JPH1067478A - Elevator balance weight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator balance weight in which an aseismic property can be improved easily for a conventional balance weight. SOLUTION: A wire rope 8 is wound on the center parts of vertical frames 1a, 1b. In the wire rope 8, protection tubes 16 are inserted in the positions corresponding with the corner parts on both sides of the vertical frames 1a, 1b for reducing stress. One side of the wire rope 8 is connected to one side of a fastening metal fitting 11 by means of a wire clip 12, and the other side of the wire rope 8 is connected to one side of a stud 14 by means of a compression locking metal fitting 13. The tip of the stud 14 is passed through the other side of the fastening metal fitting 11 and the wire rope 8 is fastened by means of a nut 15, so that bending stress applied to the vertical frames 1a, 1b in case of an earthquake is dealt with, and a weight 4 coming-off phenomenon from a weight frame can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator counterweight.

[0002]

2. Description of the Related Art FIG. 7 is a front view showing an example of a conventional counterweight of an elevator, and FIG. 8 is a sectional view of FIG. 7 and 8 show a counterweight installed before the enforcement order of the Building Standards Law of July 14, 1980.

In FIGS. 7 and 8, the counterweight is
A weight frame 1 serving as a skeleton, a plurality of weights 4 stacked inside the weight frame 1 from below, a plurality of single rods 3 penetrating the upper end of the weight frame 1 and the single rod 3 The compression coil spring 10 fitted, and the guide shoes 5 attached to the left and right of the upper and lower ends of the weight frame 1
Etc.

The weight frame 1 is made of a grooved steel material and has a vertical bone 1a with the opening side of the steel material inside, and a vertical bone made of the same grooved steel material and symmetrically opposed to the vertical bone 1a. 1b, a pair of horizontal plates 2 provided on both sides of the upper and lower ends of these vertical bones 1a, 1b, and both ends are welded to the left and right vertical bones 1a, 1b. It is provided with a hitch plate 9 which is provided in a direction perpendicular to the paper surface with respect to the lower end of the plate 2 and whose upper surface is welded to the horizontal plate 2.

The weight 4 is manufactured from a thick steel plate by gas cutting or the like, and is stacked from above between the left and right vertical bones 1a and 1b constituting the weight frame 1. As shown in FIG. 8, both ends of these weights 4 are formed in a substantially convex shape, and the protrusions are loosely fitted into the grooves of the channel-shaped steel material to prevent the weights 4 from coming off from the weight frame 1. .

The hitch plate 9 has a single rod 3
A plurality of through-holes through which the lower part penetrates are formed in advance. At the upper end of the single rod 3, a lower end of a main rope (not shown) is fixed after being inserted, and at the lower part of the single rod 3, a compression coil spring 10 is loosely fitted from below, and at the lower end of the single rod 3, A spring seat (not shown) and a double nut are inserted. The compression coil spring 10 is compressed by the weight of the counterweight.

A guide shoe support 24 composed of angle iron and reinforcing ribs is fixed to the left and right of the upper and lower ends of the weight frame 1 with four bolts. On the outer surface side of these guide shoe supports 24, U-shaped guide shoes 5 in a plan view (not shown) are fixed with the opening side facing outward. The heads of the guide rails 25 indicated by alternate long and short dash lines are loosely fitted inside these U-shaped guide shoes 5 with a slight gap.

[0008] In order to comply with the revised standard in which the seismic standards are strengthened by the Building Standard Law enforcement ordinance described above, FIG. 9 or FIG.
The following earthquake-resistant measures were taken.

In FIG. 9, a strip 6 is provided before and after the middle part of the vertical bones 1a and 1b, and both ends of the strip 6 are welded to the vertical bones 1a and 1b. In FIG. 10, both screw studs 7a of the turnbuckle 7 are inserted into the upper portions of the vertical bones 1a and 1b, and these two screw studs 7a are inserted.
Is fastened by inserting the fastener 7b into the opposite portion of the second member.

In either case, in the event of a major earthquake, the weights of the stacked weights 4 cause the vertical bones 1a, 1b to be moved.
Is intended to eliminate the risk that the weight 4 will fall due to the middle portion of the body being curved outward.

[0011]

[Problems to be solved by the invention]
In the counterweight of the elevator shown in FIG. 9, not only the welding machine must be carried into the hoistway, but also the work becomes difficult because the rear side band plate 6 is close to the wall surface of the hoistway.

On the other hand, in the counterweight of the elevator shown in FIG. 10, not only must a hole for penetrating the stud 7a be machined, but even if the fastener 7 Since the position is located above the vertical bones 1a and 1b, the above-described bending prevention effect is inferior to the band plate 6 shown in FIG.

Further, it is difficult to form a hole for the above-mentioned stud 7a because the diameter of the hole is large (for example, 13 mm) on a work table. On the other hand, user demands for earthquake resistance are becoming more severe, reflecting the recent earthquake. Accordingly, an object of the present invention is to provide an elevator counterweight that can easily increase the earthquake resistance of an existing counterweight.

[0014]

According to a first aspect of the present invention, there is provided an elevator in which a plurality of weights are stacked between a pair of upright and opposed vertical bones. A wire rope is wrapped, one end of the connecting device is locked at one end of the wire rope, one end is locked at the other end of the wire rope, and the other end is inserted through the other side of the connecting device, and the wire rope is fastened with a fastener. And a first screw rod for tightening the vertical bone through the first screw rod.

Further, the invention according to claim 2 is characterized in that one side of the wire rope is locked to a connector via a wire clip.

The invention according to claim 3 is characterized in that the other side of the wire rope is locked to a screw rod via a compression fitting.

According to a fourth aspect of the present invention, there is provided a shaft rod through which one side of a wire rope is inserted, and a first pressing member which presses one side of the wire rope to one side of the connector with the shaft rod. It is characterized by being attached to one side of the tool.

According to a fifth aspect of the present invention, there is provided a counterweight of an elevator in which a plurality of weights are stacked between a pair of upright and opposed vertical bones, wherein the second weight is provided on an outer surface of an intermediate portion of the vertical bones. And a second screw rod for tightening the vertical bone is provided through the second pressing member.

Further, the invention according to claim 6 is characterized in that the wire rope or the second screw rod is locked to the vertical frame via a fixing bracket.

According to the first aspect of the present invention, the first screw rod inserted through the other side of the connecting member is tightened to reduce the weight falling due to the bending of the vertical bone due to the earthquake. Eliminate fear.

Further, in the second aspect of the present invention,
By tightening the first screw rod inserted through the connecting tool locked to the wire rope via the wire clip, the possibility of the weight falling due to the bending of the vertical bone due to the earthquake is eliminated.

According to the third aspect of the present invention,
By tightening the first screw rod locked to the wire rope via the compression fitting, the possibility of the weight falling due to the bending of the vertical bone due to the earthquake is eliminated.

Also, in the invention according to claim 4,
One side is wound around a shaft rod, and the wire rope pressed against the connecting tool by the first pressing member is tightened by the first screw rod, thereby eliminating the possibility of the weight falling due to the bending of the vertical bone due to the earthquake.

Further, in the invention according to claim 5,
By tightening the vertical bone with the second screw rod via the second pressing member, the possibility of the weight falling due to the bending of the vertical bone due to the earthquake is eliminated.

Further, in the invention according to claim 6, the fall of the wire rope or the second screw rod due to the earthquake is prevented by the fixing bracket.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an elevator counterweight according to an embodiment of the present invention. FIG.
1 is a partial front view showing a first embodiment of a counterweight of an elevator according to the present invention, which is shown in FIGS.
10 and FIG. 2, and FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 and also corresponds to FIG.

FIGS. 1 and 2 differ from FIGS. 7, 8, 9 and 10 shown in the prior art in the structure for reinforcing the weight frame. Therefore, parts not shown are the same as those in FIGS. 7 and 8, and the same elements are denoted by the same reference numerals and description thereof will be omitted.

That is, in the counterweight of the elevator shown in FIG. 1 and FIG. 2, in order to suppress the bending of the vertical bones 1a and 1b at the time of the occurrence of the earthquake, a wire rope is connected to the vertical bone through a fastener or the like. By winding around the outer periphery of the central part of 1a, 1b and tightening as described below, welding work and drilling are not required.

To this end, one end of a substantially U-shaped fastening member 11 is connected to one end of the wire rope 8 via a pair of wire clips 12. On the other hand, the other end of the wire rope 8 is fixed via a compression stopper 13 in which a base end of a stud 14 whose leading end is wound around the other side of the clamp 11 is omitted in detail.

The wire rope 8 has an inner diameter of 10 mm and an outer diameter of 10 mm, for example, when the outer diameter of the wire rope is 8 mm, in order to alleviate the stress concentration caused by the sharp bend caused by the corners of the vertical bones 1 a and 1 b. Four protective tubes 16 cut from 16 mm diameter industrial vinyl hoses are inserted in advance.

At the upper part of the wire rope 8, a fixing member 17 obtained by bending a steel plate for a spring into a substantially tulip shape is driven into the teeth of the channel steel, and at the lower part of the fixing member 17, the upper end of a binding band 18 is provided. Is fixed, and the lower end of this binding band 18 is
Wound around the wire rope 8.

In the thus configured elevator counterweight, the nut 15 is attached to the tip of the stud 14.
Are screwed together, and a nut 15 is also screwed on the outside of the fastener 11. Of these, the inner nut 15 is rotated to tighten the wire rope 8.

In the thus constructed elevator counterweight, welding and drilling operations inside the hoistway are not required, so that the operations can be performed easily and in a short time.

The temporary assembling of the wire rope 8 and the fasteners shown in FIGS. 1 and 2 can be performed in a factory in advance, and the inside of the hoistway requires only a fastening operation with a tool (spanner). Therefore, the reliability of the fixing portion between the wire clip 12 and the compression fitting 13 and the wire rope 8 can be improved.

In the above-described embodiment, a compression stopper 13 and a stud 14 may be used instead of the wire clip 12. Furthermore, depending on the rating of the counterweight, FIG.
The fastening portion shown in FIG. 2 may be applied to a plurality of locations.

FIG. 3 is a partially enlarged view showing a second embodiment of the counterweight of the elevator according to the present invention, and FIG.
FIG. 4 is a front view of FIG. 3. FIGS. 3 and 4 differ from FIGS. 1 and 2 in the fixing structure between the left end of the wire rope 8 and the fastener, and the fastener 11 shown in FIGS. 1 and 2 is substantially U-shaped. In contrast to the letter shape, the fastener 19 shown in FIGS. 3 and 4 is L-shaped without a bent portion on the left side.

Alternatively, a holding plate 21 is provided on the left side of the fastener 19.
A bolt 20 extends through the center of the holding plate 21. Furthermore, at each of the four corners of the holding plate 21,
21a is inserted, and the front end is screwed to the fastening fitting 19.
The distal end of the wire rope 8 is inserted between the fastening member 19 and the holding plate 21, and is wound twice around the bolt 20 so as to tighten the shaft of the bolt 20.

The end of the wire rope 8 wound around the shaft of the bolt 20 is tightened with a wrench on a nut screwed to the tip of the bolt 20, so that the presser plate 21 and the fastener are fastened.
At the same time, the nut 15 is fastened to the shaft of the bolt 20 by tightening the nut 15 screwed to the tip of the stud 14 inserted through the right end of the fastener 19.

In this case, the wire leap 8 and the bolt 20
Is wound around the shaft of the bolt 20, and no sharply bent portion is formed. Therefore, there is an advantage that the strength of the locking portion of the wire rope 8 can be prevented from lowering. The nominal diameter of the bolt 20 is preferably as large as possible in accordance with the outer diameter of the wire rope 8 for the above-described reason.

Next, FIG. 5 is a front view showing a third embodiment of an elevator counterweight according to the present invention, and corresponds to FIG. 1 shown in the first embodiment and corresponds to claim 5. FIG. 6 and FIG. 6 are BB sectional views of FIG.

FIGS. 5 and 6 are different from FIGS. 1 and 2 shown in the first embodiment in that the left and right vertical bones 1a and 1b are screwed with double screw bolts in order to prevent the bending of the vertical bones 1a and 1b. By tightening from outside, instead of wire rope,
A holding plate 22 is attached to the outer surface side of the vertical bones 1a and 1b.

That is, in FIG. 5 and FIG.
a, a holding plate symmetrically attached to the outer surface of the central part of 1b
Two screw bolts 23 are respectively provided before and after the 22, and the right and left vertical bones 1 a and 1 b are tightened by nuts screwed to the ends of the two screw bolts 23 from outside the holding plate 22. . The nut screwed inside the holding plate 22 is
It is tightened after tightening the outer nut.

Further, on the upper part of the double screw bolt 23, FIG.
Similarly to the above, a fixing bracket 17 is hammered into the teeth of the vertical bones 1a and 1b, and a lower portion of the binding band 8 having an upper end fixed to a lower portion of the fixing bracket 17 is wound around a wire rope 8. .

In the thus constructed elevator counterweight, similarly to the above-described first and second embodiments, no welding work or drilling work inside the hoistway is required, and the tightening weight is not required. Since it can be incorporated by a tightening operation using a tool, not only the work is facilitated, but also the number of parts can be reduced as compared with the fasteners shown in FIGS. Since the locking portion between the rope and the metal fitting is not formed, skill is not required, and the reliability of the tightened portions of the vertical bones 1a and 1b can be improved.

Also in this case, as in the first embodiment, depending on the rating and the outer shape of the counterweight, two sets of fasteners composed of the two screw bolts 23 and the holding plate 22 are attached to the upper and lower parts. Alternatively, the tightening force and reliability may be increased by increasing the vertical width of the holding plate 22 and tightening the holding plate 22 with the four double screw bolts 23.

Further, in place of the fixing bracket 17, as a means for preventing the displacement due to the vibration of the double screw bolts 23, the weight 4
For example, a band formed in a convex shape may be inserted between the right and left sides of the bracket, and both sides of the two screw bolts 23 may be locked before and after the band.

[0047]

As described above, according to the first aspect of the present invention,
In a counterweight of an elevator in which a plurality of weights are loaded between a pair of vertical bones that are erected and opposed, a wire rope is wound around an intermediate portion of the vertical bone, and one end of the connecting tool is attached to one end of the wire rope. The first threaded rod is engaged with the other end of the wire rope, and the other end is inserted into the other side of the connecting tool, and the first threaded rod is used to fasten the vertical bone through the wire rope with the fastener. By tightening the first screw rod inserted through the other side of the fixture, the risk of the weight falling due to the bending of the vertical bone due to the earthquake has been eliminated. An elevator counterweight can be obtained that can be raised.

Further, according to the second aspect of the present invention, one side of the wire rope is locked to the connecting tool via the wire clip, so that the wire rope passes through the connecting tool locked to the wire rope via the wire clip. By tightening the inserted first screw rod, the risk of the weight falling due to the bending of the vertical bone due to the earthquake was eliminated, so that the elevator that can easily increase the earthquake resistance against the existing counterweight is used. A counterweight can be obtained.

According to the third aspect of the present invention, the other side of the wire rope is locked to the screw rod via the compression fitting so that the other side of the wire rope is locked to the wire rope via the compression fitting. By tightening the 1 screw rod, the risk of falling of the weight due to the bending of the vertical bone due to the earthquake was eliminated,
It is possible to obtain an elevator counterweight that can easily increase the earthquake resistance with respect to the existing counterweight.

According to the fourth aspect of the present invention, the shaft rod into which one side of the wire rope is inserted, and the first pressing member for pressing one side of the wire rope to one side of the connecting tool with the shaft rod. Is attached to one side of the connecting tool, the one side is wound around a shaft rod, and the wire rope pressed against the connecting tool by the first pressing member is tightened with the first screw rod, thereby bending the vertical bone due to the earthquake. As a result, it is possible to obtain an elevator counterweight that can easily increase the earthquake resistance of an existing counterweight.

According to the fifth aspect of the present invention, in an elevator weight in which a plurality of weights are stacked between a pair of upright and opposed vertical bones, the elevator is mounted on an outer surface of an intermediate portion of the vertical bones. By attaching a second pressing member and attaching a second screw rod for tightening the vertical bone to the second pressing member, the vertical bone is tightened with the second screw rod via the second pressing member. By eliminating the possibility of the weight falling due to the bending of the vertical bone due to the earthquake, the existing counterweight
It is possible to easily obtain a counterweight of an elevator capable of improving earthquake resistance.

Further, according to the invention described in claim 6,
By locking the wire rope or the second screw rod to the vertical frame via the fixing bracket, the fall of the wire rope or the second screw rod due to the earthquake was prevented by the fixing bracket. Thus, it is possible to obtain an elevator counterweight that can easily increase the earthquake resistance.

[Brief description of the drawings]

FIG. 1 is a partial front view showing a first embodiment of a counterweight of an elevator according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partial front view showing a second embodiment of the counterweight of the elevator of the present invention.

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a front view showing a third embodiment of a counterweight of an elevator according to the present invention.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a front view showing an example of a conventional counterweight of an elevator.

FIG. 8 is a sectional view taken along the line CC in FIG. 7;

FIG. 9 is a front view showing an example different from FIG. 7 of the counterweight of the conventional elevator.

FIG. 10 is a front view showing an example different from FIGS. 7 and 9 of a counterweight of a conventional elevator.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Weight frame, 1a, 1b ... Vertical bone, 2 ... Horizontal plate, 3 ... Single rod, 4 ... Weight, 5 ... Guide shoe, 6 ... Strip plate, 7 ... Turnbuckle, 8 ... Wire rope, 9 ... Hitch plate , 10… compression coil spring, 11,19… clamping fitting,
12 ... wire rope, 13 ... compression fitting, 14 ... stud,
15… Nut, 16… Protective tube, 17… Fixing bracket, 18… Bundling band, 20… Bolt, 21,22… Presser plate, 23… Double screw bolt.

Claims (6)

[Claims] 1. An elevator counterweight in which a plurality of weights are stacked between a pair of upright and opposed vertical bones, a wire rope wound around an intermediate portion of the vertical bones, and a wire rope of the wire rope. A connecting tool whose one end is locked at one end, and one end locked at the other end of the wire rope, and the other end is inserted through the other side of the connecting tool and the vertical bone is fastened through the wire rope with a fastener. A counterweight for an elevator, comprising: a first screw bar to be tightened. 2. The counterweight of an elevator according to claim 1, wherein one side of the wire rope is locked to the connector via a wire clip. 3. The counterweight of an elevator according to claim 1, wherein the other side of the wire rope is locked to the screw rod via a compression fitting. 4. A shaft rod through which one side of the wire rope is inserted, and a first pressing member which presses one side of the wire rope to one side of the connector with the shaft rod are attached to one side of the connector. The counterweight of an elevator according to claim 1 or claim 3, wherein 5. A counterweight of an elevator in which a plurality of weights are stacked between a pair of upright and opposed vertical bones, wherein a second pressing member attached to an outer surface of an intermediate portion of the vertical bones is provided. And a second screw rod penetrating through the second pressing member and tightening the vertical bone. 6. The balancing of an elevator according to claim 1, wherein the wire rope or the second screw rod is locked to the vertical frame via a fixing bracket. Weight.