CN102829012A - Hydraulic damping device - Google Patents
Hydraulic damping device Download PDFInfo
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- CN102829012A CN102829012A CN2012103459725A CN201210345972A CN102829012A CN 102829012 A CN102829012 A CN 102829012A CN 2012103459725 A CN2012103459725 A CN 2012103459725A CN 201210345972 A CN201210345972 A CN 201210345972A CN 102829012 A CN102829012 A CN 102829012A
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- valve
- way valve
- hydraulic
- damping
- damping device
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Abstract
The invention relates to a hydraulic damping device for controlling and adjusting a dynamic process of a reversing motion of a valve core of a hydraulic controlled slide valve type hydraulic control valve. The device is of an integrated structure, and consists of a first one-way valve, a damping hole and a second one-way valve. An external screw thread is processed at the outer end of the device and the external screw thread can be inserted, screwed and installed in the hydraulic control valve. The first one-way valve, the damping hole and the second one-way valve are connected in parallel, and the first and second one-way valves are arranged opposite to each other. The hydraulic damping device is compact in structure and convenient to arrange, and the damping effects in positive and reverse motions of the valve core of the hydraulic controlled slide valve type hydraulic control valve can be respectively controlled and adjusted, and the valve core of the slide valve reveres stably and quickly.
Description
Technical field
[0001] the present invention relates to be used for the hydraulic damping device of the regulating and controlling of hydraulic control sliding valve style hydraulic control valve core switching-over motion dynamic process.
Background technique
Hydraulic control sliding valve style hydraulic control valve is widely used in the valve control hydraulic system, and the dynamic process of valve core movement is associated with the dynamic process of host motion, and the switching-over dynamic process of spool is to main frame traveling comfort, rapidity and control travelling comfort and have material impact.Usually hydraulic control sliding valve style hydraulic control valve core switching-over motion leans on hydraulic coupling to drive, and reseting movement leans on spring force to drive, and motion has asymmetric property; And be mostly low damped system, especially for the high-volume hydraulic system, the spool quality is big; Switching-over movement process inertia is big; For making spool switching-over motion steadily fast, at present, be employed in the kinetic damping that the form that the oil return damping hole is set in the spool reversing oil circuit is come regulating spool in the engineering practice more; Advantage such as that this damping device has is simple in structure, technology is good; But can't satisfy the difference regulating and controlling of the forward and reverse switching-over kinetic damping of sliding valve style hydraulic control valve core mechanism, the asymmetry of this and spool bidirectional-movement can not be mated fully, makes valve core of the spool valve switching-over stationarity and rapidity variation; Be prone to cause the overshoot fluctuation of flow system flow or pressure, cause problems such as main frame vibrations, noise.
Summary of the invention
The purpose of this invention is to provide a kind of hydraulic damping device; Can realize the difference regulating and controlling of the forward and reverse movement process damping function of sliding valve style hydraulic control valve core; To adapt to the asymmetry requirement of spool bidirectional-movement; Guarantee valve core of the spool valve steadily, switching-over fast, thereby the vibrations of abatement system, noise improve the handling of main frame.
The present invention is a kind of hydraulic damping device; Be processed with two convex shoulders on the external cylindrical surface of damping device 1; The i.e. first convex shoulder TJ1 and the second convex shoulder TJ2; Be processed with outside thread on the first convex shoulder TJ1, damping device 1 screwed be installed in the hydraulic control valve, damping hole 1.2 is the diameters of axle by the second convex shoulder TJ2
d1, axial length
lAperture with valve body inner bore matching part FT
d2 annuluss that form constitute, and first one-way valve 1.1, damping hole 1.2 and second one-way valve 1.3 are connected in parallel, and the arranged direction of first one-way valve 1.1 and second one-way valve 1.3 is opposite.
The present invention compares with background technique; The beneficial effect that has is: hydraulic control sliding valve style hydraulic control valve is widely used in the valve control hydraulic system, and spool switching-over motion leans on hydraulic coupling to drive usually, and reseting movement leans on spring force to drive; Stressed during the spool bidirectional-movement have an asymmetric property; At present, be employed in the kinetic damping that the form that the oil return damping hole is set in the spool reversing oil circuit is come regulating spool in the engineering practice, this damping device can't satisfy the difference regulating and controlling of the forward and reverse switching-over kinetic damping of sliding valve style hydraulic control valve core mechanism more; The asymmetry of this and spool bidirectional-movement can not be mated fully; Make valve core of the spool valve switching-over stationarity and rapidity variation to be prone to cause the overshoot fluctuation of flow system flow or pressure, cause problems such as main frame vibrations, noise.A kind of hydraulic damping device involved in the present invention; Adopt the parallel connection of two different one-way valves of reversed arrangement cracking pressure and damping hole to constitute; When spool commutates motion under hydraulic coupling drives; The one-way valve of little cracking pressure oppositely ends, and the one-way valve of big cracking pressure and damping hole play damping function to the motion of spool; Spool under the spring force effect to resetting direction when motion; The one-way valve of big cracking pressure oppositely ends, and the one-way valve of little cracking pressure and damping hole play damping function to the motion of spool, the Maximum differential pressure at damping hole two ends when the one-way valve of these two reversed arrangement defines spool different motion direction respectively; Be asymmetric damping; Stressed nonsymmetry is complementary during with the spool bidirectional-movement, makes valve switching-over motion and reseting movement all can obtain good damping characteristic, operates steadily.The present invention can realize that the asymmetry of the asymmetric and damping function that the forward and reverse movement process of sliding valve style hydraulic control valve core is stressed is complementary, guarantee valve core of the spool valve steadily, switching-over fast, thereby the vibrations of abatement system, noise improve the handling of main frame.
Description of drawings
Fig. 1 is a schematic diagram of the present invention, and Fig. 2 is that spool of the present invention is the structural drawing of ball valve, and Fig. 3 is that spool of the present invention is the structural drawing of cone valve.
Reference character and corresponding name are called: 1. damping device, and 1.1. first one-way valve, the 1.2. damping hole, 1.3. second one-way valve,
d1. the diameter of axle,
l. axial length,
d2. aperture, TJ1. first convex shoulder, TJ2. second convex shoulder, FT. valve body inner bore matching part,
e,
f,
g,
h. the inside oil duct in the damping device, A, B. fluid flow direction.
Embodiment
Like Fig. 1, Fig. 2 and shown in Figure 3, hydraulic damping device of the present invention is an integrated structure, is made up of first one-way valve 1.1, damping hole 1.2 and second one-way valve 1.3, and the device outer end is processed with outside thread, can insert to screw to be installed in the hydraulic control valve.Wherein damping hole 1.2 relies on these hydraulic damping devices to pack on the hydraulic control valve back into by the diameter of axle of the second convex shoulder TJ2
d1, axial length
lAperture with valve body inner bore matching part FT
dThe annulus of 2 formation constitutes; First one-way valve 1.1, damping hole 1.2 and second one-way valve 1.3 are connected in parallel; And first one-way valve 1.1 is opposite with second one-way valve, 1.3 arranged direction, and the spring rate of first one-way valve 1.1 is greater than the spring rate of second one-way valve 1.3.This hydraulic damping Unit Installation direction for when fluid A when mobile; The reset motion of direction of hydraulic damping hole 1.2 and 1.3 pairs of valve core springs of second one-way valve plays the adjusting control action; When fluid B when mobile; The motion of hydraulic damping hole 1.2 and 1.1 pairs of spool opening directions of first one-way valve plays the adjusting control action, and first one-way valve 1.1, second one-way valve 1.3 are seat valve formula structure, and spool can be ball valve and also can be cone valve.
Working procedure of the present invention is following
Like Fig. 1, Fig. 2 and shown in Figure 3, after hydraulic damping device of the present invention is screwed and is installed in the hydraulic control valve, by the diameter of axle of the second convex shoulder TJ2
d1, axial length
lAperture with valve body inner bore matching part FT
dThe annulus of 2 formation has constituted damping hole 1.2, and the damping function of damping hole 1.2 can be through changing the diameter of axle
d1, aperture
d2, axial length
lDimensional structure adjust, the more little longer then damping function in annulus is strong more, on the contrary then damping function more a little less than.When spool under hydraulic coupling drives when opening direction moves, when mobile, fluid passes through oil duct to fluid to B
g,
hGet into second one-way valve, 1.3 spring chambers, damping hole 1.2 and first one-way valve, 1.1 non-spring chambers; This moment, second one-way valve 1.3 oppositely ended; Regulate by first one-way valve 1.1,1.2 pairs of spool opening movements of damping hole dynamic process; When spool drives down when the direction that resets is moved at spring force, when mobile, fluid passes through oil duct to fluid to A
f,
eGet into first one-way valve, 1.1 spring chambers, damping hole 1.2 and second one-way valve, 1.3 non-spring chambers; This moment, first one-way valve 1.1 oppositely ended; Regulate by second one-way valve 1.3,1.2 pairs of valve core reset motions of damping hole dynamic process; Like this, adopt different first one-way valve 1.1 of two reversed arrangement cracking pressures, second one-way valve 1.3 and damping hole parallel-connection structure, when spool when hydraulic coupling drives that switching-over is moved down; Second one-way valve 1.3 of little cracking pressure oppositely ends, and first one-way valve 1.1 of big cracking pressure and the motion of 1.2 pairs of spools of damping hole play damping function; Spool under the spring force effect to resetting direction when motion; First one-way valve 1.1 of big cracking pressure oppositely ends, and second one-way valve 1.3 of little cracking pressure and the motion of 1.2 pairs of spools of damping hole play damping function, the Maximum differential pressure at damping hole two ends when the one-way valve of these two reversed arrangement defines spool different motion direction respectively; Be asymmetric damping; Stressed nonsymmetry is complementary during with the spool bidirectional-movement, makes spool switching-over motion and reseting movement all can obtain good damping characteristic, operates steadily; Thereby avoided the flow system flow that the spool switching-over steadily do not cause or the overshoot fluctuation of pressure, improved the handling of main frame.
Claims (5)
1. hydraulic damping device; Be processed with two convex shoulders on the external cylindrical surface of damping device (1); I.e. first convex shoulder (TJ1) and second convex shoulder (TJ2); Be processed with outside thread on first convex shoulder (TJ1), damping device (1) screwed be installed in the hydraulic control valve, it is characterized in that damping hole (1.2) be by the diameter of axle of second convex shoulder (TJ2) (
d1), axial length (
L)With the aperture of valve body inner bore matching part (FT) (
d2) annulus that forms constitutes, and first one-way valve (1.1), damping hole (1.2) and second one-way valve (1.3) are connected in parallel, and first one-way valve (1.1) is opposite with the arranged direction of second one-way valve (1.3).
2. hydraulic damping device according to claim 1 is characterized in that first one-way valve (1.1), second one-way valve (1.3) are seat valve formula structure, and spool can be ball valve.
3. hydraulic damping device according to claim 1 is characterized in that spool is a cone valve.
4. hydraulic damping device according to claim 1 is characterized in that the spring rate of the spring rate of first one-way valve (1.1) greater than second one-way valve (1.3).
5. based on the described hydraulic damping device of claim 1; It is characterized in that hydraulic damping (1) device installation direction for when fluid (A) when mobile, the reset motion of direction plays the adjusting control action to valve core spring for damping hole (1.2) and second check valve (1.3); When fluid (B) when mobile, damping hole (1.2) and first check valve (1.1) play the adjusting control action to the motion of spool opening direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103459725A CN102829012A (en) | 2012-09-18 | 2012-09-18 | Hydraulic damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103459725A CN102829012A (en) | 2012-09-18 | 2012-09-18 | Hydraulic damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102829012A true CN102829012A (en) | 2012-12-19 |
Family
ID=47332261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103459725A Pending CN102829012A (en) | 2012-09-18 | 2012-09-18 | Hydraulic damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102829012A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351901A (en) * | 2016-08-31 | 2017-01-25 | 北京精密机电控制设备研究所 | Constant flow control valve composed of damping network and two stages slide valves |
| CN113685389A (en) * | 2021-07-30 | 2021-11-23 | 中国航空工业集团公司沈阳飞机设计研究所 | Bidirectional circulation valve and hydraulic actuator cylinder control system thereof |
| CN114962370A (en) * | 2022-04-02 | 2022-08-30 | 山东临工工程机械有限公司 | Bidirectional variable damping one-way valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002127924A (en) * | 2000-10-23 | 2002-05-09 | Unisia Jkc Steering System Co Ltd | Steering damper |
| CN101255878A (en) * | 2007-09-21 | 2008-09-03 | 兰州理工大学 | Energy-saving vibration-reduction type flux amplification valve |
| CN201972990U (en) * | 2011-03-26 | 2011-09-14 | 徐州压力机械有限公司 | Hydraulic sliding valve |
| CN102410270A (en) * | 2011-11-09 | 2012-04-11 | 兰州理工大学 | Turning gradient control valve |
-
2012
- 2012-09-18 CN CN2012103459725A patent/CN102829012A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002127924A (en) * | 2000-10-23 | 2002-05-09 | Unisia Jkc Steering System Co Ltd | Steering damper |
| CN101255878A (en) * | 2007-09-21 | 2008-09-03 | 兰州理工大学 | Energy-saving vibration-reduction type flux amplification valve |
| CN201972990U (en) * | 2011-03-26 | 2011-09-14 | 徐州压力机械有限公司 | Hydraulic sliding valve |
| CN102410270A (en) * | 2011-11-09 | 2012-04-11 | 兰州理工大学 | Turning gradient control valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351901A (en) * | 2016-08-31 | 2017-01-25 | 北京精密机电控制设备研究所 | Constant flow control valve composed of damping network and two stages slide valves |
| CN113685389A (en) * | 2021-07-30 | 2021-11-23 | 中国航空工业集团公司沈阳飞机设计研究所 | Bidirectional circulation valve and hydraulic actuator cylinder control system thereof |
| CN113685389B (en) * | 2021-07-30 | 2023-03-14 | 中国航空工业集团公司沈阳飞机设计研究所 | Bidirectional flow valve and hydraulic actuator cylinder control system thereof |
| CN114962370A (en) * | 2022-04-02 | 2022-08-30 | 山东临工工程机械有限公司 | Bidirectional variable damping one-way valve |
| CN114962370B (en) * | 2022-04-02 | 2023-09-22 | 山东临工工程机械有限公司 | Bidirectional variable damping one-way valve |
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Application publication date: 20121219 |