CN102020213B - Method and device for controlling over-relaxation of wire rope in floating of winch - Google Patents
Method and device for controlling over-relaxation of wire rope in floating of winch Download PDFInfo
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- CN102020213B CN102020213B CN 201010521779 CN201010521779A CN102020213B CN 102020213 B CN102020213 B CN 102020213B CN 201010521779 CN201010521779 CN 201010521779 CN 201010521779 A CN201010521779 A CN 201010521779A CN 102020213 B CN102020213 B CN 102020213B
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- wire rope
- winch
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- elevator
- back pressure
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Abstract
The invention discloses a method and a device for controlling the over-relaxation of a wire rope in the floating of a winch. In the process of realizing floating relaxation by the gravity of a load, the wire rope is always in a pre-tightened state by applying a certain back pressure to the lifting side of the winch. A back pressure valve (7) or a one-way valve with a certain opening pressure is connected in series with oil paths of a floating control valve (2) and on the lifting side of a motor (1). When in a floating state, the winch still can pre-tighten the wire rope to a certain extent and avoid the failures of disorder of the wire ropes on the winch and loose strands of the wire ropes, thereby prolonging the service life of the wire rope.
Description
Technical field
The present invention relates to a kind of method of controlling excessive release of steel wire rope when winch floats, the invention still further relates to the device of the method that realizes this control excessive release of steel wire rope when winch floats.
Background technology
As shown in Figure 1, on rotary drilling rig, drilling tool carries out operation at the bottom of transferring to the hole by elevator, when utilizing elevator to be put into drilling tool near the position at the bottom of the hole, the operator opens floating control valve 2, control the hydraulic circuit short circuit of motor 1, motor two ends oil pressure pressure equates, under the application force of drilling tool 5 deadweights, elevator 3 drives revolution and transfers, at the bottom of drilling tool drops to the hole, this moment, the weight of drilling tool was born at the bottom of by the hole, elevator is in free state, is referred to as the winch floats state, can begin under this state to creep into.But in drilling process, steel rope 4 is sagging sometimes can occur putting phenomenon, makes the steel rope bending, and when steel rope bends to when touching the surface of drill stem state, the relative wire rope rotating of drilling tool has just caused steel rope undue wear and broken lot to damage; Moreover when elevator promoted again, excessive release of steel wire rope can cause to be wound around chaotic on reel and the damage steel rope.So all caused the fault of both having damaged service life that do not reach of steel rope.Before the present invention, mainly observe by operator's attention, timely operation, excessive release of steel wire rope phenomenon when preventing the winch floats state, but increased operator's labour intensity.
Summary of the invention
First technical matters to be solved by this invention is to provide a kind of under the state of winch floats, avoids the excessive release of steel wire rope phenomenon to occur, thereby plays the effect of protection steel rope, reduces the method for the control excessive release of steel wire rope when winch floats of operator's intensity.
Second technical matters to be solved by this invention is to provide a kind of device of realizing the method for this control excessive release of steel wire rope when winch floats.
In order to solve above-mentioned first technical matters, the method for control excessive release of steel wire rope when winch floats provided by the invention relying on the unsteady process of transferring of load deadweight, by giving to carry the certain back pressure of side on elevator, makes steel rope be in all the time Pre strained state.
When described elevator is motor-driven, when deadweight is transferred, give motor certain reverse voltage, make the elevator only can the tensioning steel rope, and can not overcome the strength that deadweight is fallen.
When described elevator is the hydraulic circuit driving, when deadweight is transferred, increase back pressure valve and energy storage at the floating control oil circuit, make elevator tensioning steel rope when quick condition, can make again drilling tool rely on deadweight to touch subdrilling hole, hole.
In order to solve above-mentioned second technical matters, the device of the method for excessive release of steel wire rope when realization control winding of rotary drilling rig provided by the invention floats, comprise motor and floating control valve, carry on described floating control valve and described motor and be in series with back pressure valve in the side oil circuit or with the check valve of certain response pressure.
Be connected with an energy storage or an oil sources pump between described floating control valve and described back pressure valve or the check valve with certain response pressure.
adopt method and the device thereof of the control excessive release of steel wire rope when winch floats of technique scheme, when the energising of floating control valve, the oil circuit two ends connection of control cock, under the application force of drilling tool deadweight, winching barrel drives revolution and transfers, after the pressure oil that MB goes out passes through the floating control valve, part is stored in energy storage, then arrive the MA mouth by back pressure valve, therefore the two ends of motor MB---MA has difference of pressure, the pressure extent is set by back pressure valve, pressure reduction can be by presetting pressure, reaching can either the tensioning steel rope, drilling tool relies on gravity energy to fall into the state that touches subdrilling hole, hole simultaneously, the effect of energy storage is the flow that replenishes the motor loss due to leakage, make and to keep certain hour to be in steel rope under quick condition collapsing tight state, avoid steel rope sagging and occurred putting.Therefore the present invention just avoids the wearing and tearing of restricting and contacting with drilling tool, and avoid being wound around on reel chaotic and the damage steel rope, steel rope has certain predetermincd tension all the time simultaneously, can avoid the broken lot of steel rope, comprehensive above factor the present invention can prevent from damaging the generation of steel rope fault, alleviates operator's labour intensity.
Description of drawings
Excessive release of steel wire rope phenomenon schematic diagram when Fig. 1 is existing winding of rotary drilling rig quick condition;
Fig. 2 is structural representation of the present invention.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
A kind of method of excessive release of steel wire rope when controlling winding of rotary drilling rig and floating, the process relying on the load deadweight to float and transfer by giving to carry the certain back pressure of side on elevator, makes steel rope be in all the time Pre strained state.When elevator is motor-driven, when deadweight is transferred, give motor certain reverse voltage, make the elevator only can the tensioning steel rope, and can not overcome the strength that the drilling tool deadweight is fallen.When described elevator is the hydraulic circuit driving, when deadweight is transferred, increase back pressure valve and energy storage at the floating control oil circuit, make elevator tensioning steel rope when quick condition, can make again drilling tool rely on deadweight to touch subdrilling hole, hole.
As shown in Figure 2, be in series with back pressure valve 7 carry the side oil circuit on floating control valve 2 and motor 1 in, be connected with an energy storage 6 between floating control valve 2 and back pressure valve 7.
referring to Fig. 2, when 2 energisings of floating control valve, the oil circuit two ends connection of floating control valve 2, under the application force of drilling tool 5 deadweights, elevator 3 drives motor 1 rotation and transfers, after the pressure oil that MB goes out passes through floating control valve 2, part is stored in energy storage 6, then arrive the MA mouth by back pressure valve 7, therefore the two ends of motor 1 MB---MA has difference of pressure, the pressure extent is set by back pressure valve 7, pressure reduction can be by presetting pressure, reaching can either the tensioning steel rope, drilling tool 5 relies on gravity energy to fall into the state that touches subdrilling hole, hole simultaneously, the effect of energy storage 6 is the flows that replenish motor 1 loss due to leakage, make and to keep certain hour to be in steel rope 4 under quick condition collapsing tight state, avoid steel rope 4 sagging and occurred putting.Therefore the present invention just avoids the wearing and tearing of restricting and contacting with drilling tool, and avoid being wound around on the reel of elevator 3 chaotic and damage steel rope 4, steel rope 4 has certain predetermincd tension all the time simultaneously, can avoid the broken lot of steel rope 4, comprehensive above factor the present invention can prevent from damaging the generation of steel rope fault, alleviates operator's labour intensity.
On oil circuit, back pressure valve 7 can use the check valve with certain response pressure to replace, and still belongs to this patent category.
This patent not only is useful on rotary drilling rig, and is applicable to the occasion on all application elevators.
Claims (1)
1. method of controlling excessive release of steel wire rope when winch floats, in the process that relies on the load deadweight to float and transfer, by giving to carry the certain back pressure of side on elevator, make steel rope be in all the time Pre strained state, it is characterized in that: when described elevator is the hydraulic circuit driving, when deadweight is transferred, increase back pressure valve and energy storage at the floating control oil circuit, make elevator tensioning steel rope when quick condition, can make again drilling tool rely on deadweight to touch subdrilling hole, hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010521779 CN102020213B (en) | 2010-10-27 | 2010-10-27 | Method and device for controlling over-relaxation of wire rope in floating of winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010521779 CN102020213B (en) | 2010-10-27 | 2010-10-27 | Method and device for controlling over-relaxation of wire rope in floating of winch |
Publications (2)
| Publication Number | Publication Date |
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| CN102020213A CN102020213A (en) | 2011-04-20 |
| CN102020213B true CN102020213B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010521779 Active CN102020213B (en) | 2010-10-27 | 2010-10-27 | Method and device for controlling over-relaxation of wire rope in floating of winch |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815633B (en) * | 2012-09-03 | 2015-04-22 | 上海中联重科桩工机械有限公司 | Control device for hydraulic winch and engineering machine |
| CN106365059A (en) * | 2016-08-30 | 2017-02-01 | 中煤科工集团西安研究院有限公司 | Hydraulic control system and method for winch of core drilling machine |
| CN106429666B (en) * | 2016-11-11 | 2018-09-28 | 太原理工大学 | Control method for the frictional super capacitor mine hoist of liquid electricity combination drive |
| CN110173255B (en) * | 2019-06-10 | 2022-11-04 | 北京三一智造科技有限公司 | Main winch floating control method and system |
| CN112645163B (en) * | 2020-11-10 | 2022-12-27 | 中国煤炭科工集团太原研究院有限公司 | Cable winding device and control method of cable winding device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2356018Y (en) * | 1998-11-12 | 1999-12-29 | 湖北省国营沙洋江东机械制造厂 | Speed regulating hoist |
| CN2649478Y (en) * | 2003-09-27 | 2004-10-20 | 宝山钢铁股份有限公司 | Rapid cable-laying device |
| CN201351094Y (en) * | 2009-01-16 | 2009-11-25 | 江苏淮阴船用机械有限公司 | Constant-tension control system of automatic mooring winch for ship |
| CN101734571B (en) * | 2010-01-06 | 2011-11-16 | 中化岩土工程股份有限公司 | Speed control method for free falling winch and device for implementing method |
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| CN102020213A (en) | 2011-04-20 |
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