JP2012106859A - Main rope entanglement preventing jig of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a main rope entanglement preventing jig of an elevator which is easily mounted on a main rope from a machine room, securely prevents entanglement of a main rope to be hung and an existing main rope, and achieves efficient replacement work of the main rope.SOLUTION: Three rope guides 2, which are mounted on the two main ropes stretched in a tensioned state and the main rope for replacement to be hung, are connected and integrated by a connection member 10 in a state that the rope guides 2 are positioned at apexes of a triangle. The rope guide 2 includes: a sliding body 3 which is manufactured in a cylindrical body of a notched circular shape having a slit 4 in which the main rope is put in and out, is mounted on the main rope through the slit 4, and is structured so as to move in an extending direction of the main rope; and a nut member 8 which is screwed in a male screw part 5 formed on an outer circumferential surface of the sliding body 3 and opens and closes the slit of the sliding body 3.

Description

  The present invention relates to a main rope entanglement preventing jig for preventing entanglement of a main rope during replacement work of an elevator main rope.

  Conventional elevator main rope entanglement jigs are guided by a guide rail extending vertically on the side wall of the hoistway and are attached to the guide rail so as to be movable in the vertical direction, and a main rope suspended And a connecting portion that connects the guide portion and the rope guide (see, for example, Patent Document 1).

  When the main rope is replaced, the car is first stopped at a position where the upper part of the car almost coincides with the floor of the top floor platform, and a new main rope is sent from the top floor platform to the top of the car. And after winding the sent main rope around the car suspension car, it is sent to the machine room. Next, the main rope sent to the machine room is wound around the driving sheave and the deflecting wheel, and a rope shackle is attached to the tip of the main rope and lowered into the hoistway. Therefore, the worker attaches the guide portion to the guide rail from the upper part of the car, and further attaches the rope guide to the lowered main rope. Thereafter, the worker moves to the machine room and lowers the main rope from the machine room.

Japanese Patent Laid-Open No. 09-100078

  When replacing the main rope using a conventional elevator main rope entanglement jig, it is necessary for the operator to ride on the upper part of the car stopped near the top floor and attach the guide part to the guide rail. there were. However, since the guide rail is extended on the side wall of the hoistway, the guide rail is away from the car and there is a problem that work efficiency decreases.

  The present invention has been made to solve the above problems, and can be easily attached to the main rope in the machine room, and can reliably prevent the main rope to be lowered from being entangled with the existing main rope. It is an object of the present invention to obtain an elevator main rope entanglement jig capable of efficiently performing replacement work.

  The main rope entanglement preventing jig of the elevator according to the present invention includes two rope guides attached to two main ropes that are stretched and a replacement main rope that is suspended, and three rope guides. A connecting member that connects and integrates the rope guide so as to be positioned at the apex of the triangle, and the rope guide is made into a circular cylindrical body having a slit through which the main rope can enter and exit, A sliding body mounted on the main rope through the slit and configured to be movable in the extending direction of the main rope; and slit opening / closing means for opening and closing the slit of the sliding body.

In the present invention, since the three rope guides are integrated by the connecting member in a state of being located at the apex of the triangle, the rope guide attached to the main rope is swung from the winding rod of the replacement main rope. The acting force is received by the two main ropes stretched through the connecting member and the remaining two rope guides. As a result, the swing of the rope guide attached to the replacement main rope due to the curl can be suppressed, so that the replacement main rope can be lowered straight and entangled with the stretched main rope. It is avoided and the replacement work of the main rope can be performed efficiently.
Moreover, since the main rope entanglement preventing jig can be attached to the replacement main rope and the main rope stretched in the machine room, the replacement work of the main rope is improved.

It is a perspective view which shows the main rope entanglement prevention jig | tool of the elevator which concerns on one embodiment of this invention. It is a top view which shows the main rope entanglement prevention jig | tool of the elevator which concerns on one embodiment of this invention. It is a figure explaining the replacement | exchange method of the main rope using the main rope entanglement prevention jig by this invention. It is a perspective view explaining the state which equipped the main rope with the main rope entanglement prevention jig by this invention. It is a cross-sectional view explaining the state which mounted | wore the main rope with the main rope entanglement prevention jig by this invention.

  FIG. 1 is a perspective view showing an elevator main rope entanglement preventing jig according to an embodiment of the present invention, and FIG. 2 is a top view showing an elevator main rope entanglement preventing jig according to an embodiment of the present invention. is there.

  1 and 2, the main rope entanglement preventing jig 1 includes three rope guides 2 arranged so as to be located at the apex of a triangle, a connecting member 10 that connects the three rope guides 2, and a rope guide. 2 and a detachment prevention hook 11 attached to the rim 2.

  The rope guide 2 is formed in a circular shape having a slit 4 in which a part of the peripheral wall of the cylindrical body is cut out in the axial direction, and a sliding body 3 in which a male screw portion 5 is formed on the outer peripheral surface, and an annular nut In a state in which a part of the peripheral wall of the sliding body 3 is formed in a notch shape having a slit 7 cut out in the axial direction, and is screwed into the male screw portion 5 of the sliding body 3 so that the slit 7 is aligned with the slit 4 of the sliding body 3. A stopper 6 fixed to the sliding body 3 by welding or the like and a slit 9 in which a part of the peripheral wall of the annular nut is cut out in the axial direction are formed in a circular shape, and are screwed into the male screw portion 5 of the sliding body 3. And a nut member 8 that closes the slit 4 of the sliding body 3 in contact with the stopper 6.

  The slits 4, 7, and 9 have a width that allows a main rope 27 described later to enter and exit. Moreover, the external thread part 5 and the nut member 8 which were formed in the outer peripheral surface of the sliding body 3 comprise a slit opening / closing means. Further, the rope guide 2 is mounted so as to surround the main rope 27 of the elevator and moves in the extending direction of the main rope 27 while being in contact with the main rope 27. Therefore, in consideration of wear resistance, a metal such as stainless steel is used. It is preferable to make it with a material.

The three nut members 8 are arranged at the vertices of a triangle on the same plane orthogonal to the axis of the nut member 8 with the axes parallel to each other and the slit 9 facing the outside of the triangle. ing. Then, the sliding body 3 is screwed into each nut member 8 to constitute the main rope entanglement jig 1. Here, the connecting member 10 only needs to have a rigidity capable of integrating the nut member 8 of the rope guide 2 and receiving a force acting on the rope guide 2 by the winding rod of the main rope 27, and the material is particularly limited. Not.
The detachment prevention hook 11 is configured by fixing the hook portion 12 to one end of the string 13, and the other end of the string 13 is fixed to the nut member 8 of the rope guide 2.

  Next, a method for replacing the main rope using the main rope entanglement jig 1 will be described with reference to FIGS. FIG. 3 is a diagram for explaining a main rope replacement method using the main rope entanglement preventing jig according to the present invention, FIG. 4 is a perspective view for explaining a state in which the main rope entanglement preventing jig according to the present invention is attached to the main rope, FIG. 5 is a cross-sectional view for explaining a state in which the main rope entanglement preventing jig according to the present invention is mounted on the main rope.

  As shown in FIG. 3, the elevator includes a hoistway 21, a machine room 22 provided in the upper part of the hoistway 21, and a car guide rail (not shown) that extends vertically on the side wall of the hoistway 21. 1) and a guide 23 (not shown) for a counterweight that extends in the vertical direction on the side wall of the hoistway 21. A counterweight 24 disposed in the hoistway 21 so as to be able to move up and down, a driving sheave 25 and a baffle 26 installed in the machine room 22 are wound around the hoistway 21 and the car 23 is connected to one end. And a main rope 27 having a counterweight 24 fixed to the other end. Here, the car 23 and the counterweight 24 are connected by a plurality of main ropes 27.

First, the car 23 is stopped at a position where the upper portion thereof substantially coincides with the top floor. The counterweight 24 is located in the pit 21 a of the hoistway 21 and is placed on the square member 28. Therefore, one existing main rope 27 is removed.
Next, a new main rope 27 wound in a coil shape is carried to the top floor. Then, a new main rope 27 for replacement is sent from the top floor onto the car 23 and further sent from above the car 23 to the machine room 22. In the machine room 22, the replacement main rope 27 is wound around the driving sheave 25 and the deflecting wheel 26, and then a rope shackle 29 is attached to the tip thereof.

  Subsequently, each sliding body 3 is rotated so that the slit 4 is aligned with the slit 9 of the nut member 8. Then, each of the existing main ropes 27 stretched is introduced into the sliding body 3 through the slits 4 and 9, and the sliding body 3 is turned until the stopper 6 comes into contact with the nut member 8. Secure to. In this manner, the rope guide 2 is attached to each of the two main ropes 27 stretched. Next, the leading end side of the replacement main rope 27 is introduced into the sliding body 3 through the slits 4 and 9, and the sliding body 3 is rotated until the stopper 6 contacts the nut member 8 to fix the sliding body 3 and the nut member 8. To do. In this way, as shown in FIGS. 4 and 5, the rope guide 2 is attached to the replacement main rope 27 that is suspended. Further, the hook portion 12 is attached to the rope shackle 29.

  Next, when the replacement main rope 27 is lowered from the machine room 22 into the hoistway 21, the rope guide 2 hits the rope shackle 29 and the main rope entanglement preventing jig 1 is held at the tip of the replacement main rope 27. . Therefore, the replacement main rope 27 is lowered to the position of the counterweight 24 while sending out the replacement main rope 27 from the top floor. At this time, the sliding bodies 3 of the two rope guides 2 descend while sliding on the stretched main rope 27, and the main rope entanglement preventing jig 1 descends while maintaining a substantially horizontal state.

When the replacement main rope 27 is lowered to the position of the counterweight 24, the hook portion 12 is removed from the rope shackle 29, and the sliding bodies 3 are turned to bring the slits 4 and 9 into alignment with each other. 27 and the main rope 27 for replacement are removed from the main rope 27 for replacement. Then, the rope shackle 29 is attached to the counterweight 24.
Next, on the top floor, the length of the replacement main rope 27 is confirmed and cut, the rope shackle 29 is attached to the cut end, attached to the car 24, and the replacement work for one main rope 27 is completed. .

  Similarly, the remaining existing main rope 27 is replaced with a replacement main rope 27, and the replacement work of the main rope 27 is completed. Here, the two rope guides 2 are attached to any two extended main ropes 27 from the existing main rope 27 and the replaced main rope 27.

  In general, the curl remains on the replacement main rope 27, and when the replacement main rope 27 is lowered, the rope guide 2 mounted on the replacement main rope 27 acts to swing. At this time, when the number of the rope guides 2 is one, the rope guide 2 attached to the replacement main rope 27 swings, and the replacement main rope 27 does not descend straight and is stretched. I get tangled in. When there are two rope guides 2, the rope guide 2 attached to the replacement main rope 27 rotates around the rope guide 2 attached to the main rope 27 that is stretched, The main rope 27 is entangled. Unraveling the entanglement of the main rope 27 requires a lot of time and labor, and the workability of replacing the main rope 27 is deteriorated. Further, the swing of the rope guide 2 induces contact with the equipment installed in the hoistway 21 and leads to damage to the equipment and the main rope 27.

  According to the present invention, the three rope guides 2 are connected and integrated by the connecting member 10 in a state of being positioned at the apex of the triangle. Therefore, the force of swinging the rope guide 2 attached to the replacement main rope 27 by the winding rod is applied to the two main ropes 27 that are stretched via the connecting member 10 and the other two rope guides 2. Therefore, the swing and rotation of the rope guide 2 mounted on the replacement main rope 27 are prevented. Thereby, the situation where the main rope 27 for replacement falls straight and gets entangled with the main rope 27 stretched is avoided, and the main rope 27 can be replaced efficiently. Further, since the rope guide 2 does not swing, contact with the equipment installed in the hoistway 21 is avoided, and damage to the equipment and the main rope 27 can be suppressed.

  The rope guide 2 is formed in a circular shape having a slit 4 in which a part of the peripheral wall of the cylindrical body is cut out in the axial direction, and the sliding body 3 in which the male screw portion 5 is formed on the outer peripheral surface, and an annular nut The main rope is entangled with a nut member 8 which is formed in a notch shape having a slit 9 in which a part of the peripheral wall of the sliding body 3 is cut out in the axial direction and is screwed into the male screw portion 5 of the sliding body The prevention jig 1 can be manufactured with a simple configuration, and the cost can be reduced.

  A stopper 6 formed in a notch shape having a slit 7 in which a part of the circumferential wall of an annular nut is cut out in the axial direction is screwed into the male screw portion 5 of the sliding body 3, and the slit 7 is inserted into the sliding body 3. It is fixed to the sliding body 3 in a state where it is aligned with the slit 4. The nut member 8 screwed to the male screw portion 5 is configured to close the slit 4 of the sliding body 3 in a state where the nut member 8 is in contact with the stopper 6. Therefore, the rope guide 2 can be reliably prevented from coming off from the main rope 27 only by turning the nut member 8 screwed to the male screw portion 5 until it comes into contact with the stopper 6.

  Since the detachment prevention hook 11 locked to the rope shackle 29 is attached to the rope guide 2, the main rope entanglement preventing jig 1 can be reliably prevented from dropping during the workability of replacing the main rope 27.

  Here, the slit opening / closing means is constituted by the male screw portion 5 and the nut member 8 formed on the outer peripheral surface of the sliding body 3, but the slit opening / closing means is not limited to this configuration. The slit opening / closing means may be configured so that the slit of the sliding body can be opened and closed. For example, a door that opens and closes the slit is pivotally attached to the outer peripheral surface of the sliding body via a hinge, and the lock that holds the closed door is held. A mechanism may be added.

Further, the detachment prevention hook 11 attached to the rope guide 2 is assumed to be attached to the nut member 8 of the rope guide 2, but the rope guide 2 attached to the replacement main rope 27 is composed of three rope guides 2. Since either may be sufficient, it is preferable to attach the detachment prevention hook 11 to the connecting member 10.
Moreover, although the connection member 10 shall connect the three nut members 8, the connection member 10 may connect the three sliding bodies 3. FIG.

Further, the three rope guides 2 are arranged so as to be positioned at the apex of the triangle, but the distance between the axes of the rope guide 2 can be made to coincide with the distance between the axes of the existing main rope 27. preferable. In this case, the rope guide 2 can be smoothly lowered along the main rope 27 on which the rope guide 2 is stretched, and the replacement main rope 27 can be lowered stably.
In addition, a 1: 1 roping type elevator in which the main rope 27 is wound around the driving sheave 25 and the deflecting wheel 26 to support the car 23 and the counterweight 24 in a slidable manner has been described. Even when applied to other roping type elevators, the same effects can be obtained.

  DESCRIPTION OF SYMBOLS 1 Main rope entanglement prevention jig, 2 Rope guide, 3 Slider, 4 Slit, 5 Male thread part (Slit opening / closing means), 8 Nut member (Slit opening / closing means), 10 Connecting member, 11 Detachment prevention hook, 27 Main rope, 29 Rope shackle.

Claims (3)

An elevator main rope entanglement prevention jig used when replacing a plurality of main ropes of an elevator,
Three rope guides attached to two main ropes that are stretched and a replacement main rope that is suspended;
A connecting member that connects and integrates the rope guides so that the three rope guides are located at the apexes of the triangle,
The rope guide is manufactured in a cylindrical shape having a circular shape having a slit through which the main rope can go in and out, is attached to the main rope through the slit, and is configured to be movable in the extending direction of the main rope. A main rope entanglement preventing jig for an elevator, comprising: a sliding body; and slit opening / closing means for opening and closing the slit of the sliding body.   The slit opening / closing means includes a male screw portion formed on the outer peripheral surface of the sliding body, and a non-circular nut member that is screwed to the male screw portion and attached to the sliding body. The main rope entanglement preventing jig for an elevator according to claim 1.   3. A detachment prevention hook, which is locked to a rope shackle attached to the tip of the replacement main rope to be hung down, is attached to the rope guide or the connecting member. The elevator main rope entanglement prevention jig of description.

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