CN101865173B - Hydraulic motor control valve - Google Patents
Hydraulic motor control valve Download PDFInfo
- Publication number
- CN101865173B CN101865173B CN2010102325866A CN201010232586A CN101865173B CN 101865173 B CN101865173 B CN 101865173B CN 2010102325866 A CN2010102325866 A CN 2010102325866A CN 201010232586 A CN201010232586 A CN 201010232586A CN 101865173 B CN101865173 B CN 101865173B
- Authority
- CN
- China
- Prior art keywords
- valve
- main
- control
- hydraulic motor
- liquid
- 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.)
- Active
Links
Images
Abstract
The invention relates to a hydraulic motor control valve. The hydraulic motor control valve comprises a two-way locking loop, a control loop, a control assembly and a main valve body, wherein the control loop controls the action of a brake of a hydraulic motor; the control assembly consists of a main valve core and a pilot valve which controls the main valve core to feed or return liquid; two main oil ports are working ports of the main valve core respectively; the pilot valve and the liquid inlet of the main valve core are respectively communicated with a main liquid inlet; the pilot valve and the liquid returning port of the main valve core are respectively communicated with a main liquid returning port; and a working port of the pilot valve is communicated with a control port of a corresponding main valve core. The invention provides a hydraulic motor control valve which is controlled by a small moment and can restore the brake to a braking state rapidly.
Description
Technical field
The present invention relates to a kind of hydraulic motor control valve, specifically, be a kind of use in the tight catenary system of scraper conveyor, control oil hydraulic motor clockwise and anticlockwise action hydraulic motor control valve.
Background technique
Oil hydraulic motor and hydraulic motor control valve Chang Yitong are used for various engineering equipments; The control of oil hydraulic motor being rotated and braking through hydraulic motor control valve; Thereby reach the purpose of the various engineering equipment actions of control; Chinese patent document CN101649849A has proposed a kind of brake circuit of hydraulic motor; It comprises brake circuit, and it also comprises the control loop that has switching-over and the effect of locking oil circuit concurrently that is made up of 3-position-3-way pilot operated directional control valve, one-way valve one, one-way valve two, one-way valve seven, one-way valve eight.This existing technology can guarantee that at first power oil can drive hydraulic slave motor run reliably; Then, in the loop, be provided with the control loop that has switching-over and the effect of locking oil circuit concurrently, realized automatically locking of loop, played the effect that when shutting down, also can protect pump, hydraulic element etc.; At the uniform velocity walk when this existing technology can make the crawler crane descending, can under action of gravity, not give it the gun, avoid occurring out-of-control phenomenon.In use also there is following shortcoming in this existing technology: 1, do not put down in writing through control in this existing technology towards A hydraulic fluid port (B hydraulic fluid port) interior fuel feeding or oil return; Thereby realize that oil hydraulic motor just changes; The control unit of counter-rotating and braking, and the normal control unit that uses is a three-position four-way valve in the present existing technology, manual three-position four-way valve is being used for the bigger occasion of load; As when being used for the control of the scraper conveyor under the mine; Regular meeting the handle place occurs and need use very big moment just can break the problem that active handle is realized control off with the fingers and thumb, and the three-position four-way valve of electromagnetism is inappropriate for and applies under the space-constrained mine, has potential safety hazard easily; 2, in this existing technology; Break can not return to braking state rapidly, mainly is because the liquid in the break must be through reduction valve, shuttle valve; Discharge by main liquid entering hole at last, in the process of whole discharge, can meet resistance and cause liquid not discharge rapidly; 3, this control loop that has switching-over and the effect of locking oil circuit concurrently of the prior art is made up of 3-position-3-way pilot operated directional control valve, one-way valve one, one-way valve two, one-way valve seven, one-way valve eight; Complex structure not only; And it is bigger to take up room, and has reduced the compactedness of whole brake circuit.
Summary of the invention
For this reason; Technical problem to be solved by this invention be hydraulic motor control valve of the prior art in that to be used for load bigger; It is fashionable to need with the field of manually control; Regular meeting the handle place occurs and need use very big moment just can break the problem that active handle is realized control off with the fingers and thumb, and a kind of hydraulic motor control valve of little Torque Control is provided.
A kind of hydraulic motor control valve that can make break return to braking state rapidly further is provided.
For solving the problems of the technologies described above, a kind of hydraulic motor control valve of the present invention comprises
The reversible lock loop circuit; Two liquid entering holes of said reversible lock loop circuit are communicated with the main hydraulic fluid port of two feed flows/time liquid respectively; Two working holes of said reversible lock loop circuit are communicated with the just commentaries on classics working hole and the counter-rotating working hole of oil hydraulic motor respectively; When said main hydraulic fluid port stopped feed flow, said reversible lock loop circuit can lock the liquid in the oil hydraulic motor;
Brake circuit; Said brake circuit comprises shuttle valve; Two liquid entering holes of said shuttle valve are communicated with two said main hydraulic fluid ports respectively, and the liquid outlet of said shuttle valve is communicated with said break working hole, through feed flow in the break of oil hydraulic motor or make the outside drainage of break control the action of said break;
Control unit, said control unit through controlling two said main hydraulic fluid ports feed flow or return the braking that liquid comes the control brake device, and the clockwise and anticlockwise of oil hydraulic motor;
Main valve body; Form in the said main valve body said reversible lock loop circuit is set; The inner chamber of said brake circuit and said control unit; And form on the relevant position of said main valve body outer wall and be fit to the break working interface be connected with the break working hole of oil hydraulic motor, with oil hydraulic motor just change that just changing a job that hydraulic fluid port, counter-rotating hydraulic fluid port be connected made interface, the working interface that reverses, and the main feed liquor interface that is communicated with fuel tank, lead back liquid interface;
Said control unit is made up of the pilot valve that main valve plug and control main valve plug advance, return liquid; Two said main hydraulic fluid ports are respectively the working hole of said main valve plug; The liquid entering hole of said pilot valve and said main valve plug is communicated with main liquid entering hole respectively; The liquid return hole of said pilot valve and said main valve plug is communicated with main liquid return hole respectively, and the working hole of said pilot valve is communicated with the control mouth of corresponding said main valve plug.
Above-mentioned hydraulic motor control valve, said control unit has two covers, and the said pilot valve of said control unit is the two-position three way manually operated valve, and said main valve plug is the two-position three way hydraulic control valve, and two said main hydraulic fluid ports are respectively the working hole of two said main valve plugs.
Above-mentioned hydraulic motor control valve; Also comprise a single control mangetic core assembly on the said brake circuit; Said single control mangetic core assembly is the two-position three way hydraulic control valve; The liquid entering hole of said single control mangetic core assembly and control mouth communicate with the said liquid outlet of said shuttle valve; The working hole of said single control mangetic core assembly communicates with said break working hole, and the liquid return hole of said single control mangetic core assembly directly communicates with the drainage case of atmosphere, enters in the said drainage case through the leakage hole that is molded on the said main valve body outer wall relevant position.
Above-mentioned hydraulic motor control valve, said reversible lock loop circuit is the double hydraulic control one-way valve.
Above-mentioned hydraulic motor control valve is provided with pressure gauge between the working hole of said single control mangetic core assembly and the working hole of said break, forms pressure gauge connection on the relevant position of said main valve body outer wall.
Above-mentioned hydraulic motor control valve is provided with filter between the liquid entering hole of said pilot valve and the said main liquid entering hole, is provided with one-way valve between the liquid return hole of said pilot valve and the said main liquid return hole, also is provided with safety valve on the said main liquid entering hole.
Technique scheme of the present invention is compared existing technology and is had the following advantages; 1, the control unit that constitutes of pilot valve and main valve plug, in that to be used for load bigger, and manual control fashionable; Easily thereby operating grip realization is effortlessly just changeed-is braked, the process of counter-rotating-braking; 2, the liquid return hole of single control mangetic core assembly directly communicates with the drainage case of atmosphere, non-resistance when making back the liquid discharge of liquid, thus the break that can realize oil hydraulic motor returns to braking state rapidly, has reduced the potential safety hazard that exists because of braking retardation.
Description of drawings
For content of the present invention is more clearly understood, below according to a particular embodiment of the invention and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 is the schematic diagram of hydraulic motor control valve of the present invention;
Fig. 2 is the plan view of hydraulic motor control valve of the present invention;
Fig. 3 is the worm's eye view of hydraulic motor control valve of the present invention;
Fig. 4 is the plan view of hydraulic motor control valve of the present invention.
Reference character is expressed as among the figure: 1-oil hydraulic motor, 2-break, 3-shuttle valve, 4-main valve body, 5-break working interface, 6-are just changing a job and are making interface, 7-counter-rotating working interface, 8-master's feed liquor interface, 9-master and return liquid interface, 10-main valve plug, 11-pilot valve, the single control of 12-mangetic core assembly, 13-double hydraulic control one-way valve, 14-pressure gauge, 15-pressure gauge connection, 16-filter, 17-one-way valve, 18-safety valve, 19-leakage hole.
Embodiment
To shown in Figure 4, a kind of hydraulic motor control valve of present embodiment comprises the reversible lock loop circuit like Fig. 1, brake circuit, and control unit, main valve body 4, in the present embodiment, said reversible lock loop circuit is a double hydraulic control one-way valve 13.Two liquid entering holes of said double hydraulic control one-way valve 13 are communicated with the main hydraulic fluid port of two feed flows/time liquid respectively; Two working holes of said double hydraulic control one-way valve 13 are communicated with the just commentaries on classics working hole and the counter-rotating working hole of oil hydraulic motor 1 respectively; When said main hydraulic fluid port stopped feed flow, said double hydraulic control one-way valve 13 can lock the liquid in the oil hydraulic motor 1; Said brake circuit comprises shuttle valve 3; Two liquid entering holes of said shuttle valve 3 are communicated with two said main hydraulic fluid ports respectively; The liquid outlet of said shuttle valve 3 is communicated with said break 2 working holes, through feed flows in the break of oil hydraulic motor 12 or make break 2 outside drainages control said break 2 to move; Said control unit through controlling two said main hydraulic fluid ports feed flow or return the braking that liquid comes control brake device 2, and the clockwise and anticlockwise of oil hydraulic motor 1; Form in the said main valve body 4 said double hydraulic control one-way valve 13 is set; The inner chamber of said brake circuit and said control unit; And form the suitable break working interface 5 that is connected with break 2 working holes of oil hydraulic motor 1 on the relevant position of said main valve body 4 outer walls; With oil hydraulic motor 1 just change hydraulic fluid port, just changing a job of being connected of counter-rotating hydraulic fluid port made interface 6, counter-rotating working interface 7, and the main feed liquor interface 8 that is communicated with fuel tank, leads back liquid interface 9; Said control unit is made up of the pilot valve 11 that main valve plug 10 and control main valve plug 10 advance, return liquid; Two said main hydraulic fluid ports are respectively the working hole of said main valve plug 10; The liquid entering hole of said pilot valve 11 and said main valve plug 10 is communicated with main liquid entering hole respectively; The liquid return hole of said pilot valve 11 and said main valve plug 10 is communicated with main liquid return hole respectively, and the working hole of said pilot valve 11 is communicated with the control mouth of corresponding said main valve plug 10.In the present embodiment, said control unit has two covers, and the said pilot valve of said control unit is the two-position three way manually operated valve, and said main valve plug is the two-position three way hydraulic control valve, and two said main hydraulic fluid ports are respectively the working hole of two said main valve plugs 10.The control unit that said pilot valve 11 and said main valve plug 10 constitute, in that to be used for load bigger, and manual control fashionable, can be easily effortlessly operating grip realize just changeing-brake the process of counter-rotating-braking.Also comprise a single control mangetic core assembly 12 on the said brake circuit; Said single control mangetic core assembly 12 is the two-position three way hydraulic control valve; The liquid entering hole of said single control mangetic core assembly 12 and control mouth communicate with the said liquid outlet of said shuttle valve 3; The working hole of said single control mangetic core assembly 12 communicates with said break 2 working holes; The liquid return hole of said single control mangetic core assembly 12 directly communicates with the drainage case of atmosphere, enters in the said drainage case through the leakage hole 19 that is molded on the said main valve body 4 outer wall relevant positions.The liquid return hole of said single control mangetic core assembly 12 directly communicates with the drainage case of atmosphere; Non-resistance when making back the liquid discharge of liquid; Thereby the break that can realize oil hydraulic motor returns to braking state rapidly, has reduced the potential safety hazard that exists because of braking retardation.Be provided with pressure gauge 14 between the working hole of said single control mangetic core assembly 12 and the working hole of said break 2, form pressure gauge connection 15 on the relevant position of said main valve body 4 outer walls.Be provided with filter 16 between the liquid entering hole of said pilot valve 11 and the said main liquid entering hole, be provided with one-way valve 17 between the liquid return hole of said pilot valve 11 and the said main liquid return hole, also be provided with safety valve 18 on the said main liquid entering hole.
The working procedure of hydraulic motor control valve of the present invention:
(1) control the working procedure that oil hydraulic motor just changes-brakes:
When oil hydraulic motor 1 need just change, handle of pulling that cover pilot valve 11 that control just changeing was to just changeing self-locking position, and first drain gets into the control mouth of main valve plug 10, thereby made the admission chamber and the valve core channel connection of main valve plug 10.The highly pressurised liquid of main liquid entering hole p is gone out from valve core channel through the admission chamber of main valve plug 10, in valve core channel, is divided into two-way liquid.One the road enters into the liquid entering hole of shuttle valve 3 one ends; The steel ball of shuttle valve 3 is lived the liquid entering hole of the other end at the effect lower seal of highly pressurised liquid; Highly pressurised liquid is entered into the admission chamber of single control mangetic core assembly 12 by shuttle valve 3 liquid outlets; Highly pressurised liquid gets into the control mouth of single control mangetic core assembly 12 simultaneously, makes the admission chamber of single control mangetic core assembly and valve core channel be communicated with.Highly pressurised liquid gets in the break of oil hydraulic motor through the admission chamber of single control mangetic core assembly 12, makes the oil hydraulic motor break separate, thereby but makes oil hydraulic motor be in working state.And another road highly pressurised liquid enters into the admission chamber of one of them Pilot operated check valve of just changeing of control of double hydraulic control one-way valve 13, the Pilot operated check valve that highly pressurised liquid is just changeing through control go out the just commentaries on classics hydraulic fluid port that sap cavity gets into oil hydraulic motor; Simultaneously high pressure liquid enters into the Pilot operated check valve control mouthful of another control inversion of double hydraulic control one-way valve 13, make this control inversion Pilot operated check valve go out sap cavity and admission chamber is in connected state.Because the break of oil hydraulic motor 1 is opened, the highly pressurised liquid that the entering oil hydraulic motor is just changeing hydraulic fluid port makes oil hydraulic motor 1 carry out the forward running.And the liquid of reverse hydraulic fluid port goes out the UNICOM of sap cavity to admission chamber by the Pilot operated check valve through control inversion, enters into the liquid return hole of oil hydraulic motor integrated control valve.
After oil hydraulic motor 1 is accomplished turn and done, need stop operating, turn back the handle of the pilot valve 11 that control just changeing, make it be in off working state.Elder generation's drain stops to main valve plug 10 control chamber feed flows, and main valve plug 11 resets under the effect of spring and hydraulic coupling, and spool and valve seat are in sealing state, and highly pressurised liquid stops feed flow.Single control mangetic core assembly 12 control chamber highly pressurised liquids stop feed flow, and at the active force of spring force and hydraulic coupling, spool and valve seat are in sealing state.This moment, break was communicated with the sap cavity that returns of single control mangetic core assembly 11, returned liquid liquid and discharged from leakage hole.Simultaneously, the spool of double hydraulic control one-way valve 12 resets under the effect of spring force and hydraulic coupling, and so far break recovers the braking to oil hydraulic motor 1, makes oil hydraulic motor 1 be in the state of stopping operating.
(2) working procedure of control oil hydraulic motor counter-rotating-braking:
When needs oil hydraulic motor 1 counter-rotating, the handle of pilot valve 11 of pulling another set of control inversion is to the self-locking position that reverses, and working principle is with above-mentioned.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to mode of execution.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (6)
1. a hydraulic motor control valve comprises
The reversible lock loop circuit; Two liquid entering holes of said reversible lock loop circuit are communicated with the main hydraulic fluid port of two feed flows/time liquid respectively; Two working holes of said reversible lock loop circuit are communicated with the just commentaries on classics working hole and the counter-rotating working hole of oil hydraulic motor (1) respectively; When said main hydraulic fluid port stopped feed flow, said reversible lock loop circuit can lock the liquid in the oil hydraulic motor (1);
Brake circuit; Said brake circuit comprises shuttle valve (3); Two liquid entering holes of said shuttle valve (3) are communicated with two said main hydraulic fluid ports respectively; The liquid outlet of said shuttle valve (3) is communicated with break (2) working hole, through towards the interior feed flow of break (2) of oil hydraulic motor (1) or make break (2) outwards drainage control said break (2) action;
Control unit, said control unit through controlling two said main hydraulic fluid ports feed flow or return the braking that liquid comes control brake device (2), and the clockwise and anticlockwise of oil hydraulic motor (1);
Main valve body (4); Form in the said main valve body (4) said reversible lock loop circuit is set; The inner chamber of said brake circuit and said control unit; And form the suitable break working interface (5) that is connected with break (2) working hole of oil hydraulic motor (1) on the relevant position of said main valve body (4) outer wall; Just change just changing a job that working hole, said counter-rotating working hole be connected with oil hydraulic motor (1) said and making interface (6), counter-rotating working interface (7), and the main feed liquor interface (8) that is communicated with fuel tank, leading back liquid interface (9);
It is characterized in that:
Said control unit is made up of the pilot valve (11) that main valve plug (10) and control main valve plug (10) advance, return liquid; Two said main hydraulic fluid ports are respectively the working hole of said main valve plug (10); The liquid entering hole of said pilot valve (11) and said main valve plug (10) is communicated with said main feed liquor interface (8) respectively; The liquid return hole of said pilot valve (11) and said main valve plug (10) returns liquid interface (9) with said master respectively and is communicated with, and the working hole of said pilot valve (11) is communicated with the control mouth of corresponding said main valve plug (10).
2. hydraulic motor control valve according to claim 1; It is characterized in that: said control unit has two covers; And the said pilot valve of said control unit is the two-position three way manually operated valve; Said main valve plug is the two-position three way hydraulic control valve, and two said main hydraulic fluid ports are respectively the working hole of two said main valve plugs (10).
3. hydraulic motor control valve according to claim 1 and 2; It is characterized in that: also comprise a single control mangetic core assembly (12) on the said brake circuit; Said single control mangetic core assembly (12) is the two-position three way hydraulic control valve; The liquid entering hole of said single control mangetic core assembly (12) and control mouth communicate with the said liquid outlet of said shuttle valve (3); The working hole of said single control mangetic core assembly (12) communicates with said break (2) working hole, and the liquid return hole of said single control mangetic core assembly (12) directly communicates with the drainage case of atmosphere, goes in the said drainage case through the leakage hole (19) that is molded on said main valve body (4) the outer wall relevant position.
4. hydraulic motor control valve according to claim 3 is characterized in that: said reversible lock loop circuit is double hydraulic control one-way valve (13).
5. hydraulic motor control valve according to claim 4; It is characterized in that: be provided with pressure gauge (14) between the working hole of said single control mangetic core assembly (12) and the working hole of said break (2), form pressure gauge connection (15) on the relevant position of said main valve body (4) outer wall.
6. hydraulic motor control valve according to claim 5; It is characterized in that: be provided with filter (16) between the liquid entering hole of said pilot valve (11) and the said main feed liquor interface (8); The liquid return hole of said pilot valve (11) and said master return and are provided with one-way valve (17) between the liquid interface (9), also are provided with safety valve (18) on the said main feed liquor interface (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102325866A CN101865173B (en) | 2010-07-21 | 2010-07-21 | Hydraulic motor control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102325866A CN101865173B (en) | 2010-07-21 | 2010-07-21 | Hydraulic motor control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101865173A CN101865173A (en) | 2010-10-20 |
| CN101865173B true CN101865173B (en) | 2012-11-21 |
Family
ID=42957038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102325866A Active CN101865173B (en) | 2010-07-21 | 2010-07-21 | Hydraulic motor control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101865173B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654255B (en) * | 2017-10-11 | 2020-06-09 | 中国航发西安动力控制科技有限公司 | Bidirectional pilot pressure regulating valve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103931A (en) * | 1985-05-03 | 1986-10-29 | 维克斯公司 | Actuating unit |
| CN1183137A (en) * | 1995-03-24 | 1998-05-27 | 株式会社小松制作所 | Driving device for hydraulic motor |
| CN1766350A (en) * | 2004-10-29 | 2006-05-03 | 索尔-丹福斯股份有限公司 | Valve arrangement |
| CN100387851C (en) * | 2004-05-04 | 2008-05-14 | 沃尔沃建造设备控股（瑞典）有限公司 | Hydraulic control valve having holding valve with improved response characteristics |
| CN101251133A (en) * | 2008-03-19 | 2008-08-27 | 康凤明 | Novel hydraulic motor transmission control valve group |
| CN201228364Y (en) * | 2008-06-25 | 2009-04-29 | 三一重型装备有限公司 | Hydraulic device for controlling mechanical boring machine star wheel movement and walking motor fill oil |
| CN201309736Y (en) * | 2008-09-27 | 2009-09-16 | 三一重型装备有限公司 | Motor tension chain control system |
| CN101649849A (en) * | 2008-08-14 | 2010-02-17 | 陈庆桐 | Brake circuit of hydraulic motor |
| CN201714732U (en) * | 2010-07-21 | 2011-01-19 | 胡斌杰 | Hydraulic motor control valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62200004A (en) * | 1986-02-26 | 1987-09-03 | Yutani Juko Kk | Control circuit of hydraulic motor for driving rotating structure |
| JPH0218139A (en) * | 1988-07-05 | 1990-01-22 | Komatsu Ltd | Parking brake controlling device for traveling hydraulic motor |
| JP2000240789A (en) * | 1999-02-18 | 2000-09-05 | Mitsubishi Heavy Ind Ltd | Power transmitting device for vehicle |
-
2010
- 2010-07-21 CN CN2010102325866A patent/CN101865173B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103931A (en) * | 1985-05-03 | 1986-10-29 | 维克斯公司 | Actuating unit |
| CN1183137A (en) * | 1995-03-24 | 1998-05-27 | 株式会社小松制作所 | Driving device for hydraulic motor |
| CN100387851C (en) * | 2004-05-04 | 2008-05-14 | 沃尔沃建造设备控股（瑞典）有限公司 | Hydraulic control valve having holding valve with improved response characteristics |
| CN1766350A (en) * | 2004-10-29 | 2006-05-03 | 索尔-丹福斯股份有限公司 | Valve arrangement |
| CN101251133A (en) * | 2008-03-19 | 2008-08-27 | 康凤明 | Novel hydraulic motor transmission control valve group |
| CN201228364Y (en) * | 2008-06-25 | 2009-04-29 | 三一重型装备有限公司 | Hydraulic device for controlling mechanical boring machine star wheel movement and walking motor fill oil |
| CN101649849A (en) * | 2008-08-14 | 2010-02-17 | 陈庆桐 | Brake circuit of hydraulic motor |
| CN201309736Y (en) * | 2008-09-27 | 2009-09-16 | 三一重型装备有限公司 | Motor tension chain control system |
| CN201714732U (en) * | 2010-07-21 | 2011-01-19 | 胡斌杰 | Hydraulic motor control valve |
Non-Patent Citations (3)
| Title |
|---|
| JP平2-18139A 1990.01.22 |
| JP昭62-200004A 1987.09.03 |
| JP特开2000-240789A 2000.09.05 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101865173A (en) | 2010-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104011406A (en) | Hydraulic system | |
| CN102756979B (en) | Crane and hydraulic control system for telescopic mechanism of crane | |
| WO2013059250A1 (en) | Hydraulic system | |
| CN108361372A (en) | Opening door of vehicle using pressure sensor, master controller forbids running gear | |
| US20140165549A1 (en) | Hydraulic system having multiple closed loop circuits | |
| US8919114B2 (en) | Closed-loop hydraulic system having priority-based sharing | |
| WO2012129042A1 (en) | Regeneration circuit | |
| CN105084261A (en) | Dual-pump confluent energy-saving type forklift hydraulic system | |
| CN103950850A (en) | Revolving platform hydraulic braking system of automobile crane | |
| CN105545843A (en) | Hydraulic control system of self-propelled hydraulic power traction vehicle | |
| CN101865173B (en) | Hydraulic motor control valve | |
| CN205035044U (en) | Energy -saving fork truck hydraulic system in double pump confluence | |
| CN201714732U (en) | Hydraulic motor control valve | |
| CN109017981A (en) | Walking machine and its hydraulic steering system | |
| CN103015483B (en) | Time delay brake system of hydraulic slewing device and engineering machine | |
| CN104176664A (en) | Hydraulic system for preventing forward running of telescopic arm of crane and crane | |
| CN203822728U (en) | Material door opening hydraulic system and distributor | |
| CN206159145U (en) | Hoist davit cylinder control device | |
| CN108915007A (en) | A kind of excavator swing arm dipper energy conserving system | |
| CN210416723U (en) | Steering and braking system and road roller | |
| CN108382200A (en) | Non-rice habitats machine-walking 4 wheel driven electrohydraulic control system | |
| CN204980960U (en) | Hydraulic control system and hoist with from discernment gyration protect function | |
| CN207749563U (en) | Combination valve and loading arm hydraulic system of working | |
| CN207712135U (en) | A kind of steering of wide dumper | |
| CN107061388B (en) | It is a kind of to prevent descending from shaking and turning to the lifting working platform Ye Qu mechanisms being emptied |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ANHUI FAN ER ELECTROHYDRAULIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HU BINJIE Effective date: 20121205 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325604 WENZHOU, ZHEJIANG PROVINCE TO: 325600 WENZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121205 Address after: 325600 second industrial zone, seven Li port, Zhejiang, Yueqing, China Patentee after: Anhui Fan'er Electrohydraulic Technology Co., Ltd. Address before: 325604 second industrial zone, seven Li port, Zhejiang, Yueqing, China Patentee before: Hu Binjie |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20101020 Assignee: Valve Machinery Group Co., Ltd. Assignor: Anhui Fan'er Electrohydraulic Technology Co., Ltd. Contract record no.: 2012340000393 Denomination of invention: Hydraulic motor control valve Granted publication date: 20121121 License type: Exclusive License Record date: 20121231 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| ASS | Succession or assignment of patent right |
Owner name: VALVE MACHINERY GROUP CO., LTD. Free format text: FORMER OWNER: ANHUI FAN ER ELECTROHYDRAULIC TECHNOLOGY CO., LTD. Effective date: 20130416 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325600 WENZHOU, ZHEJIANG PROVINCE TO: 241100 WUHU, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130416 Address after: 241100 Anhui Province, Wuhu City Economic Development Zone, Wuhu Patentee after: Valve Machinery Group Co., Ltd. Address before: 325600 second industrial zone, seven Li port, Zhejiang, Yueqing, China Patentee before: Anhui Fan'er Electrohydraulic Technology Co., Ltd. |