Multi-car elevator

Abstract

Provided is a multi-car elevator capable of suppressing wear and damage of a main sling. The multi-car elevator includes a plurality of cars circulating in a hoistway, a fastening member provided to the car, a main sling (13A, 14A) connected to the car via the fastening member, and a hoist (5A) having a rope wheel (39a) to which the main sling (13A, 14A) is wound. The fastening member has a roller portion (29) that comes into contact with the rope wheel (39a) when the car is reversed by the hoist (5A).

Description

Technical Field

[0001] This invention relates to a multi-car elevator in which multiple cars circulate within a single elevator shaft. Background Technology

[0002] In recent years, a circulating multi-car elevator has been proposed, in which the car not only moves linearly upwards and downwards, but also reverses its direction of movement from upwards to downwards, with the direction of movement changing continuously. As a conventional example of such a multi-car elevator, there is, for instance, the multi-car elevator described in Patent Document 1.

[0003] Patent Document 1 describes a circulating loop consisting of two parallel main cables that wind around the drive wheel and driven wheel to form a loop with a rising section, a falling section, and horizontal sections, and a car rotatably mounted on a connecting beam spanning the two main cables. Patent Document 1 also describes a configuration where multiple circulating loops are formed, with the drive wheel and driven wheel supported coaxially at various positions. The car circulates in one direction by having an independent drive source for each circulating loop, and the connecting beam is connected to the main cables at a position separate from the outer periphery of the drive wheel and driven wheel.

[0004] Prior art literature

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 8-26629

[0007] However, in the technology described in Patent Document 1, when the car reverses due to the pulley, the main sling is caught between the car, the fasteners connecting the main sling, the pulley, and the winch pulley. As a result, in the technology described in Patent Document 1, the main sling is caught, which may cause wear and damage to the main sling, resulting in a reduced lifespan of the main sling. Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] This objective addresses the aforementioned issues by providing a multi-car elevator capable of suppressing wear and damage to the main suspension cables.

[0010] Solution for solving the problem

[0011] To address the aforementioned issues and achieve the objectives, a multi-car elevator comprises: multiple cars that circulate within a lifting channel; fasteners disposed within the cars; a main sling connected to the cars via the fasteners; and a winch having a sheave for winding the main slings. Furthermore, the fasteners have rollers that contact the sheaves when the cars are reversed by the winch.

[0012] Invention Effects

[0013] The multi-car elevator with the above structure can suppress the wear and damage of the main suspension cable. Attached Figure Description

[0014] Figure 1 This is a schematic structural diagram of a multi-car elevator according to the first embodiment.

[0015] Figure 2 This is a top view showing a group of cars of a multi-car elevator according to the first embodiment.

[0016] Figure 3 This is a top view showing other groups of cars in a multi-car elevator according to the first embodiment.

[0017] Figure 4 This is a cross-sectional view showing the winch unit in a multi-car elevator according to the first embodiment.

[0018] Figure 5 This is a cross-sectional view showing the winch in a multi-car elevator according to the first embodiment.

[0019] Figure 6 This is a diagram showing the state in which the fasteners of the multi-car elevator of the first embodiment are installed in the car.

[0020] Figure 7 This is a side view showing the fasteners of a multi-car elevator according to the first embodiment.

[0021] Figure 8 This is a cross-sectional view showing the fasteners of a multi-car elevator according to the first embodiment.

[0022] Figure 9 This diagram illustrates the state of the winch and fasteners of a multi-car elevator according to the first embodiment, just before the car reverses from ascending to descending movement.

[0023] Figure 10 yes Figure 9 A sectional view of the rotating body along line AA in the state of rotation.

[0024] Figure 11 It is shown in Figure 9 The diagram shows the state in which the main sling is wound up in the AA-line sectional view of the rotating body.

[0025] Figure 12 It is shown Figure 9 A cross-sectional view of the winch pulley in its current state.

[0026] Figure 13 This is a diagram showing the initial state of the fasteners climbing onto the winch sheave in a multi-car elevator according to the first embodiment.

[0027] Figure 14 This diagram shows the state in which the fasteners in the multi-car elevator of the first embodiment climb onto the winch pulley at approximately 90 degrees.

[0028] Figure 15 yes Figure 14 A cross-sectional view of the rotating body and the rope wheel in the state of rotation.

[0029] Figure 16 This is a front view showing the fasteners in a multi-car elevator according to the second embodiment.

[0030] Figure 17 This is a side view showing the fasteners in a multi-car elevator according to the second embodiment.

[0031] Figure 18 This is a schematic structural diagram of a multi-car elevator according to the third embodiment.

[0032] Figure 19 This is a cross-sectional view showing the winch unit of a multi-car elevator according to the third embodiment.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1…lifting channel, 2…mechanical room, 3A, 3B, 301A, 301B…winch units, 5A, 5B, 5C, 5D, 5E, 5F…winches, 6A, 6B, 6C, 6D, 6E, 6F…cars, 11A, 12A, 61A…fasteners, 13A, 14A…first main sling, 15D, 16D…second main sling, 17…first lower pulley, 18…second lower pulley, 19A, 19B…frame, 20…fixed shaft, 22, 23…tension support, 24…first fixed pulley, 25…second fixed pulley, 26…rotating body, 27…first pulley 28…Second pulley, 29…Roller section, 30A, 30B, 30C, 30D…Sling fixing component, 33…Main shaft, 33A…Central axis, 34…Housing, 36…Stator, 38…Bearing, 39…Rotor, 39a…Rope pulley, 39b…Bearing housing, 39c…Connecting part, 40…Rotor, 42, 43…Rope pulley groove, 44, 45…Groove, 46…Connecting component, 47…Connecting shaft, 48…Connecting bearing, 50…Retaining roller bracket, 51…Attitude retaining roller, 52…Retaining roller shaft, 55…Attitude retaining guide rail, 70…Connecting component, 100, 100A…Multi-car elevator. Detailed Implementation

[0035] The following is for reference Figures 1 to 19 A multi-car elevator according to an embodiment example will be described. It should be noted that common components are labeled with the same reference numerals in all figures.

[0036] 1. First Embodiment Example

[0037] 1-1. Structural Example of a Multi-Car Elevator

[0038] First, refer to Figures 1 to 3 The structure of the multi-car elevator of the first embodiment (hereinafter referred to as "this example") will be described.

[0039] Figure 1 This is a schematic structural diagram showing the multi-car elevator in this example. Figure 2 as well as Figure 3 This is a top view showing the multi-car elevator in this example.

[0040] Figure 1 The multi-car elevator 100 shown is an elevator in which multiple cars 6A, 6B, 6C, 6D, 6E, and 6F move within a lift channel 1 formed within the building structure.

[0041] like Figures 1 to 3 As shown, the multi-car elevator 100 includes a first winch unit 3A, a second winch unit 3B, a first lower pulley 17, a second lower pulley 18, multiple pairs (three pairs in this example) of cars 6A, 6B, 6C, 6D, 6E, and 6F, and multiple main hoists 13A, 14A, 13B, 14B, 13C, 14C, 15D, 16D, 15E, 16E, 15F, and 16F. Furthermore, the multi-car elevator 100 includes guide rails 9A, 9B, 9C, and 9D that support the cars 6A, 6B, 6C, 6D, 6E, and 6F so that they can move along the lifting direction Z.

[0042] Guide rails 9A, 9B, 9C, and 9D are erected along the lifting direction Z of the lifting channel 1. Hereinafter, the first direction X is defined as orthogonal to the lifting direction Z and parallel to the horizontal direction, and the direction orthogonal to both the lifting direction Z and the first direction X is defined as the second direction Y.

[0043] Furthermore, a machine room 2 is formed above the lifting channel 1. A first winch unit 3A and a second winch unit 3B are installed in the machine room 2. The first winch unit 3A is supported by supports 4A and 4B and is rotatable. Similarly, the second winch unit 3B is supported by supports 4C and 4D and is rotatable.

[0044] like Figure 2 As shown, the upper part of the first car 6A has an upper lifting beam 8A, a pair of guide members 10A, 10A, a first fastener 11A, and a second fastener 12A. The pair of guide members 10A, 10A are connected to the two ends of the first car 6A in a first direction X. Moreover, the pair of guide members 10A, 10A slide on guide rails 9A, 9B, 9C, 9D.

[0045] The upper lifting beam 8A extends from one end of the first car 6A in the first direction X and the second direction Y to the other end in the first direction X and the second direction Y. Connecting members 46 are provided at both ends of the upper lifting beam 8A. Furthermore, a first fastener 11A is connected to the connecting member 46 at one end of the upper lifting beam 8A via a connecting shaft 47 (described later). A second fastener 12A is connected to the connecting member 46 at the other end of the upper lifting beam 8A via the connecting shaft 47. First main lifting cables 13A and 14A are connected to the first fastener 11A, and second main lifting cables 15D and 16D are connected to the second fastener 12A. It should be noted that the detailed structure of fasteners 11A and 12A will be described later.

[0046] It should be noted that the other cars 6B, 6C, 6D, 6E, and 6F also have the same structure as the first car 6A.

[0047] like Figure 2 As shown, the fourth car 6D, which is paired with the first car 6A, is connected to the first main slings 13A and 14A via the first fastener 11D, and to the second main slings 15D and 16D via the second fastener 12D. That is, the first car 6A and the fourth car 6D are connected to the same main slings 13A, 14A, 15D, and 16D.

[0048] Here, the main slings 13A, 14A, 13B, 14B, 13C, 14C, 15D, 16D, 15E, 16E, 15F, and 16F are each composed of two slings. For example, one end of one of the two slings constituting the first main slings 13A and 14A is connected to the first fixed pulley 24 and the second fixed pulley 25 (described later) of the first fastener 11A of the first car 6A. The other end of this sling is connected to the first fixed pulley 24 and the second fixed pulley 25 of the first fastener 11D of the fourth car 6D (see reference). Figure 6 Additionally, one end of the remaining sling of the two main slings 13A and 14A is connected to the first pulley 27 and the second pulley 28 of the first fastener 11A of the first car 6A (see reference). Figure 6 The other end of the sling is connected to the first pulley 27 and the second pulley 28 of the first fastener 11D of the fourth car 6D. Thus, the main slings 13A and 14A are connected to the first fastener 11A of the first car 6A and the first fastener 11D of the fourth car 6D to form a loop.

[0049] It should be noted that the other main slings 13B, 14B, 13C, 14C, 15D, 16D, 15E, 16E, 15F, and 16F also have the same structure, so their descriptions are omitted.

[0050] like Figure 3 As shown, the second car 6B is connected to the first main slings 13B and 14B via the first fastener 11B, and to the second main slings 15E and 16E via the second fastener 12B. The fifth car 6E, which is paired with the second car 6B, is similarly connected to the first main slings 13B and 14B via the first fastener 11E, and to the second main slings 15E and 16E via the second fastener 12E. That is, the second car 6B and the fifth car 6E are connected to the same main slings 13B, 14B, 15E, and 16E.

[0051] It should be noted that the third car 6C and the sixth car 6F, like the other cars 6A, 6B, 6D, and 6E, have a first fastener and a second fastener connected to the main hoisting cable. Furthermore, the third car 6C and the sixth car 6F are connected to the same main hoisting cables 13C, 14C, 15F, and 16F.

[0052] The first winch unit 3A is disposed on one side of the first direction X, and the second winch unit 3B is disposed on the other side of the first direction X. Furthermore, the first winch unit 3A and the second winch unit 3B are disposed on both sides of the second direction Y, sandwiching the cars 6A, 6B, 6C, 6D, 6E, and 6F in the middle. The first winch unit 3A is disposed on the side of the second direction Y closer to the cars 6A, 6B, 6C, 6D, 6E, and 6F, and the second winch unit 3B is disposed on the other side of the second direction Y closer to the cars 6A, 6B, 6C, 6D, 6E, and 6F.

[0053] Furthermore, the first lower pulley 17 and the second lower pulley 18 are located at the lower part of the lifting channel 1 in the lifting direction Z. The first lower pulley 17 is positioned below the first winch unit 3A in the lower part of the lifting channel 1, and the second lower pulley 18 is positioned below the second winch unit 3B in the lower part of the lifting channel 1. That is, the first lower pulley 17 is positioned on one side of the first direction X, and the second lower pulley 18 is positioned on the other side of the first direction X. Moreover, the first lower pulley 17 is positioned on one side of the second direction Y, and the second lower pulley 18 is positioned on the other side of the second direction Y. In this example, three sets of the first lower pulley 17 and the second lower pulley 18 are configured corresponding to the number of sets of cars 6A, 6B, 6C, 6D, 6E, and 6F.

[0054] The first main lifting cables 13A, 14A, 13B, 14B, 13C, and 14C are attached to the first winch unit 3A and the first lower pulley 17. The second main lifting cables 15D, 16D, 15E, 16E, 15F, and 16F are attached to the second winch unit 3B and the second lower pulley 18.

[0055] The first winch unit 3A and the second winch unit 3B drive the cars 6A, 6B, 6C, 6D, 6E, and 6F to circulate within the lifting channel 1. Furthermore, the cars 6A, 6B, 6C, 6D, 6E, and 6F can reverse their direction of movement from upward to downward or vice versa via the first winch unit 3A and the second winch unit 3B located at the upper part of the lifting channel 1. Moreover, the cars 6A, 6B, 6C, 6D, 6E, and 6F can reverse their direction of movement from upward to downward or vice versa via the first lower pulley 17 and the second lower pulley 18 located at the lower part of the lifting channel 1.

[0056] Furthermore, the first winch unit 3A includes a first winch 5A, a second winch 5B, and a third winch 5C. The first winch 5A, the second winch 5B, and the third winch 5C are supported by identical frames 4A and 4B, enabling them to rotate. Figure 2 As shown, the first main hoisting cables 13A and 14A are wound on the first winch 5A for connecting the first car 6A and the fourth car 6D. Figure 3 As shown, the second winch 5B has first main hoisting cables 13B and 14B wound for connecting the second car 6B and the fifth car 6E. It should be noted that the third winch 5C has first main hoisting cables connected to the third car 6C and the sixth car 6D.

[0057] The second winch unit 3B includes a fourth winch 5D, a fifth winch 5E, and a sixth winch 5F. The fourth winch 5D, fifth winch 5E, and sixth winch 5F are supported by identical stands 4C and 4D, enabling them to rotate. Figure 2 As shown, the fourth winch 5D is equipped with second main slings 15D and 16D for connecting the first car 6A and the fourth car 6D. Figure 3 As shown, the fifth winch 5E has second main hoisting cables 15E and 16E for connecting the second car 6B and the fifth car 6E. It should be noted that the sixth winch 5F has second main hoisting cables connecting the third car 6C and the sixth car 6D.

[0058] 1-2. Structure of the winch unit

[0059] Next, refer to Figure 4 The detailed structure of the first winch unit 3A and the second winch unit 3B is described below. Figure 4 This is a cross-sectional view showing the first winch unit 3A. It should be noted that the first winch unit 3A and the second winch unit 3B have the same structure, therefore the first winch unit 3A will be described here.

[0060] like Figure 4 As shown, the first winch 5A, the second winch 5B, and the third winch 5C constituting the first winch unit 3A are mounted on the platforms 4A and 4B (see reference). Figure 2 The main shaft 33 is supported so that it can rotate. The first winch 5A is disposed at one end of the main shaft 33 along the axial direction, and the third winch 5C is disposed at the other end of the main shaft 33 along the axial direction. Moreover, the second winch 5B is disposed between the first winch 5A and the third winch 5C.

[0061] In this way, by using a main shaft 33 to support three winches 5A, 5B, and 5C, and arranging the three winches 5A, 5B, and 5C close to each other, the winch unit 3A can be miniaturized, thus saving space.

[0062] Furthermore, the rotors 39 of the first winch 5A and the second winch 5B (described later) are joined by a connecting member 70. Similarly, the rotors 39 of the second winch 5B and the third winch 5C are joined by the connecting member 70. Thus, the rotors 39 of the first winch 5A, the second winch 5B, and the third winch 5C rotate as a single unit. In this way, by using the connecting member 70 to join the rotors 39 of the three winches 5A, 5B, and 5C, the torque of the first winch unit 3A can be easily increased.

[0063] It should be noted that the housing 34 of the first winch 5A, the second winch 5B, and the third winch 5C (refer to...) Figure 5 They are integrally joined by a fixing member not shown. In addition, the housings 34 of the first winch 5A, the second winch 5B and the third winch 5C are fixed to the main shaft 33.

[0064] 1-3. Structure of the winch

[0065] Next, refer to Figure 5 The detailed structure of winches 5A, 5B, and 5C is explained. Figure 5 This is a cross-sectional view showing winch 5A. It should be noted that the first winch 5A, the second winch 5B, and the third winch 5C have the same structure, so the first winch 5A will be described here.

[0066] The winch 5A has a pair of housings 34, 34, multiple stators 36, bearings 38, rotors 39, and multiple rotors 40. The housing 34 is formed in a generally circular plate shape. Moreover, the pair of housings 34, 34 are arranged opposite each other with a gap between them. In addition, the housing 34 is fixed to the main shaft 33 at its radial center. Multiple stators 36 are fixed to the outer ends of the housing 34 in the radial direction.

[0067] Multiple stators 36 are fixed to opposing sides of the outer ends of a pair of housings 34, 34. Each stator 36 consists of an iron core and stator coils wound around the iron core. Furthermore, the multiple stators 36 are arranged in a ring along the circumference of the housings 34.

[0068] The rotor 39 is disposed between a pair of housings 34, 34. The rotor 39 is formed in a generally circular plate shape. The rotor 39 has a pulley 39a, a bearing housing 39b, and a connecting part 39c.

[0069] A bearing housing 39b is formed at the center of the rotor 39 in the radial direction. The bearing housing 39b is cylindrical. A bearing 38 is provided on the inner wall of the bearing housing 39b. Furthermore, the rotor 39 is rotatably supported on the main shaft 33 by means of the bearing 38.

[0070] The connecting portion 39c protrudes substantially perpendicularly from the outer peripheral surface of the bearing housing 39b. The connecting portion 39c is formed in a substantially circular plate shape. The connecting portion 39c is disposed between a pair of housings 34, 34. The end of the connecting portion 39c on the side opposite to the bearing housing 39b, i.e., the radially outer end, is positioned radially outer than the plurality of stators 36 fixed to the housing 34. Furthermore, the radially outer end of the connecting portion 39c protrudes radially outward from the pair of housings 34, 34. A pulley 39a is formed at the radially outer end of this connecting portion 39c.

[0071] Rope grooves 42 and 43 for the main sling to be wound are formed on the outer peripheral surface of the rope pulley 39a. Here, the radius from the central axis 33A of the main shaft 33 to the outer peripheral surface of the rope pulley 39a is set as the length R1.

[0072] Furthermore, the inner surface of the pulley 39a in the rotor 39, i.e., the inner circumferential surface, in the radial direction faces the outer edge of the housing 34 and the plurality of stators 36 fixed to the housing 34. Moreover, a plurality of rotors 40 are fixed to the inner circumferential surface of the pulley 39a.

[0073] Multiple rotors 40 are disposed on both sides of the connecting portion 39c on the inner circumferential surface of the pulley 39a. The multiple rotors 40 are composed of magnets. The multiple rotors 40 are fixed at predetermined intervals along the circumference of the pulley 39a. The multiple rotors 40 have alternating N and S poles arranged along the circumference of the pulley 39a. Furthermore, the multiple rotors 40 are supported on the rotor 39a and are positioned opposite the multiple stators 36 fixed to the housing 34 with a small gap between them.

[0074] Thus, according to the winch 5A in this example, the radial length of the rotor 39, which is equipped with the pulley 39a, can be longer than the housing 34, allowing for a larger torque with a thin profile. Furthermore, the connecting portion 39c of the rotor 39 can be sandwiched in the middle to form two motors.

[0075] 1-4. Structure of Fasteners

[0076] Next, refer to Figures 6 to 8 The structures of fasteners 11A, 11B, 11D, 11E, 12A, 12A, 12D, and 12E will be described. It should be noted that fasteners 11A, 11B, 11D, 11E, 12A, 12A, 12D, and 12E have the same structure; therefore, in the following description, the structure of the first fastener 11A of the first car 6A will be described. Figure 6 This diagram shows the state in which fastener 11A is installed in the first car 6A. Figure 7 This is a side view of fastener 11A. Figure 8 This is a cross-sectional view of fastener 11A.

[0077] like Figures 6 to 8 As shown, fastener 11A has frames 19A and 19B, a fixed shaft 20, a first tension support 22, a second tension support 23, a first fixed pulley 24, a second fixed pulley 25, and a rotating body 26. Additionally, fastener 11A has multiple sling fasteners 30A, 30B, 30C, and 30D.

[0078] Frames 19A and 19B are generally flat. Furthermore, frames 19A and 19B are positioned opposite each other at a distance. A fixed shaft 20, a first tension support 22, and a second tension support 23 are fixed to frames 19A and 19B in a manner that connects them. The first tension support 22 is disposed at one end of frames 19A and 19B along their length, and the second tension support 23 is disposed at the other end of frames 19A and 19B along their length.

[0079] Additionally, a fixed shaft 20 is fixed to the end of the first tension support portion 22 in frames 19A and 19B. A first fixed pulley 24 and a second fixed pulley 25 are rotatable or fixed at the fixed shaft 20. The first fixed pulley 24 is disposed at one end of the fixed shaft 20, and the second fixed pulley 25 is disposed at the other end of the fixed shaft 20.

[0080] The end of the main sling 13A is wound around the first fixed pulley 24. Furthermore, the end of the main sling 13A wound around the first fixed pulley 24 is fixed to the first tension support portion 22 by means of a sling fastener 30A. The end of the main sling 14A is wound around the second fixed pulley 25. Furthermore, the end of the main sling 14A wound around the second fixed pulley 25 is fixed to the first tension support portion 22 by means of a sling fastener 30B.

[0081] Furthermore, a connecting shaft 47 provided on the car 6A is fixed to the end of the first tension support portion 22 in frames 19A and 19B. The connecting shaft 47 also passes through a pair of frames 19A and 19B. Moreover, the connecting shaft 47 is arranged such that its axial direction is parallel to the axial direction of the fixed shaft 20.

[0082] like Figure 6 As shown, a connecting bearing 48 is provided within the connecting member 46. The connecting shaft 47 is supported by the connecting bearing 48 and is rotatable. Furthermore, the connecting shaft 47 protrudes from the connecting member 46 toward the outside of the car 6A. More specifically, as... Figure 2 as well as Figure 3 As shown, the connecting shaft 47 protrudes from the car 6A along the second direction Y toward the winch units 3A and 3B. It should be noted that the length of the connecting shaft 47 varies accordingly with the length of the winches 5A, 5B, 5C, 5D, 5E, and 5F that are used to wind the main hoisting cables of the cars 6A, 6B, 6C, 6D, 6E, and 6F.

[0083] like Figure 6 As shown, the rotating body 26 is rotatably mounted on the end of the connecting shaft 47 within frames 19A and 19B. The rotating body 26 has a first pulley 27, a second pulley 28, and a roller portion 29. The first pulley 27 is formed at one axial end of the rotating body 26, and the second pulley 28 is formed at the other axial end of the rotating body 26. Furthermore, the first pulley 27 is opposite to the first fixed pulley 24, and the second pulley 28 is opposite to the second fixed pulley 25.

[0084] A groove 44 for winding the main sling 13A is formed in the first pulley 27. Similarly, a groove 45 for winding the main sling 14A is formed in the second pulley 28. The end of the main sling 13A is wound on the first pulley 27. Moreover, the end of the main sling 13A wound on the first pulley 27 is fixed to the second tension support portion 23 by means of a sling fastener 30C. The end of the main sling 14A is wound on the second pulley 28. Moreover, the end of the main sling 14A wound on the second pulley 28 is fixed to the second tension support portion 23 by means of a sling fastener 30D.

[0085] A roller portion 29 is formed between the first pulley 27 and the second pulley 28. The roller portion 29 is generally cylindrical. The radius r1 of the roller portion 29 is set to be larger than the radius r2 of the first pulley 27 and the second pulley 28 (see reference). Figure 10 Large. Additionally, such as... Figure 8 As shown, the outer surface of the roller 29 and the outer peripheral surface of the first fixed pulley 24 and the second fixed pulley 25 in the radial direction extends outward from one side of the frame 19A and 19B (the winch 5A side).

[0086] 1-5. Examples of the car's reversing motion

[0087] Next, refer to Figures 9 to 15 An example of the reversing operation of the car 6A will be explained. It should be noted that in the following explanation, an example of the operation in which the car 6A reverses from upward movement to downward movement in the upper part of the lifting channel 1 will be explained.

[0088] Figure 9 This diagram shows the state of the winch 5A and fastener 11A before the car 6A reverses from moving upward to moving downward. Figure 10 yes Figure 9 The AA-line sectional view of the rotating body 26 shown. Figure 11 It is shown in Figure 9 The diagram shows the state in which the main slings 13A and 14A are wound up in the sectional view along line AA of the rotating body 26. Figure 12 It is shown Figure 9 A cross-sectional view of the sheave 39a of the winch 5A in its current state.

[0089] like Figure 9 As shown, if the car 6A approaches the winch 5A, which is a reversing part, the ends of the roller portion 29 in the fastener 11A and the first fixed pulley 24 and the second fixed pulley 25 extending outwards face the outer peripheral surface of the winch 5A.

[0090] As described above, the radius r1 of roller 29 is set to be larger than the radius r2 of the first pulley 27 and the second pulley 28. Therefore, as Figure 10 as well as Figure 11 As shown, the outer circumferential surface of the roller 29 is closer to the winch 5A than the outer circumferential surfaces of the first pulley 27 and the second pulley 28. It should be noted that, in the state before the roller 29 contacts the sheave 39a of the winch 5A, as... Figure 11 As shown, the other ends of the main slings 13A and 14A are housed in the groove 44 of the first pulley 27 and the groove 45 of the second pulley 28. Additionally, as... Figure 12 As shown, one end of the main slings 13A and 14A is wound around the sheave grooves 42 and 43 of the sheave 39a.

[0091] Figure 13 This is a diagram showing the initial state of fastener 11A climbing onto the sheave 39a of winch 5A.

[0092] like Figure 13 As shown, the roller portion 29 of fastener 11A contacts the outer peripheral surface of the sheave 39a in winch 5A. Furthermore, the rotating body 26 rotates along the outer peripheral surface of the sheave 39a. It should be noted that... Figure 13 In the state shown, the contact force between the rotating body 26 and the outer circumferential surface of the sheave 39a is small. This contact force is mainly generated by the weight of the car 6A, etc., via the connecting shaft 47.

[0093] Figure 14 The diagram shows the fastener 11A climbing up the rope pulley 39a of the winch 5A at approximately 90 degrees. Figure 15 yes Figure 14 A cross-sectional view of the rotating body 26 and the rope wheel 39a in the state of rotation.

[0094] like Figure 14 As shown, if the roller portion 29 of the fastener 11A reaches near the top of the sheave 39a, the main slings 13A and 14A are clamped between the grooves 44 and 45 of the first pulley 27 and the second pulley 28 and the sheave grooves 42 and 43 of the sheave 39a. At this time, the contact force of the rotating body 26 on the sheave 39a becomes approximately maximum.

[0095] Here, as described above, the radius r1 of roller 29 is set to be larger than the radius r2 of the first pulley 27 and the second pulley 28. Therefore, as Figure 15 As shown, roller 29 climbs onto the outer circumferential surface of sheave 39a. Furthermore, due to the difference in radius between roller 29 and roller 28 (r1 > r2), gaps are created between the first pulley 27 and the second pulley 28 and the outer circumferential surface of sheave 39a. Consequently, gaps also arise between the grooves 44 and 45 of the first pulley 27 and the second pulley 28 and the sheave grooves 42 and 43 of sheave 39a. As a result, the main slings 13A and 14A move from the grooves 44 and 45 of the first pulley 27 and the second pulley 28 to the sheave grooves 42 and 43 of sheave 39a.

[0096] In this way, the main slings 13A and 14A will not be clamped or compressed by the first pulley 27 and the second pulley 28 of the rotating body 26 and the sheave grooves 42 and 43 of the rope sheave 39a. This suppresses wear and damage to the main slings 13A and 14A, preventing a reduction in their product lifespan. Consequently, the reliability of the multi-car elevator 100 is improved.

[0097] In this example, the roller portion 29 is described as being positioned between the first pulley 27 and the second pulley 28, but this is not a limitation. For example, the roller portion 29 may also be formed at a position closer to the frames 19A and 19B than the first pulley 27 and the second pulley 28. It should be noted that, in order to ensure that the roller portion 29 contacts the outer peripheral surface of the rope sheave 39a in a balanced manner, it is preferable to position it symmetrically with respect to the first pulley 27 and the second pulley 28.

[0098] Furthermore, an example of connecting fastener 11A to two main slings 13A and 14A and providing two pulleys has been described, but this is not a limitation. The number of main slings connected to one fastener can be three or more.

[0099] 2. Second Implementation Example

[0100] Next, refer to Figure 16 as well as Figure 17 The second embodiment of the multi-car elevator will be described.

[0101] Figure 16 This is a front view showing the fasteners in a multi-car elevator according to the second embodiment. Figure 17 This is a side view showing the fastener.

[0102] The difference between the multi-car elevator of the second embodiment and the multi-car elevator 100 of the first embodiment lies in the structure of the fasteners. Therefore, the structure of the fasteners will be described here, and the same reference numerals will be used to mark the parts that are common to the multi-car elevator 100 of the first embodiment, and repeated descriptions will be omitted.

[0103] like Figure 16 as well as Figure 17 As shown, fastener 61A has frames 19A and 19B, a fixed shaft 20, a first tension support 22, a second tension support 23, a first fixed pulley 24, a second fixed pulley 25, and a rotating body 26. Additionally, fastener 11A has multiple sling fasteners 30A, 30B, 30C, and 30D. A first pulley 27, a second pulley 28, and a roller portion 29 are formed on the rotating body 26.

[0104] like Figure 16 As shown, the fastener 61A generates a couple under the action of the car 6A's own weight and the tension of the main slings 13A and 14A through the connecting shaft 47, which may cause the fastener 61A to be unstable.

[0105] In contrast, the fastener 61A of the second embodiment has a retaining roller bracket 50, a posture retaining roller 51, and a retaining roller shaft 52. The retaining roller bracket 50 is fixed to the connecting shaft 47. The retaining roller bracket 50 is disposed in the car 6A and positioned between the connecting member 46 and the frames 19A and 19B of the fastener 61A.

[0106] The retaining roller bracket 50 supports the attitude retaining roller 51 for rotation via the retaining roller shaft 52. The attitude retaining roller 51 protrudes outward from the frames 19A and 19B of the fastener 61A. This attitude retaining roller 51 contacts the attitude retaining guide rail 55, which is erected within the lifting channel 1. The reaction force generated when the attitude retaining roller 51 contacts the attitude retaining guide rail 55 is transmitted to the fastener 61A via the connecting shaft 47. This stabilizes the attitude of the fastener 61A and improves the reliability of the multi-car elevator.

[0107] The other structures are the same as those of the multi-car elevator 100 of the first embodiment, so their description is omitted. The same effects as those of the multi-car elevator 100 of the first embodiment can be achieved by using a multi-car elevator with this fastener 61A.

[0108] 3. Third Implementation Example

[0109] Next, refer to Figure 18 as well as Figure 19 The multi-car elevator of the third embodiment will be described.

[0110] Figure 18 This is a schematic structural diagram of a multi-car elevator according to the third embodiment. Figure 19 This is a cross-sectional view showing the winch unit of a multi-car elevator according to the third embodiment.

[0111] The difference between the multi-car elevator 100A of the third embodiment and the multi-car elevator 100 of the first embodiment lies in the structure of the winch unit. Therefore, the winch unit will be described here, and the same reference numerals will be used to mark the parts that are common to the multi-car elevator 100 of the first embodiment, and repeated descriptions will be omitted.

[0112] like Figure 18 As shown, the multi-car elevator 100A includes multiple cars 6A, 6B, 6C, 6D, 6F, 6E, a first winch unit 301A, and a second winch unit 301B. Other structures are the same as those in the multi-car elevator 100 of the first embodiment, and therefore their description is omitted. It should be noted that the first winch unit 301A and the second winch unit 301B have the same structure; therefore, the first winch unit 301A will be described here.

[0113] like Figure 19 As shown, the first winch unit 301A includes a first winch 5A, a second winch 5B, and a third winch 5C. Furthermore, the first winch 5A, the second winch 5B, and the third winch 5C are supported by a main shaft 33 and are rotatable.

[0114] In the winch unit 301A of the third embodiment, the rotors 39 of the first winch 5A, the second winch 5B, and the third winch 5C are not coupled. Therefore, the rotors 39 of the first winch 5A, the second winch 5B, and the third winch 5C rotate independently. This allows the operation of the first car 6A and the fourth car 6D paired with it to be different from the operations of the other cars 6B, 6C, 6E, and 6F. Similarly, the second car 6B and the fifth car 6E paired with it are set to operate differently from the operations of the other cars 6A, 6C, 6D, and 6F. Furthermore, the third car 6C and the sixth car 6F paired with it are set to operate differently from the operations of the other cars 6A, 6B, 6D, and 6E.

[0115] The other structures are the same as those of the multi-car elevator 100 of the first embodiment, so their description is omitted. With this structure, the multi-car elevator 100A can achieve the same effects as the multi-car elevator 100 of the first embodiment described above.

[0116] It should be noted that the present invention is not limited to the embodiments described above and shown in the accompanying drawings, and various modifications can be made without departing from the spirit of the invention as described in the technical solution.

[0117] Furthermore, while this description refers to a multi-car elevator in which multiple cars circulate in one direction, it is not limited to this. For example, it can also be applied to a multi-car elevator configured such that multiple cars can move in both upward and downward directions within the elevator shaft 1.

[0118] Furthermore, the number of cars installed in the multi-car elevator 100 is not limited to six; the number of cars can be five or fewer, or seven or more. Moreover, while an example of two cars connected via a main hoist has been described, it is not a limitation; a single car can also be connected to a counterweight via a main hoist. That is, for example, it is also possible to connect... Figure 1 The fourth car 6D, which is paired with the first car 6A shown, is set as a counterweight.

[0119] It should be noted that the terms "parallel" and "orthogonal" are used in this specification, but they do not mean that they are only strictly "parallel" and "orthogonal". They can also be "approximately parallel" or "approximately orthogonal" in a range that includes "parallel" and "orthogonal" and is within the range that can perform their functions.

Claims

1. A multi-car elevator, wherein, The multi-car elevator has the following features: Multiple cars circulate within the lifting channel; Fasteners, which are provided in the car; The main sling is connected to the car via the fasteners; as well as A winch having a pulley for winding the main sling. The fastener has: The roller portion, which contacts the sheave when the car is reversed by the winch; and The pulley is used for winding the main sling. The radius of the roller is set to be larger than the radius of the pulley. The car has: A connecting shaft is provided for mounting the pulley and the roller; and A connecting member that supports the connecting shaft so that it can rotate. An attitude-holding roller is provided on the fastener to maintain the attitude of the fastener.

2. The multi-car elevator according to claim 1, wherein, The connecting shaft is used to fix and retain the roller bracket. The attitude holding roller is supported by the holding roller bracket to enable rotation. An attitude-maintaining guide rail is erected in the lifting channel to contact the attitude-maintaining roller.

3. A multi-car elevator, wherein, The multi-car elevator has the following features: Multiple cars circulate within the lifting channel; Fasteners, which are provided in the car; The main sling is connected to the car via the fasteners; as well as A winch having a pulley for winding the main sling. The fastener has: The roller section contacts the sheave when the car is reversed by the winch; as well as Multiple pulleys are used for winding the main sling. Multiple main slings are connected to the fasteners. The roller is disposed between the plurality of pulleys.

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