Rope holding device for elevator

Abstract

The invention provides a rope holding device of an elevator, which can restrain reduction of durability and make manufacturing easier. The rope gripping device (50) has a gripping body (51) and a plurality of spacer 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 of the spacer members (52) is disposed in the rope insertion groove (53c) between adjacent main ropes (15) among the plurality of main ropes (15). The strength of the material constituting each first gripping member (53) is higher than the strength of the material constituting each spacer member (52).

Description

Technical Field

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

[0002] In a conventional fixing device for an elevator main rope, a plurality of main ropes are gripped by a gripping member. Thereby, the respective postures of the plurality of fixing members are maintained in a plumb state (for example, refer to Patent Document 1).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2003-2558 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] In the conventional fixing 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 becomes large relative to the width of the groove. Therefore, it is difficult to manufacture the gripping member by bending a metal plate. On the other hand, if the gripping member is manufactured by resin molding, each groove can be deepened, but the strength becomes low and the durability of the gripping member is reduced. In addition, when the gripping member is manufactured by cutting metal, it takes a considerable amount of labor and time.

[0008] The present disclosure has been made to solve the above problems, and an object thereof is to obtain a rope gripping device for an elevator that can suppress a reduction in durability and facilitate manufacturing.

[0009] Means for Solving the Problems

[0010] The rope gripping device for an elevator according to the present disclosure includes: a gripping body having a first gripping member, a second gripping member, and a fastener for fastening the first gripping member to the second gripping member, the first gripping member and the second gripping member being formed with rope insertion grooves into which a plurality of main ropes are inserted, and the gripping body being mounted on 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 maintaining member mounted on 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 being higher than the strength of the material constituting the spacing maintaining member.

[0011] Advantages of the Invention

[0012] According to the rope gripping device for an elevator of the present disclosure, it is possible to suppress a reduction in durability and facilitate manufacturing. Brief Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of an elevator according to Embodiment 1.

[0014] Figure 2 It represents Figure 1 the front view of the second rope end fixing device.

[0015] Figure 3 It represents Figure 2 the side view of the second rope end fixing device.

[0016] Figure 4 It is a cross-sectional view along Figure 1 the IV-IV line of

[0017] Figure 5 It represents Figure 4 the front view of the rope gripping device.

[0018] Figure 6 It represents Figure 4 the side view of the rope gripping device.

[0019] Figure 7 It represents Figure 4 the front view of the first gripping member.

[0020] Figure 8 It represents Figure 4 the front view of the spacing maintaining member.

[0021] Figure 9 It represents Figure 4 the front view of the second gripping member.

[0022] Figure 10 It represents the case where Figure 6 the second gripping member of

[0023] Figure 11 is replaced with a U-shaped second gripping member, showing the side view of the rope gripping device.

[0024] Figure 12 It is a cross-sectional view along Figure 11 the XII-XII line of

[0025] Figure 13 It is a cross-sectional view of the assembly of the first gripping member and the spacing maintaining member in Embodiment 3.

[0026] Reference Numeral Explanation

[0027] 15: Main rope; 50: Rope gripping device; 51: Gripping body; 52, 56: Spacing maintaining members; 53: First gripping member; 53c: Rope insertion groove; 54: Second gripping member; 55: Fastener; 56a: Base; 56b: Protrusion; 56c: Separate groove. Detailed implementation mode

[0028] Hereinafter, the implementation mode will be described with reference to the drawings.

[0029] Implementation mode 1.

[0030] Figure 1 It is a schematic structural diagram of the elevator of Implementation mode 1. A traction machine 12 is provided at the upper part of the hoistway 11.

[0031] The traction machine 12 has a drive sheave 13, a traction machine motor (not shown), and a traction machine brake (not shown). The traction machine motor rotates the drive sheave 13. The traction machine brake holds the drive sheave 13 in a stationary state. In addition, the traction machine brake brakes the rotation of the drive sheave 13.

[0032] A suspension body 14 is wound around the drive sheave 13. The suspension body 14 has a plurality of main ropes 15. In Figure 1 only one main rope 15 is shown.

[0033] The car 16 and the counterweight 17 are suspended in the hoistway 11 by the suspension body 14. In addition, the car 16 and the counterweight 17 move up and down in the hoistway 11 by rotating the drive sheave 13.

[0034] A pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are provided in the hoistway 11. 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.

[0035] A car suspension sheave 18 is provided on the car 16. A counterweight suspension sheave 19 is provided on the counterweight 17.

[0036] A first rope socket fixing beam 20 and a second rope socket fixing beam 21 are provided at the upper part of the hoistway 11. The suspension body 14 has a first end 14a and a second end 14b. The first end 14a is connected to the first rope socket fixing beam 20 via a first rope socket fixing device 22. The second end 14b is connected to the second rope socket fixing beam 21 via a second rope socket fixing device 23.

[0037] The suspension body 14 is wound around the car suspension sheave 18, the drive sheave 13, and the counterweight suspension sheave 19 in sequence from the first end 14a side. The elevator of Implementation mode 1 is a 2:1 rope winding type elevator.

[0038] A rope gripping device 50 is installed at the second end 14b. The detailed structure of the rope gripping device 50 will be described later.

[0039] Figure 2 It is showing Figure 1 a front view of the second rope socket fixing device 23 of Figure 3 It is showingFigure 2 Side view of the second rope end fixing device 23. Additionally, Figure 2 and Figure 3 show the second rope end fixing device 23 in a state where the rope gripping device 50 is not installed. The rope gripping device 50 is installed at the position indicated by the double-dashed line in Figure 3 .

[0040] The second rope end fixing device 23 has a plurality of rope end fixing bodies 24. The number of the plurality of rope end fixing bodies 24 is the same as the number of the main ropes 15. In the examples of Figure 2 and Figure 3 , eight main ropes 15 are used.

[0041] At the lower end of each rope end fixing body 24, the corresponding main rope 15 is connected. Each main rope 15 is connected to the second rope end fixing beam 21 via the corresponding rope end fixing body 24.

[0042] Each rope end fixing 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.

[0043] The shackle rod 25 penetrates the second rope end fixing beam 21 in the vertical direction. A plurality of nuts 26 are screwed onto the upper end of the shackle rod 25.

[0044] The shackle spring 27 is provided between the plurality of nuts 26 and the upper surface of the second rope end fixing beam 21. As the shackle spring 27, a helical spring is used. The shackle rod 25 penetrates the shackle spring 27.

[0045] 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.

[0046] 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. Additionally, the structure of the first rope end fixing device 22 is the same as the structure of the second rope end fixing device 23.

[0047] Figure 4 is a cross-sectional view along the IV-IV line of Figure 1 , showing the rope gripping device 50 viewed 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 observed along the arrow V of 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 observed along the arrow VI of Figure 4 .

[0048] The rope gripping device 50 has a gripping body 51 and a plurality of spacing maintaining members 52. The gripping body 51 is mounted on the second end portion 14b by gripping a plurality of main ropes 15. In addition, the gripping body 51 has a pair of first gripping members 53, a second gripping member 54, and a plurality of fasteners 55.

[0049] Each first gripping member 53 has an opposing portion 53a and a pair of protruding portions 53b. The opposing portion 53a opposes the second gripping member 54. The pair of protruding portions 53b protrude from both ends of the opposing portion 53a toward the second gripping member 54 at a right angle with respect to the opposing portion 53a.

[0050] 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.

[0051] 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 portions of the corresponding 4 main ropes 15 going to the rope hook 28 and the portions pulled out from the rope hook 28 are inserted.

[0052] 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 mounting portion 54a, a flat second mounting portion 54b, and a flat connecting portion 54c.

[0053] 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 and the upper end of the second mounting portion 54b. In addition, the connecting portion 54c is at a right angle with respect to the first mounting portion 54a and the second mounting portion 54b.

[0054] The corresponding first gripping members 53 are respectively joined to the first mounting portion 54a and the second mounting portion 54b. In addition, the first mounting portion 54a and the second mounting portion 54b respectively block the openings of the corresponding rope insertion grooves 53c. Thereby, the second gripping member 54 sandwiches 8 main ropes 15 between the pair of first gripping members 53.

[0055] A plurality of fasteners 55 fasten the pair of first gripping members 53 to the second gripping member 54. Bolts are 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 the second gripping member 54. Thereby, the gripping body 51 is mounted on the plurality of main ropes 15.

[0056] Each spacing maintaining member 52 is attached to the holding body 51 by a corresponding fastener 55. Each fastener 55 penetrates through the corresponding spacing maintaining member 52. Further, each spacing maintaining member 52 is disposed between adjacent main ropes 15 among the plurality of main ropes 15 within the rope insertion groove 53c. Thereby, each spacing maintaining member 52 maintains the spacing between adjacent main ropes 15.

[0057] The strength of the material forming each first holding member 53 is higher than the strength of the material forming each spacing maintaining member 52. Conversely, each spacing maintaining member 52 is formed of a material having a strength lower than the material forming each first holding member 53. In Embodiment 1, the material forming each first holding member 53 is metal, and the material forming each spacing maintaining member 52 is resin.

[0058] Figure 7 is a front view of Figure 4 the first holding member 53. A plurality of first through holes 53d are provided in the opposing portion 53a. The corresponding fasteners 55 pass through each first through hole 53d.

[0059] Figure 8 is a front view of Figure 4 the spacing maintaining member 52. The outer shape of each spacing maintaining member 52 is a rectangular parallelepiped. A second through hole 52a is provided in the spacing maintaining member 52. The corresponding fasteners 55 pass through the second through hole 52a.

[0060] Figure 9 is a front view of Figure 4 the second holding member 54. A plurality of threaded holes 54d are provided in the first attachment portion 54a and the second attachment portion 54b, respectively. The corresponding fasteners 55 are screwed into each threaded hole 54d.

[0061] For example, during the installation work of an elevator, when the rope holding device 50 is attached to the second end portion 14b, first, one first holding member 53, three spacing maintaining members 52, and three fasteners 55 are combined and assembled into a first assembly. Thereafter, four main ropes 15 are clamped between the first assembly and the first attachment portion 54a. Then, each fastener 55 is screwed into the corresponding threaded hole 54d.

[0062] Further, the other first holding member 53, three spacing maintaining members 52, and three fasteners 55 are combined and assembled into a second assembly. Thereafter, the remaining four main ropes 15 are clamped between the second assembly and the second attachment portion 54b. Then, each fastener 55 is screwed into the corresponding threaded hole 54d.

[0063] In such a rope holding device 50, the spacing maintaining member 52 is interposed between adjacent main ropes 15 among the plurality of main ropes 15. Therefore, the spacing between adjacent main ropes 15 is maintained at a prescribed spacing. Thereby, it is possible to suppress the inclination of the shackle rod 25 accompanying the elevation of the car 16 and the rotation of the rope shackle 28 caused by the elongation of each main rope 15, and it is possible to suppress the generation of noise caused by the contact between the rope shackles 28.

[0064] In addition, the strength of the material constituting each first holding member 53 is higher than the strength of the material constituting each spacing maintaining member 52. Therefore, it is possible to ensure sufficient strength by each first holding member 53 to hold the plurality of main ropes 15, and to increase the degree of freedom in manufacturing each spacing maintaining member 52. Therefore, as the rope holding device 50 as a whole, it is possible to suppress a decrease in durability and to facilitate manufacturing.

[0065] In addition, the material constituting each first holding member 53 is metal, and the material constituting each spacing maintaining member 52 is resin. Therefore, it is possible to ensure sufficient strength by each first holding member 53, and it is possible to reduce the size of the whole as compared with the case where the first holding member 53 and the plurality of spacing maintaining members 52 are integrally formed using resin.

[0066] In addition, each first holding member 53 is a U-shaped plate member. Therefore, it is possible to easily manufacture each first holding member 53, and it is possible to achieve cost reduction.

[0067] In addition, the second holding member 54 is a Z-shaped plate member. Therefore, it is possible to arrange one first holding member 53 and the other first holding member 53 at different positions in the height direction.

[0068] In addition, as Figure 10 shown, the second holding member 54 may also be a U-shaped plate member. In this case, it is possible to arrange one first holding member 53 and the other first holding member 53 at the same position in the height direction.

[0069] Embodiment 2.

[0070] Next, Figure 11 is a front view showing an assembly of the first holding member and the plurality of spacing maintaining members according to Embodiment 2. Figure 12 is a cross-sectional view taken along the Figure 11 XII-XII line.

[0071] In the first holding member 53 of Embodiment 2, fitting holes 53e are provided on both sides of each first through hole 53d. That is, for each spacing maintaining member 52, two fitting holes 53e are provided corresponding thereto.

[0072] The diameter of each insertion 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 insertion hole 53e is a conical shape that expands from the bottom surface of the rope insertion groove 53c toward the outside.

[0073] Each spacer holding member 52 is insert-molded into the first gripping member 53. Each spacer holding member 52 has a pair of engaging portions 52b. The pair of engaging portions 52b are formed by injecting the resin constituting each spacer holding member 52 into the corresponding two insertion holes 53e in an uncured state and then curing it.

[0074] Other structures in Embodiment 2 are the same as those in Embodiment 1.

[0075] In such a rope gripping device, each spacer holding member 52 is insert-molded into the first gripping member 53. Therefore, at the installation site, each spacer holding member 52 will not fall off from the first gripping member 53, and the installation workability can be improved.

[0076] In addition, by using inserts during insert molding, it is possible to easily cope with the number of main ropes 15, the spacing between the main ropes 15, the diameter of the main ropes 15, etc. without increasing the types of molds.

[0077] In addition, the number, shape, position, etc. of the insertion holes 53e are not limited to the above examples.

[0078] Embodiment 3.

[0079] Next, Figure 13 is a cross-sectional view of an assembly of the first gripping member and the spacer holding member of Embodiment 3. The spacer holding member 56 of Embodiment 3 is an integrally molded product made of resin. In addition, the spacer holding member 56 has a base portion 56a and a plurality of convex portions 56b.

[0080] The shape of the base portion 56a is U-shaped. The outer surface of the base portion 56a contacts the entire inner surface of the rope insertion groove 53c. Each convex portion 56b protrudes from the base portion 56a toward the side opposite to the bottom surface of the rope insertion groove 53c. In addition, each convex portion 56b is disposed between adjacent main ropes 15 among the plurality of main ropes 15.

[0081] Separate grooves 56c are provided on both sides of each convex portion 56b. The corresponding main ropes 15 among the plurality of main ropes 15 are inserted into the separate grooves 56c.

[0082] A plurality of second through holes 56d are provided in the spacer holding member 56. The corresponding fasteners 55 pass through the second through holes 56d.

[0083] Other structures in Embodiment 3 are the same as those in Embodiment 1.

[0084] In such a rope holding device, since the spacing maintaining member 56 is an integrally molded product, the positioning accuracy of the plurality of main ropes 15 can be improved. That is, the spacing between adjacent main ropes 15 can be maintained with higher accuracy.

[0085] In addition, in Embodiment 3, it is also possible to provide a plurality of insertion holes 53e similar to those in Embodiment 2 in the first holding member 53, and integrally mold and embed the spacing maintaining member 56 in the first holding member 53.

[0086] In addition, in Embodiments 1 and 3, it is also possible to form fine irregularities on the surface of the first holding member 53, inject resin into the first holding member 53, and allow the resin to enter the irregularities, thereby bonding the plurality of spacing maintaining members 52 or the spacing maintaining member 56 to the first holding member 53.

[0087] In addition, 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 can be used as long as it is two or more. In the case where the number of main ropes 15 is other than eight, it is also possible to easily cope with it by changing the number of holes through which the fastener 55 passes, the number of spacing maintaining members 52, or the number of convex portions 56b.

[0088] In addition, in Embodiments 1 to 3, a pair of first holding members 53 are used, but the number of first holding members 53 can also be only one. That is, in Figure 3 , the plurality of main ropes 15 are arranged in two rows, but the plurality of main ropes 15 can also be arranged in one row.

[0089] In addition, in Embodiments 1 to 3, the rope holding device 50 can also be provided at the first end portion 14a of the suspension body 14, or can also be provided at both the first end portion 14a and the second end portion 14b.

[0090] In addition, the overall layout of the elevator is not limited to the Figure 1 layout. For example, the rope winding method can also be a 1:1 rope winding method.

[0091] In addition, the elevator can also be an elevator with a machine room, a machine-roomless elevator, a double-deck elevator, an elevator in a single hoistway multi-carriage system, etc. The single hoistway multi-carriage system is a method in which the upper car and the lower car arranged directly below the upper car each independently move up and down in a common hoistway.

[0092] As described above, the preferred embodiments and the like have been described in detail, but are 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.

[0093] Hereinafter, the respective aspects of the present disclosure are summarized and described as appendices.

[0094] (Supplementary Note 1)

[0095] A rope gripping device for an elevator, comprising:

[0096] A gripping body having a first gripping member, a second gripping member formed with a rope insertion groove for inserting a plurality of main ropes, and a fastening member for fastening the first gripping member to the second gripping member. The gripping body is mounted on the plurality of main ropes by clamping the plurality of main ropes between the first gripping member and the second gripping member; and

[0097] A spacing maintaining member mounted on the gripping body and disposed between adjacent main ropes among the plurality of main ropes in the rope insertion groove,

[0098] The strength of the material constituting the first gripping member is higher than the strength of the material constituting the spacing maintaining member.

[0099] (Supplementary Note 2)

[0100] The rope gripping device for an elevator according to Supplementary Note 1, wherein

[0101] The material constituting the first gripping member is metal, and the material constituting the spacing maintaining member is resin.

[0102] (Supplementary Note 3)

[0103] The rope gripping device for an elevator according to Supplementary Note 2, wherein

[0104] The first gripping member is a U-shaped plate member.

[0105] (Supplementary Note 4)

[0106] The rope gripping device for an elevator according to Supplementary Note 2 or 3, wherein

[0107] The spacing maintaining member is insert-molded in the first gripping member.

[0108] (Supplementary Note 5)

[0109] The rope gripping device for an elevator according to any one of Supplementary Notes 2 to 4, wherein

[0110] The spacing maintaining 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 toward the side opposite to the bottom surface of the rope insertion groove,

[0111] Separate grooves are formed on both sides of the protruding portion,

[0112] Insert the corresponding main rope among the multiple main ropes into each of the individual slots.

Claims

1. A rope holding device for an elevator, comprising: a holding body having a first holding member having a rope insertion groove for inserting a plurality of main ropes, a second holding member, and a fastener for fastening the first holding member to the second holding member, wherein the holding body is mounted to the plurality of main ropes by clamping the plurality of main ropes between the first holding member and the second holding member; and a spacing member mounted on the holding body and arranged in the rope insertion groove between adjacent main ropes among the plurality of main ropes, The strength of the material constituting the first holding member is higher than the strength of the material constituting the spacing member.

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

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

4. The rope gripping device for an elevator according to claim 2 or 3, wherein: The spacing member is insert-molded in the first holding member.

5. The rope gripping device for an elevator according to any one of claims 2 to 4, wherein: The spacing member is an integrally formed 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 a side opposite to the bottom surface of the rope insertion groove. Separate grooves are formed on both sides of the convex portion. A corresponding main rope among the plurality of main ropes is inserted into each of the individual grooves.

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