Elevator rope gripping device

Abstract

The object is to obtain an elevator rope gripping device that can be easily manufactured while suppressing a decrease in durability. [Solution] A rope gripping device 50 has a gripping body 51 and a plurality of spacing members 52. The gripping body 51 has a pair of first gripping members 53, a second gripping member 54, and a plurality of fasteners 55. Each spacing member 52 is disposed between adjacent main ropes 15 of a plurality of main ropes 15 in a rope insertion groove 53c. The strength of the material constituting each first gripping member 53 is higher than the strength of the material constituting each spacing member 52.

Description

[Technical field]

[0001] The present disclosure relates to an elevator rope gripping device. [Background technology]

[0002] In a conventional elevator main rope retaining device, multiple main ropes are gripped by gripping tools, which keeps each of the multiple retaining tools vertical (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-2558 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional retention device described above, if 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 relative to the groove width becomes large. This makes it difficult to manufacture the gripper by bending sheet metal. In contrast, if the gripper is manufactured by resin molding, the grooves can be made deeper, but the strength decreases and the durability of the gripper decreases. In addition, if the gripper is manufactured by cutting metal, it takes a considerable amount of time to manufacture.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to obtain an elevator rope gripping device that can be easily manufactured while suppressing a decrease in durability. [Means for solving the problem]

[0006] The elevator rope gripping device of the present disclosure comprises a first gripping member having a rope insertion groove formed therein into which multiple main ropes are inserted, a second gripping member, and a fastener for fastening the first gripping member to the second gripping member, and comprises a gripping body attached to the multiple main ropes by clamping the multiple main ropes between the first gripping member and the second gripping member, and a spacing member attached to the gripping body and positioned between adjacent main ropes of the multiple main ropes within the rope insertion groove, and the strength of the material constituting the first gripping member is greater than the strength of the material constituting the spacing member. Effect of the Invention

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

[0008] [Figure 1] 1 is a schematic configuration diagram showing an elevator according to a first embodiment. [Diagram 2] FIG. 2 is a front view showing the second cleat device of FIG. 1. [Diagram 3] FIG. 3 is a side view showing the second cleat device of FIG. 2. [Figure 4] FIG. 2 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 5 is a front view showing the rope gripping device of FIG. [Figure 6] FIG. 5 is a side view showing the rope gripping device of FIG. [Figure 7] 5 is a front view showing the first gripping member of FIG. 4. [Figure 8] FIG. 5 is a front view showing the spacing member of FIG. [Figure 9] 5 is a front view showing the second gripping member of FIG. 4. [Figure 10] 7 is a side view showing a rope gripping device in which the second gripping member in FIG. 6 is replaced with a U-shaped second gripping member. FIG. [Figure 11] FIG. 11 is a front view showing an assembly of a first gripping member and a plurality of spacing members according to the second embodiment. [Figure 12] 12 is a cross-sectional view taken along line XII-XII in FIG. 11. [Figure 13] 13 is a cross-sectional view of an assembly of a first gripping member and a spacing member according to embodiment 3. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0010] The hoist 12 has a drive sheave 13, a hoist motor (not shown), and a hoist brake (not shown). The hoist motor rotates the drive sheave 13. The hoist brake keeps the drive sheave 13 stationary. The hoist brake also 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 14. The car 16 and the counterweight 17 move up and down in the hoistway 11 by rotating the drive sheave 13.

[0013] A pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are installed in the hoistway 11. The pair of car guide rails guide the ascent and descent of the car 16. The pair of counterweight guide rails guide the ascent and descent of the counterweight 17.

[0014] The car 16 is provided with a car hoisting wheel 18. The counterweight 17 is provided with a counterweight hoisting wheel 19.

[0015] A first cleat beam 20 and a second cleat beam 21 are provided at the top of the elevator shaft 11. The suspension body 14 has a first end 14a and a second end 14b. The first end 14a is connected to the first cleat beam 20 via a first cleat device 22. The second end 14b is connected to the second cleat beam 21 via a second cleat device 23.

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

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

[0018] Fig. 2 is a front view showing the second cleat device 23 of Fig. 1. Fig. 3 is a side view showing the second cleat device 23 of Fig. 2. Note that Figs. 2 and 3 show the second cleat device 23 in a state in which the rope gripping device 50 is not attached. The rope gripping device 50 is attached at the position shown by the two-dot chain line in Fig. 3.

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

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

[0021] Each cleat body 24 includes 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 passes through the second cleat beam 21 in the vertical direction. A plurality of nuts 26 are screwed into the upper end of the shackle rod 25.

[0023] The shackle spring 27 is provided between the nuts 26 and the upper surface of the second cleat beam 21. A coil spring is used as the shackle spring 27. The shackle rod 25 passes through 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 within the rope shackle 28.

[0025] The end of each main rope 15 is folded back along a wedge member 29, pulled out from a rope shackle 28, and secured to the main rope 15 itself. The configuration of the first cleat device 22 is similar to the configuration of the second cleat device 23.

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

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

[0028] Each of the first gripping members 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 of the first gripping members 53 is configured by bending a metal flat plate into a U-shape. That is, each of the first gripping members 53 is a U-shaped plate member.

[0030] A rope insertion groove 53c is formed on the inside of each of the first gripping members 53. Into the rope insertion groove 53c of each of the first gripping members 53, the portions of the corresponding four main ropes 15 that face the rope shackles 28 and the portions that are pulled out from the rope shackles 28 are inserted.

[0031] The second gripping member 54 is configured by bending a 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 mounting portion 54a and the second mounting portion 54b are parallel to each other. The connecting portion 54c connects the lower end of the first mounting portion 54a to the upper end of the second mounting portion 54b. The connecting portion 54c is perpendicular to the first mounting portion 54a and the second mounting portion 54b.

[0033] The first and second mounting portions 54a, 54b are respectively coupled to the corresponding first gripping members 53. The first and second mounting portions 54a, 54b close the openings of the corresponding rope insertion grooves 53c. As a result, the second gripping members 54 sandwich the eight main ropes 15 between themselves and the pair of first gripping members 53.

[0034] The plurality of fasteners 55 fasten the pair of first gripping members 53 to the second gripping member 54. A bolt is used as each fastener 55. By fastening the plurality of fasteners 55, the plurality of main ropes 15 are sandwiched between the pair of first gripping members 53 and second gripping members 54. In this way, the gripping body 51 is attached to the plurality of main ropes 15.

[0035] Each spacing member 52 is attached to the gripping body 51 by a corresponding fastener 55. Each fastener 55 penetrates the corresponding spacing member 52. Furthermore, each spacing member 52 is disposed between adjacent main ropes 15 of the multiple main ropes 15 in the rope insertion groove 53c. As a result, each spacing member 52 maintains the spacing between adjacent main ropes 15.

[0036] The strength of the material constituting each of the first gripping members 53 is greater than the strength of the material constituting each of the spacing members 52. In other words, each of the spacing members 52 is made of a material having a lower strength than the material constituting each of the first gripping members 53. In the first embodiment, the material constituting each of the first gripping members 53 is metal, and the material constituting each of the spacing members 52 is resin.

[0037] Fig. 7 is a front view showing the first grip member 53 of Fig. 4. A plurality of first through holes 53d are provided in the facing portion 53a. A corresponding fastener 55 is inserted into each of the first through holes 53d.

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

[0039] Fig. 9 is a front view showing the second grip member 54 of Fig. 4. Each of the first mounting portion 54a and the second mounting portion 54b is provided with a plurality of screw holes 54d. 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 14b during elevator installation work, first, one of the first gripping members 53, three spacing members 52, and three fasteners 55 are combined to assemble a first assembly. After this, the four main ropes 15 are sandwiched between the first assembly and the first mounting portion 54a. Then, each fastener 55 is screwed into the corresponding screw hole 54d.

[0041] Also, the other first gripping member 53, the three spacing members 52, and the three fasteners 55 are combined to assemble a second assembly. After this, 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 multiple main ropes 15. Therefore, the spacing between adjacent main ropes 15 is maintained at a specified spacing. This makes it possible to suppress the inclination of the shackle rod 25 accompanying the raising and lowering of the car 16 and the rotation of the rope shackles 28 due to the stretching of each main rope 15, and to suppress the generation of noise due to the rope shackles 28 coming into contact with each other.

[0043] Furthermore, the strength of the material constituting each of the first gripping members 53 is greater than the strength of the material constituting each of the spacing members 52. For this reason, each of the first gripping members 53 can secure sufficient strength to grip the multiple main ropes 15, while improving the degree of freedom in manufacturing each of the spacing members 52. Therefore, the rope gripping device 50 as a whole can be easily manufactured while suppressing a decrease in durability.

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

[0045] Moreover, each of the first gripping members 53 is a U-shaped plate member, which makes it possible to easily manufacture each of the first gripping members 53 and reduce costs.

[0046] Moreover, 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 disposed at different positions in the height direction.

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

[0048] Embodiment 2 Next, Fig. 11 is a front view showing an assembly of a 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 in Fig. 11.

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

[0050] The diameter of each insert hole 53e gradually increases from the bottom surface of the rope insertion groove 53c toward the outside. That is, the cross-sectional shape of each insert hole 53e is tapered so as to widen from the bottom surface of the rope insertion groove 53c toward the outside.

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

[0052] Other configurations in the second embodiment are similar to those in the first embodiment.

[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, each spacing member 52 will not fall from the first gripping member 53, improving the ease of installation work.

[0054] In addition, by using a nest during insert molding, the number of main ropes 15, the pitch of the main ropes 15, the diameter of the main ropes 15, etc. can be easily accommodated without increasing the number of types of molds.

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

[0056] Embodiment 3 13 is a cross-sectional view of an assembly of a first gripping member and a spacing member according to embodiment 3. Spacing member 56 of embodiment 3 is an integrally molded product made of resin. Spacing member 56 has base portion 56a and a plurality of protrusions 56b.

[0057] The base portion 56a has a U-shape. The outer surface of the base portion 56a contacts the entire inner surface of the rope insertion groove 53c. Each of the protrusions 56b protrudes from the base portion 56a to the side opposite the bottom surface of the rope insertion groove 53c. Each of the protrusions 56b is disposed between adjacent main ropes 15 among the multiple main ropes 15.

[0058] An individual groove 56c is provided on both sides of each of the protrusions 56b. A corresponding one of the main ropes 15 is inserted into each individual groove 56c.

[0059] A plurality of second through holes 56d are provided in the spacing member 56. A corresponding fastener 55 is passed through each of the second through holes 56d.

[0060] Other configurations in the third embodiment are similar to those in the first embodiment.

[0061] In such a rope gripping device, since the spacing member 56 is an integrally molded product, it is possible to improve the positioning accuracy for the multiple main ropes 15. In other words, the spacing between adjacent main ropes 15 can be maintained with higher accuracy.

[0062] In the third embodiment, a plurality of insert holes 53e similar to those in the second embodiment may be provided in the first gripping member 53, and the spacing member 56 may be insert-molded into the first gripping member 53.

[0063] In addition, in embodiments 1 and 3, multiple spacing members 52 or spacing members 56 may be attached to first gripping member 53 by forming fine irregularities on the surface of first gripping member 53, and injection molding resin into first gripping member 53 to allow the resin to fill the irregularities.

[0064] Furthermore, in the first to third embodiments, the number of main ropes 15 is eight, but the number of main ropes 15 is not particularly limited and may be any number equal to or greater than two. Even if the number of main ropes 15 is other than eight, it can be easily accommodated by changing the number of holes through which fasteners 55 pass, the number of spacing members 52, the number of protrusions 56b, or the like.

[0065] Further, in the first to third embodiments, a pair of first gripping members 53 are used, but the number of first gripping members 53 may be only one. That is, although the multiple main ropes 15 are aligned in two rows in Fig. 3, the multiple main ropes 15 may be aligned in one row.

[0066] In addition, in the first to third embodiments, the rope gripping device 50 may be installed at the first end 14a of the suspended body 14, or at both the first end 14a and the second end 14b.

[0067] Moreover, the layout of the entire elevator is not limited to the layout in Fig. 1. For example, the roping system may be a 1:1 roping system.

[0068] The elevator may be an elevator with a machine room, a machine room-less elevator, a double-deck elevator, a one-shaft multi-car elevator, etc. The one-shaft multi-car elevator is a system in which an upper car and a lower car arranged directly below the upper car each independently ascend and descend in a common elevator shaft.

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

[0070] Various aspects of the present disclosure are summarized below as appendices.

[0071] (Appendix 1) A gripping body including 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, the gripping body being attached to the plurality of main ropes by sandwiching the plurality of main ropes between the first gripping member and the second gripping member; A spacing member attached to the gripping body and disposed between adjacent main ropes of the plurality of main ropes in the rope insertion groove. Equipped with An elevator rope gripping device, wherein the strength of a material constituting the first gripping member is greater than the strength of a material constituting the spacing member. (Appendix 2) An elevator rope gripping device as described in Appendix 1, wherein the material constituting the first gripping member is metal and the material constituting the spacing maintaining member is resin. (Appendix 3) 3. The elevator rope gripping device according to claim 2, wherein the first gripping member is a U-shaped plate member. (Appendix 4) 4. An elevator rope gripping device according to claim 2, wherein the spacing member is insert molded into 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, An individual groove is formed on each side of the protrusion, 5. The elevator rope gripping device according to claim 2, wherein a corresponding main rope among the plurality of main ropes is inserted into each of the individual grooves. 2. The apparatus described in claim 1. [Explanation of symbols]

[0072] 15 main rope, 50 rope gripping device, 51 gripping body, 52, 56 spacing member, 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 gripping body including 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, the gripping body being attached to the plurality of main ropes by sandwiching the plurality of main ropes between the first gripping member and the second gripping member; A spacing member attached to the gripping body and disposed between adjacent main ropes of the plurality of main ropes in the rope insertion groove. Equipped with An elevator rope gripping device, wherein the strength of the material constituting the first gripping member is greater than the strength of the material constituting the spacing member.

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

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

4. 4. The elevator rope gripping device according to claim 2, 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, An individual groove is formed on each side of the protrusion, 4. The elevator rope gripping device according to claim 2, wherein a corresponding one of the plurality of main ropes is inserted into each of the individual grooves.

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