CN103591282A - Engineering machinery walking speed controlling and switching valve - Google Patents
Engineering machinery walking speed controlling and switching valve Download PDFInfo
- Publication number
- CN103591282A CN103591282A CN201310607396.1A CN201310607396A CN103591282A CN 103591282 A CN103591282 A CN 103591282A CN 201310607396 A CN201310607396 A CN 201310607396A CN 103591282 A CN103591282 A CN 103591282A
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- China
- Prior art keywords
- cavity
- spool
- speed
- switching valve
- engineering machinery
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
- F16H61/0265—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
- F16H61/0276—Elements specially adapted for hydraulic control units, e.g. valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H2061/0012—Transmission control for optimising power output of driveline
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an engineering machinery walking speed controlling and switching valve. Oil inlet channels and oil outlet channels of two motors are formed in the same one valve body. By means of the switching valve structure design and the system matching design, the speed can be switched and adjusted on the work condition where an actuating device can normally work and is not shut down. Thus, a speed regulating range of engineering machinery hydraulic speed control is widened, and stepless speed change is achieved. The engineering machinery walking speed controlling and switching valve is simple in engineering machinery speed switching opening, stable in speed switching, free of impact in speed switching and capable of prolonging the service life of a hydraulic system. The engineering machinery walking speed controlling and switching valve integrates a serial connection function and a parallel connection function of a hydraulic motor system, so that the integration level is high. Meanwhile, a safety valve can be integrated on the switching valve to achieve a safety protection function of a system work circuit.
Description
Technical field
The present invention relates to mechanical field, especially a kind of moving speed of engineering machine is controlled switching valve.
Background technique
At present, moving speed of engineering machine control mode has mechanical transmission, hydraudynamic drive, hydraulic transmission and combining form thereof etc.Although mechanical transmission efficiency is high, speed regulation range is little and can only realize a grade transmission; Consider Economy, the general kind of drive of mating with mechanical transmission that adopts of hydraudynamic drive, its starting torque is large, but efficient district is narrow; The hydraulic driving stepless change of vehicle has become an important development trend of modern project machinery.Hydraulic transmission can be combined with mechanical gear box and inter-wheel differential, but can not thoroughly improve performance and the traction power characteristic of mechanical running mechanism; Hydraulic transmission, can realize stepless change, but speed adjustable range is little, can not obtain larger travelling speed; Hydraulic transmission coordinates wheel-side reduction device, can expand its speed adjustable range, but drive system structure is complicated, and cost is high.
Summary of the invention
The object of the invention is: provide a kind of moving speed of engineering machine to control switching valve, it is switched to slowly running under parallel way by oil hydraulic motor in the high speed rotating under serial fashion, realize the stepless change in two-stage velocity range, to overcome the deficiencies in the prior art.
The present invention is achieved in that moving speed of engineering machine control switching valve, comprise valve body, in valve body, be provided with 4 cavitys that are from left to right arranged in order and are communicated with successively, on first cavity of left side, be connected with right motor vent line and oil circuit, on the cavity of second, left side, be connected with left motor vent line, on first cavity of right side, be connected with left motor in-line and in-line, on the cavity of second, right side, be connected with right motor in-line; In valve body, be provided with the spool through 4 cavitys, at spool, be provided with 3 boss, first boss correspondence first cavity of left side in spool left side and the link position between the cavity of second, left side, link position between second second, left side of boss correspondence cavity in spool left side and second, right side cavity, the 3rd boss correspondence first cavity of right side in spool left side and the link position between the cavity of second, right side; When spool moves to the valve body rightmost side, isolated by second boss in spool left side between second cavity in second, left side cavity and right side, between all the other cavitys, be communicated with; When spool moves to the valve body leftmost side, isolated by first boss in spool left side between first cavity of left side and second, left side cavity, isolated by the 3rd boss in spool left side between second cavity in first cavity of right side and right side, between second, left side cavity and second, right side cavity, be communicated with.
Left end one end at spool is provided with spring, spring precompression, and spool is in right-hand member work, and guide's fluid enters spool right-hand member makes spool in left end work.
Adopt hydraulic driving, do not changing on the basis of oil hydraulic pump and oil hydraulic motor model, can, by operation switching valve of the present invention, control the output flow of oil hydraulic pump, realize oil hydraulic motor and work at serial fashion and under parallel way, realize the stepless change in two-stage velocity range.
Owing to having adopted technique scheme; compared with prior art; the present invention adopt on same valve body, arrange two groups of motors into and out of oil circuit; by switch valve structure, design with system matches and design; can realize and need not shut down under the operating mode of work in actuating device normal operation; carry out switching and the adjusting of speed; can expand the speed adjustable range that engineering machinery hydraulic speed is controlled; and can realize stepless change; make engineering machinery speed handover operation simple; speed is switched steadily nothing impact, the working life of improving hydraulic system.The present invention is integrated in one the series and parallel connections function that realizes system, and level of integration is high, and all right integrated security valve on this switching valve, realizes the safety protection function in system works loop simultaneously.The present invention compared with the existing technology, has following characteristics: (1) simplification machine drive mechanism, by fixed (change) amount hydraulic pump drive fixed (change) amount motor, realize hydraulic speed-changing, and in drive line, do not need to arrange synchronizer and can realize shock-free speed switching; (2) under the operating conditions that need not shut down at oil hydraulic pump and oil hydraulic motor, can realize the switching of speed, and switch steadily; (3) not changing under the quantity and model of oil hydraulic pump and oil hydraulic motor, by the operation of switching valve, can expand the speed adjustable range of system; (4) compare it with mechanical transmission and can realize stepless change, speed governing is convenient; (5) this switching valve level of integration is high, and cost of production is lower, controls simply, can work alone.The present invention can be widely used in self-propelled type engineering machinery enclosed walking system, need speed adjustable range great Qie actuator need not out-of-work enclosed or open system in, as engineering machinery such as excavator, loader, road roller, pavers, by electric liquid pilot control, also can realize easily remote operation and automatically control, there is simple in structure, easy to operate, cost performance advantages of higher, can be widely used in engineering machinery field.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is the A-A sectional view of accompanying drawing 1;
Accompanying drawing 3 is the perspective view of accompanying drawing 1;
Accompanying drawing 4 is asphalt principle figure of the present invention.
Embodiment
Embodiments of the invention: moving speed of engineering machine is controlled switching valve, comprise valve body 1, in valve body 1, be provided with 4 cavitys 2 that are from left to right arranged in order and are communicated with successively, on first cavity 2 of left side, be connected with right motor vent line B2 and oil circuit T, on the cavity 2 of second, left side, be connected with left motor vent line B1, on first cavity 2 of right side, be connected with left motor in-line A1 and in-line P, on the cavity 2 of second, right side, be connected with right motor in-line A2; In valve body 1, be provided with the spool 3 through 4 cavitys 2, at spool 3, be provided with 3 boss 4, corresponding first cavity 2 of left side of first boss 4 in spool 3 left sides and the link position between the cavity 2 of second, left side, second boss 4, second cavity 2 in corresponding left side in spool 3 left sides and the link position between the cavity 2 of second, right side, the 3rd first cavity 2 of the corresponding right side of boss 4 in spool 3 left sides and the link position between the cavity 2 of second, right side; When spool 3 moves to the valve body rightmost side, isolated by second boss 4 in spool 3 left sides between second cavity 2 in second, left side cavity 2 and right side, between all the other cavitys 2, be communicated with; When spool 3 moves to the valve body leftmost side, isolated by first boss 4 in spool 3 left sides between first cavity 2 of left side and second, left side cavity 2, isolated by the 3rd boss 4 in spool 3 left sides between first cavity 2 of right side and second, right side cavity 2, between second, left side cavity 2 and second, right side cavity 2, be communicated with; In one end of spool 3, be provided with spring 5, spring 5 precompression, spool 3 is in right-hand member work, and guide's fluid enters spool 3 right-hand members makes spool 3 in left end work.
The present invention is connected on two oil hydraulic motors 6, and its working principle as shown in Figure 4.
Claims (2)
1. a moving speed of engineering machine is controlled switching valve, comprise valve body (1), it is characterized in that: in valve body (1), be provided with 4 cavitys (2) that are from left to right arranged in order and are communicated with successively, on first cavity of left side (2), be connected with right motor vent line (B2) and oil circuit (T), on second cavity in left side (2), be connected with left motor vent line (B1), on first cavity of right side (2), be connected with left motor in-line (A1) and in-line (P), on second cavity in right side (2), be connected with right motor in-line (A2); In valve body (1), be provided with the spool (3) through 4 cavitys (2), at spool (3), be provided with 3 boss (4), first boss (4) corresponding left side first cavity (2) in spool (3) left side and the link position between second cavity in left side (2), second boss (4) corresponding left side second cavity (2) in spool (3) left side and the link position between second cavity in right side (2), the 3rd boss (4) first cavity of corresponding right side (2) in spool (3) left side and the link position between second cavity in right side (2); When spool (3) moves to the valve body rightmost side, isolated by second boss (4) in spool (3) left side between second cavity in second cavity in left side (2) and right side (2), between all the other cavitys (2), be communicated with; When spool (3) moves to the valve body leftmost side, isolated by first boss (4) in spool (3) left side between left side first cavity (2) and second cavity in left side (2), isolated by the 3rd boss (4) in spool (3) left side between second cavity in first cavity of right side (2) and right side (2), between second cavity in left side (2) and second cavity in right side (2), be communicated with.
2. moving speed of engineering machine according to claim 1 is controlled switching valve, it is characterized in that: in left end one end of spool (3), be provided with spring (5), spring (5) precompression, spool (3) is in right-hand member work, and guide's fluid enters spool (3) right-hand member makes spool (3) in left end work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310607396.1A CN103591282B (en) | 2013-11-27 | 2013-11-27 | Moving speed of engineering machine controls switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310607396.1A CN103591282B (en) | 2013-11-27 | 2013-11-27 | Moving speed of engineering machine controls switching valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103591282A true CN103591282A (en) | 2014-02-19 |
| CN103591282B CN103591282B (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310607396.1A Expired - Fee Related CN103591282B (en) | 2013-11-27 | 2013-11-27 | Moving speed of engineering machine controls switching valve |
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| Country | Link |
|---|---|
| CN (1) | CN103591282B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106104014A (en) * | 2014-03-13 | 2016-11-09 | 海德罗诺威什公司 | Multi-port fluid switch valve |
| CN107310392A (en) * | 2016-04-26 | 2017-11-03 | 贵州大学 | The handle console and its operating method of a kind of adjustable pitching angle |
| CN110886734A (en) * | 2019-11-20 | 2020-03-17 | 联合汽车电子有限公司 | Flow valve and position control method and device thereof |
| CN113757355A (en) * | 2021-11-08 | 2021-12-07 | 杭州非古科技有限公司 | New energy automobile hydraulic pressure valve plate assembly and derailleur |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022022A (en) * | 1976-04-26 | 1977-05-10 | Parker-Hannifin Corporation | Hydraulic system and control valve assembly therefor |
| JP2005016585A (en) * | 2003-06-24 | 2005-01-20 | Nachi Fujikoshi Corp | Automatic speed change selector valve for two-speed hydraulic motor |
| CN201496620U (en) * | 2009-09-03 | 2010-06-02 | 徐州徐工挖掘机械有限公司 | Velocity/torque changeover valve |
| CN202628650U (en) * | 2012-06-18 | 2012-12-26 | 付蕾 | Series connection and parallel connection changeover valve for power tongs |
| CN203585299U (en) * | 2013-11-27 | 2014-05-07 | 贵州大学 | Control changeover valve for traveling speeds of engineering machinery |
-
2013
- 2013-11-27 CN CN201310607396.1A patent/CN103591282B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022022A (en) * | 1976-04-26 | 1977-05-10 | Parker-Hannifin Corporation | Hydraulic system and control valve assembly therefor |
| JP2005016585A (en) * | 2003-06-24 | 2005-01-20 | Nachi Fujikoshi Corp | Automatic speed change selector valve for two-speed hydraulic motor |
| CN201496620U (en) * | 2009-09-03 | 2010-06-02 | 徐州徐工挖掘机械有限公司 | Velocity/torque changeover valve |
| CN202628650U (en) * | 2012-06-18 | 2012-12-26 | 付蕾 | Series connection and parallel connection changeover valve for power tongs |
| CN203585299U (en) * | 2013-11-27 | 2014-05-07 | 贵州大学 | Control changeover valve for traveling speeds of engineering machinery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106104014A (en) * | 2014-03-13 | 2016-11-09 | 海德罗诺威什公司 | Multi-port fluid switch valve |
| US9790101B2 (en) | 2014-03-13 | 2017-10-17 | Hydronovation, Inc. | Multi-port flow switching valve |
| CN106104014B (en) * | 2014-03-13 | 2018-03-30 | 海德罗诺威什公司 | Multi-port fluid switch valve |
| CN107310392A (en) * | 2016-04-26 | 2017-11-03 | 贵州大学 | The handle console and its operating method of a kind of adjustable pitching angle |
| CN110886734A (en) * | 2019-11-20 | 2020-03-17 | 联合汽车电子有限公司 | Flow valve and position control method and device thereof |
| CN110886734B (en) * | 2019-11-20 | 2022-01-18 | 联合汽车电子有限公司 | Flow valve and position control method and device thereof |
| CN113757355A (en) * | 2021-11-08 | 2021-12-07 | 杭州非古科技有限公司 | New energy automobile hydraulic pressure valve plate assembly and derailleur |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103591282B (en) | 2016-02-10 |
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Granted publication date: 20160210 Termination date: 20191127 |
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