WO2015136164A1 - Jib crane with capstan - Google Patents
Jib crane with capstan Download PDFInfo
- Publication number
- WO2015136164A1 WO2015136164A1 PCT/FR2015/000059 FR2015000059W WO2015136164A1 WO 2015136164 A1 WO2015136164 A1 WO 2015136164A1 FR 2015000059 W FR2015000059 W FR 2015000059W WO 2015136164 A1 WO2015136164 A1 WO 2015136164A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pulley
- cable
- groove
- lifting device
- drive
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
- B66D1/74—Capstans
- B66D1/7415—Friction drives, e.g. pulleys, having a cable winding angle of less than 360 degrees
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/44—Jib-cranes adapted for attachment to standard vehicles, e.g. agricultural tractors
Definitions
- the present invention relates to a device for lifting an object, more particularly a pump, located in a deep well, and also a lifting method implementing the device.
- Deep drilling is generally defined as well drilling where the water level is more than 20 meters below the surface.
- the pumps for this type of deep drilling which are conventionally electric, are arranged at the bottom of said boreholes and allow, by means of delivery pipes connected to said pumps, to pump water up to 80-90 meters deep. and bring it to the surface without much difficulty.
- a motorized winch is used on which a cable is wound permanently connecting said pump to the surface, said winch being of high capacity because the mass of said pump and discharge pipe full of water is important and it is necessary to exert on the cable a substantial tensile force to reassemble the assembly pump-cable - discharge pipe to the surface, for example for reasons of maintenance or of repair.
- the present invention aims to overcome the drawback mentioned above and to propose a pump lifting device disposed at the bottom of a deep well and connected to the surface by at least one cable, said lifting device being compact, easy and inexpensive to implement and not requiring the complete unwinding of the cable after raising said pump to the surface for use of the lifting device on another site for example.
- a device for lifting an object such as a pump, disposed at the bottom of a deep well and connected to the surface by a cable
- said lifting device comprising a frame, driving means capable of driving without slipping said cable and allow the ascent or descent of the object, the portion of the cable exiting said drive means then being neither engaged in another pulley nor subject to the tensile force due to the mass of said object, said lifting device being remarkable in that it comprises means of detachment to avoid for sure that said cable remains stuck in the drive means.
- the drive means comprise at least a first pulley pivotally mounted on said frame and a motor adapted to rotate the pulley and in that the cable is then able to engage at its free end in the throat of the pulley, the throat of the pulley being able to drive without slipping said cable and thus to allow the ascent or descent of the object during a rotation of the pulley, the part of the cable then leaving the pulley then not being engaged in another pulley nor subjected to the tensile force due to the mass of said object, the detent means then making it possible to avoid for sure that said cable remains stuck in the throat of the first pulley and continues to wrap around it.
- the drive means comprise at least one first pulley pivotally mounted on said frame, a motor capable of rotating the pulley and at least one second pulley coupled to the first pulley and a return pulley mounted free in rotation on said frame about an axis of rotation substantially parallel to that of said first and second pulleys and in that the cable is then able to engage by its free end successively in the respective grooves of the first pulley, of the return pulley and the second pulley, the respective grooves of the first and second pulleys being able to drive without slipping said cable and thus to allow the ascent or descent of the object during a rotation of the first and second pulleys, the part of the cable coming out of the second pulley then being neither engaged in another pulley nor subjected to the tensile force due to the mass of udit object, the means of detachment then to avoid for sure that said cable remains stuck in the throat of the second pulley and continues to wrap around the latter.
- said end of the cable is engaged in the groove of the first pulley so as to make a U-turn to exit said groove so as to substantially diametrically opposite, then in the groove of the return pulley so as to make a half-turn to exit said groove substantially diametrically opposite to return to engage in the groove of the second pulley which finally finally emerges substantially diametrically opposed towards the surface.
- the groove of the (or) first and / or second pulley (s) preferably comprises a V-shaped cross section capable of jamming the cable when engaged in said groove to ensure its drive.
- Each of the first and / or second pulley (s) is composed of two flanges each provided with a peripheral chamfer and assembled together so that said chamfers form the V-shaped groove.
- the groove of the (or) first and / or second pulley (s) may further receive a suitable surface coating to obtain a sufficient coefficient of adhesion and ensure the drive cable.
- Each of the first and / or second pulley (s) may also be made from a specific material having a coefficient of adhesion sufficient to ensure the drive of the cable.
- said unhooking means comprise at least two disengagement rollers pivotally mounted on the frame along axes of rotation substantially parallel to the axis of rotation of the (or) first and / or second pulley (s). ), said loosening rollers are disposed near said first and / or second pulley (s).
- said unhooking means comprise at least two blades integral with the frame and oriented tangentially with respect to the (or the) first and / or second pulley (s), each blade being provided with a tapered end adapted to come into contact with the inside of the groove of said pulley (a) (13A, 13B) to loosen the cable.
- the lifting device is adapted to be arranged on an arrow of a bracket preferably folding and embarked on a vehicle located in the immediate vicinity of the borehole.
- the invention also relates to a method of lifting an object, such as a pump, disposed at the bottom of a deep well and connected to the surface by one of the ends of a cable, with the lifting device according to the invention, said lifting method being remarkable in that it comprises at least the following steps:
- FIG. 1 is a vertical sectional view of a lifting device according to the invention of a pump disposed at the bottom of a deep borehole, said lifting device being secured to the boom of a bracket mounted on a vehicle;
- FIG. 2 is a front view of the lifting device of FIG. 1;
- FIG. 3 is a sectional view of the lifting device along the axis III-III 'of Figure 2;
- FIG. 4 is a detailed view of a pulley of FIG. 3.
- FIGS. 1 to 4 show a lifting device 1, according to the invention, of an object, more particularly a pump 2 and an unrepresented discharge pipe, arranged at the bottom of a deep and connected borehole 3. at the surface 5 by a cable 4.
- Said lifting device 1 comprises a frame 10, a first axis 11 pivotally mounted on said frame 10, a second axis 12 substantially parallel to said first axis 11 and integral with said frame 10, driving means comprising at least a first and a second pulleys 13A, 13B integral with the first axis 11 and preferably coupled, a return pulley 14 mounted free to rotate on said second axis 12 and a motor 15 adapted to rotate the first axis 11 and thus the first and second pulleys 13A, 13B, said motor 15 being advantageously coupled to a gearbox 16 disposed between the motor 15 and the first axis 11.
- the first and second pulleys 13A, 13B and the return pulley 14 are able to cooperate with the cable 4 connecting the pump 2 to the surface 5 of the borehole 3.
- Each of the first and second pulleys 13A, 13B includes a groove 17A, 17B such as guarantee the driving of the cable 4, and thus the raising or lowering of the pump 2 and its delivery pipe inside the bore 3, during a rotation of said first pulley 13A or second pulley 13B.
- the respective groove 17A, 17B of each of the first and second pulleys 13A, 13B comprises a V-shaped cross section.
- This specific V-shaped shape of the groove 17A, 17B allows, on the one hand, to receive cables of different diameters and, secondly, to jam the cable when engaged in said groove 17A, 17B to ensure its drive.
- Each of the first and second pulleys 13A, 13B is advantageously composed of two flanges 131 each provided with a peripheral chamfer 132 and assembled vis-à-vis by any appropriate means such as, for example, bolts 133, so that that the chamfers 132 form the groove 17A, 17B in v (see Figure 4).
- the lifting device 1 is arranged on an arrow 20 of a bracket 21 preferably folding and loaded on a vehicle 22 located in the immediate vicinity of the borehole 3 in which is arranged the pump 2 attached to the cable 4 by one of its ends 41, the latter being such that its free end 42 back to the surface 5.
- the cable is engaged by its end 42 around a deflection pulley 23 disposed at the end of the boom 20, then in the groove 17A of the first pulley 13A so as to make a semi-turn almost to exit said groove 17A substantially diametrically opposite.
- said cable 4 is engaged in the groove 24 of the deflection pulley 14 so as to make a U-turn to exit said groove 24 in a substantially diametrically opposed manner in order to return to engage in the groove 17B of the second pulley 13B which finally emerges almost diametrically opposite towards the ground taking into account the mass of the cable 4.
- it suffices to pull on the end 42 of the cable 4 issuing from the second pulley 13B to wedge said cable less in the groove 17B of said second pulley 13B of the lifting device 1.
- the return to the surface 5 or the descent -in the bore 3 of the pump 2 and its delivery pipe is obtained through the rotation of the first and second pulleys 13A, 13B, the latter being set in motion by the motor - gear unit 16.
- the advantage of the lifting device 1 according to the invention lies in the fact that after the second pulley 13B of the drive means the cable 4, which is no longer engaged in another pulley or subject to the effort of traction due to the mass of the displaced object rests entirely on the ground at the side of the lifting device 1 which therefore has no winding drum; said cable can therefore be easily recovered and wound by a worker present on the site and can thus be used the lifting device 1
- the lifting device 1 also preferably comprises loosening means 18, 19 making it possible to avoid for sure that said cable 4 remains stuck in the respective grooves 17A, 17B of the first and second pulleys 13 ⁇ , 13B and continuous to wrap around these.
- the unclamping means 18, 19 comprise at least two rollers pivotally mounted on the frame 1 along axes of rotation substantially parallel to the axes of rotation of the first and second pulleys 13A, 13B and return pulley 14. These loosening rollers 18, 19 are preferably arranged close to said pulleys 13A, 13B between the latter and the return pulley 14 and between the strands of the cable 4, when it is engaged around the first and second pulleys 13A, 13B and the deflection pulley 14, so as to prevent said cable 4 from being trapped in said respective grooves 17A, 17B of the first and second pulleys 13A, 13B (see FIG. 2).
- the unhooking roller 18 or 19, prevents the free end 42 of the cable 4 from the pulley 13B remains stuck in the throat 17B of the second pulley 13B and continues to wrap around the latter.
- the peeling roller 18 loosens the free end 42 cable 4 by deflecting it in the direction of the ground so that said cable is unwound on the surface 5 thus avoiding unnecessary unwinding of the cable after the complete rise of the pump 2 and its delivery pipe.
- the unhooking members 18, 19 may be two blades integral with the frame 1 and oriented tangentially with respect to the first and second pulleys 13A, 13B, each blade being provided with a tapered end capable of to come into contact with the interior of respective grooves 17A, 17B of said pulleys 13A, 13B to loosen the cable 4.
- This variant of the loosening devices 18, 19, which is very effective, has the disadvantage of being worn out rather quickly considering the contact between the blades and the groove 17A, 17B during the rotation of the latter.
- the lifting device 1 comprises measuring means (not shown) for the movement of the cable 4.
- These measuring means make it possible, for example, to know how far from the surface 5 the object to be lifted is find.
- These measuring means preferably comprise a revolution counter associated with one of the first and second pulleys 13A, 13B or 14. Indeed, knowing the winding diameter of said first and second pulleys 13A, 13B or 14 and the number of turns made by the latter, an operator can easily determine the length of cable 4 which has already been raised.
- the lifting device 1 is particularly compact and easy to manufacture and implement. Indeed, the lifting device 1, which is composed of simple elements and also inexpensive, avoids the complete winding of the cable 4 on a drum and therefore the complete unwinding. from this last to the result of the complete recovery of the pump 2 and its delivery pipe.
- the drive means of the lifting device 1 comprise only the first pulley.
- the cable is then able to engage at its free end only in the groove of the first pulley, said groove always being such that it makes it possible to guarantee the driving of the cable, and thus the raising or lowering of the pump, during a rotation of the first pulley, the cable being then, after the first pulley, not engaged in another pulley or subjected to the tensile force due to the mass of said object.
- This variant "extreme” is certainly very economical but it has a lower level of security. Indeed, if the cable inadvertently disengages the groove of the first pulley, the pump falls to the bottom of the borehole and can be damaged.
- the lifting device 1 applies more particularly to the raising or lowering of a pump 2 at the bottom of a deep borehole 3, but it can also be used for the handling of any other type of Industrial material.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MA39382A MA39382B1 (en) | 2014-03-13 | 2015-03-13 | Stem with capstan |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1452108 | 2014-03-13 | ||
FR1452108A FR3018512A1 (en) | 2014-03-13 | 2014-03-13 | POTENCE IN CABESTAN |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015136164A1 true WO2015136164A1 (en) | 2015-09-17 |
Family
ID=51293036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2015/000059 WO2015136164A1 (en) | 2014-03-13 | 2015-03-13 | Jib crane with capstan |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR3018512A1 (en) |
MA (1) | MA39382B1 (en) |
WO (1) | WO2015136164A1 (en) |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB169490A (en) * | 1920-06-17 | 1921-09-19 | Ane Pieter Schat | Improvements in and relating to blocks, pulley tackle, and like hoisting apparatus |
FR677148A (en) * | 1929-06-20 | 1930-03-04 | Hoist for goods, bicycles, etc. | |
DE495477C (en) * | 1928-03-21 | 1930-04-07 | Demag Akt Ges | Electric hoist with traction sheaves |
US3717325A (en) * | 1971-08-02 | 1973-02-20 | American Chain & Cable Co | Cable system |
DE29803423U1 (en) * | 1998-02-27 | 1998-05-14 | Ernst K. Spieth Gmbh, 73730 Esslingen | Drive for a pull rope |
US5996971A (en) * | 1990-10-23 | 1999-12-07 | Crouse; Gerald | Well pipe hoist and hoisting method |
US6027103A (en) * | 1997-03-03 | 2000-02-22 | Painter; Byron Wayne | Powerhead assembly and hoisting system |
US20080224111A1 (en) * | 2007-03-16 | 2008-09-18 | Mactaggart Scott (Holdings) Limited | Cable handling device |
US20100200529A1 (en) * | 2009-02-06 | 2010-08-12 | Vaquera Moises C | Removable Truck-Mounted Crane |
WO2011113168A1 (en) * | 2010-03-16 | 2011-09-22 | Flakes S.A. | Device for winding a flexible tie |
WO2012067521A1 (en) * | 2010-11-19 | 2012-05-24 | Huse Engineering As | Traction winch structure, an apparatus for a winch and use thereof |
-
2014
- 2014-03-13 FR FR1452108A patent/FR3018512A1/en active Pending
-
2015
- 2015-03-13 MA MA39382A patent/MA39382B1/en unknown
- 2015-03-13 WO PCT/FR2015/000059 patent/WO2015136164A1/en active Application Filing
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB169490A (en) * | 1920-06-17 | 1921-09-19 | Ane Pieter Schat | Improvements in and relating to blocks, pulley tackle, and like hoisting apparatus |
DE495477C (en) * | 1928-03-21 | 1930-04-07 | Demag Akt Ges | Electric hoist with traction sheaves |
FR677148A (en) * | 1929-06-20 | 1930-03-04 | Hoist for goods, bicycles, etc. | |
US3717325A (en) * | 1971-08-02 | 1973-02-20 | American Chain & Cable Co | Cable system |
US5996971A (en) * | 1990-10-23 | 1999-12-07 | Crouse; Gerald | Well pipe hoist and hoisting method |
US6027103A (en) * | 1997-03-03 | 2000-02-22 | Painter; Byron Wayne | Powerhead assembly and hoisting system |
DE29803423U1 (en) * | 1998-02-27 | 1998-05-14 | Ernst K. Spieth Gmbh, 73730 Esslingen | Drive for a pull rope |
US20080224111A1 (en) * | 2007-03-16 | 2008-09-18 | Mactaggart Scott (Holdings) Limited | Cable handling device |
US20100200529A1 (en) * | 2009-02-06 | 2010-08-12 | Vaquera Moises C | Removable Truck-Mounted Crane |
WO2011113168A1 (en) * | 2010-03-16 | 2011-09-22 | Flakes S.A. | Device for winding a flexible tie |
WO2012067521A1 (en) * | 2010-11-19 | 2012-05-24 | Huse Engineering As | Traction winch structure, an apparatus for a winch and use thereof |
Also Published As
Publication number | Publication date |
---|---|
FR3018512A1 (en) | 2015-09-18 |
MA39382A1 (en) | 2017-09-29 |
MA39382B1 (en) | 2018-04-30 |
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