CN108035925A - A kind of high reliability buffering throttling oil cylinder connection valve block assembly - Google Patents
A kind of high reliability buffering throttling oil cylinder connection valve block assembly Download PDFInfo
- Publication number
- CN108035925A CN108035925A CN201711280742.4A CN201711280742A CN108035925A CN 108035925 A CN108035925 A CN 108035925A CN 201711280742 A CN201711280742 A CN 201711280742A CN 108035925 A CN108035925 A CN 108035925A
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- oil cylinder
- cylinder connection
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003139 buffering effect Effects 0.000 title claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 8
- 210000002445 nipple Anatomy 0.000 claims description 5
- 229910000737 Duralumin Inorganic materials 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 72
- 239000010720 hydraulic oil Substances 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention belongs to technical field of hydraulic oil cylinder, and in particular to a kind of high reliability buffering throttling oil cylinder connection valve block assembly, its object is to solve the problems, such as that existing oil cylinder connection valve block integrated level is low, occupied space is big.The technical scheme is that：A kind of high reliability buffering throttling oil cylinder connection valve block assembly, including oil cylinder connection valve block, transit joint, one-way throttle valve, solenoid electric valve and oil circuit connector；Described three orthogonal mounting surfaces of oil cylinder connection valve block are respectively arranged with fuel feed hole, oil-control hole and oil return hole, one-way throttle valve is installed in fuel feed hole, solenoid electric valve is installed in oil-control hole, oil circuit connector is installed in oil return hole, wherein fuel feed hole is connected with oil-control hole, and oil-control hole is connected with oil return hole.
Description
Technical field
The invention belongs to technical field of hydraulic oil cylinder, and in particular to a kind of high reliability buffering throttling oil cylinder connection valve block group
Part.
Background technology
In existing cylinder system, control cylinder lifting is usually to be controlled by reversal valve, if to realize control oil return speed
Degree then needs integrated speed governing valve in reversal valve, or directly one-way speed-regulating valve is connected in oil return circuit.However, control cylinder
The control valve in circuit is usually independent beyond cylinder system, has a spacing between the control valve and cylinder system of oil inlet cavity
During from, manual control, deviation is easily produced.Such a mode is in the hydraulic system of limited bulk, to realize servo antrol, needs
The more complicated mechanism controls of redesign could realize the control for following action, and volume then can be larger, especially small-sized hydraulic system,
Space shared by control valve is very big, will seriously affect utilization of the equipment to space.Therefore, one-way buffer throttle valve can be concentrated
Oil circuit is controlled on valve block, by solenoid valve come the break-make of control loop, so as to efficiently use the device space.
The content of the invention
It is an object of the invention to solve the problems, such as that existing cylinder system integrated level is low, occupied space is big, and provide one
Kind high reliability buffering throttling oil cylinder connection valve block assembly.
A kind of high reliability buffering throttling oil cylinder connection valve block assembly, it is characterized in that：Including oil cylinder connection valve block,
Transit joint, one-way throttle valve, solenoid electric valve and oil circuit connector；Described three orthogonal mounting surfaces of oil cylinder connection valve block
Fuel feed hole, oil-control hole and oil return hole are respectively arranged with, one-way throttle valve is installed in fuel feed hole, and solenoid electric valve is installed on oil-control
In hole, oil circuit connector is installed in oil return hole, and wherein fuel feed hole is connected with oil-control hole, and oil-control hole is connected with oil return hole.
Further, one-way throttle valve is equipped with throttle bore, and solenoid valve is equipped with control valve opening, and oil circuit connector is equipped with
Oil circuit nipple orifice, the throttle bore are connected with control valve opening, and control valve opening is connected with oil circuit nipple orifice.
Further, the transit joint hole being coaxially disposed with fuel feed hole and the transition in transit joint hole are further included
Connector, the transit joint bore dia are more than oil inlet bore dia.
Further, the connected entrance of the oil circuit connector and solenoid electric valve is equipped with joint groove, and the connected entrance is most
Major diameter is less than the width of joint groove.
Further, cushion block is equipped between the transit joint and one-way throttle valve, the shape of cross section of cushion block is ellipse
Shape and upper and lower ends are in flat, its major semiaxis length is less than the internal diameter of fuel feed hole and is more than throttle bore diameter, semi-minor axis length
Degree is less than throttle bore diameter.
Further, solenoid electric valve and oil cylinder connection valve block thread fitting, between one-way throttle valve and oil cylinder connection valve block
Gap coordinates.
Further, the one-way throttle valve includes valve body and valve deck, spring is arranged with valve body, being equipped with spring can edge
The spring base that valve deck is adjusted axially, adjusts spring base adjustable springs pressure amount, controls choke pressure.
Further, the valve deck of one-way throttle valve and valve seat are tetrafluoride material, make whole one-way throttle valve small volume and less weight.
Compared with prior art, the advantage of the invention is that：
1st, one-way throttle valve, solenoid electric valve and oil circuit connector are integrated in oil cylinder connection valve block three and mutually hung down by the present invention
On straight mounting surface, the control of oil circuit break-make, oil cylinder pressurize and at the uniform velocity release in oil cylinder operational process can be solved at the same time, there is work(
Can be integrated, reliability is high and small the characteristics of.
2nd, the present invention sets cushion block between transit joint and one-way throttle valve, the shape of cross section of cushion block for ellipse and
Upper and lower ends are in flat, its major semiaxis length is less than the internal diameter of fuel feed hole and is more than throttle bore diameter, and semi-minor axis length is small
In throttle bore diameter, it is ensured that throttling reliability.
3rd, oil cylinder connection valve block of the present invention uses duralumin material, and one-way throttle valve valve deck and valve seat use tetrafluoride material, make
Whole oil cylinder connection valve block assembly more small volume and less weight.
Brief description of the drawings
Fig. 1 is cylinder system structure chart；
Fig. 2 is the front view of oil cylinder connection valve block assembly in the embodiment of the present invention；
Fig. 3 is the left view of oil cylinder connection valve block assembly in the embodiment of the present invention；
Fig. 4 is the top view of oil cylinder connection valve block assembly in the embodiment of the present invention；
Fig. 5 is the structure diagram of one-way throttle valve in the embodiment of the present invention.
In figure：1-cylinder part, 2-oil cylinder connection valve block assembly, 3-piston rod, 21-oil cylinder connection valve block, 22-
Transit joint, 24-cushion block, 25-one-way throttle valve, 26-solenoid electric valve, 27-oil circuit connector, 23,28-gasket 211-
Fuel feed hole, 212-oil-control hole, 213-oil return hole, 214-transit joint hole；251-throttle bore；252-valve body；253—
Valve deck；254-spring, 255-spring base；256-valve seat；261-control valve opening；271-oil circuit nipple orifice；272-connector
Groove；273-connected entrance.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail：
Referring to Fig. 2 to Fig. 4, a kind of high reliability buffering throttling oil cylinder connection valve block assembly, including oil cylinder connection valve block 21,
Transit joint 22, one-way throttle valve 25, solenoid electric valve 26 and oil circuit connector 27；The oil cylinder connection valve block 21 is duralumin material
Material, the orthogonal mounting surface of three of them are respectively arranged with fuel feed hole 211, oil-control hole 212 and oil return hole 213, one-way throttle valve
25 are installed in fuel feed hole 211, and solenoid electric valve 26 is installed in oil-control hole 212, and oil circuit connector 27 is installed on oil return hole 213
It is interior, further include the transit joint hole 214 being coaxially disposed with fuel feed hole 211 and the transit joint in transit joint hole 214
22,214 diameter of transit joint hole is more than 211 diameter of fuel feed hole.Wherein fuel feed hole 211 is connected with oil-control hole 212, oil-control hole
212 connect with oil return hole 213.One-way throttle valve 25 is equipped with throttle bore 251, and solenoid valve 26 is equipped with control valve opening 261, oil
Pipeline connector 27 is equipped with oil circuit nipple orifice 271, and the throttle bore 251 is connected with control valve opening 261, control valve opening 261 and oil
Pipeline connector hole 271 is connected.
The connected entrance of the oil circuit connector 27 and solenoid electric valve 26 is equipped with joint groove 272, and the connected entrance 273 is most
Major diameter is less than the width of joint groove 272.
Cushion block 24 is equipped between the transit joint 22 and one-way throttle valve 25, the shape of cross section of cushion block 24 is ellipse
And upper and lower ends are in flat, its major semiaxis length is less than the internal diameter of fuel feed hole 211 and is more than 251 diameter of throttle bore, short by half
Shaft length is less than 251 diameter of throttle bore.
Referring to Fig. 5, the one-way throttle valve includes valve body 252 and valve deck 253, and spring 254, bullet are arranged with valve body 252
The spring base 255 that can be adjusted axially along valve deck 253 is equipped with spring 254, adjusts 255 adjustable springs pressure amount of spring base, control section
Flowing pressure.The valve deck 253 and valve seat 256 of one-way throttle valve are tetrafluoride material, make whole one-way throttle valve small volume and less weight.
Operation principle：Referring to Fig. 1, when cylinder system does lifting action, pressure oil enters valve body, electromagnetism from transit joint 22
It is check valve under 26 normally off of control valve, pressure oil enters oil cylinder, work of the piston rod 3 in pressure oil after entering oil circuit connector 27
With lower stretching；Oil pump electrical machinery fuel cut-off, pressure oil pressurize in oil cylinder under the effect of solenoid electric valve 26, piston rod 3 are kept
Extending action；During Oil pump electrical machinery fuel cut-off, solenoid electric valve 26 is opened, and oily in-cylinder pressure oil backs under weight gravity
Oil cylinder connection valve block 21, promotes 25 inner spool of one-way throttle valve to be moved to the left, and blocks a part for throttle bore 251, limitation pressure
Power oil oil return speed, piston rod 3 are in slow contraction state.
Claims (9)
- A kind of 1. high reliability buffering throttling oil cylinder connection valve block assembly, it is characterised in that：Including oil cylinder connection valve block (21), mistake Cross connector (22), one-way throttle valve (25), solenoid electric valve (26) and oil circuit connector (27)；The oil cylinder connection valve block (21) three A orthogonal mounting surface is respectively arranged with fuel feed hole (211), oil-control hole (212) and oil return hole (213), one-way throttle valve (25) it is installed in fuel feed hole (211), solenoid electric valve (26) is installed in oil-control hole (212), and oil circuit connector (27) is installed on In oil return hole (213), wherein fuel feed hole (211) is connected with oil-control hole (212), and oil-control hole (212) are connected with oil return hole (213).
- 2. high reliability buffering throttling oil cylinder connection valve block assembly according to claim 1, it is characterised in that：One-way throttle Valve (25) is equipped with throttle bore (251), and solenoid electric valve (26) is equipped with control valve opening (261), and oil circuit connector is set on (27) There is oil circuit nipple orifice (271), the throttle bore (251) is connected with control valve opening (261), and control valve opening (261) connects with oil circuit Head bore (271) is connected.
- 3. high reliability buffering throttling oil cylinder connection valve block assembly according to claim 1 or 2, it is characterised in that：Also wrap Include the transit joint hole (214) being coaxially disposed with fuel feed hole (211) and the transit joint (22) in transit joint hole, institute State transit joint hole (214) diameter and be more than fuel feed hole (211) diameter.
- 4. high reliability buffering throttling oil cylinder connection valve block assembly according to claim 3, it is characterised in that：The oil circuit Connector (27) and the connected entrance (273) of solenoid electric valve (26) are equipped with joint groove (272), the maximum of the connected entrance (273) Diameter is less than the width of joint groove (272).
- 5. high reliability buffering throttling oil cylinder connection valve block assembly according to claim 4, it is characterised in that：The transition It is equipped with cushion block (24) between connector (22) and one-way throttle valve (25), the shape of cross section of cushion block (24) is oval and upper and lower two End is in flat, its major semiaxis length is less than the internal diameter of transit joint hole (214) and is more than fuel feed hole (211) diameter, semi-minor axis Length is less than fuel feed hole (211) diameter.
- 6. high reliability buffering throttling oil cylinder connection valve block assembly according to claim 5, it is characterised in that：Electromagnetic Control Valve (26) and oil cylinder connection valve block (21) thread fitting, one-way throttle valve (25) and oil cylinder connection valve block (21) clearance fit.
- 7. high reliability buffering throttling oil cylinder connection valve block assembly according to claim 6, it is characterised in that：It is described unidirectional Throttle valve (25) includes valve body (252), valve deck (253) and valve seat (256), and spring (254), spring are arranged with valve body (252) (254) being equipped with can be along the spring base (255) that valve deck (253) are adjusted axially.
- 8. high reliability buffering throttling oil cylinder connection valve block assembly according to claim 7, it is characterised in that：One-way throttle The valve deck (253) and valve seat (256) of valve are tetrafluoride material.
- 9. high reliability buffering throttling oil cylinder connection valve block assembly according to claim 8, it is characterised in that：The oil cylinder Connection valve block (21) is duralumin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711280742.4A CN108035925A (en) | 2017-12-04 | 2017-12-04 | A kind of high reliability buffering throttling oil cylinder connection valve block assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711280742.4A CN108035925A (en) | 2017-12-04 | 2017-12-04 | A kind of high reliability buffering throttling oil cylinder connection valve block assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108035925A true CN108035925A (en) | 2018-05-15 |
Family
ID=62095728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711280742.4A Pending CN108035925A (en) | 2017-12-04 | 2017-12-04 | A kind of high reliability buffering throttling oil cylinder connection valve block assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035925A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538575A (en) * | 2019-01-17 | 2019-03-29 | 大连诺美液压件有限公司 | Ship hydraulic cylinder with individual event speed governing valve |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB925750A (en) * | 1960-10-26 | 1963-05-08 | Norddeutsche Maschinen Und Sch | Hydraulically-actuated grab control system |
| JPS62110001A (en) * | 1985-11-05 | 1987-05-21 | Kuroda Precision Ind Ltd | Cushion device for fluid pressure cylinder |
| DE4319148A1 (en) * | 1993-06-09 | 1994-12-15 | Rexroth Mannesmann Gmbh | Hydraulic cylinder, in particular for holding down sheet metal on a pair of sheet metal shears |
| JP2008008346A (en) * | 2006-06-28 | 2008-01-17 | Takara Belmont Co Ltd | Pressure compensation fluid control valve and hydraulic circuit using the same |
| JP2009180233A (en) * | 2008-01-29 | 2009-08-13 | Dome Co Ltd | Damping force adjusting mechanism of shock absorber |
| CN101982660A (en) * | 2010-10-29 | 2011-03-02 | 江门市兴江转向器有限公司 | Flow control valve of hydraulic steering system |
| CN201963919U (en) * | 2011-04-14 | 2011-09-07 | 浙江百灵气动科技有限公司 | Automatic drainer |
| JP2012225473A (en) * | 2011-04-22 | 2012-11-15 | Kobelco Contstruction Machinery Ltd | Hydraulic cylinder |
| CN102913382A (en) * | 2012-10-31 | 2013-02-06 | 陕西航天动力高科技股份有限公司 | High-reliability hydraulic motor |
| CN202732516U (en) * | 2012-07-14 | 2013-02-13 | 马鞍山市博威液压机械制造有限责任公司 | External valve controlled type electric-hydraulic pusher |
| CN103225705A (en) * | 2012-12-31 | 2013-07-31 | 苏州维赛克阀门检测技术有限公司 | Throttling device for oil pipe connector of oil cylinder |
| CN203430906U (en) * | 2013-06-06 | 2014-02-12 | 王健 | Hydraulic buffering driving and buffering braking device |
| CN104454738A (en) * | 2014-12-22 | 2015-03-25 | 浙江海宏液压科技股份有限公司 | Agriculture machine control valve |
| CN104481952A (en) * | 2014-12-09 | 2015-04-01 | 中联重科股份有限公司 | One-way throttling valve and lifting oil cylinder control system |
| CN205277981U (en) * | 2016-01-08 | 2016-06-01 | 宁波中天联合机电制造有限公司 | Hydro -cylinder under hydraulic lifting platform's of lifting |
| CN106151160A (en) * | 2015-04-28 | 2016-11-23 | 徐工集团工程机械股份有限公司 | There is hydraulic jack and the excavator of pooling feature |
| CN205977887U (en) * | 2016-08-30 | 2017-02-22 | 东莞积信制造有限公司 | One -way buffering hydraulic cylinder |
| CN106764009A (en) * | 2017-02-07 | 2017-05-31 | 苏州道森钻采设备股份有限公司 | A kind of choke valve |
| JP2017180608A (en) * | 2016-03-29 | 2017-10-05 | 株式会社ショーワ | Valve mechanism, attenuation force generation device and shock absorber |
| CN207715456U (en) * | 2017-12-04 | 2018-08-10 | 陕西航天动力高科技股份有限公司 | A kind of high reliability buffering throttling oil cylinder connection valve block assembly |
-
2017
- 2017-12-04 CN CN201711280742.4A patent/CN108035925A/en active Pending
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB925750A (en) * | 1960-10-26 | 1963-05-08 | Norddeutsche Maschinen Und Sch | Hydraulically-actuated grab control system |
| JPS62110001A (en) * | 1985-11-05 | 1987-05-21 | Kuroda Precision Ind Ltd | Cushion device for fluid pressure cylinder |
| DE4319148A1 (en) * | 1993-06-09 | 1994-12-15 | Rexroth Mannesmann Gmbh | Hydraulic cylinder, in particular for holding down sheet metal on a pair of sheet metal shears |
| JP2008008346A (en) * | 2006-06-28 | 2008-01-17 | Takara Belmont Co Ltd | Pressure compensation fluid control valve and hydraulic circuit using the same |
| JP2009180233A (en) * | 2008-01-29 | 2009-08-13 | Dome Co Ltd | Damping force adjusting mechanism of shock absorber |
| CN101982660A (en) * | 2010-10-29 | 2011-03-02 | 江门市兴江转向器有限公司 | Flow control valve of hydraulic steering system |
| CN201963919U (en) * | 2011-04-14 | 2011-09-07 | 浙江百灵气动科技有限公司 | Automatic drainer |
| JP2012225473A (en) * | 2011-04-22 | 2012-11-15 | Kobelco Contstruction Machinery Ltd | Hydraulic cylinder |
| CN202732516U (en) * | 2012-07-14 | 2013-02-13 | 马鞍山市博威液压机械制造有限责任公司 | External valve controlled type electric-hydraulic pusher |
| CN102913382A (en) * | 2012-10-31 | 2013-02-06 | 陕西航天动力高科技股份有限公司 | High-reliability hydraulic motor |
| CN103225705A (en) * | 2012-12-31 | 2013-07-31 | 苏州维赛克阀门检测技术有限公司 | Throttling device for oil pipe connector of oil cylinder |
| CN203430906U (en) * | 2013-06-06 | 2014-02-12 | 王健 | Hydraulic buffering driving and buffering braking device |
| CN104481952A (en) * | 2014-12-09 | 2015-04-01 | 中联重科股份有限公司 | One-way throttling valve and lifting oil cylinder control system |
| CN104454738A (en) * | 2014-12-22 | 2015-03-25 | 浙江海宏液压科技股份有限公司 | Agriculture machine control valve |
| CN106151160A (en) * | 2015-04-28 | 2016-11-23 | 徐工集团工程机械股份有限公司 | There is hydraulic jack and the excavator of pooling feature |
| CN205277981U (en) * | 2016-01-08 | 2016-06-01 | 宁波中天联合机电制造有限公司 | Hydro -cylinder under hydraulic lifting platform's of lifting |
| JP2017180608A (en) * | 2016-03-29 | 2017-10-05 | 株式会社ショーワ | Valve mechanism, attenuation force generation device and shock absorber |
| CN205977887U (en) * | 2016-08-30 | 2017-02-22 | 东莞积信制造有限公司 | One -way buffering hydraulic cylinder |
| CN106764009A (en) * | 2017-02-07 | 2017-05-31 | 苏州道森钻采设备股份有限公司 | A kind of choke valve |
| CN207715456U (en) * | 2017-12-04 | 2018-08-10 | 陕西航天动力高科技股份有限公司 | A kind of high reliability buffering throttling oil cylinder connection valve block assembly |
Non-Patent Citations (2)
| Title |
|---|
| 张日红;杜群贵;: "基于AMESIM的高速气缸新型缓冲装置缓冲性能研究", 振动与冲击, no. 21, 15 November 2017 (2017-11-15) * |
| 张福波;王贵桥;焦明木;李楠;: "具有阀控泄油补偿的等容泵控液压同步系统", 东北大学学报(自然科学版), no. 07, 15 July 2013 (2013-07-15) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538575A (en) * | 2019-01-17 | 2019-03-29 | 大连诺美液压件有限公司 | Ship hydraulic cylinder with individual event speed governing valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103438050B (en) | The cylinder apparatus cushioned after a kind of off-load | |
| CN103742473B (en) | Split type pilot load control valve | |
| CN102705288A (en) | Anti-shaking balance valve, telescopic control loop of hydraulic cylinder and hydraulic device | |
| CN107143540B (en) | Digital load sensing hydraulic control system and method | |
| CN101929481A (en) | Three-way pressure compensating valve for hydraulic energy-saving system | |
| CN104989690B (en) | Overload relief valve | |
| CN108035925A (en) | A kind of high reliability buffering throttling oil cylinder connection valve block assembly | |
| CN207715456U (en) | A kind of high reliability buffering throttling oil cylinder connection valve block assembly | |
| CN204693008U (en) | A kind of Decompression valves | |
| CN206017290U (en) | Load-sensitive axial plunger pump | |
| CN203836279U (en) | Built-in pressure reducing valve | |
| CN203532367U (en) | Multi-gear power control variable displacement piston pump | |
| CN203655762U (en) | Split type pilot load control valve | |
| CN101782089B (en) | Hydraulic oil cylinder with magnetic self-locking and magnetic auxiliary driving structure | |
| CN203796643U (en) | Adjustable throttling hydraulic lock of coal mining machine | |
| CN104420924A (en) | Continuously-adjustable adjustment method and device for valve lift of engine | |
| WO2016203332A1 (en) | Hydraulic pressure controller and method for manufacturing a similar hydraulic pressure controller | |
| CN206458760U (en) | A kind of buffer plunger structure | |
| CN106762914B (en) | A kind of low-flow switch control driver | |
| CN108799252A (en) | The adjustable hydraulic cylinder of bidirectional buffering speed | |
| CN101514734B (en) | Air pressure transmitting type magneto-rheological damper | |
| CN204312457U (en) | Oil recovery cylinder cushion device | |
| CN208417126U (en) | Clamping cylinder | |
| CN202561222U (en) | Hydraulic-control one-way valve with controllable-size valve port | |
| CN105065360A (en) | Constant-power control device and pressure variable control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190902 Address after: 710100 Fourth Floor of Metering Building 271 Aerospace West Road, Xi'an National Civil Aerospace Industry Base, Shaanxi Province Applicant after: XI'AN HANGLI TECHNOLOGY CO., LTD. Address before: 710077 No. 78 Jinye Road, Xi'an High-tech Zone, Shaanxi Province Applicant before: Shanxi Aero-Space Power Hi-Tech Co., Ltd. |