Device for implementing external control and high-pressure automatic control

An external control, high-pressure technology, applied in the direction of fluid pressure actuating devices, servo motors, servo motor components, etc., can solve the problem of low after-sales pressure of construction machinery, and achieve the effect of reducing after-sales pressure

Pending Publication Date: 2019-11-05
LIYUAN HYDRAULIC (SUZHOU) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has the advantages that the after-sales pressure of the existing construction machinery is small and the operation is not easy to be fatigued

Method used

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  • Device for implementing external control and high-pressure automatic control
  • Device for implementing external control and high-pressure automatic control
  • Device for implementing external control and high-pressure automatic control

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

[0029] Example. A device that realizes external control and high-voltage automatic control, such as figure 1 As shown, including the base body 1, the base body 1 is provided with a blind hole, the bottom surface of the blind hole is provided with an oil inlet 10, the blind hole is provided with a tubular control valve sleeve 2, and the control valve sleeve 2 is provided with a tubular control valve Core 3, the control spool 3 is provided with a spool 4, one end of the spool 4 is provided with a spring seat 5, and the outside of the spring seat 5 (the side near the top of the blind hole) is provided with a limit seat 6, and the spring seat 5 and the limit An external control spring 7 is arranged between the seats 6, and the other end of the spool 4 protrudes from the control spool 3 and extends radi...

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PUM

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Abstract

The invention discloses a device for implementing external control and high-pressure automatic control. The device comprises a basic body. A blind hole is formed in the basic body. An oil inlet is formed in the bottom surface of the blind hole. A control valve sleeve is arranged in the blind hole. A control valve element is arranged in the control valve sleeve. A valve element is arranged in the control valve element. A spring seat is arranged at one end of the valve element. A limiting base is arranged on the outer side of the spring seat. An external control spring is arranged between the spring seat and the limiting base. The other end of the valve element extends out of the control valve seat and radially extends externally to form a plunger. The plunger makes contact with the bottom surface of the blind hole. A high-pressure spring is arranged between the plunger and the control valve element. The device further comprises an oil return way, a first oil way, a first annular groove,a second oil way, a high-pressure oil way and a third oil way. The device for implementing external control and high-pressure automatic control has the advantages that with the device, engineering machines in the prior art can cause low after-sales pressure, and are not prone to causing fatigue to operators during operation.

Description

technical field [0001] The invention belongs to the field of crawler construction machinery, in particular to a device for realizing external control and high-voltage automatic control of the crawler construction machinery. Background technique [0002] In crawler-type construction machinery, it is the motor system that drives the construction machinery. The motor used in the motor system is a two-speed hydraulic motor. The displacement of the motor is controlled by the pilot hydraulic pressure. When the motor is connected to the external control oil of the pilot hydraulic pressure, the motor For small displacement, the output torque of the motor is small and the speed is high, and the construction machinery starts at high speed at high speed; when the motor is disconnected from the external control oil of the pilot hydraulic pressure, the motor has a large displacement, the output torque of the motor is large, and the speed is low , the construction machinery starts at a lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/06F15B11/22
CPCF15B11/22F15B13/06
Inventor 王晋芝江文吴学江李东实
Owner LIYUAN HYDRAULIC (SUZHOU) CO LTD
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