JP2007223695A - Counterweight device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a counterweight device for an elevator, capable of restricting deformation of vertical frames that may occur at the time of an earthquake, and achieving low cost and simplicity of installation work by reducing the number of parts and using common parts for counterweights of different sizes. <P>SOLUTION: The counterweight device 1 for an elevator is provided with a pair of right and left vertical frames 21 for outer frames 2 composed of four of upper, lower, right, and left frames, a plurality of adjusting weights 3 provided between the pair of right and left vertical frames 21, and engagement mechanisms 3a and 5 to engage both ends of the adjusting weights 3 with the right and the left vertical frames 21, and provide the adjusting weights 3 with the function of anti-earthquake members to prevent opening of the right and the left vertical frames 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator balancing weight device that moves up and down in balance with an elevator car.

  In a conventional elevator balancing weight device, in order to prevent the pair of vertical frames from being deformed in the left-right direction due to an earthquake and to prevent the stacked weights (multiple weights) from falling off, A thick plate made of an earthquake-resistant member is interposed between laminated weights, a screw hole is provided at the end of the thick plate, and a bolt is hinged through a vertical column in the screw hole, thereby fastening the thick plate and the vertical frame. There is something like that (see, for example, Patent Document 1).

JP 2001-253667 A

  The conventional elevator counterweight device has the following problems. 1. Since there are counterweight devices of various sizes, it is necessary to match the size of the thick plate made of the earthquake-resistant member with the size of the counterweight, so that the types of planks become enormous. 2. Since one or more thick plates are used to prevent opening apart from the stacked weights, the number of parts during installation increases. 3. Since one or more thick plates are fixed to the vertical frame as opening stoppers between the stacked weights, the installation work becomes complicated. 4). Since the end of one or more thick plates is threaded, productivity is poor and processing costs are high. 5. Since the bolts are tightened from the outside of the vertical frames on both sides to the screw portions of the thick plate, the vertical frame may be deformed if a gap is generated between the vertical frame and the thick plate.

  The present invention has been made to solve the above-described problems, and can prevent deformation of the vertical frame that occurs when an earthquake occurs, prevent the weight from falling off, reduce the number of parts, and change the size of various sizes. It is an object of the present invention to provide an elevator balancing weight device that can reduce the cost and simplify the installation work by sharing parts with the weighting device.

  In the elevator balancing weight device according to the present invention, a pair of left and right vertical frames of the outer frame composed of four upper, lower, left and right frames, a plurality of weights provided between the pair of left and right vertical frames, and a plurality of weights An engagement mechanism is provided that engages the ends of the weight and the pair of left and right vertical frames, and provides a function of an earthquake-resistant member that prevents the pair of left and right vertical frames from opening to a plurality of weights.

  According to the present invention, it is possible to eliminate the need for a thick plate made of an earthquake-resistant member that prevents a plurality of weights from being deformed by a pair of vertical frames opening in the left-right direction.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an elevator balancing weight device according to Embodiment 1 of the present invention, and FIG. 2 is a schematic view showing an engaging portion between an adjusting weight and a vertical frame of the elevator balancing weight device according to Embodiment 1. FIG.
In the figure, reference numeral 1 denotes an elevator balance weight device engaged with elevator car suspension means (not shown), which moves up and down against the elevator car and keeps balance with the elevator car. 2 is composed of four frames, upper, lower, left, and right, and an outer frame of the upright quadrilateral counterweight device 1 formed by connecting the ends of the four frames at right angles, and the upper end is connected to the suspension means. Yes. Reference numeral 3 denotes a plurality of weights that are provided in the outer frame 2 and make up the weight of the counterweight device 1, in which rectangular bar-shaped castings extending in the left-right direction are stacked in a line in the vertical direction. Hereinafter, detailed configurations of the outer frame 2 and the plurality of weights 3 of the counterweight device 1 will be described.

Reference numeral 20 denotes a pair of upper and lower horizontal frames of the outer frame 2 that extend in the horizontal direction and form the upper and lower ends of the counterweight device 1, each of which is in the same direction as the bottom side 20 a and both ends on the long side of the bottom side 20 a in order to maintain strength. It is a U-shaped cross section composed of both side edges 20b bent at right angles to each other. The pair of upper and lower horizontal frames are arranged so that the opening sides face each other. Reference numeral 20c denotes an engagement hole provided at the center of the bottom 20a on the upper side of the pair of upper and lower horizontal frames 20 and is connected to the suspension means (not shown).
Reference numeral 21 denotes a pair of left and right vertical frames of the outer frame 2 that extend in the vertical direction and form the left and right ends of the counterweight device 1, each of which has a base 21 a and both ends on the long side of the base 21 a in the same direction to maintain strength. It is a U-shaped cross section composed of both side edges 21b that are bent at right angles to each other. Further, the pair of left and right vertical frames 21 are arranged so that the opening sides face each other. Here, the connection configuration of the pair of left and right vertical frames 21 and the pair of upper and lower horizontal frames 20 is such that both sides 21b of the vertical frame 21 are fitted inside the both sides 20b of the horizontal frame 20 at each end. The bolts and nuts 4 are brought into contact with each other and engaged with a through hole penetrating the contact surface.
Here, the lower sides of the pair of upper and lower horizontal frames 20 are in contact with the lower surfaces of the plurality of weights 3 and hold the weights 3 from below. Further, the bottom side 21a and both side sides 21b of the pair of left and right vertical frames 21 are opposed to the end surface and both side surfaces (front and rear surfaces) of the plurality of weights 3, respectively, to suppress the front, rear, left and right sides of the plurality of weights 3. . Thereby, the plurality of weights 3 are provided in the outer frame 2 and only the uppermost stage is movable in the vertical direction.
21c is a pair of right and left weight-increasing notches that are recessed in the left-right direction on the front side of each side 21b of the pair of vertical frames 21, and the width between the notch bottoms (left-right width) is the weight. The notch width (vertical width) is wider than the vertical thickness of the weight 3. Thus, the plurality of weights 3 can pass between the pair of left and right cutouts 21c.
Here, in the above configuration, when a plurality of weights 3 which are heavy objects are shaken in a horizontal direction due to an earthquake or the like, the pair of vertical frames 21 are not strong enough to hold the plurality of weights 3 and prevent falling off. is there. Conventionally, a reinforcing member made of a thick plate that connects between the pair of left and right vertical frames 21 is provided in the middle portion of the pair of left and right vertical frames 21 to prevent the pair of left and right vertical frames 21 from opening in the left and right direction. .

The most characteristic feature of the present invention is the following configuration that does not require the above-described conventional reinforcing material.
Reference numeral 5 denotes an engagement mechanism composed of a pair of left and right T-shaped ribs projecting at the center of the inner surface of each of the bottom sides 21a of the pair of left and right vertical frames 21, from the lower ends of the pair of left and right vertical frames 21 to the lower ends of the pair of left and right cutouts 21c. It is provided up to the height. The pair of left and right T-shaped ribs 5 each have a T-shaped cross section composed of a head and a foot extending in the vertical direction, the head is opposed to the inner surface of the base 21a, and the tip of the foot is connected perpendicularly to the center of the inner surface of the base 21a. Yes. 3a is an engagement mechanism comprising a T-shaped notch portion having a T-shaped cross section provided perpendicularly from the upper surface to the lower surface at the center of both left and right end surfaces of the plurality of weights 3, and a pair of left and right T-shaped ribs 5 are provided. It is slidably fitted. As a result, the pair of left and right vertical frames 21 and both ends of the plurality of weights 3 are restrained in the horizontal direction.

Here, the attaching / decreasing weight 3 is attached to the counterweight device 1 by first passing the adjusting weight 3 between the pair of left and right notches 21c, and then passing the pair of left and right T-shaped notches 3a to the pair of left and right T-shaped ribs. 5 is fitted from the upper end, and then the weight 3 is dropped downward.
Thus, the plurality of weights 3 can be mounted in a state where the counterweight device 1 is connected to the suspension means and suspended, and the weight of the counterweight device 1 can be adjusted and installed.

  According to the counterweight device 1 configured as described above, the T-shaped rib 5 provided on each of the pair of left and right vertical frames 21 and the T-shaped notch provided on each of the left and right end surfaces of the plurality of adjusting weights 3. By engaging with the portion 3a and restraining each other in the horizontal direction, a function of a reinforcing material that prevents the pair of vertical frames 21 from deforming in the left-right direction can be provided in all the plurality of weights 3. Thus, when the plurality of weights 3 are rolled due to an earthquake or the like, it is possible to prevent the pair of left and right vertical frames 21 from being deformed and the plurality of weights 3 to be dropped from the outer frame 2.

  In addition, since the plurality of weights 3 itself have the function of a reinforcing material, they are made of an earthquake-resistant member that connects the middle portions of the pair of left and right vertical frames 21 that are separately required from the plurality of weights 3 as in the prior art. The reinforcement body is unnecessary and the number of parts is reduced.

  Further, as in the prior art, a reinforcing material is interposed between the plurality of adjusting weights 3 at the time of installation, and the work of threading a hole on the reinforcing material end surface to be hinged to a pair of left and right vertical frames can be eliminated. Labor saving. Further, deformation of the pair of left and right vertical frames 21 that may occur when the reinforcing material is hinged to the pair of left and right vertical frames 21 can be prevented.

  Further, the plurality of weights 3 are cast products, and casting into each shape eliminates the need for additional processing and improves productivity.

  By the way, it goes without saying that the provision of the T-shaped rib 5 can be carried out even if the both side sides 21b of the pair of left and right vertical frames 21 are omitted.

Embodiment 2. FIG.
FIG. 3 is a plan view showing the vertical frame and the weight of the elevator balancing weight device according to Embodiment 2 of the present invention, and FIG. 4 shows the relationship between the vertical frame and the weight of the elevator balancing weight device according to Embodiment 2. It is a perspective view which shows a joint part.
In the figure, 22 is a pair of left and right vertical frames in which the T-shaped ribs are omitted, and 22b is an engagement mechanism comprising both sides of the pair of left and right vertical frames 22, and has a cross-sectional section C having an inclination angle with a narrower interval on the tip side. It is a letter shape. Reference numeral 3b denotes an engagement mechanism having a pair of inclined surfaces in which both side surfaces (front surface and rear surface) of the left and right ends of the plurality of weights 3 are cut out in a substantially triangular shape, and both sides 22b of the pair of vertical frames 22 are provided. The angle is the same as the inclination angle, and is fitted between the both sides 22b. As a result, the pair of left and right vertical frames 22 and both ends of the plurality of weights 3 are restrained in the horizontal direction.

  According to the counterweight device configured as described above, the same effects as those of the first embodiment can be obtained, the T-shaped rib 5 and the T-shaped notch 6 can be omitted, and the simplification of parts and cost reduction can be achieved. it can.

Embodiment 3 FIG.
FIG. 5 is a diagram corresponding to FIG. 3 in the third embodiment of the present invention, and FIG. 6 is a diagram corresponding to FIG. 4 in the third embodiment.
In the figure, reference numeral 23 denotes a pair of left and right vertical frames in which the T-shaped ribs are omitted, and 23c denotes an engagement mechanism composed of convex sides formed by bending the leading ends of both side edges 23b of the pair of left and right vertical frames 23 inward. . Reference numeral 3c denotes an engagement mechanism including a constricted portion provided by cutting out both side surfaces in the vicinity of both left and right ends of the plurality of weights 3 and the convex side 23c is fitted therein. As a result, the pair of left and right vertical frames 23 and both ends of the plurality of weights 3 are restrained in the horizontal direction.

  According to the counterweight device configured as described above, the same effects as those of the first and second embodiments can be obtained, and the convex side 23c and the constricted portion 3c can be easily manufactured. The apparatus 1 can be manufactured more easily and the cost can be reduced.

Embodiment 4 FIG.
FIG. 7 is a plan view showing the connecting portion of the adjusting weight of the elevator balancing weight device according to Embodiment 4 of the present invention.
In the figure, reference numeral 34 denotes a two-part dividing weight that is divided into right and left at the center part, and 34a is a connecting part for connecting the two-part dividing weight 34, for example, keys that mesh with each other as shown in FIG. In this configuration, even if each of the two-divided weights 34 is moved in the horizontal direction, the connection does not come off, and the connection can be removed by moving one of them up and down.
Here, the mounting method of the two-part dividing weight 34 to the counterweight device 1 is as follows. First, one end of the two-part adjusting weight 34 is fitted into one of the pair of left and right vertical frames 21 and dropped. Next, similarly, the other of the two split type weights 34 is fitted into the other of the pair of left and right vertical frames 21 and dropped, and then the connecting portion 34a is connected.

According to the counterweight device configured as described above, the same effects as those of the first to third embodiments can be obtained, and each of the two-part adjusting weights 34 has a weight of one of the conventional weights. Since it is halved, it is easier to carry, and the mounting work of a plurality of weights can be made easier.
Further, if the two-divided weight 34 is applied to the configuration shown in the first embodiment, the weight 34 is omitted from the notch 21c for inserting the weight in the pair of left and right vertical frames 21 as shown in FIG. It can be installed. As a result, the pair of left and right vertical frames 21 can be easily manufactured and the cost can be reduced, and the strength is not lowered because notches are not provided.

  Incidentally, the configuration of the connecting portion 34a is not limited to the key shape as described above, and it goes without saying that any configuration can be implemented as long as it does not deviate from front to back and left and right when connected.

Embodiment 5 FIG.
FIG. 8 is a cross-sectional view showing the main parts of an adjusting weight and a vertical frame of an elevator balancing weight device according to Embodiment 5 of the present invention, and FIG. 9 is a view corresponding to FIG. is there. The fifth embodiment is an application of the third embodiment.
In the fifth embodiment, the cross-sectional shape of the pair of constricted portions 3c shown in the third embodiment is circular, and the shaft 3 can be rotated while the weight 3 is fitted to the pair of left and right vertical frames 23. It is. Thereby, it becomes easier to mount the plurality of weights 3 on the pair of left and right vertical frames 23, and the installation work of the elevator balancing weight device can be made easier.

1 is a perspective view showing an elevator balancing weight device according to Embodiment 1 of the present invention. FIG. It is a perspective view which shows the fitting of the vertical frame of the elevator balance weight apparatus in Embodiment 1 of this invention, and an adjustment weight. It is a top view which shows the vertical frame and adjustable weight of the elevator balance weight apparatus in Embodiment 2 of this invention. It is a perspective view which shows the fitting of the vertical frame of the balance weight apparatus of the elevator in Embodiment 2 of this invention, and an adjustment weight. FIG. 6 is a view corresponding to FIG. 3 in Embodiment 3 of the present invention. FIG. 4 is a diagram corresponding to FIG. 4 in Embodiment 3 of the present invention. It is a top view which shows the connection part of the adjustable weight of the balance weight apparatus of the elevator in Embodiment 4 of this invention. It is sectional drawing which shows the principal part of the adjustable weight of the elevator balance weight apparatus in Embodiment 5 of this invention, and a vertical frame. FIG. 8 is a view corresponding to FIG. 7 illustrating a state in which the weight of the adjusting weight is rotated.

Explanation of symbols

1 counterweight device,
2 outer frame,
20 horizontal frame,
20a The bottom of the horizontal frame,
20b on both sides of the horizontal frame,
20c engagement hole,
21, 22, 23, vertical frame 21a, bottom of vertical frame,
21b, 22b, 23b, both sides of the vertical frame,
21c Notch,
23c Convex side,
3, 34 Adjustable weight,
3a T cutout,
3b inclined surface,
3c constriction,
34a connecting part,
4 bolts and nuts,
5 T-shaped ribs,

Claims (8)

A pair of upper and lower horizontal frames;
A pair of left and right vertical frames connected to the pair of upper and lower horizontal frames;
A plurality of weights provided between the pair of left and right vertical frames;
An engagement mechanism that engages the ends of the plurality of weights and the pair of left and right vertical frames, and provides a function of an earthquake-resistant member that prevents the pair of left and right vertical frames from opening on the plurality of weights.
An elevator counterweight device characterized by comprising:   2. The engagement mechanism includes a T-shaped rib provided in a pair of left and right vertical frames, and a T-shaped notch that is provided at both ends of a plurality of weights and is fitted to the T-shaped rib. The elevator counterweight device described.   The engagement mechanism is composed of both sides of a pair of left and right vertical frames having an inclination angle with a narrower interval on the tip side, and both inclined surfaces provided on a plurality of weights and facing closely at the same angle as the both sides. The elevator balancing weight device according to claim 1.   The engagement mechanism includes a pair of vertical sides having a convex side formed by bending the tip end inward, and a constricted portion provided on a plurality of weights and fitted to the convex side. The elevator balancing weight device according to claim 1.   The elevator balancing weight device according to claim 3 or 4, wherein a notch portion for inserting an adjusting weight is provided at the upper part of both sides.   The elevator balancing weight device according to any one of claims 1 to 5, wherein the plurality of weights are divided into two parts, and each of the weights has a connecting portion for connecting the weights.   7. The elevator balancing weight device according to claim 6, wherein the connecting portions are key shapes that mesh with each other and restrain each other in the horizontal direction.   The elevator balancing weight device according to claim 4, wherein the plurality of weights have a constricted portion that is rotatable in a circular cross section.

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