Rope holding device of elevator

Abstract

To provide a rope holding device of an elevator which can facilitate manufacture, while suppressing lowering of durability.SOLUTION: A rope holding device 50 has a holding boy 51, and a plurality of gap holding members 52. The holding body 51 has a pair of first holding members 53, a second holding member 54, and a plurality of fastening tools 55. Each of the gap holding members 52 is arranged between adjacent main ropes 15 among the plurality of main ropes 15, in a rope insertion groove 53c. Strength of the material constituting each of the first holding members 53 is higher than strength of the material constituting each of the gap holding members 52.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to a rope gripping device for an elevator.

Background Art

[0002] In a conventional elevator main rope retaining device, a plurality of main ropes are gripped by grippers. As a result, the respective postures of the plurality of retaining tools are maintained in a vertical state (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional retaining device as described above, when the diameter of each main rope is small, the width of the groove into which each main rope is inserted becomes small, and the depth of the groove with respect to the width of the groove becomes large. For this reason, it is difficult to manufacture the gripper by bending a sheet metal. On the other hand, if the gripper is manufactured by resin molding, each groove can be made deeper, but the strength is lowered and the durability of the gripper is reduced. Further, when manufacturing the gripper by cutting metal, it takes a considerable amount of labor for manufacturing.

[0005] The present disclosure has been made to solve the above-described problems, and an object thereof is to obtain an elevator rope gripping device that can facilitate manufacturing while suppressing a decrease in durability.

Means for Solving the Problems

[0006] The rope gripping device of an elevator according to the present disclosure includes a first gripping member in which a rope insertion groove into which a plurality of main ropes are inserted is formed, a second gripping member, and a fastening member for fastening the first gripping member to the second gripping member. A gripping body is attached to the plurality of main ropes by sandwiching the plurality of main ropes between the first gripping member and the second gripping member, and a spacing member is attached to the gripping body and disposed between adjacent main ropes among the plurality of main ropes in the rope insertion groove. The strength of the material constituting the first gripping member is higher than the strength of the material constituting the spacing member.

Effects of the Invention

[0007] According to the rope gripping device of the elevator of the present disclosure, it is possible to facilitate manufacturing while suppressing a decrease in durability.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

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Figure 4

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Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments will be described with reference to the drawings. Embodiment 1. FIG. 1 is a schematic configuration diagram showing an elevator according to Embodiment 1. A hoisting machine 12 is installed above the hoistway 11.

[0010] The hoisting machine 12 has a drive sheave 13, a hoisting machine motor (not shown), and a hoisting machine brake (not shown). The hoisting machine motor rotates the drive sheave 13. The hoisting machine brake holds the drive sheave 13 in a stationary state. Further, the hoisting machine brake brakes the rotation of the drive sheave 13.

[0011] A suspension body 14 is wound around the drive sheave 13. The suspension body 14 has a plurality of main ropes 15. In FIG. 1, only one main rope 15 is shown.

[0012] The car 16 and the counterweight 17 are suspended in the hoistway 11 by the suspension body 14. Further, the car 16 and the counterweight 17 move up and down in the hoistway 11 by rotating the drive sheave 13.

[0013] In the hoistway 11, a pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are installed. The pair of car guide rails guide the up and down movement of the car 16. The pair of counterweight guide rails guide the up and down movement of the counterweight 17.

[0014] A car suspension 18 is provided on the car 16. A counterweight suspension 19 is provided on the counterweight 17.

[0015] Above the hoistway 11, a first wire retaining beam 20 and a second wire retaining beam 21 are provided. The suspension body 14 has a first end 14a and a second end 14b. The first end 14a is connected to the first wire retaining beam 20 via a first wire retaining device 22. The second end 14b is connected to the second wire retaining beam 21 via a second wire retaining device 23.

[0016] The suspension body 14 is wound around a car suspension pulley 18, a drive sheave 13, and a counterweight suspension pulley 19 in order from the first end 14a side. The elevator of Embodiment 1 is an elevator with a 2:1 roping system.

[0017] A rope gripping device 50 is attached to the second end 14b. The detailed configuration of the rope gripping device 50 will be described later.

[0018] FIG. 2 is a front view showing the second wire retaining device 23 of FIG. 1. FIG. 3 is a side view showing the second wire retaining device 23 of FIG. 2. Note that FIGS. 2 and 3 show the second wire retaining device 23 in a state where the rope gripping device 50 is not attached. The rope gripping device 50 is attached at the position indicated by the two-dot chain line in FIG. 3.

[0019] The second wire retaining device 23 has a plurality of wire retaining bodies 24. The number of the plurality of wire retaining bodies 24 is the same as the number of main ropes 15. In the examples of FIGS. 2 and 3, eight main ropes 15 are used.

[0020] At the lower end of each wire retaining body 24, a corresponding main rope 15 is connected. Each main rope 15 is connected to the second wire retaining beam 21 via a corresponding wire retaining body 24.

[0021] Each wire retaining body 24 has a shackle rod 25, a plurality of nuts 26, a shackle spring 27, a rope shackle 28, and a wedge member 29.

[0022] The shackle rod 25 penetrates the second wire stop beam 21 in the vertical direction. A plurality of nuts 26 are screwed onto the upper end of the shackle rod 25.

[0023] The shackle spring 27 is provided between the plurality of nuts 26 and the upper surface of the second wire stop beam 21. A coil spring is used as the shackle spring 27. The shackle rod 25 penetrates the shackle spring 27.

[0024] The rope shackle 28 is connected to the lower end of the shackle rod 25. The wedge member 29 is housed in the rope shackle 28.

[0025] The end of each main rope 15 is folded back along the wedge member 29, pulled out from the rope shackle 28, and fixed to the main rope 15 itself. Note that the configuration of the first wire stop device 22 is the same as that of the second wire stop device 23.

[0026] Figure 4 is a cross-sectional view taken along line IV-IV of Figure 1, showing the rope gripping device 50 as seen from directly above. Figure 5 is a front view showing the rope gripping device 50 of Figure 4, and is a view of the rope gripping device 50 as seen along the arrow V in Figure 4. Figure 6 is a side view showing the rope gripping device 50 of Figure 4, and is a view of the rope gripping device 50 as seen along the arrow VI in Figure 4.

[0027] The rope gripping device 50 has a gripping body 51 and a plurality of spacing holding members 52. The gripping body 51 is attached to the second end portion 14b by gripping a plurality of main ropes 15. Further, the gripping body 51 has a pair of first gripping members 53, a second gripping member 54, and a plurality of fasteners 55.

[0028] Each first gripping member 53 has a facing portion 53a and a pair of protruding portions 53b. The facing portion 53a faces the second gripping member 54. The pair of protruding portions 53b protrude from both ends of the facing portion 53a toward the second gripping member 54 at a right angle to the facing portion 53a.

[0029] Each first gripping member 53 is formed by bending a flat metal plate into a U shape. That is, each first gripping member 53 is a U-shaped plate member.

[0030] A rope insertion groove 53c is formed inside each first gripping member 53. In the rope insertion groove 53c of each first gripping member 53, the portion of the corresponding four main ropes 15 leading to the rope shackle 28 and the portion pulled out from the rope shackle 28 are inserted.

[0031] The second gripping member 54 is formed by bending a flat metal plate into a Z shape. That is, the second gripping member 54 is a Z-shaped plate member. The second gripping member 54 has a flat first attachment portion 54a, a flat second attachment portion 54b, and a flat connecting portion 54c.

[0032] The first attachment portion 54a and the second attachment portion 54b are parallel to each other. The connecting portion 54c connects the lower end of the first attachment portion 54a and the upper end of the second attachment portion 54b. Also, the connecting portion 54c is perpendicular to the first attachment portion 54a and the second attachment portion 54b.

[0033] A corresponding first gripping member 53 is coupled to each of the first attachment portion 54a and the second attachment portion 54b. Also, each of the first attachment portion 54a and the second attachment portion 54b closes the opening of the corresponding rope insertion groove 53c. Thereby, the second gripping member 54 sandwiches eight main ropes 15 between the pair of first gripping members 53.

[0034] A plurality of fasteners 55 fasten the pair of first gripping members 53 to the second gripping member 54. As each fastener 55, a bolt is used. By tightening the plurality of fasteners 55, the plurality of main ropes 15 are sandwiched between the pair of first gripping members 53 and the second gripping member 54. Thereby, the gripping body 51 is attached to the plurality of main ropes 15.

[0035] Each spacing holding member 52 is attached to the gripping body 51 by a corresponding fastener 55. Each fastener 55 passes through the corresponding spacing holding member 52. Further, each spacing holding member 52 is disposed between adjacent main ropes 15 among a plurality of main ropes 15 within the rope insertion groove 53c. Thereby, each spacing holding member 52 holds the spacing between adjacent main ropes 15.

[0036] The strength of the material constituting each first gripping member 53 is higher than the strength of the material constituting each spacing holding member 52. In other words, each spacing holding member 52 is made of a material with lower strength compared to the material constituting each first gripping member 53. In Embodiment 1, the material constituting each first gripping member 53 is metal, and the material constituting each spacing holding member 52 is resin.

[0037] FIG. 7 is a front view showing the first gripping member 53 of FIG. 4. A plurality of first through holes 53d are provided in the opposing portion 53a. A corresponding fastener 55 is passed through each first through hole 53d.

[0038] FIG. 8 is a front view showing the spacing holding member 52 of FIG. 4. The outer shape of each spacing holding member 52 is a rectangular parallelepiped. A second through hole 52a is provided in the spacing holding member 52. A corresponding fastener 55 is passed through the second through hole 52a.

[0039] FIG. 9 is a front view showing the second gripping member 54 of FIG. 4. A plurality of screw holes 54d are provided in each of the first attachment portion 54a and the second attachment portion 54b. A corresponding fastener 55 is screwed into each screw hole 54d.

[0040] For example, when attaching the rope gripping device 50 to the second end portion 14b during the installation work of an elevator, first, one first gripping member 53, three spacing holding members 52, and three fasteners 55 are combined to assemble a first assembly. After that, four main ropes 15 are sandwiched between the first assembly and the first attachment portion 54a. Then, each fastener 55 is screwed into the corresponding screw hole 54d.

[0041] Further, the other first gripping member 53, the three spacing members 52, and the three fasteners 55 are combined to assemble the second assembly. After that, the remaining four main ropes 15 are sandwiched between the second assembly and the second mounting portion 54b. Then, each fastener 55 is screwed into the corresponding screw hole 54d.

[0042] In such a rope gripping device 50, a spacing member 52 is interposed between adjacent main ropes 15 among the plurality of main ropes 15. Therefore, the interval between adjacent main ropes 15 is maintained at a specified interval. As a result, the inclination of the shackle rod 25 accompanying the elevation and descent of the cage 16 and the rotation of the rope shackle 28 due to the elongation of each main rope 15 can be suppressed, and the generation of noise due to the contact between the rope shackles 28 can be suppressed.

[0043] Also, the strength of the material constituting each first gripping member 53 is higher than the strength of the material constituting each spacing member 52. Therefore, while ensuring sufficient strength by each first gripping member 53 to grip the plurality of main ropes 15, the degree of freedom in manufacturing each spacing member 52 can be improved. Accordingly, as the entire rope gripping device 50, the reduction in durability can be suppressed while facilitating manufacturing.

[0044] Also, the material constituting each first gripping member 53 is metal, and the material constituting each spacing member 52 is resin. Therefore, sufficient strength can be ensured by each first gripping member 53, and the overall size can be reduced compared to the case where the first gripping member 53 and the plurality of spacing members 52 are integrally molded with resin.

[0045] Also, each first gripping member 53 is a U-shaped plate member. Therefore, each first gripping member 53 can be easily manufactured, and the cost can be reduced.

[0046] Also, the second gripping member 54 is a Z-shaped plate member. Therefore, one first gripping member 53 and the other first gripping member 53 can be arranged at different positions in the height direction.

[0047] Note that, as shown in FIG. 10, the second gripping member 54 may be a U-shaped plate member. In this case, one first gripping member 53 and the other first gripping member 53 can be arranged at the same position in the height direction.

[0048] Embodiment 2. Next, FIG. 11 is a front view showing an assembly of the first gripping member and a plurality of spacing members according to Embodiment 2. FIG. 12 is a cross-sectional view taken along line XII-XII of FIG. 11.

[0049] In the first gripping member 53 in Embodiment 2, insert holes 53e are provided on both sides of each first through hole 53d. That is, two insert holes 53e correspond to each spacing member 52.

[0050] The diameter of each insert hole 53e gradually increases outward from the bottom surface of the rope insertion groove 53c. That is, the cross-sectional shape of each insert hole 53e is a tapered shape that widens outward from the bottom surface of the rope insertion groove 53c.

[0051] Each spacing member 52 is insert-molded into the first gripping member 53. Each spacing member 52 has a pair of coupling portions 52b. The pair of coupling portions 52b are formed by injecting the resin constituting each spacing member 52 into the corresponding two insert holes 53e in an uncured state and then curing it.

[0052] Other configurations in Embodiment 2 are the same as those in Embodiment 1.

[0053] In such a rope gripping device, each spacing member 52 is insert-molded into the first gripping member 53. Therefore, at the installation site, the spacing members 52 do not fall off from the first gripping member 53, and the installation workability can be improved.

[0054] Also, by using inserts during insert molding, it is possible to easily cope with the number of main ropes 15, the pitch of the main ropes 15, the diameter of the main ropes 15, etc., without increasing the number of mold types.

[0055] Note that the number, shape, position, etc. of the insert holes 53e are not limited to the above example.

[0056] Embodiment 3. Next, FIG. 13 is a cross-sectional view of an assembly of the first gripping member and the spacing holding member according to Embodiment 3. The spacing holding member 56 of Embodiment 3 is an integrally molded product made of resin. Further, the spacing holding member 56 has a base portion 56a and a plurality of convex portions 56b.

[0057] The shape of the base portion 56a is U-shaped. The outer surface of the base portion 56a is in contact with the entire inner surface of the rope insertion groove 53c. Each convex portion 56b protrudes from the base portion 56a to the side opposite to the bottom surface of the rope insertion groove 53c. Further, each convex portion 56b is disposed between adjacent main ropes 15 among the plurality of main ropes 15.

[0058] Individual grooves 56c are provided on both sides of each convex portion 56b. Corresponding main ropes 15 among the plurality of main ropes 15 are inserted into each individual groove 56c.

[0059] A plurality of second through holes 56d are provided in the spacing holding member 56. Corresponding fasteners 55 are passed through each second through hole 56d.

[0060] Other configurations in Embodiment 3 are the same as those in Embodiment 1.

[0061] In such a rope gripping device, since the spacing holding member 56 is an integrally molded product, the positioning accuracy with respect to the plurality of main ropes 15 can be improved. That is, the interval between adjacent main ropes 15 can be maintained with higher accuracy.

[0062] Note that in Embodiment 3, a plurality of insert holes 53e similar to those in Embodiment 2 may be provided in the first gripping member 53, and the spacing holding member 56 may be insert molded into the first gripping member 53.

[0063] Further, in Embodiments 1 and 3, fine irregularities may be formed on the surface of the first gripping member 53, and a resin may be injection-molded onto the first gripping member 53 so that the resin enters the irregularities, thereby coupling the plurality of spacing members 52 or the spacing member 56 to the first gripping member 53.

[0064] Further, in Embodiments 1 to 3, the case where the number of main ropes 15 is eight is shown, but the number of main ropes 15 is not particularly limited, and any number may be used as long as it is two or more. Even when the number of main ropes 15 is other than eight, it can be easily dealt with by changing the number of holes through which the fastener 55 passes, the number of spacing members 52, the number of convex portions 56b, or the like.

[0065] Further, in Embodiments 1 to 3, a pair of first gripping members 53 are used, but the number of first gripping members 53 may be only one. That is, in FIG. 3, a plurality of main ropes 15 are aligned in two rows, but the plurality of main ropes 15 may be aligned in one row.

[0066] Further, in Embodiments 1 to 3, the rope gripping device 50 may be installed at the first end portion 14a of the suspension body 14, or may be installed at both the first end portion 14a and the second end portion 14b.

[0067] Further, the layout of the entire elevator is not limited to the layout of FIG. 1. For example, the roping method may be a 1:1 roping method.

[0068] Further, the elevator may be an elevator having a machine room, a machine-roomless elevator, a double-deck elevator, a one-shaft multi-car type elevator, or the like. The one-shaft multi-car type is a method in which an upper car and a lower car arranged directly below the upper car move up and down in a common hoistway independently.

[0069] As described above, the preferred embodiments and the like have been described in detail, but the present invention is not limited to the above-described embodiments and the like, and various modifications and substitutions can be made to the above-described embodiments and the like without departing from the scope described in the claims.

[0070] Hereinafter, aspects of the present disclosure will be collectively described as appendices.

[0071] (Appendix 1) A first gripping member having a rope insertion groove into which a plurality of main ropes are inserted, a second gripping member, and a fastener for fastening the first gripping member to the second gripping member, and a gripping body attached to the plurality of main ropes by sandwiching the plurality of main ropes between the first gripping member and the second gripping member, and A spacing member attached to the gripping body and disposed between adjacent main ropes among the plurality of main ropes in the rope insertion groove are provided, An elevator rope gripping device in which the strength of the material constituting the first gripping member is higher than the strength of the material constituting the spacing member. (Appendix 2) The elevator rope gripping device according to Appendix 1, wherein the material constituting the first gripping member is metal and the material constituting the spacing member is resin. (Appendix 3) The elevator rope gripping device according to Appendix 2, wherein the first gripping member is a U-shaped plate member. (Appendix 4) The elevator rope gripping device according to Appendix 2 or Appendix 3, wherein the spacing member is insert-molded to the first gripping member. (Appendix 5) The spacing member is an integrally molded product having a base portion in contact with the inner surface of the rope insertion groove and a protruding portion protruding from the base portion to the side opposite to the bottom surface of the rope insertion groove, Individual grooves are formed on both sides of the protruding portion, The elevator rope gripping device according to any one of Appendices 2 to 4, wherein a corresponding main rope among the plurality of main ropes is inserted into each of the individual grooves. The device according to Appendix 1.

Description of Reference Numerals

[0072] 15 main rope, 50 rope gripping device, 51 gripping body, 52, 56 spacing holding members, 53 first gripping member, 53c rope insertion groove, 54 second gripping member, 55 fastener, 56a base portion, 56b convex portion, 56c individual groove.

Claims

1. A first gripping member having a rope insertion groove into which a plurality of main ropes are inserted, a second gripping member, and a fastener for fastening the first gripping member to the second gripping member, and a gripping body attached to the plurality of main ropes by sandwiching the plurality of main ropes between the first gripping member and the second gripping member, and a spacing member attached to the gripping body and disposed between adjacent main ropes among the plurality of main ropes in the rope insertion groove are provided, An elevator rope gripping device in which the strength of the material constituting the first gripping member is higher than the strength of the material constituting the spacing member.

2. The elevator rope gripping device according to claim 1, wherein the material constituting the first gripping member is metal and the material constituting the spacing member is resin.

3. The elevator rope gripping device according to claim 2, wherein the first gripping member is a U-shaped plate member.

4. The elevator rope gripping device according to claim 2 or claim 3, wherein the spacing member is insert-molded into the first gripping member.

5. The spacing member is an integrally molded product having a base portion in contact with the inner surface of the rope insertion groove and a convex portion protruding from the base portion to the side opposite to the bottom surface of the rope insertion groove, individual grooves are formed on both sides of the convex portion, The elevator rope gripping device according to claim 2 or claim 3, wherein a corresponding main rope among the plurality of main ropes is inserted into each of the individual grooves.

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