Elevator counterweight support device

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

[Technical Field]

[0001] The present disclosure relates to a counterweight support device for an elevator. [Background technology]

[0002] In a conventional elevator part replacement method, a first lifting device is installed at the top of the elevator shaft. Then, the existing counterweight and car are lifted up by the first and second lifting devices, and then the existing main rope is removed. Furthermore, after the existing counterweight is lowered to the bottom of the elevator shaft by the first lifting device, the existing counterweight and existing counter rail are removed (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-349255 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional elevator part replacement methods require the installation of a separate first lifting device, making the work time-consuming.

[0005] On the other hand, there is a method of replacing each part using a pipe support as a support, supporting the counterweight from below. In this method, the worker must work carefully to prevent the support from tipping over.

[0006] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an elevator counterweight support device that can easily prevent the support body from tipping over. [Means for solving the problem]

[0007] The elevator counterweight support device according to the present disclosure comprises a base fixed to the bottom of the elevator shaft, a support standing on the base and supporting the counterweight from below, and a first fastener for fixing the support to the base, the support having a support column and a first connecting part provided at the lower end of the support column, a first screw hole provided in the base, and the first fastener being screwed into the first screw hole through the first connecting part. The base has a recess formed therein into which the first connecting portion is fitted. . In addition, the elevator counterweight support device according to the present disclosure comprises a base fixed to the bottom of the elevator shaft, a support standing on the base and supporting the counterweight from below, and a first fastener fixing the support to the base, the support having a support pillar and a first connecting portion provided at the lower end of the support pillar, the base having a first screw hole, the first fastener being screwed into the first screw hole through the first connecting portion, and the support being provided at the upper end of the pillar and further having clamping portions that clamp the counterweight from both sides in the thickness direction of the counterweight. [Effects of the Invention]

[0008] According to the elevator counterweight support device of the present disclosure, the support body can be easily prevented from tipping over. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a front view showing the main parts of an elevator according to embodiment 1. [Figure 2] FIG. 2 is an enlarged front view showing a main part of FIG. 1. [Figure 3] FIG. 3 is a bottom view of the support of FIG. 2. [Figure 4] FIG. 3 is a plan view showing the support of FIG. 2. [Figure 5] FIG. 10 is a front view showing the main parts of the elevator according to the second embodiment. [Figure 6] FIG. 6 is an enlarged front view showing the main part of FIG. 5. [Figure 7] 7 is a front view showing a state in which a cap is placed on the recess in FIG. 6. FIG. [Figure 8] FIG. 10 is a front view showing the main parts of the elevator according to the third embodiment. [Figure 9] FIG. 9 is an enlarged left side view showing a main part of FIG. 8. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments will be described with reference to the drawings.

[0011] Embodiment 1 FIG. 1 is a front view showing the main parts of an elevator according to the first embodiment, showing a state during maintenance work.

[0012] In FIG. 1, a counterweight 10, a pair of guide rails 21, a buffer base 120, a counterweight buffer 22, and a support device main body 100 are provided in an elevator shaft 1.

[0013] Counterweight 10 is a weight used to balance an elevator car (not shown). Buffer base 120 is fixed to bottom 2 of elevator shaft 1. A pair of guide rails 21 are each erected on buffer base 120 to guide counterweight 10 as it ascends and descends.

[0014] The counterweight buffer 22 is installed on the buffer base 120. The counterweight buffer 22 reduces the impact when the counterweight 10 collides with the bottom 2 of the hoistway 1.

[0015] The counterweight 10 has a weight body 11, a counterweight frame 12, a plurality of guide shoes 13, and a spacer 14.

[0016] The weight body 11 is made up of multiple weights stacked on top of each other. The counterweight frame 12 forms the outer frame of the counterweight 10. The weight body 11 is held within the counterweight frame 12.

[0017] Each guide shoe 13 is fixed to the counterweight frame 12. Each guide shoe 13 contacts the corresponding guide rail 21.

[0018] The spacer 14 is fixed to the lower end of the counterweight frame 12. When the counterweight 10 collides with the counterweight shock absorber 22, the spacer 14 comes into contact with the upper end of the counterweight shock absorber 22.

[0019] The support device body 100 is installed on the buffer base 120 and supports the counterweight 10 when replacing the main rope (not shown), the pair of guide rails 21, the counterweight 10, etc. Furthermore, the support device body 100 is removed from the buffer base 120 during normal elevator operation.

[0020] The counterweight support device of the first embodiment includes a support device main body 100 and a shock absorber base 120. The shock absorber base 120 serves as the base in the first embodiment.

[0021] The stand device body 100 has a pair of supports 110 , a plurality of first fasteners 121 , and a plurality of second fasteners 131 .

[0022] The support 110 stands on a buffer base 120. The support 110 supports the counterweight 10 from below. The support 110 is, for example, a pipe support.

[0023] A plurality of first fasteners 121 fasten the pair of supports 110 to the shock absorber base 120. The pair of supports 110 are fixed to the shock absorber base 120 on both sides of the counterweight shock absorber 22. As each of the first fasteners 121, for example, a bolt is used.

[0024] A plurality of second fasteners 131 secure the pair of supports 110 to the counterweight 10. The pair of supports 110 are fixed to the lower end of the counterweight frame 12 on both sides of the spacer 14. Each of the second fasteners 131 is, for example, a bolt.

[0025] FIG. 2 is an enlarged front view showing the main part of FIG.

[0026] Each support 110 has a support post 111, a flange-shaped first connecting portion 112, and a flange-shaped second connecting portion 113.

[0027] 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 backing plate of a pipe support.

[0028] The shock absorber base 120 is provided with a plurality of first screw holes 123. Each first fastener 121 is threaded into a corresponding first screw hole 123 through the first connecting portion 112.

[0029] The counterweight frame 12 is provided with a plurality of second screw holes 133. Each second fastener 131 is threaded into the corresponding second screw hole 133 through the second connecting portion 113.

[0030] Fig. 3 is a bottom view showing 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 of the first through holes 115.

[0031] Fig. 4 is a plan view showing the support body 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.

[0032] Here, a method for installing the stand device main body 100 will be described.

[0033] First, the worker stands each support 110 on the buffer base 120 while aligning each first screw hole 123 with the corresponding first through hole 115 .

[0034] Then, the worker screws each of the first fasteners 121 into the corresponding first screw holes 123. This fixes the support body 110 to the buffer base 120.

[0035] Next, the worker lowers the counterweight 10 and places it on the pair of supports 110. Then, the worker aligns 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. This fixes the counterweight 10 to the supports 110.

[0036] Thereafter, the worker replaces the main rope, the guide rail 21, the counterweight 10, and so on.

[0037] In such a counterweight support device, a plurality of first screw holes 123 are provided in the shock absorber base 120. Furthermore, each support body 110 has a first connecting portion 112. Each first fastener 121 is threaded into the corresponding first screw hole 123 through the first connecting portion 112. In this way, each support body 110 is fixed to the shock absorber base 120.

[0038] Therefore, the counterweight support device of the first embodiment can easily prevent the support body 110 from tipping over.

[0039] In addition, the existing buffer base 120 is used as the base, so there is no need to fix a new base to the bottom 2 of the elevator shaft 1, and each support 110 can be easily installed.

[0040] The counterweight 10 is also provided with a plurality of second screw holes 133. Each support 110 has a second connecting portion 113. Each second fastener 131 is threaded into the corresponding second screw hole 133 through the second connecting portion 113.

[0041] Therefore, the counterweight 10 can be supported on the pair of supports 110 more stably.

[0042] Embodiment 2 Fig. 5 is a front view showing a main part of an elevator according to embodiment 2. Fig. 6 is an enlarged front view showing the main part of Fig. 5.

[0043] In the second embodiment, a pair of recesses 210 are formed in the shock absorber base 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.

[0044] Other configurations in the second embodiment are the same as those in the first embodiment.

[0045] In the second embodiment, a plurality of recesses 210 are formed in the shock absorber base 120. A corresponding first connecting portion 112 is fitted into each recess 210. This makes it possible to more reliably prevent each support body 110 from tipping over.

[0046] 7, in a state where the support device main body 100 is removed from the buffer base 120, each recess 210 may be covered with a cap 230. This makes it possible to prevent foreign matter from entering each recess 210. It also makes it possible to prevent foreign matter from entering each first screw hole 123.

[0047] Embodiment 3 Fig. 8 is a front view showing a main part of an elevator according to embodiment 3. Fig. 9 is a left side view showing an enlarged view of the main part of Fig. 8.

[0048] Each support 110 has a clamping portion 220 instead of the second connecting portion 113 in the first embodiment. The clamping portion 220 is provided at the upper end of the support 111. The clamping portion 220 clamps the counterweight 10 from both sides in the thickness direction of the counterweight 10. When viewed from directly above, the thickness direction of the counterweight 10 is a direction perpendicular to the line connecting the centers of the pair of guide rails 21, and is also a direction perpendicular to the plane of the paper in FIG.

[0049] The clamping portion 220 has a flat plate-shaped receiving portion 221 and a pair of flat plate-shaped vertical portions 222. The counterweight 10 is placed on the receiving portion 221. The pair of vertical portions 222 are provided on the receiving portion 221. The pair of vertical portions 222 face each other and protrude upward perpendicularly relative to the receiving portion 221.

[0050] Other configurations in the third embodiment are the same as those in the first embodiment.

[0051] In the third embodiment, a clamping portion 220 is provided at the upper end of each support pillar 111. The clamping portion 220 clamps 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 110 without using multiple second fasteners 131.

[0052] In the first to third embodiments, the number of supports 110 may be one or three or more.

[0053] Furthermore, in the first to third embodiments, as long as the counterweight 10 can be stably supported on the support device main body 100, the counterweight 10 may not be fixed to each support 110 but may simply be placed on each support 110.

[0054] Furthermore, in the first to third embodiments, each first through hole 115 may be an elongated hole, which can facilitate alignment with the corresponding first screw hole 123. Similarly, each second through hole 116 may be an elongated hole, which can facilitate alignment with the corresponding second screw hole 133.

[0055] Furthermore, 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, a worker first attaches a stud bolt to the second screw hole 133. Then, the worker 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 a stud bolt, the second screw hole 133 can be aligned with the second through hole 116 based on the axis of the stud bolt, making alignment easier.

[0056] Similarly, the first fastener 121 may also be a combination of a stud bolt and a nut.

[0057] The above describes in detail preferred embodiments, but the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims.

[0058] The aspects of each embodiment may be combined with each other.

[0059] Various aspects of the present disclosure will be summarized below as appendices. (Appendix 1) a base fixed to the bottom of the hoistway; a support that stands on the base and supports the counterweight from below; and a first fastener for securing the support to the base; Equipped with The support is The pillars and a first connecting portion provided at the lower end of the support; It has The base is provided with a first screw hole, An elevator counterweight support device, wherein the first fastener is screwed into the first screw hole through the first connecting portion. (Appendix 2) 2. The elevator counterweight support device according to claim 1, wherein the base is a buffer base on which a counterweight buffer is installed. (Appendix 3) The elevator counterweight support device according to claim 1 or 2, wherein the base has a recess formed therein into which the first connecting portion is fitted. (Appendix 4) a second fastener securing the support to the counterweight; Furthermore, The support body further includes a second connecting portion provided at an upper end of the support column, The counterweight has a second screw hole, The elevator counterweight support device according to any one of appendices 1 to 3, wherein the second fastener is threaded into the second screw hole through the second connection portion. (Appendix 5) The support is A clamping portion is provided at the upper end of the support pillar and clamps the counterweight from both sides in the thickness direction of the counterweight. 4. The elevator counterweight support device according to any one of claims 1 to 3, further comprising: [Explanation of symbols]

[0060] 1 elevator shaft, 2 bottom, 10 counterweight, 22 counterweight buffer, 100 support device body, 110 support body, 111 support column, 112 first connecting portion, 113 second connecting portion, 120 buffer base (base), 121 first fastener, 123 first screw hole, 131 second fastener, 133 second screw hole, 210 recess, 220 clamping portion.

Claims

1. a base fixed to the bottom of the hoistway; a support that stands on the base and supports the counterweight from below; and a first fastener for securing the support to the base; Equipped with The support is The pillars and a first connecting portion provided at a lower end of the support; It has The base is provided with a first screw hole, the first fastener is threaded into the first screw hole through the first connecting portion; The base has a recess formed therein into which the first connecting portion is fitted.

2. a base fixed to the bottom of the hoistway; a support that stands on the base and supports the counterweight from below; and a first fastener for securing the support to the base; Equipped with The support is The pillars and a first connecting portion provided at a lower end of the support; It has The base is provided with a first screw hole, the first fastener is threaded into the first screw hole through the first connecting portion; The support is A clamping portion is provided at the upper end of the support pillar and clamps the counterweight from both sides in the thickness direction of the counterweight. The elevator counterweight support device further comprises:

3. 3. The elevator counterweight support device according to claim 1, wherein the base is a buffer base on which a counterweight buffer is installed.

4. a second fastener securing the support to the counterweight; Furthermore, The support body further includes a second connecting portion provided at an upper end of the support column, The counterweight has a second screw hole, The elevator counterweight support device according to claim 1 or 2, wherein the second fastener is threaded into the second screw hole through the second connecting portion.

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