Counterweight pushing jig and counterweight pushing method for elevator

Abstract

To provide a balance weight pushing jig for an elevator capable of facilitating alignment work of a weight body and improving safety.SOLUTION: A counterweight pushing jig according to an embodiment includes a support tool detachably attached to a guide rail, and a pushing tool supported by the support tool and configured to come into contact with a weight body on a front surface of a counterweight to push the weight body. The pushing tool is attached to the support tool so as to be movable in a direction perpendicular to the front surface of the counterweight with respect to the support tool.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The embodiments relate to an elevator counterweight pushing jig and a counterweight pushing method. [Background technology]

[0002] An elevator system is known in which a car and a counterweight are connected via a main rope, and the car is raised and lowered by winding up the main rope. The counterweight is configured by mounting multiple weights on a counterweight body frame. The weights are manually loaded onto the counterweight body frame one by one, which can cause the loaded weights to become misaligned. In this case, a step between the weights is formed in front of the counterweight. To eliminate this step, it is conceivable to remove the weights from the counterweight body frame and reload them one by one. This allows the multiple weights to be aligned. However, in this case, the alignment of the weights takes a lot of time. Furthermore, the task of reloading the weights raises safety concerns for the workers. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-241549 Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments aim to provide an elevator counterweight pushing jig and a counterweight pushing method that can facilitate the alignment of weights and improve safety. [Means for solving the problem]

[0005] This embodiment is a jig for pushing and aligning the weights that make up a counterweight that moves up and down along an elevator guide rail. The counterweight pushing jig includes a support removably attached to the guide rail, and a pushing tool supported by the support that abuts against the weights on the front side of the counterweight to push them in. The pushing tool is attached to the support so as to be movable in a direction perpendicular to the front side of the counterweight relative to the support.

[0006] The present embodiment is a method for aligning a counterweight that moves up and down along an elevator guide rail by using a counterweight pushing jig including a support and a pushing tool. The counterweight pushing method includes a jig mounting step of attaching the support to the guide rail and supporting the pushing tool on the support, a pushing step of abutting the pushing tool against the counterweight in front of the counterweight to push the counterweight, a pushing tool separating step of separating the pushing tool from the counterweight, and a jig removing step of removing the pushing tool from the support and from the guide rail. The pushing tool is attached to the support so as to be movable in a direction perpendicular to the front of the counterweight relative to the support. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic cross-sectional view showing an elevator apparatus according to the present embodiment. [Figure 2] FIG. 2 is a perspective view showing the elevator counterweight pushing jig according to this embodiment. [Figure 3] FIG. 3 is a perspective view showing the support structure shown in FIG. 2 from the back side. [Figure 4] 4(a) is a side view showing the attached state of the support structure shown in FIG. 3, and FIG. 4(b) is a side view showing the retracted state of the second support plate of the support structure shown in FIG. [Figure 5] 5 is a cross-sectional view showing a weight contact portion of the pusher shown in FIG. [Figure 6] 6 is a top view showing the counterweight pushing jig of the elevator shown in FIG. 2. FIG. [Figure 7]7 is a top view showing a state in which the stopper is separated from the weight main body frame in the elevator counterweight pushing jig shown in FIG. 6. FIG. [Figure 8] 8 is a cross-sectional view showing a state in which a pushing tool of the counterweight pushing jig for the elevator shown in FIG. 2 is brought into contact with a weight. [Figure 9] 9 is a cross-sectional view showing a state in which the pushing tool of the counterweight pushing jig for the elevator shown in FIG. 2 has been retracted from the weight. [Figure 10] FIG. 10 is a flowchart showing the elevator counterweight pushing method according to this embodiment. [Figure 11] FIG. 11 is a flowchart showing a specific example of the jig attaching step shown in FIG. [Figure 12] FIG. 12 is a flowchart showing a specific example of the jig detaching step shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an elevator counterweight pushing jig and a counterweight pushing method according to the present embodiment will be described with reference to the drawings. First, an elevator apparatus according to the present embodiment will be described.

[0009] As shown in FIG. 1, elevator apparatus 1 includes a car 3 and a counterweight 4 disposed in a hoistway 2. The car 3 and counterweight 4 are connected via a main rope 5. The main rope 5 is wound around a traction sheave 6a and a camber sheave 7 provided on a hoisting machine 6. The hoisting machine 6 winds up the main rope 5, causing the car 3 and counterweight 4 to rise and fall. The car 3 rises and falls while being guided by a car guide rail 8 extending vertically. The counterweight 4 rises and falls while being guided by a counterweight guide rail 9 extending vertically. The hoisting machine 6 is installed in a machine room 10 provided above the hoistway 2. A control panel 11 is installed in the machine room 10. The control panel 11 is a device that controls the entire elevator apparatus 1, including the hoisting machine 6. For example, the control panel 11 controls the operation of the hoisting machine 6 in response to hall calls and car calls, and lands the car 3 at the hall 12 of the floor for which the call is registered.

[0010] The elevator apparatus 1 is not limited to the configuration shown in FIG. 1 . For example, it may be a so-called machine room-less elevator apparatus. That is, the machine room 10 may not be provided, and the hoisting machine 6 and the control panel 11 may be provided above the hoistway 2, etc. Also, the counterweight 4 may not be connected to the main ropes 5, and the hoisting machine 6 may wind up or pay out the main ropes 5 connected to the car 3. Even in this case, the hoisting machine 6 can raise and lower the car 3 via the main ropes 5. That is, the elevator apparatus 1 may be an elevator apparatus that does not have a counterweight 4.

[0011] As shown in Fig. 2, the counterweight 4 includes a counterweight main body frame 13 and a plurality of counterweights 14. The counterweight main body frame 13 includes a lower beam 15, a pair of vertical beams 16 extending upward from the lower beam 15, and an upper beam 17 connecting the upper ends of the pair of vertical beams 16. The counterweights 14 are mounted on the lower beam 15. The vertical beams 16 are configured to support corresponding ends 14a of the counterweights 14 in the lateral direction, and the movement of the counterweights 14 is restricted by the vertical beams 16.

[0012] More specifically, both lateral end portions 14a of the weight 14 are inserted into the corresponding recesses 16a of the vertical beams 16. This restricts horizontal movement of the weight 14 and prevents the weight 14 from falling off. However, a gap is formed between the lateral end portions 14a of the weight 14 and the wall surfaces of the recesses 16a of the vertical beams 16 to ensure ease of loading the weight 14. This may cause the weights 14 loaded on the weight body frame 13 to shift, resulting in a step of the weight 14 at the front of the counterweight 4. The elevator counterweight pushing jig and elevator counterweight pushing method according to this embodiment are a jig and method for reducing such a step and aligning the weights 14. The front of the counterweight 4 refers to the surface that is located in front when the pair of vertical beams 16 are lined up, facing the inside of the hoistway 2. The front of the counterweight 4 may also be the surface facing the car 3.

[0013] Next, we will explain the elevator counterweight pushing jig according to this embodiment (hereinafter simply referred to as counterweight pushing jig 20). Counterweight pushing jig 20 is a jig for pushing and aligning weights 14 that constitute counterweight 4 that rises and falls along weight guide rails 9 of the elevator.

[0014] As shown in FIG. 2, the counterweight pushing jig 20 includes a support tool 30, a pushing tool 50, and a stopper 60.

[0015] First, the support 30 will be described.

[0016] 2, the support 30 is removably attached to the weight guide rail 9. The support 30 is configured to support the pushing tool 50 on the weight guide rail 9. The support 30 may include a pair of side beams 31, a first front beam 32, a second front beam 33, and a support structure 34.

[0017] The side beams 31 are removably attached to the corresponding weight guide rails 9. More specifically, when viewed from the front, the left-side side beam 31 is attached to the left-side weight guide rail 9, and the right-side side beam 31 is attached to the right-side weight guide rail 9. The side beams 31 may extend perpendicular to the weight guide rails 9 and the longitudinal beam 16. The side beams 31 may also extend horizontally. The side beams 31 are attached to the weight guide rails 9 using rail clips 18 (see FIG. 6) and bolts.

[0018] The first front beam 32 is attached to each side beam 31. The first front beam 32 faces the front of the counterweight 4. The first front beam 32 may extend perpendicular to the counterweight guide rail 9 and the longitudinal beam 16. The first front beam 32 may also extend horizontally. The first front beam 32 is attached to the side beams 31 using bolts 35.

[0019] The second front beam 33 is attached to each side beam 31. The second front beam 33 faces the front of the counterweight 4. The second front beam 33 is located above the first front beam 32. The second front beam 33 may extend perpendicular to the counterweight guide rail 9 and the longitudinal beam 16. The second front beam 33 may also extend horizontally. The second front beam 33 is attached to the side beams 31 using bolts 36 (see FIG. 6).

[0020] The support structure 34 is configured to support the pusher 50. A lower portion of the support structure 34 is attached to the first front beam 32, and an upper portion of the support structure 34 is attached to the second front beam 33. The support structure 34 may include a first support plate 37, second support plates 38A and 38B (see FIG. 3), mounting bolts 39, and support bolts 40 (see FIG. 3).

[0021] As shown in FIGS. 2 to 4, the first support plate 37 is attached to the first front beam 32 and the second front beam 33 of the support 30 on the side opposite the weight 14. The first support plate 37 abuts against the front surfaces of the first front beam 32 and the second front beam 33. The front surface of the first front beam 32 is the surface opposite the weight 14, and the front surface of the second front beam 33 is the surface opposite the weight 14. The first support plate 37 extends downward from the first front beam 32 and upward from the second front beam 33. As shown in FIG. 3, a overlapping plate 41 is overlapped at the center of the first support plate 37. The overlapping plate 41 may be located on the weight 14 side of the first support plate 37 and joined to the first support plate 37. The overlapping plate 41 is located between the two second support plates 38A and 38B in the vertical direction. A push-in bolt 51 of a push-in tool 50 (described later) passes through the first support plate 37 and the overlapping plate 41 and is screwed into a nut N1 joined to the overlapping plate 41.

[0022] The second support plates 38A and 38B are located on the weight 14 side of the first support plate 37. As shown in FIG. 4 , the second support plates 38A and 38B sandwich the first support plate 37 and the first front beam 32 or the second front beam 33 of the support 30. In this embodiment, the support structure 34 includes two second support plates 38A and 38B. One second support plate 38A is located below and faces the first front beam 32. The lower second support plate 38A sandwiches the first support plate 37 and the first front beam 32. The other second support plate 38B is located above and faces the second front beam 33. The upper second support plate 38B sandwiches the first support plate 37 and the second front beam 33.

[0023] As shown in FIGS. 3 and 4(a), the mounting bolts 39 are bolts for attaching the first support plate 37 and the second support plates 38A and 38B to the first front beam 32 or the second front beam 33 of the support 30. More specifically, the first support plate 37, the second support plate 38A, and the first front beam 32 are fixed together using two mounting bolts 39. As shown in FIG. 4, these mounting bolts 39 are inserted into bolt holes 37a formed in the first support plate 37, mounting bolt insertion holes 38Aa formed in the second support plate 38A, and the first mounting hole 32a formed in the first front beam 32, and are fastened with nuts N2. The other two mounting bolts 39 are used to fix the first support plate 37, the second support plate 38B, and the second front beam 33. These mounting bolts 39 are inserted into bolt holes 37a formed in the first support plate 37, mounting bolt insertion holes 38Ba formed in the second support plate 38B, and second mounting holes 33a formed in the second front beam 33, and are fastened with nuts N2.

[0024] As shown in FIGS. 3 and 4(a), the support bolts 40 are bolts for supporting the second support plates 38A and 38B to the first support plate 37. The support bolts 40 do not attach the second support plates 38A and 38B to the first front beam 32 and second front beam 33 of the support 30. More specifically, the first support plate 37 and the second support plate 38A are attached to each other using two support bolts 40. The second support plate 38A is not attached to the first front beam 32. These support bolts 40 are inserted into bolt holes 37b formed in the first support plate 37, support bolt insertion holes 38Ab formed in the second support plate 38A, and adapter holes 42a formed in the adapter 42 located below, and fastened to each other. The adapter 42 located below is interposed between the first support plate 37 and the second support plate 38A. The first support plate 37 and the second support plate 38B are attached to each other using the other two support bolts 40. The second support plate 38B is not attached to the second front beam 33. These support bolts 40 are inserted into and fastened to bolt holes 37b formed in the first support plate 37, support bolt insertion holes 38Bb formed in the second support plate 38B, and adapter holes 42a formed in an adapter 42 positioned above. The adapter 42 positioned above is interposed between the first support plate 37 and the second support plate 38B.

[0025] As shown in Figures 3 and 4, the support bolt insertion holes 38Ab, 38Bb extend vertically in an elongated shape. Each of the support bolt insertion holes 38Ab, 38Bb is formed as an elongated hole. In the second support plate 38A, the mounting bolt insertion hole 38Aa is located in the upper part of the second support plate 38A, and the support bolt insertion hole 38Ab extends from the upper part to the lower part of the second support plate 38A. In the second support plate 38A, the mounting bolt insertion hole 38Aa is located in the lower part of the second support plate 38A, and the support bolt insertion hole 38Bb extends from the lower part to the upper part of the second support plate 38A.

[0026] 4(b), when the first support plate 37 and the second support plates 38A, 38B are not attached to the first front beam 32 or the second front beam 33 with the above-mentioned mounting bolts 39, the second support plates 38A, 38B can be moved upward and downward. Even in this case, the second support plates 38A, 38B can be supported on the first support plate 37 by the support bolts 40.

[0027] As shown in FIG. 2 , the support structure 34 can be attached to the first front beam 32 and the second front beam 33 at a plurality of different positions in the lateral direction. More specifically, the first front beam 32 includes the above-mentioned plurality of first mounting holes 32a formed at a plurality of different positions in the lateral direction. The first mounting holes 32a are formed at different positions in the lateral direction of the first front beam 32. The second front beam 33 includes a plurality of second mounting holes 33a formed at different positions in the lateral direction. The second mounting holes 33a are formed at different positions in the lateral direction. The first support plate 37 and the second support plates 38A, 38B of the support structure 34 can be attached to the first front beam 32 and the second front beam 33 by inserting mounting bolts 39 into any combination of the first mounting holes 32a and the second mounting holes 33a from among the plurality of first mounting holes 32a and the plurality of second mounting holes 33a.

[0028] Next, the pusher 50 will be described.

[0029] As shown in FIGS. 2 and 3 , the pushing tool 50 is supported by the support structure 34 of the support 30 described above. The pushing tool 50 is attached to a portion of the support structure 34 between the first front beam 32 and the second front beam 33. The pushing tool 50 is configured to abut against the front surface of the counterweight 4 and push in the weight 14 (see FIG. 7 ). The pushing tool 50 is attached to the support 30 so as to be movable in a direction perpendicular to the front surface of the counterweight 4 relative to the first front beam 32 and the second front beam 33 of the support 30. The front surface of the counterweight 4 corresponds to the side surface located on the front side of the weight 14 loaded on the counterweight body frame 13. The pushing tool 50 may include a pushing bolt 51, a weight abutment portion 52, and a collar 53.

[0030] The push bolt 51 is threadedly engaged with the support structure 34 of the support 30. More specifically, as shown in FIG. 3, the push bolt 51 is threadedly engaged with a nut N1 joined to the stacking plate 41 described above. The bolt head 51a (see FIG. 6) of the push bolt 51 is located on the opposite side of the weight 14 with respect to the first support plate 37 of the support structure 34. The bolt head 51a is spaced apart from the first support plate 37. The threaded portion 51b of the push bolt 51 may be formed with a right-handed thread. By gripping the bolt head 51a with a tool (not shown) and rotating the push bolt 51 clockwise when viewed toward the weight 14, the push bolt 51 can be advanced relative to the weight 14 and the weight-contact portion 52 can be brought into contact with the weight 14 (see FIG. 8). On the other hand, by rotating the push bolt 51 counterclockwise, the push bolt 51 can be retracted from the weight 14, and the weight abutment portion 52 can be separated from the weight 14 (see FIG. 9). The threaded portion 51b is not limited to being formed as a right-handed thread, and may be formed as a left-handed thread.

[0031] 3 and 5, weight contact portion 52 is attached to the tip of push bolt 51. Weight contact portion 52 is able to come into contact with weight body 14 on the front side of counterweight 4. Weight contact portion 52 is free to rotate relative to push bolt 51.

[0032] More specifically, the weight abutment portion 52 includes a cylindrical body 54 and a flange 55 connected to one end of the body 54. The body 54 includes an abutment surface 54a that can abut against the weight 14. The diameter of the body 54 may be larger than the thickness of the weight 14. In this case, the body 54 can abut against a plurality of weights 14. In the example shown in FIG. 7 , which will be described later, the body 54 can abut against four weights 14.

[0033] The threaded portion 51b of the push bolt 51, the nut N3, and the washer 56 are inserted into the inside of the cylindrical body 54. The flange 55 includes a flange hole 55a into which a collar 53 (described later) is inserted. A gap may be formed between the flange hole 55a and the collar 53. The thickness of the collar 53 may be greater than the thickness of the flange 55. In this way, the weight abutting portion 52 is free to rotate with respect to the push bolt 51.

[0034] The collar 53 includes a collar insertion hole 53a into which the threaded portion 51b of the push bolt 51 is inserted. The threaded portion 51b is inserted into the collar insertion hole 53a. The collar insertion hole 53a does not necessarily have to have a threaded portion formed therein.

[0035] Nuts N3 and N4 are threaded onto the threaded portion 51b of the push bolt 51 on both sides of the collar 53. Washers 56, into which the threaded portion 51b of the push bolt 51 is inserted, are interposed between the nuts N3 and N4 and the collar 53. The two nuts N3 and N4 are fastened together and abut against the end face of the collar 53 via the corresponding washers 56. The washers 56 have a planar shape that is larger than the collar 53 when viewed in a direction along the central axis of the push bolt 51. The washers 56 are able to abut against the flange 55 of the weight abutting portion 52. This allows the flange 55 of the weight abutting portion 52 to be held in the region between the two washers 56. In the region between the two washers 56, the weight abutting portion 52 is able to move in a direction along the central axis of the push bolt 51 and is also able to rotate freely relative to the push bolt 51.

[0036] The pushing tool 50 configured in this manner can be attached to the support 30 at different positions in the lateral direction, as shown in FIG. 2 . As described above, the pushing tool 50 is supported by the support structure 34. The support structure 34 can be attached to the first front beam 32 and the second front beam 33 at a plurality of different positions in the lateral direction. The support structure 34 can be attached to the first front beam 32 and the second front beam 33 by inserting mounting bolts 39 into any combination of the first mounting holes 32a and the second mounting holes 33a formed in the first front beam 32 and the second front beam 33. Therefore, the pushing tool 50 can also be attached to the first front beam 32 and the second front beam 33 by inserting mounting bolts 39 into any combination of the first mounting holes 32a and the second mounting holes 33a formed in the first front beam 32 and the second front beam 33.

[0037] Next, the stopper 60 will be described.

[0038] As shown in FIG. 6, the stopper 60 is configured to abut against the back surface of the vertical beam 16 of the weight main body frame 13. The stopper 60 abuts against each vertical beam 16. The stopper 60 is supported by the corresponding side beam 31 of the support 30. The stopper 60 is attached to the side beam 31 using two stopper bolts 61. As shown in FIG. 7, when one of the stopper bolts 61 is removed, the stopper 60 can be separated from the back surface of the vertical beam 16. In this case, the stopper 60 can be separated from the back surface of the vertical beam 16 by rotating the attached bolt as a fulcrum.

[0039] Next, a counterweight pressing method using the counterweight pressing jig 20 according to this embodiment configured as described above will be described with reference to Figures 10 to 12. The counterweight pressing method is a method in which the counterweight pressing jig 20 including the support tool 30 and the pressing tool 50 is used to press and align the weights 14.

[0040] First, as shown in FIG. 10, in step S1, the support tool 30 is attached to the weight guide rail 9, and the pushing tool 50 is supported by the support tool 30 (jig attachment step).

[0041] In the jig attachment process, as shown in FIG. 11, first, stoppers 60 are attached to each side beam 31 (step S11). Next, side beams 31 are attached to each weight guide rail 9 (step S12). Next, first front beams 32 and second front beams 33 are attached to each side beam 31 (step S13). Next, support structures 34 are attached to the first front beams 32 and second front beams 33 (step S14). Next, pushing tool 50 is attached to support structure 34 (step S15). In step S15, weight abutment portion 52 of pushing tool 50 is retracted from weight body 14 so as not to abut against weight body 14 (see FIG. 9).

[0042] Step S14 will be described in more detail. First, the second support plate 38A and the second support plate 38B are attached to the first support plate 37 of the support structure 34 using support bolts 40. Next, as shown in FIG. 4(b), the first support plate 37 is brought into contact with the first front beam 32 and the second front beam 33. At this time, the second support plate 38A is moved downward, and the second support plate 38B is moved upward.

[0043] More specifically, because the support bolt insertion holes 38Ab of the second support plate 38A are formed as elongated holes extending in the vertical direction, the second support plate 38A is moved downward so that the second support plate 38A is positioned above the support bolt insertion holes 38Ab. This prevents the second support plate 38A from interfering with the first front beam 32. Similarly, because the support bolt insertion holes 38Bb of the second support plate 38B are formed as elongated holes extending in the vertical direction, the second support plate 38B is moved upward so that the second support plate 38B is positioned below the support bolt insertion holes 38Bb. This prevents the second support plate 38B from interfering with the second front beam 33. Furthermore, when the first support plate 37 abuts against the first front beam 32 and the second front beam 33, the second support plates 38A and 38B can be prevented from falling off the first support plate 37.

[0044] 4(a), the second support plate 38A is then moved upward, and the first support plate 37 and the second support plate 38A are attached to the first front beam 32 with the attachment bolts 39. Similarly, the second support plate 38B is moved downward, and the first support plate 37 and the second support plate 38B are attached to the second front beam 33 with the attachment bolts 39. In this way, the support structure 34 can be attached to the first front beam 32 and the second front beam 33.

[0045] In step S2 following step S1, as shown in Fig. 10, the counterweight 4 is raised and lowered so that the pushing tool 50 faces the weight body 14 to be pushed (raising and lowering step). More specifically, the height of the counterweight 4 is adjusted so that the weight body 14 to be pushed faces the weight abutment portion 52. In this case, the above-mentioned hoisting machine 6 is driven to raise and lower the counterweight 4.

[0046] In step S3 following step S2, the stopper 60 attached to the side beam 31 is brought into contact with the rear surface of the vertical beam 16 of the weight main body frame 13 (stopper abutment step). In this case, one of the two stopper bolts 61 is removed (see FIG. 7). This allows the stopper 60 to rotate and come into contact with the rear surface of the vertical beam 16. Thereafter, the stopper 60 is fixed with the two stopper bolts 61 (see FIG. 6).

[0047] In step S4 following step S3, the pusher 50 is brought into contact with the weights 14 of the counterweight 4 in front of the counterweight 4, and the weights 14 are pushed in (pushing-in process). In this case, the bolt head 51a of the push bolt 51 is grasped with a tool (not shown), and the push bolt 51 is rotated. This causes the push bolt 51 and the weight abutment portion 52 attached to the tip of the push bolt 51 to advance toward the weights 14 (see FIG. 8). Eventually, the weight abutment portion 52 abuts against the multiple weights 14, and as the push bolt 51 continues to rotate, the weight abutment portion 52 can push in the multiple weights 14. Each weight 14 moves toward the back side of the counterweight 4 and abuts against the wall surface of the recess 16a of the vertical beam 16. At this point, each weight 14 no longer moves, and the pushing-in process ends. In this way, a plurality of weights 14 can be pushed into the back side of the counterweight 4 by a single push using the pusher 50.

[0048] In step S5 following step S5, the pusher 50 is separated from the weight 14 (pushing tool separating step). In this case, the pushing bolt 51 is rotated in the opposite direction to the pushing step. As a result, the weight abutting portion 52 is separated from the weight 14 and retracts (see FIG. 9).

[0049] In step S6 following step S5, it is checked whether there are other weights 14 to be pressed.

[0050] If there are no other weights 14 to be pressed, in step S7, the pressing tool 50 is removed from the support 30, and the support 30 is also removed from the weight guide rail 9 (support removal step). The pressing tool 50 and the support 30 can be removed by reversing the procedure of the jig attachment step in step S1 described above.

[0051] More specifically, in the jig removal step, as shown in Fig. 12, the pushing tool 50 is removed from the support structure 34 (step S21). Next, the support structure 34 is removed from the first front beam 32 and the second front beam 33 (step S22). Next, the first front beam 32 and the second front beam 33 are removed from each side beam 31 (step S23). Next, the side beams 31 are removed from each weight guide rail 9 (step S24). Next, the stoppers 60 are removed from each side beam 31 (step S25).

[0052] If there is another weight 14 to be pressed in, as shown in Fig. 10, in step S8, the stopper 60 is separated from the rear surface of the vertical beam 16 (stopper separating step). In this case, one of the two stopper bolts 61 is removed (see Fig. 7). This allows the stopper 60 to rotate and be separated from the rear surface of the vertical beam 16.

[0053] After step S8, the process returns to step S2 described above, and the counterweight 4 is raised and lowered so that the pushing tool 50 faces the other weight 14 to be pushed (raising and lowering step). More specifically, the height of the counterweight 4 is adjusted so that the other weight 14 to be pushed faces the weight abutment portion 52.

[0054] Thereafter, the stopper abutment step in step S3 and the pushing step in step S4 are performed, and the weight 14 to be pushed is pushed in. As a result, the weight 14 pushed in this step S4 and the weight 14 pushed in the previous step S4 are aligned in front of the counterweight 4, and the step is reduced.

[0055] Thereafter, if there are no other weights 14 to be pressed, the process proceeds to step S6. If there are other weights 14 to be pressed, the process proceeds to step S8, and the step of pressing the weights 14 is repeated until there are other weights 14 to be pressed.

[0056] In this way, the multiple weights 14 are aligned in front of the counterweight 4. By aligning the weights 14, it is possible to eliminate any steps between the weights 14. In observation elevators, this is an effective aesthetic measure. Of the multiple weights 14, the weight 14 located at the top may be pushed in manually without using the counterweight pushing jig 20.

[0057] As described above, according to this embodiment, the pushing tool 50 is supported by the support 30 attached to the weight guide rail 9, and the pushing tool 50 is attached to the support 30 so as to be movable relative to the support 30 in a direction perpendicular to the front surface of the counterweight 4. This allows the pushing tool 50 to come into contact with the weights 14 in front of the counterweight 4 and push them in, thereby aligning the weights 14 in front of the counterweight 4. This makes it possible to facilitate the alignment of the weights 14 and improve the safety of the alignment of the weights 14. It also reduces the time required for the alignment.

[0058] Furthermore, according to this embodiment, the pushing tool 50 includes a pushing bolt 51 that is threaded into the support tool 30, and a weight abutment portion 52 that is attached to the tip of the pushing bolt 51. The weight abutment portion 52 is capable of abutting against the weight body 14 on the front side of the counterweight 4. This allows the weight abutment portion 52 to move relative to the support tool 30 in a direction perpendicular to the front side of the counterweight 4.

[0059] Furthermore, according to this embodiment, weight abutment portion 52 is free to rotate relative to push bolt 51. As a result, even if push bolt 51 is rotated while weight abutment portion 52 abuts weight body 14, the rotational force of push bolt 51 is prevented from being transmitted to weight abutment portion 52. This prevents the rotational force of push bolt 51 from being applied to weight abutment portion 52. Furthermore, an increase in the force required to rotate push bolt 51 due to friction between weight abutment portion 52 and weight body 14 can be avoided, and the operating force for push bolt 51 can be reduced.

[0060] Furthermore, according to this embodiment, the second support plates 38A, 38B of the support structure 34 include support bolt insertion holes 38Ab, 38Bb into which support bolts 40 are inserted to support the second support plates 38A, 38B on the first support plate 37. The support bolt insertion holes 38Ab, 38Bb extend vertically in an elongated shape. This allows the second support plates 38A, 38B to be moved vertically relative to the first support plate 37 while being supported by the first support plate 37. This prevents the second support plates 38A, 38B from interfering with the first front beam 32 and the second front beam 33 when the first support plate 37 is brought into contact with the first front beam 32 and the second front beam 33. This also prevents the second support plates 38A, 38B from falling off the first support plate 37. As a result, the installation of the support structure 34 can be facilitated, improving workability.

[0061] Furthermore, according to this embodiment, the lower part of the support structure 34 is attached to the first front beam 32, and the upper part of the support structure 34 is attached to the second front beam 33. The pushing tool 50 is attached to a portion of the support structure 34 between the first front beam 32 and the second front beam 33. This makes it possible to prevent the support structure 34 from twisting when the weight 14 is pushed in by the pushing tool 50. This improves the workability of pushing in the weight 14.

[0062] Furthermore, according to this embodiment, the pusher 50 can be attached to the support 30 at a plurality of different positions in the lateral direction. As a result, when the weight 14 is inclined with respect to the front face of the counterweight 4, the attachment position of the pusher 50 can be changed according to the protruding position of the weight 14. As a result, the weight 14 can be pushed in entirely, making it easier to align the weights 14.

[0063] Furthermore, according to this embodiment, the support 30 includes a plurality of first mounting holes 32a and a plurality of second mounting holes 33a formed at a plurality of different positions in the lateral direction. The pushing tool 50 can be attached to the support 30 by inserting a mounting bolt 39 into any one of the plurality of first mounting holes 32a and the plurality of second mounting holes 33a. This allows the pushing tool 50 to be attached to the support 30 at a plurality of different positions in the lateral direction.

[0064] Furthermore, according to this embodiment, the stopper 60 supported by the support 30 abuts against the rear surface of the vertical beam 16 that supports the lateral end of the weight 14. This prevents force from being applied to the guide member of the counterweight 4, which is composed of a guide shoe or guide rail (not shown), when the weight 14 is pushed in by the pushing tool 50. Furthermore, when the weight 14 is pushed in by the pushing tool 50, the counterweight pushing jig 20 can hold the counterweight 4. This allows the pushing tool 50 to push in the weight 14 effectively.

[0065] Furthermore, according to this embodiment, the stopper 60 is attached to the support 30 using two stopper bolts 61 extending in the vertical direction. When one of the stopper bolts 61 is removed, the stopper 60 can be moved away from the rear surface of the vertical beam 16. This allows the stopper 60 to be moved away from the rear surface of the vertical beam 16, thereby allowing the counterweight 4 to be raised and lowered with the support 30 attached to the weight guide rail 9. Therefore, the pushing tool 50 can be easily placed opposite the weight 14 to be pushed in, improving the workability of aligning the weight 14.

[0066] Furthermore, according to this embodiment, after the pushing tool separating step, a lifting step is performed in which the counterweight 4 is raised and lowered to bring the pushing tool 50 into opposition to the weight body 14 to be pushed. After the lifting step, a pushing step is performed on the weight body 14 to be pushed into. This makes it easy to bring the pushing tool 50 into opposition to the weight body 14 to be pushed into. This improves the workability of aligning the weights 14.

[0067] Furthermore, according to this embodiment, before the pushing step, a stopper abutting step is performed in which the stopper 60 attached to the support 30 is brought into abutment with the back surface of the vertical beam 16 that supports the lateral end 14a of the weight 14. After the pushing-tool separating step and before the lifting / lowering step, a stopper separating step is performed in which the stopper 60 is separated from the back surface of the vertical beam 16. This allows the counterweight 4 to be lifted and lowered with the support 30 attached to the weight guide rail 9. Therefore, the pushing tool 50 can be easily placed opposite the weight 14 to be pushed, improving the workability of aligning the weights 14.

[0068] According to the embodiment described above, the alignment work of the weights 14 can be facilitated and safety can be improved.

[0069] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0070] 1: elevator device, 4: counterweight, 9: counterweight guide rail, 14: counterweight body, 14a: end, 16: vertical beam, 20: counterweight pushing jig, 30: support, 31: side beam, 32: first front beam, 32a: first mounting hole, 33: second front beam, 33a: second mounting hole, 34: support structure, 37: first support plate, 38A: second support plate, 38Ab: support bolt insertion hole, 38B: second support plate, 38Bb: support bolt insertion hole, 39: mounting bolt, 40: support bolt, 50: pushing tool, 51: pushing bolt, 52: counterweight abutment portion, 60: stopper, 61: stopper bolt

Claims

1. A counterweight pushing jig that pushes in and aligns weights that constitute a counterweight that moves up and down along an elevator guide rail, a support removably attached to the guide rail; a pushing tool supported by the support, the pushing tool contacting the weight body at a front surface of the counterweight to push the weight body in, The pushing tool is attached to the support so as to be movable relative to the support in a direction perpendicular to a front surface of the counterweight. Elevator counterweight pushing jig.

2. The pushing tool includes a pushing bolt that is threadedly engaged with the support tool, and a weight abutment portion that is attached to a tip end of the pushing bolt and can abut against the weight body on a front side of the counterweight. The elevator counterweight pushing jig according to claim 1.

3. The weight abutment portion is rotatable relative to the push bolt. The elevator counterweight pushing jig according to claim 2.

4. the support includes a pair of side beams attached to the guide rail, a front beam attached to each of the side beams and facing a front surface of the counterweight, and a support structure that supports the pusher, The support structure includes a first support plate attached to the front beam on the side opposite to the weight body, a second support plate positioned on the weight body side of the first support plate and sandwiching the first support plate and the front beam, mounting bolts that mount the first support plate and the second support plate to the front beam, and support bolts that support the second support plate to the first support plate but do not mount the second support plate to the front beam, the second support plate includes a support bolt insertion hole into which the support bolt is inserted, The support bolt insertion hole extends vertically in an elongated shape.

3. The elevator counterweight pushing jig according to claim 1 or 2.

5. the support includes a pair of side beams attached to the guide rail, a first front beam attached to each of the side beams and facing a front surface of the counterweight, a second front beam attached to each of the side beams and facing a front surface of the counterweight, the second front beam being located above the first front beam, and a support structure that supports the pusher, a lower portion of the support structure attached to the first front beam and an upper portion of the support structure attached to the second front beam; The pushing tool is attached to a portion of the support structure between the first front beam and the second front beam.

3. The elevator counterweight pushing jig according to claim 1 or 2.

6. The pusher can be attached to the support at a plurality of different positions in the lateral direction.

3. The elevator counterweight pushing jig according to claim 1 or 2.

7. the support includes a plurality of mounting holes formed at different positions in the lateral direction; The pushing tool can be attached to the support by inserting a mounting bolt into any one of the plurality of mounting holes. The elevator counterweight pushing jig according to claim 6.

8. The support further includes a stopper that abuts against a rear surface of a vertical beam that supports a lateral end of the weight and is supported by the support.

3. The elevator counterweight pushing jig according to claim 1 or 2.

9. the stopper is attached to the support by two stopper bolts extending in a vertical direction, When one of the stopper bolts is removed, the stopper can be separated from the back surface of the vertical beam. The elevator counterweight pushing jig according to claim 8.

10. A counterweight pushing method for pushing and aligning weights constituting a counterweight that moves up and down along an elevator guide rail by using a counterweight pushing jig including a support tool and a pushing tool, comprising: a jig mounting step of mounting the support tool on the guide rail and supporting the pushing tool on the support tool; a pushing step of pushing the weight by bringing the pushing tool into contact with the weight at the front of the counterweight; a pushing tool separating step of separating the pushing tool from the weight; a jig removal process of removing the pushing tool from the support tool and removing the support tool from the guide rail; Equipped with The pushing tool is attached to the support so as to be movable relative to the support in a direction perpendicular to the front surface of the counterweight. Elevator counterweight pushing method.

11. a lifting / lowering step of lifting / lowering the counterweight after the pushing tool separating step to make the pushing tool face the other weight body to be pushed, After the lifting and lowering step, the pushing step is performed on the weight body to be pushed. The method for pushing in an elevator counterweight according to claim 10.

12. a stopper abutting step of abutting a stopper attached to the support tool against a rear surface of a vertical beam supporting an end portion of the weight in a lateral direction before the pushing step; The method further includes a stopper separating step of separating the stopper from the back surface of the vertical beam after the pushing tool separating step and before the lifting step. The method for pushing in an elevator counterweight according to claim 11.

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