CN201525715U - Crawler crane anti-back-tilting hydraulic system with function of switching high and low voltage - Google Patents
Crawler crane anti-back-tilting hydraulic system with function of switching high and low voltage Download PDFInfo
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- CN201525715U CN201525715U CN2009202105784U CN200920210578U CN201525715U CN 201525715 U CN201525715 U CN 201525715U CN 2009202105784 U CN2009202105784 U CN 2009202105784U CN 200920210578 U CN200920210578 U CN 200920210578U CN 201525715 U CN201525715 U CN 201525715U
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Abstract
The utility model relates to a crawler crane anti-back-tilting hydraulic system with the function of switching high and low voltage, which mainly comprises a remote control one-way overflow valve group, a secondary pressure control valve group and a variable pump with the functions of cutting off pressure and remote pressure control. By utilizing the secondary pressure control valve group to control the pressure of an external-control-type one-way overflow valve group, the system can realize the pressure control for an anti-back-tilting oil cylinder; and simultaneously, the function of switching high and low voltage of the variable pump is matched with that of the secondary pressure control valve group, so that the demand of switching high and low voltage of the system can be achieved. In the aspect of pressure maintaining performance, the remote control one-way overflow valve group is directly installed on the anti-back-tilting oil cylinder and has the function similar to a balanced valve, thus having better pressure maintaining performance.
Description
Technical field
The utility model relates to the crawler crane field, the anti-hypsokinesis hydraulic efficiency pressure system of particularly a kind of crawler crane with the high-low pressure switching.
Background technology
Anti-hypsokinesis of crawler crane principal arm and the function that surpass anti-hypsokinesis hydraulic efficiency pressure system are that jib gives jib a support reaction in the process of an arm, prevent the danger that jib has jib because of an arm angle is excessive to topple over backward.This system should be included in the safety control strategy.Since principal arm or surpass mast under different angles, needed support reaction difference, so design-calculated prevents that the hypsokinesis hydraulic efficiency pressure system needs just pressure handoff functionality; Simultaneously, after quit work at crawler crane (engine off), anti-hypsokinesis hydraulic efficiency pressure system also can keep big support reaction, and promptly hydraulic efficiency pressure system keeps elevated pressures.
Summary of the invention
The purpose of this utility model is to provide a kind of crawler crane with the high-low pressure switching anti-hypsokinesis hydraulic efficiency pressure system, and high-low pressure switches steadily, pressure maintaining performance is good and anti-pipeline explosion.
The technical solution of the utility model is:
The utility model mainly adopts the controllable capacity pump of the unidirectional by pass valve group of control far away, secondary pressure control cock group and band pressure cut off and remote pressure control to form.Utilize the pressure of secondary pressure control cock group, thereby realize pressure control anti-hypsokinesis oil cylinder by the unidirectional by pass valve group of control externally controlled type; The high-low pressure of controllable capacity pump switches the high-low pressure handoff functionality that cooperates secondary pressure control cock group simultaneously, and the high-low pressure that reaches system switches demand.On pressure maintaining performance, the unidirectional by pass valve group of band Long-distance Control is directly installed on the anti-hypsokinesis oil cylinder, similar balance cock effect, pressure maintaining performance is better.
Particularly, the anti-hypsokinesis hydraulic efficiency pressure system of the crawler crane that band high-low pressure of the present utility model switches, it comprises controllable capacity pump, governor pressure valve group far away, hand change over valve, secondary pressure control cock group, the unidirectional by pass valve group of externally controlled type and oil cylinder; Wherein, governor pressure valve group far away comprises two-position four-way reversing solenoid valve and by pass valve; This governor pressure valve group import A mouth far away connects controllable capacity pump control port X mouth, and another port T mouth takes back fuel tank; Secondary pressure control cock group comprises reducing valve, solenoid directional control valve, flow regulating valve, energy storage and shuttle valve; Reducing valve one port is that valve group T mouth takes back fuel tank, and the another port connects solenoid directional control valve; Flow regulating valve and energy storage serial connection, and be connected in solenoid directional control valve; Shuttle valve one port is connected in the pipeline between flow regulating valve and the energy storage, and the another port is the B mouth that secondary pressure control cock group A mouth connects hand change over valve, and the shuttle valve intermediate duct forms the B mouth of secondary pressure control cock group; Reducing valve one port is that the P mouth of secondary pressure control cock group connects a pressure oil-source; The unidirectional by pass valve group of externally controlled type comprises external control by pass valve, check valve; External control by pass valve one end is the rodless cavity A mouth that the unidirectional by pass valve group of externally controlled type A mouth connects oil cylinder, check valve one termination external control by pass valve A mouth, and the other end is the A mouth that the unidirectional by pass valve group of externally controlled type P mouth connects hand change over valve; External control by pass valve one port is that the intermediate duct that the unidirectional by pass valve group control mouthful X mouth of externally controlled type connects shuttle valve in the secondary pressure control cock group also is the B mouth of secondary pressure control cock group; It is that the unidirectional by pass valve group of externally controlled type T mouth takes back fuel tank that the external control by pass valve also has a port; Hand change over valve, its P mouth links to each other with the P mouth of controllable capacity pump, and the A mouth of hand change over valve links to each other with the P mouth of the unidirectional by pass valve group of externally controlled type, and the B mouth of hand change over valve links to each other with the rod chamber B mouth of oil cylinder and the A mouth of secondary pressure control cock group; The T mouth of hand change over valve takes back fuel tank.
Again, described controllable capacity pump band pressure cut off and remote pressure control.
Two-position four way change valve in the described secondary pressure control cock group is electromagnetic valve or hand change over valve.
In addition, solenoid directional control valve is two-bit triplet change-over valve or two position and four-way reversing valves in the described secondary pressure control cock group.
Flow regulating valve can be a damping hole in the described secondary pressure control cock group.
Have again, the unidirectional by pass valve group of externally controlled type described in the utility model also comprises a flow regulating valve, flow regulating valve one termination external control by pass valve, the other end are that the intermediate duct that the unidirectional by pass valve group control mouthful X mouth of externally controlled type connects shuttle valve in the secondary pressure control cock group also is the B mouth of secondary pressure control cock group.
The unidirectional by pass valve group of described externally controlled type is directly installed on the oil cylinder valve seat.
Advantage of the present utility model is:
1. integrated energy storage and flow regulating valve in the utility model secondary pressure control cock group guarantee the stationarity when system's high-low pressure switches;
2. have only a check valve and by pass valve with oil cylinder rodless cavity A mouth bonded assembly, leadage coefficient is less, and the pressurize effect is better;
3. the use of the controllable capacity pump of band pressure cut off and remote pressure control improves power utilization, and cal val is little;
4. the unidirectional by pass valve group of externally controlled type is directly installed on the oil cylinder valve seat, can prevent the danger that causes after the pressure duct explosion.
Description of drawings
Fig. 1 is the scheme drawing of the anti-hypsokinesis hydraulic efficiency pressure system of the utility model.
The specific embodiment
Referring to Fig. 1, the anti-hypsokinesis hydraulic efficiency pressure system of the crawler crane that the utility model band high-low pressure switches, it comprises controllable capacity pump 1, governor pressure valve group 2 far away, hand change over valve 3, secondary pressure control cock group 4, the unidirectional by pass valve group 5 of externally controlled type and oil cylinder 6; Wherein,
Governor pressure valve group 2 far away comprises two-position four-way reversing solenoid valve 21 and by pass valve 22; These governor pressure valve group 2 import A mouths far away connect controllable capacity pump 1 control port X mouth, and another port T mouth takes back fuel tank;
Secondary pressure control cock group 4 comprises reducing valve 41, solenoid directional control valve 42, flow regulating valve 43, energy storage 44 and shuttle valve 45; Reducing valve 41 1 ports are that valve group T mouth takes back fuel tank, and the another port connects solenoid directional control valve 42; Flow regulating valve 43 and energy storage 44 serial connections, and be connected in solenoid directional control valve 42; Shuttle valve 45 1 ports are connected in the pipeline between flow regulating valve 43 and the energy storage 44, and the another port is the B mouth that secondary pressure control cock group A mouth connects hand change over valve 3, and shuttle valve 45 intermediate duct form the B mouth of secondary pressure control cock group 4; Reducing valve 41 1 ports are that the P mouth of secondary pressure control cock group 4 connects a pressure oil-source 46;
The unidirectional by pass valve group 5 of externally controlled type comprises external control by pass valve 51, check valve 52; External control by pass valve 51 1 ends are the rodless cavity A mouth that the unidirectional by pass valve group of externally controlled type A mouth connects oil cylinder 6, check valve 52 1 termination external control by pass valve 51A mouths, and the other end is the A mouth that the unidirectional by pass valve group of externally controlled type P mouth connects hand change over valve 3; External control by pass valve 51 1 ports are that the intermediate duct that the unidirectional by pass valve group control mouthful X mouth of externally controlled type connects shuttle valve 45 in the secondary pressure control cock group 4 also is the B mouth of secondary pressure control cock group 4; It is that the unidirectional by pass valve group of externally controlled type T mouth takes back fuel tank that external control by pass valve 51 also has a port;
Hand change over valve 3, its P mouth links to each other with the P mouth of controllable capacity pump 1, and the A mouth of hand change over valve 3 links to each other with the P mouth of the unidirectional by pass valve group 5 of externally controlled type, and the B mouth of hand change over valve 3 links to each other with the rod chamber B mouth of oil cylinder 6 and the A mouth of secondary pressure control cock group 4; The T mouth of hand change over valve 3 takes back fuel tank.
Described controllable capacity pump 1 band pressure cut off and remote pressure control.
Two-position four way change valve in the described secondary pressure control cock group 4 is electromagnetic valve or hand change over valve.
Solenoid directional control valve is two-bit triplet change-over valve or two position and four-way reversing valves in the described secondary pressure control cock group.
The unidirectional by pass valve group 5 of described externally controlled type also comprises a flow regulating valve 53, flow regulating valve 53 1 termination external control by pass valves 51, the other end are that the intermediate duct that the unidirectional by pass valve group control mouthful X mouth of externally controlled type connects shuttle valve 45 in the secondary pressure control cock group 4 also is the B mouth of secondary pressure control cock group 4.
The unidirectional by pass valve group 5 of described externally controlled type is directly installed on the oil cylinder valve seat.
The action that initiatively bounces back of anti-hypsokinesis oil cylinder:
The position work of hand change over valve 3 left side, the P mouth pressure oil of controllable capacity pump 1 arrives the B mouth of oil cylinder 6 through the B mouth of hand change over valve 3; Pressure oil enters the A mouth of secondary pressure control cock group 4 simultaneously, select to arrive the B mouth through the high pressure of shuttle valve 45, arrive the X mouth (control mouth) of the unidirectional by pass valve group 5 of externally controlled type again, open the external control by pass valve, the A mouth hydraulic oil of oil cylinder 6 enters oil cylinder 6 through the external control by pass valve 51 in the unidirectional by pass valve group 5 of externally controlled type, thereby realizes oil cylinder 6 retraction actions.Solenoid directional control valve 42--YV2 dead electricity in this moment secondary pressure control cock group 4.
Anti-hypsokinesis oil cylinder mode of operation promptly satisfies when preventing the hypsokinesis function.This state can be divided into four kinds of situations:
A. oil cylinder 6 low pressure are static or when stretching out.
Solenoid directional control valve 42---YV2 in the secondary pressure control cock group 4 gets electric, the two-position four-way reversing solenoid valve 21---YV1 dead electricity of governor pressure valve group 2 far away.Hand change over valve 3 right position work, the P mouth pressure oil of controllable capacity pump 1 arrives the P5 mouth of the unidirectional by pass valve group 5 of externally controlled type through the A mouth of hand change over valve 3, arrive the A mouth of oil cylinder 6 again through the check valve of the unidirectional by pass valve group 5 of externally controlled type, make oil cylinder 6 piston rods to overhanging, until the principal arm that withstands crawler crane or surpassed mast.Simultaneously, the external control pressure source is through the P mouth of secondary pressure control cock group 4 and the outside control mouth of the unidirectional by pass valve group 5 of B mouth arrival externally controlled type, and outside control mouth pressure is determined by the reducing valve in the secondary pressure control cock group 4.The force value of the unidirectional by pass valve group 5 of externally controlled type is a low pressure.When oil cylinder 6 is static, controllable capacity pump 1 remote pressure cuts off, force value is determined by by pass valve 22 setup pressure value in the governor pressure valve group 2 far away, the rodless cavity pressure of oil cylinder 6 also is low pressure simultaneously, equate (noticing that by pass valve 22 setup pressure value in the governor pressure valve group 2 far away should be lower than the low voltage value of the unidirectional by pass valve group 5 of externally controlled type slightly) with controllable capacity pump 1 delivery pressure.
B. during oil cylinder 6 low pressure passive compression.
The control situation is identical with (a), and promptly controllable capacity pump 1 remote pressure cuts off, and the P mouth pressure is a low pressure, and discharge capacity approaches zero; The force value of the unidirectional by pass valve group 5 of externally controlled type also is a low pressure.But hydraulic oil flow is to the by pass valve in the unidirectional by pass valve group 5 enters into fuel tank by externally controlled type for oil cylinder 6 rodless cavity fluid.So oil cylinder 6 no bar (greatly) cavity pressure values equal the low pressure value of the unidirectional by pass valve group 5 of externally controlled type.
Solenoid directional control valve 42---YV2 dead electricity in the secondary pressure control cock group 4, the two-position four-way reversing solenoid valve 21---YV1 of governor pressure valve group 2 far away gets.Hand change over valve 3 right position work, the P mouth pressure oil of controllable capacity pump 1 arrives the P mouth of the unidirectional by pass valve group 5 of externally controlled type through the A mouth of hand change over valve 3, arrive the A mouth of oil cylinder 6 again through the check valve of the unidirectional by pass valve group 5 of externally controlled type, make oil cylinder 6 to overhanging, until the principal arm that withstands crawler crane or surpassed mast.Because solenoid directional control valve 42---YV2 dead electricity, the X mouth pressure of the unidirectional by pass valve group 5 of externally controlled type are zero, then, the pressure of the unidirectional by pass valve group 5 of externally controlled type is high pressure.When oil cylinder 6 is static, controllable capacity pump 1 high-pressure cuts off (by the built-in pressure shut-off valve decision of controllable capacity pump), the big cavity pressure of oil cylinder 6 also is a high pressure simultaneously, equate (noticing that controllable capacity pump 1 high-pressure cuts off the high-voltage value that setup pressure value should be lower than the unidirectional by pass valve group 5 of externally controlled type slightly) with controllable capacity pump 1 delivery pressure
D. during oil cylinder 6 high pressure passive compression.
The control situation is identical with (c), and promptly controllable capacity pump 1 high-pressure cuts off, and the P mouth pressure is a high pressure, and discharge capacity approaches zero; The force value of the unidirectional by pass valve group 5 of externally controlled type also is a high pressure.But hydraulic oil flow is to the by pass valve in the unidirectional by pass valve group 5 enters into fuel tank by externally controlled type for oil cylinder 6 big chamber fluid.So oil cylinder 6 big cavity pressure values equal the high-pressure value of the unidirectional by pass valve group 5 of externally controlled type.
Claims (7)
1. the anti-hypsokinesis hydraulic efficiency pressure system of the crawler crane with the high-low pressure switching is characterized in that, comprises controllable capacity pump, governor pressure valve group far away, hand change over valve, secondary pressure control cock group, the unidirectional by pass valve group of externally controlled type and oil cylinder; Wherein,
Governor pressure valve group far away comprises two-position four-way reversing solenoid valve and by pass valve; This governor pressure valve group import A mouth far away connects controllable capacity pump control port X mouth, and another port T mouth takes back fuel tank;
Secondary pressure control cock group comprises reducing valve, solenoid directional control valve, flow regulating valve, energy storage and shuttle valve; Reducing valve one port is that valve group T mouth takes back fuel tank, and the another port connects solenoid directional control valve; Flow regulating valve and energy storage serial connection, and be connected in solenoid directional control valve; Shuttle valve one port is connected in the pipeline between flow regulating valve and the energy storage, and the another port is the B mouth that secondary pressure control cock group A mouth connects hand change over valve, and the shuttle valve intermediate duct forms the B mouth of secondary pressure control cock group; Reducing valve one port is that the P mouth of secondary pressure control cock group connects a pressure oil-source;
The unidirectional by pass valve group of externally controlled type comprises external control by pass valve, check valve; External control by pass valve one end is the rodless cavity A mouth that the unidirectional by pass valve group of externally controlled type A mouth connects oil cylinder, check valve one termination external control by pass valve A mouth, and the other end is the A mouth that the unidirectional by pass valve group of externally controlled type P mouth connects hand change over valve; External control by pass valve one port is that the intermediate duct that the unidirectional by pass valve group control mouthful X mouth of externally controlled type connects shuttle valve in the secondary pressure control cock group also is the B mouth of secondary pressure control cock group; It is that the unidirectional by pass valve group of externally controlled type T mouth takes back fuel tank that the external control by pass valve also has a port;
Hand change over valve, its P mouth links to each other with the P mouth of controllable capacity pump, and the A mouth of hand change over valve links to each other with the P mouth of the unidirectional by pass valve group of externally controlled type, and the B mouth of hand change over valve links to each other with the rod chamber B mouth of oil cylinder and the A mouth of secondary pressure control cock group; The T mouth of hand change over valve takes back fuel tank.
2. the anti-hypsokinesis hydraulic efficiency pressure system of the crawler crane that band high-low pressure as claimed in claim 1 switches is characterized in that, described controllable capacity pump band pressure cut off and remote pressure control.
3. the anti-hypsokinesis hydraulic efficiency pressure system of the crawler crane that band high-low pressure as claimed in claim 1 switches is characterized in that the two-position four way change valve in the described secondary pressure control cock group is electromagnetic valve or hand change over valve.
4. the anti-hypsokinesis hydraulic efficiency pressure system of the crawler crane that band high-low pressure as claimed in claim 1 switches is characterized in that solenoid directional control valve is two-bit triplet change-over valve or two position and four-way reversing valves in the described secondary pressure control cock group.
5. the anti-hypsokinesis hydraulic efficiency pressure system of the crawler crane that band high-low pressure as claimed in claim 1 switches is characterized in that flow regulating valve can be a damping hole in the described secondary pressure control cock group.
6. the anti-hypsokinesis hydraulic efficiency pressure system of the crawler crane that band high-low pressure as claimed in claim 1 switches, it is characterized in that, the unidirectional by pass valve group of described externally controlled type also comprises a flow regulating valve, flow regulating valve one termination external control by pass valve, the other end are that the intermediate duct that the unidirectional by pass valve group control mouthful X mouth of externally controlled type connects shuttle valve in the secondary pressure control cock group also is the B mouth of secondary pressure control cock group.
7. the anti-hypsokinesis hydraulic efficiency pressure system of the crawler crane that band high-low pressure as claimed in claim 1 switches is characterized in that the unidirectional by pass valve group of described externally controlled type is directly installed on the oil cylinder valve seat.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202105784U CN201525715U (en) | 2009-10-10 | 2009-10-10 | Crawler crane anti-back-tilting hydraulic system with function of switching high and low voltage |
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| CN2009202105784U CN201525715U (en) | 2009-10-10 | 2009-10-10 | Crawler crane anti-back-tilting hydraulic system with function of switching high and low voltage |
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| CN201525715U true CN201525715U (en) | 2010-07-14 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718145A (en) * | 2012-03-23 | 2012-10-10 | 昆山三一机械有限公司 | Crawler crane modularized hydraulic system and crane comparing same |
| CN102758389A (en) * | 2012-06-28 | 2012-10-31 | 湖南海捷精密工业有限公司 | Hydraulic balance loop of mobile device |
| CN103469785A (en) * | 2013-09-26 | 2013-12-25 | 徐工集团工程机械股份有限公司 | Anti-backward inclination control device of dynamic compactor |
| CN104692267A (en) * | 2015-01-22 | 2015-06-10 | 徐工集团工程机械股份有限公司 | Anti-hypsokinesis safe control device of crane arm frame |
| CN109322882A (en) * | 2018-12-04 | 2019-02-12 | 大连华锐重工集团股份有限公司 | A kind of hydraulic power unit and its control method of bolt-type ocean lifting platform |
| CN111173784A (en) * | 2020-01-16 | 2020-05-19 | 山东省农业机械科学研究院 | Full-independent suspension steering drive axle hydraulic system |
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2009
- 2009-10-10 CN CN2009202105784U patent/CN201525715U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718145A (en) * | 2012-03-23 | 2012-10-10 | 昆山三一机械有限公司 | Crawler crane modularized hydraulic system and crane comparing same |
| CN102718145B (en) * | 2012-03-23 | 2015-05-20 | 昆山三一机械有限公司 | Crawler crane modularized hydraulic system and crane comparing same |
| CN102758389A (en) * | 2012-06-28 | 2012-10-31 | 湖南海捷精密工业有限公司 | Hydraulic balance loop of mobile device |
| CN103469785A (en) * | 2013-09-26 | 2013-12-25 | 徐工集团工程机械股份有限公司 | Anti-backward inclination control device of dynamic compactor |
| CN103469785B (en) * | 2013-09-26 | 2015-12-16 | 徐工集团工程机械股份有限公司 | Anti-backward inclination control device of dynamic compactor |
| CN104692267A (en) * | 2015-01-22 | 2015-06-10 | 徐工集团工程机械股份有限公司 | Anti-hypsokinesis safe control device of crane arm frame |
| CN104692267B (en) * | 2015-01-22 | 2016-09-14 | 徐工集团工程机械股份有限公司 | A kind of crane arm support anti-hypsokinesis safety control |
| CN109322882A (en) * | 2018-12-04 | 2019-02-12 | 大连华锐重工集团股份有限公司 | A kind of hydraulic power unit and its control method of bolt-type ocean lifting platform |
| CN111173784A (en) * | 2020-01-16 | 2020-05-19 | 山东省农业机械科学研究院 | Full-independent suspension steering drive axle hydraulic system |
| CN111173784B (en) * | 2020-01-16 | 2021-10-08 | 山东省农业机械科学研究院 | Full-independent suspension steering drive axle hydraulic system |
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Owner name: KUNSHAN SANY MACHINERY CO., LTD. Free format text: FORMER OWNER: SHANGHAI SANY TECHNOLOGY CO., LTD. Effective date: 20110329 |
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Free format text: CORRECT: ADDRESS; FROM: 201200 NO. 319, CHUANDA ROAD, CHUANSHA ECNOMIC PARK, PUDONG NEW DISTRICT, SHANGHAI TO: 215300 HUANCHENG EAST ROAD, KUNSHAN DEVELOPMENT ZONE, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110329 Address after: 215300 East Ring Road, Kunshan Development Zone, Jiangsu Patentee after: Kunshan Sany Machinery Co., Ltd. Address before: 201200 Shanghai City Sichuan Road Pudong New Area Chuansha economic Park No. 319 Patentee before: Shanghai Sany Technology Co., Ltd. |
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| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG SANY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: KUNSHAN SANY MACHINERY CO., LTD. Effective date: 20140519 |
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Free format text: CORRECT: ADDRESS; FROM: 215300 SUZHOU, JIANGSU PROVINCE TO: 313028 HUZHOU, ZHEJIANG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140519 Address after: 313028 building, floor 2, standard factory building, Cao Yi village, eight Li Town, Huzhou, Zhejiang Patentee after: Zhejiang Sany Equipment Co., Ltd. Address before: 215300 East Ring Road, Kunshan Development Zone, Jiangsu Patentee before: Kunshan Sany Machinery Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20171010 |