WO2011052057A1

WO2011052057A1 - Main-rope fastening device for elevator

Info

Publication number: WO2011052057A1
Application number: PCT/JP2009/068597
Authority: WO
Inventors: 肥田　政彦; 光井　厚
Original assignee: 三菱電機株式会社
Priority date: 2009-10-29
Filing date: 2009-10-29
Publication date: 2011-05-05
Also published as: CN102596784A; CN102596784B; JPWO2011052057A1; KR101363191B1; KR20120041244A; EP2495207A4; EP2495207A1

Abstract

A main-rope for suspending an ascending/descending body is connected to a socket. At least either a ridge or a groove is provided as a socket-side engaging section on the outer periphery of the socket. The outer periphery of the socket is covered with an elastic covering body. A covering body-side engaging section engaging with the socket-side engaging section with the elastic covering body covering the outer periphery of the socket is formed on the inner periphery of the elastic covering body.

Description

Elevator main rope fixing device

The present invention relates to an elevator main rope fixing device having a socket to which a main rope for suspending a lifting body (for example, a car or a counterweight) is connected and attached to a lifting member, a fixing member in a hoistway or the like. is there.

Conventionally, an elevator apparatus is known in which a plurality of main clasps are mounted side by side on top of a car, and the car is suspended by a plurality of main ropes individually connected to each main clasp. Each main rope stopper has a socket to which the end of the main rope is connected. Each main clasp is attached to the car via a spring. Therefore, in the conventional elevator apparatus, when the car is moved up and down, there is a possibility that noise is generated due to the inclination of each main clasp metal fitting and the sockets contacting each other.

Conventionally, in order to prevent noise due to contact between sockets, an elevator rope device in which an elastic block having a dimension larger than the width of the socket is attached to each main rope has been proposed. The elastic block is disposed in the vicinity of the main clasp. When each main clasp is tilted, the elastic blocks come into contact with each other first to prevent contact between the sockets (see Patent Document 1).

Also, conventionally, an elevator rope device in which the outer peripheral surface of all sockets is coated with an elastic material made of rubber or the like has been proposed in order to prevent noise due to contact between the sockets (see Patent Document 1).

JP 2006-143435 A

However, in a conventional elevator rope device in which an elastic block is attached to each main rope, a mounting tool (for example, a bolt or the like) is required to attach the elastic block to the main rope. At the same time, the cost also increases.

In addition, in the conventional elevator rope device in which the outer peripheral surface of all the sockets is coated with an elastic material, the elastic material is displaced and the elastic material is dropped from the socket by repeatedly contacting the non-slip elastic materials. There is a fear.

The present invention has been made to solve the above-described problems, and can prevent noise caused by contact between sockets and can reduce costs, and an elastic covering from the socket. It is an object of the present invention to provide an elevator main rope fixing device that can more reliably prevent falling off.

An elevator main rope fixing device according to the present invention includes a socket to which a main rope for suspending a lifting body is connected, and at least one of a convex portion and a concave portion provided on an outer peripheral portion as a socket-side fitting portion, and an outer peripheral portion of the socket The cover body side fitting part fitted in the socket side fitting part in the state which coat | covered the outer peripheral part of the socket is provided in the inner peripheral part.

In the elevator main rope fixing device according to the present invention, the socket side fitting portion is formed on the outer peripheral portion of the socket, and the cover side that fits into the socket side fitting portion in a state where the elastic covering body covers the outer peripheral portion of the socket Since the fitting portion is formed on the inner peripheral portion of the elastic cover, contact between adjacent sockets can be prevented by the elastic cover, and generation of noise due to contact between the sockets can be prevented. Moreover, even if the elastic covering bodies attached to the adjacent sockets contact each other, the displacement of the elastic covering body with respect to the socket can be stopped by the socket-side fitting portion, and the position of the elastic covering body with respect to the socket is hardly displaced. be able to. As a result, it is possible to more reliably prevent the elastic covering from falling off the socket. Furthermore, since a fixture for attaching the elastic covering body to the socket is not required, the cost can be reduced.

It is a block diagram which shows the elevator by Embodiment 1 of this invention. It is a principal part front view which shows the 1st main rope fixing apparatus of FIG. It is a side view which shows the 1st main rope fixing apparatus of FIG. FIG. 4 is an enlarged view showing the socket of FIG. 3. It is a front view which shows a state when the elastic coating body of the main rope fixing apparatus of the elevator by Embodiment 2 of this invention has remove | deviated from the socket. It is a side view which shows the socket and elastic coating body of the main rope fixing apparatus of the elevator by Embodiment 3 of this invention. It is a front view which shows a state when the elastic coating body of FIG. 6 has removed from the socket. It is a principal part front view which shows the main rope fixing apparatus of the elevator by Embodiment 3 of this invention.

Preferred embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a block diagram showing an elevator according to Embodiment 1 of the present invention. In the figure, a car (elevating body) 2 and a counterweight (elevating body) 3 are provided in a hoistway 1 so as to be able to be raised and lowered. In the hoistway 1, a hoisting machine (driving device) 4 that generates a driving force for raising and lowering the car 2 and the counterweight 3 is installed.

The hoisting machine 4 has a hoisting machine main body (drive device main body) 5 including a motor and a drive sheave 6 rotated by the hoisting machine main body 5. A plurality of main ropes 7 are wound around the drive sheave 6. The car 2 and the counterweight 3 are suspended by the main ropes 7.

A pair of car suspension cars 8 is provided at the bottom of the car 2, and a counterweight suspension car 9 is provided at the top of the counterweight 3. A fixed beam 10 arranged horizontally is fixed to the upper part in the hoistway 1. A car-side return wheel 11, a counterweight-side return wheel 12, and a pair of main

rope fixing devices

13 and 14 are attached to the fixed beam 10.

Each of the main

rope fixing devices

13 and 14 includes a plurality of metal sockets 15 to which the main ropes 7 are individually connected, and through holes provided in the fixed beam 10 to which the sockets 15 are individually attached. A plurality of metal rods 16 that are passed through, and a plurality of springs that are contracted between the fixed beam 10 and a spring receiving portion 16a provided at an end (upper end) of the rod 16 and receive a force from the main rope 7 (Elastic body) 17.

One end of each main rope 7 is individually connected to each socket 15 of one main rope fixing device 13. The other end of each main rope 7 is individually connected to each socket 15 of the other main rope fixing device 14. Each main rope 7 is wound from one main rope fixing device 13 in the order of each car suspension wheel 8, car side return wheel 11, drive sheave 6, counterweight side return wheel 12, and counterweight suspension wheel 9. The other main rope fixing device 14 is reached. That is, the hanging method of the car 2 and the counterweight 3 is a 2: 1 roping method. The car 2 and the counterweight 3 are moved up and down in the hoistway 1 by rotating the drive sheave 6.

FIG. 2 is a main part front view showing the main rope fixing device 13 of FIG. FIG. 3 is a side view showing the main rope fixing device 13 of FIG. The configuration of the main rope fixing device 14 is the same as that of the main rope fixing device 13. In the figure, the rods 16 are arranged at intervals. Accordingly, the sockets 15 are also arranged at intervals from each other according to the interval between the rods 16. Since each rod 16 is supported by the spring 17, when the car 2 and the counterweight 3 are raised and lowered, the distance between the sockets 15 may be inclined in a changing direction.

The radial cross-sectional area of the socket 15 (the area in the cross section perpendicular to the central axis A of the rod 16 (FIG. 3)) is the largest at the middle part of the socket 15. Therefore, the radial top portion 15 a that is the portion farthest from the central axis A of the rod 16 in the outer peripheral portion of the socket 15 is located in the middle portion of the socket 15. The socket 15 is provided with a main rope passage hole 18 through which the main rope 7 is passed. The main rope-through hole 18 is provided at a position closer to the rod 16 than the main rope-side opening 18a located at the tip of the socket 15 (the end of the socket 15 away from the rod 16) and the radial top 15a. Rod side opening 18b. The radial cross-sectional area of the main rope-through hole 18 is the smallest at the tip of the socket 15 and continuously increases as the rod 16 is approached.

A wedge 19 is inserted into the main rope-through hole 18 from the rod side opening 18b. The main rope 7 is reversed by being wound around the outer periphery of the wedge 19. The portion of the main rope 7 wound around the wedge 19 is drawn into the main rope passage hole 18 together with the wedge 19, so that the main rope 7 is caught between the inner surface of the main rope passage hole 18 and the wedge 19. The main rope 7 is connected to the socket 15 in a state of being bitten between the inner surface of the main rope passage hole 18 and the wedge 19.

FIG. 4 is an enlarged view showing the socket 15 of FIG. In the figure, a convex portion 20 protruding outward in the radial direction of the socket 15 is formed on the outer peripheral portion of the socket 15 as a socket-side fitting portion. The convex portion 20 surrounds the socket 15 along the circumferential direction of the socket 15 and is arranged in an annular shape. Further, the convex portion 20 is disposed at a position between the intermediate portion and the tip portion of the socket 15. Furthermore, the distance D1 from the central axis A of the rod 16 to the protruding end of the convex portion 20 is made smaller than the distance D2 from the central axis A of the rod 16 to the radial top portion 15a of the socket 15.

The outer peripheral portion of the socket 15 is covered with the convex portion 20 by a tubular elastic covering body 21 made of a stretchable elastic material (for example, rubber which is a polymer material). Of the outer peripheral portion of the socket 15, the portion covered by the elastic covering body 21 is a portion where the sockets 15 are likely to contact each other when the rod 16 is tilted. In this example, the elastic covering body 21 covers the portion from the intermediate portion of the socket 15 including the radial top portion 15 a to the tip portion of the socket 15 in the outer peripheral portion of the socket 15.

The elastic covering 21 is attached to the outer peripheral portion of the socket 15 in a state of being elastically expanded by the socket 15. That is, the elastic covering 21 generates an elastic restoring force in the direction in which the socket 15 is tightened, and is held on the outer peripheral portion of the socket 15 by this elastic restoring force.

The inner peripheral portion of the elastic cover 21 is elastically deformed by the elastic cover 21 being spread by the socket 15. Therefore, in a state where the elastic cover 21 covers the outer peripheral portion of the socket 15, the elastic cover 21 is elastically deformed along the shape of the convex portion 20, so that the concave portion 22 fitted into the convex portion 20 is formed on the cover side. It is formed in the inner peripheral part of the elastic covering 21 as a fitting part.

Next, the procedure for attaching the elastic covering 21 to the socket 15 will be described. The elastic covering 21 is attached to the socket 15 before connecting the main rope 7 to the socket 15. When attaching the elastic cover 21 to the socket 15, first, the socket 15 is inserted into the elastic cover 21 while expanding the opening of the elastic cover 21 against the elastic restoring force of the elastic cover 21. Thereafter, the opening of the elastic cover 21 is contracted, and the elastic cover 21 is elastically contracted. As a result, the outer peripheral portion of the socket 15 is covered with the elastic cover 21. At this time, a concave portion 22 formed along the shape of the convex portion 20 is generated in the inner peripheral portion of the elastic covering member 21 due to elastic deformation of the elastic covering member 21.

The connection of the main rope 7 to the socket 15 is performed after the socket 15 is covered with the elastic covering 21. In addition, the operation | work which attaches the elastic coating | cover 21 to the socket 15 may be performed in a manufacturing factory, and may be performed in the installation site of an elevator.

In such an elevator main rope fixing device, the convex portion (socket-side fitting portion) 20 is formed on the outer peripheral portion of the socket 15, and the elastic covering body 21 covers the outer peripheral portion of the socket 15. Since the concave portion (covering body side fitting portion) 22 that fits into the portion 20 is formed on the inner peripheral portion of the elastic covering member 21, the contact between the adjacent sockets 15 can be prevented by the elastic covering member 21. Generation of noise due to mutual contact can be prevented. Further, even when the elastic covering bodies 21 attached to the adjacent sockets 15 come into contact with each other, the displacement of the elastic covering body 21 with respect to the socket 15 can be stopped by the convex portion 20, and the position of the elastic covering body 21 with respect to the socket 15 can be stopped. Can be made difficult to shift. Thereby, it is possible to more reliably prevent the elastic covering body 21 from falling off the socket 15. Furthermore, since a fixture for attaching the elastic covering 21 to the socket 15 is not necessary, the cost can be reduced. Furthermore, the installation space for the elastic covering 21 can be remarkably reduced, and the main rope fixing device as a whole can be reduced in size.

Further, since the elastic covering member 21 generates an elastic restoring force in the direction in which the socket 15 is tightened and is held on the outer peripheral portion of the socket 15 by this elastic restoring force, the elastic covering member 21 is more surely removed from the socket 15. Can be prevented.

In the above example, the convex portion 20 is formed on the outer peripheral portion of the socket 15 as the socket-side fitting portion, and the concave portion 22 fitted into the convex portion 20 is generated on the inner peripheral portion of the elastic covering member 21 as the covering-side fitting portion. However, the concave portion is formed on the outer peripheral portion of the socket 15 as a socket-side fitting portion, and the convex portion that fits into the concave portion is used as the covering-side fitting portion by the elastic deformation of the elastic covering member 21. You may make it arise in a surrounding part.

In the above example, only a part of the outer peripheral portion of the socket 15 is covered with the elastic cover 21, but the entire outer peripheral portion of the socket 15 may be covered with the elastic cover 21.

Embodiment 2. FIG.
In the first embodiment, the elastic cover 21 is elastically deformed along the shape of the convex part 20, so that the concave part 22 that fits into the convex part 20 is generated in the inner peripheral part of the elastic cover 21. A concave portion that fits into the convex portion 20 may be formed in advance on the inner peripheral portion of the elastic covering member 21.

That is, FIG. 5 is a front view showing a state before the outer peripheral portion of the socket 15 of the main rope fixing device for an elevator according to the second embodiment of the present invention is covered with the elastic covering 21. In the figure, a concave portion 31 that fits into the convex portion 20 is formed in advance on the inner peripheral portion of the elastic covering member 21 as a covering portion-side fitting portion by processing the elastic covering member 21. In addition, the inner peripheral portion of the elastic cover 21 is formed in advance according to the shape of the outer peripheral portion of the socket 15. That is, the inner peripheral portion of the elastic covering 21 is processed in advance into a shape that fits into each of the outer peripheral portion of the socket 15 and the convex portion 20.

The elastic covering 21 is attached to the socket 15 by fitting the concave portion 31 to the convex portion 20, and is detached from the socket 15 by removing the concave portion 31 from the convex portion 20. That is, the elastic cover 21 is detachable from the socket 15. Other configurations are the same as those in the first embodiment.

Thus, since the recessed part 31 which fits into the convex part 20 is previously formed in the inner peripheral part of the elastic coating | covering body 21, by fitting the recessed part 31 in the convex part 20, the elastic covering body 21 is made into the suitable position of the socket 15. FIG. Can be easily attached to.

In the above example, the convex portion 20 is formed on the outer peripheral portion of the socket 15 as the socket-side fitting portion, and the concave portion 31 fitted into the convex portion 20 is previously formed on the inner peripheral portion of the elastic covering member 21 as the covering-side fitting portion. Although it is formed, a concave portion is formed on the outer peripheral portion of the socket 15 as a socket side fitting portion, and a convex portion that fits into the concave portion is formed in advance on the inner peripheral portion of the elastic covering member 21 as a covering side fitting portion. Also good.

Embodiment 3 FIG.
FIG. 6 is a side view showing a socket and an elastic covering of an elevator main rope fixing apparatus according to Embodiment 3 of the present invention. In the figure, a protrusion 41 protruding outward in the radial direction of the socket 15 is formed as a restricting portion at the tip of the socket 15. The convex portion 41 surrounds the socket 15 along the circumferential direction of the socket 15 and is arranged in an annular shape.

The elastic covering 21 covers a portion of the outer peripheral portion of the socket 15 from the intermediate portion including the radial top portion 15a to the front of the tip portion. That is, the elastic covering 21 covers the outer peripheral portion of the socket 15 while avoiding the convex portion 41, and the convex portion 41 is exposed.

The convex portion 41 receives the elastic covering 21 in the longitudinal direction of the socket 15 (the direction along the central axis A of the rod 16). Thereby, the displacement of the elastic covering body 21 in the direction away from the socket 15 is regulated by the convex portion 41. Other configurations are the same as those in the first embodiment.

FIG. 7 is a front view showing a state before the outer peripheral portion of the socket 15 of FIG. As shown in the drawing, the inner peripheral portion of the elastic covering 21 is processed in advance according to the shape of the outer peripheral portion of the socket 15. When attaching the elastic cover 21 to the socket 15, the socket 15 is inserted into the elastic cover 21 from the tip end side while elastically deforming the elastic cover 21. The socket 15 is inserted into the elastic cover 21 until the convex portion 41 is exposed.

In such an elevator main rope fixing device, the convex portion 41 is formed on the outer peripheral portion of the socket 15, and the elastic cover 21 covers the outer peripheral portion of the socket 15 while avoiding the convex portion 41, and in a direction away from the socket 15. Since the displacement of the elastic covering body 21 is regulated by the convex portion 41, it is possible to more reliably prevent the elastic covering body 21 from falling off the socket 15. Moreover, the installation space of the elastic covering 21 can be reduced, and the main

rope fixing devices

13 and 14 as a whole can be reduced in size. Furthermore, since a fixture for attaching the elastic covering body 21 to the socket 15 is unnecessary, the cost can be reduced.

In the above example, the inner peripheral portion of the elastic covering 21 is processed in advance according to the shape of the outer peripheral portion of the socket 15, but the inner peripheral portion of the elastic covering 21 is caused by elastic deformation of the elastic covering 21. The shape may be a shape along the outer periphery of the socket 15. If it does in this way, the elastic restoring force in the direction which tightens socket 15 can be generated in elastic covering 21, and elastic covering 21 can be made harder to shift to socket 15.

Embodiment 4 FIG.
In each of the above-described embodiments, the elastic cover 21 is attached to all the sockets 15, but it is sufficient that the elastic cover 21 is interposed between the sockets 15. The elastic cover 21 may be attached only to the socket 15.

That is, FIG. 8 is a main part front view showing an elevator main rope fixing apparatus according to Embodiment 4 of the present invention. In the figure, the sockets 15 are arranged at intervals. The elastic covering body 21 is provided only in any one of the sockets 15 adjacent to each other. In this example, the elastic covering body 21 is provided only in the socket 15 located in the center among the three sockets 15. Accordingly, the outer peripheral portions of the two sockets 15 located on both sides are all exposed. Other configurations are the same as those in the first embodiment.

In such an elevator main rope fixing device, since the elastic covering member 21 is provided only in one of the adjacent sockets 15, noise due to contact between the sockets 15 can be prevented. Even if the rod 16 is tilted, the resin-made elastic covering body 21 and the metal socket 15 are in contact with each other. Therefore, the friction force received by the elastic covering body 21 is more than the friction force caused by the contact between the elastic covering bodies 21. Also, a low frictional force can be obtained. Thereby, it is possible to make the elastic covering body 21 difficult to shift with respect to the socket 15, and it is possible to more surely prevent the elastic covering body 21 from dropping from the socket 15. Furthermore, since it is not necessary to attach the elastic covering body 21 to all the sockets 15, it is possible to reduce the cost and to reduce the size of the main rope fixing device.

In the above example, the convex portion 20 is provided on the outer peripheral portion of the socket 15 as the socket-side fitting portion, but the convex portion 20 may not be provided. Even if it does in this way, since the frictional force by the contact of the elastic covering body 21 and the socket 15 becomes smaller than the frictional force by the contact of the elastic covering bodies 21, the elastic covering body 21 is not easily displaced with respect to the socket 15. Further, it is possible to more surely prevent the elastic covering body 21 from dropping from the socket 15.

In the above example, the configurations of the socket 15 and the elastic cover 21 are the same as those in the first embodiment, but the configurations of the socket 15 and the elastic cover 21 are the same as those in the second or third embodiment. It is good also as a structure.

In each of the above embodiments, the elastic cover 21 is elastically deformed to provide the elastic cover 21 on the outer peripheral portion of the socket 15. However, the elastic cover 21 is formed by injection molding on the outer peripheral portion of the socket 15. May be provided. In this case, the material constituting the elastic covering 21 is a thermoplastic resin. In the injection molding, the socket 15 is inserted into the mold, and after the liquid resin is injected into the space between the outer periphery of the socket 15 and the inner periphery of the mold, the resin solidified by cooling is elastic. Formed as a covering 21. Even in this case, the outer peripheral portion of the socket 15 can be easily covered with the elastic cover 21.

Further, in each of the above embodiments, the elastic cover 21 is elastically deformed to provide the elastic cover 21 on the outer peripheral portion of the socket 15. However, the material constituting the elastic cover 21 receives heat. Therefore, the elastic covering member 21 may be attached to the outer peripheral portion of the socket 15 by heat shrinkage. Even if it does in this way, the elastic coating body 21 can be attached to the outer peripheral part of the socket 15 only by applying heat to the elastic coating body 21, and the operation | work which coat | covers the outer peripheral part of the socket 15 with the elastic coating body 21 is made easy. be able to.

In each of the above embodiments, the elastic covering 21 may be made of a transparent material. In this way, it is possible to perform a visual inspection for the presence or absence of an abnormality (for example, a crack or the like) of the socket 15 with the elastic covering member 21 attached to the socket 15.

In each of the above embodiments, the elastic covering 21 may be made of a flame retardant material. If it does in this way, generation | occurrence | production of a fire can be suppressed and even if it is a case where a fire occurs, a fire spread can be suppressed.

In each of the above embodiments, the elastic cover 21 is detachable from the socket 15. However, the elastic cover 21 may be bonded to the outer periphery of the socket 15 via an adhesive. In this way, it is possible to more reliably prevent the elastic covering body 21 from falling off the socket 15.

In each of the above embodiments, the suspension method of the car 2 and the counterweight 3 is a 2: 1 roping method, but the suspension method of the car 2 and the counterweight 3 is a 1: 1 roping method. Also good. In this case, one main rope fixing device 13 to which one end portion of the main rope 7 is connected is attached to the car 2, and the other main rope fixing device 14 to which the other end portion of the main rope 7 is connected is the counterweight 3. Attached to.

2 cage (elevating body), 3 counterweight (elevating body), 15 socket, 20 convex part (socket side fitting part), 21 elastic covering, 22, 31 concave part (covering part fitting part), 41 convex part (Regulatory Department).

Claims

A main rope for suspending the lifting body is connected, and at least one of the convex portion and the concave portion is provided on the outer peripheral portion as a socket-side fitting portion, and covers the outer peripheral portion of the socket, and the outer peripheral portion of the socket is A main rope fixing device for an elevator, comprising: an elastic covering body formed on an inner peripheral portion of a covering-side fitting portion that fits into the socket-side fitting portion in a covered state.
The elevator main rope fixing device according to claim 1, wherein the covering body side fitting portion is formed in advance on an inner peripheral portion of the elastic covering body by processing the elastic covering body.
A main rope that suspends the lifting body is connected, and a convex portion is provided on the outer peripheral portion, and the outer peripheral portion of the socket is covered while avoiding the convex portion, and the displacement in the direction away from the socket is the convex portion. A main rope fixing device for an elevator, comprising an elastic covering body regulated by
The elevator main rope fixing device according to claim 1 or 3, wherein the elastic covering is made of a thermoplastic resin and is provided on an outer peripheral portion of the socket by injection molding.
The elevator main rope according to claim 1 or 3, wherein the elastic covering body is made of a resin that shrinks when receiving heat, and is attached to an outer peripheral portion of the socket by heat shrinkage. Fixing device.
The elevator according to claim 1 or 3, wherein the elastic covering body generates an elastic restoring force in a direction in which the socket is tightened, and is held on an outer peripheral portion of the socket by the elastic restoring force. Main rope fixing device.
The elevator main rope fixing device according to claim 1 or 3, wherein the elastic covering is made of a transparent material.
The elevator main rope fixing apparatus according to claim 1 or 3, wherein the elastic covering is made of a flame-retardant material.
The elevator main rope fixing device according to claim 1 or 3, wherein the elastic covering is bonded to an outer peripheral portion of the socket via an adhesive.
Elasticity that is provided only in one of a plurality of sockets that are spaced apart from each other and to which the main ropes that suspend the elevating body are respectively connected, and the sockets that are adjacent to each other, and covers the outer periphery of the socket An elevator main rope fixing device comprising a covering body.