JPWO2019012695A1 - Elevator counterweight device - Google Patents

Abstract

In the elevator counterweight device, the deformation preventing device has a surrounding body that surrounds the counterweight frame at an intermediate portion in the vertical direction. The enclosure includes a pair of attachment members and a pair of connecting members. Each attachment member has a base and a pair of protrusions forming an obtuse angle with respect to the base. Each connecting member has a crossover portion disposed between the pair of attachment members, and a pair of connection portions provided at both ends of the crossover portion and inclined with respect to the crossover portion. . Each connection portion is fastened to the corresponding protrusion by a fastener.

Description

  The present invention relates to a counterweight device for an elevator in which a pair of connecting members that prevent deformation of the left and right side plates are arranged before and after a counterweight frame.

  In a conventional elevator counterweight seismic resistance device, a pair of vertical columns of a weight frame are connected to each other by a front connecting body on the front side of the weight frame. Both ends of the front connection body are attached to the front surfaces of the pair of vertical columns by bolts. A pair of mounting brackets are respectively attached to both ends of the front coupling body by bolts. Both ends of the rear coupling body are respectively attached to the pair of mounting brackets by bolts. The rear side coupling body couples 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 device as described above, the bolts for connecting the pair of vertical columns, the front connection body, the pair of mounting brackets, and the rear connection body are in the longitudinal direction of the counterweight, that is, the thickness. If the gap between the counterweight and the hoistway wall is narrow, it is difficult to attach the rear link with the counterweight still installed, because it is screwed in the direction and protrudes before and after the counterweight .

  This invention is made in order to solve the above problems, and even when the gap between the hoistway walls is narrow, the connecting members can be easily retrofitted before and after the counterweight frame. The purpose is to obtain an elevator weight device.

  An elevator counterweight device according to the present invention is provided in a counterweight frame having a pair of side plates, a plurality of adjustment weights stacked in the counterweight frame, and a counterweight frame. Each side plate has a rail facing surface that faces the counterweight guide rail, and the deformation preventing device is balanced at the middle in the vertical direction. The enclosure has a surrounding body that surrounds the weight frame, and the enclosure is between a pair of mounting members disposed 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. A pair of connecting members, and each mounting member protrudes from both ends of the base portion in contact with the corresponding rail facing surface and the base portion in the front-rear direction of the counterweight frame, and A pair of protrusions that form an obtuse angle with respect to Each connecting member has a connecting portion disposed between the pair of mounting members, and a pair of connecting portions provided at both ends of the connecting portion and inclined with respect to the connecting portion. Each connecting portion is overlapped with the corresponding protruding portion, and fastened to the corresponding protruding portion with a fastener.

  An elevator counterweight device according to the present invention includes: a pair of attachment members by fastening a projecting portion that forms an obtuse angle with respect to a base portion and a connecting portion that is inclined with respect to a transition portion with a fastener. Since the pair of connecting members are connected to form the enclosure, the connecting members can be easily attached to the front and rear of the counterweight frame even when the gap between the hoistway walls 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 apparatus 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. It is a horizontal sectional view which shows the modification from which the shape of the adjustment weight of FIG. 2 differs. It is a horizontal sectional view of the counterweight apparatus by Embodiment 2 of this invention. It is a front view which shows the principal part of the counterweight apparatus of FIG. It is a horizontal sectional view which shows the modification from which the shape of the adjustment weight of FIG. 6 differs. It is a horizontal sectional view of the counterweight apparatus by Embodiment 3 of this invention. It is a horizontal sectional view of the counterweight apparatus by Embodiment 4 of this 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. It is a horizontal sectional view of the counterweight device of FIG. It is a horizontal sectional view in the position below FIG. 13 of the counterweight apparatus of FIG. It is a horizontal sectional view in the position below 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 FIG.
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 in the upper part of the hoistway 1. A machine table 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 main body 6. The hoisting machine main body 6 includes a hoisting machine motor that rotates the driving sheave 5 and a hoisting machine brake that brakes the rotation of the driving sheave 5.

  A deflecting wheel 7 is attached to the machine base 3. A suspension body 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 counterweight 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 body 8, and ascend and descend in the hoistway 1 as the drive sheave 5 rotates.

  In the hoistway 1, a pair of car guide rails 11 that guide the raising and lowering of the car 9 and a pair of counterweight guide rails 12 that guide the raising 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 cross-sectional view of the counterweight device 10 of FIG. 1, FIG. 3 is a front view showing the main part of the counterweight device 10 of FIG. 2, and FIG. 4 is an enlarged cross-sectional view of the main part of FIG. It is. The counterweight device 10 is disposed 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 adjustment weights 22, a plurality of counterweight guide devices (not shown), a pair of intermediate stoppers 23, and a deformation prevention device 24. Yes.

  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 in parallel to each other on both sides in the width direction of the counterweight frame 21 (left and right direction in FIGS. 2 and 3). The lower frame is disposed horizontally between the lower ends of the side plates 25. The upper frame is disposed horizontally between the upper ends of the side plates 25. The second end of the suspension body 8 is connected to the upper frame.

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

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

  The adjustment weight 22 is supported on the lower frame. The adjustment weight 22 is stacked in the vertical direction within the counterweight frame 21. Furthermore, both end portions of each adjustment weight 22 are disposed in the side plate 25. Thereby, the adjustment weight 22 is held in the counterweight frame 21.

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

  Each intermediate stopper 23 is fixed to an intermediate portion in the vertical direction of the corresponding side plate 25 by, for example, a bolt. In addition, each intermediate stopper 23 faces the corresponding counterweight guide rail 12 via a gap. Further, the intermediate stopper 23 comes into contact with the counterweight guide rail 12 when the counterweight guide rail 12 bends due to vibration during an earthquake. Thereby, the force applied to the counterweight guide rail 12 during an earthquake is dispersed.

  The deformation preventing device 24 is provided on the counterweight frame 21 and prevents the side plate 25 from being deformed. The deformation preventing device 24 includes a rectangular frame-shaped enclosure 26 and a pair of supports 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 the enclosure body 26 from moving downward relative to the counterweight frame 21.

  Each support body 27 is fixed to the front surface portion 25b and protrudes from the front surface portion 25b to the front of the counterweight frame 21. The surrounding body 26 is supported on a support body 27. As the support body 27, a bolt or a pin is used. For example, a low head bolt is used as the bolt. For example, a spring pin 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 protrude forward of the counterweight frame 21 than the surrounding body 26. For this reason, the surrounding body 26 may be provided with an expansion portion for expanding the area in contact with the support body 27.

  The enclosure 26 is made of metal, for example, steel. In addition, the surrounding body 26 includes a pair of attachment members 28 and a pair of connecting members 29. The attachment members 28 are disposed on both sides of the counterweight frame 21 in the width direction. The connecting member 29 connects the pair of attachment 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 base portion 28 a and a pair of flat protrusion portions 28 b. The base 28a is overlapped with and in contact with the corresponding rail facing surface 25d.

  The projecting portions 28 b project obliquely from the both ends of the base portion 28 a 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 protruding portion 28 b is inclined with respect to the width direction of the counterweight frame 21. Further, the protruding portion 28b forms an obtuse angle with respect to the base portion 28a. Each attachment member 28 is configured by bending a single rectangular flat plate.

  Each connecting member 29 has an elongated rectangular flat crossover portion 29a and a pair of connecting portions 29b. Each crossover portion 29 a is disposed between the pair of attachment members 28 along the width direction of the counterweight frame 21. Further, in this example, the pair of connecting portions 29 a 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 part 29b is provided at both ends of the crossover part 29a. Each connection portion 29b is inclined with respect to the corresponding crossover portion 29a. Furthermore, each connection part 29b makes an acute angle with respect to the corresponding transition part 29a.

  Each connection part 29b is overlaid on the corresponding protrusion part 28b. 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 a bolt and a nut is used. Moreover, a bolt may be used as each fastener 30, and the screw hole may be provided in the protrusion part 28b.

  When the deformation preventing device 24 is added to the existing counterweight device 10, a hole or a screw hole is 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. In addition, the attachment member 28 is fixed to both ends of the front connection member 29 by the fastener 30. Then, the connecting member 29 on the front side is set on the support body 27, and the attachment member 28 is brought into contact with the rail facing surface 25d.

  In this state, the connecting portion 29b of the connecting member 29 on the rear side is overlapped with the corresponding protruding portion 28b. And the connection part 29b of the back side connection member 29 is fixed to the corresponding protrusion part 28b with the fastener 30. FIG.

  In such a counterweight device 10, the protruding portion 28 b is inclined with respect to the base portion 28 a, and the connection portion 29 b is inclined with respect to the transition portion 29 a, so the thickness direction of the counterweight device 10 ( (Up and down direction in FIG. 2) The protrusion of the fastener 30 to the outside is suppressed, and the connecting member 29 can be easily placed in front of and behind the counterweight frame 21 even when the gap between the counterweight device 10 and the hoistway wall 1a is narrow. Can be retrofitted to.

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

  Furthermore, each protrusion 28b protrudes obliquely outward from the corresponding base 28a in the width direction of the counterweight frame 21, and each connection 29b forms an acute angle with respect to the corresponding transition 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 25 b, the support body 27 is attached to the counterweight frame 21 from the side opposite to the hoistway wall 1 a, and the enclosure body 26 is more securely attached to the counterweight frame 21. Can be supported.

  Further, since bolts or pins are used as the support body 27, the support body 27 can be attached to the side plate 25 by a simple drilling process.

  In FIG. 2, the dimension of each adjustment weight 22 in the width direction (vertical direction in FIG. 2) is small 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 preventing device 24 according to the first embodiment uses an adjustment weight 22 having a rectangular planar shape, that is, an adjustment weight 22 having a constant width direction dimension. It can also be applied to cases.

Embodiment 2. FIG.
Next, FIG. 6 is a horizontal sectional view of a counterweight device 10 according to Embodiment 2 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 body 27 of the first embodiment is omitted. In the second embodiment, the pair of intermediate stoppers 23 also serves as a support. That is, the surrounding body 26 is supported by the intermediate stopper 23. Other configurations are the same as those in 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, and the deformation preventing device 24 can be simplified more easily while reducing the number of parts. Can be retrofitted.

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

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

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

  In such a counterweight device 10, each connection portion 29 b has an obtuse angle with respect to the corresponding transition portion 29 a, so that the fastening operation of the fastener 30 can be easily performed.

Embodiment 4 FIG.
Next, FIG. 10 is a horizontal sectional view of a counterweight device 10 according to Embodiment 4 of the present invention. In the fourth embodiment, the support body 27 of the third embodiment is omitted. In the fourth embodiment, the pair of intermediate stoppers 23 also serves as a support. That is, the surrounding body 26 is supported by the intermediate stopper 23. Other configurations are the same as 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, and the deformation preventing device 24 can be simplified more easily while reducing the number of parts. Can be retrofitted.

  In addition, for example, when the counterweight frame 21 is tightened by the surrounding body 26 by connecting the attachment member 28 and the connecting member 29, the support body may be omitted.

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

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

  The wedge front surface 31b, which is the surface of the wedge member 31 that faces 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 connection part 29b is connected to the protrusion part 28b by the one fastener 30 arrange | positioned next to the abutting part 29d. The support is omitted. Other configurations are the same as those in the first embodiment.

  In such a counterweight device 10, by tightening the fastener 30, the abutting portion 29 d moves to the protruding portion 28 b side along the inclined surface 31 a, and the attachment member 28 moves to the side plate 25 side via the wedge member 31. Pressed to. Thereby, the fall of the surrounding body 26 can be prevented without using a support body. Further, the generated load is supported by the attachment 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 attachment member.
Further, the wedge portion may be provided on only one of the pair of attachment members or on both.
Furthermore, in the above example, the case where the deformation preventing device is added to the existing counterweight device has been described. However, the present invention can also be applied to a new counterweight device. In this case, the deformation preventing device can be easily replaced.
Furthermore, the elevator layout and roping method 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 a counterweight device is disposed between a side surface of a car and a hoistway wall when viewed from directly above.
Further, the present invention can be applied to various types of elevators such as machine room-less elevators, double deck elevators, and one-shaft multi-car elevators. The one-shaft multi-car system is a system in which the upper car and the lower car arranged directly below the upper car are independently raised and lowered on a common hoistway.

  DESCRIPTION OF SYMBOLS 10 Counterweight apparatus, 12 Counterweight guide rail, 21 Counterweight frame, 23 Intermediate stopper (support), 24 Deformation prevention apparatus, 25 Side plate, 25a Side surface part, 25b Front surface part, 25c Back surface part, 25d Opposite rail Surface, 26 Enclosure, 27 Support, 28 Mounting member, 28a Base, 28b Protruding part, 29 Connecting member, 29a Crossing part, 29b Connection part, 29d Abutting part, 30 Fastener, 31 Wedge member (wedge part), 31a Inclined surface.

Claims (9)

A counterweight frame having a pair of side plates,
A plurality of adjusting weights stacked in the counterweight frame; and a deformation preventing 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 preventing device has a surrounding body that surrounds the counterweight frame at an intermediate portion in the vertical direction.
The go body is
A pair of mounting members disposed 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 is
A base 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 respect to the base portion,
Each of the connecting members is
A crossover disposed between the pair of attachment members;
A pair of connecting portions provided at both ends of the crossover portion and inclined with respect to the crossover portion;
Each said connection part is piled up on the said corresponding protrusion part, The counterweight apparatus of the elevator currently fastened by the fastener to the said corresponding protrusion part. Each of the protruding portions protrudes obliquely outward from the corresponding base portion in the width direction of the counterweight frame,
The elevator counterweight device according to claim 1, wherein each of the connecting portions forms an acute angle with respect to the corresponding crossing portion. Each protruding portion protrudes obliquely from the corresponding base portion to the inner side in the width direction of the counterweight frame,
The elevator counterweight device according to claim 1, wherein each of the connecting portions forms an obtuse angle with respect to the corresponding crossing portion. The deformation preventing device includes:
4. The apparatus according to claim 1, further comprising a support body that is attached to the counterweight frame and prevents the enclosure body from moving downward relative to the counterweight frame. 5. The elevator counterweight device described. Each said side plate
A side surface provided with the rail facing surface;
A front portion projecting inward in the width direction of the counterweight frame from an end of the side portion on the front side of the counterweight frame;
A back portion projecting inward in the width direction of the counterweight frame from an end of the side portion on the rear side of the counterweight frame;
The elevator counterweight device according to claim 4, wherein the support is fixed to the front portion.   The elevator counterweight device according to claim 5, wherein the support is a bolt.   The elevator counterweight device according to claim 5, wherein the support is a pin. A pair of intermediate stoppers that are opposed to the counterweight guide rails are fixed to an intermediate portion in the vertical direction of the pair of side plates,
The elevator counterweight device according to claim 4, wherein the pair of intermediate stoppers also serves as the support. At least one of the attachment members is provided with a wedge portion having a pair of inclined surfaces,
Each connecting portion on the side corresponding to the wedge portion is provided with an abutting portion in contact with the inclined surface,
3. The elevator counterweight device according to claim 2, wherein the attachment member is pressed against the side plate through the wedge portion by tightening the fastener. 4.

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