Elevator Rail Bracket

Abstract

Provided is an elevator rail bracket that can reduce vibrations transmitted to the wall surface of a hoistway and stabilize the support of a guide rail. [Solution] An elevator rail bracket according to an embodiment includes a first bracket and a second bracket. The second bracket includes a second connection portion attached to a first connection portion of the first bracket. An opening is formed in at least one of the first connection portion and the second connection portion. A reinforcing portion that reinforces the periphery of the opening is formed in at least one of the first connection portion and the second connection portion. When the direction from the wall surface toward the guide rail is defined as a first direction, the reinforcing portion is disposed in the same position as at least a portion of the opening in the first direction.

Description

[Technical field]

[0001] The present embodiment relates to a rail bracket for an elevator. [Background technology]

[0002] Guide rails are installed in the elevator shaft to guide the elevator car and counterweight as they ascend and descend. The guide rails are attached to the walls of the elevator shaft by rail brackets.

[0003] Vibrations generated by the hoist and car are transmitted to the rail bracket via the guide rail. These vibrations can be transmitted to the walls of the elevator. In this case, vibration and noise problems can occur inside the building. On the other hand, the rail bracket is also required to stably support the guide rail. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 5-078055 [Patent Document 2] JP 2001-261258 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the embodiment is to provide an elevator rail bracket that can reduce vibrations transmitted to the wall surface of a hoistway and stabilize the support of a guide rail. [Means for solving the problem]

[0006] The embodiment is a rail bracket for mounting a guide rail extending in the ascending and descending direction of an elevator car to a wall surface of a hoistway. The rail bracket includes a first bracket mounted to the wall surface and a second bracket mounted to the guide rail. The first bracket includes a first connection part formed perpendicular to the ascending and descending direction. The second bracket includes a second connection part formed perpendicular to the ascending and descending direction and mounted to the first connection part. An opening is formed in at least one of the first connection part and the second connection part. A reinforcing part that reinforces the periphery of the opening is formed in at least one of the first connection part and the second connection part. When the direction from the wall surface toward the guide rail is defined as a first direction, the reinforcing part is disposed in the same position as at least a part of the opening in the first direction. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram for explaining an overall schematic configuration of an elevator apparatus according to a first embodiment. [Diagram 2] FIG. 2 is a side view showing the rail bracket of the elevator according to the first embodiment. [Diagram 3] FIG. 3 is a plan view showing the rail bracket shown in FIG. [Figure 4] FIG. 4 is a perspective view of a first bracket in the rail bracket according to the second embodiment, seen obliquely from above. [Diagram 5] FIG. 5 is a perspective view of the first bracket shown in FIG. 4 as viewed obliquely from below. [Figure 6] FIG. 6 is a perspective view of the rail bracket according to the third embodiment, as viewed obliquely from above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an elevator rail bracket according to the present embodiment will be described with reference to the drawings. First, an elevator apparatus according to the present embodiment will be described.

[0009] As shown in FIG. 1, the elevator device 1 includes a car 3 and a counterweight 4 disposed in a hoistway 2. The car 3 and the counterweight 4 are connected via a main rope 5. The main rope 5 is wound around a traction sheave 6a and a deflection sheave 7 provided on a hoisting machine 6. The hoisting machine 6 winds up the main rope 5, causing the car 3 and the counterweight 4 to rise and fall. The car 3 rises and falls while being guided by a car guide rail 8 extending in the lifting direction DE. The counterweight 4 rises and falls while being guided by a counterweight guide rail 9 extending in the lifting direction DE. The hoisting machine 6 is installed in a machine room 10 provided above the hoistway 2. A control panel 11 is installed in the machine room 10. The control panel 11 is a device that controls the entire elevator device 1 including the hoisting machine 6. For example, the control panel 11 controls the operation of the hoist 6 in response to hall calls and car calls, and lands the car 3 at the hall 12 of the floor for which the call is registered.

[0010] The elevator apparatus 1 is not limited to the form shown in FIG. 1. For example, it may be a so-called machine room-less elevator apparatus. That is, the machine room 10 may not be provided, and the hoist 6 and the control panel 11 may be provided in the upper part of the hoistway 2, etc. Also, the counterweight 4 may not be connected to the main ropes 5, and the hoist 6 may wind up or pay out the main ropes 5 connected to the car 3. Even in this case, the hoist 6 can raise and lower the car 3 via the main ropes 5. That is, the elevator apparatus 1 may be an elevator apparatus that does not have a counterweight 4.

[0011] Next, an elevator rail bracket according to this embodiment (hereinafter simply referred to as rail bracket 20) will be described with reference to Figures 2 and 3. The rail bracket 20 is a device for attaching the above-mentioned car guide rail 8 or weight guide rail 9 to the wall surface 2a of the hoistway 2. The rail bracket 20 according to this embodiment can be applied to both the car guide rail 8 and the weight guide rail 9. In the following description, the car guide rail 8 and the weight guide rail 9 will be referred to as guide rail G.

[0012] As shown in FIGS. 2 and 3, the rail bracket 20 according to the present embodiment includes a first bracket 21 and a second bracket 22. The first bracket 21 and the second bracket 22 are made of a same material.

[0013] The first bracket 21 is attached to a wall surface 2a of the elevator shaft 2. The first bracket 21 is formed in an L-shape. More specifically, the first bracket 21 includes a first mounting portion 21a and a first connection portion 21b.

[0014] The first mounting portion 21a is fastened to the wall surface 2a using a bolt or the like. A hole 21c (see Figs. 4 and 5) for inserting the bolt is formed in the first mounting portion 21a. The first mounting portion 21a is formed in a flat plate shape along the ascending / descending direction DE. The first mounting portion 21a may be disposed vertically.

[0015] The first connection portion 21b is formed in a flat plate shape perpendicular to the ascending / descending direction DE. The first connection portion 21b may be disposed horizontally.

[0016] The second bracket 22 is attached to the guide rail G. The second bracket 22 is formed in an L-shape. More specifically, the second bracket 22 includes a second mounting portion 22a and a second connecting portion 22b.

[0017] A guide rail G is attached to the second mounting portion 22a using a bolt and a rail clip (not shown), etc. A hole 22c (see FIG. 6) for inserting the bolt is formed in the second mounting portion 22a. The second mounting portion 22a is formed in a flat plate shape along the lifting / lowering direction DE. The second mounting portion 22a may be disposed vertically.

[0018] The second connection portion 22b is formed in a flat plate shape perpendicular to the ascending / descending direction DE, or may be disposed horizontally.

[0019] The second connection portion 22b is attached to the first connection portion 21b. A portion of the second connection portion 22b is overlapped on an upper surface of the first connection portion 21b. The first connection portion 21b and the second connection portion 22b are fastened by a bolt or the like. As shown in FIG. 3, a length L1 of the first bracket 21 in a first direction D1 described below may be longer than a length L2 of the second bracket 22 in the first direction D1.

[0020] 3, at least one of the first connecting portion 21b and the second connecting portion 22b is provided with an opening 30. The opening 30 according to the present embodiment includes the first opening 21d.

[0021] The first opening 21d is formed in the first connecting portion 21b. The planar shape of the first opening 21d may have a closed shape. The first opening 21d may be formed in a circular shape. However, the first opening 21d may be formed in a rectangular shape as shown in FIG. 4 and the like. In addition, the first opening 21d is not limited to having a closed shape. For example, like a second opening 22d (see FIG. 6) described later, the first opening 21d may be connected to an edge 21g of the first connecting portion 21b and formed to cut out the first connecting portion 21b. The edge 21g is an edge on the side of the guide rail G of the first connecting portion 21b.

[0022] The planar area of ​​the first opening 21d may be 30% or more of the planar area of ​​the first connection portion 21b, in which case it is possible to suppress resonance of the first connection portion 21b, as will be described later.

[0023] As shown in Fig. 3, the second connection portion 22b does not have to have an opening. As shown in Fig. 3, the second connection portion 22b does not have to overlap the first opening portion 21d, but a part of the second connection portion 22b may overlap the first opening portion 21d.

[0024] 2 and 3, at least one of the first connecting portion 21b and the second connecting portion 22b is provided with a reinforcing portion 40 that reinforces the periphery of the opening 30. The reinforcing portion 40 according to the present embodiment is formed in the first direction D1 at the same position as at least a part of the opening 30. The first direction D1 is a direction from the wall surface 2a toward the guide rail G and perpendicular to the lifting direction DE.

[0025] The reinforcing portion 40 according to the present embodiment includes a first reinforcing portion 21e formed in the first connecting portion 21b. The first reinforcing portion 21e is integrally formed in the first connecting portion 21b by bending. The first reinforcing portion 21e is bent downward at a side edge 21f of the first connecting portion 21b. As shown in FIG. 3, the side edge 21f is an edge on both sides of the first connecting portion 21b in a second direction D2 perpendicular to the first direction D1, and is an edge extending in the first direction D1. In this manner, a pair of first reinforcing portions 21e is formed in the first connecting portion 21b.

[0026] The first reinforcing portion 21e is disposed at the same position as at least a part of the first opening 21d in the first direction D1. The first reinforcing portion 21e according to the present embodiment extends in the first direction D1 and is formed at the same position as the entire first opening 21d in the first direction D1. The first reinforcing portion 21e may extend toward the wall surface 2a beyond the first opening 21d. The first reinforcing portion 21e may extend toward the guide rail G beyond the first opening 21d. However, the first reinforcing portion 21e may be formed at the same position as a part of the first opening 21d, rather than the entire first opening 21d, in the first direction D1.

[0027] Next, the operation of the rail bracket 20 according to this embodiment will be described.

[0028] If neither the first connection part 21b nor the second connection part 22b has an opening, the vibration generated in the hoisting machine 6 and the car 3 may be transmitted to the wall surface 2a of the elevator shaft 2 via the rail bracket 20. At this time, low-frequency vibration may occur in the first connection part 21b or the second connection part 22b of the rail bracket 20. This vibration may occur, in part, because the first connection part 21b or the second connection part 22b is formed in a flat plate shape. In this embodiment, the planar area of ​​the first connection part 21b is large, so the first connection part 21b may vibrate like a membrane. For this reason, the first connection part 21b may resonate and generate low-frequency vibration. Such vibration is likely to occur when the planar area of ​​the first connection part 21b is increased or the plate thickness of the first connection part 21b is reduced. If low-frequency vibration is transmitted to the wall surface 2a, problems such as vibration and noise may occur in the rooms of the building.

[0029] On the other hand, when the opening 30 is provided in at least one of the first connection portion 21b and the second connection portion 22b, the first connection portion 21b and the second connection portion 22b can be suppressed from vibrating like a membrane. In this embodiment, the first opening 21d is formed in the first connection portion 21b, so that the first connection portion 21b can be suppressed from generating low-frequency vibration. In this case, since the vibration transmitted to the wall surface 2a can be reduced, it is not necessary to reduce the contact area between the first mounting portion 21a and the wall surface 2a in order to suppress the transmission of the vibration. In this case, the contact area between the first mounting portion 21a and the wall surface 2a can be increased, and the mounting of the first bracket 21 to the wall surface 2a can be stabilized. The workability of the mounting work can also be improved. In addition, since the generation of vibration can be suppressed by the opening 30, the second connection portion 22b can be directly attached to the first connection portion 21b. In this case, an elastic body for vibration reduction can be eliminated, and reliability can be improved. Furthermore, when an elastic body is used, there are concerns about problems such as the elastic body being lost due to fire or the elastic body being deformed due to fatigue, but by not using an elastic body, such problems can be avoided.

[0030] However, when the opening 30 is provided in at least one of the first connecting portion 21b and the second connecting portion 22b, the mechanical strength around the opening 30 may decrease.

[0031] In contrast, in the present embodiment, at least one of the first connecting portion 21b and the second connecting portion 22b is formed with a reinforcing portion 40 that reinforces the periphery of the opening 30. This makes it possible to improve the mechanical strength of the periphery of the opening 30.

[0032] Thus, according to this embodiment, the opening 30 is provided in at least one of the first connection portion 21b of the first bracket 21 attached to the wall surface 2a and the second connection portion 22b of the second bracket 22 attached to the guide rail G. This can reduce the rigidity of the rail bracket, and can suppress the transmission of vibration to the wall surface 2a of the hoistway 2. In addition, the reinforcing portion 40 is disposed in the same position as at least a part of the opening 30 in the first direction D1. This can effectively improve the mechanical strength around the opening 30. Therefore, it is possible to reduce the vibration transmitted to the wall surface 2a of the hoistway 2 and stabilize the support of the guide rail G.

[0033] Moreover, according to this embodiment, the opening 30 includes a first opening 21d formed in the first connecting portion 21b, and the reinforcing portion 40 includes a first reinforcing portion 21e formed in the first connecting portion 21b. This allows the first reinforcing portion 21e to effectively reinforce the periphery of the first opening 21d. Therefore, the mechanical strength of the periphery of the first opening 21d can be improved by the first reinforcing portion 21e.

[0034] Moreover, according to the present embodiment, the first reinforcing portion 21e is formed by bending the first connecting portion 21b. This makes it possible to easily form the first reinforcing portion 21e, and thus reduces the manufacturing cost of the first bracket 21.

[0035] Moreover, according to the present embodiment, the first reinforcing portion 21e is formed on the side edge 21f of the first connecting portion 21b. This makes it possible to easily form the first reinforcing portion 21e. Also, the first reinforcing portion 21e can be formed long in the first direction D1, and the mechanical strength of the first connecting portion 21b can be further improved.

[0036] In the above-described embodiment, the first reinforcing portion 21e is integrally formed with the first connecting portion 21b by bending. However, the embodiment is not limited to this. For example, the first reinforcing portion 21e may be formed separately from the first connecting portion 21b and welded to the first connecting portion 21b.

[0037] (Second embodiment) Next, an elevator rail bracket according to a second embodiment will be described with reference to Figs.

[0038] The second embodiment shown in Figures 4 and 5 is different in that the first reinforcing portion is formed on an opening edge that defines a first opening and extends in a first direction, and other configurations are substantially the same as those of the first embodiment shown in Figures 1 to 3. Note that in Figures 4 and 5, the same parts as those of the first embodiment shown in Figures 1 to 3 are denoted by the same reference numerals and detailed description thereof will be omitted.

[0039] As shown in Fig. 4 and Fig. 5, in this embodiment, the first opening 21d is formed in a rectangular shape. The first reinforcing portion 21e is formed on an opening edge 21h that defines the first opening 21d and extends in the first direction D1. The first reinforcing portion 21e is bent downward at the opening edge 21h of the first opening 21d. The first reinforcing portion 21e is formed on the opening edges 21h located on both sides of the first opening 21d in the second direction D2. In this way, a pair of first reinforcing portions 21e is formed in the first connection portion 21b.

[0040] In the present embodiment, the first reinforcing portion 21e is disposed at the same position as at least a part of the first opening 21d in the first direction D1. The first reinforcing portion 21e extends in the first direction D1 and is formed at the same position as almost the entirety of the first opening 21d in the first direction D1.

[0041] Thus, according to the present embodiment, the first reinforcing portion 21e is formed on the opening edge 21h of the first opening 21d. This allows the first reinforcing portion 21e to be disposed near the first opening 21d, and the periphery of the first opening 21d can be effectively reinforced. Therefore, the mechanical strength of the periphery of the first opening 21d can be effectively improved by the first reinforcing portion 21e.

[0042] Furthermore, according to this embodiment, the first reinforcing portion 21e is integrally formed with the first connecting portion 21b by bending it at the opening edge 21h of the first opening 21d. This allows the material for the first reinforcing portion 21e to be cut from the area cut out to form the first opening 21d, thereby reducing the manufacturing cost of the first bracket 21. Furthermore, the first reinforcing portion 21e can be easily formed, which also allows the manufacturing cost of the first bracket 21 to be reduced.

[0043] (Third embodiment) Next, an elevator rail bracket according to a third embodiment will be described with reference to FIG.

[0044] In the second embodiment shown in Fig. 6, the reinforcing portion is mainly different in that it includes a second reinforcing portion formed in the second connection portion, and other configurations are substantially the same as those of the second embodiment shown in Fig. 4 and Fig. 5. In Fig. 6, the same parts as those in the second embodiment shown in Fig. 4 and Fig. 5 are denoted by the same reference numerals and detailed description thereof will be omitted.

[0045] 6, the reinforcing portion 40 includes a second reinforcing portion 22e formed in the second connecting portion 22b of the second bracket 22. The reinforcing portion 40 according to the present embodiment does not include the above-mentioned first reinforcing portion 21e.

[0046] The second reinforcing portion 22e according to the present embodiment is integrally formed with the second connecting portion 22b by bending. The second reinforcing portion 22e is bent upward at the side edges 22f of the second connecting portion 22b. The side edges 22f are edges on both sides of the second connecting portion 22b in the second direction D2 and extend in the first direction D1. In this manner, a pair of second reinforcing portions 22e is formed in the second connecting portion 22b.

[0047] The second reinforcing portion 22e is disposed at the same position as at least a part of the first opening 21d. The second reinforcing portion 22e according to the present embodiment extends in the first direction D1 and is formed at the same position as a part of the first opening 21d in the first direction D1. However, the second reinforcing portion 22e may be formed at the same position as the entirety of the first opening 21d in the first direction D1, instead of at a part of the first opening 21d.

[0048] The opening 30 according to the present embodiment may include the above-mentioned first opening 21d and second opening 22d.

[0049] The second opening 22d is formed in the second connection portion 22b. The planar shape of the second opening 22d may be connected to an edge 22g of the second connection portion 22b and formed to cut out the second connection portion 22b. The edge 22g is an edge of the second connection portion 22b on the wall surface 2a side. The second opening 22d shown in FIG. 6 is formed to cut out the edge 22g of the second connection portion 22b in a rectangular shape.

[0050] At least a portion of the second opening 22d overlaps with at least a portion of the first opening 21d when viewed in the elevation direction DE. In the example shown in Fig. 6, a portion of the second opening 22d overlaps with a portion of the first opening 21d.

[0051] The above-mentioned second reinforcing portion 22e is disposed at the same position as at least a part of the second opening 22d in the first direction D1. The second reinforcing portion 22e according to the present embodiment is formed at the same position as the entire second opening 22d in the first direction D1. The second reinforcing portion 22e extends toward the second connection portion 22b beyond the second opening 22d. However, the second reinforcing portion 22e may be formed at the same position as a part of the second opening 22d, rather than the entire second opening 22d, in the first direction D1.

[0052] As described above, according to the present embodiment, reinforcing portion 40 includes second reinforcing portion 22e formed on second connecting portion 22b. This makes it possible for second reinforcing portion 22e to effectively improve the mechanical strength of the periphery of first opening 21d.

[0053] According to the present embodiment, the opening 30 includes a first opening 21d formed in the first connecting portion 21b and a second opening 22d formed in the second connecting portion 22b. When viewed in the ascending / descending direction DE, at least a portion of the second opening 22d overlaps at least a portion of the first opening 21d. This can reduce the transmission of vibration to the wall surface 2a even in the second connecting portion 22b.

[0054] In the above-described embodiment, the second reinforcing portion 22e is bent upward at the side edge 22f of the second connecting portion 22b. However, the embodiment is not limited to this. For example, the second reinforcing portion 22e may be bent upward at the opening edge 22h that defines the second opening 22d and extends in the first direction D1, similar to the first reinforcing portion 21e shown in Figs. 4 and 5.

[0055] In the above-described embodiment, the second reinforcing portion 22e is integrally formed with the second connecting portion 22b by bending. However, the embodiment is not limited to this. For example, the second reinforcing portion 22e may be formed separately from the second connecting portion 22b and welded to the first connecting portion 21b.

[0056] According to the embodiment described above, it is possible to reduce vibrations transmitted to the wall surface 2a of the elevator shaft 2 and to stabilize the support of the guide rail G.

[0057] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0058] 2: elevator shaft, 2a: wall surface, 20: rail bracket, 21: first bracket, 21a: first mounting portion, 21b: first connection portion, 21d: first opening, 21e: first reinforcing portion, 21f: side edge, 21h: opening edge, 22: second bracket, 22a: second mounting portion, 22b: second connection portion, 22d: second opening, 22e: second reinforcing portion, 30: opening, G: guide rail,

Claims

1. A rail bracket for attaching a guide rail extending in the ascending and descending direction of an elevator car to a wall surface of an elevator shaft, a first bracket attached to the wall; A second bracket attached to the guide rail; Equipped with the first bracket includes a first connection portion formed perpendicular to the lifting direction, the second bracket includes a second connection portion formed perpendicular to the lifting direction and attached to the first connection portion; An opening is formed in at least one of the first connection portion and the second connection portion, At least one of the first connection portion and the second connection portion is formed with a reinforcing portion that reinforces a periphery of the opening portion, When a direction from the wall surface toward the guide rail is defined as a first direction, the reinforcing portion is disposed at the same position as at least a portion of the opening in the first direction, the opening includes a first opening formed in the first connection portion, the reinforcing portion includes a first reinforcing portion formed on the first connection portion, the first reinforcing portion is formed on an opening edge that defines the first opening and extends in the first direction; The first connection portion of the first bracket and the second connection portion of the second bracket are fastened to each other. Elevator rail bracket.

2. The first reinforcing portion is integrally formed with the first connecting portion by bending.

2. The elevator rail bracket according to claim 1.

3. The first reinforcing portion is formed on a side edge of the first connecting portion.

3. An elevator rail bracket according to claim 1 or 2.

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