JP6716038B2 - Elevator counterweight device - Google Patents

Description

The present invention relates to an elevator counterweight device in which a pair of connecting members for preventing deformation of left and right side plates are arranged in front of and behind a counterweight frame.

In a conventional elevator counterweight seismic resistance device, a pair of vertical columns of a weight frame are connected by a front connecting body on the front side of the weight frame. Both ends of the front coupling body are attached to the front surfaces of the pair of vertical columns by bolts. A pair of mounting brackets are attached to both ends of the front coupling body by bolts. Both ends of the rear connecting body are attached to the pair of mounting fittings by bolts. The rear connecting body connects a pair of mounting brackets on the rear side of the weight frame (see, for example, Patent Document 1).

JP, 2002-167144, A

In the conventional counterweight seismic resistance device as described above, the bolts for connecting the pair of vertical columns, the front connecting body, the pair of mounting brackets, and the rear connecting body are arranged in the front-rear direction of the counterweight, that is, the thickness. Since it is screwed in the direction and protrudes in front of and behind the counterweight, it is difficult to attach the rear connecting body with the counterweight installed when the gap between the counterweight and the hoistway wall is narrow. ..

The present invention has been made to solve the above problems, and even if the gap between the hoistway wall and the hoistway wall is narrow, the connecting member can be easily attached after the counterweight frame. The purpose is to obtain a counterweight device for an elevator.

An elevator counterweight device according to the present invention is provided on a counterweight frame having a pair of side plates, a plurality of adjusting weights stacked in the counterweight frame, and a counterweight frame. , Equipped with a deformation prevention device for preventing deformation of the side plate, each side plate has a rail facing surface that is a surface facing the counterweight guide rail, and the deformation prevention device is balanced at the intermediate portion in the vertical direction. It has a surrounding body that surrounds the weight frame, and the surrounding body is a pair of mounting members arranged on both sides in the width direction of the counterweight frame and a pair of mounting members on the front side and the rear side of the counterweight frame. Each of the mounting members has a base portion in contact with a corresponding rail-opposing surface and both ends of the base portion in the front-back direction of the counterweight frame, and the base portion It has a pair of protrusions that form an obtuse angle with respect to each other, each connecting member is provided between the connecting portion between the pair of mounting members, and both ends of the connecting portion, and And a pair of connection portions that are inclined with respect to the crossover portion. Each connection portion is superposed on the corresponding protrusion and is fastened to the corresponding protrusion by a fastener.

Elevator counterweight device of the present invention, a pair of mounting members by fastening a projecting portion that forms an obtuse angle with respect to the base portion, and a connecting portion that is inclined with respect to the transition portion by a fastener. Since the pair of connecting members are connected to each other to form the surrounding body, the connecting members can be easily attached to the front and the rear of the counterweight frame even when the gap between the hoistway wall and the hoistway wall is narrow.

1 is a side view showing an elevator according to Embodiment 1 of the present invention. It is a horizontal sectional view of the counterweight device of FIG. It is a front view which shows the principal part of the counterweight apparatus of FIG. It is sectional drawing which expands and shows the principal part of FIG. FIG. 9 is a horizontal cross-sectional view showing a modified example in which the shape of the adjustment weight in FIG. FIG. 6 is a horizontal sectional view of a counterweight device according to Embodiment 2 of the present invention. It is a front view which shows the principal part of the counterweight apparatus of FIG. FIG. 7 is a horizontal sectional view showing a modified example in which the shape of the adjustment weight in FIG. FIG. 9 is a horizontal sectional view of a counterweight device according to Embodiment 3 of the present invention. FIG. 11 is a horizontal sectional view of a counterweight device according to Embodiment 4 of the present invention. It is a top view which shows the principal part of the counterweight apparatus by Embodiment 5 of this invention. It is a disassembled perspective view which shows the principal part of FIG. FIG. 12 is a horizontal sectional view of the counterweight device of FIG. 11. FIG. 14 is a horizontal sectional view of the counterweight device of FIG. 11 at a position lower than that of FIG. 13. It is a horizontal cross-sectional view in the position lower than FIG. 14 of the counterweight apparatus of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1.
1 is a side view showing an elevator according to Embodiment 1 of the present invention. In the figure, a machine room 2 is provided above the hoistway 1. A machine base 3 is installed in the machine room 2. A hoisting machine 4 is supported on the machine base 3. The hoisting machine 4 has a drive sheave 5 and a hoisting machine body 6. The hoisting machine main body 6 includes a hoisting machine motor that rotates the drive sheave 5, and a hoisting machine brake that brakes the rotation of the drive sheave 5.

A deflection wheel 7 is attached to the machine base 3. A suspension 8 is wound around the drive sheave 5 and the deflecting wheel 7. As the suspension body 8, for example, a plurality of ropes or a plurality of belts are used.

A car 9 is connected to the first end of the suspension 8. A balance weight device 10 is connected to the second end of the suspension 8. The car 9 and the counterweight device 10 are suspended in the hoistway 1 by the suspension 8, and the drive sheave 5 rotates to move up and down in the hoistway 1.

In the hoistway 1, a pair of car guide rails 11 that guide the lifting and lowering of the car 9 and a pair of counterweight guide rails 12 that guide the lifting and lowering of the counterweight device 10 are installed.

The car 9 has a car frame 13 to which the suspension body 8 is connected, and a car room 14 supported by the car frame 13.

2 is a horizontal sectional view of the counterweight device 10 of FIG. 1, FIG. 3 is a front view showing an essential part of the counterweight device 10 of FIG. 2, and FIG. 4 is an enlarged sectional view of the essential part of FIG. Is. The counterweight device 10 is arranged between the car 9 and the hoistway wall 1a facing the back surface of the car 9 when viewed from directly above.

The counterweight device 10 includes a counterweight frame 21, a plurality of flat plate-shaped adjustment weights 22, a plurality of counterweight guide devices (not shown), a pair of intermediate stoppers 23, and a deformation prevention device 24. There is.

The counterweight frame 21 has a pair of side plates 25, a lower frame (not shown), and an upper frame (not shown). The side plates 25 are arranged parallel to each other on both sides of the counterweight frame 21 in the width direction (left-right direction in FIGS. 2 and 3). The lower frame is horizontally arranged between the lower ends of the side plates 25. The upper frame is horizontally arranged between the upper ends of the side plates 25. The second end of the suspension 8 is connected to the upper frame.

Each side plate 25 has a shape in which both ends in the direction along the short side of a rectangular flat plate are bent at a right angle in the same direction. That is, each side plate 25 has a side surface portion 25a, a front surface portion 25b, and a rear surface portion 25c. The side surface portion 25a has a rail facing surface 25d that faces the counterweight guide rail 12. The front surface portion 25b and the rear surface portion 25c face each other.

The front surface portion 25b protrudes at a right angle from the end of the side surface portion 25a on the front side of the counterweight frame 21 to the inside in the width direction of the counterweight frame 21. The back surface portion 25c projects at a right angle from the end of the side surface portion 25a on the rear side of the counterweight frame 21 toward the inside in the width direction of the counterweight frame 21.

The adjustment weight 22 is supported on the lower frame. Further, the adjustment weight 22 is vertically stacked in the counterweight frame 21. Further, both ends of each adjustment weight 22 are arranged in the side plate 25. As a result, the adjustment weight 22 is held in the counterweight frame 21.

The counterweight guide devices are arranged on both sides of the upper end of the counterweight frame 21 in the width direction and on both sides of the lower end of the counterweight frame 21 in the width direction. Further, the counterweight guide device is in contact with the corresponding counterweight guide rail 12.

Each intermediate stopper 23 is fixed to the corresponding intermediate portion of the side plate 25 in the up-down direction by, for example, a bolt. Further, each intermediate stopper 23 faces the corresponding counterweight guide rail 12 with a gap. Further, the intermediate stopper 23 comes into contact with the counterweight guide rail 12 when the counterweight guide rail 12 is bent due to vibration during an earthquake. As a result, the force applied to the counterweight guide rail 12 at the time of an earthquake is dispersed.

The deformation prevention device 24 is provided on the counterweight frame 21 and prevents the side plate 25 from being deformed. The deformation prevention device 24 has a rectangular frame-shaped surrounding body 26 and a pair of support bodies 27. The surrounding body 26 surrounds the counterweight frame 21 at an intermediate portion in the vertical direction. The support body 27 is attached to the counterweight frame 21 and prevents downward movement of the surrounding body 26 with respect to the counterweight frame 21.

Each support body 27 is fixed to the front surface portion 25b, and projects from the front surface portion 25b to the front of the counterweight frame 21. The surrounding body 26 is supported on a support 27. A bolt or a pin is used as the support 27. As the bolt, for example, a low head bolt is used. A spring pin, for example, is used as the pin.

The amount of protrusion of the support 27 from the front surface portion 25b is preferably as small as possible. In this example, the support body 27 does not project to the front of the counterweight frame 21 more than the surrounding body 26. For this reason, the surrounding body 26 may be provided with an expansion portion for enlarging the area in contact with the support body 27.

The surrounding body 26 is made of metal such as steel. Further, the surrounding body 26 has a pair of mounting members 28 and a pair of connecting members 29. The mounting members 28 are arranged on both sides in the width direction of the counterweight frame 21. The connecting member 29 connects between the pair of mounting members 28 on the front side and the rear side of the counterweight frame 21.

As shown in FIG. 4, each mounting member 28 has a flat plate-shaped base portion 28a and a pair of flat plate-shaped protruding portions 28b. The base portion 28a is overlaid and in contact with the corresponding rail facing surface 25d.

The projecting portions 28b obliquely project from the both ends of the base portion 28a in the front-rear direction of the counterweight frame 21 to the outside in the width direction of the counterweight frame 21. That is, the protrusion 28 b is inclined with respect to the width direction of the counterweight frame 21. Further, the protrusion 28b forms an obtuse angle with the base 28a. Each mounting member 28 is configured by bending one rectangular flat plate.

Each connecting member 29 has a long and thin rectangular flat plate-shaped transition portion 29a and a pair of connection portions 29b. Each of the transition portions 29a is arranged between the pair of attachment members 28 along the width direction of the counterweight frame 21. Further, in this example, the pair of transition portions 29a are in contact with the stacked body of the adjustment weights 22 on the front side and the rear side of the counterweight frame 21.

The connection parts 29b are provided at both ends of the transition part 29a. Further, each connecting portion 29b is inclined with respect to the corresponding connecting portion 29a. Furthermore, each connecting portion 29b forms an acute angle with the corresponding connecting portion 29a.

Each connecting portion 29b is overlaid on the corresponding protruding portion 28b. Further, each connecting portion 29b is fastened to the corresponding protruding portion 28b by a fastener 30. As each fastener 30, for example, a combination of bolts and nuts is used. In addition, bolts may be used as the fasteners 30 and screw holes may be provided in the protruding portions 28b.

When the deformation preventing device 24 is added to the existing counterweight device 10, holes or screw holes are provided in the front surface portion 25b of each side plate 25, and the support body 27 is fixed to the front surface portion 25b. Further, the attachment members 28 are fixed to the both ends of the front side connecting member 29 by the fasteners 30. Then, the connecting member 29 on the front side is set on the support body 27, and the mounting member 28 is applied to the rail facing surface 25d.

In this state, the connecting portion 29b of the rear connecting member 29 is superposed on the corresponding protruding portion 28b. Then, the connecting portion 29b of the rear connecting member 29 is fixed to the corresponding protruding portion 28b by the fastener 30.

In such a counterweight device 10, since the projecting portion 28b is inclined with respect to the base portion 28a and the connecting portion 29b is inclined with respect to the transitional portion 29a, the thickness direction of the counterweight device 10 ( Even if the gap between the counterweight device 10 and the hoistway wall 1a is narrow, the connecting members 29 can be easily attached to the front and rear of the counterweight frame 21 while suppressing the protrusion of the fastener 30 to the outside. Can be retrofitted to.

Further, when a force that widens the distance between the pair of side plates 25 is generated due to an earthquake, the tensile force acting on the fastener 30 can be reduced.

Further, each projecting portion 28b obliquely projects outward from the corresponding base portion 28a in the width direction of the counterweight frame 21, and each connecting portion 29b forms an acute angle with the corresponding crossover portion 29a. Therefore, the counterweight frame 21 can be held by the surrounding body 26 by tightening the fastener 30.

Furthermore, since the support body 27 is provided on the front surface portion 25b, the support body 27 is attached to the counterweight frame 21 from the side opposite to the hoistway wall 1a, and the surrounding body 26 is more securely attached to the counterweight frame 21. Can be supported by.

Further, since the bolt or the pin is used as the support 27, the support 27 can be attached to the side plate 25 by a simple drilling process.

Note that, in FIG. 2, the size of each adjustment weight 22 in the width direction (vertical direction in FIG. 2) is reduced at both ends in the width direction of the counterweight frame 21. On the other hand, as shown in FIG. 5, the configuration of the deformation prevention device 24 according to the first embodiment uses the adjustment weight 22 having a rectangular planar shape, that is, uses the adjustment weight 22 having a constant dimension in the width direction. It can also be applied in cases.

Embodiment 2.
Next, FIG. 6 is a horizontal sectional view of a counterweight device 10 according to a second embodiment of the present invention, and FIG. 7 is a front view showing a main part of the counterweight device 10 of FIG. In the second embodiment, the support 27 of the first embodiment is omitted. In addition, in the second embodiment, the pair of intermediate stoppers 23 also serve as the support body. That is, the surrounding body 26 is supported by the intermediate stopper 23. Other configurations are similar to those of the first embodiment.

In such a counterweight device 10, since the surrounding body 26 is supported by the intermediate stopper 23, it is not necessary to add a new support body, the number of parts can be reduced, and the deformation prevention device 24 can be made simpler. Can be retrofitted.

In FIG. 6, the width of each adjustment weight 22 in the width direction (vertical direction in FIG. 6) is reduced at both ends in the width direction of the counterweight frame 21. On the other hand, the configuration of the deformation prevention device 24 according to the second embodiment can be applied to the case where the adjustment weight 22 having a rectangular planar shape is used as shown in FIG.

Embodiment 3.
Next, FIG. 9 is a horizontal sectional view of a counterweight device 10 according to a third embodiment of the present invention. In the third embodiment, each protruding portion 28b obliquely protrudes from the corresponding base portion 28a toward the inner side in the width direction of the counterweight frame 21. Each protrusion 28b forms an obtuse angle with the corresponding base 28a. Further, each connecting portion 29b forms an obtuse angle with respect to the corresponding connecting portion 29a.

The planar shape of the surrounding body 26 is a shape in which four corners of a rectangle are chamfered, and the fasteners 30 are fastened to the chamfered portions. Other configurations are similar to those of the first embodiment.

In such a counterweight device 10, since each connecting portion 29b forms an obtuse angle with the corresponding transitional portion 29a, the fastening operation of the fastener 30 can be easily performed.

Fourth Embodiment
Next, FIG. 10 is a horizontal sectional view of a counterweight device 10 according to a fourth embodiment of the present invention. In the fourth embodiment, the support 27 of the third embodiment is omitted. In addition, in the fourth embodiment, the pair of intermediate stoppers 23 also serve as a support. That is, the surrounding body 26 is supported by the intermediate stopper 23. Other configurations are similar to those of the third embodiment.

In such a counterweight device 10, since the surrounding body 26 is supported by the intermediate stopper 23, it is not necessary to add a new support body, the number of parts can be reduced, and the deformation prevention device 24 can be made simpler. Can be retrofitted.

Note that, for example, when the counterweight frame 21 can be tightened by the surrounding body 26 by connecting the mounting member 28 and the connecting member 29, the support body may be omitted.

Embodiment 5.
Next, FIG. 11 is a plan view showing essential parts of a counterweight device 10 according to Embodiment 5 of the present invention, FIG. 12 is an exploded perspective view showing essential parts of FIG. 11, and FIG. 13 is a counterweight of FIG. FIG. 14 is a horizontal sectional view of the device 10, and FIG. 14 is a horizontal sectional view of the counterweight device 10 of FIG. 11 at a position lower than that of FIG. 13. FIG. 15 is a position of the counterweight device 10 of FIG. FIG. 13 corresponds to a cross section taken along line XIII-XIII in FIG. 12, FIG. 14 corresponds to a cross section taken along XIV-XIV in FIG. 12, and FIG. 15 corresponds to a cross section taken along line XV-XV in FIG.

In the fifth embodiment, the wedge member 31 as the wedge portion is fixed to the counterweight guide rail 12 side of the base portion 28a. A pair of tapered inclined surfaces 31 a is provided on both ends of the wedge member 31 in the front-rear direction of the counterweight frame 21. Each of the inclined surfaces 31 a is inclined with respect to the width direction of the counterweight frame 21 so as to move away from the center of the counterweight frame 21 in the front-rear direction as it approaches the side plate 25. Moreover, the inclined surfaces 31a are inclined so that they approach each other as they go downward.

Further, the wedge front surface 31b, which is a surface of the wedge member 31 facing the counterweight guide rail 12, is inclined with respect to the rail facing surface 25d so as to approach the side plate 25 as it goes downward.

Each connecting portion 29b of each connecting member 29 is provided with a notch 29c that avoids the wedge member 31 and an abutting portion 29d that contacts the corresponding inclined surface 31a. Each connecting portion 29b is connected to the protruding portion 28b by one fastener 30 arranged next to the butting portion 29d. The support is omitted. Other configurations are similar to those of the first embodiment.

In such a counterweight device 10, by tightening the fastener 30, the abutting portion 29d moves to the protruding portion 28b side along the inclined surface 31a, and the mounting member 28 side the side plate 25 side via the wedge member 31. Is pushed to. This makes it possible to prevent the surrounding body 26 from dropping without using a support. Further, the generated load can be supported by the mounting member 28 and the connecting member 29, and the number of fasteners 30 can be reduced.

The wedge portion may be provided integrally with the mounting member.
In addition, the wedge portion may be provided on only one of the pair of attachment members or both.
Furthermore, in the above example, the case where the deformation preventing device is added to the existing counterweight device has been described, but the present invention can also be applied to a new counterweight device. In this case, the deformation prevention device can be easily replaced.
Furthermore, the layout and roping method of the elevator to which the present invention is applied are not limited to the example of FIG. For example, the present invention can be applied to an elevator in which the counterweight device is arranged between the side surface of the car and the hoistway wall when viewed from directly above.
Further, the present invention can be applied to various types of elevators such as a machine room-less elevator, a double deck elevator, or a one-shaft multi-car elevator. The one-shaft multi-car system is a system in which an upper car and a lower car arranged directly below the upper car independently move up and down a common hoistway.

10 counterweight device, 12 counterweight guide rail, 21 counterweight frame, 23 intermediate stopper (support), 24 deformation preventing device, 25 side plate, 25a side part, 25b front part, 25c rear part, 25d rail facing Surface, 26 Surrounding body, 27 Supporting body, 28 Mounting member, 28a Base part, 28b Projecting part, 29 Connecting member, 29a Crossing part, 29b Connecting part, 29d Abutting part, 30 Fastener, 31 Wedge member (wedge part), 31a Inclined surface.

Claims (8)

A counterweight frame having a pair of side plates,
A plurality of adjustment weights stacked in the counterweight frame, and a deformation prevention device provided on the counterweight frame for preventing deformation of the side plate,
Each of the side plates has a rail facing surface that is a surface facing the counterweight guide rail,
The deformation prevention device has a surrounding body that surrounds the counterweight frame at an intermediate portion in the vertical direction,
The surrounding body is
A pair of mounting members arranged on both sides in the width direction of the counterweight frame,
A pair of connecting members connecting the pair of mounting members on the front side and the rear side of the counterweight frame,
Each of the mounting members,
A base portion in contact with the corresponding rail facing surface,
A pair of projecting portions projecting from both ends of the base portion in the front-rear direction of the counterweight frame and forming an obtuse angle with the base portion;
Each of the connecting members,
A transition portion arranged between the pair of mounting members,
A pair of connecting portions that are provided at both ends of the transitional portion and that are inclined with respect to the transitional portion,
Each of the connecting portions is overlapped with the corresponding protruding portion, and is fastened to the corresponding protruding portion with a fastener ,
Each of the protruding portions, from the corresponding base portion, is obliquely protruding outward in the width direction of the counterweight frame,
An elevator counterweight device in which each of the connecting portions forms an acute angle with the corresponding connecting portion . A counterweight frame having a pair of side plates,
A plurality of adjustment weights stacked in the counterweight frame, and
Deformation prevention device provided on the counterweight frame to prevent deformation of the side plate
Equipped with
Each of the side plates has a rail facing surface that is a surface facing the counterweight guide rail,
The deformation prevention device has a surrounding body that surrounds the counterweight frame at an intermediate portion in the vertical direction,
The surrounding body is
A pair of mounting members arranged on both sides in the width direction of the counterweight frame,
A pair of connecting members connecting the pair of mounting members on the front side and the rear side of the counterweight frame;
Has
Each of the mounting members,
A base portion in contact with the corresponding rail facing surface,
A pair of projecting parts projecting from both ends of the base part in the front-rear direction of the counterweight frame and forming an obtuse angle with the base part;
Has
Each of the connecting members,
A transition portion arranged between the pair of mounting members,
A pair of connecting portions that are provided at both ends of the transition portion and that are inclined with respect to the transition portion;
Has
Each of the connecting portions is overlapped with the corresponding protruding portion, and is fastened to the corresponding protruding portion with a fastener,
Each of the protrusions, from the corresponding base, is obliquely protruding inward in the width direction of the counterweight frame,
Each said connecting portion counterweight device has an obtuse angle with respect to the transfer section corresponding Rue elevators. The deformation prevention device,
The elevator balance according to claim 1 or 2 , further comprising: a support body attached to the counterweight frame, the support body preventing downward movement of the surrounding body with respect to the counterweight frame. Weight device. Each side plate is
A side surface portion provided with the rail facing surface,
From an end portion of the side surface portion on the front side of the counterweight frame, a front surface portion protruding inward in the width direction of the counterweight frame,
From the end of the side surface portion on the rear side of the counterweight frame, there is a back surface portion that protrudes inward in the width direction of the counterweight frame,
The elevator counterweight device according to claim 3 , wherein the support is fixed to the front surface portion. The counterweight device for an elevator according to claim 4 , wherein the support is a bolt. The balance weight device for an elevator according to claim 4 , wherein the support is a pin. A pair of intermediate stoppers facing the counterweight guide rails are fixed to intermediate portions in the vertical direction of the pair of side plates,
The elevator counterweight device according to claim 3 , wherein the pair of intermediate stoppers also serve as the support. At least one of the mounting members is provided with a wedge portion having a pair of inclined surfaces,
Each of the connecting portions on the side corresponding to the wedge portion is provided with an abutting portion in contact with the inclined surface,
Wherein by tightening the fastener, the counterweight of an elevator according to claim 1, wherein said mounting member via said wedge portion is pressed against the side plate side.

Images