JP2017217272A - Main rope hook fixing/releasing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a main rope hook fixing/releasing device which can effectively use an independent main rope hook that is widely known.SOLUTION: The present invention includes: an extendable rod 30 which can vertically move a hook 40 at a desired height: a cylindrical body 10 provided at a tip of the extendable rod; and an outer cylinder 20 rotatably provided on an outer circumference of the cylinder body. Notch grooves are respectively formed on the cylinder body and the outer cylinder 20 along an axial direction thereof. In an opening mode in which the notch grooves match to each other, a main rope can be inserted or released. In a closing mode in which the outer cylinder is rotated to the cylindrical body to close the notch groove of the cylindrical body, the main rope cannot be released from the cylindrical body. When a lever of the hook is inserted in or released from the cylindrical body, a safety lever and an open/close lever rotate, for example to open and close a hooking piece of the hook, to thereby fix or release the main rope hook to a safety rail 70 at a high place, for example. As the hook can be easily and safely fixed to and released from the safety rail by using a fixing/releasing device S, the main rope hook described above can be effectively used as it is.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a master rope hook attachment / detachment device for hooking an independent separate master rope hook on an elevation guide rail or the like of an elevated structure such as a steel tower.

  Patent Document 1 states that “a hook is fixed to the tip of an expansion rod, and the tip of a master rope is tied to the hook. The telescopic rod conveyed in a short state is stretched, and the parent hook is hooked on an arm by the operation on the ground. When the work is finished, rotate the telescopic heel to release the cap that closes the hook's hook, remove it from the arm, and shrink the telescopic heel in order from the bottom. The parental attachment is disclosed (see “Means and Actions to Solve Problems” in the specification).

  Patent Document 2 states that “the weight of the object attached to the tip of the telescopic rod 4 for hanging on the hanging object W is light, and the connection state between the harness-type safety belt 2 and the hanging object W is always maintained. A fall prevention system A using a wind-up type fall preventer 1 configured as described above and a harness-type safety belt 2 used therein are disclosed (see “Problem” column in the summary).

  That is, Patent Document 2 states that “the wind-up type fall preventer 1 is connected to the shoulder belt portion 21 of the harness-type safety belt 2, and the end of the strap 11 of the wind-up type fall preventer 1 is connected to the end of the hook 3 for hooking. The end 32 of the hook 3 for hooking is connected and fixed to the tip 41 of the telescopic hook 4. The hook 31 of the hook 3 is extended by extending the telescopic hook 4 from the ground. When the strap 11 is lifted while being wound up, or when the strap 11 is pulled out while being pulled down, the connected state of the harness-type safety belt 2 and the hooked object W is always maintained by being hooked on the hooked object W. As the weight of the object attached to the tip of the telescopic rod 4 is reduced, the workability is improved "(refer to the" Solution "column in the summary).

Japanese Utility Model Publication No. 63-92652 JP2015-146852A

  By the way, Patent Document 1 discloses that "... the cap that is closing the hook opening by rotating the telescopic hook is released and removed from the arm" (in the specification, "means for solving the problem" And see the latter part of the column of “Operation”). That is, in Patent Document 1, the means for opening and closing the hook opening of the hook is a master rope fitting that integrally configures the hook main body (operation member) and the expansion rod, and is intended for an operator who moves up and down the utility pole ( (See “Industrial Applications” and FIGS. 1 and 4). Therefore, this master rope fitting is not intended for use as a separate separate master rope hook (synonymous with “safety hook”), which is generally popular at construction sites and the like.

  Patent Document 2 discloses a technique based on the premise of “prevention of falling prevention for utility poles” (see “Background Technology” column and paragraph numbers “0030” and “0031”). The basic structures of the hook 3 for hooking and the telescopic hook 4 are the same as the “master rope fitting” disclosed in Patent Document 1. The hook 3 for hooking is shown in FIG. It has a threaded portion (threaded portion) as shown, and by opening and closing the telescopic rod 4 itself, the opening / closing cap 34 can be opened and the latching on the object W can be released. ” (See paragraph number “0029”).

  Further, Patent Document 2 describes, in addition to the “master rope fitting” of Patent Document 1, “the hook-shaped tool provided at the distal end of the telescopic hook and the latch corresponding to this hook-shaped tool” in Example 2. A crash prevention system using a “hook” is disclosed (see “Example 2” and FIGS. 13 to 15). That is, in Patent Documents 1 and 2, it is necessary to purchase and transport a special tool for preventing a fall (for example, a main rope attachment or a hook for hooking) used by an operator who raises or lowers a utility pole. It is not premised on the use of the above-mentioned independent separate parent rope hook which is widely used.

  Therefore, an object of the present invention is to provide a master rope hook attachment / detachment device that can effectively use an independent separate master rope hook that is widely used.

  The present invention relates to a gripping means capable of lifting or suspending a master rope hook to a desired height (synonymous with “elevation”), and a cylinder main body which is disposed at the tip of the grip means and into which the master rope hook enters and can be held. And an outer cylinder that is rotatably arranged outside the cylinder main body, and the cylindrical main body and the outer cylinder have linear notch grooves along the axial direction of the cylinder main body hook. Each of the cylinder main bodies is a parent rope hook attaching / detaching device formed so as to be hooked so that the lever is opened when the lever of the parent rope hook enters the cylinder main body.

  The present invention is the above-described master rope hook attachment / detachment device, wherein the cylinder body of the cylinder main body has an entry end of each of the safety lever and the opening / closing lever when the safety lever and the opening / closing lever of the parent rope hook enter the cylinder at the same time. The axial length of the cylinder is wider than the space between the sections, and is the length ("depth") that the safety lever and the opening / closing lever rotate and open after completion of the entry of the master rope hook into the cylinder. And the width of the end of the cylinder that allows the safety lever or the open / close lever to rotate in the opening direction by contacting the entry end of each lever when the master rope hook enters. It may be made to become.

  In the present invention, in the open mode in which the cutout grooves correspond to each other, the master rope (synonymous with “rope”) of the master rope hook can be inserted into and removed from the cylinder main body and the outer cylinder. In the closed mode in which the outer cylinder is rotated with respect to the cylinder body and the notch groove of the cylinder body is closed, the master rope of the master rope hook does not come off from the cylinder main body. Also, when the lever of the master rope hook is inserted into and removed from the inside of the cylinder main body, for example, the safety lever and the opening / closing lever rotate to open (including the concept of “exposure”) or close the mouth of the master rope hook. Therefore, the master rope hook can be attached to and detached from the safety rail at a high place, for example. That is, according to the present invention, since the master rope hook can be easily and safely attached to or removed from the safety rail, the independent separate master rope hook which has been widely used can be effectively used as it is.

It is the whole schematic regarding the master rope hook attachment / detachment apparatus of a present Example. It is a front view of the principal part release mode of the master rope hook attachment / detachment apparatus shown in FIG. It is a bottom view of the cylinder main body shown in FIG. It is a front view of the principal part closing mode of the master rope hook attachment / detachment apparatus shown in FIG. It is a front view which shows the master rope hook shown in FIG. FIG. 6 is a conceptual diagram of use of the attachment / detachment device with respect to the master rope hook shown in FIG. 5. FIG. 7 is a conceptual diagram of use of the attachment / detachment device with respect to the master rope hook shown in FIG. 6.

  Hereinafter, a specific embodiment of a mode for carrying out the present invention will be described.

  Hereinafter, a master rope hook attaching / detaching apparatus S according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. This master rope hook attaching / detaching device S is an apparatus for opening and closing the mouth of the master rope hook (synonymous with “safety hook”) 40 shown in FIG. This master rope hook 40 (hereinafter also referred to as “hook”) is an independent separate security device that is generally spread at construction sites and the like, and a master rope hook attachment device (hereinafter also simply referred to as “detachment device”). S is a device that attaches and detaches the safety rail 70 of a high-rise building by effectively using the hook 40 as it is. First, the hook 40 will be briefly described.

(Configuration related to parent rope hook 40)
As shown in FIG. 5, the master rope hook 40 includes a hook body 43 that is shaped like a bowl, a substantially L-shaped opening / closing lever 44, and a substantially I-shaped safety lever 45. The hook 40 has a substantially oval shape in plan view, and when the opening / closing lever 44 rotates into the hook body 43, the tip of the hook body 43 and the tip of the opening / closing lever 44 are separated from each other. The shed is opened (see FIG. 7).

  The hook body 43 is formed with a hole 41 for binding a master rope (hereinafter also simply referred to as “master rope”) 60 to the base end thereof. An opening / closing lever 44 is rotatably disposed at the base end of the hook body 43. That is, the open / close lever 44 rotates around a rotation center pin (hereinafter also simply referred to as “pin”) 42 disposed at the base end of the hook body 43 to open and close the hook of the hook body 43 (see FIG. 7). ).

  As shown in FIG. 5, the safety lever 45 is rotatably disposed along the base portion of the hook main body 43. That is, the safety lever 45 is connected to the hook body 43 via a rotation center pin (hereinafter also simply referred to as “pin”) 48 at the base end thereof. Further, a substantially inverted L-shaped guide groove 46 is formed at the other end of the safety lever 45, and a guide pin 47 disposed on the opening / closing lever 44 is inserted into the guide groove 46. In order to disengage this guide pin 47 from a locking portion (not shown) formed at the upper edge of the guide groove 46, it is first necessary to rotate the safety lever 45 in the direction of arrow A shown in FIG. is there.

  Then, when the opening / closing lever 44 is rotated in the direction of arrow B shown in FIG. 7 with the pin 42 as a fulcrum in a state where the guide pin 47 is detached from the engaging portion of the guide groove 46, the hook of the hook body 43 is opened. As shown in FIG. 5, the opening / closing lever 44 and the safety lever 45 have springs 49 and 50 for urging the hook body 43 in the closing direction (directions opposite to the arrow A direction and the arrow B direction, respectively). Is being armed.

  The master rope 60 (see FIG. 5) attached to the hole 41 of the hook body 43 is provided with a hole 62 and an expansion / contraction adjuster 64 for adjusting the length of the rope, as shown in FIG. Has been. The well-known expansion / contraction adjuster 64 and the hole 62 are respectively connected to a safety belt (not shown) that is wound around the waist of an operator (synonymous with “user”).

(Configuration related to parent rope hook attaching / detaching device S)
As shown in FIG. 1, the attachment / detachment device S includes a telescopic rod 30 that can lift or suspend the hook 40 to a desired height (synonymous with “lifting”), and the telescopic rod 30 (“gripping means”). A cylindrical main body 10 that is arranged and fixed at the tip 30A of the same meaning) and that can receive and hold the hook 40, and an outer cylindrical body 20 that is rotatably arranged on the outer periphery of the cylindrical main body 10. As shown in FIG. 2, the tube main body 10 is disposed below the disk-shaped substrate 12, a cylindrical tube 14 disposed on the substrate 12 (synonymous with “fixed”), and the substrate 12. And a connecting portion 16. The cylindrical outer cylinder 20 is rotatably inserted in the cylinder 14. The cylinder 14 is provided with a retaining piece 18 of the outer cylinder 20.

  As shown in FIG. 2, the cylindrical body 14 is formed with a cutout groove (hereinafter simply referred to as “groove”) 14 </ b> A along the axial direction (synonymous with “vertical direction”). As shown by a two-dot chain line in FIG. 5, the groove 14 </ b> A is set in advance so that the cut width is slightly wider than the master rope 60 of the hook 40 described above. As shown in FIG. 2, the outer cylinder 20 is also formed with a notch groove (hereinafter also simply referred to as “groove”) 20 </ b> A along the axial direction.

  The groove 20A of the outer cylinder 20 is slightly wider than the groove 14A of the cylinder 14. In the master rope hook attaching / detaching apparatus S, as shown by the imaginary line in FIG. 5, the master rope (synonymous with “rope”) 60 of the hook 40 passes through the grooves 20A and 14A. That is, the state to which these grooves 20A and 14A correspond is the release mode of the master rope hook attaching / detaching device S.

  Further, as shown in FIG. 3, the substrate 12 has a groove 12 </ b> A along the diametrical direction cut out to a position deeper than the axis (on the side of the connecting portion 16 described later). Therefore, when the master rope 60 is inserted into the attachment / detachment device S as described above, the master rope 50 is set in advance so as not to interfere with the substrate 12 as much as possible, as indicated by an imaginary line in FIG. Yes.

  Then, when the outer cylinder 20 shown in FIG. 2 is rotated in the circumferential direction, the attachment / detachment device S causes the outer cylinder 20 to close the groove 14A of the cylinder 14 as shown in FIG. 4, and the hook 40 shown in FIG. It becomes a closed mode in which the master rope 60 is escaped. Further, when the outer cylinder 20 is rotated so that the groove 20A and the groove 14A of the cylinder 14 correspond to each other, the attachment / detachment device S enters an open mode in which the master rope 60 shown in FIG. 5 can be inserted and removed (see FIG. 2).

  Moreover, as shown in FIG.2 and FIG.4, the edge part 14B of the cylinder 14 is bent in the taper shape toward outward. This end portion (hereinafter also referred to as “taper end portion”) 14 </ b> B is made easy to enter in correspondence with the levers 44 and 45 of the hook 40. The tapered end portion 14B is shown only in FIGS. 2 and 4, and is not shown in other drawings (for example, FIG. 1).

  As shown in FIG. 5, the cylinder body 14 of the cylinder main body 10 has an entry end of each of the safety lever 45 and the opening / closing lever 44 when the safety lever 45 and the opening / closing lever 44 of the parent rope hook 40 enter the cylinder body 14 at the same time. That is, it is set to be slightly wider than a portion between the front end portion of the safety lever 45 (hereinafter also referred to as “entry end portion”) 45A and the base portion 44A of the opening / closing lever 44 (hereinafter also referred to as “entrance end portion”). ing.

  Further, the width of the end portion 14B (synonymous with “diameter”) of the cylindrical body 14 is in contact with the entry end portions 44A and 45A of the levers 44 and 45 when the master rope hook 40 enters, so that the safety lever 45 or the opening / closing lever 44 is It has a width L1 (see FIG. 5) that enables rotation in the opening direction (the direction of arrow A or B shown in FIG. 7). The width L1 is shorter (for example, approximately half) than the width of the hook body 43 when the tips of the hook body 43 and the opening / closing lever 44 abut.

  When the safety lever 45 and the opening / closing lever 44 enter the cylindrical body 14 to contact the distal end portion 45A of the safety lever 45 and to contact the base portion 44A of the opening / closing lever 44, the safety lever 45 has an arrow centered on the pin 48. The guide pin 47 of the opening / closing lever 44 is released from the locking portion (not shown) of the guide groove 46 by rotating in the A direction (see FIG. 6). When the safety lever 45 and the opening / closing lever 44 further enter the cylindrical body 14 in this detached state, the opening / closing lever 44 rotates around the pin 42 in the direction of arrow B (see FIG. 7) and the hook of the hook 40 is opened. Is done.

  As shown in FIG. 1, the axial length L2 of the cylinder body 14 is determined by the length that the safety lever 45 and the opening / closing lever 44 rotate and open after the hook 40 has entered the cylinder body 14 (“ It is synonymous with “depth”. That is, as shown in FIGS. 1 and 7, the depth L2 of the cylinder body 10 is such that the hook of the hook body 43 protrudes from the cylinder body 14 (synonymous with “exposure”) after the hook 40 has been entered. It is preset so that the opening of the door is opened.

  Therefore, by using the attachment / detachment device S, for example, the safety rail 70 or the like can be inserted into / removed from (in the hook or released from) the opening of the hook 40 to be opened. The cylinder body 10 is set in advance so that the tip of the opening / closing lever 44 protrudes from the cylinder body 14 when the hook 40 has entered the cylinder body 14 (see FIGS. 1 and 7).

  Further, as shown in FIG. 3, the connecting portion 16 is disposed at a position facing the radial end edge of the substrate 12, that is, the groove 12A. As for the connection part 16, the front-end | tip 30A of the expansion-contraction rod 30 as shown in FIG. 1 is inserted, ie, connected and fixed (refer FIG. 2). The connecting portion 16 and the tip 30A are fixed by fastening means such as bolts and nuts (not shown) (for example, one-touch type may be used if both are firmly fixed).

  That is, the gripping means of the present invention is a commercially available telescopic rod. For example, the telescopic rod 30 as shown in FIG. 1 has a gripping portion 32 disposed at the base end thereof, an outer pipe 34 for fixing the gripping portion 32, and sliding in and out of the outer pipe 34 (“ The inner pipe 36 (refer to the two-dot chain line in FIG. 3).

  The inner pipe 36 is positioned with respect to the outer pipe 34 by a positioning stopper 38 as shown in FIG. That is, the telescopic rod 30 is positioned at a predetermined length position by inserting a pin (not shown) interlocked with the stopper 38 into a hole (not shown) formed in the inner pipe 36. The distal end 30A of the telescopic rod 30 is the distal end of the inner pipe 36. Various types of commercially available expansion rods are applied, and these expansion rods attach (fix) the cylinder body 10.

(Operation of this embodiment)
First, a hooking operation for hooking the hook 40 to a safety rail 70 (see a two-dot chain line in FIGS. 5 and 7) such as a high-rise building will be described. In this latching operation, the master rope 60 is inserted into the grooves 14A and 20A (see FIG. 2) in a state where the attachment / detachment device S indicated by the two-dot chain line in FIG. 5 is in the open mode (see FIG. 2). And the outer cylinder 20 is rotated in this insertion state, and it is set as closed mode (refer FIG. 4). Next, for example, the master rope 60 is pulled, and the hook 40 is pulled into the cylinder body 10 of the attachment / detachment device S (synonymous with “push”).

  By this retracting operation, the open / close lever 44 of the hook 40 and the entry ends 44A and 45A of the safety lever 45 are hooked to the tapered end 14B of the cylinder 14 in the cylinder body 10. As shown in FIG. 6, the safety lever 45 rotates against the urging force of the spring 50 shown in FIG. 5 in the opening direction (that is, in the direction of arrow A in FIG. 6) with the pin 48 as a fulcrum, and the guide pin 47 Detach from the locking portion (not shown) of the guide groove 46.

  When the hook 40 is further pulled into the cylinder body 10, the opening / closing lever 44 rotates in the opening direction (that is, the arrow B direction in FIG. 7) with the pin 42 as a fulcrum against the urging force of the spring 49 shown in FIG. . That is, at this time, since the guide pin 47 moves along the guide groove 46, the hook of the hook 40 is opened.

  As shown in FIGS. 1 and 7, the attachment / detachment device S is attached to a safety rail such as a high-rise building (FIG. 5) in a state where the opening of the hook 40 is opened (including the concept of “exposure”). And the two-dot chain line in FIG. 7). Therefore, the operator can hook the hook 40 against the safety rail 70 (synonymous with “detaching”).

  In a state where the hook 40 is hooked on the safety rail 70, the attachment / detachment device S connected and fixed to the telescopic rod 30 shown in FIG. 1 is pulled down from the hook 40. When the attaching / detaching device S is detached from the hook 40 by this lowering (synonymous with “hanging”) operation, the opening / closing lever 44 and the safety lever 45 of the hook 40 are moved by the biasing force of the springs 49 and 50 (see FIG. 5). The mouth is closed.

  Then, after the attachment / detachment device S is drawn to the hand along the master rope 60 of the hook 40 hooked on the safety rail 70, the attachment / detachment device S is set to the open mode shown in FIG. Pull away from the leash hook attaching / detaching device S. That is, according to this embodiment, the operator can easily and safely attach the hook 40 to the safety rail 70 as shown in FIG. It can be used effectively.

(Removal work of hook 40 to be hooked)
The removal work for removing the hook 40 that is hooked on the safety rail 70 is performed by attaching the master rope 60 (see FIG. 5) hanging from the safety rail 70 to the attachment / detachment device S in the open mode shown in FIG. The closed mode shown in FIG. Then, the operator lifts the telescopic rod (see FIG. 1) along the master rope 60 to the safety rail 70 side, and hooks the master rope 60 into the cylinder body 10 while pulling the master rope 60. 45 and 44 are entered. That is, the levers 45 and 44 rotate in the opening direction, and the hook 40 is opened.

  Then, the hook 40 is removed from the safety rail 70 in this open state (including the concept of “exposure”). Therefore, according to the present embodiment, the hook 40 can be easily and safely attached to and detached from the safety rail 70 (see FIG. 1) by using the attaching / detaching device S. The rope hook can be used effectively as it is.

  In addition, although the above-mentioned master rope hook 40 is a widely used security device, there are various commercially available master rope hooks that meet safety standards. If the opening / closing lever of the master rope hook can be opened (including the concept of “exposure”) by the attachment / detachment device as described above, the master rope hook attachment / detachment device of the present invention is applied as appropriate. I can do it.

  The gripping means of the present invention is not limited to the telescopic rod 30 and may be a long rod-shaped simple gripping rod that does not expand and contract. In the present embodiment, the cylinder body 10 (cylinder body 14) and the outer cylinder body 20 are formed in a cylindrical shape. However, in the present invention, if the lever (for example, a safety lever) of the parent rope hook can be rotated in the opening direction, the cylinder body. (Cylinder) and the outer cylinder may be polygonal rectangular cylinders.

  The cylinder main body 10 and the outer cylinder 20 of the present embodiment are formed of iron (including “coating” for preventing rust), but the cylinder main body and the outer cylinder are rotated when the lever (such as an opening lever) is rotated. If it is not deformed by a load, it may be molded with a light metal such as aluminum in consideration of a desired thickness. For example, when the cylinder body is formed of aluminum or the like, weight reduction and painting are not necessary.

  DESCRIPTION OF SYMBOLS 10 ... Cylinder main body, 14 ... Cylinder, 14A ... Notch groove (groove) of a cylinder, 14B ... End part (taper end part) of a cylinder, 20 ... Outer cylinder, 20A ... Notch groove (groove) of an outer cylinder ), 30 ... telescopic rod (gripping means), 40 ... parent rope hook, 42 ... rotation center pin (pin), 43 ... hook body, 44 ... opening / closing lever, 44A ... end of the opening / closing lever (entrance end), 45 ... Safety lever, 45A ... Safety lever tip (entrance end), 46 ... Guide groove, 47 ... Guide pin, 48 ... Rotation center pin (pin), 60 ... Master rope (rope), 64 ... Telescopic adjuster, 70 ... safety rail, S ... master rope hook attaching / detaching device, L1 ... end portion width (diameter) of the cylinder 14, L2 ... axial length (depth) of the cylinder 14

Claims (2)

Holding means capable of lifting or hanging the master rope hook to a desired height;
A cylinder body which is disposed at the tip of the gripping means and into which the master rope hook can enter and be held;
An outer cylinder disposed rotatably on the outside of the cylinder body,
The cylindrical main body and the outer cylindrical body are each formed with a linear notch groove extending in the axial direction so as to be wider than the master rope of the master rope hook, and the cylinder main body has the lever of the master rope hook as the cylinder. A master rope hook attaching / detaching device configured to be hooked so that the lever is released when entering the body.   2. The master rope hook attaching / detaching device according to claim 1, wherein the cylinder of the cylinder main body enters the safety lever and the open / close lever respectively when the safety lever and the open / close lever of the master rope hook enter the cylinder simultaneously. The axial length of the cylinder is wider than between the ends, and the safety lever and the opening / closing lever are rotated and opened after completion of the entry of the master rope hook into the cylinder, A master rope hook attaching / detaching device in which the end width of the cylindrical body abuts on the entrance end of each lever when the master rope hook enters and makes the safety lever or the opening / closing lever rotatable in the opening direction. .

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