JP6520989B2 - Rope detachment prevention jig for elevators and rope replacement method for elevators - Google Patents

Description

  The present invention relates to an elevator rope prevention jig and an elevator rope replacement method.

  The rope elevator comprises a rope wound around a sheave. As a technique for replacing the rope of the elevator, for example, there is one described in Patent Document 1 below.

Unexamined-Japanese-Patent No. 6-255938

  Patent Document 1 discloses a method of replacing an elevator rope of a machine room type. On the other hand, different methods are used to replace the ropes of machine-less elevators. It takes time to rework if the ropes come off the sheaves in the hoistway when replacing the elevator room ropes without machine room.

  This invention was made in order to solve said subject. An object of the present invention is to provide an elevator rope detachment preventing jig and an elevator rope replacement method capable of preventing the rope from coming off from the sheave at the time of rope replacement.

The rope detachment prevention jig for an elevator according to the present invention includes a first support member attached to the front cover of the sheave, a second support member attached to the rear cover of the sheave, and a rod-like member and a thickness of the rod-like member The rod-like member is inserted into the tubular member, and the tubular member is inserted into the tubular member, and the tubular member is wound around the rope around the front cover and the back of the rope. One of the end portions is supported by the first support member and the other end portion is supported by the second support member in a contactable and rotatable state with the side cover .

  The rope replacing method of an elevator according to the present invention comprises the steps of: removing the detent from the cover of the sheave provided in the hoistway and attaching the above-mentioned rope detachment preventing jig; With the new rope connected to one end of the old rope, pull the old rope toward the other end to replace the old rope with the new rope, move the rope, and remove the rope jig from the sheave cover And Jig removal step of removing and attaching a detent.

  According to the present invention, the pressing member of the rope detachment preventing jig is fixed in contact with the rope wound around the sheave. For this reason, it is possible to prevent the rope from coming off from the sheave at the time of rope replacement.

It is a schematic diagram which shows an example of the structure of an elevator. It is a front view of a weight suspension car. It is a side view of a weight suspension car. It is a top view of a weight suspension truck. It is a figure which shows the state which the rope removal prevention jig in Embodiment 1 was decomposed | disassembled. It is a figure which shows the state in which the rope detachment prevention jig in Embodiment 1 was assembled. It is a front view of the weight suspension car in the state where the rope detachment prevention jig in Embodiment 1 was attached. It is a side view of the weight suspension car in the state where the rope detachment prevention jig in Embodiment 1 was attached. It is a top view of the weight suspension truck in the state where the rope detachment prevention jig in Embodiment 1 was attached.

  A mode for carrying out the present invention will be described with reference to the attached drawings. In each of the drawings, the same or corresponding parts are denoted by the same reference numerals. Duplicate descriptions will be simplified or omitted as appropriate.

Embodiment 1
FIG. 1 is a schematic view showing an example of the structure of an elevator. FIG. 1 exemplifies the structure in the hoistway of a machine room type rope elevator.

  As shown in FIG. 1, the elevator 1 includes a hoisting machine 2, a rope 3, a car 4 and a counterweight 5. The elevator 1 includes a plurality of sheaves provided in a hoistway. The sheave includes, for example, a drive sheave of the hoisting machine 2, a car suspension car 6, a weight suspension car 7 and a return car 8. The rope 3 is wound around, for example, a drive sheave of the hoisting machine 2, a car suspension car 6, a weight suspension car 7 and a return car 8. The end of the rope 3 is supported by, for example, a beam (not shown) in the hoistway. The car 4 is suspended by the rope 3 in the hoistway via the car lift 6. The counterweight 5 is suspended by the rope 3 in the hoistway via a weight suspension wheel 7. The car 4 and the counterweight 5 move up and down by driving the hoisting machine 2. The hoisting machine 2 is controlled by a control panel (not shown).

  FIG. 2 is a front view of a weight suspension car. FIG. 3 is a side view of a weight hanging car. FIG. 4 is a top view of the weight hanging car. 2 to 4 show the state of the weight suspension car 7 when the elevator 1 is in normal operation. Hereinafter, description will be made with reference to FIGS. 2 to 4.

  The rope 3 is wound around the lower part of the weight suspension wheel 7. For example, a plurality of ropes 3 are provided. Each rope 3 is wound along each rope ditch of the weight suspension wheel 7. A sheave cover 9 is provided around the weight suspension wheel 7. The sheave cover 9 includes, for example, a front cover 10 and a rear cover 11. The front cover 10 is located in front of the weight suspension wheel 7. The rear cover 11 is located behind the weight suspension wheel 7. The rear cover 11 is formed, for example, in the same shape as the front cover 10. The rotation shaft 12 of the weight suspension wheel 7 is fixed to the sheave cover 9, for example, by connecting the front cover 10 and the rear cover 11.

  A through hole 13 and a through hole 14 are formed in the front cover 10. The through holes 13 and the through holes 14 pass through the front cover 10 in the back and forth direction. The through holes 13 and the through holes 14 are, for example, elongated holes formed longitudinally. The through holes 13 and the through holes 14 are formed, for example, at the same height as the rotation shaft 12 in the vertical direction. The through hole 14 is formed, for example, at a position symmetrical with the through hole 13 about the rotation axis 12 viewed from the front.

  The through hole 13 is formed, for example, at a position corresponding to the vicinity of the right end of the weight suspension wheel 7 when viewed from the front. For example, the through hole 13 is not formed at a position corresponding to the left side of the right end of the weight suspension wheel 7 when viewed from the front.

  The through hole 14 is formed, for example, at a position corresponding to the vicinity of the left end of the weight suspension wheel 7 when viewed from the front. The through hole 14 is not formed, for example, at a position corresponding to the right side of the left end of the weight suspension wheel 7 when viewed from the front.

  Although not shown, a through hole 13 and a through hole 14 are also formed in the rear cover 11. The through hole 13 of the rear cover 11 faces, for example, the through hole 13 of the front cover 10 in the front-rear direction. The through hole 14 of the rear cover 11 faces, for example, the through hole 14 of the front cover 10 in the front-rear direction.

  A detent 15 is attached to the sheave cover 9. Two sheaves 15 are attached to the sheave cover 9 of the weight suspension wheel 7, for example. The detent 15 is, for example, a plate-like member having one continuous piece and another piece at right angles. The detent 15 has, for example, an L-shape when viewed from above and below. One piece of the detent 15 is, for example, fixed to the front surface of the front cover 10 by a bolt or the like.

  For example, one piece of the one detent 15 is fixed at the same height as the rotating shaft 12 with the other piece passed through the through hole 13. The other piece of the detent 15 is, for example, located in the space between the front cover 10 and the rear cover 11 in a state of overlapping all the ropes 3 as viewed in the left-right direction. The other piece of the detent 15 is located, for example, in the space between the front cover 10 and the rear cover 11 in the direction along the rotation axis direction of the weight suspension wheel 7. The other piece of the detent 15 does not contact, for example, the rope 3 and the rear cover 11.

  For example, one piece of the other detent 15 is fixed at the same height as the rotation shaft 12 with the other piece being passed through the through hole 14. The other piece of the detent 15 is, for example, located in the space between the front cover 10 and the rear cover 11 in a state of overlapping all the ropes 3 as viewed in the left-right direction. The other piece of the detent 15 is located, for example, in the space between the front cover 10 and the rear cover 11 in the direction along the rotation axis direction of the weight suspension wheel 7. The other piece of the detent 15 does not contact, for example, the rope 3 and the rear cover 11.

  The detent 15 is removable with respect to the sheave cover 9. The detent 15 may be attached to the sheave cover 9, for example, by securing a piece to the back cover 11.

  FIG. 5 is a view showing a state in which the rope detachment preventing jig in the first embodiment is disassembled. FIG. 5 shows a state in which the two rope detachment prevention jigs are disassembled. FIG. 6 is a view showing a state in which the rope detachment preventing jig in the first embodiment is assembled. FIG. 6 shows a state in which two rope detachment prevention jigs are assembled. Hereinafter, description will be made with reference to FIGS. 5 and 6.

  The rope detachment prevention jig of the elevator includes the first support member 16, the second support member 17, the rod-like member 18 and the cylindrical member 19. The first support member 16 and the second support member 17 are formed, for example, in a plate shape. The cross section of the rod-like member 18 is, for example, circular. For example, a full screw bolt or the like is used as the rod-like member 18.

  The cylindrical member 19 is formed in, for example, a cylindrical shape having an inner diameter larger than the diameter of the cross section of the rod-like member 18. The length of the cylindrical member 19 is shorter than the length of the rod-like member 18. The length of the cylindrical member 19 is shorter than the distance between the front cover 10 and the rear cover 11.

  The cylindrical member 19 is made of, for example, a material softer than the rope 3. The cylindrical member 19 has lower strength against scratching than, for example, the strands forming the rope 3. The strands are formed, for example, by twisting steel wires. The cylindrical member 19 is formed of, for example, a metal whose hardness is lower than that of the strand. The cylindrical member 19 is made of, for example, aluminum or the like.

  The first support member 16 is formed with a through hole 16a and a through hole 16b. The through hole 16a is, for example, a round hole. The through hole 16 b is, for example, a long hole formed long along the longitudinal direction of the first support member 16. For example, a plurality of through holes 16 b are formed. The number of through holes 16 b is, for example, the same as the number of bolts or the like for fixing the detent 15 to the sheave cover 9.

  A through hole 17 a is formed in the second support member 17. The through hole 17a is, for example, a round hole.

  The rod-shaped member 18 is connected to the first support member 16 and the second support member 17 in a state of being inserted into the cylindrical member 19. The rod-like member 18 in a state of being inserted into the cylindrical member 19 and the cylindrical member 19 are collectively referred to as a "pressing member 20". One end of the rod-shaped member 18 is passed through the through hole 16 a of the first support member 16. For example, a nut or the like is attached to one end of the rod-like member 18 on the front side of the first support member 16. The other end of the rod-like member 18 is passed through the through hole 17 a of the second support member 17. For example, a nut or the like is attached to the other end of the rod-like member 18 on the back side of the second support member 17.

  The rope removal prevention jig is used, for example, when replacing a rope of a machine room type rope elevator. The rope detachment prevention jig is attached to, for example, the sheave cover 9 of the weight suspension wheel 7 from which the detachment prevention 15 is removed.

  FIG. 7 is a front view of the weight suspension car in a state in which the rope detachment preventing jig in the first embodiment is attached. FIG. 8 is a side view of the weight suspension car in a state in which the rope detachment preventing jig in the first embodiment is attached. FIG. 9 is a top view of the weight suspension car in a state in which the rope detachment preventing jig in the first embodiment is attached.

  Hereinafter, with reference to FIGS. 7-9, the rope detachment prevention jig attached to the right side seeing from a front among two rope detachment prevention jigs is demonstrated. In addition, if the through hole 13 in the following description is replaced with the through hole 14, the rope detachment preventing jig attached to the left side when viewed from the front will be described.

  The first support member 16 is attached to the front cover 10, for example, in a state where the longitudinal direction of the first support member 16 is in the left-right direction of the weight suspension wheel 7. The first support member 16 is fixed to the front surface of the front cover 10 by, for example, a bolt used to fix the detent 15 via the through hole 16 b. The mounting position of the first support member 16 is adjusted so that the through hole 16 a and the through hole 13 overlap. One end of the rod-shaped member 18 is passed through the through hole 16 a and the through hole 13 of the front cover 10. The first support member 16 is pressed against the front surface of the front cover 10, for example, by tightening a nut attached to one end of the rod member 18.

  The second support member 17 is attached to the rear cover 11, for example, in a state where the longitudinal direction of the second support member 17 is in the left-right direction of the weight suspension wheel 7. The other end of the rod-like member 18 in a state of being inserted into the cylindrical member 19 is passed through the through hole 13 and the through hole 17 a of the rear cover 11. The second support member 17 is pressed against the rear surface of the rear cover 11 by, for example, tightening a nut attached to the other end of the rod-like member 18.

  The rod-like member 18 is supported by the first support member 16 and the second support member 17 in the direction along the rotation axis direction of the weight suspension wheel 7. The diameter of the cross section of the rod-like member 18 is smaller than the lateral width of the through hole 13. The through hole 16 b of the first support member 16 is formed to be horizontally long. That is, it is possible to change the position of the first support member 16 with respect to the front cover 10 in the left-right direction. For this reason, it is possible to finely adjust the position in the left-right direction of the rod-like member 18 in a state of being passed through the through hole 13 of the sheave cover 9. The position in the left-right direction of the rod-like member 18 is adjusted so that the tubular member 19 contacts all the ropes 3 simultaneously. The cylindrical member 19 is rotatable around the rod-like member 18 when the rope 3 moves in the vertical direction. In addition, if a washer etc. are attached between the edge part of the cylindrical member 19, and the sheave cover 9, for example, the cylindrical member 19 will become easy to rotate.

  The rope replacement work of the elevator is performed in a state where the rope detachment preventing jig is attached to the weight suspension car 7 as shown in FIG. 7 to FIG. During the rope replacing operation, the car 4 and the counterweight 5 are held by a device or jig (not shown) or the like so as not to load the rope. In this state, when the old rope connected at one end to the new rope is pulled toward the other end, the old rope and the new rope move along the rope grooves of each sheave. Thereby, the old rope is replaced with the new rope. Thereafter, the rope detachment prevention jig is removed from the weight suspension wheel 7, and the detachment prevention 15 is attached again.

  In the first embodiment, the rope detachment prevention jig of the elevator is, for example, a jig used at the time of rope replacement of the machine room type rope elevator. The first support member 16 is attached to, for example, the front cover 10 of the sheave. The second support member 17 is attached to, for example, the rear cover 11 of the sheave. The pressing member 20 has one end supported by the first support member 16 and the other end supported by the second support member 17, and the rotating shaft direction of the sheave with respect to the plurality of ropes 3 wound around the sheave It is fixed in the state of touching along the direction of. For this reason, it is possible to prevent the rope from coming off from the sheave at the time of rope replacement. As a result, since the rope removal work does not occur, the efficiency of the rope replacement work can be improved. In addition, the safety of workers can be enhanced.

  In the first embodiment, the first support member 16 is formed with, for example, a through hole 16a which is a round hole and a through hole 16b which is a long hole along the longitudinal direction. The pressing member 20 is supported by the first support member 16 via, for example, a round hole. The first support member 16 is fixed to the front cover 10 of the sheave via an elongated hole, for example, with the longitudinal direction along the left-right direction of the sheave. Therefore, the position of the pressing member can be finely adjusted so as to contact the rope.

  In the first embodiment, the pressing member 20 includes the rod-like member 18 and the cylindrical member 19. The rod-like member 18 has, for example, a circular cross section, and is supported by the first support member 16 and the second support member 17. The cylindrical member 19 is formed, for example, in a cylindrical shape having an inner diameter larger than the thickness of the rod-like member 18, and the rod-like member 18 is passed through inside, and a plurality of Contact the rope 3 at the same time. That is, the cylindrical member 19 is rotatable with the movement of the rope 3. Therefore, the rope can be prevented from being damaged by the friction with the pressing member.

  In the first embodiment, the cylindrical member 19 is formed of, for example, a softer material than the rope 3. Therefore, the rope can be prevented from being damaged by the friction with the pressing member.

  In the first embodiment, for example, a plurality of grooves along the rotational direction around the axis of the cylindrical member 19 are formed in a range of the outer peripheral surface of the cylindrical member 19 in contact with the plurality of ropes 3. May be These grooves may be formed, for example, at positions corresponding to the ropes 3. In this case, the friction between the pressing member and the rope can be further reduced.

  In Embodiment 1, the rope replacement method for an elevator includes, for example, a jig installation step, a rope movement step, and a jig removal step. In the jig installation process, remove the stopper 15 from the cover of the sheave provided in the hoistway of the rope room elevator without machine room type, and use the rope detachment prevention jig on the old rope wound around the sheave. It is a process of attaching in the state which contacts. The rope moving step is a step of replacing the old rope with the new rope by pulling the old rope toward the other end while the new rope is connected to one end of the old rope wound around the sheave. The jig removal step is a step of removing the rope detachment prevention jig from the cover of the sheave and attaching the detachment prevention 15. For this reason, it is possible to prevent the rope from coming off from the sheave at the time of rope replacement. As a result, since the rope removal work does not occur, the efficiency of the rope replacement work can be improved. In addition, the safety of workers can be enhanced.

  The rope detachment preventing jig in the first embodiment may be used for a sheave other than the weight suspension wheel 7. However, it is particularly effective to use it for a heavy load sheave 7 in which the rope tends to come off at the time of rope replacement.

REFERENCE SIGNS LIST 1 elevator 2 hoisting machine 3 rope 4 car 5 balance weight 6 car suspension car 7 weight hanging car 8 return car 9 sheave cover 10 front cover 11 back cover 12 rear cover 12 rotation shaft 13 through hole 14 through hole 16 first support member 16a through hole 16b through hole 17 second support member 17a through hole 18 rod member 19 cylindrical member 20 pressing member

Claims (5)

A first support member attached to the front cover of the sheave;
A second support member attached to a rear cover of the sheave;
A pressing member having a rod- like member and a cylindrically formed cylindrical member having an inner diameter larger than the thickness of the rod-like member ;
Equipped with
The rod-like member is inserted into the tubular member, and the tubular member contacts the rope wound on the sheave between the front cover and the rear cover, and one end is rotatable. A rope detachment preventing jig for an elevator supported by the first support member and fixed in a state where the other end portion is supported by the second support member . The first support member is formed with a circular hole and an elongated hole along the longitudinal direction,
The rod-like member is supported by the first support member via the round hole,
2. The rope release prevention lever according to claim 1, wherein the first support member is fixed to the front cover of the sheave via the elongated hole in a state where the longitudinal direction is along the left-right direction of the sheave. Equipment. The rope detachment preventing jig for an elevator according to claim 1 or 2 , wherein the cylindrical member is formed of a material softer than a rope. The rope removal prevention elevator according to any one of claims 1 to 3 , wherein a groove is formed on an outer peripheral surface of the cylindrical member along a rotation direction about an axis of the cylindrical member. Equipment. A jig installation process for removing the locking device from the sheave cover provided in the hoistway and attaching the rope separation prevention jig according to any one of claims 1 to 4 ;
A rope moving step of replacing the old rope with the new rope by pulling the old rope toward the other end while the new rope is connected to one end of the old rope wound around the sheave;
A jig removing step of removing the rope detachment preventing jig from the cover of the sheave and attaching the detachment prevention;
How to replace the rope in the elevator with.

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