Elevator

Abstract

The invention provides an elevator (1) having an installation structure of a main rope terminal device (30) capable of inhibiting the size of a lifting channel from increasing. An elevator (1) is provided with: a car (3); a counterweight (4); a hoist (5); a main rope (6) wound around the hoist (5) for moving the car (3) and the counterweight (4); and a support beam (21) for supporting the hoisting machine (5) from below, the terminal part of the counterweight (4) side of the main rope (6) is fixed to the support beam (21), the terminal part of the main rope (6) is provided with a main rope terminal device (30) at least provided with an elastic body (33), the support beam (21) is internally provided with an internal space (21A), and a part of the elastic body (33) of the main rope terminal device (30) is accommodated in the internal space (21A) of the support beam (21).

Description

Technical Field

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

[0002] As a technique concerning the structure of a traction machine supporting an elevator and the mounting position of the terminal end portion of a main rope, there are, for example, Patent Document 1 and Patent Document 2.

[0003] In Patent Document 1 Figure 1 , Figure 2 Paragraph 0022 describes a structure in which the main rope end device (10) on the counterweight side is arranged at a position higher than the traction machine (7).

[0004] 10, 11, paragraphs 0027 and 0065 of Patent Document 1 describe a structure in which a second counterweight side main rope stopper (122) is arranged at a position lower than a lower beam (21) that supports a hoisting machine (7).

[0005] In Patent Document 2 Figure 1 , Figure 2 A structure is described in which one end of a main rope (10) is fixed to a main rope mounting portion (12), and the main rope mounting portion (12) is arranged on a beam (72) of a mounting mechanism (7) for mounting a traction machine (6) between guide rails (5a, 5b).

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: International Publication No. 2017 / 141438

[0009] Patent document 2: International Publication No. 02 / 079067 Summary of the invention

[0010] Technical problem to be solved by the invention

[0011] However, as described in Patent Document 1 Figure 1 , Figure 2 As shown, when the counterweight side main rope end device (10) is arranged at a position higher than the traction machine (7), it is necessary to ensure the distance from the ceiling of the hoistway, so there is a problem that the size of the hoistway in the vertical direction becomes larger.

[0012] In addition, as shown in Figures 10 and 11 of Patent Document 1, when the main rope stop part (122) on the second counterweight side is arranged at a position lower than the beam supporting the traction machine (7), that is, the lower beam (21), there is a problem that the distance between the main rope stop part (122) on the second counterweight side and the traction machine (7) becomes larger, and the size of the lifting channel in the vertical direction becomes larger.

[0013] As described in Patent Document 2 Figure 1 , Figure 2 As shown, when one end of a main rope (10) is fixed to a main rope mounting portion (12) arranged on a beam (72) of a mounting mechanism (7) for mounting a traction machine (6) between guide rails (5a, 5b), in order to avoid interference between the main rope mounting portion (12) and the traction machine (6), it is necessary to increase the distance between the main rope mounting portion (12) and the traction machine (6), thereby causing a problem of increasing the size of the lifting passage in the vertical direction.

[0014] In addition, assuming that in patent document 2, the main rope mounting portion (12) and the traction machine (6) are arranged in non-overlapping positions when viewed from above, it is necessary to offset the main rope mounting portion (12) to the wall side of the lifting passage further than the traction machine (6), thereby causing the problem of increasing the size of the lifting passage in the horizontal direction.

[0015] An object of the present invention is to provide an elevator having a mounting structure for a main rope terminal device capable of suppressing an increase in the size of a hoistway.

[0016] Technical solutions to solve problems

[0017] In order to solve the above-mentioned problems, the elevator of the present invention is characterized in that it comprises: a car; a counterweight; a traction machine; a main rope wound around the traction machine for moving the car and the counterweight; and a support beam supporting the traction machine from below, the terminal portion of the main rope on the counterweight side being fixed to the support beam, the main rope having a main rope terminal device having at least an elastic body at the terminal portion, the support beam having an internal space inside, and a part of the elastic body of the main rope terminal device being accommodated in the internal space of the support beam.

[0018] Effects of the Invention

[0019] According to the present invention, it is possible to realize an elevator having a mounting structure for a main rope terminal device capable of suppressing an increase in the size of a hoistway. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a conceptual diagram illustrating the overall schematic structure of the elevator according to the embodiment.

[0021] Figure 2 It is a top view of the elevator of the embodiment.

[0022] Figure 3 is from Figure 2 Front view viewed from direction A.

[0023] Figure 4 yes Figure 2 BB cross-section diagram.

[0024] Description of Reference Numerals

[0025] 1: Elevator

[0026] 2: Lifting channel

[0027] 3: Car

[0028] 3A: Car pulley

[0029] 4: Counterweight

[0030] 4A: Counterweight pulley

[0031] 5: Traction machine

[0032] 5A: Rope pulley

[0033] 6: Main rope

[0034] 6A: Main rope terminal on the car side

[0035] 6B: Terminal of main rope on counterweight side

[0036] 7: Car guide rail

[0037] 8: Counterweight guide rail

[0038] 20: Traction machine support structure

[0039] 21: Support beam

[0040] 21A: Inner Space

[0041] 22: Support frame

[0042] 23: Traction machine fixing seat

[0043] 24: Elastic body at the bottom of the traction machine

[0044] 30: Main rope terminal device

[0045] 31: Rod

[0046] 32: Plate

[0047] 33: Elastomer

[0048] 34: Nut

[0049] 100: Buildings

[0050] H: Height

[0051] W: Width dimension

[0052] T: thickness dimension. DETAILED DESCRIPTION

[0053] Hereinafter, embodiments of the present invention will be described using the drawings. In each of the drawings, the same or similar components are denoted by the same reference numerals, and duplicate descriptions are omitted.

[0054] Figure 1 This is a conceptual diagram illustrating the overall schematic structure of the elevator according to the embodiment.

[0055] The elevator 1 of the embodiment is installed in a hoistway 2 of a building 100. The elevator 1 has a car 3, a counterweight 4, a traction machine 5, a main rope 6, a car guide rail 7, and a counterweight guide rail 8, for example.

[0056] The car 3 is, for example, a passenger car for carrying passengers and cargo. The car 3 is connected to the main rope 6, for example, via a car pulley 3A. The counterweight 4 is a counterweight for achieving balance with the car 3. The counterweight 4 is connected to the main rope 6, for example, via a counterweight pulley 4A. The hoisting machine 5 is arranged in the upper part of the elevator passage 2. The hoisting machine 5 has a sheave 5A around which the main rope 6 is wound, and the main rope 6 is moved by rotating the sheave 5A, so that the car 3 and the counterweight 4 move with the movement of the main rope 6. The main rope 6 has a main rope terminal portion 6A on the car side and a main rope terminal portion 6B on the counterweight side, which are respectively fixed at specified positions. The car guide rail 7 is a guide rail for guiding the movement of the car 3. The counterweight guide rail 8 is a guide rail for guiding the movement of the counterweight 4. In addition, Figure 1 The rope winding method shown is just an example and is not limited to this.

[0057] Next, the specific structure of the elevator 1 of the embodiment will be described. Figure 1 The following diagram is only a conceptual diagram for explaining the overall schematic structure of the elevator 1. Figure 2 to Figure 4 The layout and Figure 1 Not strictly consistent.

[0058] Figure 2 It is a top view of the elevator of the embodiment. Figure 3 is from Figure 2 Front view viewed from direction A. Figure 4 yes Figure 2 BB cross-section diagram. In addition, Figure 3 In order to facilitate the understanding of the drawings, only two of the four main rope terminal devices 30 are shown.

[0059] like Figure 2 to Figure 4 As shown in FIG. 1 , the hoisting machine 5 is a thin hoisting machine whose thickness dimension T is smaller than the height dimension H and width dimension W of the surface on which the sheave 5A is arranged. Figure 2 As shown, it is arranged between the car 3 and the wall of the hoistway 2.

[0060] like Figure 3As shown, the hoisting machine 5 is supported by a hoisting machine support structure 20. The hoisting machine support structure 20 of this embodiment includes a support beam 21, a support frame 22, a hoisting machine fixing seat 23, and a hoisting machine lower elastic body 24.

[0061] The support beam 21 is a beam fixed between the two counterweight guide rails 8 via a support frame 22. A hoisting machine fixing seat 23 is fixed to the upper surface of the support beam 21. The hoisting machine 5 is fixed to the hoisting machine fixing seat 23 via a hoisting machine lower elastic body 24 as a vibration-proof member. Thus, the support beam 21 supports the hoisting machine 5 from below.

[0062] Next, the mounting structure of the terminal end portion of the main rope 6 of the present embodiment will be described.

[0063] like Figure 4 As shown, the counterweight-side main rope terminal portion 6B of the main rope 6 is fixed to the support beam 21 .

[0064] The main rope 6 has a main rope terminal device 30 at the terminal portion. The main rope terminal 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 that receives a load applied to the main rope 6 via the plate 32; and a nut 34 that is screwed with the rod 31 to adjust the position of the plate 32. The main rope terminal device 30 can adjust the tension of the main rope 6 by adjusting the position of the plate 32 by operating the nut 34. As the elastic body 33, for example, a spring can be used, but it is not limited thereto.

[0065] Here, the support beam 21 of the present embodiment is a hollow structure, and has an internal space 21A therein. In addition, a part of the elastic body 33 of the main rope terminal device 30 is accommodated in the internal space 21A of the support beam 21. With such a mounting structure, the height of the main rope terminal device 30 protruding from the upper surface of the support beam 21 can be reduced. Thus, even if the distance between the support beam 21 and the hoisting machine 5 is not increased, the interference between the main rope terminal device 30 and the hoisting machine 5 can be suppressed, so that the size of the hoistway can be suppressed from increasing.

[0066] In addition, if Figure 3 and Figure 4 As shown, the nut 34 is arranged at a position higher than the upper surface of the support beam 21, so that the tension of the main rope 6 can be easily adjusted during maintenance. Furthermore, since the main rope terminal device 30 is fixed to the support beam 21 that supports the traction machine 5 from below, the traction machine 5 and the main rope terminal device 30 can be maintained at the same place, and the workability is improved.

[0067] like Figure 2As shown, it is preferred that at least a portion of the main rope terminal device 30 is arranged at a position overlapping with the hoisting machine 5 when viewed from above. This can prevent the size of the hoistway in the horizontal direction from increasing. As in the present embodiment, by accommodating a portion of the elastic body 33 of the main rope terminal device 30 in the internal space 21A of the support beam 21, the height of the main rope terminal device 30 protruding from the upper surface of the support beam 21 can be reduced, so that at least a portion of the main rope terminal device 30 can be easily arranged at a position overlapping with the hoisting machine 5 when viewed from above.

[0068] like Figure 4 As shown, 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 generated by this load, it is preferable that at least half of the main rope terminal device 30 is arranged at a position on the opposite side of the sheave 5A from the center of gravity position when the hoisting machine 5 and the hoisting machine support structure 20 are integrated when viewed from above. As a result, part of the moment generated by the downward load applied to the sheave 5A is offset by the moment generated by the downward load applied to the main rope terminal device 30, so that the strength and size required for the hoisting machine support structure 20 can be reduced.

[0069] As described above, according to the mounting structure of the main rope terminal device 30 of the elevator 1 of this embodiment, it is possible to suppress the increase in the size of the elevator passage.

[0070] Although the embodiments of the present invention have been described above, the present invention is not limited to the structures described in the embodiments, and various changes can be made within the scope of the technical concept of the present invention. In addition, some or all of the structures described in the embodiments can also be combined and applied.

Claims

1. An elevator, characterized in that: have: Car; counterweight; Traction machine; a main rope wound around the hoisting machine for moving the car and the counterweight; and A support beam supports the traction machine from below, The terminal end of the main rope on the counterweight side is fixed to the support beam, The main rope has a main rope terminal device having at least an elastic body at the terminal end. The supporting beam has an internal space therein. A portion of the elastic body of the main rope terminal device is accommodated in the internal space of the support beam.

2. The elevator according to claim 1, characterized in that: The main rope terminal device includes: a rod connected to the main rope; a plate receiving the elastic body, the rod passing through the plate; the elastic body receiving the load applied to the main rope via the plate; and a nut screwed with the rod to adjust the position of the plate.

3. The elevator according to claim 2, characterized in that: The nut is arranged at a position higher than an upper surface of the support beam.

4. The elevator according to claim 1, characterized in that: The traction machine is arranged at the upper part of the lifting channel.

5. The elevator according to claim 1, characterized in that: The traction machine includes a sheave around which the main rope is wound. The hoisting machine is a thin hoisting machine having a thickness dimension smaller than a height dimension and a width dimension of a surface on which the sheave is arranged.

6. The elevator according to claim 1, characterized in that: having a counterweight guide rail for guiding the movement of the counterweight, The support beam is fixed between the two counterweight guide rails.

7. The elevator according to claim 1, characterized in that: At least a portion of the main rope terminal device is arranged at a position overlapping with the hoisting machine in a plan view.

8. The elevator according to claim 1, characterized in that: The traction machine includes a sheave around which the main rope is wound. The hoisting machine is supported by a hoisting machine support structure including at least the support beam. At least half of the main rope terminal device is arranged at a position on the opposite side of the sheave relative to the center of gravity position when the hoisting machine and the hoisting machine support structure are integrated in a plan view.

9. The elevator according to claim 8, characterized in that: having a counterweight guide rail for guiding the movement of the counterweight, The hoisting machine support structure comprises: the support beam; a support frame fixing the support beam to the counterweight guide rail; a hoisting machine fixing seat fixed to the upper surface of the support beam; and a hoisting machine lower elastic body arranged between the hoisting machine fixing seat and the hoisting machine.

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