Hooking device

Abstract

To provide a hooking device capable of hanging a hook at the end of a lanyard in a fall arresting device without drilling a hole unnecessary for an elevator after completion.SOLUTION: A hooking device 100, which is used for hanging a hook Hk at the end of a lanyard in a fall arresting device put on the body when working at a landing in elevator installation work, comprises a longitudinal member 200 that is inserted into a wire entry hole 12 opened in a hoistway wall 14 to pull wiring from equipment installed on the landing side into the hoistway, a stopper member 300 that is attached to the hoistway side end of the longitudinal member 200 and abuts against a hoistway inner wall 14a to prevent the longitudinal member 200 from coming off toward the landing side, and a hook hooking member 400 that is attached to the exposed part of the longitudinal member 200 on the landing side and on which the hook Hk is hung. The hook hooking device is fixed to the hoistway wall 14.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a hooking device, and more particularly to a device for attaching a hook at the end of a lanyard in a fall arrest device (formerly known as a "safety belt") worn when working on an elevator landing during elevator installation work. [Background technology]

[0002] Before elevator installation work begins, the building only has the hoistway opened during construction work and openings that connect to the hoistway and serve as landing entrances and exits on each floor. During elevator installation work, various tasks are carried out not only within the hoistway but also at the landings on each floor, i.e., near the openings.

[0003] For example, installation of jambs, door closers, and landing doors. When carrying out the above-mentioned installation and other landing work, workers must wear fall arrest equipment and hang the hook at the end of the lanyard from an appropriate piece of equipment or fixture to prevent serious injury from falling into the elevator shaft through the opening.

[0004] However, in the early stages of elevator installation work, there is no suitable equipment or fixture near the opening to hang the hook on. For this reason, for example, in the case of a building with a reinforced concrete (RC) structure, an anchor is driven into the wall (outer wall of the elevator shaft) near the opening, a ring-shaped member is fixed to the tip of the anchor, and the hook is hung on the ring.

[0005] However, it is time-consuming to drive anchors into each landing and then remove the anchors after the required landing work is completed. Also, the pilot holes drilled for driving the anchors are only necessary for the landing work in question, and are no longer needed after the elevator is completed (after the required landing work is completed).

[0006] Patent Document 1 and Patent Document 2 disclose devices for attaching hooks that are installed at each landing on each floor (safety belt hook device 30 (Fig. 1, Fig. 2) in Patent Document 1, safety belt hook device 20 (Fig. 3) in Patent Document 2). However, both devices are used for maintenance and inspection after the elevator is completed, and are installed on the three-sided jamb (

[0040] in Patent Document 1, Fig. 1,

[0007] ,

[0008] ) And, naturally, it cannot be used during the installation of the three-sided jamb, which is part of the landing work. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-050047 [Patent Document 2] JP 2011-190076 A Summary of the Invention [Problem to be solved by the invention]

[0008] In view of the above-mentioned problems, the present invention aims to provide a hook hanging device that can hang the hook at the end of a lanyard in a fall arrest device worn when working on an elevator landing during elevator installation work, without drilling holes that are unnecessary for the completed elevator. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the hook hanging device of the present invention is a hook hanging device for hanging a hook at the end of a lanyard in a fall arrest device worn when working at a landing during elevator installation work, and is characterized in that it includes: a longitudinal member that is inserted into a wire entry hole opened in the hoistway wall to pull in wiring from equipment installed on the landing side into the hoistway, a stopper member that is attached to the hoistway side end of the longitudinal member and abuts the hoistway inner wall to prevent the longitudinal member from coming off towards the landing side, and a hook hanging member that is attached to the exposed part of the longitudinal member on the landing side and on which the hook is hung, and is configured to be fixed to the hoistway wall.

[0010] The anti-slip member is attached to the longitudinal member so as to be rotatable around the attachment point to the longitudinal member between an unfolded position in which it intersects with the longitudinal member in a T-shape and a folded position in which it follows the longitudinal direction of the longitudinal member, and in the folded position, the anti-slip member can be inserted into the entry hole with the anti-slip member at the front from the landing side until the entire anti-slip member protrudes into the elevator shaft, and in the unfolded position, it is configured to abut against the inner wall of the elevator shaft.

[0011] Furthermore, the present invention is characterized in that a position change means is provided for changing the position of the anti-slip member from the folded position to the unfolded position when the entire anti-slip member is protruding into the elevator shaft in the folded position.

[0012] Furthermore, the posture change means is configured so that a first moment of force centered on the mounting member of the first end side portion from the mounting location to the first end of the anti-slip member is set to be greater than a second moment of force of the second end side portion up to the second end, and the folded posture is achieved by the first end side portion abutting the longitudinal member from above or the second end side portion abutting the longitudinal member from below, and from the folded posture, by rotating the longitudinal member half a turn around its axis, due to the magnitude relationship between the first moment and the second moment, the first end side portion rotates downward and the second end side portion rotates upward to achieve the unfolded posture.

[0013] The longitudinal member further includes a main body portion to which the anti-slip member is attached, and an extension portion that is attachable and detachable to the main body portion, and is characterized in that at least when inserted into the line entry hole, the extension portion is attached to the main body portion, and when fixed to the elevator shaft wall, the extension portion is detached from the main body portion. [Effects of the Invention]

[0014] The hook hanging device of the present invention is configured to be fixed to the elevator shaft wall using the above-mentioned wire entry hole, so it can be used without drilling holes that are unnecessary for the completed elevator. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing a schematic configuration of a hook hanging device according to an embodiment. [Figure 2] (a) is a front view of the anti-slip member, (b) is a plan view of the same, (c) is a front view of the main body, (d) is a right side view of the same, (e) is a plan view of the same, (f) is a front view of the weight, and (g) is a right side view of the same. [Figure 3](a) is a plan view of the tip of the hooking device, (b) is a cross-sectional view taken along line A-A in Fig. 1, and (c) is a cross-sectional view taken along line B-B in (b). (d) is a diagram showing the shape of the potbelly hole in the hooking part. [Figure 4] 10A and 10B are diagrams for explaining the operation of the position changing means of the retaining member in the hook hanging device. [Figure 5] 10A and 10B are diagrams for explaining the operation of the position changing means of the retaining member in the hook hanging device. [Figure 6] (a) is a view of the elevator entrance / exit opening in a building under construction, seen from the landing side towards the hoistway, (b) is an enlarged view of the entrance hole in the hoistway wall, and (c) is a cross-section of line C-C in (b). [Figure 7] 10A to 10C are explanatory diagrams illustrating a procedure for attaching the hook hanging device to the hoistway wall. [Figure 8] FIG. 10 is an explanatory diagram of a procedure for attaching the hook hanging device to the elevator shaft wall. [Figure 9] FIG. 10 is an explanatory diagram of a procedure for attaching the hook hanging device to the elevator shaft wall. [Figure 10] 10A to 10C are explanatory diagrams of a procedure for removing the hook hanging device from the hoistway wall. [Figure 11] 10A to 10C are explanatory diagrams of a procedure for removing the hook hanging device from the hoistway wall. [Figure 12] 1A and 1B show a front view and a left side view, respectively, of a hook hanging member according to a first modified example. [Figure 13] 10A shows a front view, FIG. 10B shows a plan view, and FIG. 10C shows a left side view of a hook hanging member according to a second modification. [Figure 14] 10 is an explanatory diagram of a method of using a hook hanging device according to Modification 3. FIG. [Figure 15] 10 is an explanatory diagram of a method of using a hook hanging device according to Modification 3. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, a hook hanging device according to the present invention will be described based on an embodiment with reference to the drawings. Fig. 1 shows a schematic configuration of a hook hanging device 100 according to an embodiment. Fig. 1 also shows the state in which the hook hanging device 100 is carried. Note that the scales of the components in each drawing are not necessarily uniform.

[0017] The hooking device 100 is broadly composed of a longitudinal member 200, a retaining member 300, and a hooking member 400.

[0018] The longitudinal member 200 includes a main body 210 and an extension 220. The main body 210 is configured by connecting a rod bolt 211 and a cut bolt 212 with a long nut 213. On both sides of the long nut 213, locking nuts 214 and 215 are threadedly engaged with the threaded portion 211a of the rod bolt 211 and the cut bolt 212, respectively, to prevent the connection between the rod bolt 211 and the cut bolt 212 from loosening.

[0019] The extension 220 is made of a rod material, and has an internal thread 220a formed at one end into which the threaded bolt 212 is threaded. Reference numeral 102 denotes a locking nut. An internal thread 220b is also formed at the other end of the extension 220, and an eyebolt 104 is threaded into the internal thread 220b as a hanging device.

[0020] The retaining member 300 is attached to one end of the elongate member 200. A front view of the retaining member 300 is shown in Fig. 2(a), and a plan view of the same is shown in Fig. 2(b). The retaining member 300 includes a main body 310 and a weight 311. Both the main body 310 and the weight 311 are formed from a steel material.

[0021] A front view of the main body 310 is shown in Fig. 2(c), a right side view in Fig. 2(d), and a plan view in Fig. 2(e). The main body 310 has an overall U-shaped groove cross section. At one end, portions of both side walls of the groove have been removed, leaving only the bottom of the groove, forming a rectangular tongue portion 310a.

[0022] Mountain-shaped portions 310b and 310c, which protrude in an isosceles trapezoidal shape beyond the remaining side wall portions, are formed on both side wall portions at the center in the longitudinal direction of the portion excluding tongue portion 310a of main body 310. In addition, holes 310d and 310e are opened in the center both side wall portions, penetrating in the thickness direction.

[0023] Figure 2(f) shows a front view of weight portion 311, and Figure 2(g) shows a right side view of the same. Weight portion 311 has an overall U-shaped cross section and is a groove shape that is shallower than main body portion 310. At one end, part of the bottom of the groove has been removed, leaving only both side walls to form protrusions 311a and 311b.

[0024] Weight portion 311 is joined to main body portion 310 by welding with a portion of weight portion 311 overlapping main body portion 310. Specifically, as shown in Figures 2(a) and 2(b), protrusions 311a and 311b of weight portion 311 are inserted outside both side walls of main body portion 310, and the bottom surface of weight portion 311 is overlapped with tongue portion 310a of main body portion 310, and spot welding is applied to the boundaries indicated by arrows (A) and (B) (weld marks are not shown).

[0025] The retaining member 300 having the above-described configuration is attached to the tip portion of the longitudinal member 200 (rod bolt 211). Fig. 3(a) shows a plan view of the tip of the rod bolt 211 in the hook hanging device 100 and its vicinity.

[0026] 1 and 3(a), ring portion 211b at the end of rod bolt 211 is inserted into the longitudinal center of the groove in main body 310, and holes 310d, 310e (FIGS. 2(c) and 2(d)) of main body 310 communicate with the hole in ring portion 211b, and hinge pin 106, which has a flange on one end and a groove on the other end, is inserted into these holes. A C-shaped retaining ring 108 is fitted into the groove of hinge pin 106 to prevent it from coming out.

[0027] As a result, retaining member 300 is attached to longitudinal member 200 so as to be rotatable about hinge pin 106 (attachment portion to longitudinal member 200), which is an attachment member. Since retaining member 300 is provided with weight portion 311 at one end, the axis of hinge pin 106 is in the horizontal direction, and a difference is generated in the moment of force (gravity) about the axis (attachment portion) between the side with weight portion 311 and the side without weight portion 311, with hinge pin 106 as the boundary.

[0028] Here, as shown in Figure 1, in the anti-slip member 300, the portion from the hinge pin 106 (the attachment site to the longitudinal member 200) to the end on the side where the weight portion 311 is present will be referred to as the first end portion 300H, and the portion to the end on the side where the weight portion 311 is not present will be referred to as the second end portion 300L.

[0029] The first end portion 300H and the second end portion 300L differ in length, the presence or absence of the weight portion 311, and the like, resulting in a difference in the moment (hereinafter simply referred to as "moment") of the force (gravity) centered on the hinge pin 106 when the axis of the hinge pin 106 is in a horizontal position. That is, the moment of the first end portion 300H is larger than that of the second end portion 300L. The magnitudes of both moments vary depending on the rotation angle of the retaining member 300, but the above-mentioned magnitude relationship remains unchanged.

[0030] By utilizing the difference in the moments, the hook hanging device 100 can be changed between an unfolded position (FIGS. 1, 5(c), etc.) in which the retaining member 300 intersects with the longitudinal member 200 in a T-shape, and a folded position (FIGS. 4(b), 4(c), etc.) in which the retaining member 300 is aligned along the length direction of the longitudinal member 200. In other words, the configuration that generates the difference in the moments functions as a position changing means that changes between the folded position and the unfolded position.

[0031] The operation of this position changing means will be described with reference to Figures 1, 4, and 5. The longitudinal member 200 is rotated half a turn about its axis (arrow T1) from a state in which the first end portion 300H is downward relative to the hinge pin 106 as shown in Figure 1, so that the first end portion 300H is upward. Then, depending on the slight difference in the angle of the retaining member 300 relative to the axis of the hinge pin 106, the retaining member 300 rotates in the direction of arrow R1 or the direction of arrow R2 as shown in Figure 4(a).

[0032] When rotated in the direction of arrow R1, the first end portion 300H comes into contact with the longitudinal member 200 from above and assumes the folded position, as shown in Fig. 4(b). On the other hand, when rotated in the direction of arrow R2, the second end portion 300L comes into contact with the longitudinal member 200 from below and assumes the folded position, as shown in Fig. 4(c).

[0033] When the longitudinal member 200 is rotated half a turn around its axis (arrow T2) from the folded position shown in Figure 4(b), as shown in Figure 5(a), due to the magnitude relationship between the moments around the hinge pin 106 of the first end side portion 300H and the second end side portion 300L, the first end side portion 300H rotates downward (arrow R3) and the second end side portion 300L rotates upward (arrow R4), resulting in the unfolded position shown in Figure 5(c).

[0034] Furthermore, even if the longitudinal member 200 is rotated half a turn around its axis (arrow T3) from the folded posture shown in Figure 4(c), as shown in Figure 5(b), due to the magnitude relationship between the moments around the hinge pin 106 of the first end side portion 300H and the second end side portion 300L, the first end side portion 300H rotates downward (arrow R6) and the second end side portion 300L rotates upward (arrow R5), resulting in the unfolded posture shown in Figure 5(c).

[0035] Next, the hook hanging member 400 will be described with reference to Fig. 1, Fig. 3(b), Fig. 3(c), and Fig. 3(d). Fig. 3(b) is a cross-sectional view taken along line A-A in Fig. 1, and Fig. 3(c) is a cross-sectional view taken along line B-B in Fig. 3(b). Fig. 3(d) is a diagram showing the shape of a potbelly hole 411 opened in a bottom plate portion 410, which will be described later. Note that Fig. 3(b) omits the illustration of members that appear behind the hook hanging member 400.

[0036] The hook hanging member 400 is manufactured by bending steel plate, etc., and includes a rectangular bottom plate portion 410 and side plate portions 420 and 430 that are bent at right angles from both long sides of the bottom plate portion 410, and has a groove-like cross section that is U-shaped.

[0037] Each of the side plate portions 420 and 430 has a circular hole formed in the thickness direction thereof, and the circular holes are hook hook portions 421 and 431 for hanging hooks as will be described later.

[0038] A potbellied hole 411 is formed in the thickness direction of the bottom plate 410. The potbellied hole 411 is made up of a circular portion 411a and an elongated hole portion 411b communicating with the circular portion 411a.

[0039] In Figure 1, threaded onto the cut bolt 212 between the side plate portion 420 and the side plate portion 430 (not shown in Figure 1) is a fixing nut 110 used to secure the hook hanging member to the longitudinal member 200 during transportation and to secure the hook hanging device 100 to the elevator shaft wall 14 (Figure 6), as will be described later.

[0040] The hook hanging device 100 having the above-described configuration is used by being fixed to a hoistway wall. Fig. 6(a) is a view of an opening 10 that will serve as an elevator hall entrance / exit in a reinforced concrete (RC) building under construction, viewed from the hall side toward the hoistway, Fig. 6(b) is an enlarged view of a line entrance hole 12 opened in a hoistway wall 14, and Fig. 6(c) is a cross-sectional view along line C-C in Fig. 6(b).

[0041] In elevator installation work, at the start of landing work, as described above, the hoistway opened during construction work and the openings 10 that communicate with the hoistway and serve as landing entrances and exits on each floor are already open. In addition, a through-hole, i.e., an inlet hole 12, is opened in the hoistway wall 14 to allow wiring from devices such as call button devices installed on the landing side to be pulled into the hoistway. The diameter of the inlet hole 12 is, for example, 40 mm. The hook hanging device 100 is fixed to the hoistway wall 14 using the inlet hole 12.

[0042] Next, the procedure for attaching (fixing) the hook hanging device 100 to the hoistway wall 14 and the procedure for removing it will be described with reference to FIG. 1 and FIGS. 7 to 11 in turn.

[0043] First, the hook hanging member 400 is removed from the longitudinal member 200. Specifically, from the state shown in Fig. 1, the fixing nut 110 is loosened as shown in Fig. 7(a), the hook hanging member 400 is lifted up, and the hook hanging member 400 is pulled out from the longitudinal member 200 through the circular portion 411a of the potbelly hole 411 (Figs. 3(b) and 3(d)) (arrow A).

[0044] The longitudinal member 200 is rotated half a turn around its axis (arrow B) to assume a folded position in which the first end side portion 300H abuts the longitudinal member 200 from above, as shown in Figure 7(b), and the extension portion 220 of the longitudinal member 200 is held and inserted into the entrance hole 12 from the landing side, with the anti-slip member 300 at the front (arrow C).

[0045] When the longitudinal member 200 is inserted until the entire anti-slip member 300 protrudes (enters) into the elevator shaft, the longitudinal member 200 is rotated half a turn around its axis (arrow D) to place the anti-slip member 300 in the deployed position (arrow E) as shown in Figure 7(c).

[0046] The long member 200 is pulled toward the front (toward the landing) so that the retaining member 300 comes into contact with the hoistway inner wall 14a (arrow F). Then, the hook hanging member 400 is fitted onto the long member 200. Specifically, after the long member 200 is passed through the circular portion 411a of the potbelly hole 411 (FIGS. 3(b) and 3(d)), the hook hanging member 400 is lowered so that the long member 200 enters the elongated hole portion 411b (FIGS. 3(b) and 3(d)) (arrow G).

[0047] With the retaining member 300 abutting against the hoistway inner wall 14a and the hook hanging member 400 abutting against the hoistway outer wall 14b, the fixing nut 110 is tightened (arrow H). Then, the extension portion 220 of the longitudinal member is removed from the main body portion 210 (arrow I). By removing it, the protruding length from the hoistway outer wall 14b can be shortened, thereby preventing work clothes and the like from getting caught during work at the landing.

[0048] By the above-described procedure, as shown in Figure 8(c), the hook hanging device 100 is fixed to the hoistway wall 14, and includes the longitudinal member 200 to be inserted into the inlet hole 12, the anti-slip member 300 attached to the hoistway side end of the longitudinal member 200 and abutting against the hoistway inner wall 14a to prevent the longitudinal member 200 from slipping out toward the landing side, and the hook hanging member 400 attached to the exposed portion of the longitudinal member 200 on the landing side.

[0049] The hook hanging device 100 (Figure 9(a)) fixed to the elevator shaft wall 14 is used by hanging a hook Hk at the end of a lanyard of a fall arrest device worn by a worker when working at the landing on either or both of the hook hanging portions 421 and 431 (Figure 9(b)).

[0050] The removed extension part 220 can be hung by passing the ring part of the eyebolt 104 provided at one end of the extension part 220 through the cut bolt 212 of the main body part 210 (Fig. 9(c) and Fig. 9(d)), thereby preventing the extension part 220 from being lost during work at the landing.

[0051] Next, the procedure for removing the hook hanging device 100 from the hoistway wall 14 will be described. First, attach the extension part 220 to the main body part 210 (Fig. 10(a)).

[0052] Loosen the fixing nut 110 and remove the hook hanging member 410 from the long member 200 (arrow J in Fig. 10(b)).

[0053] Hold the extension part 220 and push the entire hook hanging device 100 into the hoistway (arrow K in Fig. 10(c)), and rotate the extension part 220 (long member 200) halfway around its axis (arrow L in Fig. 10(c)).

[0054] Then, the retaining member 300 rotates clockwise as shown by arrow M in Fig. 11(a) or counterclockwise as shown by arrow N in Fig. 11(b) around the hinge pin 106 (attachment site), and the first end side portion 300H contacts the long member 200 from above (Fig. 11(a)) or the second end side portion 300L contacts the long member 200 from below (Fig. 11(b)), resulting in a folded posture. Whether it is in the folded posture can be confirmed by the feeling when the retaining member 300 contacts the long member 200.

[0055] While in the folded posture, pull the extension part 220 forward (landing side) (arrow P) and remove the entire hook hanging device 100 from the wire inlet hole 12. Then, attach the hook hanging member 400 to the long member 200 again to make it portable (Fig. 11(c)).

[0056] As described above, the hook hanging device 100 according to the embodiment includes a long member 200 inserted into the wire inlet hole 12 formed in the hoistway wall for drawing wiring from a device provided on the landing side into the hoistway, a retaining member 300 attached to the hoistway side end of the long member 200 and contacting the inner wall 14a of the hoistway to prevent the long member 200 from coming out toward the landing side, and a hook hanging member 400 attached to the exposed portion of the long member 200 on the landing side where the hook Hk at the end of the lanyard of the fall prevention device is hooked, and is configured to be fixed to the hoistway wall 14.

[0057] In other words, the hook hanging device 100 is configured to be fixed to the elevator shaft wall 14 using the above-mentioned line entry hole 12, so it is a hook hanging device that can be used without drilling unnecessary holes in the completed elevator.

[0058] Furthermore, in the hook hanging device 100 according to the embodiment, the anti-slip member 300 is attached to the longitudinal member 200 so as to be rotatable around the hinge pin 106, which is the attachment point to the longitudinal member 200, between an unfolded position in which it intersects with the longitudinal member 200 in a T-shape, and a folded position in which it is oriented along the length of the longitudinal member 200. In the folded position, the anti-slip member 300 can be inserted into the inlet hole 12 from the landing side, with the anti-slip member 300 at the front, until the entire anti-slip member 300 protrudes into the hoistway, and in the unfolded position, the anti-slip member 300 abuts against the inner wall 14a of the hoistway. In the folded position, with the entire anti-slip member 300 protruding into the hoistway, the hook hanging device 100 has a position change means for changing the anti-slip member 300 from the folded position to the unfolded position.

[0059] This allows the worker to attach the hook hanging device 100 to the hoistway wall 14 while remaining on the landing side, for example, without having to lean into the hoistway.

[0060] Furthermore, the posture change means is configured such that the first moment of force (gravity) centered on the hinge pin 106 of the first end side portion 300H of the anti-slip member 300 from the hinge pin 106 to the first end is set to be greater than the second moment of force (gravity) of the second end side portion 300L to the second end, and the folded posture is achieved by the first end side portion 300H abutting the longitudinal member 200 from above, or the second end side portion 300L abutting the longitudinal member 200 from below, and from the folded posture, by rotating the longitudinal member 200 half a turn around its axis, due to the magnitude relationship between the first moment and the second moment, the first end side portion 300H rotates downward and the second end side portion 300L rotates upward to achieve the unfolded posture.

[0061] This allows the folding posture to be changed to the unfolded posture with the above-described simple configuration without providing a special mechanism.

[0062] Furthermore, the longitudinal member 200 includes a main body 210 to which the anti-slip member 300 is attached, and an extension 220 that is attachable and detachable to the main body 210, and when inserted into at least the inlet hole 12, the extension 220 is attached to the main body 210, and when fixed to the elevator shaft wall 14, the extension 220 is detached and used.

[0063] This allows the length of protrusion from the outer wall 14b of the elevator shaft to be shortened, thereby preventing work clothes and the like from getting caught during work at the landing.

[0064] Up to this point, the hook hanging device according to the present invention has been described based on the embodiment, but the present invention is not limited to the above-described embodiment, and can also be modified as follows, for example.

[0065] (Variation 1) In the above embodiment, in the hook hanging member 400, the hook hanging portions 421 and 431 are provided on the side plate portions 420 and 430, respectively, but the present invention is not limited to this and may be configured as follows.

[0066] Fig. 12(a) shows a front view of a hook hanging member 800 in a hook hanging device according to Modification 1, and Fig. 12(b) shows a left side view of the same. Hook hanging member 800 is made by bending a substantially rectangular steel plate into a V-shape. That is, hook hanging member 800 has a base plate portion 860 and a slanted plate portion 870 extending obliquely from one short side of base plate portion 860.

[0067] The base plate portion 860 is provided with a potbellied hole 861, which is formed of a circular portion 861a and an elongated hole portion 861b, similar to the potbellied hole 411 of the hook holder 400 (FIG. 3(d)).

[0068] The swash plate portion 870 has a circular hole formed in its thickness direction, and the circular hole serves as a hook hanging portion 871 of the hook hanging member 800.

[0069] (Variation 2) In the above embodiment, the hook hanging member 400 has circular holes in the side plate portions 420 and 430, respectively, which are used to hang the hooks Hk, and these are called hook hanging portions 421 and 431, but this is not limited to this and may be done as follows.

[0070] Fig. 13(a) shows a front view of a hook hanging member 500 in a hook hanging device according to Modification 2, Fig. 13(b) shows a plan view thereof, and Fig. 13(c) shows a left side view thereof. In the hook hanging member 500, instead of the hook hanging portions 421 and 431 of the above embodiment, a bar material is hung between the side plate portions 520 and 530, and this serves as a hook hanging portion 550.

[0071] Both ends of the hook hanging portion 550 (bar material) are fixed to the side plate portions 520 and 530, respectively, by welding or the like. Other than the above, the hook hanging member 500 according to the second modified example has the same configuration as the hook hanging member 400 of the above embodiment. Therefore, the components of the hook hanging member 500 are given reference numerals in the 500 series, and the last two digits of the reference numerals of the corresponding components in the hook hanging member 400 are given, and the explanations thereof will be omitted.

[0072] (Variation 3) Modification 3 relates to the configuration of the position-changing means for the retaining member. A hook hanging device 600 according to Modification 3 will be described with reference to Figures 14 and 15. In Figures 14 and 15, the same components as those in the hook hanging member 100 according to the above embodiment are given the same reference numerals, and their description will be omitted or only mentioned where appropriate. The following description will focus on the differences.

[0073] In the above embodiment, the anti-slip member 300 has a difference in moment at both ends separated by the attachment point (hinge pin 106) to the longitudinal member 200. However, in variant example 3, as shown in Figure 14(a), both sides of the attachment point (hinge pin 106) are symmetrical so that there is no difference in moment.

[0074] A hole 710a is formed near the angled portion 710 of the retaining member 700 in Modification 3. One end of a flexible wire 720 that is slightly longer than the longitudinal member 200 is fixed to the hole 710a.

[0075] When attaching the hook hanging device 600 to the elevator shaft wall 14, first, as shown in Fig. 14(b), the retaining member 700 is folded down with fingers or the like to assume a folded position. In this state, the extension 220 is grasped, and the retaining member 700 is inserted into the entrance hole 12 from the hall side, with the retaining member 700 at the front (arrow Q).

[0076] With the entire retaining member 700 inserted into the hoistway, the extension 220 (longitudinal member 200) is rotated somewhat vigorously around its axis (arrow R). This causes centrifugal force to act on the retaining member 700, causing it to open in a direction intersecting the direction along the longitudinal member 200 (arrows S and T). In this state, the extension 220 is pulled forward (toward the landing) and the retaining member 700 abuts against the hoistway inner wall 14a. As a result, the retaining member 700 abuts against the hoistway inner wall 14a in an expanded position intersecting the longitudinal member 200 in a T-shape (not shown). The subsequent installation procedure is the same as in the first embodiment.

[0077] To remove the hook hanging device 600 from the hoistway wall 14, hold the extension 220 and push the hook hanging device 600 toward the hoistway (arrow U in FIG. 15(a)). Then, pull the wire 720 toward you (toward the landing) (arrow V). Then, no matter what angle the retaining member 700 is at relative to the longitudinal member 200, it will rotate around the axis of the hinge pin 106 and assume the folded position (FIGS. 15(b) and 15(c)). The procedure thereafter is the same as in the first embodiment.

[0078] The hook hanging device according to the present invention has been described above based on an embodiment and its modified examples, but it goes without saying that the present invention is not limited to the above-described form, and for example, the following form is also possible.

[0079] (1) The position changing means for changing the retaining member between the folded position and the unfolded position may be, instead of the above, for example, as follows: A torsion coil spring (not shown) is used instead of wire 720 of Modification Example 3. Although the torsion coil spring is not shown, a case where it is assumed that a torsion coil spring is used will be described using FIG. 14.

[0080] The coil portion of the torsion coil spring is passed through the hinge pin 106. One arm of the torsion coil spring is hooked onto the main body 210 of the elongate member 200, and the other arm is brought into contact with the groove of the retaining member 300. The torsion coil spring is designed to exert a biasing force (restoring force) that causes the retaining member to assume the folded position, and this restoring force is weak, as will be described later.

[0081] The biasing force (restoring force) of the torsion coil spring causes the retaining member 700 to assume the folded position as shown in FIG. 14(b). To change from the folded position to the deployed position, as shown in FIG. 14(c), with the entire retaining member 700 inserted into the hoistway, the extension 220 (longitudinal member 200) is vigorously rotated about its axis. This causes the centrifugal force acting on the retaining member 700 to exceed the biasing force of the torsion coil spring, and the retaining member 700 opens in the direction toward the deployed position. The extension 220 is then quickly pulled toward the front (toward the landing), and the retaining member 700 is brought into contact with the hoistway inner wall 14a, and then pulled further to assume the deployed position. The subsequent installation procedures are the same as those in the first embodiment and the third modification.

[0082] To remove the hook hanging device 600 from the hoistway wall 14, hold the extension 220 and push the hook hanging device 600 toward the hoistway (FIG. 15(a), arrow U). Then, the restoring force of the torsion coil spring causes the retaining member 700 to change from the unfolded position to the folded position (FIGS. 15(b), 15(c)). The procedures thereafter are the same as those in the first embodiment and the third modification.

[0083] (2) In the above embodiment, the hook hanging member 400 is used as one of the members for fixing the entire hook hanging device 100 to the elevator shaft wall 14, but the present invention is not limited to this and may be configured as follows.

[0084] For example, a metal disk (not shown) may be used instead of the hook hanging member 400 as a member for fixing the entire hook hanging device 100 to the elevator shaft wall 14. A potbelly hole 411 is opened in the center of the metal disk.

[0085] Then, with the metal disk in contact with the hoistway outer wall 14b, the fixing nuts 110 are tightened to fix the entire hook hanging device 100 to the hoistway wall 14. In this case, the hook hanging member 400 is provided with a pair of nuts threaded onto the cut bolts 212 on both sides of the bottom plate portion 410, and the hook hanging member 400 is attached (fixed) to the exposed part of the longitudinal member 200 on the landing side by clamping the bottom plate portion 410 with the pair of nuts. [Industrial Applicability]

[0086] The hook hanging device of the present invention can be suitably used as a device for hanging the hook at the end of a lanyard in a fall arrest device worn when working on an elevator landing during elevator installation work. [Explanation of symbols]

[0087] 100, 600 Hook Hanging Device 200 Longitudinal Members 300, 700 retaining member 400, 500, 800 Hook hanging parts

Claims

1. A hooking device for hanging the hook at the end of a lanyard in a fall arrest device worn during elevator installation work, a longitudinal member inserted into a wire entry hole formed in the hoistway wall for pulling wiring from equipment provided on the landing side into the hoistway; a retaining member attached to the hoistway side end of the longitudinal member and abutting against an inner wall of the hoistway to prevent the longitudinal member from slipping out toward the landing side; a hook hanging member attached to the landing side exposed portion of the longitudinal member and on which the hook is hung; Including, A hook hanging device configured to be fixed to the elevator shaft wall.

2. the retaining member is attached to the longitudinal member so as to be rotatable around an attachment portion to the longitudinal member between an unfolded position in which the retaining member intersects with the longitudinal member in a T-shape and a folded position in which the retaining member is oriented along the length direction of the longitudinal member, The hook hanging device according to claim 1, characterized in that, in the folded position, the anti-slip member can be inserted into the inlet hole from the landing side until the entire anti-slip member protrudes into the elevator shaft, and in the unfolded position, it abuts against the inner wall of the elevator shaft.

3. The hook hanging device according to claim 2, further comprising a position change means for changing the anti-slip member from the folded position to the unfolded position when the entire anti-slip member is protruding into the elevator shaft in the folded position.

4. The attitude changing means is a first moment of force about the mounting member in a first end side portion of the retaining member from the mounting portion to the first end is set to be larger than a second moment of force in a second end side portion of the retaining member up to the second end, the folded position is achieved by the first end portion abutting against the longitudinal member from above or the second end portion abutting against the longitudinal member from below, The hook hanging device according to claim 3, characterized in that by rotating the longitudinal member half a turn around its axis from the folded position, the first end portion rotates downward and the second end portion rotates upward to assume the unfolded position due to the magnitude relationship between the first moment and the second moment.

5. the longitudinal member includes a main body to which the retaining member is attached, and an extension portion provided so as to be attachable to and detachable from the main body, At least when inserting the wire into the wire entrance hole, the extension portion is attached to the main body portion, The hooking tool according to any one of claims 1 to 4, characterized in that when the tool is fixed to the elevator shaft wall, the extension portion is detached from the main body portion and the tool is used.

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