Guide rail centering device for elevator and guide rail centering method for elevator

Abstract

To provide a guide rail centering device for an elevator, which can surely center a plurality of guide rails.SOLUTION: In a guide rail centering device 3 for an elevator, a first gauge 4 is fitted to first and second guide rails 11 and 12, and arranged at positions with a pair of centering lines 2 as references. A second gauge 5 is fitted to a third guide rail 13, and fitted to the second guide rail 12 independently of the first gauge 4. A third gauge 6 is fitted to a fourth guide rail 14 and to the second gauge 5.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to an elevator guide rail centering device and an elevator guide rail centering method.

Background Art

[0002] When installing car guide rails and counterweight guide rails in an elevator hoistway, it is necessary to perform an operation of arranging these guide rails vertically along a predetermined position, that is, a centering operation. When centering the car guide rails and the counterweight guide rails, an elevator guide rail centering device is used.

[0003] Patent Document 1 discloses an elevator guide rail centering device that centers each guide rail by engaging a first gauge with a pair of car guide rails and engaging a second gauge with a pair of counterweight guide rails. The second gauge is connected to the first gauge via a plurality of sub gauges. Thereby, the position of the second gauge with respect to the first gauge is fixed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the conventional elevator guide rail centering device disclosed in Patent Document 1, the second gauge is connected to the first gauge via a plurality of sub - gauges. For this reason, depending on the layout of each guide rail, when the first gauge is engaged with the car guide rail, rails brackets or the like that support each guide rail may become an obstacle, and there is a possibility that the sub - gauge cannot be arranged between the first gauge and the second gauge. As a result, depending on the layout of each guide rail, there is a possibility that centering cannot be performed using the conventional elevator guide rail centering device.

[0006] The present disclosure solves the above - described problems, and an object thereof is to provide an elevator guide rail centering device that can more reliably center a plurality of guide rails.

Means for Solving the Problems

[0007] The elevator guide rail centering device according to the present disclosure is attached to the first guide rail and the second guide rail arranged to face each other, and is arranged at a position based on a pair of centering lines arranged along the vertical direction, thereby centering the first guide rail and the second guide rail respectively. A first gauge for centering, among the third guide rail and the fourth guide rail arranged to face each other, attached to the third guide rail and attached to the second guide rail independently of the first gauge, thereby positioning the third guide rail with respect to the second guide rail. A second gauge, and a third gauge attached to the fourth guide rail and attached to the second gauge for positioning the fourth guide rail with respect to the third guide rail. In addition, the method for aligning the guide rails of an elevator according to the present disclosure includes a first gauge attachment step of attaching a first gauge to a first guide rail and a second guide rail that are arranged to face each other, and after the first gauge attachment step, a first gauge is arranged at a position based on a pair of alignment lines arranged along the vertical direction, thereby performing alignment of each of the first guide rail and the second guide rail. This is a first gauge arrangement step. Among the third guide rail and the fourth guide rail that are arranged to face each other, a second gauge is attached to the third guide rail, and the second gauge is attached to the second guide rail independently of the first gauge, thereby performing positioning of the third guide rail with respect to the second guide rail. This is a second gauge attachment step. After the first gauge arrangement step and the second gauge attachment step, a third gauge is attached to the fourth guide rail, and the third gauge is attached to the second gauge, thereby performing positioning of the fourth guide rail with respect to the third guide rail. This is a third gauge attachment step.

Advantages of the Invention

[0008] According to the elevator guide rail alignment device and the elevator guide rail alignment method according to the present disclosure, the alignment of a plurality of guide rails can be performed more reliably.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0010] A mode for implementing the subject matter of the present disclosure will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and duplicate explanations will be appropriately simplified or omitted. Note that the subject matter of the present disclosure is not limited to the following embodiments, and within the scope not departing from the spirit of the present disclosure, deformation of any component of the embodiment or omission of any component of the embodiment is possible.

[0011] Embodiment 1. FIG. 1 is a perspective view showing a guide rail centering device for an elevator according to Embodiment 1. In the figure, in the hoistway 1, a plurality of guide rails 11 to 14, namely, a first guide rail 11, a second guide rail 12, a third guide rail 13, and a fourth guide rail 14, are arranged.

[0012] The first guide rail 11 and the second guide rail 12 are arranged opposite to each other in the width direction of the hoistway 1. The width direction of the hoistway 1 coincides with the left - right direction when the hoistway 1 is viewed from a landing (not shown) provided on each floor of the building. The first guide rail 11 and the second guide rail 12 are used as a pair of car guide rails for guiding the vertical movement of a car (not shown). The car is arranged between the first guide rail 11 and the second guide rail 12.

[0013] The third guide rail 13 and the fourth guide rail 14 are arranged opposite to each other in the depth direction of the hoistway 1. The depth direction of the hoistway 1 is a horizontal direction orthogonal to the width direction of the hoistway 1. The third guide rail 13 and the fourth guide rail 14 are used as a pair of counterweight guide rails for guiding the vertical movement of a counterweight (not shown). The counterweight is arranged between the third guide rail 13 and the fourth guide rail 14. In the present embodiment, when the hoistway 1 is viewed from above, the counterweight is arranged next to the car in the width direction of the hoistway 1.

[0014] The second guide rail 12 is disposed at a position closer to the third guide rail 13 than the first guide rail 11. That is, the distance from the second guide rail 12 to the third guide rail 13 is shorter than the distance from the first guide rail 11 to the third guide rail 13.

[0015] The third guide rail 13 is disposed at a position closer to the second guide rail 12 than the fourth guide rail 14. That is, the distance from the third guide rail 13 to the second guide rail 12 is shorter than the distance from the fourth guide rail 14 to the second guide rail 12.

[0016] Each of the plurality of guide rails 11 to 14 has a flange portion 15 and a guide portion 16. The flange portion 15 is a plate-like portion disposed along the longitudinal direction of the guide rail. The guide portion 16 is a protrusion provided on the flange portion 15 along the longitudinal direction of the guide rail. The cross-sectional shape of each of the plurality of guide rails 11 to 14 is a T shape by the flange portion 15 and the guide portion 16.

[0017] In each of the first guide rail 11 and the second guide rail 12, the guide portion 16 protrudes from the flange portion 15 toward the space between the first guide rail 11 and the second guide rail 12. In each of the third guide rail 13 and the fourth guide rail 14, the guide portion 16 protrudes from the flange portion 15 toward the space between the third guide rail 13 and the fourth guide rail 14.

[0018] In the hoistway 1, a pair of centering lines 2 serving as a reference for centering the plurality of guide rails 11 to 14 are arranged along the vertical direction. In the present embodiment, a pair of piano wires are used as the pair of centering lines 2. The pair of centering lines 2 are stretched along the vertical direction at preset positions in the hoistway 1. In the present embodiment, the pair of centering lines 2 are arranged at positions separated from each other in the width direction of the hoistway 1.

[0019] The guide rail centering device 3 is used when centering a plurality of guide rails 11 to 14. The guide rail centering device 3 has a first gauge 4, a second gauge 5, and a third gauge 6.

[0020] The first gauge 4 has a first gauge body 41, a first mounting portion 42, and a second mounting portion 43.

[0021] The first gauge body 41 is arranged along the width direction of the lifting path 1. The length of the first gauge body 41 is set according to the interval between a pair of centering lines 2. Of both ends of the first gauge body 41, a first mounting portion 42 is provided at one end, and a second mounting portion 43 is provided at the other end.

[0022] The first mounting portion 42 is attached to the first guide rail 11 by gripping the first guide rail 11. A first alignment portion 44 is provided on the first mounting portion 42. The first alignment portion 44 is arranged in accordance with the position of one of the pair of centering lines 2. In the present embodiment, the first alignment portion 44 is arranged in contact with one of the centering lines 2.

[0023] The second mounting portion 43 is attached to the second guide rail 12 by gripping the second guide rail 12. A second alignment portion 45 is provided on the second mounting portion 43. The second alignment portion 45 is arranged in accordance with the position of the other of the pair of centering lines 2. In the present embodiment, the second alignment portion 45 is arranged in contact with the other centering line 2.

[0024] The first gauge 4 is arranged at a position based on the pair of core alignment lines 2 by aligning the first alignment portion 44 with the position of one core alignment line 2 and aligning the second alignment portion 45 with the position of the other core alignment line 2. In the present embodiment, the first gauge 4 is arranged between the pair of core alignment lines 2. The first gauge 4 is attached to the first guide rail 11 and the second guide rail 12 and is arranged at a position based on the pair of core alignment lines 2, thereby performing core alignment of the first guide rail 11 and the second guide rail 12 respectively.

[0025] The second gauge 5 is arranged independently of the first gauge 4. The second gauge 5 has a second rail gripping portion 51 and a third rail gripping portion 52.

[0026] The second rail gripping portion 51 is attached to the second guide rail 12 independently of the first gauge 4 by gripping the second guide rail 12. The position of the second rail gripping portion 51 is set at a position away from the first gauge 4 in the longitudinal direction of the second guide rail 12. In the present embodiment, the second rail gripping portion 51 is attached to the second guide rail 12 at a position above and away from the first gauge 4. The second rail gripping portion 51 has a receiving member 511 and a regulating member 512.

[0027] A part of the receiving member 511 is overlapped with the back surface of the flange portion 15 of the second guide rail 12. Thereby, when viewed along the longitudinal direction of the second guide rail 12, the receiving member 511 is arranged along the back surface of the flange portion 15 of the second guide rail 12. In the present embodiment, the receiving member 511 is arranged along the depth direction of the lifting path 1.

[0028] The regulating member 512 is a plate-shaped member provided with a notch 513. The shape of the notch 513 is a shape adapted to the cross-sectional shape of the guiding portion 16 of the second guide rail 12. In the second rail gripping portion 51, with the guiding portion 16 of the second guide rail 12 inserted into the notch 513 and the regulating member 512 fitted onto the guiding portion 16 of the second guide rail 12, the regulating member 512 is attached to the receiving member 511. In the present embodiment, the regulating member 512 is attached to the receiving member 511 by a plurality of wing nuts 514 which are fasteners.

[0029] The second rail gripping portion 51 grips the second guide rail 12 with the second guide rail 12 sandwiched between the receiving member 511 and the regulating member 512. Thereby, the second rail gripping portion 51 is prevented from rotating with respect to the second guide rail 12.

[0030] The third rail gripping portion 52 is attached to the third guide rail 13 by gripping the third guide rail 13. The third rail gripping portion 52 has a receiving member 521 and a regulating member 522.

[0031] A part of the receiving member 521 is overlapped with the back surface of the flange portion 15 of the third guide rail 13. Thereby, when viewed along the longitudinal direction of the third guide rail 13, the receiving member 521 is arranged along the back surface of the flange portion 15 of the third guide rail 13. In the present embodiment, the receiving member 521 is arranged along the width direction of the lifting path 1.

[0032] The regulating member 522 is a plate-shaped member provided with a notch 523. The shape of the notch 523 is a shape adapted to the cross-sectional shape of the guiding portion 16 of the third guide rail 13. In the third rail gripping portion 52, with the guiding portion 16 of the third guide rail 13 inserted into the notch 523 and the regulating member 522 fitted onto the guiding portion 16 of the third guide rail 13, the regulating member 522 is attached to the receiving member 521. In the present embodiment, the regulating member 522 is attached to the receiving member 521 by a plurality of wing nuts 524 which are fasteners.

[0033] The third rail gripping portion 52 grips the third guide rail 13 in a state where the third guide rail 13 is sandwiched between the receiving member 521 and the regulating member 522. Thereby, the third rail gripping portion 52 is prevented from rotating with respect to the third guide rail 13.

[0034] The receiving member 521 of the third rail gripping portion 52 is fixed to the receiving member 511 of the second rail gripping portion 51 by a plurality of bolts 53 which are fastening tools. Thereby, the third rail gripping portion 52 is fixed to the second rail gripping portion 51.

[0035] The second gauge 5 is attached to the third guide rail 13 and is attached to the second guide rail 12 independently from the first gauge 4, thereby positioning the third guide rail 13 with respect to the second guide rail 12.

[0036] The third gauge 6 has a fourth rail gripping portion 61 and a plurality of sub - gauges 62.

[0037] The fourth rail gripping portion 61 is attached to the fourth guide rail 14 by gripping the fourth guide rail 14. The fourth rail gripping portion 61 has a receiving member 611 and a regulating member 612.

[0038] The receiving member 611 is overlapped with the back surface of the flange portion 15 of the fourth guide rail 14. Thereby, when viewed along the longitudinal direction of the fourth guide rail 14, the receiving member 611 is arranged along the back surface of the flange portion 15 of the fourth guide rail 14. In the present embodiment, the receiving member 611 is arranged along the width direction of the lifting path 1.

[0039] The regulating member 612 is a plate-shaped member provided with a notch 613. The shape of the notch 613 is a shape adapted to the cross-sectional shape of the guiding portion 16 of the fourth guide rail 14. In the fourth rail gripping portion 61, with the guiding portion 16 of the fourth guide rail 14 inserted into the notch 613 and the regulating member 612 fitted onto the guiding portion 16 of the fourth guide rail 14, the regulating member 612 is attached to the receiving member 611. In the present embodiment, the regulating member 612 is attached to the receiving member 611 by a plurality of wing nuts 614 which are fasteners.

[0040] The fourth rail gripping portion 61 grips the fourth guide rail 14 with the fourth guide rail 14 sandwiched between the receiving member 611 and the regulating member 612. Thereby, the fourth rail gripping portion 61 is prevented from rotating with respect to the fourth guide rail 14.

[0041] The plurality of sub-gages 62 are a plurality of connecting portions that connect the fourth rail gripping portion 61 to the second gage 5. The plurality of sub-gages 62 are arranged side by side in the horizontal direction. In the present embodiment, the fourth rail gripping portion 61 is connected to the second gage 5 via two sub-gages 62 arranged at intervals in the width direction of the hoistway 1.

[0042] One end portion of each sub-gage 62 is attached to the regulating member 612 of the fourth rail gripping portion 61 by a pin 63 which is a connector. The other end portion of each sub-gage 62 is attached to the regulating member 522 of the third rail gripping portion 52 by a pin 64 which is a connector. By attaching the plurality of sub-gages 62 to the regulating member 522 of the third rail gripping portion 52, the third gage 6 is attached to the second gage 5.

[0043] The third gage 6 is attached to the fourth guide rail 14 and also attached to the second gage 5, thereby positioning the fourth guide rail 14 with respect to the third guide rail 13.

[0044] Next, a method for aligning guide rails of an elevator that aligns a plurality of guide rails 11 to 14 will be described. FIG. 2 is a flowchart showing a guide rail alignment method using the guide rail alignment device 3 of FIG. 1. The guide rail alignment method includes a first gauge attachment step S1, a second gauge attachment step S2, a first gauge placement step S3, and a third gauge attachment step S4. When aligning a plurality of guide rails 11 to 14, each step is performed in the order of the first gauge attachment step S1, the second gauge attachment step S2, the first gauge placement step S3, and the third gauge attachment step S4.

[0045] <First gauge attachment step S1> In the first gauge attachment step S1, a first gauge 4 is attached to the first guide rail 11 and the second guide rail 12.

[0046] FIG. 3 is a perspective view showing a state in which the first gauge 4 is attached to the first guide rail 11 and the second guide rail 12 of FIG. 1. In the first gauge attachment step S1, a first attachment portion 42 is attached to the first guide rail 11, and a second attachment portion 43 is attached to the second guide rail 12. Thereby, the second guide rail 12 is held by the first guide rail 11 via the first gauge 4, and the second guide rail 12 is positioned with respect to the first guide rail 11. When the second guide rail 12 is positioned with respect to the first guide rail 11, the first guide rail 11 and the second guide rail 12 are arranged to face each other.

[0047] <Second gauge attachment step S2> After the first gauge attachment step S1, the second gauge attachment step S2 is performed. In the second gauge attachment step S2, a second gauge 5 is attached to the third guide rail 13, and a second gauge 5 independent of the first gauge 4 is attached to the second guide rail 12.

[0048] FIG. 4 is a perspective view showing a state in which the second gauge 5 is attached to the second guide rail 12 and the third guide rail 13 of FIG. 3. A receiving member 521 is preliminarily fixed to the receiving member 511 by a plurality of bolts 53. In the second gauge attachment step S2, the second rail gripping portion 51 is attached to the second guide rail 12, and the third rail gripping portion 52 is attached to the third guide rail 13. Thereby, the third guide rail 13 is held by the second guide rail 12 via the second gauge 5, and the positioning of the third guide rail 13 with respect to the second guide rail 12 is performed.

[0049] When attaching the second rail gripping portion 51 to the second guide rail 12, the receiving member 511 is overlapped with the back surface of the flange portion 15 of the second guide rail 12, and the restricting member 512 is fitted into the guide portion 16 of the second guide rail 12. After that, the restricting member 512 is fixed to the receiving member 511 by a wing nut 514. Thereby, the second rail gripping portion 51 is attached to the second guide rail 12. At this time, the second rail gripping portion 51 is disposed at a position away from the second attachment portion 43 of the first gauge 4 in the longitudinal direction of the second guide rail 12. In the present embodiment, the second rail gripping portion 51 is disposed at a position above and away from the second attachment portion 43 of the first gauge 4.

[0050] When attaching the third rail gripping portion 52 to the third guide rail 13, the receiving member 521 is overlapped with the back surface of the flange portion 15 of the third guide rail 13, and the restricting member 522 is fitted into the guide portion 16 of the third guide rail 13. After that, the restricting member 522 is fixed to the receiving member 521 by a wing nut 524. Thereby, the third rail gripping portion 52 is attached to the third guide rail 13.

[0051] <First Gauge Arrangement Step S3> After the second gauge mounting step S2, a first gauge placement step S3 is performed. In the first gauge placement step S3, the first gauge 4 is placed at a position based on the pair of centering wires 2. At this time, the first alignment portion 44 of the first gauge 4 is aligned with the position of one of the centering wires 2, and the second alignment portion 45 of the first gauge 4 is aligned with the position of the other centering wire 2. In this way, the position of the first gauge 4 is adjusted based on the pair of centering wires 2.

[0052] When the position of the first gauge 4 is adjusted based on the pair of centering wires 2, the positions of the first guide rail 11 and the second guide rail 12 are automatically adjusted based on the pair of centering wires 2. Further, since the positioning of the third guide rail 13 with respect to the second guide rail 12 has already been performed, when the position of the first gauge 4 is adjusted based on the pair of centering wires 2, the position of the third guide rail 13 is also automatically adjusted based on the pair of centering wires 2. Thereby, the centering of the first guide rail 11, the second guide rail 12, and the third guide rail 13 is simultaneously performed.

[0053] <Third Gauge Mounting Step S4> After the first gauge placement step S3, a third gauge mounting step S4 is performed. In the third gauge mounting step S4, as shown in FIG. 1, the third gauge 6 is attached to the fourth guide rail 14 and the third gauge 6 is attached to the second gauge 5. Thereby, the fourth guide rail 14 is held via the third gauge 6 by the second gauge 5 attached to the third guide rail 13, and the positioning of the fourth guide rail 14 with respect to the third guide rail 13 is performed. When the positioning of the fourth guide rail 14 with respect to the third guide rail 13 is performed, the third guide rail 13 and the fourth guide rail 14 are arranged to face each other. Since the centering of the third guide rail 13 has already been performed, the centering of the fourth guide rail 14 is performed by performing the positioning of the fourth guide rail 14 with respect to the third guide rail 13.

[0054] In the third gauge attachment step S4, the fourth rail gripping portion 61 is attached to the fourth guide rail 14, and the fourth rail gripping portion 61 is connected to the second gauge 5 by a plurality of sub - gauges 62.

[0055] When attaching the fourth rail gripping portion 61 to the fourth guide rail 14, a receiving member 611 is overlapped on the back surface of the flange portion 15 of the fourth guide rail 14, and a restricting member 612 is fitted into the guiding portion 16 of the fourth guide rail 14. After that, the restricting member 612 is fixed to the receiving member 611 by a wing nut 614. Thereby, the fourth rail gripping portion 61 is attached to the fourth guide rail 14.

[0056] When connecting the fourth rail gripping portion 61 to the second gauge 5, one end portion of each sub - gauge 62 is attached to the restricting member 612 by a pin 63, and the other end portion of each sub - gauge 62 is attached to the restricting member 522 by a pin 64. Thereby, the fourth rail gripping portion 61 is connected to the second gauge 5 by a plurality of sub - gauges 62.

[0057] Each of the guide rails 11 - 14 is constituted by continuously joining unit rails. In the guide rail centering method, while joining the unit rails in each of the guide rails 11 - 14 from the bottom of the lifting path 1 upward, the guide rail centering device 3 is sequentially moved upward from the bottom of the lifting path 1, thereby sequentially centering each of the guide rails 11 - 14. The operator works while riding on a work floor that can move vertically within the lifting path 1. Each of the centered guide rails 11 - 14 is firmly fixed to a bracket within the lifting path 1.

[0058] In such a guide rail centering device 3, a second gauge 5 for positioning the third guide rail 13 with respect to the second guide rail 12 is attached to the second guide rail 12 independently of the first gauge 4. Therefore, the position of the second gauge 5 can be determined without being restricted by the position of the first gauge 4. As a result, even if there are obstacles such as brackets, the second gauge 5 can be arranged while avoiding the obstacles, and the positioning of the third guide rail 13 with respect to the second guide rail 12 can be performed more reliably. Therefore, the centering of the plurality of guide rails 11 to 14 can be performed more reliably.

[0059] In addition, since the mutually independent first gauge 4 and second gauge 5 are attached to the common second guide rail 12, it is no longer necessary to position the second gauge 5 with respect to the first gauge 4. As a result, a sub-gauge for positioning the second gauge 5 with respect to the first gauge 4 can be eliminated. Therefore, the number and types of sub-gauges can be reduced, and the cost of the guide rail centering device 3 can be reduced. In addition, a state in which the sub-gauge is arranged within the working area of the operator can be avoided, and the burden of the work of centering the plurality of guide rails 11 to 14 while avoiding the sub-gauge can also be reduced.

[0060] In addition, the second gauge 5 has a second rail gripping portion 51 that grips the second guide rail 12 and a third rail gripping portion 52 that grips the third guide rail 13. Therefore, displacement of the second gauge 5 with respect to each of the second guide rail 12 and the third guide rail 13 can be suppressed. As a result, the positioning of the third guide rail 13 with respect to the second guide rail 12 can be performed more reliably, and the centering of the plurality of guide rails 11 to 14 can be performed even more reliably.

[0061] Further, the third gauge 6 has a fourth rail gripping portion 61 that grips the fourth guide rail 14 and a plurality of sub-gauges 62 that connect the fourth rail gripping portion 61 to the second gauge 5. Therefore, displacement of the third gauge 6 with respect to the fourth guide rail 14 can be suppressed, and positioning of the fourth rail gripping portion 61 with respect to the second gauge 5 can be performed more reliably. Thereby, positioning of the fourth guide rail 14 with respect to the third guide rail 13 can be performed more reliably. Further, since the lengths of the plurality of sub-gauges 62 can be made the same, the types of sub-gauges 62 can be reduced. Thereby, the cost of the guide rail centering device 3 can be reduced.

[0062] Also, in such a guide rail centering method, in the second gauge mounting step S2, the second gauge 5 is attached to the second guide rail 12 independently of the first gauge 4. Therefore, the position of the second gauge 5 can be determined without being restricted by the position of the first gauge 4. Thereby, positioning of the third guide rail 13 with respect to the second guide rail 12 can be performed more reliably, and centering of the plurality of guide rails 11 to 14 can be performed more reliably. Further, since the mutually independent first gauge 4 and second gauge 5 are attached to the common second guide rail 12, a sub-gauge for positioning the second gauge 5 with respect to the first gauge 4 can be eliminated. Therefore, the cost of the guide rail centering device 3 can be reduced, and the burden of the work of centering the plurality of guide rails 11 to 14 can be reduced.

[0063] Also, the first gauge arrangement step S3 is performed after the second gauge mounting step S2. Therefore, centering of each of the first guide rail 11 and the second guide rail 12 can be performed in a state where the position of the third guide rail 13 with respect to the second guide rail 12 is determined. Therefore, by centering each of the first guide rail 11 and the second guide rail 12, centering of the third guide rail 13 can be automatically performed. Thereby, centering of the plurality of guide rails 11 to 14 can be easily performed.

[0064] In the above embodiment, the third guide rail 13 and the fourth guide rail 14 are arranged to face each other in the depth direction of the hoistway 1. However, the third guide rail 13 and the fourth guide rail 14 may be arranged to face each other in the width direction of the hoistway 1. In this case, the third guide rail 13 is arranged at a position closer to the second guide rail 12 than the fourth guide rail 14. Also, in this case, the second guide rail 12 is arranged at a position closer to the third guide rail 13 than the first guide rail 11. In this case, when the hoistway 1 is viewed from above, the counterweight is arranged next to the cage in the depth direction of the hoistway 1.

[0065] Also, in the above embodiment, the first gauge arrangement step S3 is carried out after the second gauge attachment step S2. However, the first gauge arrangement step S3 may be carried out before the second gauge attachment step S2 and after the first gauge attachment step S1.

[0066] Also, in the above embodiment, the second gauge attachment step S2 is carried out after the first gauge attachment step S1. However, the second gauge attachment step S2 may be carried out before the first gauge attachment step S1.

[0067] As described above, the configuration shown in the above embodiment is an example of the content of the present disclosure. The embodiment can be combined with another known technique. It is possible to omit or change a part of the configuration of the embodiment without departing from the gist of the present disclosure.

Explanation of Reference Numerals

[0068] 2 core extraction wire, 3 guide rail core extraction device, 4 first gauge, 5 second gauge, 6 third gauge, 11 first guide rail, 12 second guide rail, 13 third guide rail, 14 fourth guide rail, 51 second rail gripping portion, 52 third rail gripping portion, 61 fourth rail gripping portion, 62 sub gauge (connecting portion).

Claims

1. A first gauge that is attached to a first guide rail and a second guide rail arranged opposite to each other, and is arranged at a position based on a pair of centering lines arranged along the vertical direction, for centering each of the first guide rail and the second guide rail; Among a third guide rail and a fourth guide rail arranged opposite to each other, a second gauge that is attached to the third guide rail and is attached to the second guide rail independently of the first gauge, for positioning the third guide rail with respect to the second guide rail; A third gauge that is attached to the fourth guide rail and is attached to the second gauge, for positioning the fourth guide rail with respect to the third guide rail An elevator guide rail centering device comprising the above.

2. The second gauge has a second rail gripping portion that grips the second guide rail and a third rail gripping portion that grips the third guide rail, The elevator guide rail centering device according to claim 1, wherein the third rail gripping portion is fixed to the second rail gripping portion.

3. The elevator guide rail centering device according to claim 1 or claim 2, wherein the third gauge has a fourth rail gripping portion that grips the fourth guide rail and a plurality of connecting portions that connect the fourth rail gripping portion to the second gauge.

4. A first gauge mounting step of mounting a first gauge on a first guide rail and a second guide rail arranged opposite to each other; After the first gauge mounting step, a first gauge arranging step of arranging the first gauge at a position based on a pair of centering lines arranged along the vertical direction to center each of the first guide rail and the second guide rail; Among a third guide rail and a fourth guide rail arranged opposite to each other, a second gauge mounting step of mounting a second gauge on the third guide rail and mounting the second gauge on the second guide rail independently of the first gauge to position the third guide rail with respect to the second guide rail; After the first gauge arrangement step and the second gauge attachment step, a third gauge is attached to the fourth guide rail, and the third gauge is attached to the second gauge, thereby performing a third gauge attachment step of positioning the fourth guide rail with respect to the third guide rail. A method for aligning the guide rails of an elevator equipped therewith.

5. The method for aligning the guide rails of an elevator according to claim 4, wherein the first gauge arrangement step is performed after the second gauge attachment step.

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