Rail bracket for elevator

Abstract

To provide a rail bracket for an elevator that is able to reduce vibration transmitted to a wall surface of a hoistway and is able to stabilize the support of a guide rail.SOLUTION: A rail bracket for an elevator 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 reinforcement portion that reinforces the periphery of the opening is formed on at least one of the first connection portion and the second connection portion. When a direction from a wall surface toward a guide rail is defined as a first direction, the reinforcement portion is disposed at the same position as at least a part of the opening in the first direction.SELECTED DRAWING: Figure 2

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 traction machine and car are transmitted to the rail bracket via the guide rail. These vibrations can be transmitted to the walls of the elevator shaft. In this case, vibration and noise problems can occur inside the building. On the other hand, the rail bracket is also required to provide stable support for the guide rail. [Prior art documents] [Patent documents]

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

[0005] The embodiment aims to provide an elevator rail bracket that can reduce vibrations transmitted to the wall surface of the elevator shaft and stabilize the support of the guide rail. [Means for solving the problem]

[0006] The embodiment is a rail bracket for attaching a guide rail extending in the ascending / descending direction of an elevator car to a wall surface of a hoistway. The rail bracket includes a first bracket attached to the wall surface and a second bracket attached to the guide rail. The first bracket includes a first connection portion formed perpendicular to the ascending / descending direction. The second bracket includes a second connection portion formed perpendicular to the ascending / descending 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. 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 positioned in the same position as at least a portion of the opening in the first direction. [Brief explanation of the drawings]

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

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

[0009] As shown in FIG. 1, an elevator apparatus 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 camber 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 ascending and descending direction DE. The counterweight 4 rises and falls while being guided by a counterweight guide rail 9 extending in the ascending and descending 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 apparatus 1, including the hoisting machine 6. For example, the control panel 11 controls the operation of the hoisting machine 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 configuration 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 hoisting machine 6 and the control panel 11 may be provided above the hoistway 2, etc. Also, the counterweight 4 may not be connected to the main ropes 5, and the hoisting machine 6 may wind up or pay out the main ropes 5 connected to the car 3. Even in this case, the hoisting machine 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, the rail bracket of the elevator 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 this embodiment includes a first bracket 21 and a second bracket 22. The first bracket 21 and the second bracket 22 are made of a plastic 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 connecting 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 lifting / lowering direction DE. The first mounting portion 21a may also be disposed vertically.

[0015] The first connecting portion 21b is formed in a flat plate shape perpendicular to the ascending / descending direction DE. The first connecting portion 21b may also 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 attachment portion 22a and a second connection portion 22b.

[0017] A guide rail G is attached to the second mounting portion 22a using a bolt and a rail clip (not shown). 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 direction DE. The second mounting portion 22a may be disposed vertically.

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

[0019] The second connecting portion 22b is attached to the first connecting portion 21b. A portion of the second connecting portion 22b overlaps the upper surface of the first connecting portion 21b. The first connecting portion 21b and the second connecting portion 22b are fastened together with bolts or the like. As shown in FIG. 3, the length L1 of the first bracket 21 in a first direction D1 (described later) may be longer than the 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 this embodiment includes the first opening 21d.

[0021] The first opening 21d is formed in the first connecting portion 21b. The first opening 21d may have a closed planar 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. 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 the edge of the first connecting portion 21b on the guide rail G side.

[0022] The planar area of ​​first opening 21d may be 30% or more of the planar area of ​​first connecting portion 21b, which can prevent first connecting portion 21b from resonating as described below.

[0023] As shown in Fig. 3, the second connecting portion 22b does not have to have an opening. As shown in Fig. 3, the second connecting portion 22b does not have to overlap the first opening 21d, but a part of the second connecting portion 22b may overlap the first opening 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 same position as at least a part of the opening 30 in the first direction D1. 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 this embodiment includes a first reinforcing portion 21e formed in the first connecting portion 21b. The first reinforcing portion 21e is formed integrally with 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 way, 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 portion 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 further toward the wall surface 2a than the first opening 21d. The first reinforcing portion 21e may extend further toward the guide rail G than the first opening 21d. However, the first reinforcing portion 21e may be formed at the same position as a portion of the first opening 21d in the first direction D1, rather than the entire first opening 21d.

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

[0028] If neither the first connection portion 21b nor the second connection portion 22b has an opening, vibrations generated by the traction machine 6 and the car 3 may be transmitted to the wall surface 2a of the elevator shaft 2 via the rail bracket 20. In this case, low-frequency vibrations may occur at the first connection portion 21b or the second connection portion 22b of the rail bracket 20. This vibration may occur, in part, because the first connection portion 21b or the second connection portion 22b is formed in a flat plate shape. In this embodiment, the first connection portion 21b has a large planar area, which may cause the first connection portion 21b to vibrate like a membrane. This may cause the first connection portion 21b to resonate, resulting in low-frequency vibrations. Such vibrations are more likely to occur when the planar area of ​​the first connection portion 21b is increased or the plate thickness of the first connection portion 21b is reduced. When low-frequency vibrations are transmitted to the wall surface 2a, vibrations and noise problems 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 connecting portion 21b and the second connecting portion 22b, the first connecting portion 21b and the second connecting portion 22b can be prevented from vibrating like a membrane. In this embodiment, the first opening 21d formed in the first connecting portion 21b can prevent the first connecting portion 21b from generating low-frequency vibrations. In this case, the vibration transmitted to the wall surface 2a can be reduced, making it unnecessary to reduce the contact area between the first mounting portion 21a and the wall surface 2a to prevent the vibration from being transmitted. In this case, the contact area between the first mounting portion 21a and the wall surface 2a can be increased, thereby stabilizing the attachment of the first bracket 21 to the wall surface 2a. This also improves the ease of attachment. Furthermore, because the opening 30 can prevent vibration, the second connecting portion 22b can be attached directly over the first connecting portion 21b. In this case, an elastic body or the like for vibration reduction is not required, improving reliability. Furthermore, when an elastic body is used, there are concerns about problems such as the elastic body being lost in a 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 to this, in the present embodiment, at least one of first connecting portion 21b and second connecting portion 22b is formed with reinforcing portion 40 that reinforces the periphery of opening 30. This makes it possible to improve the mechanical strength of the periphery of opening 30.

[0032] As described above, 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 reduces the rigidity of the rail bracket, and suppresses transmission of vibrations to the wall surface 2a of the hoistway 2. Furthermore, the reinforcing portion 40 is disposed in the same position as at least a portion of the opening 30 in the first direction D1. This effectively improves the mechanical strength around the opening 30. This reduces vibrations transmitted to the wall surface 2a of the hoistway 2 and stabilizes support for the guide rail G.

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

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

[0035] Furthermore, according to the present embodiment, first reinforcing portion 21e is formed on side edge 21f of first connecting portion 21b. This allows first reinforcing portion 21e to be easily formed. Furthermore, first reinforcing portion 21e can be formed long in first direction D1, further improving the mechanical strength of first connecting portion 21b.

[0036] In the above-described embodiment, an example has been described in which first reinforcing portion 21e is formed integrally with first connecting portion 21b by bending. However, this embodiment is not limited to this. For example, first reinforcing portion 21e may be formed separately from first connecting portion 21b and welded to 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 differs mainly in that the first reinforcing portion is formed on the opening edge that defines the first opening and extends in the 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 in the first embodiment shown in Figures 1 to 3 are designated by the same reference numerals and detailed description thereof will be omitted.

[0039] As shown in Figures 4 and 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 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 on the first connecting portion 21b.

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

[0041] As described above, according to the present embodiment, first reinforcing portion 21e is formed on opening edge 21h of first opening 21d. This allows first reinforcing portion 21e to be disposed near first opening 21d, thereby effectively reinforcing the periphery of first opening 21d. Therefore, first reinforcing portion 21e can effectively improve the mechanical strength of the periphery of first opening 21d.

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

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

[0044] The second embodiment shown in Fig. 6 differs mainly in that the reinforcing portion includes a second reinforcing portion formed in the second connecting 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-described first reinforcing portion 21e.

[0046] The second reinforcing portion 22e according to the present embodiment is formed integrally 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 portion 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 portion 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 entire first opening 21d in the first direction D1, rather than at a portion of the first opening 21d.

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

[0049] The second opening 22d is formed in the second connecting portion 22b. The planar shape of the second opening 22d may be connected to an edge 22g of the second connecting portion 22b and formed to cut out the second connecting portion 22b. The edge 22g is the edge of the second connecting 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 connecting portion 22b in a rectangular shape.

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

[0051] The above-described second reinforcing portion 22e is disposed at the same position as at least a portion 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 further toward the second connecting portion 22b than the second opening 22d. However, the second reinforcing portion 22e may be formed at the same position as a portion of the second opening 22d in the first direction D1, rather than the entire second opening 22d.

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

[0053] Furthermore, according to this 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 elevation direction DE, at least a portion of the second opening 22d overlaps at least a portion of the first opening 21d. This reduces the transmission of vibrations to the wall surface 2a also at 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 formed integrally 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 embodied 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 within the scope and spirit of the invention, and are also included in the inventions and their equivalents as defined 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 connecting portion formed perpendicular to the lifting direction and attached to the first connecting portion; 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 connecting portion and the second connecting 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 part of the opening in the first direction. Elevator rail bracket.

2. 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 elevator rail bracket according to claim 1 .

3. the first reinforcing portion is integrally formed with the first connecting portion by bending; The elevator rail bracket according to claim 2.

4. the first reinforcing portion is formed on a side edge of the first connecting portion; 4. The elevator rail bracket according to claim 2 or 3.

5. the first reinforcing portion is formed on an opening edge that defines the first opening and extends in the first direction; 4. The elevator rail bracket according to claim 2 or 3.

6. the opening includes a first opening formed in the first connection portion, The reinforcing portion includes a second reinforcing portion formed on the second connection portion. The elevator rail bracket according to claim 1 .

7. the opening includes a first opening formed in the first connection portion and a second opening formed in the second connection portion; When viewed in the lifting direction, at least a portion of the second opening overlaps at least a portion of the first opening. The elevator rail bracket according to claim 1 .

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