Hydraulic system and its throttle valve
A throttle valve and orifice technology, which is applied to fluid pressure actuating devices, servo motor components, mechanical equipment, etc., can solve the problem of increasing the processing difficulty of the throttle valve core, affecting the service life of the throttle valve, and increasing the wear of the steel ball 111. and other problems, to achieve the best throttling adjustment stability and reliability, easy processing, and reduce the effect of opening impact.
Active Publication Date: 2016-03-02
XCMG HYDRAULICS CO LTD
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0013] The throttle spool 11 and the adjustment rod 14 are connected by a spring 15 and a steel ball 111 to realize the radial parallel floating of the throttle spool 11, the angular tilt in any left direction along the axis, and the free axial translation. The connection structure requires an annular groove 11a on the inner wall of the through hole of the throttle spool, which increases the processing difficulty of the throttle spool; at the same time, the radial and axial movement of the throttle spool 11 mainly utilizes the rolling characteristics of the steel ball 111, The wear of the steel ball 111 is increased, and it is easy to generate vibration and noise during operation, which affects the service life of the throttle valve. In addition, a circle of steel ball 111 is installed on the head of the throttle valve core 11 without limitation. During the working process, the steel ball 111 is easy to fall off cause valve damage
Method used
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Embodiment Construction
[0038] The core of the present invention is to provide a hydraulic system and a throttle valve thereof. The throttle valve has better throttling adjustment stability and reliability, and has a long service life.
[0039] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0040] Please refer to figure 2 , figure 2 It is a structural schematic diagram of a specific embodiment of the throttle valve provided by the present invention.
[0041] In this embodiment, the throttle valve includes a valve body 20, and the valve body 20 has an oil inlet port and an oil outlet port, and the two communicate through the throttle port.
[0042] The throttle valve also includes a cone valve 30 and an adjusting screw rod 40, both of which are located in the inner cavity of the valve body 20; wherein, the...
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The invention discloses a hydraulic system and a throttle valve. The throttle valve comprises a valve body, an adjusting screw in the valve body cavity and a tapered valve at the front end of the adjusting screw. An oil inlet and an oil outlet are formed in the valve body and are communicated through a throttle opening. An axial hole communicated with the oil inlet is formed in the front end of the adjusting screw, and throttle holes communicated with the axial hole is formed in the peripheral wall. The tapered valve can move axially to open and close the throttle opening. The tapered valve and the front end can move axially mutually to close to open throttle holes. The throttle valve is good in throttle adjusting stability and reliability and long in service life.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a hydraulic system and a throttle valve thereof. Background technique [0002] Hydraulic systems are widely used in the field of construction machinery technology, such as excavators, forklifts, tower cranes and other construction machinery are equipped with hydraulic systems. [0003] The hydraulic system is usually provided with a throttle valve, and the flow rate flowing into or out of the actuator is changed by adjusting the orifice area of the throttle valve, so as to change the speed of the actuator. [0004] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a throttle valve in the prior art. [0005] Such as figure 1 As shown, the throttle valve includes a throttle spool 11 and a valve sleeve over the throttle spool 11; the valve sleeve includes a primary valve sleeve 12 over the throttle spool 11 and a primary valve sleeve ove...
Claims
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IPC IPC(8): F15B13/02
Inventor 沙世伟张强李楠赵阳阳
Owner XCMG HYDRAULICS CO LTD