Elevator cab support

Abstract

To provide a support for a car in a self-propelled elevator, which is lightweight and resistant to bending caused by the car's own weight. [Solution] The cage support 100 includes a vertical frame 110 located on the rear side of the cage and attached so as to be freely rotatable around a horizontal axis relative to the cart that runs vertically and horizontally guided by a guide rail, and a pair of horizontal frames 120, 130 extending horizontally (x-axis direction) from the lower end of the vertical frame 110 and on which the cage is placed, and each of the horizontal frames 120, 130 includes an upper metal plate 121, 131, a lower metal plate 122, 132 arranged opposite the upper metal plate 121, 131 with a gap in the vertical direction, and horizontal reinforcing ribs 123a, b, c, 133a, b, c located between the upper metal plate 121, 131 and the lower metal plate 122, 132 and arranged in the horizontal direction in an orientation perpendicular to both metal plates.

Description

[Technical field]

[0001] The present invention relates to a cab support in an elevator, and more particularly to a cab support that supports a cab in a self-propelled elevator. [Background technology]

[0002] In recent years, the development of self-propelled elevators has been progressing. That is, it is a ropeless elevator in which the car is driven to travel by a linear motor that has a primary coil in the hoistway and a permanent magnet on the car side. Among them, a lift and traverse (horizontal movement) elevator (hereinafter referred to as "lift and traverse elevator") that has a traverse path that intersects with the hoistway and moves the car back and forth between the hoistway and the traverse path has attracted attention because it allows for more flexible operation management (Patent Document 1).

[0003] In an elevator that moves up and down and across, the car is supported by a support structure on a carriage that runs along guide rails laid in the elevator and across the across path. Since the support structure allows for not only up and down movement but also across the across path, it cannot adopt a structure that supports the center of gravity of the car in a plan view, as in the case of the car frame of a rope-type elevator, and must have a cantilever structure.

[0004] Patent Document 2 describes a self-propelled elevator that is not an elevator and traverse elevator but is only elevator-type, but has a cantilevered support structure. In Patent Document 2, as shown in Fig. 2, a car chamber 11 is supported by a floor support member 12a made of steel that is installed horizontally.

[0005] In this case, the floor support member 12a must be made of a steel with a considerably high rigidity to prevent bending of the floor support member 12a due to the weight of the car room 11 and passengers, which would cause a step between the landing floor and the floor of the car room when the car lands on the floor. Increasing the rigidity of the steel will increase the weight of the steel and, ultimately, the weight of the entire car. This will result in an increase in the size of the linear motor.

[0006] In contrast, Patent Document 3 discloses a horizontal leg 11 formed of a plurality of metal sheets 12 welded together as a support structure corresponding to the floor receiving member 12 (Patent Document 3, page 2, lines 23 to 25, Fig. 2, fig. 3). It also states that the horizontal leg 11 can be made into a truss structure (Patent Document 3, page 2, line 27). And, Fig. 2 of Patent Document 3 shows a horizontal leg 11 made into a truss structure made of a plurality of metal sheets 12.

[0007] By making the horizontal leg 11 a truss structure, it is believed that it is possible to achieve a weight reduction compared to the floor support member 12a made of shaped steel as disclosed in Patent Document 2. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Special Publication No. 2019-509954 [Patent Document 2] Japanese Patent Application Publication No. 6-80353 [Patent Document 3] International Publication No. 2018 / 153650 [Patent Document 4] China Utility Model No. 211496516 Summary of the Invention [Problem to be solved by the invention]

[0009] However, in the truss structure of Patent Document 3 constituting the horizontal leg 11, as shown in FIG. 2, the thin metal plate 12 sandwiched between two metal plates 12 is arranged in a direction perpendicular to the length direction of the horizontal leg 11, so that it is likely to bend easily and the bending stress at the base end will be large when supporting the car room 2 compared to the case where a steel beam is used. For this reason, in Patent Document 3, the cavity 20 at the base end of the horizontal leg 11 is filled with aluminum foam 21 (Patent Document 3, page 3, lines 12 to 15, FIG. 2). However, even though it is a foam, it is a metal, so there is a corresponding increase in weight.

[0010] In view of the above problems, an object of the present invention is to provide a cab support that is lighter than that of Patent Document 2 and has higher bending strength than that of Patent Document 3. [Means for solving the problem]

[0011] In order to achieve the above object, the car support of the present invention is a car support for supporting a car in a self-propelled elevator, which is attached to a car that runs vertically and horizontally guided by guide rails laid in a hoistway and a crossway, and includes: a vertical frame located on the rear side of the car and attached so as to be rotatable relatively to the car about a horizontal axis; and a pair of horizontal frames extending horizontally from lower ends of the vertical frame toward the front side of the car, on which the car is placed, wherein each of the horizontal frames includes a band-shaped upper metal plate, a band-shaped lower metal plate disposed opposite the upper metal plate with a vertical gap therebetween, and a band-shaped horizontal reinforcing rib located between the upper metal plate and the lower metal plate and arranged in the horizontal direction perpendicular to both metal plates.

[0012] The vertical frame is also characterized in that it includes a first metal plate parallel to the back surface of the cage, a second metal plate horizontally spaced apart from the first metal plate and arranged opposite the first metal plate, and a band-shaped vertical reinforcing rib located between the first metal plate and the second metal plate and arranged vertically in an orientation perpendicular to both metal plates. Effect of the Invention

[0013] According to the car support of the present invention having the above-mentioned configuration, a pair of horizontal frames on which the car is placed are each provided with a horizontal reinforcing rib between the upper metal plate and the lower metal plate, in an attitude perpendicular to both metal plates, in the horizontal direction from the lower end of the vertical frame toward the front side of the car. In other words, because the support (horizontal frame) that supports the car in a cantilever manner is made up of a combination of metal plates, it is lighter than the floor support member 12a of Patent Document 2 which is made up of shaped steel.

[0014] Furthermore, since the horizontal reinforcing rib is arranged in the horizontal direction and perpendicular to the upper metal plate and the lower metal plate, it can exhibit greater strength against the bending moment due to the weight of the car chamber than the horizontal leg 11 of Patent Document 3, in which the reinforcing rib (thin metal plate 12) is arranged in a direction perpendicular to the horizontal direction and at an angle to the two upper and lower thin metal plates 12. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a front view showing a schematic configuration of a self-propelled elevator. [Diagram 2] 11 is a diagram for explaining the operation of changing the direction of travel of a car in the above-mentioned self-propelled elevator. FIG. [Diagram 3] FIG. 2(a) is a front view of the car, and FIG. 2(b) is a left side view of the car. [Figure 4] FIG. 2 is a perspective view of a cab support that supports the cab of the passenger car. [Diagram 5] 5 is a perspective view of the cab support shown in FIG. 4 with certain members removed so that the inside of the cab support can be seen. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, the car chamber support according to the present invention will be described based on an embodiment with reference to the drawings. Fig. 1 is a front view showing a schematic configuration of a ropeless self-propelled elevator 10 (hereinafter simply referred to as "elevator 10") having a passenger car 12 including a car chamber 20 supported by a car chamber support 100 according to the embodiment. Note that the scales of the components are not necessarily uniform in all the drawings including Fig. 1.

[0017] The elevator 10 is an elevator that moves up and down and traverse (horizontally) and has elevator shafts V1, V2, and V3 and a traverse path H1. The number of elevator shafts is not limited to three, and may be one, two, or four or more. The number of traverse paths is also not limited to one, and may be two or more.

[0018] A guide rail GV is installed vertically in each of the hoistways V1, V2, and V3. A guide rail GH is installed horizontally in the crosswalk. Both guide rails GV and GH are made of four steel beams, and apart from the difference in the installation direction, they are basically the same in structure.

[0019] A rotating platform TP is provided at each intersection of the elevator shafts V1, V2, V3 and the crosswalk H1. A guide rail GT is laid on each rotating platform TP. The guide rail GT is basically configured similarly to the guide rails GV and GH. Each rotating platform TP is driven to rotate around an axis (horizontal axis) perpendicular to the paper surface.

[0020] The elevator 10 has a plurality of cars 12 (four in the illustrated example). Primary coils (not shown) are laid along the guide rails GV, GH, and GT in the hoistways V1, V2, and V3 and the transverse path H1. The cars 12 have permanent magnets (not shown) on their rear sides. The primary coils and the permanent magnets form a linear motor.

[0021] The car 12 is driven by the linear motor (not shown), and travels vertically while being guided by a guide rail GV, and travels horizontally while being guided by a guide rail GH.

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

[0023] First, the car 12 (FIG. 2(a)) is run up to the rotating platform TP (in this example, it is lowered) and stopped (FIG. 2(b)). Next, the rotating platform TP is rotated until the guide rail GT is in a horizontal position (FIGS. 2(c) and 2(d)). Then, the car 12 is driven (runs) in the horizontal direction by the linear motor (FIG. 2(e)). When changing the orientation of the car 12 running horizontally to the vertical direction, the above operation is reversed. Note that the above-mentioned configuration that uses a linear motor to move the car not only vertically but also horizontally in a ropeless manner can be realized by known technology described, for example, in JP2017-508689A, and detailed explanation thereof will be omitted.

[0024] Fig. 3(a) shows a front view of the car 12, and Fig. 3(b) shows a left side view of the same. The car 12 has a bogie 14 that runs while being guided by guide rails GV (GH, GT (Fig. 1)). The bogie 14 has two roller guides 16 provided corresponding to each of the four shaped steels that make up each of the guide rails GV, GH, GT. Each of the roller guides 16 includes a pair of rollers 18. The permanent magnets (not shown) that make up the linear motor (not shown) are attached to the bogie 14.

[0025] The passenger car 12 has a substantially rectangular parallelepiped-shaped cab 20. A cab door 22 is provided on the front side of the cab 20. The cab 20 is placed on and supported by a cab support 100 attached to the bogie 14.

[0026] Fig. 4 shows a perspective view of the cab support 100. The cab support 100 includes a vertical frame 110 located on the rear side of the cab 20, and a pair of horizontal frames 120, 130 extending horizontally from the lower end of the vertical frame 110 toward the front side of the cab 20 (the car door 22 side). As shown in Fig. 3, the cab 20 is placed on the horizontal frames 120, 130. Here, the horizontal direction from the lower end of the vertical frame 110 toward the front side of the cab 20 is represented by the x-axis (Figs. 3(b) and 4). The vertical direction (perpendicular direction) is represented by the y-axis (Figs. 3(a), 3(b), and 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, one end of which is fixed to the bogie 14, is press-fitted into the inner ring of the rolling bearing 24. With this configuration, the car support 100 (car 12) is attached to the bogie 14 so as to be rotatable around the horizontal axis (the axis of the rolling bearing 24 and the axis of the shaft 26).

[0028] As a result, on the rotating platform TP, the car room support 100 (car 12) can maintain a horizontal position without rotating relative to the bogie 14 that is guided by the guide rail GT and rotates together with the guide rail GT (FIG. 2(c)). The configuration for rotatably supporting the car relative to the bogie can be realized by known techniques described in Patent Document 3, JP2017-508689A, etc.

[0029] Next, a detailed description will be given of the cab support 100. The vertical frame 110 includes a first metal plate 112 provided parallel to the rear surface of the cab 20, and a second metal plate 113 arranged opposite the first metal plate 112 with a gap therebetween in the horizontal direction.

[0030] The horizontal frame 120 includes a band-shaped upper metal plate 121 and a lower metal plate 122 arranged opposite the upper metal plate 121 with a gap therebetween in the vertical direction.

[0031] Similar to the horizontal frame 120, the horizontal frame 130 includes a band-shaped upper metal plate 131 and a lower metal plate 132 arranged opposite the upper metal plate 131 with a gap therebetween in the vertical direction.

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

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

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

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

[0036] The metal plates and reinforcing ribs constituting the vertical frame 110 and the horizontal frames 120 and 130 are each made of, for example, a steel plate.

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

[0038] According to the car chamber support body 100 according to the embodiment described above, the horizontal frames 120, 130 on which the car chamber 20 is placed are each provided with horizontal reinforcing ribs 123a, 123b, 123c, 133a, 133b, 133c in the horizontal direction from the lower end of the vertical frame 110 toward the front side of the car chamber 20, between the upper metal plates 121, 131 and the lower metal plates 122, 132, in an attitude perpendicular to the upper metal plates 121, 131 and the lower metal plates 122, 132. In other words, since the support body (horizontal frames 120, 130) that supports the car chamber 20 in a cantilever manner is formed from a combination of metal plates, it is lighter in weight than the floor support member 12a of Patent Document 2 which is formed from shaped steel.

[0039] Furthermore, since the horizontal reinforcing ribs 123a, 123b, 123c, 133a, 133b, 133c are arranged in the horizontal direction and perpendicular to the upper metal plates 121, 131 and the lower metal plates 122, 132, they exhibit greater strength against the bending moment caused by the weight of the cage than the horizontal leg 11 of Patent Document 3, in which the reinforcing rib (sheet metal 12) is arranged in a direction perpendicular to the horizontal direction and at an angle to the two upper and lower sheet metal plates 12.

[0040] The vertical frame 110, from which a pair of horizontal frames 120, 130 extend from its lower end, also has vertical reinforcing ribs 114a, ..., 114j arranged in the vertical direction (perpendicular direction) between the first metal plate 112 and the second metal plate 113, and in an orientation perpendicular to the first metal plate 112 and the second metal plate 131, thereby exhibiting high strength against bending moments propagating through the horizontal frames 120, 130.

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

[0042] (2) In the above embodiment, the upper and lower metal plates and the horizontal reinforcing ribs in the horizontal frames 120 and 130 are integrated by welding (integrated), but in the case of a horizontal frame in which the upper and lower metal plates are parallel, the horizontal frames may be configured using extruded shapes so that the upper and lower metal plates and the horizontal reinforcing ribs are integrated. As with the horizontal frames, the vertical frames may also be configured using extruded shapes.

[0043] (3) In the above embodiment, an example was described in which the car room support 100 was used in a self-propelled elevator in which a primary coil is laid along the guide rails GV, GH, and GT, and a permanent magnet is provided on the back side of the car 12 to form a linear motor. However, the car room support of the present invention can also be applied to a self-propelled elevator in which, conversely, a permanent magnet is laid along the guide rails, and a primary coil is provided on the back side of the car. [Industrial Applicability]

[0044] INDUSTRIAL APPLICABILITY The cab support body according to the present invention can be suitably used as a cab support body that supports a cab in, for example, a self-propelled elevator. [Explanation of symbols]

[0045] 100 Cage support 110 Vertical Frame 120, 130 horizontal frames 121, 131 Upper metal plate 122, 132 Lower metal plate 123a, 123b, 123c, 133a, 133b, 133c Horizontal reinforcing ribs

Claims

[Claim 1] In a self-propelled elevator, a car support is attached to a carriage that travels vertically and horizontally while being guided by guide rails laid in the hoistway and the horizontal path, and supports the car, a vertical frame located on the rear side of the car and attached to the bogie so as to be rotatable about a horizontal axis relative to the car; a pair of horizontal frames extending horizontally from lower ends of the vertical frames toward a front side of the car chamber, on which the car chamber is placed; Including, Each of the horizontal frames is a band-shaped upper metal plate; a strip-shaped lower metal plate disposed opposite the upper metal plate at a vertical interval from the upper metal plate; a band-shaped horizontal reinforcing rib located between the upper metal plate and the lower metal plate and arranged in the horizontal direction so as to be perpendicular to both metal plates; Including, The vertical frame is a first metal plate parallel to the rear surface of the cab; a second metal plate disposed opposite the first metal plate with a horizontal gap therebetween; a strip-shaped vertical reinforcing rib located between the first metal plate and the second metal plate and provided in a vertical direction so as to be perpendicular to both the metal plates; Contains a car chamber support member characterized in that the horizontal reinforcing rib and the vertical reinforcing rib are provided integrally, or the horizontal reinforcing rib and the vertical reinforcing rib are separate bodies, and an end portion of the horizontal reinforcing rib on the vertical rib side and an end portion of the vertical reinforcing rib on the horizontal reinforcing rib side are joined by welding or the like.

Images