Elevator

Abstract

To provide an elevator 1 which is provided with a fitting structure of a main rope terminal device 30 which can restrain hoistway dimension from being enlarged.SOLUTION: An elevator 1 includes a basket 3, a balancing weight 4, a winch 5, a main rope 6 which is wounded around the winch 5 by moving the basket 3 and the balancing weight 4 and a support beam 21 which supports the winch 5 from a down ward direction. The main rope 6 is configured so that an end edge part of the balancing weight 4 side is fixed to the support beam 21 and the main rope 6 includes a main rope terminal device 30 which includes at least an elastomer 33 on the end edge part. The support beam 21 includes internal space 21A in inside and one part of the elastomer 33 of the main rope terminal device 30 is stored in the internal space 21A of the support beam 21.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an elevator. [Background technology]

[0002] Techniques relating to the structure for supporting an elevator hoist and the attachment position of the end of the main rope are described in, for example, Patent Documents 1 and 2.

[0003] FIG. 1, FIG. 2, and paragraph 0022 of Patent Document 1 show a sinker-side main rope end device (10) disposed at a position higher than the winch (7).

[0004] Furthermore, Figures 10 and 11 and paragraphs 0027 and 0065 of Patent Document 1 describe a second weight side main rope fastening portion (122) that is positioned lower than the lower beam (21), which is a beam that supports the hoist (7).

[0005] Figs. 1 and 2 of Patent Document 2 show that one end of a main rope (10) is fixed to a main rope attachment part (12) arranged on a beam (72) of an attachment mechanism (7) for attaching a hoist (6) between guide rails (5a, 5b). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] International Publication No. 2017 / 141438 [Patent Document 2] WO 02 / 079067 Summary of the Invention [Problem to be solved by the invention]

[0007] However, when the weight-side main rope end device (10) is positioned higher than the hoist (7), as in Figures 1 and 2 of Patent Document 1, it is necessary to secure a distance between the ceiling of the hoistway, which results in a problem that the vertical dimensions of the hoistway become large.

[0008] Furthermore, as shown in Figures 10 and 11 of Patent Document 1, if the second weight side main rope fastening portion (122) is positioned at a position lower than the lower beam (21), which is a beam supporting the hoisting machine (7), the distance between the second weight side main rope fastening portion (122) and the hoisting machine (7) becomes large, resulting in a problem of an increase in the vertical shaft dimension.

[0009] As shown in Figures 1 and 2 of Patent Document 2, when one end of the main rope (10) is fixed to the main rope attachment part (12) arranged on the beam (72) of the attachment mechanism (7) for attaching the hoisting machine (6) between the guide rails (5a, 5b), it is necessary to increase the distance between the main rope attachment part (12) and the hoisting machine (6) so that the main rope attachment part (12) does not interfere with the hoisting machine (6), which poses a problem of increasing the vertical dimension of the elevator shaft.

[0010] Furthermore, if, as in Patent Document 2, the main rope mounting part (12) and the hoist (6) were to be positioned so as not to overlap when viewed in a plane, the main rope mounting part (12) would need to be shifted toward the wall of the hoistway relative to the hoistway (6), resulting in a problem of increased horizontal hoistway dimensions.

[0011] The problem to be solved by the present invention is to provide an elevator equipped with a mounting structure for a main rope termination device that can suppress an increase in the dimensions of the elevator shaft. [Means for solving the problem]

[0012] In order to solve the above-mentioned problems, the elevator of the present invention comprises a car, a counterweight, a hoist, a main rope that moves the car and the counterweight and is wound around the hoist, and a support beam that supports the hoist from below, wherein the main rope has an end portion on the counterweight side fixed to the support beam, the main rope has a main rope termination device having at least an elastic body at the end portion, the support beam has an internal space inside, and a portion of the elastic body of the main rope termination device is stored in the internal space of the support beam. Effect of the Invention

[0013] According to the present invention, it is possible to realize an elevator equipped with a mounting structure for a main rope termination device that can suppress an increase in the dimensions of the elevator shaft. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a conceptual diagram illustrating the overall schematic configuration of an elevator according to an embodiment. [Diagram 2] FIG. [Diagram 3] FIG. 3 is a front view seen from direction A in FIG. 2. [Figure 4] Cross-sectional view of FIG. 2 taken along line B-B. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each drawing, the same or similar components are designated by the same reference numerals, and duplicated explanations will be omitted.

[0016] FIG. 1 is a conceptual diagram for explaining the overall schematic configuration of an elevator according to an embodiment.

[0017] The elevator 1 of the embodiment is installed in a hoistway 2 of a building 100. The elevator 1 has, for example, a car 3, a counterweight 4, a hoist 5, a main rope 6, a car guide rail 7, and a counterweight guide rail 8.

[0018] The car 3 is a passenger car on which passengers and baggage are carried, for example. The car 3 is connected to the main ropes 6 via, for example, a car pulley 3A. The counterweight 4 is a weight for balancing the car 3. The counterweight 4 is connected to the main ropes 6 via, for example, a counterweight pulley 4A. The hoist 5 is disposed at the upper part of the hoistway 2. The hoist 5 has a sheave 5A around which the main ropes 6 are wound, and the car 3 and the counterweight 4 are moved in accordance with the movement of the main ropes 6 by rotating the sheave 5A. The main ropes 6 have a car-side main rope end portion 6A and a counterweight-side main rope end portion 6B, each of which is fixed at a predetermined position. The car guide rail 7 is a guide rail that guides the movement of the car 3. The counterweight guide rail 8 is a guide rail that guides the movement of the counterweight 4. The roping method shown in FIG. 1 is merely an example and is not limited to this.

[0019] Next, a specific configuration of the elevator 1 of the embodiment will be described. Note that, since Fig. 1 is merely a conceptual diagram for explaining the overall schematic configuration of the elevator 1, the layouts in Figs. 2 to 4 shown below do not strictly match Fig. 1.

[0020] Fig. 2 is a top view of the elevator of the embodiment. Fig. 3 is a front view seen from the direction A in Fig. 2. Fig. 4 is a cross-sectional view taken along line B-B in Fig. 2. In Fig. 3, only two of the four main rope termination devices 30 are shown in order to make the drawing easier to see.

[0021] As shown in Figures 2 to 4, the hoist 5 is a thin hoist having a thickness dimension T that is smaller than the height dimension H and width dimension W of the surface on which the sheave 5A is arranged, and is arranged between the car 3 and the wall of the elevator shaft 2, as shown in Figure 2.

[0022] As shown in Fig. 3, the hoist 5 is supported by a hoist support structure 20. The hoist support structure 20 of this embodiment has a support beam 21, a support bracket 22, a hoist fixing base 23, and a hoist lower elastic body 24.

[0023] The support beam 21 is a beam fixed between two counterweight guide rails 8 via a support bracket 22. A hoisting machine fixing base 23 is fixed to the upper surface of the support beam 21. The hoisting machine 5 is fixed onto the hoisting machine fixing base 23 via a hoisting machine lower elastic body 24, which is a vibration-proof member. In this way, the support beam 21 supports the hoisting machine 5 from below.

[0024] Next, a mounting structure at the terminal end of the main rope 6 in this embodiment will be described.

[0025] As shown in FIG. 4, the main rope 6 has a counterweight-side main rope end portion 6B fixed to a support beam 21.

[0026] The main rope 6 has a main rope termination device 30 at its end. The main rope termination device 30 has a rod 31 connected to the main rope 6, a plate 32 through which the rod 31 passes and which receives an elastic body 33, the elastic body 33 which receives the load applied to the main rope 6 via the plate 32, and a nut 34 which is screwed onto the rod 31 and adjusts the position of the plate 32. The main rope termination device 30 can adjust the tension of the main rope 6 by adjusting the position of the plate 32 by operating the nut 34. The elastic body 33 can be, for example, a spring, but is not limited to this.

[0027] Here, the support beam 21 in this embodiment has a hollow structure and has an internal space 21A therein. A part of the elastic body 33 of the main rope termination device 30 is stored in the internal space 21A of the support beam 21. With this mounting structure, the height at which the main rope termination device 30 protrudes from the upper surface of the support beam 21 can be reduced. This makes it possible to suppress interference between the main rope termination device 30 and the hoisting machine 5 without increasing the distance between the support beam 21 and the hoisting machine 5, thereby suppressing an increase in the hoistway dimensions.

[0028] 3 and 4, the nut 34 is disposed at a position higher than the upper surface of the support beam 21, so that the tension of the main ropes 6 can be easily adjusted during maintenance. Furthermore, since the main rope termination device 30 is fixed to the support beam 21 that supports the hoisting machine 5 from below, the hoisting machine 5 and the main rope termination device 30 can be maintained in the same place, improving workability.

[0029] As shown in Fig. 2, it is desirable that the main rope termination device 30 is disposed at a position where at least a portion thereof overlaps with the hoisting machine 5 in a plan view. This makes it possible to prevent the horizontal dimensions of the hoistway from becoming large. As in this embodiment, a portion of the elastic body 33 of the main rope termination device 30 is stored in the internal space 21A of the support beam 21, so that the height at which the main rope termination device 30 protrudes from the upper surface of the support beam 21 can be reduced, making it easy to dispose the main rope termination device 30 at a position where at least a portion thereof overlaps with the hoisting machine 5 in a plan view.

[0030] As shown in Fig. 4, a downward load is applied to the sheave 5A of the hoisting machine 5 via the main rope 6. In order to reduce the moment caused by this load, it is desirable that at least half of the main rope termination devices 30 are disposed on the opposite side to the sheave 5A from the center of gravity when the hoisting machine 5 and the hoisting machine support structure 20 are integrated, in a plan view. In this way, part of the moment caused by the downward load applied to the sheave 5A is offset by the moment caused by the downward load applied to the main rope termination device 30, so that the strength and size required for the hoisting machine support structure 20 can be reduced.

[0031] As described above, according to the mounting structure of the main rope termination device 30 of the elevator 1 of this embodiment, it is possible to prevent the hoistway dimensions from becoming large.

[0032] Although the embodiment of the present invention has been described above, the present invention is not limited to the configurations described in the embodiment, and various modifications are possible within the scope of the technical concept of the present invention. In addition, some or all of the configurations described in the embodiment may be combined and applied. [Explanation of symbols]

[0033] 1: Elevator 2: Lift 3: Basket 3A: Cage pulley 4: Counterweight 4A: Counterweight pulley 5:Hoisting machine 5A: Sheave 6: Main rope 6A: Car side main rope end 6B: End of main rope on counterweight side 7: Basket guide rail 8: Counterweight guide rail 20: Hoisting machine support structure 21: Support beam 21A: Internal space 22: Support bracket 23:Hoisting machine fixing base 24: Lower elastic body of the hoist 30: Main rope termination device 31: Rod 32: Plate 33: Elastic body 34: Nut 100: Building H: Height dimension W: Width dimension T: Thickness dimension

Claims

1. Basket, A counterweight, A hoisting machine; a main rope that moves the cage and the counterweight and is wound around the hoist; A support beam that supports the hoist from below, The main rope has an end portion on the counterweight side fixed to the support beam, The main rope has a main rope termination device having at least an elastic body at the terminal end, The support beam has an internal space therein, An elevator characterized in that a portion of the elastic body of the main rope termination device is housed in the internal space of the support beam.

2. In claim 1, An elevator characterized in that the main rope termination device includes a rod connected to the main rope, a plate through which the rod passes and which receives the elastic body, the elastic body which receives the load applied to the main rope via the plate, and a nut screwed onto the rod to adjust the position of the plate.

3. In claim 2, An elevator characterized in that the nut is positioned at a position higher than the upper surface of the support beam.

4. In claim 1, The elevator is characterized in that the hoisting machine is disposed at an upper portion of the hoistway.

5. In claim 1, The hoisting machine has a sheave around which the main rope is wound, The elevator is characterized in that the hoist is a thin hoist having a thickness dimension smaller than the height and width dimensions of the surface on which the sheaves are arranged.

6. In claim 1, A counterweight guide rail for guiding the movement of the counterweight is provided, An elevator characterized in that the support beam is fixed between two of the counterweight guide rails.

7. In claim 1, An elevator characterized in that, when viewed in a plan view, the main rope termination device is arranged in a position where at least a portion of the main rope termination device overlaps with the hoist.

8. In claim 1, The hoisting machine has a sheave around which the main rope is wound, The hoist is supported by a hoist support structure including at least the support beam, An elevator characterized in that, in a plan view, at least half of the main rope termination devices are disposed on the opposite side to the sheave than the center of gravity of the hoist and the hoist support structure when integrated together.

9. In claim 8, A counterweight guide rail for guiding the movement of the counterweight is provided, The elevator, characterized in that the hoist support structure includes the support beam, a support bracket that fixes the support beam to the counterweight guide rail, a hoist fixing base fixed to the upper surface of the support beam, and a hoist lower elastic body arranged between the hoist fixing base and the hoist.

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