valve 1 is connected to the control oil ports of the first logic valve 21 and the second logic valve 22; the electromagnetic reversing...

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Abstract

The invention provides a reliable constant tension valve which comprises a winch motor and a constant tension valve, wherein the constant tension valve comprises a control oil port P, a lifting oil port A connected with a lifting oil way of the winch motor, a descending oil port B connected with a descending oil way of the winch motor, an electromagnetic reversing valve, a first logic valve, a second logic valve, a pilot-operated overflow valve, a direct-guide overflow valve and an oil drainage port L; and the oil drainage port L is connected with the oil tank. Thereliable constant tension valve has the advantage that when the crane does not use the constant tension function, the phenomenon that the crane slides due to pressure leakage of a lifting system is avoided.

Description

technical field [0001] The invention relates to the technical field of hydraulic systems, in particular to a reliable constant tension valve. Background technique [0002] The function of the constant tension hydraulic system is to keep the winch wire rope at a certain tension. When the crane does not use the constant tension hydraulic system, there is a problem that the lifting system leaks and the lifting system slips. Contents of the invention [0003] The invention provides a reliable constant tension valve. With the structure of the invention, when the crane does not use the constant tension function, it can avoid the situation that the lifting system pressure leaks to cause the car to slip. [0004] In order to achieve the above object, the technical solution of the present invention is: a reliable constant tension valve, including a winch motor and a constant tension valve, the constant tension valve includes a control oil port P, a lifting oil port connected to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/50B66D1/08F15B13/02F15B19/00
CPCB66D1/50B66D1/08F15B13/029F15B19/00
Inventor 安万平邹韬李新献罗国善张福江江力邓旭毅林云志
Owner SOUTH CHINA MARINE MACHINERY