CN102874698B - Device and method for preventing rotary mechanism from automatically rotating - Google Patents
Device and method for preventing rotary mechanism from automatically rotating Download PDFInfo
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- CN102874698B CN102874698B CN201210421067.3A CN201210421067A CN102874698B CN 102874698 B CN102874698 B CN 102874698B CN 201210421067 A CN201210421067 A CN 201210421067A CN 102874698 B CN102874698 B CN 102874698B
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Abstract
The invention relates to a device for preventing a rotary mechanism from automatically rotating. The rotary mechanism comprises a rotary handle, an oil tank, a rotary brake (7), a rotary motor (6) and five oil holes (C-G), which form a hydraulic oil path. The device is characterized by comprising an electric proportion reducing valve (Y1), a switch valve (Y2) and a first hydraulic control part (3), wherein the first hydraulic control part (3) is arranged in the oil path from a first port (A) to the second oil hole (D), the electric proportion reducing valve (Y1) and the switch valve (Y2) are serially arranged in the oil path from the first oil hole (C) to the second oil hole (E), and the initial stages of the electric proportion reducing valve (Y1) and the switch valve (Y2) are electrically neutral stages. In addition, the invention also relates to a method for preventing the rotary mechanism from automatically rotating, and a crane comprising the device for preventing the rotary mechanism from automatically rotating.
Description
Technical field
The present invention relates to, for preventing the apparatus and method of the swing type mechanism generation automatic rotation of hoisting crane etc., especially, the invention still further relates to the hoisting crane that comprises this device.
Background technology
The problem that solves swing type mechanism generation automatic rotation is the important problem that each hydraulic pressure designer will face.On existing elevator machinery, along with the increase of tonnage, boom reach and weight is also in continuous lengthening, thus semi-girder to have certain side sway be also unavoidable, therefore exist in the horizontal direction and take center of gyration as axle center, the moment of torsion that semi-girder is the arm of force in the projected length of horizontal surface; When this causes that rotary handle does not activate opening rotary braking, occur the phenomenon of swing type mechanism generation automatic rotation, the lighter brings great difficulty to user installation workpiece, and severe one can cause serious safety misadventure.This phenomenon is more obvious during in lift heavy state at hoisting crane, brings greatly difficulty and dangerous finally to lifted weight object installation in position.Therefore, need to provide the device of anti-rotation stopping mechanism generation automatic rotation, to solve swing type mechanism generation automatic rotation problem.
Related electric proportional pressure-reducing valve refers in this application: flexible utilization current signal, by changing size of current, change the size of the restriction of reducing valve, and then the delivery pressure of realizing reducing valve changes along with curent change.
Summary of the invention
The mechanism that when the present invention has analyzed the swing type mechanism of hoisting crane rotary handle does not activate opening rotary braking, automatic rotation produces, thereby proposed to prevent the device of the swing type mechanism generation automatic rotation of hoisting crane, this device has been avoided the phenomenon of swing type mechanism generation automatic rotation effectively, has met the related needs of large-scale engineering machinery.
The object of this invention is to provide a kind of device of anti-rotation stopping mechanism generation automatic rotation, thereby overcome above-mentioned defect.Described swing type mechanism comprises with lower member: rotary handle, fuel tank, trainstop, rotary motor and five hydraulic fluid ports, and these parts form hydraulic circuit,
Wherein, described rotary motor comprises the first port and the second port, and described five hydraulic fluid ports are respectively the first hydraulic fluid port, the second hydraulic fluid port, the 3rd hydraulic fluid port, the 4th hydraulic fluid port, the 5th hydraulic fluid port,
The first hydraulic fluid port is pressure hydraulic fluid port; The second hydraulic fluid port and the 4th hydraulic fluid port are for input hydraulic fluid port, for being communicated with the first port and second port of rotary motor; The 3rd hydraulic fluid port is output oil port, for being communicated with trainstop, to be trainstop fuel feeding, controls the unlatching of trainstop; The 5th hydraulic fluid port mouth is return opening, for being communicated with fuel tank,
Wherein, described device comprises: electric proportional pressure-reducing valve, switch valve, the first hydraulic control parts;
Wherein, described the first hydraulic control parts are arranged on the oil circuit from the first port to the second hydraulic fluid port; Electricity proportional pressure-reducing valve and switch valve are in series arranged on from the oil circuit of the first hydraulic fluid port to the three hydraulic fluid ports, and
Wherein, the initial condition of electric proportional pressure-reducing valve and switch valve is electriferous state not.
Preferably, when swing type mechanism starts to turn round, switch valve obtain electric in can make pressure oil from the first hydraulic fluid port by the position of switch valve, but because rotary handle does not now activate, electricity proportional pressure-reducing valve not electric, the downstream pressure of described electric proportional pressure-reducing valve is also zero, thus trainstop do not open, anti-rotation stopping mechanism generation automatic rotation.
Preferably, electricity proportional pressure-reducing valve is when rotary handle just starts to activate, electric current is very little, delivery pressure is also very little, be not enough to push open trainstop and the first hydraulic control parts, the first port of rotary motor and the second port are linked up by the first hydraulic control parts, so that the traffic flow of rotary pump output is crossed the first hydraulic control parts, thereby make rotary motor in slip state, while having avoided not opening because of trainstop there is the phenomenon that builds the pressure or shake in rotary motor.
Preferably, electricity proportional pressure-reducing valve is when rotary handle angle continues to increase, the electric current of output increases and delivery pressure also increases, until promote the first hydraulic control parts, make the first hydraulic control parts in blocking state, the flow of rotary pump output enters rotary motor to produce pressure in oil circuit, and the delivery pressure of electric proportional pressure-reducing valve also increases simultaneously, push trainstop open, make to turn round smooth starting.
Preferably, described device also comprises the second hydraulic control parts, and described the second hydraulic control parts and the first hydraulic control unit Series ground arrange, and while stopping for starting at rotary motor, increases the rigidity of system, improves the revolution stationarity of system.
Preferably, described device also comprises damping arrangement, and described damping arrangement and electric proportional pressure-reducing valve and switch valve arrange in parallel, for increasing the stationarity of electric proportional pressure-reducing valve delivery pressure, eliminates and impacts.
Preferably, described the first hydraulic control parts are pilot operated valve device or electromagnetic valve.
Preferably, described pilot operated valve device is hydraulic control one-way valve.
Preferably, described the first hydraulic control parts are inserted valve.
Preferably, described device also comprises accessory control component and the second hydraulic control parts, wherein said the second hydraulic control parts and the first hydraulic control unit Series ground arrange, while stopping for starting at rotary motor, the rigidity of increase system, the revolution stationarity of raising system, described accessory control component and the first hydraulic control parts and the second hydraulic control Components Parallel Connection, for carrying out complementary operation to oil circuit.
Preferably, described the second hydraulic control parts are double linked one-way valve or damping hole.
Preferably, described switch valve is electromagnetic valve.
According to a further aspect in the invention, also provide a kind of hoisting crane, described hoisting crane comprises the device of aforementioned anti-rotation stopping mechanism generation automatic rotation described in any.
In accordance with a further aspect of the present invention, provide a kind of method of anti-rotation stopping mechanism generation automatic rotation, described swing type mechanism comprises with lower member: rotary handle, fuel tank, trainstop, rotary motor and five hydraulic fluid ports, and these parts form hydraulic circuit,
Wherein, described rotary motor comprises the first port and the second port, and described five hydraulic fluid ports are respectively the first hydraulic fluid port, the second hydraulic fluid port, the 3rd hydraulic fluid port, the 4th hydraulic fluid port, the 5th hydraulic fluid port,
The first hydraulic fluid port is pressure hydraulic fluid port; The second hydraulic fluid port and the 4th hydraulic fluid port are for input hydraulic fluid port, for being communicated with the first port and second port of rotary motor; The 3rd hydraulic fluid port is output oil port, for being communicated with trainstop, to be trainstop fuel feeding, controls the unlatching of trainstop; The 5th hydraulic fluid port mouth is return opening, for being communicated with fuel tank,
Wherein, in oil circuit, arrange with lower member: electric proportional pressure-reducing valve, switch valve and the first hydraulic control parts;
Wherein, described the first hydraulic control parts are arranged on the oil circuit from the first port to the second hydraulic fluid port; Electric proportional pressure-reducing valve and switch valve are in series arranged on from the oil circuit of the first hydraulic fluid port to the three hydraulic fluid ports, and
Wherein, the initial condition of electric proportional pressure-reducing valve and switch valve is electriferous state not.
Preferably, when swing type mechanism starts to turn round, make switch valve obtain electric in can make pressure oil from the first hydraulic fluid port by the position of switch valve, but because rotary handle does not now activate, electricity proportional pressure-reducing valve not electric, the downstream pressure of described electric proportional pressure-reducing valve is also zero, thus trainstop do not open, anti-rotation stopping mechanism generation automatic rotation.
Preferably, when electric proportional pressure-reducing valve is arranged in to rotary handle and has just started to activate, electric current is very little, delivery pressure is also very little, be not enough to push open trainstop and the first hydraulic control parts, the first port of rotary motor and the second port are linked up by the first hydraulic control parts, so that the traffic flow of rotary pump output is crossed the first hydraulic control parts, thereby make rotary motor in slip state, while having avoided not opening because of trainstop, rotary motor occurs building the pressure or jitter phenomenon.
Preferably, when electric proportional pressure-reducing valve is arranged in to rotary handle angle continuation increase, the electric current of output increases and delivery pressure also increases, until promote the first hydraulic control parts, make the first hydraulic control parts in blocking state, the flow of rotary pump output enters rotary motor to produce pressure in oil circuit, and the delivery pressure of electric proportional pressure-reducing valve also increases simultaneously, push trainstop open, make to turn round smooth starting.
Preferably, the second hydraulic control parts are also set, make described the second hydraulic control parts and the first hydraulic control unit Series and arrange, while stopping for starting at rotary motor, increase the rigidity of system, improve the revolution stationarity of system.
Preferably, be also provided with damping arrangement, described damping arrangement and electric proportional pressure-reducing valve and switch valve are arranged in parallel, for increasing the stationarity of electric proportional pressure-reducing valve delivery pressure, eliminate and impact.
Preferably, described the first hydraulic control parts are pilot operated valve device or electromagnetic valve.
Preferably, described pilot operated valve device is hydraulic control one-way valve.
Preferably, described the first hydraulic control parts are inserted valve.
Preferably, described device also comprises accessory control component and the second hydraulic control parts, wherein said the second hydraulic control parts and the first hydraulic control unit Series ground arrange, while stopping for starting at rotary motor, the rigidity of increase system, the revolution stationarity of raising system, described accessory control component and the first hydraulic control parts and the second hydraulic control Components Parallel Connection, for carrying out complementary operation to oil circuit.
Preferably, described the second hydraulic control parts are double linked one-way valve or damping hole.
Preferably, described switch valve is electromagnetic valve.
Advantage of the present invention and useful effect are the following aspects: of the present invention this for preventing that the device of the swing type mechanism generation automatic rotation of hoisting crane from being the opening time of utilizing electric proportional pressure-reducing valve to realize control trainstop to carry out anti-rotation stopping mechanism generation automatic rotation, improved comfort feature and the safety of user installation lifted weight object;
What the present invention relates to is this for preventing the device of the swing type mechanism generation automatic rotation of hoisting crane, can make rotary motor before drg is opened in slip state, thereby the phenomenon that elimination system builds the pressure or rotary motor is shaken.
Accompanying drawing explanation
Other features and advantages of the present invention obtain from following description and from related accompanying drawing, wherein:
Fig. 1 is the schematic diagram illustrating according to the device of the swing type mechanism generation automatic rotation that prevents hoisting crane of the present invention;
Fig. 2 is the schematic diagram illustrating according to the second embodiment of the device of the swing type mechanism generation automatic rotation that prevents hoisting crane of the present invention;
Fig. 3 is the schematic diagram illustrating according to the 3rd embodiment of the device of the swing type mechanism generation automatic rotation that prevents hoisting crane of the present invention.
The specific embodiment
Fig. 1 shows device and the hydraulic principle thereof that prevents the swing type mechanism generation automatic rotation of hoisting crane of the present invention.The swing type mechanism of hoisting crane generally includes rotary handle, fuel tank, trainstop 7 and rotary motor 6 etc.The parts of this device are connected in known manner, thereby form oil circuit (for example, the oil circuit of the swing type mechanism in existing hoisting crane).According to this principle, the device that prevents the swing type mechanism generation automatic rotation of hoisting crane comprises electric proportional pressure-reducing valve Y1, switch valve Y2 and the first hydraulic control parts 3 etc., thereby and utilize the electric proportional pressure-reducing valve Y1 be arranged in this device to realize anti-rotation stopping mechanism generation of the opening time automatic rotation of control trainstop 7, concrete principle of work is as follows:
The device of this anti-rotation stopping mechanism generation automatic rotation mainly contains five hydraulic fluid ports, is respectively the first hydraulic fluid port C, the second hydraulic fluid port D, the 3rd hydraulic fluid port E, the 4th hydraulic fluid port F and the 5th hydraulic fluid port G.The first hydraulic fluid port C is pressure hydraulic fluid port; The second hydraulic fluid port D, the 4th hydraulic fluid port F are input hydraulic fluid port, for being communicated with rotary motor, import and export; The 3rd hydraulic fluid port E is output oil port, is used to trainstop 7 fuel feeding, is controlling the unlatching of trainstop 7; The 5th hydraulic fluid port G is return opening, for being communicated with fuel tank.
Before driving engine does not start, electricity proportional pressure-reducing valve Y1 and switch valve Y2 are electriferous state not, when starting to turn round, switch valve Y2 obtains electric in right, and pressure oil passes through switch valve Y2 from the first hydraulic fluid port C, but because rotary handle does not now activate, electricity proportional pressure-reducing valve Y1 not electric, the downstream pressure of reducing valve is also zero, and trainstop 7 is not opened, and has effectively prevented swing type mechanism generation automatic rotation.
When rotary handle has just started to move, electricity proportional pressure-reducing valve Y1 electric current is very little, delivery pressure is also very little, (be for example not enough to push open drg 7 and the first hydraulic control parts 3, pilot operated valve device 3), rotary motor 6 ends A and B link up by pilot operated valve device 3, make the traffic flow of rotary pump output cross pilot operated valve device 3, thereby rotary motor is in slip state, and while having avoided not opening because of trainstop 7, the phenomenon that builds the pressure or shake appears in rotary motor.
Rotary handle angle continues to increase, the electric current of output also increases, electricity proportional pressure-reducing valve Y1 delivery pressure increases, be enough to promote pilot operated valve device 3, make it in the upper state that blocks, the flow of rotary pump output enters rotary motor to produce pressure in oil circuit, and the delivery pressure of electric proportional pressure-reducing valve Y1 also increases simultaneously, push trainstop 7 open, make to turn round smooth starting.
In this device, be also provided with the second hydraulic control parts 4 (for example, double linked one-way valve 4), its Main Function is: rotary motor starts while stopping, and increases the rigidity of system, improves the revolution stationarity of system; In addition, be also provided with damping arrangement 5 (being for example double linked one-way valve or damping hole) on oil return line, its Main Function is the stationarity that increases electric proportional pressure-reducing valve delivery pressure, eliminates and impacts.
In addition, the present invention also provides two alternate embodiment of the device of anti-rotation stopping mechanism generation automatic rotation, and in an alternative embodiment, the technology contents identical with technique scheme is omitted.
In the second embodiment of the device of anti-rotation stopping mechanism generation automatic rotation of the present invention, the first hydraulic control parts 3 are electromagnetic valve,, with electromagnetic valve, replace pilot operated valve device that is, to utilize electric signal to control to replace fluid control, concrete schematic diagram is shown in Fig. 2.
In the 3rd embodiment of the device of anti-rotation stopping mechanism generation automatic rotation of the present invention, the first hydraulic control parts 3 are inserted valve, that is, use inserted valve 3 to replace hydraulic control one-way valves; Or the second hydraulic control parts 4 are damping hole, that is, with damping hole 4, replace double linked one-way valve; In addition, described device also comprises accessory control component 3 ', and described accessory control component and the first hydraulic control parts and the second hydraulic control Components Parallel Connection, for carrying out complementary operation to oil circuit.The structure of accessory control component 3 ', setting and effect are known in the art, thereby omit relevant explanation.Concrete schematic diagram is shown in Fig. 3.
The different characteristic of each embodiment is combination with one another preferably, electromagnetic valve be for example set in the oil circuit of the second hydraulic fluid port D and the 4th hydraulic fluid port F as the first hydraulic control parts 3 and damping hole be set as the second hydraulic control parts 4, to do not need, these embodiments not thought to strict independent modification.
Claims (25)
1. a device for anti-rotation stopping mechanism generation automatic rotation, described swing type mechanism comprises with lower member: rotary handle, fuel tank, trainstop (7), rotary motor (6) and five hydraulic fluid ports (C-G), these parts form hydraulic circuits,
Wherein, described rotary motor (6) comprises the first port (A) and the second port (B), described five hydraulic fluid ports are respectively the first hydraulic fluid port (C), the second hydraulic fluid port (D), the 3rd hydraulic fluid port (E), the 4th hydraulic fluid port (F), the 5th hydraulic fluid port (G)
The first hydraulic fluid port (C) is pressure hydraulic fluid port; The second hydraulic fluid port (D) and the 4th hydraulic fluid port (F) are for input hydraulic fluid port, for being communicated with the first port and second port of rotary motor (6); The 3rd hydraulic fluid port (E) is output oil port, for being communicated with trainstop (7), to be trainstop (7) fuel feeding, controls the unlatching of trainstop (7); The 5th hydraulic fluid port (G) is return opening, for being communicated with fuel tank,
It is characterized in that, described device comprises: electric proportional pressure-reducing valve (Y1), switch valve (Y2), the first hydraulic control parts (3);
Wherein, described the first hydraulic control parts (3) are arranged on from the first port (A) to the oil circuit of the second hydraulic fluid port (D); Electricity proportional pressure-reducing valve (Y1) and switch valve (Y2) are in series arranged on the oil circuit from the first hydraulic fluid port (C) to the 3rd hydraulic fluid port (E), and
Wherein, the initial condition of electric proportional pressure-reducing valve (Y1) and switch valve (Y2) is electriferous state not.
2. device according to claim 1, it is characterized in that, when swing type mechanism starts to turn round, switch valve (Y2) obtains electric in making pressure oil pass through the position of switch valve (Y2) from the first hydraulic fluid port (C), but because rotary handle does not now activate, electric proportional pressure-reducing valve (Y1) not electric, the downstream pressure of described electric proportional pressure-reducing valve is also zero, thereby trainstop (7) is not opened, anti-rotation stopping mechanism generation automatic rotation.
3. device according to claim 2, it is characterized in that, electricity proportional pressure-reducing valve (Y1) is when rotary handle just starts to activate, electric current is very little, delivery pressure is also very little, be not enough to push open trainstop (7) and the first hydraulic control parts (3), first port (A) of rotary motor (6) and the second port (B) are linked up by the first hydraulic control parts (3), so that the traffic flow of rotary pump output is crossed the first hydraulic control parts (3), thereby make rotary motor (6) in slip state, while having avoided not opening because of trainstop (7) there is the phenomenon that builds the pressure or shake in rotary motor (6).
4. device according to claim 3, it is characterized in that, electricity proportional pressure-reducing valve (Y1) is when rotary handle angle continues to increase, the electric current of output increases and delivery pressure also increases, until promote the first hydraulic control parts (3), make the first hydraulic control parts (3) in blocking state, the flow of rotary pump output enters rotary motor (6) to produce pressure in oil circuit, the delivery pressure of electric proportional pressure-reducing valve (Y1) also increases simultaneously, push trainstop (7) open, make to turn round smooth starting.
5. according to the device described in any one in claim 1-4, it is characterized in that, described device also comprises the second hydraulic control parts (4), described the second hydraulic control parts (4) in series arrange with the first hydraulic control parts (3), while stopping for starting at rotary motor (6), the rigidity of increase system, the revolution stationarity of raising system.
6. according to the device described in any one in claim 1-4, it is characterized in that, described device also comprises damping arrangement (5), described damping arrangement and electric proportional pressure-reducing valve (Y1) and switch valve (Y2) arrange in parallel, for increasing the stationarity of electric proportional pressure-reducing valve delivery pressure, eliminate and impact.
7. device according to claim 1, is characterized in that, described the first hydraulic control parts (3) are pilot operated valve device or electromagnetic valve.
8. device according to claim 7, is characterized in that, described pilot operated valve device is hydraulic control one-way valve.
9. device according to claim 1, is characterized in that, described the first hydraulic control parts (3) are inserted valve.
10. device according to claim 8, it is characterized in that, described device also comprises accessory control component (3 ') and the second hydraulic control parts (4), wherein said the second hydraulic control parts (4) in series arrange with the first hydraulic control parts (3), while stopping for starting at rotary motor (6), the rigidity of increase system, the revolution stationarity of raising system, described accessory control component and the first hydraulic control parts and the second hydraulic control Components Parallel Connection, for carrying out complementary operation to oil circuit.
11. devices according to claim 5, is characterized in that, described the second hydraulic control parts (4) are double linked one-way valve or damping hole.
12. according to the device described in any one in claim 1-4, it is characterized in that, described switch valve (Y2) is electromagnetic valve.
13. 1 kinds of hoisting cranes, is characterized in that, described hoisting crane comprises the device of anti-rotation stopping mechanism generation automatic rotation in any one of the preceding claims wherein.
The method of 14. 1 kinds of anti-rotation stopping mechanism generation automatic rotations, described swing type mechanism comprises with lower member: rotary handle, fuel tank, trainstop (7), rotary motor (6) and five hydraulic fluid ports (C-G), these parts form hydraulic circuit,
Wherein, described rotary motor (6) comprises the first port (A) and the second port (B), described five hydraulic fluid ports are respectively the first hydraulic fluid port (C), the second hydraulic fluid port (D), the 3rd hydraulic fluid port (E), the 4th hydraulic fluid port (F), the 5th hydraulic fluid port (G)
The first hydraulic fluid port (C) is pressure hydraulic fluid port; The second hydraulic fluid port (D) and the 4th hydraulic fluid port (F) are for input hydraulic fluid port, for being communicated with the first port and second port of rotary motor (6); The 3rd hydraulic fluid port (E) is output oil port, for being communicated with trainstop (7), to be trainstop (7) fuel feeding, controls the unlatching of trainstop (7); The 5th hydraulic fluid port (G) is return opening, for being communicated with fuel tank,
It is characterized in that, in oil circuit, arrange with lower member: electric proportional pressure-reducing valve (Y1), switch valve (Y2) and the first hydraulic control parts (3);
Wherein, described the first hydraulic control parts (3) are arranged on from the first port (A) to the oil circuit of the second hydraulic fluid port (D); Electric proportional pressure-reducing valve (Y1) and switch valve (Y2) are in series arranged on the oil circuit from the first hydraulic fluid port (C) to the 3rd hydraulic fluid port (E), and
Wherein, the initial condition of electric proportional pressure-reducing valve (Y1) and switch valve (Y2) is electriferous state not.
15. methods according to claim 14, it is characterized in that, when swing type mechanism starts to turn round, switch valve (Y2) is obtained electric in making pressure oil pass through the position of switch valve (Y2) from the first hydraulic fluid port (C), but because rotary handle does not now activate, electric proportional pressure-reducing valve (Y1) not electric, the downstream pressure of described electric proportional pressure-reducing valve is also zero, thereby trainstop (7) is not opened, anti-rotation stopping mechanism generation automatic rotation.
16. methods according to claim 15, it is characterized in that, when electric proportional pressure-reducing valve (Y1) is arranged in to rotary handle and has just started to activate, electric current is very little, delivery pressure is also very little, be not enough to push open trainstop (7) and the first hydraulic control parts (3), first port (A) of rotary motor (6) and the second port (B) are linked up by the first hydraulic control parts (3), so that the traffic flow of rotary pump output is crossed the first hydraulic control parts (3), thereby make rotary motor (6) in slip state, while having avoided not opening because of trainstop (7) there is the phenomenon that builds the pressure or shake in rotary motor (6).
17. methods according to claim 16, it is characterized in that, when electric proportional pressure-reducing valve (Y1) is arranged in to rotary handle angle continuation increase, the electric current of output increases and delivery pressure also increases, until promote the first hydraulic control parts (3), make the first hydraulic control parts (3) in blocking state, the flow of rotary pump output enters rotary motor (6) to produce pressure in oil circuit, the delivery pressure of electric proportional pressure-reducing valve (Y1) also increases simultaneously, push trainstop (7) open, make to turn round smooth starting.
18. according to the method described in any one in claim 14-17, it is characterized in that, the second hydraulic control parts (4) are also set, described the second hydraulic control parts (4) and the first hydraulic control parts (3) are in series arranged, while stopping for starting at rotary motor (6), the rigidity of increase system, the revolution stationarity of raising system.
19. according to the method described in any one in claim 14-17, it is characterized in that, also be provided with damping arrangement (5), described damping arrangement and electric proportional pressure-reducing valve (Y1) and switch valve (Y2) are arranged in parallel, for increasing the stationarity of electric proportional pressure-reducing valve delivery pressure, eliminate and impact.
20. methods according to claim 14, is characterized in that, described the first hydraulic control parts (3) are pilot operated valve device or electromagnetic valve.
21. methods according to claim 20, is characterized in that, described pilot operated valve device is hydraulic control one-way valve.
22. methods according to claim 14, is characterized in that, described the first hydraulic control parts (3) are inserted valve.
23. methods according to claim 21, it is characterized in that, accessory control component (3 ') and the second hydraulic control parts (4) are also set, wherein said the second hydraulic control parts (4) in series arrange with the first hydraulic control parts (3), while stopping for starting at rotary motor (6), the rigidity of increase system, the revolution stationarity of raising system, described accessory control component and the first hydraulic control parts and the second hydraulic control Components Parallel Connection, for carrying out complementary operation to oil circuit.
24. methods according to claim 18, is characterized in that, described the second hydraulic control parts (4) are double linked one-way valve or damping hole.
25. according to the method described in any one in claim 14-17, it is characterized in that, described switch valve (Y2) is electromagnetic valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210421067.3A CN102874698B (en) | 2012-10-29 | 2012-10-29 | Device and method for preventing rotary mechanism from automatically rotating |
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| CN201210421067.3A CN102874698B (en) | 2012-10-29 | 2012-10-29 | Device and method for preventing rotary mechanism from automatically rotating |
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| CN102874698B true CN102874698B (en) | 2014-12-10 |
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| CN108343112B (en) * | 2018-02-13 | 2020-07-14 | 徐州徐工矿山机械有限公司 | Rotary unlocking hydraulic system of super-tonnage excavator |
| CN109534193B (en) * | 2018-12-17 | 2019-12-20 | 徐州重型机械有限公司 | Gyration alarm device for hoist |
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|---|---|---|---|---|
| CN201729610U (en) * | 2010-07-26 | 2011-02-02 | 徐州重型机械有限公司 | Rotary hydraulic system of crane and crane |
| CN102155447A (en) * | 2011-03-15 | 2011-08-17 | 徐州重型机械有限公司 | Rotating hydraulic system of crane and rotating buffer valve thereof |
| CN203173720U (en) * | 2012-10-29 | 2013-09-04 | 徐州重型机械有限公司 | Device for preventing swing mechanism from autorotation and crane using device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3989648B2 (en) * | 1999-04-09 | 2007-10-10 | 日立建機株式会社 | Swing control device |
| JP2006290561A (en) * | 2005-04-12 | 2006-10-26 | Shin Caterpillar Mitsubishi Ltd | Crane operating control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201729610U (en) * | 2010-07-26 | 2011-02-02 | 徐州重型机械有限公司 | Rotary hydraulic system of crane and crane |
| CN102155447A (en) * | 2011-03-15 | 2011-08-17 | 徐州重型机械有限公司 | Rotating hydraulic system of crane and rotating buffer valve thereof |
| CN203173720U (en) * | 2012-10-29 | 2013-09-04 | 徐州重型机械有限公司 | Device for preventing swing mechanism from autorotation and crane using device |
Non-Patent Citations (2)
| Title |
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| JP特开2000-296993A 2000.10.24 * |
| JP特开2006-290561A 2006.10.26 * |
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Address after: 221001 Jiangsu city of Xuzhou Province Economic and Technological Development Zone of High Road No. 68 Patentee after: Xuzhou Heavy Machinery Co., Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co., Ltd. |