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

Abstract

The invention provides a guide rail centering device of an elevator and a guide rail centering method of the elevator, which can more reliably center a plurality of guide rails. In a guide rail centering device (3) for an elevator, a first gauge (4) is attached to a first guide rail (11) and a second guide rail (12), and is disposed at a position based on a pair of centering lines (2). A second gauge (5) is mounted to the third guide rail (13) and to the second guide rail (12) independently of the first gauge (4). A third gauge (6) is mounted to the fourth guide rail (14) and to the second gauge (5).

Description

Technical Field

[0001] The present disclosure relates to a guide rail centering device for an elevator and a method for centering a guide rail of an elevator. Background Art

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

[0003] In Patent Document 1, a guide rail centering device for an elevator is disclosed. The first gauge is engaged with a pair of car guide rails, and the second gauge is engaged with a pair of counterweight guide rails, thereby centering each guide rail. The second gauge is connected to the first gauge via a plurality of sub gauges. Thus, the position of the second gauge relative to the first gauge is fixed.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2002-362850 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] In the existing 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. Therefore, depending on the layout of each guide rail, when the first gauge is engaged with the car guide rail, the guide rail bracket or the like supporting each guide rail may become an obstacle, and it may be impossible to arrange the sub gauges between the first gauge and the second gauge. Thus, depending on the layout of each guide rail, it may be impossible to perform centering using the existing elevator guide rail centering device.

[0009] The present disclosure is for solving the above-described problems, and an object thereof is to provide an elevator guide rail centering device capable of more reliably centering a plurality of guide rails.

[0010] Means for Solving the Problems

[0011] The guide rail centering device of the elevator according to the present disclosure includes: a first gauge, which is installed on 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, so as to be used for centering the first guide rail and the second guide rail respectively; a second gauge, which is installed on the third guide rail among the third guide rail and the fourth guide rail arranged opposite to each other, and is independently installed on the second guide rail with respect to the first gauge, so as to be used for positioning the third guide rail relative to the second guide rail; and a third gauge, which is installed on the fourth guide rail, and is installed on the second gauge, so as to be used for positioning the fourth guide rail relative to the third guide rail.

[0012] In addition, the guide rail centering method of the elevator according to the present disclosure includes: a first gauge installation step of installing the first gauge on the first guide rail and the second guide rail arranged opposite to each other; a first gauge arrangement step of, after the first gauge installation step, arranging the first gauge 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 second gauge installation step of installing the second gauge on the third guide rail among the third guide rail and the fourth guide rail arranged opposite to each other, and independently installing the second gauge on the second guide rail with respect to the first gauge, thereby positioning the third guide rail relative to the second guide rail; and a third gauge installation step of, after the first gauge arrangement step and the second gauge installation step, installing the third gauge on the fourth guide rail, and installing the third gauge on the second gauge, thereby positioning the fourth guide rail relative to the third guide rail.

[0013] Advantages of the Invention

[0014] According to the guide rail centering device of the elevator and the guide rail centering method of the elevator according to the present disclosure, centering of multiple guide rails can be performed more reliably. Description of the Drawings

[0015] Figure 1 It is a perspective view showing the guide rail centering device of the elevator according to Embodiment 1.

[0016] Figure 2 It shows the use of Figure 1 The flowchart of the guide rail centering method of the guide rail centering device.

[0017] Figure 3 It shows the state in Figure 1 where the first gauge is installed on the first guide rail and the second guide rail.

[0018] Figure 4 It shows the state in Figure 3 where the second gauge is installed on the second guide rail and the third guide rail.

[0019] Reference Signs

[0020] 2: Centering line, 3: Guide rail centering 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 guide rail gripping part, 52: Third guide rail gripping part, 61: Fourth guide rail gripping part, 62: Sub-gauge (connection part). Detailed implementation mode

[0021] The mode for implementing the object of the present disclosure will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are marked with the same reference numerals, and repeated descriptions are appropriately simplified or omitted. In addition, the object of the present disclosure is not limited to the following implementation modes, and within the scope not departing from the gist of the present disclosure, deformation of any constituent element of the implementation mode or omission of any constituent element of the implementation mode can be carried out.

[0022] Implementation mode 1.

[0023] Figure 1 It is a perspective view showing the guide rail centering device of the elevator in Implementation mode 1. In the figure, in the hoistway 1, the first guide rail 11, the second guide rail 12, the third guide rail 13 and the fourth guide rail 14 are arranged as a plurality of guide rails 11-14.

[0024] 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 is the same as the left-right direction when observing the hoistway 1 from an unillustrated landing 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 movement of an unillustrated car in the up-down direction. The car is arranged between the first guide rail 11 and the second guide rail 12.

[0025] 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 perpendicular 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 movement of an unillustrated counterweight in the up-down direction. The counterweight is arranged between the third guide rail 13 and the fourth guide rail 14. In the present implementation mode, when observing the hoistway 1 from above, the counterweight is arranged beside the car in the width direction of the hoistway 1.

[0026] The second guide rail 12 is arranged 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.

[0027] The third guide rail 13 is arranged 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.

[0028] The plurality of guide rails 11 to 14 each have a flange portion 15 and a guide portion 16. The flange portion 15 is a plate-shaped portion arranged along the length direction of the guide rail. The guide portion 16 is a protrusion provided on the flange portion 15 along the length direction of the guide rail. The cross-sectional shape of each of the plurality of guide rails 11 to 14 becomes a T shape by the flange portion 15 and the guide portion 16.

[0029] 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.

[0030] 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 tensioned along the vertical direction at a preset position 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.

[0031] The guide rail centering device 3 is used when centering the 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.

[0032] The first gauge 4 has a first gauge body 41, a first mounting portion 42, and a second mounting portion 43.

[0033] The first gauge body 41 is arranged along the width direction of the hoistway 1. The length of the first gauge body 41 is set to match the interval between the pair of centering lines 2. The first mounting portion 42 is provided at one end of the two end portions of the first gauge body 41, and the second mounting portion 43 is provided at the other end.

[0034] The first mounting portion 42 is mounted 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 to be aligned with the position of one of the pair of centering lines 2. In the present embodiment, the first alignment portion 44 is arranged to be in contact with one of the centering lines 2.

[0035] The second mounting portion 43 is mounted 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 to be aligned with the position of the other of the pair of centering lines 2. In the present embodiment, the second alignment portion 45 is arranged to be in contact with the other centering line 2.

[0036] The first gauge 4 is arranged at a position based on the pair of centering lines 2 by aligning the first alignment portion 44 with the position of one of the centering lines 2 and aligning the second alignment portion 45 with the position of the other centering line 2. In the present embodiment, the first gauge 4 is arranged between the pair of centering lines 2. The first gauge 4 is mounted to the first guide rail 11 and the second guide rail 12 and is arranged at a position based on the pair of centering lines 2, thereby centering the first guide rail 11 and the second guide rail 12 respectively.

[0037] The second gauge 5 is arranged independently of the first gauge 4. The second gauge 5 has a second guide rail gripping portion 51 and a third guide rail gripping portion 52.

[0038] The second guide rail gripping portion 51 is mounted to the second guide rail 12 independently of the first gauge 4 by gripping the second guide rail 12. The position of the second guide rail gripping portion 51 is set to a position away from the first gauge 4 in the longitudinal direction of the second guide rail 12. In the present embodiment, the second guide rail gripping portion 51 is mounted to the second guide rail 12 at a position away from the first gauge 4 upward. The second guide rail gripping portion 51 has a bearing member 511 and a restricting member 512.

[0039] A part of the bearing member 511 overlaps the back surface of the flange portion 15 of the second guide rail 12. Thus, the bearing member 511 when viewed along the longitudinal direction of the second guide rail 12 is arranged along the back surface of the flange portion 15 of the second guide rail 12. In the present embodiment, the bearing member 511 is arranged along the depth direction of the hoistway 1.

[0040] The restricting member 512 is a plate-like member provided with a cutout portion 513. The shape of the cutout portion 513 is a shape matching the cross-sectional shape of the guide portion 16 of the second guide rail 12. In the second guide rail gripping portion 51, the restricting member 512 is mounted to the bearing member 511 in a state where the guide portion 16 of the second guide rail 12 is inserted into the cutout portion 513 and the restricting member 512 is fitted to the guide portion 16 of the second guide rail 12. In the present embodiment, the restricting member 512 is mounted to the bearing member 511 by a plurality of wing nuts 514 as fasteners.

[0041] The second guide rail gripping portion 51 grips the second guide rail 12 in a state where the second guide rail 12 is sandwiched between the bearing member 511 and the restricting member 512. Thus, rotation of the second guide rail gripping portion 51 relative to the second guide rail 12 is prevented.

[0042] The third guide rail gripping portion 52 is mounted to the third guide rail 13 by gripping the third guide rail 13. The third guide rail gripping portion 52 has a bearing member 521 and a restricting member 522.

[0043] A part of the receiving member 521 overlaps with the back surface of the flange portion 15 of the third guide rail 13. Thus, when viewed along the length 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 hoistway 1.

[0044] The restricting member 522 is a plate-like member provided with a cutout portion 523. The shape of the cutout portion 523 is a shape that matches the cross-sectional shape of the guiding portion 16 of the third guide rail 13. In the third guide rail holding portion 52, in a state where the guiding portion 16 of the third guide rail 13 is inserted into the cutout portion 523 and the restricting member 522 is fitted to the guiding portion 16 of the third guide rail 13, the restricting member 522 is attached to the receiving member 521. In the present embodiment, the restricting member 522 is attached to the receiving member 521 by a plurality of wing screws 524 as fasteners.

[0045] The third guide rail holding portion 52 holds the third guide rail 13 in a state where the third guide rail 13 is sandwiched between the receiving member 521 and the restricting member 522. Thereby, rotation of the third guide rail holding portion 52 with respect to the third guide rail 13 is prevented.

[0046] The receiving member 521 of the third guide rail holding portion 52 is fixed to the receiving member 511 of the second guide rail holding portion 51 by a plurality of bolts 53 as fasteners. Thereby, the third guide rail holding portion 52 is fixed to the second guide rail holding portion 51.

[0047] The second gauge 5 is attached to the third guide rail 13 and is attached to the second guide rail 12 independently of the first gauge 4, thereby positioning the third guide rail 13 with respect to the second guide rail 12.

[0048] The third gauge 6 has a fourth guide rail holding portion 61 and a plurality of sub gauges 62.

[0049] The fourth guide rail holding portion 61 is attached to the fourth guide rail 14 by holding the fourth guide rail 14. The fourth guide rail holding portion 61 has a receiving member 611 and a restricting member 612.

[0050] The receiving member 611 overlaps with the back surface of the flange portion 15 of the fourth guide rail 14. Thus, when viewed along the length 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 hoistway 1.

[0051] The restricting member 612 is a plate-like member provided with a cutout portion 613. The shape of the cutout portion 613 is a shape that matches the cross-sectional shape of the guiding portion 16 of the fourth guide rail 14. In the fourth guide rail holding portion 61, in a state where the guiding portion 16 of the fourth guide rail 14 is inserted into the cutout portion 613 and the restricting member 612 is fitted to the guiding portion 16 of the fourth guide rail 14, the restricting member 612 is attached to the receiving member 611. In the present embodiment, the restricting member 612 is attached to the receiving member 611 by a plurality of wing nuts 614 as fasteners.

[0052] The fourth guide rail holding portion 61 holds the fourth guide rail 14 in a state where the fourth guide rail 14 is sandwiched between the receiving member 611 and the restricting member 612. Thereby, rotation of the fourth guide rail holding portion 61 with respect to the fourth guide rail 14 is prevented.

[0053] The plurality of sub gauges 62 are a plurality of connecting portions that connect the fourth guide rail holding portion 61 and the second gauge 5. The plurality of sub gauges 62 are arranged in the horizontal direction. In the present embodiment, the fourth guide rail holding portion 61 is connected to the second gauge 5 via two sub gauges 62 arranged at intervals in the width direction of the hoistway 1.

[0054] One end portion of each sub gauge 62 is attached to the restricting member 612 of the fourth guide rail holding portion 61 by a pin 63 as a connecting member. The other end portion of each sub gauge 62 is attached to the restricting member 522 of the third guide rail holding portion 52 by a pin 64 as a connecting member. By attaching the plurality of sub gauges 62 to the restricting member 522 of the third guide rail holding portion 52, the third gauge 6 is attached to the second gauge 5.

[0055] The third gauge 6 is attached to the fourth guide rail 14 and is attached to the second gauge 5, thereby positioning the fourth guide rail 14 with respect to the third guide rail 13.

[0056] Next, a method for centering a plurality of guide rails 11 to 14 of an elevator will be described. Figure 2 is a flowchart showing a method for centering guide rails using the Figure 1 guide rail centering device 3. The guide rail centering method includes a first gauge attachment step S1, a second gauge attachment step S2, a first gauge arrangement step S3, and a third gauge attachment step S4. When centering a plurality of guide rails 11 to 14, each step is carried out in the order of the first gauge attachment step S1, the second gauge attachment step S2, the first gauge arrangement step S3, and the third gauge attachment step S4.

[0057] <First gauge attachment step S1>

[0058] In the first gauge attachment step S1, the first gauge 4 is attached to the first guide rail 11 and the second guide rail 12.

[0059] Figure 3 It represents a perspective view of the state where the first gauge 4 is installed on the first guide rail 11 and the second guide rail 12 in Figure 1 . In the first gauge installation process S1, the first mounting portion 42 is mounted to the first guide rail 11, and the second mounting portion 43 is mounted to the second guide rail 12. Thus, the second guide rail 12 is held by the first gauge 4 with respect to the first guide rail 11, 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 opposite to each other.

[0060] <Second gauge installation process S2>

[0061] After the first gauge installation process S1, the second gauge installation process S2 is implemented. In the second gauge installation process S2, the second gauge 5 is mounted to the third guide rail 13, and the second gauge 5 is mounted to the second guide rail 12 independently of the first gauge 4.

[0062] Figure 4 It represents a perspective view of the state where the second gauge 5 is installed on the second guide rail 12 and the third guide rail 13 in Figure 3 . The receiving member 521 is pre-fixed to the receiving member 511 by a plurality of bolts 53. In the second gauge installation process S2, the second guide rail gripping portion 51 is mounted to the second guide rail 12, and the third guide rail gripping portion 52 is mounted to the third guide rail 13. Thus, the third guide rail 13 is held by the second gauge 5 with respect to the second guide rail 12, and the third guide rail 13 is positioned with respect to the second guide rail 12.

[0063] When the second guide rail gripping portion 51 is mounted to the second guide rail 12, the receiving member 511 is overlapped on 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. Then, the restricting member 512 is fixed to the receiving member 511 by the wing screw 514. Thus, the second guide rail gripping portion 51 is mounted to the second guide rail 12. At this time, the second guide rail gripping portion 51 is arranged at a position away from the second mounting portion 43 of the first gauge 4 in the longitudinal direction of the second guide rail 12. In the present embodiment, the second guide rail gripping portion 51 is arranged at a position away from the second mounting portion 43 of the first gauge 4 upward.

[0064] When the third guide rail gripping portion 52 is mounted to the third guide rail 13, the receiving member 521 is overlapped on 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. Then, the restricting member 522 is fixed to the receiving member 521 by the wing screw 524. Thus, the third guide rail gripping portion 52 is mounted to the third guide rail 13.

[0065] <First gauge configuration process S3>

[0066] After the second gauge installation process S2, the first gauge configuration process S3 is implemented. In the first gauge configuration process S3, the first gauge 4 is configured at a position based on a pair of centering lines 2. At this time, the first alignment portion 44 of the first gauge 4 is aligned with the position of one of the centering lines 2, and the second alignment portion 45 of the first gauge 4 is aligned with the position of the other centering line 2. In this way, the position of the first gauge 4 is adjusted based on a pair of centering lines 2.

[0067] When the position of the first gauge 4 is adjusted based on a pair of centering lines 2, the positions of the first guide rail 11 and the second guide rail 12 are automatically adjusted based on a pair of centering lines 2. In addition, since the positioning of the third guide rail 13 relative to the second guide rail 12 has been performed, when the position of the first gauge 4 is adjusted based on a pair of centering lines 2, the position of the third guide rail 13 is also automatically adjusted based on a pair of centering lines 2. Thus, the first guide rail 11, the second guide rail 12, and the third guide rail 13 are each centered simultaneously.

[0068] <Third gauge installation process S4>

[0069] After the first gauge configuration process S3, the third gauge installation process S4 is implemented. In the third gauge installation process S4, as Figure 1 shown, the third gauge 6 is installed on the fourth guide rail 14, and the third gauge 6 is installed on the second gauge 5. Thus, the fourth guide rail 14 is held by the third gauge 6 and is installed on the second gauge 5 that is installed on the third guide rail 13, and the fourth guide rail 14 is positioned relative to the third guide rail 13. When the fourth guide rail 14 is positioned relative to the third guide rail 13, the third guide rail 13 and the fourth guide rail 14 are arranged opposite to each other. Since the centering of the third guide rail 13 has been performed, by positioning the fourth guide rail 14 relative to the third guide rail 13, the fourth guide rail 14 is centered.

[0070] In the third gauge installation process S4, the fourth guide rail holding portion 61 is installed on the fourth guide rail 14, and the fourth guide rail holding portion 61 is connected to the second gauge 5 by a plurality of sub - gauges 62.

[0071] When the fourth guide rail holding portion 61 is installed on the fourth guide rail 14, the bearing member 611 is overlapped on the back surface of the flange portion 15 of the fourth guide rail 14, and the restricting member 612 is fitted into the guide portion 16 of the fourth guide rail 14. Then, the restricting member 612 is fixed to the bearing member 611 by a wing screw 614. Thus, the fourth guide rail holding portion 61 is installed on the fourth guide rail 14.

[0072] When connecting the fourth guide rail holding part 61 to the second gauge 5, one end of each sub-gauge 62 is mounted to the restricting part 612 using a pin 63, and the other end of each sub-gauge 62 is mounted to the restricting part 522 using a pin 64. Thus, the fourth guide rail holding part 61 is connected to the second gauge 5 through a plurality of sub-gauges 62.

[0073] Each of the guide rails 11 - 14 is formed by continuously joining unit guide rails. In the guide rail centering method, while joining the unit guide rails in each of the guide rails 11 - 14 from the bottom of the hoistway 1 upward, the guide rail centering device 3 is sequentially moved upward from the bottom of the hoistway 1, thereby centering each of the guide rails 11 - 14 in sequence. An operator performs the operation on a work platform that can move in the vertical direction within the hoistway 1. Each of the centered guide rails 11 - 14 is firmly fixed to a bracket within the hoistway 1.

[0074] In such a guide rail centering device 3, the second gauge 5 for positioning the third guide rail 13 relative to the second guide rail 12 is independently mounted to the second guide rail 12 from 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. Thus, 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 relative to the second guide rail 12 can be performed more reliably. Therefore, the centering of the plurality of guide rails 11 - 14 can be performed more reliably.

[0075] In addition, since the mutually independent first gauge 4 and second gauge 5 are mounted to the common second guide rail 12, there is no need to position the second gauge 5 relative to the first gauge 4. Thus, the sub-gauge for positioning the second gauge 5 relative 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, the state of arranging the sub-gauges within the operator's work area can be avoided, and the burden of the operation of centering the plurality of guide rails 11 - 14 while avoiding the sub-gauges can also be alleviated.

[0076] In addition, the second gauge 5 has a second guide rail holding part 51 for holding the second guide rail 12 and a third guide rail holding part 52 for holding the third guide rail 13. Therefore, the position offset of the second gauge 5 relative to each of the second guide rail 12 and the third guide rail 13 can be suppressed. Thus, the positioning of the third guide rail 13 relative to the second guide rail 12 can be performed more reliably, and the centering of the plurality of guide rails 11 - 14 can be performed more reliably.

[0077] In addition, the third gauge 6 has a fourth guide rail gripping portion 61 that grips the fourth guide rail 14 and a plurality of sub-gauges 62 that connect the fourth guide rail gripping portion 61 to the second gauge 5. Therefore, it is possible to suppress the positional deviation of the third gauge 6 with respect to the fourth guide rail 14, and it is possible to more reliably position the fourth guide rail gripping portion 61 with respect to the second gauge 5. As a result, it is possible to more reliably position the fourth guide rail 14 with respect to the third guide rail 13. In addition, the lengths of the plurality of sub-gauges 62 can be made the same, so the types of sub-gauges 62 can be reduced. As a result, it is possible to reduce the cost of the guide rail centering device 3.

[0078] In addition, in such a guide rail centering method, in the second gauge installation step S2, the second gauge 5 is installed on 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, it is possible to more reliably position the third guide rail 13 with respect to the second guide rail 12, and it is possible to more reliably center the plurality of guide rails 11 to 14. In addition, since the mutually independent first gauge 4 and second gauge 5 are installed on the common second guide rail 12, it is possible to eliminate the sub-gauge for positioning the second gauge 5 with respect to the first gauge 4. Therefore, it is possible to reduce the cost of the guide rail centering device 3 and reduce the burden of the operation of centering the plurality of guide rails 11 to 14.

[0079] In addition, the first gauge placement step S3 is performed after the second gauge installation step S2. Therefore, it is possible to center the first guide rail 11 and the second guide rail 12 respectively in a state where the position of the third guide rail 13 with respect to the second guide rail 12 is determined. Therefore, it is possible to automatically center the third guide rail 13 by centering the first guide rail 11 and the second guide rail 12 respectively. As a result, it is possible to easily center the plurality of guide rails 11 to 14.

[0080] In addition, in the above-described embodiment, 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. However, the third guide rail 13 and the fourth guide rail 14 may be arranged opposite to each other in the width direction of the hoistway 1. In this case, the third guide rail 13 is arranged closer to the second guide rail 12 than the fourth guide rail 14. In addition, in this case, the second guide rail 12 is arranged 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 beside the car in the depth direction of the hoistway 1.

[0081] In addition, in the above-described embodiment, the first gauge placement step S3 is performed after the second gauge installation step S2. However, the first gauge placement step S3 may be performed after the first gauge installation step S1 and before the second gauge installation step S2.

[0082] In addition, in the above-described embodiment, the second gauge installation process S2 is performed after the first gauge installation process S1. However, the second gauge installation process S2 may also be performed before the first gauge installation process S1.

[0083] As described above, the structure shown in the above embodiment represents an example of the content of the present disclosure. The embodiments can be combined with other known technologies. Within the scope not departing from the gist of the present disclosure, a part of the structure of the embodiment can be omitted or changed.

Claims

1. A guide rail centering device for an elevator, comprising: A first gauge, which is installed on a first guide rail and a second guide rail arranged oppositely to each other, and is arranged at a position based on a pair of centering lines arranged along the vertical direction, so as to be used for centering the first guide rail and the second guide rail respectively; A second gauge, which is installed on the third guide rail among a third guide rail and a fourth guide rail arranged oppositely to each other, and is independently installed on the second guide rail from the first gauge, so as to be used for positioning the third guide rail relative to the second guide rail; And A third gauge, which is installed on the fourth guide rail and is installed on the second gauge, so as to be used for positioning the fourth guide rail relative to the third guide rail.

2. The guide rail centering device for an elevator according to claim 1, wherein The second gauge has: a second guide rail holding part for holding the second guide rail; and a third guide rail holding part for holding the third guide rail, The third guide rail holding part is fixed to the second guide rail holding part.

3. The guide rail centering device for an elevator according to claim 1 or 2, wherein The third gauge has: a fourth guide rail holding part for holding the fourth guide rail; and a plurality of connecting parts for connecting the fourth guide rail holding part and the second gauge.

4. A guide rail centering method for an elevator, comprising: A first gauge installation step of installing a first gauge on a first guide rail and a second guide rail arranged oppositely to each other; A first gauge arrangement step of, after the first gauge installation step, arranging the first gauge 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 second gauge installation step of installing a second gauge on the third guide rail among a third guide rail and a fourth guide rail arranged oppositely to each other, and independently installing the second gauge on the second guide rail from the first gauge, thereby positioning the third guide rail relative to the second guide rail; And A third gauge installation step of, after the first gauge arrangement step and the second gauge installation step, installing a third gauge on the fourth guide rail and installing the third gauge on the second gauge, thereby positioning the fourth guide rail relative to the third guide rail.

5. The guide rail centering method for an elevator according to claim 4, wherein The first gauge arrangement step is implemented after the second gauge installation step.

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