CN103742474A - Tower crane, tower crane hoist system and hydraulic station - Google Patents
Tower crane, tower crane hoist system and hydraulic station Download PDFInfo
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- CN103742474A CN103742474A CN201410006552.3A CN201410006552A CN103742474A CN 103742474 A CN103742474 A CN 103742474A CN 201410006552 A CN201410006552 A CN 201410006552A CN 103742474 A CN103742474 A CN 103742474A
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Abstract
The invention relates to the technical field of safety control of tower crane hoist systems, and discloses a tower crane, a tower crane hoist system and a hydraulic station. The hydraulic station comprises an oil tank and a plurality of hoist control oil paths, wherein each hoist control oil path comprises a motor device, a brake and an oil pump device communicated with the oil tank; the first oil port of each motor device is communicated with the first oil port of each oil pump device, and the second oil port of each motor device is communicated with the second oil port of each oil pump device; each hoist control oil path further comprises an emergency oil path of which one end is communicated with the first oil port of each motor device and the other end is communicated with the second oil port of each motor device, a control valve for controlling the on-off states of each emergency oil path and an oil path in each motor device, and an emergency oil supply oil path of which one end is communicated with the oil inlet of each brake and the other end is communicated with the oil tank; each emergency oil supply oil path is provided with an emergency manual pump. By adopting the tower crane of the tower crane hoist system provided with the hydraulic station, a sling load can be unloaded onto an unloading ground when a power source of the tower crane fails, thereby achieving high working safety.
Description
Technical field
The present invention relates to tower machine hoisting system safety control technology field, particularly a kind of tower machine, tower machine hoisting system and hydraulic station.
Background technique
Tower machine, tower crane, is widely used in the engineering fields such as building.
The tower facility of fully hydraulic driven have the following advantages: a, without external power supply, self-powered; B, operate steadily, mechanical shock is little; C, stepless change, speed governing is convenient; D, by setting hydraulic system Maximum operating pressure, easily realize overload protection.Therefore, the extensive use of hydraulic transmission technology in the design of tower machine becomes an important research direction.
As shown in Figure 1, the principle that the tower machine of fully hydraulic driven of the prior art drives is: by diesel engine 01, provide power source, by one minute several transfer case 02, can drive a plurality of oil pump device 03 work, during each oil pump device 03 work, drive its corresponding motor apparatus 04 work, motor apparatus 04 drives 06 action of corresponding reel by speed reducer 05, thereby realizes the elevator action of each great institutions in tower machine.
As shown in Figure 2, Fig. 2 is the asphalt principle figure of the hydraulic station of a kind of tower machine hoisting system of the prior art.
The break 08 of a set of oil pump device 03, motor apparatus 04 and motor apparatus 04 of take is example, and particularly, the hydraulic fluid port A of oil pump device 03 is communicated with the hydraulic fluid port a of motor apparatus 04, and the hydraulic fluid port B of oil pump device 03 is communicated with the hydraulic fluid port b of motor apparatus 04; During work, diesel engine 01 drives oil pump device 03 work by transfer case 02, oil pump device 03 oil suction from fuel tank 09, and be break 08 fuel feeding by a control valve group 07, break 08 is opened motor apparatus 04, when hydraulic oil flows to the hydraulic fluid port a of motor apparatus 04 from the hydraulic fluid port A of oil pump device 03, and then while flowing back into the hydraulic fluid port B of oil pump device 03 by the hydraulic fluid port b of motor apparatus 04, between motor apparatus 04 and oil pump device 03, form a closed circulating oil path, motor apparatus 04 drives its corresponding reel 06 to realize the action of a direction by speed reducer 05; When hydraulic oil flows out from the hydraulic fluid port B of oil pump device 03, flow to the hydraulic fluid port b of motor apparatus 04, and then while flowing back into the hydraulic fluid port A of oil pump device 03 by the hydraulic fluid port a of motor apparatus 04, a closed circulating oil path of same formation between motor apparatus 04 and oil pump device 03, motor apparatus 04 drives its corresponding reel 06 to realize the action of another direction by speed reducer 05; When oil pump device 03 is not worked, oil pump device 03 is to break 08 fuel feeding, the closed motor apparatus 04 of break 08, and the oil circuit between motor apparatus 04 and oil pump device 03 can not form closed circulation oil circuit, and hoisting mechanism corresponding in tower machine just cannot move.
In above-mentioned tower machine, if tower machine is when power source fault appears in when work, oil pump device 03 can not be worked, cannot be to break 08 fuel feeding, and then the closed brake motor device 04 of break 08, hoisting mechanism corresponding in tower machine just cannot move.If now there is lift heavy on the suspension hook of tower machine, the lift heavy of tower machine cannot unload before the power source reparation of tower machine, can only let alone stagnant in the air, yet lift heavy is always stagnant in there is very large potential safety hazard in the air, causes the Security of tower machine operation lower.
Summary of the invention
The invention provides a kind of tower machine, tower machine hoisting system and hydraulic station, use the tower machine of the tower machine hoisting system with above-mentioned hydraulic station, job security is higher.
For achieving the above object, the invention provides following technological scheme:
A kind of hydraulic station of tower machine hoisting system, comprise fuel tank and a plurality of rolling control oil circuit, described in each, rolling control oil circuit comprises motor apparatus, brakes the break of described motor apparatus and when work and provide the oil pump device of pressure hydraulic oil for described motor apparatus and break, and described oil pump device is communicated with fuel tank; The first hydraulic fluid port of described motor apparatus is communicated with the first hydraulic fluid port of described oil pump device, and the second hydraulic fluid port is communicated with the second hydraulic fluid port of described oil pump device; Described in each, rolling control oil circuit also comprises:
The emergent oil circuit that one end is communicated with the first hydraulic fluid port of described motor apparatus, the other end is communicated with the second hydraulic fluid port of described motor apparatus, during oil circuit conducting in described emergent oil circuit and described motor apparatus, the first hydraulic fluid port of described motor apparatus is communicated with the second hydraulic fluid port of described motor apparatus;
Control the control valve of break-make between the oil circuit in described emergent oil circuit and described motor apparatus;
The emergent oil feeding line that one end is communicated with the filler opening of described break, the other end is communicated with described fuel tank, described emergent oil feeding line is provided with emergent hand pump.
Employing has in the tower machine of tower machine hoisting system of above-mentioned hydraulic station, when power source is normally worked, oil pump device is oil suction from fuel tank, and be break fuel feeding, break is opened motor apparatus, make motor in the motor apparatus state in working, when hydraulic oil flows to the first hydraulic fluid port of motor apparatus from the first hydraulic fluid port of oil pump device, and then while flowing back into the second hydraulic fluid port of oil pump device by the second hydraulic fluid port of motor apparatus, between motor apparatus and oil pump device, form a closed circulating oil path, the motor of motor apparatus drives its corresponding reel to realize the action of a direction by speed reducer, when hydraulic oil flows out from the second hydraulic fluid port of oil pump device, flow to the second hydraulic fluid port of motor apparatus, and then while flowing back into the first hydraulic fluid port of oil pump device by the first hydraulic fluid port of motor apparatus, a closed circulating oil path of same formation between motor apparatus and oil pump device, the motor of motor apparatus drives its corresponding reel to realize the action of another direction by speed reducer, when breaking down, power source cause oil pump device not worked, and while thering is lift heavy on the suspension hook of tower machine, can hydraulic oil be pressed in the oil cylinder of break by the emergent hand pump in emergent oil feeding line, and then force break to be opened, the state of the motor that makes motor apparatus in rotating, then operation control valve is connected emergent oil circuit, the first hydraulic fluid port of motor apparatus and the second hydraulic fluid port of motor apparatus are communicated with, the oil circuit of motor apparatus and emergent oil circuit form a closed circulation oil circuit, the gravity of lift heavy passes through reel, speed reducer is applied on motor apparatus, and then drive motor device work, the lift heavy ground that slow decreasing extremely can unload immediately.
So employing has the tower machine of the tower machine hoisting system of above-mentioned hydraulic station, even while having lift heavy on the suspension hook of tower machine when the power source of tower machine breaks down, also lift heavy can be offloaded to the ground that can unload, and has improved the job security of tower machine.
Preferably, described control valve comprises the stop valve being arranged in described emergent oil circuit.Stop valve is arranged on the break-make of controlling emergent oil circuit in emergent oil circuit.
Preferably, the control valve of the described emergent oil circuit break-make of described control comprises two tee ball valves; In a described tee ball valve, No. one port is communicated with the first hydraulic fluid port of described motor apparatus, and No. two port is communicated with the first hydraulic fluid port of described oil pump device, and No. three port is communicated with one end of described emergent oil circuit; Described in another, in tee ball valve, No. one port is communicated with the second hydraulic fluid port of described motor apparatus, and No. two port is communicated with the second hydraulic fluid port of described oil pump device, and No. three port is communicated with the other end of described emergent oil circuit.
Preferably, described in each, tee ball valve is T-shaped tee ball valve, and under a kind of state, in described tee ball valve, a port is communicated with No. two ports, and port and No. two ports all with No. three port isolation; Under another kind of state, in described tee ball valve, a port is communicated with No. three ports, and port and No. three ports all with No. two port isolation.
Preferably, described in each, tee ball valve is L-type tee ball valve, under a kind of state, in described tee ball valve, a port is communicated with No. two ports, and with No. three port isolation, under another kind of state, a described port be communicated with No. three ports and with No. two port isolation.
Preferably, in described emergent oil circuit, a throttle valve is set.
The present invention also provides a kind of tower machine hoisting system, and any hydraulic station providing in technique scheme is provided.Because above-mentioned hydraulic station can improve the job security of tower machine, above-mentioned tower machine hoisting system also can improve the job security of tower machine.
The present invention also provides a kind of tower machine, and any tower machine hoisting system providing in technique scheme is provided.The job security of this tower machine is higher.
Accompanying drawing explanation
Fig. 1 is the principle schematic that the hoisting system of a kind of tower machine in prior art drives;
Fig. 2 is the asphalt principle figure of the hydraulic station of a kind of tower machine hoisting system of the prior art;
A kind of asphalt principle schematic diagram of the hydraulic station that Fig. 3 provides for the embodiment of the present invention;
The another kind of asphalt principle schematic diagram of the hydraulic station that Fig. 4 provides for the embodiment of the present invention;
View when Fig. 5 a is a kind of working state of L-type tee ball valve between each port;
View when Fig. 5 b is the another kind of working state of L-type tee ball valve between each port;
View when Fig. 6 a is a kind of working state of T-shaped tee ball valve between each port;
View when Fig. 6 b is the another kind of working state of T-shaped tee ball valve between each port.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiments.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 3 and Fig. 4, wherein, a kind of asphalt principle schematic diagram of the hydraulic station that Fig. 3 provides for the embodiment of the present invention; The another kind of asphalt principle schematic diagram of the hydraulic station that Fig. 4 provides for the embodiment of the present invention.
The tower machine of fully hydraulic driven drives the tower machine hoisting system of tower machine by hydraulic station, and then the elevator of realizing each great institutions in tower machine moves, especially drive the suspension hook of tower machine to carry out lift heavy, during the operation of tower machine hoisting system, for the Processing capacity of various cases of emergency, be directly connected to the height of the work safety of tower machine; The principle that the tower machine of fully hydraulic driven is driven is: the work that the diesel engine of tower machine is each device in tower machine hoisting system as power source provides power, diesel engine drives a plurality of oil pump devices to work by one minute several transfer case, during each oil pump device work, drive its corresponding motor apparatus work, the motor of motor apparatus drives corresponding reel to move by speed reducer, thereby realizes the elevator action of the mechanism that in tower machine, this reel is corresponding.
As shown in Figure 3, the present embodiment provides a kind of hydraulic station of tower machine hoisting system, and this hydraulic station comprises fuel tank 7 and a plurality of rolling control oil circuit; Wherein, each rolling control oil circuit comprises that the break 4 of motor in motor apparatus 2, brake motor device 2 and when work provide the oil pump device 1 of pressure hydraulic oil for motor apparatus 2 and break 4, between break 4 and oil pump device 1, can be communicated with by a control valve group 3, so that to controlling oil-feed and the draining of above-mentioned break 4, oil pump device 1 is communicated with fuel tank 7, and oil pump device 1 comprises elevator oil pump and the valve group corresponding with elevator oil pump; Motor apparatus 2 comprises motor and corresponding valve group, and the first hydraulic fluid port a of motor apparatus 2 is communicated with the first hydraulic fluid port A of oil pump device 1, and the second hydraulic fluid port b is communicated with the second hydraulic fluid port B of oil pump device 1; Each rolling control oil circuit also comprises:
The emergent oil circuit 6 that one end is communicated with the first hydraulic fluid port a of motor apparatus 2, the other end is communicated with the second hydraulic fluid port b of motor apparatus 2, during oil circuit conducting in emergent oil circuit 6 and motor apparatus 2, the first hydraulic fluid port a of motor apparatus 2 is communicated with the second hydraulic fluid port b of motor apparatus 2;
Control the control valve of break-make between the oil circuit in emergent oil circuit 6 and motor apparatus 2;
The emergent oil feeding line that one end is communicated with the filler opening of break 4, the other end is communicated with fuel tank 7, emergent oil feeding line is provided with emergent hand pump 5.
Employing has in the tower machine of tower machine hoisting system of above-mentioned hydraulic station, when power source is normally worked, oil pump device 1 oil suction from fuel tank 7, and be break 4 fuel feeding, break 4 is opened motor apparatus 2, make motor in motor apparatus 2 state in working, when hydraulic oil flows to the first hydraulic fluid port a of motor apparatus 2 from the first hydraulic fluid port A of oil pump device 1, and then while flowing back into the second hydraulic fluid port B of oil pump device 1 by the second hydraulic fluid port b of motor apparatus 2, between motor apparatus 2 and oil pump device 1, form a closed circulating oil path, the motor of motor apparatus 2 drives its corresponding reel to realize the action of a direction by speed reducer, when hydraulic oil flows out from the second hydraulic fluid port B of oil pump device 1, flow to the second hydraulic fluid port b of motor apparatus 2, and then while flowing back into the first hydraulic fluid port A of oil pump device 1 by the first hydraulic fluid port a of motor apparatus 2, a closed circulating oil path of same formation between motor apparatus 2 and oil pump device 1, the motor of motor apparatus 2 drives its corresponding reel to realize the action of another direction by speed reducer, when breaking down, power source cause oil pump device 1 not worked, and while thering is lift heavy on the suspension hook of tower machine, can hydraulic oil be pressed in the oil cylinder of break 4 by the emergent hand pump 5 in emergent oil feeding line, and then force break 4 to be opened, the state of the motor that makes motor apparatus 2 in rotating, then operation control valve is connected emergent oil circuit 6, the first hydraulic fluid port a of motor apparatus 2 and the second hydraulic fluid port b of motor apparatus 2 are communicated with, the oil circuit of motor apparatus 2 and emergent oil circuit 6 are in conjunction with forming a closed circulation oil circuit, simultaneously, the gravity of lift heavy passes through reel, speed reducer is applied on motor apparatus 2, and then drive motor device 2 work, the lift heavy ground that slow decreasing extremely can unload immediately.
So employing has the tower machine of the tower machine hoisting system of above-mentioned hydraulic station, even while having lift heavy on the suspension hook of tower machine when the power source of tower machine breaks down, also lift heavy can be offloaded to the ground that can unload, and has improved the job security of tower machine.
In above-described embodiment, in the inner valve group arranging of oil pump device 1 of hydraulic station, the combining form of oil circuit is not limited to the oil channel structures shown in Fig. 3 and Fig. 4, the oil circuit combining form that can also adopt according to the actual requirements comparative maturity in other prior aries, repeats no more here.
In like manner, in above-described embodiment, in the inner valve group arranging of motor apparatus 2 of hydraulic station, the combining form of oil circuit is not limited to the oil channel structures shown in Fig. 3 and Fig. 4 equally, can adopt according to the actual requirements equally the oil circuit combining form of comparative maturity in other prior aries, repeats no more here.
In above-described embodiment, the combining form of the control valve group 3 between break 4 and oil pump device 1 also can be varied, is not limited to the combining form shown in Fig. 3 and Fig. 4.
The control valve of emergent oil circuit 6 break-makes of control that propose in above-described embodiment can have multiple choices mode.
In a kind of optional mode of execution, above-mentioned control valve can comprise the stop valve being arranged in described emergent oil circuit.Stop valve is arranged in emergent oil circuit, when stop valve is when opening, the first hydraulic fluid port a of motor apparatus 2 and the second hydraulic fluid port b connect, when stop valve is during in off-position, emergent oil circuit 6 is blocked in the position that stop valve is set, and then the closed circulation oil circuit of the oil circuit of motor apparatus 2 and 6 formation of emergent oil circuit disconnects.
Above-mentioned stop valve can be ball valve.
In a kind of preferred implementation, as shown in Fig. 5 a and Fig. 5 b and Fig. 6 a and Fig. 6 b, above-mentioned control valve can also comprise two tee ball valves, and each tee ball valve has three ports, for ease of describing, be respectively a port c, No. two port d, No. three port e; In a tee ball valve, No. one port c is communicated with the first hydraulic fluid port a of motor apparatus 2, and No. two port d is communicated with the first hydraulic fluid port A of oil pump device 1, and No. three port e is communicated with one end of emergent oil circuit 6; In another tee ball valve, No. one port c is communicated with the second hydraulic fluid port b of motor apparatus 2, and No. two port d is communicated with the second hydraulic fluid port B of oil pump device 1, and No. three port e is communicated with the other end of emergent oil circuit 6.
As shown in Fig. 6 a and Fig. 6 b, each tee ball valve in above-mentioned mode of execution can be T-shaped tee ball valve; As shown in Figure 6 a, under a kind of state, in tee ball valve, a port c is communicated with No. two port d, and port and No. two ports all with No. three port isolation, two tee ball valves coordinate, the first hydraulic fluid port a of motor apparatus 2 is communicated with the first hydraulic fluid port A of oil pump device 1, the second hydraulic fluid port b of motor apparatus 2 is communicated with the second hydraulic fluid port B of oil pump device 1, and the two ends of the first hydraulic fluid port a of motor apparatus 2 and the second hydraulic fluid port b and emergent oil circuit 6 are cut off; Under another kind of state, in tee ball valve, a port c is communicated with No. three port e, and a port c and No. three port e all isolate with No. two port d, two tee ball valves coordinate, realize the first hydraulic fluid port a of motor apparatus 2 and the conducting between the second hydraulic fluid port b and emergent oil circuit 6, make oil circuit and 6 conductings of emergent oil circuit in motor apparatus 2 form closed circulating oil path, the first hydraulic fluid port A of the first hydraulic fluid port a of motor apparatus 2 and oil pump device 1 is cut off simultaneously, the second hydraulic fluid port B of the second hydraulic fluid port b of motor apparatus 2 and oil pump device 1 is cut off simultaneously.
Therefore,, when tee ball valve is T-shaped tee ball valve, can realize the break-make between the oil circuit in emergent oil circuit 6 and motor apparatus 2 by controlling the state of spool in two tee ball valves.
Certainly, as shown in Fig. 5 a and Fig. 5 b, each tee ball valve in above-mentioned mode of execution can also be L-type tee ball valve, under a kind of state, in two tee ball valves, a port c of each tee ball valve is communicated with No. two port d, and with No. three port e isolation, two tee ball valves coordinate, the first hydraulic fluid port a of motor apparatus 2 is communicated with the first hydraulic fluid port A of oil pump device 1, the second hydraulic fluid port b of motor apparatus 2 is communicated with the second hydraulic fluid port B of oil pump device 1, and the two ends of the first hydraulic fluid port a of motor apparatus 2 and the second hydraulic fluid port b and emergent oil circuit 6 are cut off; Under another kind of state, No. one port c is communicated with No. three port e, and with No. two port d isolation, two tee ball valves coordinate, realize the first hydraulic fluid port a of motor apparatus 2 and the conducting between the second hydraulic fluid port b and emergent oil circuit 6, make oil circuit and 6 conductings of emergent oil circuit in motor apparatus 2 form closed circulating oil path, the first hydraulic fluid port A of the first hydraulic fluid port a of motor apparatus 2 and oil pump device 1 is cut off simultaneously, the second hydraulic fluid port B of the second hydraulic fluid port b of motor apparatus 2 and oil pump device 1 is cut off simultaneously.
Therefore,, when tee ball valve is L-type tee ball valve, also can realize the break-make between the oil circuit in emergent oil circuit 6 and motor apparatus 2 by controlling the state of spool in two tee ball valves.
Please refer to Fig. 3 and Fig. 4, on the basis of the respective embodiments described above, after power source fault, for the rate of descent in the lift heavy decline process on control tower machine suspension hook, the size of hydraulic fluid flow rate in the closed circulation oil circuit that oil circuit in the emergent oil circuit 6 of needs control and motor apparatus 2 is combined to form, in a kind of preferred implementation, in emergent oil circuit 6, a throttle valve 61 is set.By throttle valve 61, control the size of hydraulic fluid flow rate in emergent oil circuit 6, and then control the size of hydraulic fluid flow rate in the closed circulation oil circuit that emergent oil circuit 6 and oil circuit in motor apparatus 2 be combined to form, and then control the rotating speed of motor in motor apparatus 2, finally realize the control to lift heavy rate of descent, improve further the Security of tower machine work.
In addition, the embodiment of the present invention also provides a kind of tower machine hoisting system, and any hydraulic station providing in technique scheme is provided.Because above-mentioned hydraulic station can improve the job security of tower machine, above-mentioned tower machine hoisting system also can improve the job security of tower machine.
In addition, the present invention also provides a kind of tower machine, and any tower machine hoisting system providing in technique scheme is provided.The job security of this tower machine is higher.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the embodiment of the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. the hydraulic station of a tower machine hoisting system, comprise fuel tank and a plurality of rolling control oil circuit, described in each, rolling control oil circuit comprises motor apparatus, brakes the break of described motor apparatus and when work and provide the oil pump device of pressure hydraulic oil for described motor apparatus and break, and described oil pump device is communicated with fuel tank; The first hydraulic fluid port of described motor apparatus is communicated with the first hydraulic fluid port of described oil pump device, and the second hydraulic fluid port is communicated with the second hydraulic fluid port of described oil pump device; It is characterized in that, described in each, rolling control oil circuit also comprises:
The emergent oil circuit that one end is communicated with the first hydraulic fluid port of described motor apparatus, the other end is communicated with the second hydraulic fluid port of described motor apparatus, during oil circuit conducting in described emergent oil circuit and described motor apparatus, the first hydraulic fluid port of described motor apparatus is communicated with the second hydraulic fluid port of described motor apparatus;
Control the control valve of break-make between the oil circuit in described emergent oil circuit and described motor apparatus;
The emergent oil feeding line that one end is communicated with the filler opening of described break, the other end is communicated with described fuel tank, described emergent oil feeding line is provided with emergent hand pump.
2. hydraulic station according to claim 1, is characterized in that, described control valve comprises the stop valve being arranged in described emergent oil circuit.
3. hydraulic station according to claim 1, is characterized in that, the control valve of the described emergent oil circuit break-make of described control comprises two tee ball valves; In a described tee ball valve, No. one port is communicated with the first hydraulic fluid port of described motor apparatus, and No. two port is communicated with the first hydraulic fluid port of described oil pump device, and No. three port is communicated with one end of described emergent oil circuit; Described in another, in tee ball valve, No. one port is communicated with the second hydraulic fluid port of described motor apparatus, and No. two port is communicated with the second hydraulic fluid port of described oil pump device, and No. three port is communicated with the other end of described emergent oil circuit.
4. hydraulic station according to claim 3, is characterized in that, described in each, tee ball valve is T-shaped tee ball valve, and under a kind of state, in described tee ball valve, a port is communicated with No. two ports, and port and No. two ports all with No. three port isolation; Under another kind of state, in described tee ball valve, a port is communicated with No. three ports, and port and No. three ports all with No. two port isolation.
5. hydraulic station according to claim 3, it is characterized in that, described in each, tee ball valve is L-type tee ball valve, under a kind of state, in described tee ball valve, a port is communicated with No. two ports, and with No. three port isolation, under another kind of state, a described port be communicated with No. three ports and with No. two port isolation.
6. according to the hydraulic station described in claim 1～5 any one, it is characterized in that, a throttle valve is set in described emergent oil circuit.
7. a tower machine hoisting system, is characterized in that, comprises the hydraulic station described in claim 1～6 any one.
8. a tower machine, is characterized in that, comprises tower machine hoisting system as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410006552.3A CN103742474A (en) | 2014-01-07 | 2014-01-07 | Tower crane, tower crane hoist system and hydraulic station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410006552.3A CN103742474A (en) | 2014-01-07 | 2014-01-07 | Tower crane, tower crane hoist system and hydraulic station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103742474A true CN103742474A (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410006552.3A Pending CN103742474A (en) | 2014-01-07 | 2014-01-07 | Tower crane, tower crane hoist system and hydraulic station |
Country Status (1)
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| CN (1) | CN103742474A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569111A (en) * | 2015-12-18 | 2016-05-11 | 柳州柳工挖掘机有限公司 | Excavator hydraulic system |
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| JP2004284691A (en) * | 2003-03-19 | 2004-10-14 | Kayaba Ind Co Ltd | Conveyance device |
| CN2931433Y (en) * | 2006-06-12 | 2007-08-08 | 上海三一科技有限公司 | Enclosed up-down hydraulic system |
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2014
- 2014-01-07 CN CN201410006552.3A patent/CN103742474A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004284691A (en) * | 2003-03-19 | 2004-10-14 | Kayaba Ind Co Ltd | Conveyance device |
| CN2931433Y (en) * | 2006-06-12 | 2007-08-08 | 上海三一科技有限公司 | Enclosed up-down hydraulic system |
| CN202400772U (en) * | 2011-12-30 | 2012-08-29 | 宁波凯荣船用机械有限公司 | Hoist device emergency descent oil circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105569111A (en) * | 2015-12-18 | 2016-05-11 | 柳州柳工挖掘机有限公司 | Excavator hydraulic system |
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Application publication date: 20140423 |
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