EP0650919B1 - Apparatus for removing large-weight object lifting members - Google Patents
Apparatus for removing large-weight object lifting members Download PDFInfo
- Publication number
- EP0650919B1 EP0650919B1 EP94913816A EP94913816A EP0650919B1 EP 0650919 B1 EP0650919 B1 EP 0650919B1 EP 94913816 A EP94913816 A EP 94913816A EP 94913816 A EP94913816 A EP 94913816A EP 0650919 B1 EP0650919 B1 EP 0650919B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base
- slider
- heavy load
- mast
- sensor rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/38—Crane hooks adapted for automatic disengagement from loads on release of cable tensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
Abstract
Description
- The present invention relates to a device for dismounting a hoisting member such as a wire, cable, rope, or chain hoisting a heavy load, from the heavy load.
- After a heavy load such as a construction material used for construction works or civil engineering works is raised by a crane by using a hoisting member such as a wire and unloaded at a predetermined place, the wire engaged with the heavy load is normally disengaged by a worker.
- However, when the predetermined place is under water such as erection or repair of a breakwater or bank and therefore a work cannot easily approach the place, the wire is left at the place together with a heavy load such as a net case containing stones (for example, refer to Examined Published Japanese Patent Application No. 51-12322).
- However, to arrange a lot of heavy loads such as net cages containing stones at a seashore or pier in the case of the above work, leaving of a wire whose unit cost is approx. 10,000 yen for each heavy load increases the construction cost. Therefore, the wire is dismounted by a diver under water. However, because it is not easy to dismount it depending on the meteorological condition or installed condition of the heavy loads, it has been desired to improve the dismounting operation.
- To solve the above problems, the applicant of this invention applied for a patent (Unexamined Published Japanese Patent Application No. 3-73986) of a dismounting device for a heavy load hoisting member, in which an upper hoisting member is set between a base and a crane hook, a lower hoisting member whose foundation end is set to the base is engaged with a heavy-load hoisting member engagement portion and whose front-end ring is fitted into a mast erected on the base, and a slider slidably fitted into the mast is pushed up by a resilient body so that the top of the slider fits at least the top of the mast under loadless state and moreover slider lowering means lowers the slider by overcoming the resilient force of the resilient body while the base is raised.
- When the slider lowering means is a weight suspended by the slider through a suspension member, the ring at the front end of the lower hoisting member fitted into the mast is completely removed from the mast after a hoisted heavy load is downed at a predetermined place and the weight is mounted on the heavy load, and moreover the base lowers by a predetermined distance. By raising the base by a crane under the above state, the lower hoisting member is removed from the heavy-load hoisting member engagement portion. Therefore, it is possible to set a heavy load at a place where no worker can work in view of safety and sanitation by using a crane.
- When the slider lowering means is provided with a fixed pulley set on the base, a tension member whose one end is set to the slider through the pulley, and a releaser engaged with the hook of a crane and formed so that the other end of the tension member can is freely be engaged or disengaged, the ring at the front end of the lower hoisting member is completely removed from the mast before the base contact the heavy load after downing the heavy load at a predetermined place by releasing the other end of the tension member from the releaser at a desired position before the heavy load is downed.
- In the case of the above conventional dismounting device, however, the suspension member or tension member may be damaged because they are exposed for a relatively long time.
- Moreover, in the case of the dismounting device using the weight, the weight may not stably be mounted on a heavy load when downing the heavy load at a predetermined position if the heavy load is a tetrapod whose top is not flat.
- Furthermore, in the case of the dismounting device using the releaser, operations are troublesome because the tension member released from the releaser must be engaged with the releaser again when hoisting another heavy load in order to down an original heavy load at a predetermined place.
- It is the first object of the present invention to provide a dismounting device for a heavy load hoisting member, making it possible to automatically dismount a lower hoisting member engaged with a heavy load from the heavy load when downing the heavy load at a predetermined place.
- It is the second object of the present invention to provide a dismounting device for a heavy load hoisting member, making it possible to hoist a heavy load with any shape and down it at a predetermined place without damaging a tension member and disuse the engagement of a tension member with the hook of a crane.
- The constitution of the present invention to achieve the above objects is described below by referring to FIGs. 1, 2, and 7 which correspond to an embodiment.
- The present invention is a device for dismounting a lower hoisting
member 32 engaged with aheavy load 11 having a hoistingmember engagement portion 11a from theheavy load 11. - The dismounting device comprises a
base 12, an upper hoistingmember 28 whose foundation end is set to thebase 12 and whose front end is formed so that it can be engaged with ahook 31a of acrane 31, amast 17 erected on thebase 12, a lower hoistingmember 32 whose foundation end is set to thebase 12 and whose front end has aring 32a to be fitted into themast 17, and which engages with a hoisting-member engagement portion 11a, aslider 18 vertically movably set to themast 17, a firstresilient body 21 for pushing up theslider 18 under loadless state so that the top of theslider 18 fits at least the top of themast 17, a slider lowering means 33 for lowering theslider 18 by overcoming the resilient force of the firstresilient body 21, locking means 43 for temporarily locking the slider lowering means 33 while theslider 18 lowers, and unlocking means 55 for unlocking the locking means 43. - When the
heavy load 11 hoisted by thecrane 31 is downed at a predetermined place by using the upper hoistingmember 28,base 12, and lower hoistingmember 32 and thereafter the locking means 43 is unlocked by the unlocking means 55, the slider lowering means 33 stops. As a result, thering 32a at the front end of the lower hoistingmember 32 fitted into themast 17 is removed from themast 17 because theslider 18 is raised up to at least the top of themast 17 by the resilient force of the firstresilient body 21. When thebase 12 is raised by thecrane 31 under the above state, the lower hoistingmember 32 is removed from the hoistingmember engagement portion 11a of theheavy load 11 and disengaged from theheavy load 11. - When the locking means 43 is unlocked by the unlocking means 55 before downing the
heavy load 11 at a predetermined place, the slider lowering means 33 stops but theslider 18 is kept lowered because thering 32a of the lower hoistingmember 32 on which the load of theheavy load 11 works is fitted into themast 17. Resultingly, theslider 18 is raised up to the top of themast 17 by the resilient force of the firstresilient body 21 when theheavy load 11 is downed at the predetermined place and thereby thering 32a of the lower hoistingmember 32 fitted into themast 17 is removed from themast 17. -
- FIG. 1 is a perspective of an important portion, showing the state in which a heavy load is hoisted by a crane through the dismounting device of the first embodiment of the present invention for a heavy load hoisting member;
- FIG. 2 is a sectional view taken along the line A-A in FIG. 1, showing the state in which the slider lowering means of the dismounting device stops and a slider is raised;
- FIG. 3 is a sectional view corresponding to FIG. 2, showing the state in which the slider lowering means operates and the slider is lowered;
- FIG. 4 is a sectional view taken along the line B-B in FIG. 2;
- FIG. 5 is a sectional view taken along the line C-C in FIG. 2;
- FIG. 6 is a sectional view taken along the line D-D in FIG. 2;
- FIG. 7 is an enlarged view of the portion E in FIG. 2;
- FIG. 8 is a block diagram of remote control means for remote-controlling an arm holder;
- FIG. 9 is an enlarged view of the portion E in FIG. 2, showing the state in which an adjustable bar engages with a locked member;
- FIG. 10 is a sectional view corresponding to FIG. 9, showing the state immediately before an arm rotates in the direction for releasing the engagement of the adjustable bar with the locked member and the locked member lowers;
- FIG. 11 is a sectional view corresponding to FIG. 9, showing the state in which the locked member currently lowers;
- FIG. 12 is a sectional view corresponding to FIG. 9, showing the state in which the locked member lowers up to the lowest end;
- FIG. 13 is a front view of an important portion, showing the state in which a base is mounted on a heavy load to be hoisted and a ring at the front end of a lower hoisting member is fitted into a mast;
- FIG. 14 is a front view corresponding to FIG. 13, showing the state in which the heavy load is hoisted by a crane through the dismounting device;
- FIG. 15 is a front view corresponding to FIG. 13, showing the state in which the heavy load is downed at a predetermined place;
- FIG. 16 is a front view corresponding to FIG. 13, showing the state in which a locking device is unlocked by unlocking means and the slider removes a ring at the front end of a lower hoisting member fitted into a mast from the mast;
- FIG. 17 is a front view corresponding to FIG. 13, showing the state in which the dismounting device is hoisted by a crane and the lower hoisting member is removed from the hoisting member engagement portion of a heavy load;
- FIG. 18 is a perspective view corresponding to FIG.7, showing the state in which the adjustable bar of the second embodiment of the present invention engages with the locked member;
- FIG. 19 is a perspective view corresponding to FIG. 18, showing the state immediately before the arm rotates in the direction for releasing the engagement of the adjustable bar with the locked member and the locked member lowers;
- FIG. 20 is a sectional view corresponding to FIG. 7, showing the state in which the lock pin of the third embodiment of the present invention is inserted into the through-hole of the locked member;
- FIG. 21 is a sectional view taken along the line F-F in FIG. 20;
- FIG. 22 is a sectional view corresponding to FIG. 21, showing the state in which the lock pin is removed from the through-hole of the locked member;
- FIG. 23 is a sectional view taken along the line G-G in FIG. 24, showing the state in which the slider lowering means of the fourth embodiment of the present invention operates and the slider lowers;
- FIG. 24 is a sectional view taken along the line H-H in FIG. 23;
- FIG. 25 is a perspective view of an important portion, showing a heavy load is hoisted by a crane through the dismounting device for a heavy load hoisting member;
- FIG. 26 is a sectional view corresponding to FIG. 23, showing the state in which the heavy load is hoisted by a crane through the dismounting device; and
- FIG. 27 is a sectional view corresponding to FIG. 23, showing the state in which the locking device is unlocked by the unlocking means and the slider removes the ring at the front end of the lower hoisting member fitted into the mast from the mast.
-
- The first embodiment of the present invention is described below in detail by referring to the accompanying drawings.
- As shown in FIGs. 1 to 12, this embodiment uses a concrete block as a
heavy load 11 in which a reverse-U-shapedwire engagement portion 11a is secured to the top middle between the both ends of theheavy load 11. The dismounting device for a hoisting member has abase 12 with an approximately-T-shaped large-diameter hole 12a formed at its center (FIGs. 1 to 4). Thebase 12 has a pair ofplates side plates plate 13 to connect theseplates bottom block 16 set at the bottom margin center of theplate 13. Theplates side plates bottom block 16. - The approximately-T-shaped large-
diameter holes plates holes plate 13. A throughhole 12b is vertically formed at the bottom center of thebase 12 toward the large-diameter hole 12a and the bottom of acylindrical mast 17 is inserted into the through-hole 12b and welded to it. Themast 17 is erected on thebase 12 so that it protrudes into the large-diameter hole 12A. Themast 17 has a lower large-diameter portion 17a and an upper small-diameter portion 17b facing the large-diameter hole 12a. A firstresilient body 21 is movably fitted into themast 17 and aflat slider 18 is slidably fitted to the small-diameter portion 17a. A pair ofguide portions plates slider 18 and a pair ofstoppers slider 18 from separating from themast 17 are secured to theplates knock pin 23 respectively. This embodiment uses a helical compression spring as theresilient body 21. Theslider 18 is energized by the firstresilient body 21 so that theguide portion 18a of theslider 18 contacts thestopper 19 when the top of theslider 18 slightly protrudes from the top of the mast 17 (FIG. 2).Flanges diameter holes plates shackle holders flange 24 and theplate 13 respectively. A mountinghole 26a into which ashackle 27 can movably inserted is formed on the shackle holder 26 (FIGs. 1 and 4). -
Bolts top wires holes plates bolt 29. The front end of thetop wire 28 is engaged with ahook 31a of a crane 31 (FIG. 1). The foundation end of abottom wire 32 is fitted to theshackle 27 and theshackle 27 is movably inserted into the mountinghole 26a of the shackle holder 26 (FIGs. 1 and 4). Aring 32a which can be fitted to themast 17 is formed at the front end of the bottom wire 32 (FIGs. 1 and 3). - The
base 12 is provided with slider lowering means 33 for lowering theslider 18 by overcoming the resilient force of the resilient body 21 (FIGs. 1, 2, 3, and 5), locking means 43 for temporarily locking the slider lowering means 33 while theslider 18 lowers, and unlockingmeans 55 for unlocking the locking means 43 (FIGs. 2 to 4 and 7 to 12). - The slider lowering means 33 is provided with a
sensor rod 34 which is vertically movably inserted into the base 12 as shown in FIGs. 2, 3, and 5 in detail and which is made of a reverse-U-shaped steel plate and whose bottom protrudes downward from the bottom of thebase 12, amovable pulley 41 rotatably set to thesensor rod 34, a fixedpulley 42 rotatably set to thebase 12, and atension member 36 whose one end is secured to thebase 12 and other end is secured to theslider 18 and which is set through themovable pulley 41 and the fixedpulley 42. Thesensor rod 34 has a pair ofleg portions legs legs base 12 due to thesensor rod 34's own weight when thebase 12 is hoisted. Themovable pulleys legs flat member 34c is secured to the bottoms of thelegs bolt 34d and anut 34e respectively (FIG. 4). The fixed pulleys 42 and 42 are set to theplates diameter portion 17a of themast 17 protruded from thebottom block 16 respectively. This embodiment uses a wire as thetension member 36 which is set so as to lower theslider 18 by overcoming the resilient force of the firstresilient body 21 when theleg 34a of thesensor rod 34 is inserted into thebase 12. Thebase 12 has a mass for inserting theleg 34a of thesensor rod 34 into the base 12 to lower theslider 18 due to the weight of the base 12 by overcoming the resilient force of the firstresilient body 21 when lowering the base 12 onto theheavy load 11. - The locking means 43, as shown in FIGs. 4, 7, and 9 to 12 in detail, has a locked
member 44 protruded upward from the top of the base 12 integrally erected at the center of the connecting portion 34b of thesensor rod 34 and formed into a flat bar, and a flatadjustable bar 46 which has aslot 46a to be movably inserted into the lockedmember 44, and which extends in the width direction of the blockedmember 44. Abox 47 having alid 48 is secured to the top of the base 12 by a bolt 49 (FIG. 4) and the lockedmember 44 protrudes into thebox 47. Aroller 50 is rotatably set to the top of the lockedmember 44 and the lockedmember 44 is formed so that the width of the top is smaller than that of the bottom. Theslot 46a is formed at the middle of theadjustable bar 46 along the longitudinal direction of thebar 46 and its length is slightly larger than the bottom width of the lockedmember 44. - A mounting
slot 46b is approximately horizontally formed at the foundation end of theadjustable bar 46 along the longitudinal direction of thebar 46 and theadjustable bar 46 is rotatably set to thebox 47 so that it can slide in the longitudinal direction within the vertical plane by passing apin 52 through the top of an approximately-J-shapedbracket 51 and the mountingslot 46b. When theadjustable bar 46 reaches a predetermined angle, the lockedmember 44 is constituted so that it is engaged with theslot 46a. In other words, when theadjustable bar 46 rotates about thepin 52 and moves in its longitudinal direction and the cross-directional both margins of the bottom of the lockedmember 44 are engaged with the both margins of theslot 46a of theadjustable bar 46, theleg 34a of thesensor rod 34 is inserted into thebase 12, that is, theslider 18 lowers and thereby the lockedmember 44 is temporarily fixed. Moreover, an adjustingbolt 53 for adjusting the engagement angle of theadjustable bar 46 is screwed to the front end of theadjustable bar 46 and thebolt 53 is fixed by alock nut 54. - The unlocking means 55, as shown in FIGs. 7 and 9 to 12, comprises a second
resilient body 22 for energizing anarm 57 in the direction for releasing the lockedmember 44 from theadjustable bar 46 and anarm holder 58 for holding thearm 57 by resisting the resilient force of the secondresilient body 22 to secure the lockedmember 44 to theadjustable bar 46 during operation and releasing the lockedmember 44 from theadjustable bar 46 by releasing thearm 57 during no operation. Thearm 57 is erected at the bottom of thebox 47 and rotatably set to abracket 59 secured to thebox 47 through apin 61. Theroller 50 faces the lateral of thearm 57. A catchingportion 57a for catching the front end of the adjustingbolt 53 of theadjustable bar 46 is set at one of the laterals of the bottom of thearm 57 and an attractingplate 62 is rotatably set to the top of thearm 57 through apin 63. This embodiment uses a helical tension spring as the secondresilient body 22 which is set between the top of thebracket 51 and that of thearm 57. Thisspring 22 energizes thearm 57 so that thearm 57 rotates in the direction for pushing up the front end of theadjustable bar 46. Thearm holder 58 is set to the top of a reverse-L-shapedbracket 64 secured to thebox 47 by along bolt 66 and abox nut 67 so that it faces the attractingplate 62 and acompression coil spring 68 is fitted to thelong bolt 66. Thearm holder 58 is constituted so that it can be moved toward thebracket 64 by resisting the resilient force of thecompression coil spring 68. Moreover, an electromagnet (not illustrated) is built in thearm holder 58 so that the magnetic force attracts the attractingplate 62 when the electromagnet is magnetized and the attractingplate 62 is separated from thearm holder 58 due to the resilient force of the secondresilient body 22 when the electromagnet is demagnetized. The lateral of thearm 57 facing theroller 50 is formed on aslope 57b which further approaches the lockedmember 44 at its lower part and theslope 57b rotates thearm 57 in the direction for pressing the attractingplate 62 against thearm holder 58 when theslope 57b contacts theroller 50 to lower theroller 50. - The
arm holder 58, as shown in FIG. 8 in detail, is constituted so that it is wirelessly remote-controlled by remote control means 71. The remote control means 71 comprises atransmitter 72 separate from thebase 12 and areceiver 73 set in thebox 47. Thetransmitter 72 comprises aswitch control panel 72a, aradio transmitting section 72b electrically connected to thecontrol panel 72a, and a transmittingantenna 72c. Thereceiver 73 comprises a receivingantenna 73c, aradio receiving section 73a, and adriving section 73b for controlling thearm holder 58 electrically connected to the receivingsection 73a. By turning on/off a switch (not illustrated) set on theswitch control panel 72a, the arm holder is operated or stopped. That is, theradio transmitting section 72b transmits a control signal of thearm holder 58 through the transmittingantenna 72c by operating the switch on thecontrol panel 72a. Theradio receiving section 73a receives the transmitted control signal through the receivingantenna 73c and thedriving section 73b controls thearm holder 58 in accordance with the received signal. - Operations of the dismounting device thus constituted for a heavy load hoisting member are described below by referring to FIGs. 1 to 3 and 9 to 17.
- First, the
base 12 is hoisted by thecrane 31 through the top wire 28 (FIGs. 1 and 2). In this case, because the lockedmember 44 lowers up to the bottommost position as shown in FIG. 12, theroller 50 of the lockedmember 44 rotates thearm 57 in the direction of the solid-line arrow to press the attractingplate 62 against thearm holder 58, a switch (not illustrated) on theswitch control panel 72a is turned on and the attractingplate 62 is attracted by thearm holder 58 so as to prevent thearm 57 from rotating in the direction of the broken-line arrow. - As shown in FIG. 3, when the
base 12 is downed on theheavy load 11 in order to engage thebottom wire 32 with theheavy load 11 to be hoisted, theleg 34a of thesensor rod 34 protruded downward from the bottom of thebase 12 is inserted into thebase 12 and theslider 18 lowers by resisting the resilient force of the firstresilient body 21. In this case, the lockedmember 44 rises as shown in FIG. 9. Under the above state, thebottom wire 32 is inserted into thewire engagement portion 11a and thereafter thering 32a at the front end of thebottom wire 32 is fitted to themast 17. - When the
heavy load 11 is hoisted by thecrane 31 through thetop wire 28,base 12, andbottom wire 32 as shown in FIG. 14, the lockedmember 44 engages with theslot 46a of theadjustable bar 46 as shown in FIG. 9. Therefore, thesensor rod 34 does not lower. - When the
heavy load 11 is downed at a predetermined place G as shown in FIG. 15, thebottom wire 32 is loosened. When the switch is turned off under the above state, thearm holder 58 does not attract the attractingplate 62. Therefore, thearm 57 rotates in the direction of the solid-line arrow in FIG. 9 due to the resilient force of the secondresilient body 22 and theslope 57b of thearm 57 contacts the roller 50 (FIG. 10). Because thearm 57 pushes up the front end of theadjustable bar 46 at the same time, the lockedmember 44 is released from theadjustable bar 46 and theroller 50 lowers due to its own weight together with the locked member 44 (FIG. 11). In this case, theroller 50 rotates thearm 57 in the direction of the broken-line arrow while rolling on theslope 57b of thearm 57. However, because the narrow portion at the top of the blockedmember 44 is located in theslot 46a of theadjustable bar 46, theslot 46a of theadjustable bar 46 lowers up to the position shown in FIG. 12 without engaging with the lockedmember 44 and the attractingplate 62 is pressed against thearm holder 58. Moreover, because theslider 18 under loadless state is raised due to the resilient force of the firstresilient body 21 simultaneously when the lockedmember 44 lowers, thering 32a of thebottom wire 32 is removed from the mast and dropped as shown in FIG 16. - Furthermore, when the
base 12 is hoisted by winding up a crane wire (not illustrated) as shown in FIG. 17, thebottom wire 32 is removed from thewire engagement portion 11a of theheavy load 11 and raised together with thebase 12. Therefore, it is possible to automatically dismount thebottom wire 32 from theheavy load 11 downed at the predetermined place G. - Furthermore, it is possible to hoist the
heavy load 11 again and down it at another place unless the switch is turned off when theheavy load 11 is downed at the predetermined position G. - Furthermore, when the switch is turned off while the
heavy load 11 is hoisted as shown in FIG. 14, thearm 57 rotates in the direction of the solid-line arrow in FIG. 9 due to the resilient force of the secondresilient body 22 to push up the front end of theadjustable bar 46. Therefore, the lockedmember 44 is released from theadjustable bar 46 and lowers (FIGs. 10 to 12). In this case, theslider 18 is kept lowered and thetension member 36 is loosened because thering 32a of thebottom wire 32 on which the load of theheavy load 11 works is fitted to themast 47. As a result, when theslider 18 is brought under loadless state by downing theheavy load 11 at the predetermined place G, it is raised up to the top of themast 17 due to the resilient force of the firstresilient body 21 and thering 32a of thebottom wire 32 fitted to themast 17 is removed from themast 17. - FIGs. 18 and 19 show the second embodiment of the present invention. In FIGs. 18 and 19, a symbol same as that of first embodiment represents the same part.
- The foundation end of an
adjustable bar 86 of locking means 83 is set to an approximately-U-shaped bracket 81 secured to thebox 47 so that it is rotatable and slidable in the longitudinal direction through apin 82 and the middle of anarm 87 of unlockingmeans 85 is rotatably set to an approximately-U-shaped bracket 88 fixed to abox 47, through apin 89. The front end of thearm 87 faces the bottom of the front end of theadjustable bar 86 and an operatingrope 91 is set to the foundation end of thearm 87. A slot 86a to be movably fitted to a lockedmember 84 is formed at the middle of theadjustable bar 86. - Operations of the thus-constituted dismounting device for a heavy load hoisting member are described below.
- When the operating
rope 91 is pulled in the direction of the solid-line arrow in FIG. 18 while a heavy load is hoisted or downed at a predetermined place, the front end of thearm 87 pushes up the front end of theadjustable bar 86 as shown in FIG. 19. Therefore, the slot 86a of theadjustable bar 86 is disengaged from the lockedmember 84 and the lockedmember 84 lowers. Because operations other than the above mentioned are the same as those of the first embodiment, their description is omitted. - FIGs. 20 to 22 show the third embodiment of the present invention. In FIGs. 20 to 22, a symbol same as that of the first embodiment represents the same part.
- Locking means 103 has a through-
hole 114a formed on a lockedmember 114 protruded into thebox 47 set to the top of a base (not illustrated) and alock pin 106 insertable into the through-hole 114a. The lockedmember 114 is integrated with asensor rod 104 and protruded upward from the top of thesensor rod 104. Thelock pin 106 is slidably held by apin holder 107 secured to thebox 47. The through-hole 114a is formed at a position where it faces thelock pin 106 under the state in which thelegs sensor rod 104 protruded from the bottom of the base are inserted into the base, that is, the lockedmember 114 is almost protruded into thebox 47. Thelock pin 106 has aninsertion portion 106a to be inserted into the through-hole 114a and aflange portion 106b formed at the rear end of theinsertion portion 106a. A thirdresilient body 108 for energizing thelock pin 106 so as to push it toward the lockedmember 114 is built in thepin holder 107. This embodiment uses a compression coil spring as the thirdresilient body 108.Symbol 104b represents a connecting portion for connecting the lockedmember 114 with thelegs - The unlocking means 105 is a means for removing the
lock pin 106 inserted into the through-hole 114a from the through-hole 114a, which has aguide slot 107a formed on the top of thepin holder 107 along the longitudinal direction of theholder 107, anoperating pin 109 secured to thelock pin 106 and protruded upward from theguide slot 107a, and anoperating bar 111 whose middle portion engages with theoperating pin 109. Anengagement slot 111a is formed at the middle of the operatingbar 111 along its longitudinal direction, which is movably fitted to theoperating pin 109. The foundation end of the operatingbar 111 is rotatably set to thebox 47 through apin 112 and anoperating rope 113 is set to the front end of the operatingbar 111. - The following is the description of the thus-constituted dismounting device for a heavy load hoisting member.
- When the operating
rope 113 is pulled in the direction of the solid-line arrow in FIG. 20 while a heavy load is hoisted or downed at a predetermined place, the operatingbar 111 rotates about thepin 112 in the direction of the broken-line arrow and thelock pin 106 is removed from the through-hole 114a (FIG. 22), the lockedmember 114 lowers. Operations other than the above mentioned are the same as those of the first embodiment. Therefore, their description is omitted. - FIGs. 23 to 27 show the fourth embodiment of the present invention. In FIGs. 23 to 27, a symbol same as that of the first embodiment represents the same part.
- In the case of this embodiment, four reverse-U-shaped
wire engagement portions 211a are secured to positions close to the four corners at the top of aheavy load 211 one each (FIG. 25). Abase 212 comprises abase frame 213 made of H-steel and approximately formed like a rectangle, a box-shapedbase body 214 secured to the top center of thebase frame 213, abar mount 215 with a reverse-hat cross section which is secured to the bottom middle of thebase body 214 and on which anadjustable bar 246 of locking means 243 to be mentioned later is set, and apulley mount 216 with an approximately-U-shaped cross section on which the fixedpulley 42 of slider lowering means 233 is set, and secured to the bottom of thebar mount 215. Thebase body 214 is erected between tworeinforcement members base body 214 in thebase frame 213 in parallel with each other. The two reinforcingmembers - A
cylindrical mast 217 is erected at the center of thebase body 214. Themast 217 has a large-diameter portion 217a inserted into and welded with thebase body 214 and a small-diameter portion 217b protruded toward the top of thebase body 214. A firstresilient body 221 is movably fitted to the small-diameter portion 217b and then an approximately-truncated-cone-shapedslider 218 is vertically movably fitted to theportion 217b. Aboss 218a is protruded on the bottom of theslider 218 and along groove 217c is vertically formed from a position close to the top of the small-diameter portion 217b to the center of it. Abolt 219 is screwed to theboss 218a and the front end of thebolt 219 is movably inserted into thelong groove 217c (FIG. 24). Thebolt 219 prevents theslider 218 from rotating against or removing from themast 217. This embodiment uses a compression coil spring as the firstresilient body 221. Avertical hole 217d is formed from the bottom to the top of the large-diameter portion 217a of themast 217. - The
base 212 is provided with slider lowering means 233 for lowering theslider 218 by overcoming the resilient force of the firstresilient body 221, locking means 243 for temporarily locking the slider lowering means 233 while theslider 218 is lowered, and unlockingmeans 255 for unlocking the locking means 243 (FIGs. 23, 24, 26, and 27). The slider lowering means 233 comprises asensor rod 234 whose top is movably inserted into thevertical hole 217d of themast 217 and whose bottom passes thebar mount 215 and pulley mount 216 and protrudes downward from the bottom of thepulley mount 216, amovable pulley 41 rotatably set onto the middle of thesensor rod 234, a fixedpulley 42 rotatably set onto thepulley mount 216, and atension member 236 whose one end is set to thepulley mount 216 and whose other end is set to theslider 218 and which is arranged through themovable pulley 41 and the fixedpulley 42. In this embodiment, thesensor rod 234 uses a flat bar vertically extending and being vertically movably held byslide bearings bar mount 215 and pulley mount 216 and arectangular plate 234a is horizontally welded to the bottom of the rod protruded from the bottom of thepulley mount 216. This embodiment uses twomovable pulleys 41 which are set to the both parallel sides of thesensor rod 234 at the middle of the rod (FIG. 24). This embodiment uses two fixedpulleys 42 which are set to the both sides of thesensor rod 234 on thepulley mount 216. This embodiment uses two wires as thetension members 236 which are arranged so as to lower theslider 218 by resisting the resilient force of the firstresilient body 221 when the top of thesensor rod 234 is inserted into thevertical hole 217d. Thetension member 236 is movably inserted into apipe 237 vertically extended and secured in the base body 214 (FIGs. 23, 26, and 27). - Moreover, a
rod catching member 238 with which the bottom of thesensor rod 234 can contact protrudes downward from thebase 212 and it is vertically movably set to thebase 212. In this embodiment, therod catching member 238 is formed by folding a steel plate and set between two reinforcingmembers pulley mount 216. Four vertically-extendingbosses 238a are secured to four corners of therod catching member 238 one each and movably fitted to fourshafts 213c vertically set to face recessedportions members compression coil spring 239 for pressing theboss 238a downward is movably fitted to theshaft 213c. Thebase 212 has a mass for inserting thesensor rod 234 into thevertical hole 217d through therod catching member 238 by overcoming the resilient force of the firstresilient body 221 to lower theslider 218 when thebase 212 is downed onto theheavy load 211. The top of theshaft 213 is formed at a large diameter by a predetermined length so as to prevent therod catching portion 238 coming closer to the base 212 than a predetermined distance due to the contact of the top ofboss 238a movably inserted in shaft 213C with the step difference potion at the bottom of thelarge diameter portion 213d of shaft 213C. - The locking means 243 has a
slot 246a to be movably fitted to thesensor rod 234 and an adjustableflat bar 246 extending in the width direction of thesensor rod 234 under movably fitted state. Theslot 246a is formed at the middle of theadjustable bar 246 along the longitudinal direction of the bar so that the length is slightly longer than the width of thesensor rod 234. A mountingslot 246b is almost horizontally formed at the foundation end of theadjustable bar 246 along the longitudinal direction of thebar 246. Theadjustable bar 246 is set to thebar mount 215 by passing apin 252 through the top of abracket 251 erected on thebar mount 215 and the mountingslot 246b so that it can be rotated in a vertical plane and slid in the longitudinal direction (FIGs. 23, 26, and 27). Thesensor rod 234 is constituted so that it is engaged with theslot 246b when theadjustable bar 246 reaches a predetermined angle. In other words, when theadjustable bar 246 rotates about thepin 252 and moves in its longitudinal direction and the width-directional both ends of thesensor rod 234 are engaged with the both ends of theslot 246a of theadjustable bar 246, thesensor rod 234 is temporarily fixed while therod 234 is inserted into thevertical hole 217d, that is, theslider 218 is lowered. - The unlocking means 255 has two approximately-L-shaped
arms adjustable bar 246 in the direction for releasing thesensor rod 234 from theadjustable bar 246. Thesearms bar mount 215 so that they rotate in a plane perpendicular to the vertical plane in which theadjustable bar 246 rotates. Thearms vertical portions horizontal portions vertical portions base body 214 and thehorizontal portions ropes vertical portions helical tension spring 258 is set between positions close to the top of thevertical portions spring 258 is inserted into apipe 259 horizontally extended and secured in thebase body 214 so as to make thevertical portions horizontal portions adjustable bar 246 and press them against thebar mount 215. - Four reverse-
U-shaped shackle holders 226 are secured to positions close to the both ends of the two reinforcingmember base 213. The foundation ends of fourtop wires 228 are set to theseholders 226 throughshackles 27 respectively and the front end of thetop wire 228 is engaged withhook 31a of thecrane 31. - To each of the four corners of the bottom of
base frame 213, fourU-shaped shackle holders 229 are secured respectively and near each of the four corners of the top ofbase frame 213, four reverseU-shaped guides 227 are secured respectively. Four foundation ends ofbottom wire 232 are secured to shackleholder 229 throughshackle 27. Aring 232a formed at the front end of thebottom wire 232 is inserted into thewire engagement portion 211a of theheavy load 211 and awire guide 227 and then fitted to the mast 217 (FIGs. 23, 26, and 27). - Operations of the thus-constituted dismounting device for a heavy load hoisting member are described below.
- As shown in FIGs. 23 and 24, when the
base 212 is downed on theheavy load 211 to be hoisted in order to engage thebottom wire 232 with theheavy load 211, therod catching member 238 first contacts the top of theheavy load 211 and the base 212 further lowers and stops when it approaches therod catching member 238 up to a predetermined distance. In this case, thesensor rod 234 whose bottom contacts the top of therod catching member 238 is pushed up relatively to themast 217 and the top of thesensor rod 234 is inserted into thevertical hole 217d of themast 217. In other words, because themovable pulley 41 moves upward relatively to themast 217 together with thesensor rod 234, the other end of thetension member 236 pulls theslider 218 downward. As a result, theslider 218 lowers by resisting the resilient force of the firstresilient body 221. After passing thering 232a at the front end of thebottom wire 232 through thewire engagement portion 211a of theheavy load 211 and thewire guide 227, thering 232a is fitted to the mast 217 (FIG. 25). - When the
heavy load 211 is hoisted by thecrane 31 through thetop wire 228,base 212, andbottom wire 232 as shown in FIGs. 25 and 26, the base 212 rises while therod catching member 238 contacts the top of theheavy load 211. When the base 212 rises, theshaft 213c set to the recessedportion 213b of the reinforcingmember 213a also rises. When theboss 238a of therod catching member 238 reaches the bottom of theshaft 213c, therod catching member 238 separates from theheavy load 211 and rises together with thebase 212. In this case, thesensor rod 234 is kept inserted into thevertical hole 217d of themast 217 because it engages with theslot 246a of theadjustable bar 246. As a result, therod catching member 238 separates from the bottom of thesensor rod 234. - When the
heavy load 211 is downed at a predetermined place, thebottom wire 232 is loosened. In this case, thebase 212 is kept hoisted by thecrane 31 so that therod catching member 238 does not contact theheavy load 211. When pulling either of the operatingropes sensor rod 234 is released from theadjustable bar 246 because thehorizontal portion 257b of thearm 257 pushes up the front-end bottom of theadjustable bar 246. Thesensor rod 234 lowers due to its own weight and the resilient force of the first resilient body and contacts therod catching member 238. At the same time, theslider 218 under loadless state because of downing of theheavy load 211 is raised due to the resilient force of the first resilient body 211 (FIG. 27). Therefore, thering 232a of thebottom wire 232 is removed from themast 217 and drops. Moreover, when hoisting thebase 212 by winding a crane wire (not illustrated), thebottom wire 232 is removed from thewire guide 227 and thewire engagement portion 211a of theheavy load 211 and raised together with thebase 212. - In the above first embodiment, a case is shown in which the dismounting device of the present invention for a hoisting member is applied to civil-engineering and construction works. However, the device of the present invention is not restricted to the above case but it can also be applied to a case in which it is a problem for a worker to approach a place where a heavy load is set in view of safety and sanitation.
- Moreover, in the above first to fourth embodiments, a case is shown in which a wire is used as the
top hoisting members bottom hoisting members tension members - Furthermore, in the above first embodiment, the
base 12 is formed by welding a pair ofsteel plates side plates bottom block 16. However, it is also possible to integrally form a base with cast steel or cast iron. - The above first and fourth embodiments use a concrete block as the heavy load and a reverse-U-shaped hook as the hoisting member engagement portion. However, it is also possible to use a cylindrical body such as a electric light pole or a body having a plurality of protrusions such as a tetrapod as the heavy load. In the case of these heavy loads, the whole periphery of these heavy loads serves as the hoisting member engagement portion and a bottom hoisting member is wound around the periphery.
- Moreover, in the case of the first and fourth embodiments, a movable pulley is set to the sensor rod, a fixed pulley is set to the base, a tension member whose one end is set to the base is arranged through the movable and fixed pulleys, and the other end of the tension member is set to the slider. However, the movable pulley is unnecessary by setting the other end to the slider and arranging the tension member through the fixed pulley.
- Furthermore, in the case of the first and fourth embodiments, the base 12 or 212 is downed on the
heavy load bottom wire heavy load wire mast slider 18 or 118, and under this state, hoisting the base 12 or 212 by a crane again to move the heavy load upward and thereby engaging thebottom wire - In the case of the first and second embodiments, the locked member is formed like a flat bar. However, it is also possible to use a round bar, a round pipe, or a member with other shape as the locked member if it can be hooked to a slot bar of the adjustable.
- In the case of the third embodiment, the through-hole is formed on the locked member of the sensor rod. It is also possible to form the through-hole on the leg or connecting portion of the sensor rod.
- The shape and structure of a mast, slider, and resilient body are not restricted to the shape and structure of the
masts sliders 18 and 118, andresilient bodies - As described above, the present invention is constituted so that a base is hoisted by a hook of a crane through a top hoisting member, a bottom hoisting member whose foundation end is set to the base is engaged with the hoisting member engagement portion of a heavy load, a slider is vertically movably set to a mast erected on the base, a ring at the front end of the bottom hoisting member is fitted to the mast while the slider is lowered by slider lowering means by overcoming the resilient force of a first resilient body, locking means temporarily fixes the slider lowering means while the slider lowers, and unlocking means unlocks the locking means. Therefore, by unlocking the locking means by the unlocking means when a heavy load is downed at a predetermined place, the slider is raised due to the resilient force of the first resilient body and the ring of the bottom hoisting member is removed from the mast. As a result, the bottom hoisting member can automatically be removed from the heavy load by raising the base with the crane. Therefore, it is possible not only to greatly save labor but also easily set a heavy load to a place where no worker can work in view of safety and sanitation by using a crane.
- Moreover, by using a sensor rod whose slider lowering means is vertically movably inserted into a base and whose bottom protrudes downward from the bottom of the base; a movable pulley rotatably set to the sensor rod; a fixed pulley rotatably set to the base; and a tension member whose one end is set to the base, whose other end is set to the slider, and which is arranged through the movable and fixed pulleys so as to lower the slider when the sensor rod is inserted into the base; the dismounting device of the present invention is not damaged because its tension member is hardly exposed and comparatively short compared with a conventional dismounting device using a weight in which its suspension member and tension member are comparatively long and exposed.
- Furthermore, when the heavy load is a body whose top is not flat such as a tetrapod, a conventional dismounting device using a weight cannot stably mount the weight on the heavy load but the present invention makes it possible to down a heavy load with any shape at a predetermined place.
- Furthermore, though the tension member removed from a releaser must be engaged with the releaser again to hoist another heavy load after downing an original heavy load at a predetermined place in the case of a conventional dismounting device using the releaser, the present invention does not require the above operation.
- Particularly, it is possible to easily down a heavy load at a remote place by using remote control means.
- The dismounting device of the present invention for a heavy load hoisting member makes it possible to easily dismount a hoisting member such as a wire, cable, rope, or chain from a heavy load which is a construction material in construction and civil-engineering works and repeatedly use the hoisting member.
Claims (10)
- A dismounting device for a heavy load hoisting member for dismounting a bottom hoisting member (32 or 232) engaged with a heavy load (11 or 211) having a hoisting member engagement portion (11a or 211a), comprising:a base (12 or 212);a top hoisting member (28 or 228) whose foundation end is set to the base (12 or 212) and which is constituted so that its front end can be engaged with a hook (31a) of a crane (31);a mast (17 or 217) erected on the base (12 or 212);a bottom hoisting member (32 or 232) whose foundation end is set to the base (12 or 212), on whose front end a ring (32a or 232a) to be fitted to the mast (17 or 217) is formed, and which engages with a hoisting member engagement portion (11a or 211a);a slider (18 or 218) vertically movably set to the mast (17 or 217);a first resilient body (21 or 221) for pushing up the slider (18 or 218) under loadless state so that the top of the slider fits at least the top of the mast (17 or 217);a slider lowering means (33 or 233) for lowering the slider (18 or 218) by overcoming the resilient force of the first resilient body (21 or 221);a locking means (43, 83, 103, or 243) for temporarily locking the slider lowering means (33 or 233) while the slider (18 or 218) lowers; andunlocking means (55, 85, 105, or 255) for unlocking the locking means (43, 83, 103, or 243).
- The dismounting device for a heavy load hoisting member according to claim 1, wherein the mast (17 or 217) is cylindrically formed, the slider (18 or 218) is slidably fitted to the mast (17 or 217), the first resilient body (21 or 221) uses a compression coil spring to be movably fitted to the mast (17 or 217).
- The dismounting device for a heavy load hoisting member according to claim 1, wherein the slider lowering means (33 or 233) comprises:a sensor rod (34, 104, or 234) which is vertically movably inserted into the base (12 or 212) and whose bottom protrudes downward from the bottom of the base (12 or 212);a fixed pulley (42) rotatably set to the base (12 or 212); anda tension member (36 or 236) whose one end is set to the sensor rod (34, 104, or 234), whose other end is set to the slider (18 or 218), and which is arranged through the fixed pulley (42) so as to lower the slider (18 or 218) when the sensor rod (34, 104, or 234) is inserted into the base (12 or 212).
- The dismounting device for a heavy load hoisting member according to claim 1, wherein the slider lowering means (33 or 233) comprises:a sensor rod (34, 104, or 234) which is vertically movably inserted into a base (12 or 212) and whose bottom protrudes downward from the bottom of the base (12 or 212);a movable pulley (41) rotatably set to the sensor rod (34, 104, or 234);a fixed pulley (42) rotatably set to the base (12 or 212); anda tension member (36 or 236) whose one end is set to the base (12 or 212), whose other end is set to the slider (18 or 218), and which is arranged through the movable pulley (41) and the fixed pulley (42) so as to lower the slider (18 or 218) when the sensor rod (34, 104, or 234) is inserted into the base (12 or 212).
- The dismounting device for a heavy load hoisting member according to claim 1, wherein the locking means (43 or 83) comprises:a locked member (44 or 84) which is vertically movably inserted into a base (12), whose bottom is integrated with a sensor rod (34) protruding downward from the bottom of the base (12), and which protrudes upward from the top of the base (12);an adjustable bar (46 or 86) having a slot (46a or 86a) to be movably fitted to the locked member (44 or 84) and set to the base (12) rotatably in the vertical plane and slidably in the longitudinal direction under the movably- fitted state; andan arm (57 or 87) which is constituted so that the locked member (44 or 84) is engaged with the slot (46a or 86a) when the adjustable bar (46 or 86) reaches a predetermined angle to rotate the adjustable bar (46 or 86) so that the unlocking means (55 or 85) releases the locked member (44 or 84) from the adjustable bar (46 or 86).
- The dismounting device for a heavy load hoisting member according to claim 5, wherein the locking means (55) comprises:a second resilient body (22) for energizing the arm (57) so as to release the locked member (44) from the adjustable bar (46); andan arm holder (58) for holding the arm (57) by overcoming the resilient force of the second resilient body (22) to engage the locked member (44) with the adjustable bar (46) under operation and releasing the arm (57) to release the locked member (44) from the adjustable bar (46) under no operation.
- The dismounting device for a heavy load hoisting member according to claim 6, whereinthe arm holder (58) is constituted so that it is remote-controlled by remote control means (71), andthe remote control means (71) comprises a transmitter (72) which is set separately from a base (12) to transmit a control signal for controlling the arm holder (58) through radio and a receiver (73) which is set to the base (12) to control the arm holder (58) by receiving the control signal from the transmitter (72).
- The dismounting device for a heavy load hoisting member according to claim 1, wherein the locking means (103) comprises:a through-hole (114a) formed on a sensor rod (104) which is vertically movably inserted into the base (12) and whose bottom protrudes downward from the bottom of the base (12);a lock pin (106) set to the base (12) so that it can be inserted into the through-hole (114a);a third resilient body (108) for energizing the lock pin (106) so as to insert the lock pin (106) into the through-hole (114a); andan operating lever (111) for unlocking means (105) to remove the lock pin (106) from the through-hole (114a) by resisting the resilient force of the third resilient body (108).
- The dismounting device for a heavy load hoisting member according to claim 3 or 4, wherein a rod catching member (238) with which the bottom of a sensor rod (234) can contact protrudes downward beyond a base (212) and is vertically movably set to the base (12).
- The dismounting device for a heavy load hoisting member according to claim 1, wherein locking means (243) comprises an adjustable bar (246) having a slot (246a) movably fitted to a sensor rod (234) which is vertically movably inserted into a base (212) and whose bottom protrudes downward from the bottom of the base (212) and being set to the base (212) rotatably in the vertical plane and slidably in the longitudinal direction under the movably-fitted state, andan arm (257) which is constituted so as to engage the sensor rod (234) with the slot (246a) when the adjustable bar (246) reaches a predetermined angle to rotate the adjustable bar (246) so that unlocking means (255) releases the sensor rod (234) from the adjustable bar (246).
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10782293 | 1993-05-10 | ||
JP107822/93 | 1993-05-10 | ||
JP10782293 | 1993-05-10 | ||
PCT/JP1994/000689 WO1994026647A1 (en) | 1993-05-10 | 1994-04-26 | Apparatus for removing large-weight object lifting members |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0650919A1 EP0650919A1 (en) | 1995-05-03 |
EP0650919A4 EP0650919A4 (en) | 1997-04-23 |
EP0650919B1 true EP0650919B1 (en) | 1999-10-20 |
Family
ID=14468924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94913816A Expired - Lifetime EP0650919B1 (en) | 1993-05-10 | 1994-04-26 | Apparatus for removing large-weight object lifting members |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0650919B1 (en) |
JP (1) | JPH0725578A (en) |
CN (1) | CN1048469C (en) |
AU (1) | AU6582094A (en) |
BR (1) | BR9405361A (en) |
CA (1) | CA2139939C (en) |
DE (1) | DE69421239T2 (en) |
RU (1) | RU2110468C1 (en) |
WO (1) | WO1994026647A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100347072C (en) * | 2002-06-20 | 2007-11-07 | 株式会社托太兹 | Removing device for heavy article hoisting sling |
IL209844A (en) | 2010-12-08 | 2017-11-30 | Technion Res & Dev Foundation | Multiple delivery sling-load system and method |
KR101328038B1 (en) * | 2012-09-10 | 2013-11-20 | 한국해양과학기술원 | Rope trigger apparatus |
CN103722034A (en) * | 2013-11-17 | 2014-04-16 | 安徽科泰工贸有限责任公司 | Wirelessly-controlled wire rope pulling machine |
US9783393B2 (en) * | 2015-11-24 | 2017-10-10 | Safety Products Engineering Group, Inc. | Lifting apparatus |
CN113883144B (en) * | 2021-09-27 | 2023-05-05 | 中国海洋石油集团有限公司 | Underwater self-locking device |
CN114506890B (en) * | 2022-02-25 | 2023-01-03 | 中铁二局集团建筑有限公司 | Treatment equipment for water body pollution |
CN114772453B (en) * | 2022-06-16 | 2022-09-13 | 山西路桥智慧交通信息科技有限公司 | Heavy pipeline hoisting mechanism for highway engineering construction |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH341289A (en) * | 1955-05-14 | 1959-09-30 | Bachmann Marcel | Load pendulum for trolleys of cable car cranes |
US3666216A (en) * | 1970-08-19 | 1972-05-30 | Charles E Nagy | Theft-proof self-connecting lock coupling device for helicopters and tow submarines |
JPS5017095A (en) * | 1973-06-20 | 1975-02-22 | ||
JPS55132084U (en) * | 1979-03-14 | 1980-09-18 | ||
JPS5668780U (en) * | 1979-10-31 | 1981-06-08 | ||
JP2534408B2 (en) * | 1990-05-11 | 1996-09-18 | 株式会社トーテツ | Device for removing heavy material lifting material |
-
1994
- 1994-01-31 JP JP934094A patent/JPH0725578A/en active Pending
- 1994-04-26 CA CA 2139939 patent/CA2139939C/en not_active Expired - Fee Related
- 1994-04-26 AU AU65820/94A patent/AU6582094A/en not_active Abandoned
- 1994-04-26 DE DE69421239T patent/DE69421239T2/en not_active Expired - Fee Related
- 1994-04-26 EP EP94913816A patent/EP0650919B1/en not_active Expired - Lifetime
- 1994-04-26 CN CN94190367A patent/CN1048469C/en not_active Expired - Fee Related
- 1994-04-26 RU RU95106038A patent/RU2110468C1/en active
- 1994-04-26 BR BR9405361-8A patent/BR9405361A/en not_active IP Right Cessation
- 1994-04-26 WO PCT/JP1994/000689 patent/WO1994026647A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP0650919A4 (en) | 1997-04-23 |
CA2139939C (en) | 1999-01-05 |
DE69421239D1 (en) | 1999-11-25 |
RU95106038A (en) | 1996-11-10 |
AU6582094A (en) | 1994-12-12 |
BR9405361A (en) | 1999-08-31 |
CA2139939A1 (en) | 1994-11-24 |
EP0650919A1 (en) | 1995-05-03 |
JPH0725578A (en) | 1995-01-27 |
CN1048469C (en) | 2000-01-19 |
RU2110468C1 (en) | 1998-05-10 |
DE69421239T2 (en) | 2000-06-21 |
WO1994026647A1 (en) | 1994-11-24 |
CN1110874A (en) | 1995-10-25 |
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