WO2022079934A1 - Rope suspension assisting device and rope suspension method - Google Patents

Rope suspension assisting device and rope suspension method Download PDF

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Publication number
WO2022079934A1
WO2022079934A1 PCT/JP2021/013421 JP2021013421W WO2022079934A1 WO 2022079934 A1 WO2022079934 A1 WO 2022079934A1 JP 2021013421 W JP2021013421 W JP 2021013421W WO 2022079934 A1 WO2022079934 A1 WO 2022079934A1
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WO
WIPO (PCT)
Prior art keywords
rope
weight
passage
inlet
outlet
Prior art date
Application number
PCT/JP2021/013421
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English (en)
French (fr)
Inventor
Kenji Ogura
Original Assignee
Kentech Systems Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kentech Systems Co., Ltd. filed Critical Kentech Systems Co., Ltd.
Publication of WO2022079934A1 publication Critical patent/WO2022079934A1/en

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    • 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
    • B66D1/28—Other constructional details

Definitions

  • the present disclosure relates to a rope suspension assisting device and a rope suspension method.
  • the rope suspension assisting device and the rope suspension method according to the present disclosure are suitable for suspending a rope on an object such as a beam, a cross wood, or a rope located particularly at a high place out of reach of hands.
  • a rope may be desired to be suspended in an inverted U shape on an object such as a beam traversing a high place out of reach of hands at a construction site or the like.
  • a weight is attached to one end of the rope and is thrown to cross over the object and fall, whereby the rope is suspended on the object and both sides of the rope hang from the object toward the ground.
  • the object or a member in the vicinity thereof may be damaged.
  • the thrown weight or rope may not fall due to being obstructed by the obstacle.
  • the present disclosure relates to a rope suspension assisting device and a rope suspension method capable of reliably suspending a rope on an object located at a high place without damaging the object or a member located in the vicinity thereof.
  • a rope suspension assisting device includes a straddle member to be disposed above an object, a rope being configured to be suspended on the object from a front side to a back side, and an arm member provided on the straddle member and supporting the straddle member.
  • the straddle member includes a passage portion on which the rope and a weight attached to the rope are movable in a direction of straddling over the object, a detachment preventing portion configured to prevent the rope and the weight from detaching from the passage portion, and a rope guide portion provided on the passage portion to guide the rope.
  • the passage portion bends to bulge upward from an inlet on one end side to an outlet on the other end side.
  • the rope guide portion is provided at a downward slope continuing to the outlet of the passage portion.
  • the rope guide portion has a rope insertion gap.
  • the rope guide portion folds the rope in two folded rope portions at the rope guide portion by inserting the rope into the rope insertion gap.
  • the rope guide portion allows passage of the rope inserted through the rope insertion gap and no passage of the weight attached to the rope.
  • a rope suspension method for suspending a rope on an object in an inverted U shape includes: hanging the rope on a straddle member by passing the rope from below the object through a rope insertion gap to obtain two folded rope portions; placing both the inlet-side rope portion of the rope and the outlet-side rope portion of the rope on a passage portion, and hanging the rope from an inlet of the passage portion; attaching a weight to a distal end or an intermediate portion of the outlet-side rope portion below the object; disposing a straddle member above the object to straddle over the object from a front side to a back side by extending the inlet-side rope portion and the outlet-side rope portion upward and lifting the straddle member on which the rope is hung; in a state in which the straddle member straddles over the object from the front side to the back side, moving the weight to a position of a height equal to or lower than a height of a rope guide portion by pulling down the inlet-side rope portion, ascend
  • a rope can be reliably suspended on an object such as a beam or a cross wood located at a high place where out of reach of hands without throwing a weight attached to the rope, and there is no risk of damaging the object or other members in the vicinity thereof.
  • Fig. 1 is a schematic view showing a state in which a rope is suspended on an object by using a rope suspension assisting device (first embodiment).
  • Fig. 2 is an external perspective view of the rope suspension assisting device in Fig. 1 with a portion thereof omitted.
  • Fig. 3 is a plan view of Fig. 2.
  • Fig. 4 is a side view of Fig. 2 with a portion thereof broken.
  • Fig. 5 is a front view of Fig. 2.
  • Fig. 6 is a rear view of Fig. 2.
  • Fig. 7 is a schematic view of a rope suspension method.
  • Fig. 8 is a schematic view of the rope suspension method.
  • Fig. 9 is a schematic view of the rope suspension method.
  • Fig. 10 is a schematic view of the rope suspension method.
  • Fig. 11 is a schematic view of the rope suspension method.
  • Fig. 12 is a schematic view of the rope suspension method.
  • Fig. 13 is a schematic view of the rope suspension method.
  • Fig. 14 is a schematic view of the rope suspension method.
  • Fig. 15 is a schematic view of the rope suspension method.
  • Fig. 16 is a schematic view of the rope suspension method.
  • Fig. 17 is a schematic view of the rope suspension method.
  • Fig. 18 is a schematic view of the rope suspension method.
  • Fig. 19 is a schematic view of the rope suspension method.
  • Fig. 20 is an external perspective view showing a modification of the rope suspension assisting device.
  • Fig. 21 is a plan view of Fig. 20.
  • Fig. 22 is a front view of Fig. 20.
  • Fig. 1 is a schematic view showing a state in which a rope is suspended on an object by using the rope suspension assisting device according to first embodiment.
  • Fig. 2 is an external perspective view of the rope suspension assisting device in Fig. 1.
  • Figs. 3 to 6 are respectively a side view, a plan view, a front view, and a rear view of Fig. 2 with a portion thereof broken.
  • a reference numeral 1 denotes a beam (vertical cross section) that is an example of an object traversing a high place.
  • the rope is hung on the object.
  • a reference numeral 2 denotes a rope 2 suspended in an inverted U-shape from the ground to straddle over the beam 1.
  • the rope 2 includes an inlet-side rope portion 2a on a right side of the beam 1 and an outlet-side rope portion 2b on a left side of the beam 1.
  • a weight 3 made of steel is attached to a lower end of the outlet-side rope portion 2b.
  • a reference numeral 10 denotes the rope suspension assisting device that allows the rope 2 to be suspended in an inverted U-shape on the beam 1 located at a high place without throwing the weight 3 attached to the rope 2.
  • the rope suspension assisting device 10 is made of steel as a whole and includes a straddle member 11 and an arm member 12 as shown in Figs. 2 to 6.
  • the rope suspension assisting device 10 may be entirely made of steel.
  • the straddle member 11 is configured to straddle over the beam 1 on which the rope 2 is to be suspended.
  • the arm member 12 is provided on a base portion side (inlet side) of the straddle member 11 and supports the straddle member 11.
  • a base end portion 12a of the arm member 12 is detachably attached to a distal end of an expandable and contractible rod member 13.
  • the straddle member 11 integrated with the arm member 12 can be moved to a desired position.
  • the arm member 12 may be integrated with the rod member 13. Instead of the rod member 13, the arm member 12 may be detachably attached to a distal end of an expandable and contractible crane arm, and the straddle member 11 may be moved to the desired position by expansion, contraction, turning, or the like of the crane arm.
  • the straddle member 11 includes a passage portion 14, detachment preventing portions 16, 17, and a rope guide portion 18.
  • the passage portion 14 is configured in such a way that the rope 2 and the weight 3 are slidable in a direction (left-right direction in Fig. 1) of straddling over the beam 1 that is the object to suspend the rope 2.
  • the detachment preventing portions 16, 17 rise in L shapes respectively from left and right end portions of a floor plate 15 constituting the passage portion 14, thereby preventing the rope 2 and the weight 3 from being detached from the passage portion 14.
  • the rope guide portion 18 is provided at an intermediate portion of a downward slope continuing to an outlet 14b of the passage portion 14, and is in the middle in the left-right direction (front-rear direction sheet of Fig.
  • the rope guide portion 18 has a rope insertion gap (see a reference numeral 22 in Fig. 2). By inserting the rope 2 into the rope insertion gap, the rope 2 can be folded in two rope portions and hung on the rope guide portion 18. The rope guide portion 18 fixes a position where the rope 2 passes on the passage portion 14.
  • the passage portion 14 is smoothly bent, bulging upward, from an inlet 14a on a right end side of Fig. 1 to the outlet 14b on a left end side, which is a direction in which the rope 2 slides on the floor plate 15. Specifically, the passage portion 14 curves in a mountain shape at an inlet-side end portion on a right side of Fig. 3, and then becomes an inclined surface having a substantially linear downward slope near an outlet-side end portion. The outlet-side end portion bends downward in a substantially arc shape (see Fig. 3).
  • the floor plate 15 includes a protruding portion 19 at the inlet-side end portion of the passage portion 14.
  • the protruding portion 19 protrudes obliquely downward at a central portion in the left-right direction when viewed from the inlet side.
  • the floor plate 15 between the protruding portion 19 and the left and right rope detachment preventing portions 16, 17 is cut off symmetrically in a substantially elliptical arc shape to form cut-off portions 20, 21 that are entry guiding portions.
  • the cut-off portions 20, 21 are configured to prevent the weight 3 from getting caught on an end edge 15a of the floor plate 15 and not riding on the passage portion 14 when the weight 3 ascends from below the inlet 14a, and guide the weight 3 to enter the passage portion 14.
  • the rope guide portion 18 is provided at the intermediate portion of the downward slope continuing to the outlet of the passage portion 14, and is in the middle in the left-right direction of the passage portion 14.
  • a steel ring catch is used as the rope guide portion 18, and other types of members such as a carabiner may also be used.
  • the rope guide portion 18 is fixed to an upper surface of the floor plate 15 of the passage portion 14 by welding or the like.
  • a rope passing hole 22 that is an example of the rope insertion gap is opened inside the rope guide portion 18.
  • the rope passing hole 22 has a diameter larger than a diameter of the rope 2 to allow passage of the rope 2, and smaller than a diameter of the weight 3 to prevent passage of the weight 3.
  • a gate nut 18a of a ring catch is turned to freely open and close a gate 18b.
  • An end portion on a distal end side of the arm portion 12 is bent into a shape along a portion from the inlet to the rope guide portion 18, and is fixed to the upper surface of the floor plate 15 of the passage portion 14 by welding or the like in the middle in the left-right direction (extending direction of the beam 1) of the passage portion 14.
  • An at-hand side of the arm portion 12 extends obliquely downward from the protruding portion 19 at the inlet of the passage portion 14.
  • an end side of the rope 2 is taken out by an operator from a basket 30 housing the wound rope 2, and the weight 3 is attached to a distal end (which may also be an intermediate portion of the outlet-side rope portion 2b) of the end side (here, the outlet-side rope portion 2b side as described later) of the rope 2.
  • the weight 3 has such a shape that its upper portion is thin and difficult to be caught by the end edge on the inlet side of the floor plate 15 of the straddle member 11 (that is, the inlet of the passage portion 14).
  • the gate nut 18a of the rope guide portion 18 is loosened, and an intermediate portion near the other end of the rope 2 when viewed from the weight 3 is passed through the rope passing hole 22 from the gate 18b of the rope guide portion 18. Thereafter, the gate nut 18a is tightened to close the gate 18b, thereby preventing the rope 2 from coming off from the rope passing hole 22.
  • the rope 2 is folded in two rope portions by the rope guide portion 18, and the two rope portions are laid on the floor plate 15 between the rope guide portion 18 and the inlet of the passage portion 14. The two rope portions hang from the inlet to the outside so that the rope 2 is hung on the straddle member 11.
  • the weight 3 is kept on the ground (see Fig. 7).
  • the rope 2 is thinner than the rope passing hole 22 and freely movable therein. The weight 3, however, interferes with the rope guide portion 18 and cannot pass therethrough due to being larger than the rope passing hole 22.
  • the basket 30 side is the inlet-side rope portion 2a
  • the weight 3 side is the outlet-side rope portion 2b.
  • the rope 2 may be hung on the straddle member 11 first before the weight 3 is attached to the distal end or the intermediate portion of the outlet-side rope portion 2b.
  • the base end portion 12a of the arm member 12 of the rope suspension assisting device 10 is detachably attached to the distal end portion of the rod member 13 (see Fig. 8).
  • the rod member 13 is lifted so that the straddle member 11 is brought close to the beam 1.
  • the straddle member 11 stops ascending when coming immediately above the beam 1.
  • the straddle member 11 is horizontally moved above the beam 1 to straddle the beam 1 from the front side (right side in Fig. 1) to a back side (left side in Fig. 1) (see Fig. 9. At this time, the straddle member 11 may be placed on the beam 1).
  • the straddle member 11 is disposed in such a way that the inlet of the passage portion 14 is located on a slightly right front side of a right end of the beam 1 in Fig. 1 and the outlet of the passage portion 14 is located on a slightly left front side of a left end of the beam 1 in Fig. 1.
  • the inlet-side rope portion 2a and the outlet-side rope portion 2b are pulled toward the ground by their own weights. Accordingly, the inlet-side rope portion 2a and the outlet-side rope portion 2b make a U-turn at the rope guide portion 18 while maintaining a state of being placed on the floor plate 15 of the passage portion 14, and both extend downward from the inlet of the passage portion 14.
  • the inlet-side rope portion 2a and the outlet side rope portion 2b are guided by the cut-off portions 20, 21 having an elliptic arc shape at the inlet end portion and approach the left and right detachment preventing portions 16, 17, but are prevented from being detached from the passage portion 14 by the detachment preventing portions 16, 17.
  • the inlet-side rope portion 2a without the weight 3 is pulled down by the operator on the ground with hands, and the outlet-side rope portion 2b folded back by the rope guide portion 18 is pulled up together with the weight 3 attached to the lower end of the outlet-side rope portion 2b (see Figs. 10 and 11).
  • An end portion of the passage portion 14 near the inlet smoothly curves to bulge upward, and a portion near the inlet has an upward slope.
  • the cut-off portions 20, 21 that are entry guiding portions cut off in an elliptic arc shape are formed at an inlet end edge of the passage portion 14.
  • the weight 3 descends on the outlet side of the passage portion 14 on the floor plate 15 (see Fig. 16) along the downward slope of the passage portion 14, passes through the back side (left side in Fig. 1) of the beam 1, and descends toward the ground (see Figs. 17 and 18).
  • the rope 2 and the weight 3 pass from the inlet side to the outlet side through the rope passing hole 22 of the rope guide portion 18 provided on the straddle member 11. Accordingly, the rope 2 and the weight 3 are positioned at the center in the left-right direction near the outlet of the passage portion 14. Since the detachment preventing portions 16, 17 are provided from the inlet to the outlet of the passage portion 14, the rope 2 and the weight 3 do not detach from the passage portion 14 during the movement of the rope 2 and the weight 3.
  • the inverted U-shaped rope is finished being suspended on the beam 1 (see Figs. 19 and 1). Thereafter, when it is desired to ascend or descend the outlet-side rope portion 2b as necessary, the inlet-side rope portion 2a may be pulled down to pull the outlet-side rope portion 2b up, or the outlet-side rope portion 2b may be pulled down to ascend the inlet-side rope portion 2a.
  • the rope suspension assisting device 10 includes the straddle member 11 to be disposed above the beam 1, and the rope 2 is configured to be suspended on the beam 1 from the front side to the back side, and the arm member 12 supporting the straddle member 11.
  • the straddle member 11 includes the passage portion 14, detachment preventing portions 16, 17, and the rope guide portion 18.
  • the passage portion 14 is configured in such a way that the rope 2 and the weight 3 attached to the rope 2 are slidable on the passage portion 14 in a direction of straddling over the beam 1.
  • the detachment preventing portions 16, 17 prevent the rope 2 and the weight 3 from being detached from the passage portion 14.
  • the rope guide portion 18 is provided on the passage portion 14 and has the rope passing hole 24 through which the rope 2 can pass.
  • the passage portion 14 smoothly bends to bulge upward from the inlet 14a at the right end to the outlet 14b at the left end.
  • the rope guide portion 18 is provided at the downward slope continuing to the outlet side of the passage portion 14. The rope guide portion 18 allows passage of the rope 2 inserted through the rope passing hole 24 and no allowed to pass through passage of the weight 3 attached to the rope 2.
  • the rope suspension assisting device 10 is prepared, the rope 2 passes from below the beam 1 that is the object through the rope passing hole 22 of the rope guide portion 18 of the straddle member 11 to obtain two folded rope portions, both the inlet-side rope portion 2a and the outlet-side rope portion 2b are placed on the passage portion 14, and the inlet-side rope portion 2a and the outlet-side rope portion 2b are hung from the inlet of the passage portion 14, whereby the rope 2 is hung on the straddle member 11.
  • the weight 3 is attached to the distal end or the intermediate portion of the outlet-side rope portion 2a.
  • the straddle member 11 on which the rope 2 is hung is lifted upward, the inlet-side rope portion 2a and the outlet-side rope portion 2b are extended upward, and the straddle member 11 is disposed above the beam 1 that is the object to straddle over the beam 1 from the front side to the back side.
  • the inlet-side rope portion 2a is pulled down and the outlet-side rope portion 2b is ascended together with the weight 3.
  • the weight 3 enters the passage portion 14 of the straddle member 11 from the inlet, passes the apex of the passage portion 14, and is moved to the position of a height equal to or lower than the height of the rope guide portion 18.
  • the inlet-side rope portion 2a When the weight 3 comes to the position of a height equal to or lower than the height of the rope guide portion 18, the inlet-side rope portion 2a is released, the weight is dropped from the outlet of the passage portion 14 to the back side of the beam 1, and the outlet-side rope portion 2b is hung on the back side of the beam 1. Accordingly, the rope 2 is suspended on the beam 1 in an inverted U-shape. As a result, the rope 2 can be reliably suspended on the beam 1 traversing a high place out of reach of hands without throwing the weight 3 attached to the rope 2. As a result, there is no risk of damaging the beam 1 or other members in the vicinity of the beam 1.
  • the rope suspension assisting device and the weight are made of steel, and may also be made of other materials such as stainless steel and aluminum.
  • the entry guiding portions are constituted by the cut-off portions 20, 21 obtained by cutting the inlet end portion of the floor plate in an elliptic arc shape so that the entry of the weight ascending from below into the inlet of the passage portion is guided.
  • concave portions 25, 26 having a shape of a portion of a cone may be formed at an inlet-side end portion of a floor plate 15A and serve as entry guiding portions to guide the entry of the weight ascending below into an inlet of a passage portion 14A.
  • a rope in addition to various fiber ropes such as natural fiber, synthetic fiber, and composite fiber, a wire rope or a string wire made of metal or plastic can also be used.
  • a rope guide portion that fixes the moving position of the rope on the passage portion may have a ring shape, an arc shape, or a polygonal frame shape in addition to the elongated circular shape as shown in Fig. 2, and a rope passing hole may have a circular shape, a fan shape, or a polygonal shape.
  • the rope guide portion may have a Y shape, a U shape, a V shape, or the like, and a rope insertion gap may be open to the outside. In short, it is sufficient that the rope can be inserted into the rope insertion gap to be hung in a form of two folded rope portions, and that the rope insertion gap allows the rope to pass through and prevents the weight from passing through.
  • the rope suspension assisting device and the rope suspension method are applicable to suspending a rope on an object such as a beam, a cross wood, or a rope located at a high place out of reach of hands.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
PCT/JP2021/013421 2020-10-17 2021-03-29 Rope suspension assisting device and rope suspension method WO2022079934A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-175053 2020-10-17
JP2020175053A JP6867727B1 (ja) 2020-10-17 2020-10-17 ロープ懸け補助装置、ロープ懸け方法

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WO2022079934A1 true WO2022079934A1 (en) 2022-04-21

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856340A (en) * 1973-11-21 1974-12-24 R Faulkner Rope drops
JPS58181469U (ja) * 1982-05-25 1983-12-03 トヨタ自動車株式会社 高所用ワイヤ−掛け器具
US20170136279A1 (en) * 2015-11-18 2017-05-18 TradLabs, Inc. Climbing wall configuration systems and methods
JP2018161086A (ja) * 2017-03-24 2018-10-18 ギャスライト ジョン 高所紐掛け装置および高所紐掛け方法
CN110254539A (zh) * 2019-06-25 2019-09-20 北京史河科技有限公司 安全绳装置
JP2020175053A (ja) 2019-04-15 2020-10-29 青島欧科玩具有限公司 運動玩具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856340A (en) * 1973-11-21 1974-12-24 R Faulkner Rope drops
JPS58181469U (ja) * 1982-05-25 1983-12-03 トヨタ自動車株式会社 高所用ワイヤ−掛け器具
US20170136279A1 (en) * 2015-11-18 2017-05-18 TradLabs, Inc. Climbing wall configuration systems and methods
JP2018161086A (ja) * 2017-03-24 2018-10-18 ギャスライト ジョン 高所紐掛け装置および高所紐掛け方法
JP2020175053A (ja) 2019-04-15 2020-10-29 青島欧科玩具有限公司 運動玩具
CN110254539A (zh) * 2019-06-25 2019-09-20 北京史河科技有限公司 安全绳装置

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JP2022066114A (ja) 2022-04-28

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