JP2024030746A - Elevator counterweight support device - Google Patents

Abstract

To provide an elevator counterweight support device that can easily prevent a support body from falling over.SOLUTION: An elevator counterweight support device includes: a buffer stand 120 that is fixed to a bottom 2 of a hoistway 1; a support body 110 that is erected on the buffer stand 120 and supports a counterweight 10 from below; and a first fastener 121 that fixes the support body 110 to the buffer stand 120. The support body 110 has a column 111 and a first connecting portion 112 provided at a lower end of the column 111. The buffer stand 120 is provided with a first screw hole 123. The first fastener 121 is screwed into the first screw hole 123 through the first connecting portion 112.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to an elevator counterweight support device.

In the conventional elevator part replacement method, a first lifting device is installed at the top of the hoistway. After the existing counterweight and the car are lifted by the first and second lifting devices, the existing main rope is removed. Further, after the existing counterweight is lowered to the bottom of the hoistway by the first lifting device, the existing counterweight and the existing counter rail are removed (for example, Patent Document 1).

Japanese Patent Application Publication No. 11-349255

In the conventional elevator parts replacement method, it is necessary to separately install the first lifting device, which is time-consuming.

On the other hand, there is a method of replacing each part while supporting the counterweight from below using a pipe support as a support. In the case of this method, the operator needs to perform the work while taking care not to overturn the support.

The present disclosure has been made in order to solve the above-mentioned problems, and an object of the present disclosure is to obtain an elevator counterweight support device that can easily prevent the support from falling.

An elevator counterweight support device according to the present disclosure includes a pedestal fixed to the bottom of a hoistway, a support body erected on the pedestal and supporting the counterweight from below, and a first support body fixed to the pedestal. The support includes a support and a first connecting portion provided at the lower end of the support, the pedestal is provided with a first screw hole, and the first fastener is provided with a first screw hole. , is screwed into the first screw hole through the first connection part.

According to the elevator counterweight support device of the present disclosure, overturning of the support body can be easily prevented.

1 is a front view showing main parts of an elevator according to Embodiment 1. FIG. FIG. 2 is a front view showing an enlarged main part of FIG. 1; FIG. 3 is a bottom view of the support shown in FIG. 2; 3 is a plan view showing the support of FIG. 2. FIG. FIG. 7 is a front view showing main parts of an elevator according to a second embodiment. FIG. 6 is a front view showing an enlarged main part of FIG. 5; FIG. 7 is a front view showing a state in which the recess shown in FIG. 6 is covered with a cap. FIG. 7 is a front view showing main parts of an elevator according to Embodiment 3; FIG. 9 is a left side view showing an enlarged main part of FIG. 8;

Embodiments will be described below with reference to the drawings.

Embodiment 1.
FIG. 1 is a front view showing essential parts of an elevator according to Embodiment 1, and shows a state during maintenance work.

In FIG. 1, a hoistway 1 of an elevator is provided with a counterweight 10, a pair of guide rails 21, a shock absorber stand 120, a counterweight shock absorber 22, and a support device main body 100.

The counterweight 10 is a weight for balancing an elevator car (not shown). The shock absorber stand 120 is fixed to the bottom 2 of the hoistway 1. A pair of guide rails 21 are respectively erected on the shock absorber stand 120 and guide the counterweight 10 as it moves up and down.

The counterweight shock absorber 22 is installed on the shock absorber stand 120. The counterweight buffer 22 cushions the impact when the counterweight 10 collides with the bottom 2 of the hoistway 1.

The counterweight 10 includes a weight main body 11, a counterweight frame 12, a plurality of guide shoes 13, and a spacer 14.

The weight main body 11 is configured by stacking a plurality of weights. The counterweight frame 12 constitutes an outer frame of the counterweight 10. The weight main body 11 is held within a counterweight frame 12.

Each guide shoe 13 is fixed to the counterweight frame 12. Each guide shoe 13 is in contact with a corresponding guide rail 21.

The spacer 14 is fixed to the lower end of the counterweight frame 12. The spacer 14 hits the upper end of the counterweight buffer 22 when the counterweight 10 collides with the counterweight buffer 22.

The support device main body 100 is installed on the shock absorber stand 120 and supports the counterweight 10 when a main rope (not shown) is replaced, a pair of guide rails 21 are replaced, the counterweight 10 is replaced, etc. Furthermore, the support device main body 100 is removed from above the shock absorber stand 120 during normal operation of the elevator.

The counterweight support device of the first embodiment includes a support device main body 100 and a shock absorber stand 120. The pedestal in the first embodiment is a buffer pedestal 120.

The support device main body 100 includes a pair of supports 110, a plurality of first fasteners 121, and a plurality of second fasteners 131.

The support body 110 is erected on a shock absorber stand 120. The support body 110 supports the counterweight 10 from below. The support body 110 is, for example, a pipe support.

The plurality of first fasteners 121 fix the pair of supports 110 to the shock absorber stand 120. A pair of supports 110 are fixed to a shock absorber stand 120 on both sides of the counterweight shock absorber 22. As each first fastener 121, a bolt is used, for example.

The plurality of second fasteners 131 fix the pair of supports 110 to the counterweight 10. A pair of supports 110 are fixed to the lower end of the counterweight frame 12 on both sides of the spacer 14. As each second fastener 131, a bolt is used, for example.

FIG. 2 is a front view showing an enlarged main part of FIG. 1. FIG.

Each support body 110 has a column 111, a flange-shaped first connecting portion 112, and a flange-shaped second connecting portion 113.

The first connecting portion 112 is provided at the lower end of the support column 111. The first connecting portion 112 is, for example, a base plate of a pipe support. The second connecting portion 113 is provided at the upper end of the support column 111. The second connecting portion 113 is, for example, a receiving plate of a pipe support.

The shock absorber stand 120 is provided with a plurality of first screw holes 123. Each first fastener 121 is screwed into a corresponding first screw hole 123 through the first connecting portion 112.

A plurality of second screw holes 133 are provided in the counterweight frame 12. Each second fastener 131 is screwed into a corresponding second screw hole 133 through the second connecting portion 113.

FIG. 3 is a bottom view of the support 110 of FIG. 2. The first connecting portion 112 is provided with a plurality of first through holes 115 . A corresponding first fastener 121 is passed through each first through hole 115 .

FIG. 4 is a plan view showing the support 110 of FIG. 2. The second connecting portion 113 is provided with a plurality of second through holes 116 . A corresponding second fastener 131 is passed through each second through hole 116 .

Here, a method for installing the support device main body 100 will be explained.

First, the operator stands each support body 110 on the shock absorber stand 120 while overlapping each first screw hole 123 with the corresponding first through hole 115 .

Then, the operator screws each first fastener 121 into the corresponding first screw hole 123. Thereby, the support body 110 is fixed to the shock absorber stand 120.

Next, the operator lowers the counterweight 10 and places it on the pair of supports 110. Then, the operator overlaps each second screw hole 133 with the corresponding second through hole 116, and screws each second fastener 131 into the corresponding second screw hole 133. Thereby, the counterweight 10 is fixed to the support body 110.

After that, the operator replaces the main rope, the guide rail 21, the counterweight 10, etc.

In such a counterweight support device, a plurality of first screw holes 123 are provided in the shock absorber stand 120. Further, each support body 110 has a first connecting portion 112. Each first fastener 121 is screwed into a corresponding first screw hole 123 through the first connecting portion 112. Thereby, each support body 110 is fixed to the shock absorber stand 120.

Therefore, the counterweight support device of the first embodiment can easily prevent the support body 110 from falling.

Moreover, the existing shock absorber stand 120 is used as a pedestal. Therefore, there is no need to fix a new pedestal to the bottom 2 of the hoistway 1, and each support body 110 can be easily installed.

Further, the counterweight 10 is provided with a plurality of second screw holes 133. Further, each support body 110 has a second connecting portion 113. Each second fastener 131 is screwed into a corresponding second screw hole 133 through the second connecting portion 113.

Therefore, the counterweight 10 can be more stably supported on the pair of supports 110.

Embodiment 2.
FIG. 5 is a front view showing the main parts of the elevator according to the second embodiment. Further, FIG. 6 is a front view showing an enlarged main part of FIG. 5. As shown in FIG.

In the second embodiment, a pair of recesses 210 are formed in the shock absorber stand 120. A corresponding first connecting portion 112 is fitted into each recess 210. At least one side surface of the first connecting portion 112 is in contact with the inner wall surface of the recess 210.

Other configurations in the second embodiment are similar to those in the first embodiment.

In the second embodiment, a plurality of recesses 210 are formed in the shock absorber stand 120. A corresponding first connecting portion 112 is fitted into each recess 210. Therefore, it is possible to more reliably prevent each support body 110 from falling over.

Note that when the support device main body 100 is removed from the shock absorber stand 120, each recess 210 may be covered with a cap 230, as shown in FIG. This can prevent foreign matter from entering each recess 210. Further, it is possible to prevent foreign matter from entering each first screw hole 123.

Embodiment 3.
FIG. 8 is a front view showing the main parts of the elevator according to the third embodiment. Moreover, FIG. 9 is a left side view showing the main part of FIG. 8 in an enlarged manner.

Each support body 110 has a sandwiching part 220 instead of the second connecting part 113 in the first embodiment. The pinching portion 220 is provided at the upper end of the support column 111. The pinching portions 220 sandwich the counterweight 10 from both sides in the thickness direction of the counterweight 10. The thickness direction of the counterweight 10 is a direction perpendicular to the straight line connecting the centers of the pair of guide rails 21 when viewed from directly above, and a direction perpendicular to the plane of the paper of FIG.

The sandwiching portion 220 includes a flat receiving portion 221 and a pair of flat vertical portions 222 . The counterweight 10 is placed on the receiving portion 221. A pair of vertical parts 222 are provided on the receiving part 221. The pair of vertical parts 222 are opposed to each other and protrude upward perpendicularly to the receiving part 221.

Other configurations in the third embodiment are similar to those in the first embodiment.

In the third embodiment, a sandwich portion 220 is provided at the upper end of each support column 111. The sandwiching portions 220 sandwich the counterweight 10 from both sides in the thickness direction of the counterweight 10. Therefore, the counterweight 10 can be stably held on each support body 110 without using the plurality of second fasteners 131.

Note that in Embodiments 1 to 3, the number of supports 110 may be one or three or more.

Further, in the first to third embodiments, if the counterweight 10 can be stably supported on the support device main body 100, the counterweight 10 is not fixed to each support body 110 but can be simply placed on each support body 110. There may be.

Further, in Embodiments 1 to 3, each first through hole 115 may be a long hole, and alignment with the corresponding first screw hole 123 can be facilitated. Similarly, each second through hole 116 may be a long hole, and alignment with the corresponding second screw hole 133 can be facilitated.

Further, in the first to third embodiments, each second fastener 131 may be a combination of a stud bolt and a nut. In this case, when installing the counterweight support device, the operator first attaches the stud bolt to the second screw hole 133. Then, the operator passes the stud bolt attached to the second screw hole 133 through the second through hole 116 and fastens it using a nut. By using the stud bolt, the second screw hole 133 and the second through hole 116 can be aligned with the axis of the stud bolt as a reference, which facilitates the alignment.

Similarly, the first fastener 121 may be a combination of a stud bolt and a nut.

Although the preferred embodiments have been described in detail above, they are not limited to the embodiments described above, and various modifications may be made to the embodiments described above without departing from the scope of the claims. Variations and substitutions can be made.

Note that the aspects of each embodiment may be combined.

Hereinafter, various aspects of the present disclosure will be collectively described as additional notes.
(Additional note 1)
a pedestal fixed to the bottom of the hoistway;
a support that is erected on the pedestal and supports a counterweight from below; and a first fastener that fixes the support to the pedestal,
The support is
The pillar and
a first connecting portion provided at the lower end of the support column;
The pedestal is provided with a first screw hole,
The first fastener is screwed into the first screw hole through the first connecting part.
(Additional note 2)
The elevator counterweight support device according to supplementary note 1, wherein the pedestal is a buffer pedestal on which a counterweight buffer is installed.
(Additional note 3)
The elevator counterweight support device according to appendix 1 or 2, wherein the pedestal is formed with a recessed portion into which the first connecting portion is fitted.
(Additional note 4)
further comprising a second fastener for fixing the support to the counterweight,
The support body further includes a second connection part provided at the upper end of the support column,
The counterweight is provided with a second screw hole,
The elevator counterweight support device according to any one of Supplementary Notes 1 to 3, wherein the second fastener is screwed into the second screw hole through the second connecting portion.
(Appendix 5)
The support is
The elevator counterweight according to any one of Supplementary Notes 1 to 3, further comprising a sandwiching portion provided at the upper end of the support column and sandwiching the counterweight from both sides in the thickness direction of the counterweight. Support device.

1 Hoistway, 2 Bottom, 10 Counterweight, 22 Counterweight buffer, 100 Support device main body, 110 Support body, 111 Strut, 112 First connection part, 113 Second connection part, 120 Buffer stand (pedestal), 121 1st fastener, 123 1st screw hole, 131 2nd fastener, 133 2nd screw hole, 210 recess, 220 pinch portion.

Claims (5)

a pedestal fixed to the bottom of the hoistway;
a support that is erected on the pedestal and supports a counterweight from below; and a first fastener that fixes the support to the pedestal,
The support is
The pillar and
a first connecting portion provided at the lower end of the support column;
The pedestal is provided with a first screw hole,
The first fastener is screwed into the first screw hole through the first connecting part. The elevator counterweight support device according to claim 1, wherein the pedestal is a buffer stand on which a counterweight buffer is installed. 3. The elevator counterweight support device according to claim 1, wherein the pedestal has a recess into which the first connecting portion is fitted. further comprising a second fastener for fixing the support to the counterweight,
The support body further includes a second connection part provided at the upper end of the support column,
The counterweight is provided with a second screw hole,
The elevator counterweight support device according to claim 1 or 2, wherein the second fastener is screwed into the second screw hole through the second connecting portion. The support is
The elevator counterweight support device according to claim 1 or 2, further comprising a sandwiching portion provided at an upper end of the support column and sandwiching the counterweight from both sides in the thickness direction of the counterweight.