elevator equipment

Abstract

To provide an elevator device capable of reducing strength of a guide rail.SOLUTION: A load support column 21 is installed in a hoistway 1. A lower end of the load support column 21 is located above the lower end of a first car guide rail 4. A connecting beam 22 extends between the load support column 21 and the first car guide rail 4. A first connecting tool 23 is provided on the connecting beam 22. A suspension body 16 is connected to the connecting beam 22 via the first connecting tool 23.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to elevator systems. [Background technology]

[0002] In conventional elevator systems, a car and a counterweight are suspended by multiple ropes. A rail mounting member is fixed to one of a pair of car guide rails. A support member is connected to the rail mounting member. The support member is perpendicular to the rail mounting member and protrudes horizontally from the car guide rail. The car-side ends of each rope are connected to the support member (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-236029 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional elevator systems such as those described above, the vertical load acting on the multiple ropes is supported by support members that protrude horizontally from the car guide rail, which causes a large bending moment to act on the car guide rail, making it necessary to increase the cross section of the car guide rail and increase its strength.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an elevator apparatus that can reduce the strength of the guide rails. [Means for solving the problem]

[0006] The elevator device of the present disclosure comprises a lifting body that moves up and down in a lifting shaft, a plurality of guide rails installed in the lifting shaft to guide the lifting body as it moves up and down, a load support column installed in the lifting shaft, a connecting beam suspended between a target rail, which is one of the plurality of guide rails, and the load support column, and a suspension body connected to the connecting beam and suspending the lifting body, and the lower end of the load support column is located above the lower end of the target rail. [Effects of the Invention]

[0007] According to the elevator apparatus of the present disclosure, the strength of the guide rail can be reduced. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a side view showing a main part of an elevator apparatus according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] 3 is a configuration diagram schematically showing a first car guide rail, a load support column, and a connecting beam in FIG. 2.

[0023] FIG. [Figure 4] FIG. 3 is a plan view showing a fixing structure of a load-supporting column to the architectural beam of FIG. 2. [Figure 5] FIG. 4 is an explanatory diagram showing a mechanical model of the connecting beam in FIG. 3. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described with reference to the drawings. Embodiment 1 Fig. 1 is a side view showing a main part of an elevator apparatus according to embodiment 1. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. Fig. 1 is a view taken along line II in Fig. 2.

[0010] In the figure, a car 2 as a lifting body and a counterweight 3 are provided within a hoistway 1. When viewed from directly above the hoistway 1, the car 2 has a first side surface 2a, a second side surface 2b, a front surface 2c, and a rear surface 2d. The first side surface 2a and the second side surface 2b face each other. A car entrance / exit is provided on the front surface. The rear surface 2d faces the front surface 2c.

[0011] When the elevator shaft 1 is viewed from directly above, the counterweight 3 faces the second side surface 2b.

[0012] A first car guide rail 4 and a second car guide rail 5 are installed in the hoistway 1 as a plurality of guide rails. Also installed in the hoistway 1 are a first counterweight guide rail 6 and a second counterweight guide rail 7.

[0013] The first car guide rail 4 and the second car guide rail 5 guide the rising and falling of the car 2. The first car guide rail 4 faces the first side surface 2a. The second car guide rail 5 faces the second side surface 2b.

[0014] The first counterweight guide rail 6 and the second counterweight guide rail 7 guide the counterweight 3 as it moves up and down.

[0015] The first car guide rail 4 is disposed on the opposite side of the car 2 from the counterweight 3 when viewed from the landing. The second car guide rail 5 is disposed on the same side of the car 2 as the counterweight 3 when viewed from the landing.

[0016] The first car guide rail 4, the second car guide rail 5, the first counterweight guide rail 6, and the second counterweight guide rail 7 are each fixed to a plurality of architectural beams 9 via a plurality of rail brackets 8. In Fig. 1, the plurality of architectural beams 9 are omitted. In Fig. 2, the plurality of rail brackets 8 are omitted.

[0017] A machine base 11 is installed at the top of the elevator shaft 1. The machine base 11 is supported by a second car guide rail 5, a first counterweight guide rail 6, and a second counterweight guide rail 7.

[0018] A hoisting machine 12 is provided on a machine base 11. The elevator apparatus of embodiment 1 is a machine room-less elevator. The hoisting machine 12 has a drive sheave 13, a hoisting machine motor 14, and a pair of hoisting machine brakes 15. The hoisting machine motor 14 rotates the drive sheave 13. The pair of hoisting machine brakes 15 keep the drive sheave 13 stationary. The pair of hoisting machine brakes 15 also brake the rotation of the drive sheave 13.

[0019] A suspension body 16 is wound around the drive sheave 13. A plurality of ropes or a plurality of belts is used as the suspension body 16. The car 2 and the counterweight 3 are suspended by the suspension body 16, and are raised and lowered in the hoistway 1 by rotating the drive sheave 13.

[0020] A first car sheave 17 and a second car sheave 18 are provided below the car 2. A counterweight sheave 19 is provided above the counterweight 3.

[0021] A load support column 21 is installed in the hoistway 1. The longitudinal direction of the load support column 21 is parallel to the vertical direction. The load support column 21 is provided separately from the first car guide rail 4, the second car guide rail 5, the first counterweight guide rail 6, and the second counterweight guide rail 7, and does not guide either the car 2 or the counterweight 3.

[0022] The load support pillar 21 is disposed behind the first car guide rail 4 in the depth direction of the car 2 and at a distance from the first car guide rail 4. The depth direction of the car 2 is a direction perpendicular to the front surface 2c, and corresponds to the left-right direction in FIG.

[0023] Furthermore, the load support pillar 21 is disposed at the same position as the first car guide rail 4 in the width direction of the car 2. The width direction of the car 2 is a direction that is perpendicular to the depth direction of the car 2 and perpendicular to the vertical direction, that is, the up-and-down direction in FIG.

[0024] A connecting beam 22 is horizontally suspended between the first car guide rail 4 as the target rail and the load support pillar 21. The connecting beam 22 is fixed to the first car guide rail 4 and the load support pillar 21. The longitudinal direction of the connecting beam 22 is parallel to the depth direction of the car 2.

[0025] When viewed from directly above the elevator shaft 1, the load support columns 21 and the connecting beams 22 face the first side surface 2a. That is, the load support columns 21 and the connecting beams 22 are disposed on the opposite side of the car 2 from the counterweight 3 in the width direction of the car 2.

[0026] The connecting beam 22 is provided with a first connector 23. The machine base 11 is provided with a second connector (not shown).

[0027] The suspension body 16 has a first end and a second end. The first end is connected to a first connector 23. That is, the suspension body 16 is connected to the connecting beam 22 via the first connector 23. The first connector 23 is a connecting portion of the suspension body 16 to the connecting beam 22.

[0028] The distance from the first connector 23 to the first car guide rail 4 is shorter than the distance from the first connector 23 to the load support pillar 21.

[0029] The second end is connected to the second connector. The suspension body 16 is wound around, in order from the first end, the first car sheave 17, the second car sheave 18, the drive sheave 13, and the counterweight sheave 19, and reaches the second end. The roping system of the elevator apparatus in embodiment 1 is a 2:1 roping system.

[0030] FIG. 3 is a schematic diagram showing the first car guide rail 4, the load support pillar 21, and the connecting beam 22 of FIG. 2, as viewed in the direction of arrow III in FIG.

[0031] The lower end of the first car guide rail 4 is located at the bottom of the hoistway 1. The lower end of the load support pillar 21 is spaced apart from the bottom of the hoistway 1. In other words, the lower end of the load support pillar 21 is located higher than the lower end of the first car guide rail 4.

[0032] The first car guide rail 4 is configured by joining a plurality of rail members 20 in the vertical direction. As the load support pillar 21, the same member as one of the plurality of rail members 20 is used.

[0033] In the first embodiment, the same member as the uppermost rail member 20 is used as the load support column 21. Moreover, the load support column 21 is disposed at the same height as the uppermost rail member 20.

[0034] The load-bearing column 21 is fixed to the architectural beam 9 via a plurality of rail brackets 8, similar to each rail member 20.

[0035] Fig. 4 is a plan view showing the fixing structure of the load-supporting column 21 to the architectural beam 9 in Fig. 2. A fixing plate 24 is fixed onto the architectural beam 9. A rail bracket 8 is fixed to the fixing plate 24.

[0036] The rail bracket 8 has a fixed portion 8a and a rail mounting portion 8b. The fixed portion 8a is placed on and fixed to the fixed plate 24. The rail mounting portion 8b protrudes upward from the fixed portion 8a.

[0037] The load support pillar 21 is fixed to the rail mounting portion 8b by a plurality of rail clips 25 and a plurality of fasteners 26. Specifically, by tightening the plurality of fasteners 26, the load support pillar 21 is sandwiched between the plurality of rail clips 25 and the rail mounting portion 8b, and is fixed to the rail mounting portion 8b.

[0038] The fixing structure of the load support pillar 21 to the architectural beam 9 is similar to the fixing structure of each rail member 20 of the first car guide rail 4 to the architectural beam 9.

[0039] Fig. 5 is an explanatory diagram showing a mechanical model of the tie beam 22 in Fig. 3. A vertical load P acts on the tie beam 22 from the suspension body 16. The vertical load P is supported by a reaction force N1 from the first car guide rail 4 and a reaction force N2 from the load support column 21. This prevents a moment from being directly generated in the first car guide rail 4.

[0040] The ratio of reaction force N1 to reaction force N2 is the inverse ratio of the distance a from the point of application of vertical load P to first car guide rail 4 to the distance b from the point of application of vertical load P to load support column 21. Therefore, by making the ratio b / a as large as possible, reaction force N2 can be made significantly smaller relative to vertical load P, and load support column 21 can be easily held in hoistway 1 with a small holding force.

[0041] In such an elevator system, a load support column 21 is installed in the hoistway 1. The lower end of the load support column 21 is located higher than the lower end of the first car guide rail 4. A connecting beam 22 is suspended between the load support column 21 and the first car guide rail 4. The suspension body 16 is connected to the connecting beam 22.

[0042] This prevents a moment from being directly generated on the first car guide rail 4. Furthermore, the vertical load P from the suspension body 16 is distributed to the first car guide rail 4 and the load support pillar 21, reducing the compressive load acting on the first car guide rail 4. Therefore, the strength of the first car guide rail 4 can be reduced with a simple configuration.

[0043] Furthermore, the strength of the second car guide rail 5 can be reduced in accordance with the strength of the first car guide rail 4, thereby reducing costs. Furthermore, the weight of the first car guide rail 4 and the second car guide rail 5 can be reduced, thereby reducing the labor required for installing the first car guide rail 4 and the second car guide rail 5.

[0044] Furthermore, the distance from the first connector 23 to the first car guide rail 4 is shorter than the distance from the first connector 23 to the load support column 21. Therefore, the load support column 21 can be easily held in the hoistway 1 with a small holding force.

[0045] Furthermore, the same material as the rail member 20 is used for the load support column 21. This makes it possible to suppress an increase in the number of different parts. Furthermore, the load support column 21 can be fixed to the architectural beam 9 using the same fixing structure as the rail member 20, which also makes it possible to suppress an increase in the number of different parts.

[0046] Furthermore, the load support column 21 is disposed at the same height as the uppermost rail member 20. This allows the load support column 21 to be easily installed in the hoistway 1.

[0047] Furthermore, when viewing the hoistway 1 from directly above, the connecting beam 22 faces the first side surface 2a, and the counterweight 3 faces the second side surface 2b. This makes it possible to efficiently arrange multiple pieces of equipment in the hoistway 1 while suppressing the direct generation of a moment on the first car guide rail 4.

[0048] Note that a member different from the rail member 20 may be used as the load support column 21. In this case, the strength of the load support column 21 may be smaller than the strength of the rail member 20. This allows the weight of the load support column 21 to be reduced.

[0049] Moreover, the load support pillar 21 may be disposed behind the car 2 in the depth direction of the car 2 .

[0050] Furthermore, the load support pillar 21 may be disposed in front of the first car guide rail 4 in the depth direction of the car 2 .

[0051] Furthermore, the distance b does not necessarily have to be smaller than the distance a.

[0052] The elevator device may also be of a type in which the lifting area of ​​the counterweight 3 is located behind the lifting area of ​​the car 2.

[0053] Furthermore, the target rail is not limited to the first car guide rail 4. Furthermore, the lifting body may be a counterweight 3.

[0054] The above describes in detail preferred embodiments, but the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims.

[0055] Various aspects of the present disclosure are summarized below as appendices.

[0056] (Appendix 1) A lifting body that moves up and down the elevator shaft; a plurality of guide rails installed in the elevator shaft to guide the elevation of the elevator body; a load-bearing column installed in the elevator shaft; a connecting beam spanning between a target rail, which is one of the plurality of guide rails, and the load support column; and A suspension body connected to the connecting beam and suspending the lifting body Equipped with An elevator apparatus, wherein a lower end of the load-bearing column is located above a lower end of the target rail. (Appendix 2) 2. The elevator apparatus according to claim 1, wherein the distance from the connection portion of the suspension body to the connecting beam to the target rail is shorter than the distance from the connection portion to the load support column. (Appendix 3) The target rail is configured by joining a plurality of rail members in the vertical direction, 3. The elevator apparatus according to claim 1, wherein the load support column is the same member as one of the plurality of rail members. (Appendix 4) 4. The elevator apparatus according to claim 3, wherein the load support column is arranged at the same height as the uppermost rail member among the plurality of rail members. (Appendix 5) The target rail is configured by joining a plurality of rail members in the vertical direction, 3. The elevator system according to claim 1, wherein the strength of the load support column is less than the strength of one of the plurality of rail members. (Appendix 6) a counterweight suspended by the suspension body and moving up and down the hoistway; Furthermore, the lifting body is a car, The cage has a first side and a second side facing each other, An elevator system as described in any one of appendix 1 to appendix 5, wherein, when viewed from directly above the elevator shaft, the connecting beam faces the first side surface and the counterweight faces the second side surface. [Explanation of symbols]

[0057] 1 elevator shaft, 2 car (elevating body), 2a first side surface, 2b second side surface, 3 counterweight, 4 first car guide rail (target rail), 5 second car guide rail, 16 suspension body, 20 rail member, 21 load support column, 22 connecting beam, 23 first connector (connection portion).

Claims

1. A lifting body that moves up and down the elevator shaft; a plurality of guide rails installed in the elevator shaft to guide the elevation of the elevator body; a load-bearing column installed in the elevator shaft; a connecting beam spanning between a target rail, which is one of the plurality of guide rails, and the load support column; and A suspension body connected to the connecting beam and suspending the lifting body Equipped with The lower end of the load support column is located above the lower end of the target rail, The target rail is configured by joining a plurality of rail members in the vertical direction, the load-supporting column is disposed at the same height as the uppermost rail member among the plurality of rail members, and is fixed to the building beam via a plurality of rail brackets; An elevator system in which the load-supporting columns are not disposed at the same height as the remaining rail members of the plurality of rail members excluding the uppermost rail member.

2. 2. The elevator system according to claim 1, wherein a distance from a connection portion of the suspension body to the connecting beam to the target rail is smaller than a distance from the connection portion to the load-bearing column.

3. An elevator apparatus as described in claim 1 or claim 2, wherein the load-supporting column is the same as one of the plurality of rail members.

4. 3. The elevator system according to claim 1, wherein the strength of the load support column is less than the strength of one of the plurality of rail members.

5. a counterweight suspended by the suspension body and moving up and down the hoistway; Furthermore, the lifting body is a car, The cage has a first side and a second side facing each other, 3. The elevator system according to claim 1, wherein, when the elevator shaft is viewed from directly above, the connecting beam faces the first side surface and the counterweight faces the second side surface.

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