CN203428832U - Double-winch control system and engineering machinery - Google Patents
Double-winch control system and engineering machinery Download PDFInfo
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- CN203428832U CN203428832U CN201320513864.4U CN201320513864U CN203428832U CN 203428832 U CN203428832 U CN 203428832U CN 201320513864 U CN201320513864 U CN 201320513864U CN 203428832 U CN203428832 U CN 203428832U
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- 239000002828 fuel tank Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
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Abstract
The utility model provides a two hoist control system reaches engineering machine tool including this two hoist control system, two hoist control system include first hoist (10) and second hoist (20), first motor (12) and second motor (22), first hydraulic control main valve (14) and second hydraulic control main valve (24), be connected with first compensation oil circuit (30) and second compensation oil circuit (32) of alternative break-make respectively between A mouth of first motor (12) and the C mouth of second motor and between the B mouth of first motor and the D mouth of second motor; the system also comprises a hydraulic valve group (40) for controlling the first hydraulic main valve and the second hydraulic main valve to switch the working positions; the system includes a synchronous control state and an independent control state. The utility model discloses both can realize first hoist and second hoist and realize synchronous control, from the load of two hoists of balanced in principle, the stable performance is reliable when realizing two hoist synchronization action, can realize first hoist and second hoist independent control again, and the pipe connection is simple, low cost, and is easy and simple to handle.
Description
Technical field
The utility model relates to technical field of engineering machinery, relates in particular to double hoisting control system and has its construction machinery and equipment.
Background technology
At present, the construction machinery and equipment such as continuous wall grab, crawler crane is used double hoisting more and more.Double hoisting synchronous control technique is a gordian technique and a difficult problem, when double hoisting hoists simultaneously, declines, two winchs are due to factor impacts such as unbalance stress, cause double hoisting machine to hoist, decline asynchronous, affect operating efficiency and construction precision, this problem is perplexing vast research and development designer always.But double hoisting control system that can only synchronization action can not meet operating needs completely, in some situation, require double hoisting both can synchronization action and responsiveness consistent, again can single movement.
Refer to Fig. 1, Fig. 1 is existing double hoisting synchronous control system, this system comprises the first elevator 10, the first motor 12 that drives the first elevator 10 to hoist and decline, the the first hydraulic control main valve 14 being connected with the first motor 12 two ends, the second elevator 20, the second motor 22 that drives the second elevator 20 to hoist and decline, the the second hydraulic control main valve 24 being connected with the second motor 22 two ends, this system is by being connected with respectively the first compensation oil circuit 31 and the second compensation oil circuit 32 between the A mouth at the first motor 12 and the C mouth of the second motor 22 and between the B mouth of the first motor 12 and the D mouth of the second motor 22, by these two compensation oil circuits, guarantee the synchronization action of double hoisting.But this control system can only meet the requirement of double hoisting synchronization action, and can not meet the requirement of double hoisting single movement.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of not only met the requirement of synchro control but also met control separately the double hoisting control system requiring.
The double hoisting control system that the utility model provides, comprise the first elevator with the second elevator, drive respectively the first motor and the second motor, the first hydraulic control main valve being connected with the second motor with described the first motor respectively and the second hydraulic control main valve of the first elevator and the second elevator, between the A mouth of described the first motor and the C mouth of described the second motor and between the B mouth of the first motor and the D mouth of described the second motor, be connected with respectively the first compensation oil circuit and the second compensation oil circuit of alternative break-make; Described system also comprises to be controlled described the first hydraulic control main valve and the second hydraulic control main valve switch operating position and controls described the first compensation oil circuit and the hydraulic valve bank of the second compensation oil circuit break-make; Described system comprises synchro control state and independent state of a control, described system is in synchro control state, described the first compensation oil circuit and the second compensation oil circuit are all communicated with, and described hydraulic valve bank is controlled described the first pilot operated directional control valve and the second pilot operated directional control valve while switch operating position; Described system is in independent state of a control, and described the first compensation oil circuit and the second compensation oil circuit all disconnect, and described hydraulic valve bank is controlled described the first pilot operated directional control valve and/or the second pilot operated directional control valve switch operating position.
Preferably, described hydraulic valve bank comprises oil inlet end E
1, oil inlet end E
2, oil inlet end E
3, oil inlet end E
4, oil inlet end E
5, oil inlet end E
6, described oil inlet end E
1with oil inlet end E
2between and oil inlet end E
4with oil inlet end E
5between be connected with respectively the first shuttle valve and the second shuttle valve, the oil outlet end of described the first shuttle valve and described the second shuttle valve is connected to respectively relative two control ends of the first hydraulic control main valve, described oil inlet end E
2with oil inlet end E
3between and oil inlet end E
5with oil inlet end E
6between be connected with respectively the 3rd shuttle valve and the 4th shuttle valve, the oil outlet end of described the 3rd shuttle valve and the 4th shuttle valve is connected to respectively relative two control ends of the second hydraulic control main valve.
Preferably, described hydraulic valve bank comprises selector valve, on oil circuit on oil circuit between relative two control ends of oil outlet end to the first hydraulic control main valve of described the first shuttle valve and the second shuttle valve and between relative two control ends of oil outlet end to the second hydraulic control main valve of the 3rd shuttle valve and the 4th shuttle valve, be respectively arranged with described selector valve, described selector valve selectivity is by oil circuit oil-feed or the oil return at its place.
Preferably, described selector valve is solenoid directional control valve, and described solenoid directional control valve comprises the return opening being communicated with fuel tank.
Preferably, on described the first compensation oil circuit and the second compensation oil circuit, be provided with the switch valve with on-off function.
Preferably, described switch valve is pilot operated directional control valve, comprises liquid controling cavity and spring cavity, and described liquid controling cavity is communicated with oil inlet end and the oil outlet end of described pilot operated directional control valve, and described spring cavity is connected with fuel tank by having the control cock of on-off function.
Preferably, described control cock comprises a hydraulic control end, and described hydraulic valve bank also comprises described oil inlet end E
1, oil inlet end E
3, oil inlet end E
4and oil inlet end E
6in the high pressure oil at arbitrary place export the comparison valve group of the hydraulic control end of described control cock to.
Preferably, described relatively valve group comprise the 5th shuttle valve, respectively with described oil inlet end E
1with oil inlet end E
3the 6th shuttle valve connecting, respectively with described oil inlet end E
4with oil inlet end E
6the 7th shuttle valve connecting, the oil outlet end of described the 6th shuttle valve and the 7th shuttle valve is connected to respectively two oil inlet ends of the 5th shuttle valve, and the oil outlet end of described the 5th shuttle valve is connected to the hydraulic control end of described control cock.
The utility model also provides a kind of construction machinery and equipment, and this project machinery comprises above-mentioned double hoisting control system.
Preferably, described construction machinery and equipment is subterranean continuous wall hydraulic grab.
The utility model is by arranging the first compensation oil circuit, the second compensation oil circuit and hydraulic valve bank, make both can to realize the first elevator and the second elevator is realized synchro control, the load of two winchs of balance principle, while realizing double hoisting synchronization action, smooth performance is reliable, can realize the first elevator again and the second elevator is independently controlled, pipeline connects simple, with low cost, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is the double hoisting control system schematic diagram of prior art;
Fig. 2 is the double hoisting control system schematic diagram of an embodiment of the present utility model.
Nomenclature
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
The utility model provides a kind of and not only meets the requirement of synchro control but also meet the double hoisting control system of controlling separately requirement, refer to Fig. 2, described system comprises the first elevator 10 and the second elevator 20, drive respectively the first motor 12 and second motor 22 of the first elevator 10 and the second elevator 20, the the first hydraulic control main valve 14 and the second hydraulic control main valve 24 that are connected with the second motor 22 with described the first motor 12 respectively, between the C mouth of the A mouth of described the first motor 12 and described the second motor 22 and between the B mouth of the first motor 12 and the D mouth of described the second motor 22, be connected with respectively the first compensation oil circuit 30 and the second compensation oil circuit 32 of alternative break-make, described system also comprises to be controlled described the first hydraulic control main valve 14 and the second hydraulic control main valve 24 switch operating positions and controls described the first compensation oil circuit 30 and the hydraulic valve bank 40 of the second compensation oil circuit 32 break-makes, and described system comprises synchro control state and independent state of a control.Described system is when synchro control state, and described the first compensation oil circuit 30 and the second compensation oil circuit 32 are all communicated with, and described hydraulic valve bank 40 is controlled described the first hydraulic control main valve 14 and the second 24 while of hydraulic control main valve switch operating position; Described system is when independent state of a control, and described the first compensation oil circuit 30 and the second compensation oil circuit 32 all disconnect, and described hydraulic valve bank 40 is controlled described the first pilot operated directional control valve or the second pilot operated directional control valve switch operating position.The utility model is by arranging the first compensation oil circuit 30, the second compensation oil circuit 32 and hydraulic valve bank 40, make both to realize the first elevator 10 and the second elevator 20 is realized synchro control, the load of two winchs of balance principle, while realizing double hoisting synchronization action, smooth performance is reliable, can realize again the first elevator 10 and the independent control of the second elevator 20, pipeline connects simple, with low cost, easy and simple to handle.Be understandable that, the A mouth of described the first motor 12 and B mouth refer to oil inlet and the return opening of the opposite end of the first motor 12.The C mouth of described the second motor 22 and D mouth refer to oil inlet and the return opening of the opposite end of the second motor 22.
Described the first hydraulic control main valve 14 comprises two actuator ports, two hydraulic control ends, an oil inlet P and two oil return inlet T, and one of them working hole is connected with the A mouth of described the first motor 12, and wherein another actuator port is connected with the B mouth of described the first motor 12; Described two control ends are all connected with described hydraulic valve bank 40.Described the first hydraulic control main valve 14 at least comprises the A mouth of the first working position that oil inlet P is communicated with the B mouth of described the first motor 12, the second working position, oil inlet P blocking-up and the first motor 12 that oil inlet P is communicated with the A mouth of described the first motor 12 and the meta that B mouth is communicated with oil return inlet T simultaneously.
Described the second hydraulic control main valve 24 comprises two actuator ports, two hydraulic control ends, an oil inlet P and two oil return inlet T, and one of them working hole is connected with the C mouth of described the second motor 22, and wherein another actuator port is connected with the D mouth of described the second motor 22; Described two control ends are all connected with described hydraulic valve bank 40.Described the second hydraulic control main valve 24 at least comprises the C mouth of the first working position that oil inlet P is communicated with the D mouth of described the second motor 22, the second working position, oil inlet P blocking-up and the second motor 22 that oil inlet P is communicated with the C mouth of described the second motor 22 and the meta that D mouth is communicated with oil return inlet T simultaneously.
Described hydraulic valve bank 40 comprises six oil inlet ends, i.e. oil inlet end E
1, oil inlet end E
2, oil inlet end E
3, oil inlet end E
4, oil inlet end E
5and oil inlet end E
6.Described oil inlet end E
1with oil inlet end E
2between and oil inlet end E
4with oil inlet end E
5between be connected with respectively the first shuttle valve 41 and the second shuttle valve 42, the oil outlet end of described the first shuttle valve 41 and described the second shuttle valve 42 is connected to respectively relative two control ends of the first hydraulic control main valve 14, particularly, two oil inlet ends of described the first shuttle valve 41 respectively with described oil inlet end E
1with oil inlet end E
2connect, the oil outlet end of described the first shuttle valve 41 is connected to one of them control end of described the first hydraulic control main valve 14; Two oil inlet ends of described the second shuttle valve 42 respectively with described oil inlet end E
4with oil inlet end E
6connect, the oil outlet end of described the second shuttle valve 42 is connected to wherein another control end of the first hydraulic control main valve 14.
Described oil inlet end E
2with oil inlet end E
3between and oil inlet end E
5with oil inlet end E
6between be connected with respectively the 3rd shuttle valve 43 and the 4th shuttle valve 44, the oil outlet end of described the 3rd shuttle valve 43 and the 4th shuttle valve 44 is connected to respectively relative two control ends of the second hydraulic control main valve 24.Particularly, two oil inlet ends of described the 3rd shuttle valve 43 respectively with described oil inlet end E
2with oil inlet end E
3connect, the oil outlet end of described the 3rd shuttle valve 43 is connected to one of them control end of described the second hydraulic control main valve 24; Two oil inlet ends of described the 4th shuttle valve 44 respectively with described oil inlet end E
5with oil inlet end E
6connect, the oil outlet end of described the 4th shuttle valve 44 is connected to wherein another control end of the second hydraulic control main valve 24.
As described oil inlet end E
1or oil inlet end E
3while passing into high pressure oil, hydraulic valve bank 40 is controlled described the first hydraulic control main valve 14 switch operating positions, as oil inlet end E
2during oil-feed, hydraulic valve bank 40 is controlled described the first hydraulic control main valve 14 and the second 24 while of hydraulic control main valve switch operating position; As oil inlet end E
4or oil inlet end E
6while passing into high pressure oil, hydraulic valve bank 40 is controlled described the second hydraulic control main valve 24 switch operating positions, as oil inlet end E
5during oil-feed, hydraulic valve bank 40 is controlled described the first hydraulic control main valve 14 and the second 24 while of hydraulic control main valve switch operating position; It should be noted that oil inlet end E
1during oil-feed and oil inlet end E
3the valve core movement of controlling the first hydraulic control main valve 14 during oil-feed moves in the opposite direction, oil inlet end E
4during oil-feed or oil inlet end E
6the valve core movement of controlling the second hydraulic control main valve 24 during oil-feed moves in the opposite direction.
When one of them control end oil-feed of described the first hydraulic control main valve 14 and/or the second hydraulic control main valve 24, its another control end needs oil return, for this reason, described hydraulic valve bank 40 comprises the selector valve 48 on the oil circuit on the oil circuit between relative two control ends of oil outlet end to the first hydraulic control main valve 14 that is arranged at described the first shuttle valve 41 and the second shuttle valve 42 and between relative two control ends of oil outlet end to the second hydraulic control main valve 24 of the 3rd shuttle valve 43 and the 4th shuttle valve 44, described selector valve 48 selectivity are by oil circuit oil-feed or the oil return at its place, i.e. the first shuttle valve 41, the second shuttle valve 42, the oil outlet end of each shuttle valve in the 3rd shuttle valve 43 and the 4th shuttle valve 44 is provided with selector valve 48 to the oil circuit between connected corresponding control end.Described selector valve 48 comprises an oil inlet, a return opening and an actuator port, and described oil inlet is connected with the oil outlet end of corresponding shuttle valve, and described actuator port is connected with corresponding control end, and described return opening is connected with fuel tank T0.Described selector valve 48 comprises the first working position and the second working position, when described selector valve 48 is positioned at the first working position, described oil inlet is communicated with described actuator port,, make the oil circuit oil-feed at these selector valve 48 places, the control end being connected with this actuator port drives corresponding hydraulic control main valve switch operating position, and then makes motor drive elevator work; When described change-over valve is positioned at the second working position, described actuator port is communicated with described return opening, makes the oil circuit oil return at these selector valve 48 places.The switching controls of the working position of described selector valve 48 can, due to various ways, for example, can be but be not limited to the solenoid directional control valve in the present embodiment.
The first compensation oil circuit 30 and the second compensation oil circuit 32, for the difference in flow of the first motor 12 and the second motor 22 is compensated, guarantee the synchronous rotation of the first motor 12 and the second motor 22.For the ease of the break-make of described the first compensation oil circuit 30 and the second compensation oil circuit 32 is controlled, on described the first compensation oil circuit 30 and the second compensation oil circuit 32, be provided with the switch valve 34 with on-off function.Described switch valve 34 can be the valve with the arbitrary structures of on-off function, for example, in the present embodiment, be preferably pilot operated directional control valve, described pilot operated directional control valve comprises liquid controling cavity and spring cavity, described liquid controling cavity is communicated with oil inlet end and the oil outlet end of described pilot operated directional control valve, realize its oil inlet end or oil outlet end and all can control the break-make of pilot operated valve device, described pilot operated directional control valve comprises makes to compensate accordingly oil circuit the first working position being communicated with and the second working position that makes to compensate accordingly oil circuit disconnection.For the first compensation oil circuit 30 and the second compensation oil circuit 32 are carried out to safe and reliable control, described spring cavity is connected with fuel tank T0 by having the control cock 36 of on-off function.Particularly, the oil inlet of described control cock 36 is connected with fuel tank T0, its oil outlet is communicated with described the first compensation oil circuit 30 and the second spring cavity that compensates the pilot operated directional control valve on oil circuit 32 simultaneously, described control cock 36 comprises the first working position and the second working position, described control cock 36 is positioned at the first working position, its oil inlet, oil outlet and fuel tank T0 are communicated with, the spring cavity pressure release of described pilot operated directional control valve, now, the pressure oil of the liquid controling cavity of pilot operated directional control valve can be controlled pilot operated directional control valve and switch to the first working position; Described control cock 36 is positioned at the second working position, its oil inlet and oil outlet disconnect, the pressure oil of described spring cavity builds the pressure, make pilot operated directional control valve stably in the second working position, now, if while producing negative pressure condition in this spring cavity, can also be by the control cock 36 in the second working position from fuel tank T0 repairing.
For the ease of controlling the working position of described control cock 36, switch, described hydraulic valve bank 40 also comprises described oil inlet end E
1, oil inlet end E
3, oil inlet end E
4and oil inlet end E
6in the high pressure oil at arbitrary place export the comparison valve group of the hydraulic control end of described control cock 36 to, described control cock 36 comprises a hydraulic control end, the described relatively oil outlet end of valve group is connected with the hydraulic control end of described pilot operated directional control valve.As oil inlet end E
1, oil inlet end E
3, oil inlet end E
4and oil inlet end E
6in arbitrary place while having high pressure oil, described relatively valve exports this high pressure oil to the hydraulic control end of pilot operated directional control valve, controls described pilot operated directional control valve and switches to the second working position, as oil inlet end E
1, oil inlet end E
3, oil inlet end E
4and oil inlet end E
6during all without high pressure oil, described pilot operated directional control valve is positioned at the first working position.Particularly, described relatively valve group comprise the 5th shuttle valve 45, respectively with described oil inlet end E
1with oil inlet end E
3the 6th shuttle valve 46 connecting, respectively with described oil inlet end E
4with oil inlet end E
6the 7th shuttle valve 47 connecting, the oil outlet end of described the 6th shuttle valve 46 and the 7th shuttle valve 47 is connected to respectively two oil inlet ends of the 5th shuttle valve 45, and the oil outlet end of described the 5th shuttle valve 45 is connected to the hydraulic control end of described pilot operated directional control valve.
Below principle of work of the present utility model is elaborated.When the first elevator 10 and the second elevator 20 need independent control, can be by described oil inlet end E
1or E
4in arbitrary place pass into high pressure oil, and/or oil inlet end E
3or E
6in arbitrary place pass into high pressure oil.Now with oil inlet end E
1passing into high pressure oil is that example is described in detail.Oil inlet end E
1pass into high pressure oil, part high pressure oil enters one of them control end of the first hydraulic control main valve 14 by the first shuttle valve 41 and selector valve 48, control the first hydraulic control main valve 14 and switch to the first working position from meta, the pressure oil of the oil inlet P of the first hydraulic control main valve 14 enters the B mouth of the first motor 12, and the first motor 12 drives the first elevator 10 to promote.Meanwhile, pass into oil inlet end E
1another part high pressure oil through the 6th shuttle valve 46 and the 5th shuttle valve 45, enter the control end of control cock 36, make this control cock 36 switch to the second working position from the first working position, and then make the pilot operated directional control valve on described the first compensation oil circuit 30 and the second compensation oil circuit 32 all stably maintain the first working position, the first compensation oil circuit 30 and the second compensation oil circuit 32 all disconnect, thus, reach the first elevator 10 and the independent object of controlling of the second elevator 20.In like manner, as oil inlet end E
3, oil inlet end E
4, or oil inlet end E
6pass into principle of work and the oil inlet end E of high pressure oil
1principle of work identical, do not repeat them here.Be understandable that, the independent of the first elevator 10 and the second elevator 20 controlled, and the control that refers to the first elevator 10 and the second elevator 20 is independent of each other, and can control independently the first elevator 10 and the second elevator 20 work simultaneously.
When described the first elevator 10 and the second elevator 20 need synchro control, by oil inlet end E
2or oil inlet end E
5pass into high pressure oil, existing with oil inlet end E
2passing into high pressure oil is that example is described in detail.Oil inlet end E
2pass into high pressure oil, high pressure oil arrives the corresponding controling end of the first hydraulic control main valves 14 and the second hydraulic control main valve 24 simultaneously through the first shuttle valve 41 and the second shuttle valve 42 and corresponding selector valve 48, control the first hydraulic control main valve 14 and the second hydraulic control main valve 24 switches to corresponding the first working position from corresponding meta, make the first motor 12 and the second motor 22 drive the first elevator 10 and the second elevator 20 to promote simultaneously.Simultaneously, because the control end of control cock 36 does not have high pressure oil to enter, control cock 36 is in the first working position, the high pressure oil of described the first compensation oil circuit 30 and the second compensation oil circuit 32 is controlled its corresponding pilot operated directional control valve and is switched to the second working position by the first working position, and the first compensation oil circuit 30 and the second compensation oil circuit 32 are all communicated with.Because the respective ends of the first motor 12 and the second motor 22 is all connected compensation oil circuit, making does not have difference in flow between the first motor 12 and the second motor 22, guarantee the synchronous working of the first motor 12 and the second motor 22, and then realized the object of the first elevator 10 and the second elevator 20 synchro control.The first hydraulic control main valve 14 under double hoisting control system synchro control state of the present utility model and the control oil of the second hydraulic control main valve 24 control ends derive from same hydraulic fluid port (oil inlet end E
2or oil inlet end E
5), guaranteed that the pressure of two hydraulic control main valve control ends is consistent.
The utility model is different with second synchronization action of elevator 20 or the operation of self contained function according to the first elevator 10, automatically realizes the break-make of the first compensation conduit 30 and the second compensation conduit 32, does not need other electrical control gears, controls simple, reliable.
The utility model also provides a kind of construction machinery and equipment, and this project machinery comprises above-mentioned double hoisting control system.Preferably, this project machinery is subterranean continuous wall hydraulic grab.
Below describe by reference to the accompanying drawings a preferred implementation of the present utility model in detail, still, be not limited to the detail in above-mentioned embodiment.Within the scope of technical conceive of the present utility model, can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Claims (10)
1. double hoisting control system, described system comprises the first elevator (10) and the second elevator (20), drive respectively the first motor (12) and second motor (22) of the first elevator (10) and the second elevator (20), the the first hydraulic control main valve (14) being connected with the second motor (22) with described the first motor (12) respectively and the second hydraulic control main valve (24), it is characterized in that, between the C mouth of the A mouth of described the first motor (12) and described the second motor (22) and between the B mouth of the first motor (12) and the D mouth of described the second motor (22), be connected with respectively the first compensation oil circuit (30) and the second compensation oil circuit (32) of alternative break-make, described system also comprises to be controlled described the first hydraulic control main valve (14) and the second hydraulic control main valve (24) switch operating position and controls described the first compensation oil circuit (30) and the hydraulic valve bank (40) of the second compensation oil circuit (32) break-make, described system comprises synchro control state and independent state of a control, described system is in synchro control state, described the first compensation oil circuit (30) and the second compensation oil circuit (32) are all communicated with, and described hydraulic valve bank (40) is controlled described the first pilot operated directional control valve and the second pilot operated directional control valve while switch operating position, described system is in independent state of a control, and described the first compensation oil circuit (30) and the second compensation oil circuit (32) all disconnect, and described hydraulic valve bank (40) is controlled described the first pilot operated directional control valve and/or the second pilot operated directional control valve switch operating position.
2. double hoisting control system as claimed in claim 1, is characterized in that, described hydraulic valve bank (40) comprises oil inlet end E
1, oil inlet end E
2, oil inlet end E
3, oil inlet end E
4, oil inlet end E
5, oil inlet end E
6, described oil inlet end E
1with oil inlet end E
2between and oil inlet end E
4with oil inlet end E
5between be connected with respectively the first shuttle valve (41) and the second shuttle valve (42), the oil outlet end of described the first shuttle valve (41) and described the second shuttle valve (42) is connected to respectively relative two control ends of the first hydraulic control main valve (14), described oil inlet end E
2with oil inlet end E
3between and oil inlet end E
5with oil inlet end E
6between be connected with respectively the 3rd shuttle valve (43) and the 4th shuttle valve (44), the oil outlet end of described the 3rd shuttle valve (43) and the 4th shuttle valve (44) is connected to respectively relative two control ends of the second hydraulic control main valve (24).
3. double hoisting control system as claimed in claim 2, it is characterized in that, described hydraulic valve bank (40) comprises selector valve (48), on oil circuit on oil circuit between relative two control ends of oil outlet end to the first hydraulic control main valve (14) of described the first shuttle valve (41) and the second shuttle valve (42) and between relative two control ends of oil outlet end to the second hydraulic control main valve (24) of the 3rd shuttle valve (43) and the 4th shuttle valve (44), be respectively arranged with described selector valve (48), described selector valve (48) selectivity is by oil circuit oil-feed or the oil return at its place.
4. double hoisting control system as claimed in claim 3, is characterized in that, described selector valve (48) is solenoid directional control valve, and described solenoid directional control valve comprises the return opening being communicated with fuel tank (T0).
5. double hoisting control system as claimed in claim 2, is characterized in that, on described the first compensation oil circuit (30) and the second compensation oil circuit (32), is provided with the switch valve (34) with on-off function.
6. double hoisting control system as claimed in claim 5, it is characterized in that, described switch valve (34) is pilot operated directional control valve, comprise liquid controling cavity and spring cavity, described liquid controling cavity is communicated with oil inlet end and the oil outlet end of described pilot operated directional control valve, and described spring cavity is connected with fuel tank (T0) by having the control cock (36) of on-off function.
7. double hoisting control system as claimed in claim 6, is characterized in that, described control cock (36) comprises a hydraulic control end, and described hydraulic valve bank (40) also comprises described oil inlet end E
1, oil inlet end E
3, oil inlet end E
4and oil inlet end E
6in the high pressure oil at arbitrary place export the comparison valve group of the hydraulic control end of described control cock (36) to.
8. double hoisting control system as claimed in claim 7, is characterized in that, described relatively valve group comprise the 5th shuttle valve (45), respectively with described oil inlet end E
1with oil inlet end E
3the 6th shuttle valve (46) connecting, respectively with described oil inlet end E
4with oil inlet end E
6the 7th shuttle valve (47) connecting, the oil outlet end of described the 6th shuttle valve (46) and the 7th shuttle valve (47) is connected to respectively two oil inlet ends of the 5th shuttle valve (45), and the oil outlet end of described the 5th shuttle valve (45) is connected to the hydraulic control end of described control cock (36).
9. a construction machinery and equipment, is characterized in that, this project machinery comprises the double hoisting control system described in claim 1-8 any one.
10. construction machinery and equipment as claimed in claim 9, is characterized in that, described construction machinery and equipment is subterranean continuous wall hydraulic grab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320513864.4U CN203428832U (en) | 2013-08-21 | 2013-08-21 | Double-winch control system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320513864.4U CN203428832U (en) | 2013-08-21 | 2013-08-21 | Double-winch control system and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203428832U true CN203428832U (en) | 2014-02-12 |
Family
ID=50057883
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320513864.4U Expired - Lifetime CN203428832U (en) | 2013-08-21 | 2013-08-21 | Double-winch control system and engineering machinery |
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| Country | Link |
|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434961A (en) * | 2013-08-21 | 2013-12-11 | 上海中联重科桩工机械有限公司 | Double-winch control system and engineering machinery |
| CN110921538A (en) * | 2019-12-23 | 2020-03-27 | 三一汽车起重机械有限公司 | Hoisting system and crane |
| CN118564507A (en) * | 2024-08-02 | 2024-08-30 | 中联重科股份有限公司 | New energy work machine driving device and new energy work machine |
-
2013
- 2013-08-21 CN CN201320513864.4U patent/CN203428832U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434961A (en) * | 2013-08-21 | 2013-12-11 | 上海中联重科桩工机械有限公司 | Double-winch control system and engineering machinery |
| CN103434961B (en) * | 2013-08-21 | 2015-09-30 | 上海中联重科桩工机械有限公司 | double-winch control system and engineering machinery |
| CN110921538A (en) * | 2019-12-23 | 2020-03-27 | 三一汽车起重机械有限公司 | Hoisting system and crane |
| CN118564507A (en) * | 2024-08-02 | 2024-08-30 | 中联重科股份有限公司 | New energy work machine driving device and new energy work machine |
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