Cage support body for elevator

Abstract

To provide a cage support body for a self-propelled elevator that is lightweight and resistant to flexure caused by the weight of the cage.SOLUTION: A cage support body 100 comprises a vertical frame 110 that is located at a rear side of a cage and is mounted rotatably around a horizontal axis relative to a trolley which is guided by a guide rail and runs vertically and horizontally, and a pair of horizontal frames 120, 130 which extend from a lower end of the vertical frame 110 in a horizontal direction (in an x-axis direction) and on which the cage is placed. Each of the horizontal frames 120, 130 comprises upper metal plates 121, 131, lower metal plates 122, 132 arranged to face each other at intervals in the vertical direction relative to the upper metal plates 121, 131, and horizontal reinforcing ribs 123a, 123b, 123c, 133a, 133b, 133c that are arranged between the upper metal plates 121, 131 and the lower metal plates 122, 132 and are provided in the horizontal direction in an orientation perpendicular to both the metal plates.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a support for a car body in an elevator, and more particularly, to a car body support for supporting a car body in a self-propelled elevator.

Background Art

[0002] In recent years, the development of self-propelled elevators has been underway. That is, it is a rope-free elevator in which a car is driven to travel by a linear motor having a primary coil arranged in a hoistway and a permanent magnet arranged on the car side. Among them, an elevator that provides a horizontal path intersecting the hoistway and allows the car to move back and forth between the hoistway and the horizontal path (hereinafter referred to as a "hoist and horizontal elevator") has attracted attention because its operation management can be made more flexible (Patent Document 1).

[0003] In a hoist and horizontal elevator, a car body is supported via a support on a carriage that is guided by guide rails laid in the hoistway and the horizontal path and travels. Since the support enables not only hoisting but also horizontal movement, it cannot adopt a configuration that supports the center of gravity of the car body in a plan view, such as a car frame that is a support in a rope-type elevator, and must have a cantilever configuration.

[0004] Although it is a self-propelled elevator that only hoists and does not include a hoist and horizontal elevator, a support having a cantilever configuration is described in Patent Document 2. In Patent Document 2, as shown in FIG. 2, a car body 11 is supported by a floor receiving member 12a made of a steel section provided in the horizontal direction.

[0005] In this case, the floor receiving member 12a is deflected by the weight of the car body 11 and the passengers, and in order to prevent a step from occurring between the landing floor and the floor of the car body at the time of landing, it is necessary to configure the floor receiving member 12a with a steel section having a considerably high rigidity. When the rigidity of the steel section is increased, the weight of the steel section, and thus the weight of the entire car, becomes heavy. Then, the linear motor is enlarged.

[0006] On the other hand, as a support structure corresponding to the floor receiving member 12, a horizontal leg (Horizontalschenlel) 11 formed of a plurality of metal sheets (Bleche) 12 welded to each other is disclosed in Patent Document 3 (page 2, lines 23 to 25, Fig. 2, fig. 3 of Patent Document 3). Further, it is described that the horizontal leg 11 can be made into a truss structure (Fachwerkstuktur) in particular (line 27 on page 2 of Patent Document 3). And in Fig. 2 of Patent Document 3, a horizontal leg 11 having a truss structure composed of a plurality of metal sheets 12 is described.

[0007] By making the horizontal leg 11 into a truss structure, it is considered that the weight can be reduced more than that of the floor receiving member 12a using the steel section in Patent Document 2.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0009] However, as shown in Fig. 2, in the truss structure of Patent Document 3 that constitutes the horizontal leg 11, the thin metal plate 12 sandwiched between the two metal plates 12 is arranged in a direction orthogonal to the length direction of the horizontal leg 11. Therefore, when supporting the cage (Aufzugskabine) 2, it is considered that, compared with the case of using a steel section, it is more likely to bend and the bending stress at the base end portion becomes larger. For this reason, in Patent Document 3, the cavity (Hohlraum) 20 at the base end portion of the horizontal leg 11 is filled with an aluminum foam (Aluminiumschaum) 21 (lines 12 to 15, page 3 of Patent Document 3, Fig. 2). However, even though it is a foam, since it is a metal, it will result in a corresponding increase in weight.

[0010] In view of the above problems, an object of the present invention is to provide a cage support that is lighter than Patent Document 2 and stronger against bending than Patent Document 3.

Means for Solving the Problems

[0011] To achieve the above object, a cage support according to the present invention is a cage support that is attached to a carriage that travels vertically and horizontally guided by guide rails laid in a hoistway and a cross passage in a self-propelled elevator and supports a cage. The cage support is located on the back side of the cage and includes a vertical frame rotatably attached to the carriage relative to a horizontal axis, and a pair of horizontal frames extending in a horizontal direction from the lower end portion of the vertical frame toward the front side of the cage and on which the cage is placed. Each of the horizontal frames includes a strip-shaped upper metal plate, a strip-shaped lower metal plate spaced apart in the vertical direction from the upper metal plate and disposed opposite to the upper metal plate, and a strip-shaped horizontal reinforcing rib provided in the horizontal direction between the upper metal plate and the lower metal plate in a posture perpendicular to both metal plates.

[0012] Further, the vertical frame includes a first metal plate parallel to the back surface of the car body, a second metal plate spaced horizontally from the first metal plate and disposed opposite to the first metal plate, and a strip-shaped vertical reinforcing rib provided vertically between the first metal plate and the second metal plate in a posture perpendicular to both metal plates.

Effect of the Invention

[0013] According to the car body support of the present invention having the above configuration, each of a pair of horizontal frames on which the car body is placed is provided with a horizontal reinforcing rib between the upper metal plate and the lower metal plate in a posture perpendicular to both metal plates in a horizontal direction from the lower end of the vertical frame toward the front side of the car body. That is, since the support (horizontal frame) that supports the car body cantilevered is composed of a combination of metal plates, weight reduction can be achieved compared to the floor receiving member 12a of Patent Document 2 composed of a sectional steel.

[0014] Further, since the horizontal reinforcing rib is provided in the horizontal direction and in a posture perpendicular to the upper metal plate and the lower metal plate, it can exhibit higher strength against the bending moment due to the dead weight of the car body than the horizontal leg 11 of Patent Document 3 in which the reinforcing rib (metal thin plate 12) is provided obliquely with respect to the horizontal direction and with respect to the two upper and lower metal thin plates.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Best Mode for Carrying Out the Invention

[0016] Hereinafter, the basket chamber support according to the present invention will be described based on embodiments with reference to the drawings. FIG. 1 is a front view showing a schematic configuration of a rope-free self-propelled elevator 10 (hereinafter simply referred to as "elevator 10") having a car 12 including a car chamber 20 supported by a car chamber support 100 according to the embodiment. In all the drawings including FIG. 1, the scales between the components are not necessarily unified.

[0017] The elevator 10 is an elevator that moves up and down and horizontally (moves horizontally) having hoistways V1, V2, V3 and a horizontal passage H1. Note that the number of hoistways is not limited to three, and may be one, two, or four or more. Also, the number of horizontal passages is not limited to one, and may be two or more.

[0018] In each of the hoistways V1, V2, V3, guide rails GV are laid vertically. In the horizontal passage, a guide rail GH is laid horizontally. Both the guide rail GV and the guide rail GH are each composed of four steel sections, and have basically the same configuration except that the laying directions are different.

[0019] At the intersections where the hoistways V1, V2, V3 and the horizontal passage H1 intersect, rotating platforms TP are respectively provided. On each of the rotating platforms TP, guide rails GT are respectively laid. The guide rail GT basically has the same configuration as the guide rails GV and GH. Each of the rotating platforms TP is rotationally driven around an axis (horizontal axis) perpendicular to the plane of the paper.

[0020] The elevator 10 has a plurality of (four in the illustrated example) cars 12. In the hoistways V1, V2, V3 and the horizontal passage H1, primary coils (not shown) are laid along the guide rails GV, GH, GT respectively. The car 12 has a permanent magnet (not shown) on the back side. The primary coil and the permanent magnet constitute a linear motor.

[0021] The car 12 is driven by the linear motor (not shown) and guided by the guide rail GV to travel vertically, and is also guided by the guide rail GH to travel horizontally.

[0022] The car 12 also changes its direction from the vertical direction to the horizontal direction and vice versa from the horizontal direction to the vertical direction. For example, the case where the car 12 traveling in the vertical direction changes its direction to the horizontal direction will be described with reference to FIG. 2.

[0023] First, the car 12 (FIG. 2(a)) is run (lowered in this example) to the rotary platform TP and stopped (FIG. 2(b)). Next, the rotary platform TP is rotated until the guide rail GT becomes horizontal (FIG. 2(c), FIG. 2(d)). Then, the car 12 is driven (run) horizontally by the linear motor (FIG. 2(e)). When the car 12 traveling horizontally changes its direction to the vertical direction, the operation is the reverse of the above. Note that the configuration using the linear motor and enabling the car to move not only vertically but also horizontally with a rope press can be realized by a known technique described in, for example, Japanese Patent Application Laid-Open No. 2017-508689, etc., and thus the detailed description thereof is omitted.

[0024] FIG. 3(a) shows a front view of the car 12, and FIG. 3(b) shows a left side view thereof. The car 12 has a carriage 14 guided by the guide rails GV (GH, GT (FIG. 1)) to travel. The carriage 14 has two roller guides 16 provided corresponding to each of the four steel sections constituting the guide rails GV, GH, and GT. Each of the roller guides 16 includes a pair of rollers 18. A permanent magnet (not shown) constituting the linear motor (not shown) is attached to the carriage 14.

[0025] The car 12 has a car body 20 having a substantially rectangular parallelepiped shape. A car door 22 is provided on the front side of the car body 20. The car body 20 is placed on and supported by a car body support 100 attached to the carriage 14.

[0026] Figure 4 shows a perspective view of the car body support 100. The car body support 100 includes a vertical frame 110 located on the back side of the car body 20 and a pair of horizontal frames 120 and 130 extending in the horizontal direction from the lower end of the vertical frame 110 toward the front side (the car door 22 side) of the car body 20. As shown in Figure 3, the car body 20 is placed on the horizontal frames 120 and 130. Here, the horizontal direction from the lower end of the vertical frame 110 toward the front side of the car body 20 is represented by the x-axis (Figure 3(b), Figure 4). Also, the vertical direction is represented by the y-axis (Figure 3(a), Figure 3(b), Figure 4).

[0027] The vertical frame 110 has a cylindrical bearing mounting hole 111. The outer ring of the rolling bearing 24 is press-fitted into the bearing mounting hole 111. A shaft 26 with one end fixed to the carriage 14 is press-fitted into the inner ring of the rolling bearing 24. With this configuration, the car body support 100 (the car 12) is rotatably attached to the carriage 14 around a horizontal axis (the axis of the rolling bearing 24, the axis of the shaft 26).

[0028] As a result, on the rotating platform TP, with respect to the carriage 14 guided by the guide rail GT and rotating together with the guide rail GT, the car body support 100 (the car 12) can maintain a horizontal posture without rotating (Figure 2(c)). The configuration of rotatably supporting the car with respect to the carriage can be realized by a known technique described in Patent Document 3, Japanese Patent Application Publication No. 2017-508689, etc.

[0029] Subsequently, the details of the car body support 100 will be described. The vertical frame 110 includes a first metal plate 112 provided in parallel with the back of the car body 20 and a second metal plate 113 spaced apart from the first metal plate 112 in the horizontal direction and arranged opposite to the first metal plate 112.

[0030] The horizontal frame 120 includes a strip-shaped upper metal plate 121 and a lower metal plate 122 spaced apart from the upper metal plate 121 in the vertical direction and arranged opposite to the upper metal plate 121.

[0031] Similar to the horizontal frame 120, the horizontal frame 130 includes a strip-shaped upper metal plate 131 and a lower metal plate 132 that is vertically spaced from the upper metal plate 131 and is disposed opposite to the upper metal plate 131.

[0032] Fig. 5 shows the cage chamber support 100 with the first metal plate 112, the second metal plate 113, the upper metal plate 121, and the upper metal plate 131 removed from the cage chamber support 100 shown in Fig. 4.

[0033] As shown in Figs. 4 and 5, the horizontal frame 120 has strip-shaped horizontal reinforcing ribs 123a, 123b, and 123c provided in the x-axis direction between the upper metal plate 121 and the lower metal plate 122. Each of the horizontal reinforcing ribs 123a, 123b, and 123c is provided in a posture perpendicular to both the upper metal plate 121 and the lower metal plate 122. The upper edge of each of the horizontal reinforcing ribs 123a, 123b, and 123c is joined to the upper metal plate 121, and the lower edge is joined to the lower metal plate 122 by welding or the like.

[0034] The other horizontal frame 130 has the same configuration as the horizontal frame 120. That is, the horizontal frame 130 includes strip-shaped horizontal reinforcing ribs 133a, 133b, and 133c provided in the x-axis direction between the upper metal plate 131 and the lower metal plate 132 and joined in a posture perpendicular to both the upper metal plate 131 and the lower metal plate 132.

[0035] The vertical frame 110 has strip-shaped vertical reinforcing ribs 114a, 114b, 114c, 114d, 114e, 114f, 114g, 114h, 114i, and 114j provided in the y-axis direction between the first metal plate 112 and the second metal plate 113. Each of the vertical reinforcing ribs 114a, 114b,..., 114i, and 114j is provided in a posture perpendicular to both the first metal plate 112 and the second metal plate 113. One edge of each of the vertical reinforcing ribs 114a, 114b,..., 114i, and 114j in the x-axis direction is joined to the first metal plate 112, and the other edge is joined to the second metal plate 113 by welding or the like.

[0036] For each of the metal plates and the reinforcing ribs that constitute the vertical frame 110 and the horizontal frames 120 and 130, for example, a steel plate is used.

[0037] In the above example, the horizontal reinforcing ribs 123a and the vertical reinforcing ribs 114a, the horizontal reinforcing ribs 123b and the vertical reinforcing ribs 114b, the horizontal reinforcing ribs 123c and the vertical reinforcing ribs 114c, the horizontal reinforcing ribs 133a and the vertical reinforcing ribs 114h, the horizontal reinforcing ribs 133b and the vertical reinforcing ribs 114i, and the horizontal reinforcing ribs 133c and the vertical reinforcing ribs 114j are integrally provided respectively. However, these horizontal reinforcing ribs and vertical reinforcing ribs may be separate. When they are separate, it is preferable to join the vertical reinforcing rib side end of the horizontal reinforcing rib and the horizontal reinforcing rib side end of the vertical reinforcing rib by welding or the like having sufficient strength.

[0038] According to the cage chamber support 100 according to the embodiment described above, each of the horizontal frames 120 and 130 on which the cage chamber 20 is placed is between the upper metal plates 121 and 131 and the lower metal plates 122 and 132, in a posture perpendicular to the upper metal plates 121 and 131 and the lower metal plates 122 and 132, and horizontal reinforcing ribs 123a, 123b, 123c, 133a, 133b, and 133c are provided in the horizontal direction from the lower end of the vertical frame 110 toward the front side of the cage chamber 20. That is, since the support (horizontal frames 120 and 130) that supports the cage chamber 20 cantilevered is composed of a combination of metal plates, weight reduction is achieved compared to the floor receiving member 12a of Patent Document 2 composed of a sectional steel.

[0039] Also, since the horizontal reinforcing ribs 123a, 123b, 123c, 133a, 133b, and 133c are provided in the above horizontal direction and in a posture perpendicular to the upper metal plates 121 and 131 and the lower metal plates 122 and 132, they exhibit higher strength against the bending moment due to the self-weight of the cage chamber than the horizontal legs 11 of Patent Document 3 in which the reinforcing ribs (metal thin plates 12) are provided obliquely in a direction orthogonal to the above horizontal direction and with respect to the two upper and lower metal thin plates 12.

[0040] A vertical frame 110 from which a pair of horizontal frames 120 and 130 extend from the lower end is also configured such that vertical reinforcing ribs 114a, …, 114j are provided between a first metal plate 112 and a second metal plate 113 in the vertical direction (vertical direction) and in a posture perpendicular to the first metal plate 112 and the second metal plate 131. Therefore, it exhibits high strength against the bending moment propagating through the horizontal frames 120 and 130.

[0041] As described above, the present invention has been described based on the embodiments. However, it goes without saying that the present invention is not limited to the above-described forms, and for example, the following forms may also be acceptable. (1) In each of the horizontal frames 120 and 130 of the above embodiment, the number of horizontal reinforcing ribs is three each. However, the number of reinforcing ribs provided between the upper metal plates 121 and 131 and the lower metal plates 122 and 132 may be one, two, or four or more. Also, the number of vertical reinforcing ribs in the vertical frame is not limited to eight, and can be any number in consideration of required strength and the like.

[0042] (2) In the above embodiment, in the horizontal frames 120 and 130, the upper and lower metal plates and the horizontal reinforcing ribs are welded and joined together (integrated). However, when the horizontal frame has a configuration in which the upper metal plate and the lower metal plate are parallel, an extruded shape material may be used for the horizontal frame, and a configuration in which the upper and lower metal plates and the horizontal reinforcing ribs are integrated may also be acceptable. Similar to the horizontal frame, the vertical frame may also be configured using an extruded shape material.

[0043] (3) In the above embodiment, an example using a car room support 100 for a self-propelled elevator configured by laying a primary coil along guide rails GV, GH, and GT and providing a permanent magnet on the back side of the car 12 has been described. However, conversely, the car room support according to the present invention is also applicable to a self-propelled elevator in which a permanent magnet is laid along a guide rail and a primary coil is provided on the back side of the car.

Industrial Applicability

[0044] The car body support according to the present invention can be suitably used, for example, as a car body support for supporting a car body in a self-propelled elevator.

Description of reference numerals

[0045] 100 Car body support 110 Vertical frame 120, 130 Horizontal frames 121, 131 Upper metal plates 122, 132 Lower metal plates 123a, 123b, 123c, 133a, 133b, 133c Horizontal reinforcing ribs

Claims

1. In a self-propelled elevator, it is a car body support that is attached to a carriage that travels vertically and horizontally guided by guide rails laid on a hoistway and a traverse path, and supports a car body, a vertical frame located on the back side of the car body and rotatably attached to the carriage relative to a horizontal axis, and a pair of horizontal frames extending in a horizontal direction from the lower end of the vertical frame toward the front side of the car body, on which the car body is placed, including, each of the horizontal frames, a strip-shaped upper metal plate, a strip-shaped lower metal plate spaced vertically from the upper metal plate and disposed opposite to the upper metal plate, and a strip-shaped horizontal reinforcing rib provided in the horizontal direction between the upper metal plate and the lower metal plate and perpendicular to both metal plates, characterized in that the car body support includes the above.

2. The vertical frame, a first metal plate parallel to the back of the car body, a second metal plate spaced horizontally from the first metal plate and disposed opposite to the first metal plate, and a strip-shaped vertical reinforcing rib provided vertically between the first metal plate and the second metal plate and perpendicular to both metal plates, characterized in that the car body support according to claim 1 includes the above.

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