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Overload automatic resetting valve of hydraulic motor

A technology of automatic reset and overload, applied in servo motor components, fluid pressure actuating devices, servo meter circuits, etc., can solve problems such as damage to hydraulic components and affect the normal use of equipment, and achieve the effect of avoiding system failures

Active Publication Date: 2016-06-08
SHANGHAI UNIV OF ENG SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the swash plate axial piston motor is in use, when the hydraulic motor is working at high speed, if the load suddenly increases, the hydraulic oil pressure inside the hydraulic system will increase, and the hydraulic components in the hydraulic system will easily Damaged due to excessive load pressure, affecting the normal use of the equipment

Method used

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  • Overload automatic resetting valve of hydraulic motor

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Embodiment Construction

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

[0012] Such as figure 1 A hydraulic motor overload automatic reset valve shown includes a valve body 1, and the valve body 1 is sequentially provided with a left screw plug 2, a variable control valve core 3, a spring 4, a spring seat 5, a right screw plug 6, and a left screw plug. The plug 2 is provided with an oil hole, and the variable control spool 3 is provided with an automatic reset spool 7; the left end of the automatic reset spool 7 extends into the variable control sp...

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Abstract

The invention discloses an overload automatic resetting valve of a hydraulic motor. The overload automatic resetting valve comprises a valve body, wherein the valve body is internally provided with a left screw plug, a variable control valve element, a spring, a spring seat and a right screw plug in sequence; an oil hole is formed in the left screw plug; the variable control valve element is internally provided with an automatic resetting valve element; the left end of the automatic resetting valve element stretches into the variable control valve element; a resetting oil cavity is formed between the left end face of the automatic resetting valve element and the variable control valve element; and the resetting oil cavity is communicated with a working oil path. The overload automatic resetting valve of the hydraulic motor has the beneficial effects that the change from a high speed to a low speed is finished under an overload condition, so that large-torque power output is realized; and caterpillar band driving equipment is automatically changed to work at a low-speed and large-torque state, and phenomena that system faults are caused by the overload and the system is damaged are avoided.

Description

technical field [0001] The invention relates to the technical field of hydraulic accessories, in particular to an automatic reset valve for a hydraulic motor exceeding load. Background technique [0002] The swash plate axial piston motor is a device that converts hydraulic energy into mechanical energy. It mainly completes the output of torque on construction machinery and other equipment, and realizes the driving of construction machinery and equipment. During the whole process, the hydraulic oil is controlled by the valve. Road connection and other parking brake functions, variable functions, pressure buffer functions, etc. [0003] When the swash plate axial piston motor is in use, when the hydraulic motor is working at high speed, if the load suddenly increases, the hydraulic oil pressure inside the hydraulic system will increase, and the hydraulic components in the hydraulic system will easily Damaged due to excessive load pressure, affecting the normal use of the equ...

Claims

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Application Information

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IPC IPC(8): F15B13/02
CPCF15B13/023F15B2211/405
Inventor 王金铂邵作顺
Owner SHANGHAI UNIV OF ENG SCI
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