JP5329031B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus in which a load of an elevator apparatus including a car and a counterweight is supported by at least a part of guide rails.

  In the conventional elevator apparatus, an L-shaped support member is fixed to the upper part of one of the two car guide rails and the two counterweight guide rails. A basket return wheel and a counterweight return wheel are attached to the support member. Therefore, the load of the elevator equipment including the car and the counterweight is supported by the car guide rail and the counterweight guide rail via the support member (see, for example, Patent Document 1).

JP-A-2005-75575

  In the conventional elevator devices as described above, the magnitude and direction of the load acting on the guide rails are not uniform, so the cross-sectional area of some guide rails is increased to increase strength and prevent the guide rails from floating It is necessary to install a device to be used, which makes the configuration complicated and increases the cost.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an elevator apparatus that can reduce the strength of the guide rail and reduce the cost with a simple configuration.

  An elevator apparatus according to the present invention includes a car and a counterweight that are raised and lowered in a hoistway, a main rope that suspends the car and the counterweight, a hoist that lifts and lowers the car and the counterweight via the main rope, A plurality of guide rails installed in the road to guide the raising and lowering of the car and the counterweight, a support pillar standing in the hoistway, and supported by at least a part of the guide rail and the support pillar A support beam for supporting the load of the elevator equipment including the car and the counterweight.

  In the elevator apparatus according to the present invention, since the support pillar that supports the support beam is provided together with the guide rail, the magnitude of the load acting on the guide rail can be reduced, and the magnitude and direction of the load acting on the guide rail can be reduced. The variation can be suppressed, and the strength of the guide rail can be reduced and the cost can be reduced with a simple configuration.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a plan view showing a schematic layout of an elevator apparatus (machine room-less elevator) according to Embodiment 1 of the present invention. In the figure, first and second car guide rails 1 and 2 and first and second counterweight guide rails 3 and 4 are installed in the hoistway. The car 5 is raised and lowered in the hoistway by being guided by the car guide rails 1 and 2. The counterweight 6 is moved up and down in the hoistway by being guided by the counterweight guide rails 3 and 4.

  The car 5 has a front surface 5a having a car doorway, a back surface 5b facing the front surface 5a, and first and second side surfaces 5c and 5d facing each other. The first car guide rail 1 faces the first side surface 5c. The second car guide rail 2 faces the second side surface 5d. Further, the first and second car guide rails 1 and 2 are arranged to face each other at the same position in the depth direction of the car 5.

  The counterweight 6 is arranged behind the car 5 so as to face the back surface 5b of the car 5 when positioned at the same height as the car 5 (back fall type). The counterweight guide rails 3 and 4 are disposed on both sides of the counterweight 6 in the width direction so as to face each other.

  A pair of car suspension wheels 7 and 8 are mounted on the lower part of the car 5. On the upper part of the counterweight 6, a counterweight suspension vehicle 9 is mounted. The suspension wheels 7 to 9 are arranged so that their rotation axes are parallel to the depth direction of the car 5.

  A hoisting machine 10 that raises and lowers the car 5 and the counterweight 6 is installed in the lower part of the hoistway. The hoisting machine 10 includes a hoisting machine main body 11 having a motor and a brake, and a drive sheave 12 rotated by the hoisting machine main body 11. As the hoisting machine 10, a thin hoisting machine in which the dimension in the axial direction of the drive sheave 12 is smaller than the dimension in the direction perpendicular to the axial direction is used.

  A plurality of main ropes 13 (only one is shown in FIG. 1) for suspending the car 5 and the counterweight 6 are wound around the drive sheave 12. The hoisting machine 10 raises and lowers the car 5 and the counterweight 6 through the main rope 13.

  The hoisting machine 10 is arranged side by side on the side of the counterweight 6 so as to face the back surface 5b between the car 5 and the hoistway wall in the vertical projection plane. The drive sheave 12 is arranged so that its rotational axis is parallel to the depth direction of the car 5.

  Support pillars (auxiliary rails) 14 are erected vertically in the hoistway. The support column 14 is disposed in the vicinity of the corner between the second side surface 5d and the back surface 5b of the car 5. For example, the same support rail 14 as the guide rails 1 to 4 can be used, and the installation structure in the hoistway is the same as that of the guide rails 1 to 4 (structure using brackets and rail clips). it can. The upper part of the second car guide rail 2, the first and second counterweight guide rails 3, 4 and the support column 14 is substantially L for supporting the load of the elevator equipment including the car 5 and the counterweight 6. A letter-shaped support beam 15 is supported.

  The second car guide rail 2 supports the first end 15 a of the support beam 15. The first counterweight guide rail 3 supports the second end 15 b of the support beam 15. The second counterweight guide rail 4 supports an intermediate portion between the second end portion 15b of the support beam 15 and the bent portion. The support column 14 supports the bent portion of the support beam 15.

  The support beam 15 supports the first and second car return wheels 16 and 17 and the counterweight return wheel 18. The car return wheels 16 and 17 are arranged so that their rotation axes are parallel to the width direction of the car 5. The counterweight return wheel 18 is arranged so that its rotation axis is inclined with respect to the depth direction of the car 5.

  The main rope 13 is connected to a first end portion 13a connected to a first rope stop provided on the upper portion of the first car guide rail 1 and a second rope stop provided on the support beam 15. And a second end 13b connected thereto. Further, the main rope 13 is wound around the car suspension wheels 7 and 8, the car return wheels 16 and 17, the drive sheave 12, the counterweight return wheel 18, and the counterweight lifter 9 in order from the first end 13 a side. It is hung. That is, the car 5 and the counterweight 6 are suspended by the main rope 13 by a 2: 1 roping method. Accordingly, a part of the load of the car 5 is supported by the first car guide rail 1.

  2 is an enlarged plan view showing a main part of the elevator apparatus of FIG. 1, and FIG. 3 is a front view showing the vicinity of the hoisting machine 10 of FIG. The second counterweight guide rail 4 and the support column 14 are provided with a steady rest 19 for restricting the swing of the portion rising from the drive sheave 12 of the main rope 13 (the portion between the drive sheave 12 and the return wheels 17 and 18). Is fixed (FIG. 2).

  The steady rest 19 is disposed so as to surround the main rope 13 between the hoistway wall at the intermediate portion in the vertical direction of the hoistway. The steady rest 19 is attached to a steel attachment arm fixed to the second counterweight guide rail 4 and the support column 14. Furthermore, as the steady rest 19, for example, a steel member covered with a resin part is used.

  A support base (machine base) 20 is installed at the bottom of the hoistway. The first and second counterweight guide rails 3 and 4 are installed on the support base 20. A hoisting machine support frame 21 is fixed on the support base 20. The hoisting machine 10 is supported inside the hoisting machine support frame 21 via a plurality of vibration isolation members 22. The support column 14 is erected on the hoisting machine support frame 21. That is, the support column 14 is erected on a support base 20 common to the counterweight guide rails 3 and 4 via the hoisting machine support frame 21.

  Further, as shown in FIG. 3, the first counterweight guide rail 3 and the support pillars 14 are disposed on both ends of the support base 20, and the second counterweight guide rail 4 is provided on the support base 20. It is arranged on the middle part.

  In such an elevator apparatus, at least a part of the load of elevator equipment such as the car 5, the counterweight 6, the main rope 13, the support beam 15, and the return wheels 16 to 18 is only the guide rails 2, 3, and 4. Since it is also supported by the support pillar 14, the magnitude of the load acting on the guide rails 2, 3, 4 can be reduced, and the magnitude of the load acting on the guide rails 2, 3, 4 can vary. With a simple configuration, the strength of the guide rails 1 to 4 can be reduced and the cost can be reduced.

Further, since the counterweight guide rails 3 and 4 and the support column 14 are supported on the support base 20, the upward force acting on the hoisting machine 10 is applied to the counterweight guide rails 3 and 4 and the support column 14.
Can be offset in a balanced manner by the downward force acting on the structure, and the structure of the support base 20 can be simplified.

  Furthermore, since the steady rest 19 is fixed to the support column 14, the structure of the steady rest 19 can be simplified. That is, in the case where there is no support column 14, it is difficult to attach the steady rest of the main rope 13 between the drive sheave 12 and the car return wheel 17, and the structure of the steady rest is complicated. If the stopper 19 is fixed, the structure of the steady rest 19 is simple. Thereby, it can prevent that the main rope 13 shakes at the time of an earthquake etc., and is caught by a hoistway apparatus.

Here, FIG. 4 is an explanatory view for explaining the load acting on the support beam 15 from the car return wheels 16 and 17 of FIG. The support beam 15 is supported at point A by the second car guide rail 2 and supported at point B by the support column 14. And the load P (B) of B point is as following Formula.
P (B) = T1 × (L1 + L2) / L3.

FIG. 5 is an explanatory view for explaining a load acting on the support beam 15 from the counterweight wheel 18 of FIG. The support beam 15 is supported at the point C by the second counterweight guide rail 4 and is supported at the point D by the first counterweight guide rail 3. The load P (C) at point C and the load P (D) at point D are as follows.
P (C) = T2 × (L4 + 2 × L5) / L6
P (D) = 3 × T2-P (C)

On the other hand, when there is no support pillar 14, the load of C point and D point is as follows.
P (C) = P (B) × (L6 + L7) / L6 + T2 × (L4 + 2 × L5) / L6
P (D) = P (B) + 3 × T2-P (C)

  Thus, by adding the support column 14, the support beam 15 is not a cantilever beam, and the load P (C) at the point C can be reduced. Further, no upward load is generated at point D.

  Note that the number of steady rests is not particularly limited, and when the up and down stroke is long, a plurality of steady rests may be arranged at intervals in the vertical direction.

Embodiment 2. FIG.
Next, FIG. 6 is a plan view showing a schematic layout of the elevator apparatus according to Embodiment 2 of the present invention, FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6, and FIG. It is a side view which expands and shows a support part. In this example, the support column 14 is disposed immediately above the hoisting machine 10. That is, the support column 14 is erected on the hoisting machine support frame 21 directly above the center in the width direction of the hoisting machine 10 and is supported on the hoisting machine 10.

  On the upper part of the hoisting machine support frame 21, a support column connecting part 21a protruding upward is provided. The lower end portion of the support column 14 is held by the support column connection portion 21a by a rail clip 23 that is a holder. Further, a spacer 24 as a height adjusting mechanism for adjusting the vertical position of the support column 14 is interposed between the lower end surface of the support column 14 and the upper surface of the hoisting machine support frame 21. The spacer 24 is configured by stacking a plurality of flat plates.

  The support beam 15 includes a counterweight side beam 25 supported by the support column 14 and the counterweight guide rails 3 and 4, and a car rope retaining beam 26 supported by the counterweight side beam 25 and the car guide rail 1. And a counterweight side beam 25 and a cage return beam 27 supported by the cage guide rail 2.

  The counterweight side beam 25 is arranged in parallel and horizontally in the width direction of the car 5. On the counterweight side beam 25, a counterweight return wheel 18 is supported. The counterweight side beam 25 supports a second rope stop 29.

  The cage rope retaining beam 26 and the cage return beam 27 are disposed at right angles and horizontally to the counterweight side beam 25. A first rope stopper 28 is supported on the cage rope anchoring beam 26. The car return wheels 16 and 17 are supported below the car return wheel beam 27. Other configurations are the same as those in the first embodiment.

  In such an elevator apparatus, since at least a part of the load of the elevator equipment is supported not only by the guide rails 2, 3, 4 but also by the support pillar 14, the load acting on the guide rails 2, 3, 4 is large. In addition to reducing the load, it is possible to suppress variations in the magnitude and direction of the load acting on the guide rails 2, 3, and 4. Can be reduced.

  Here, when the motor diameter and the motor width of the hoisting machine 10 increase as the capacity of the elevator increases, the distance between the counterweight guide rails 3 and 4 is reduced. As a result, the fulcrum of the counterweight return wheel 18 moves away from the hoisting machine 10, and the downward force applied to the counterweight return wheel 18 increases, and the counterweight side beam 25, the counterweight guide rails 3, 4, and The support base 20 needs to be increased in size. However, since the support pillar 14 is provided between the hoisting machine 10 and the counterweight side beam 25, the upward force applied to the hoisting machine 10 and the downward force applied to the counterweight return wheel 18 cancel each other. Thus, it is not necessary to increase the size of the counterweight side beam 25, the counterweight guide rails 3 and 4, and the support base 20.

  Further, since the spacer 24 is interposed between the hoisting machine support frame 21 and the support column 14, the vertical position of the support column 14 can be easily adjusted by adjusting the thickness of the spacer 24. It is possible to easily adjust the level of the counterweight side beam 25 by absorbing the installation error of the device.

Embodiment 3 FIG.
Next, FIG. 9 is a plan view showing a schematic layout of an elevator apparatus according to Embodiment 3 of the present invention, FIG. 10 is a cross-sectional view taken along line XX of FIG. 9, and FIG. It is a side view which expands and shows a support part. Although not shown in the second embodiment, each of the guide rails 1 to 4 is provided with a plurality of rail clips 23 (FIG. 11) on a plurality of rail brackets 31 fixed in the hoistway at intervals in the vertical direction. Is held by. Similarly, the support column 14 is also held by a plurality of rail clips 23 on a plurality of rail brackets 31.

  A structure 32 with a height adjusting function is interposed between the lower end surface of the support column 14 and the upper surface of the hoisting machine support frame 21. The structure 32 with a height adjustment function includes a base frame 33, a movable frame 34, a plurality of fastening bolts 35, and a plurality of jack-up bolts 36, and the height dimension of the structure itself is variable (adjustable). It has become.

  The base frame 33 is installed on the upper part of the hoisting machine support frame 21. The movable frame 34 is combined with the base frame 33 so as to be movable up and down. A plurality of elongated holes 33 a that allow the fastening bolts 35 to be displaced in the vertical direction are provided on the side surface of the base frame 33. Each fastening bolt 35 is screwed to the movable frame 34 through the long hole 33a. By tightening the fastening bolt 35, the vertical movement of the movable frame 34 with respect to the base frame 33 is restricted. Further, by loosening the fastening bolt 35, the movable frame 34 can be moved up and down.

  Each jackup bolt 36 is screwed to the upper surface portion of the movable frame 34. Further, the tip end portion (lower end portion) of each jackup bolt 36 is in contact with the upper surface of the hoisting machine support frame 21. By rotating the jack-up bolt 36 with the tightening bolt 35 loosened, the movable frame 34 is moved up and down.

  A spacer 37 for gap adjustment (for hoistway error adjustment) is interposed between the upper surface of the movable frame 34 and the lower end surface of the support column 14. The support column connecting portion 21 a is provided upright on the movable frame 34.

  12 is an enlarged front view showing the structure 32 with height adjustment function of FIG. 11, FIG. 13 is a side view showing the structure 32 with height adjustment function of FIG. 12, and FIG. 14 is a movable frame 34 of FIG. FIG. 15 is a side view showing the structure 32 with a height adjusting function shown in FIG. 14.

  In the elevator apparatus according to the third embodiment, when the hoisting machine 10 is replaced, the movable frame 34 is moved downward to create a gap between the spacer 37 and the support column 14. In order to generate such a gap, first, the rail clip 23 holding the support column 14 on the support column connection portion 21a is removed from the support column connection portion 21a. Next, the tightening bolt 35 is loosened and the jackup bolt 36 is rotated to move the movable frame 34 downward. Accordingly, the spacer 37 is also moved down together with the movable frame 34, and a gap is generated between the upper surface of the spacer 37 and the lower end surface of the support column 14 (FIGS. 14 and 15).

  In such an elevator apparatus, since the structure 32 with a height adjusting function is interposed between the support column 14 and the hoisting machine support frame 21, the support column 14 is held when the hoisting machine 10 is replaced. It is not necessary to pull up the counterweight side beam 25 and the support column 14 after all the rail clips 23 are loosened, and easily create a gap between the support column 14 and the hoisting machine support frame 21. Therefore, the replacement work of the hoisting machine 10 can be simplified.

  When the support column 14 is replaced, first, a gap is generated between the spacer 37 and the support column 14 as described above. And while removing the eyeplate part (not shown) which connects between the support pillars 14 adjacent to the up-down direction, the rail clip 23 holding the support pillar 14 in the rail bracket 31 is removed, and the part which needs to be replaced is removed. The support pillar 14 is replaced with a new support pillar 14, and the rail clip 23 is attached. Therefore, it is not necessary to remove all the rail clips 23 to jack up the entire support pillar 14 in order to remove the spacer 37, and the replacement work of the support pillar 14 can be simplified.

Note that the structure and installation method of the support pillars may be different from the guide rails. For example, H-shaped steel may be used as the support column.
In the above example, one support column is shown, but a plurality of support columns may be used.
Further, the main rope may be a rope having a circular cross section or a belt.
Furthermore, the height adjustment mechanism shown in the second embodiment is not limited to the spacer 24. In addition, a height adjustment mechanism or a structure with a height adjustment function may be interposed between the support column and the support base in the first embodiment.

1 is a plan view showing a schematic layout of an elevator apparatus according to Embodiment 1 of the present invention. It is a top view which expands and shows the principal part of the elevator apparatus of FIG. It is a front view which shows the winding machine vicinity of FIG. It is explanatory drawing explaining the load which acts on a support beam from the reverse wheel of FIG. It is explanatory drawing explaining the load which acts on a support beam from the counterweight return wheel of FIG. It is a top view which shows the schematic layout of the elevator apparatus by Embodiment 2 of this invention. It is sectional drawing which follows the VII-VII line of FIG. It is a side view which expands and shows the support part of the support pillar of FIG. It is a top view which shows the schematic layout of the elevator apparatus by Embodiment 3 of this invention. It is sectional drawing which follows the XX line of FIG. It is a side view which expands and shows the support part of the support pillar of FIG. It is a front view which expands and shows the height adjustment mechanism of FIG. It is a side view which shows the height adjustment mechanism of FIG. It is a front view which shows the state which moved down the movable frame of FIG. It is a side view which shows the height adjustment mechanism of FIG.

Explanation of symbols

  1 first car guide rail, 2 second car guide rail, 3 first counterweight guide rail, 4 second counterweight guide rail, 5 car, 6 counterweight, 10 hoisting machine, 13 Main rope, 14 support pillars, 15 support beams, 19 steady rest, 20 support base, 24 spacer (height adjustment mechanism), 32 structure with height adjustment function.

Claims (4)

Cages and counterweights that are raised and lowered in the hoistway,
A main rope for suspending the cage and the counterweight,
A hoisting machine provided at a lower portion of the hoistway and elevating and lowering the car and the counterweight through the main rope;
A hoisting machine support frame for supporting the hoisting machine;
A plurality of guide rails installed in the hoistway for guiding the raising and lowering of the car and the counterweight;
A support column erected on the hoist support frame in the hoistway; and
A support beam that is supported by at least a part of the guide rail and the support column and supports the load of the elevator equipment including the car and the counterweight.
With
Above between the hoist support frame and the support pillar, said support pillar of the vertical position height adjustment mechanism that is provided, wherein the to Rue elevators apparatus for adjusting. Cages and counterweights that are raised and lowered in the hoistway,
A main rope for suspending the cage and the counterweight,
A hoisting machine provided at a lower portion of the hoistway and elevating and lowering the car and the counterweight through the main rope;
A hoisting machine support frame for supporting the hoisting machine;
A plurality of guide rails installed in the hoistway for guiding the raising and lowering of the car and the counterweight;
A support column erected on the hoist support frame in the hoistway; and
A support beam that is supported by at least a part of the guide rail and the support column and supports the load of the elevator equipment including the car and the counterweight.
With
Between the hoisting machine support frame and the support column, it features and to Rue elevators apparatus for height adjustment function structure height itself is variable is interposed. Further comprising a support base installed at the lower part of the hoistway,
The elevator apparatus according to claim 1 or 2, wherein the hoisting machine support frame and some of the guide rails are installed on the support base. The elevator apparatus according to any one of claims 1 to 3 , wherein the support column is provided with a steady rest that regulates the swing of the main rope.

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