JP2006199434A - Escalator and its modernization method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an escalator modernization method capable of easily performing the installation work at site by using an existing truss of an existing escalator. <P>SOLUTION: The modernization method of an escalator 1 includes a disassembly step, and upper floor unit assembly step, and a lower floor assembly step. In the disassembly, an existing sprocket, an existing guide rail, an existing control unit, an existing driving device, and an existing step built in an upper floor side and a lower floor side of an existing truss 2 are taken away. In the upper floor unit assembly step, a newly installed upper floor part truss 31 with an upper floor side guide rail 32 and an upper floor side sprocket 33 to guide the step built therein is inserted in an upper floor side horizontal part 21 of the existing truss 2. In the lower floor unit assembly step, a newly installed lower floor part truss 41 with a lower floor side guide rail 42 and a lower floor side sprocket 43 to guide the step built therein is inserted in a lower floor side horizontal part 22 of the existing truss 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an escalator modernization method in which a part of an existing escalator is replaced with a new part, and an escalator made by this method.

  Replacing consumables with new ones of the same type may replace aging escalators that cannot be handled by routine maintenance. In this case, there are a method of replacing the foundation with the building and a method of replacing the inner part with a new one while leaving the foundation. In the former case, the construction period will be longer and the cost will be higher. On the other hand, in the latter case, it is expected that the construction period can be shortened by carrying out the dismantling and removal work of the existing escalator and the installation work of the new escalator.

  One of the methods that replaces existing escalators with new escalators is the renewal method. In the renewal method, all the internal parts are removed, leaving the existing truss, and a new one is installed there. In this case, each part is temporarily disassembled and then reassembled locally after a temporary assembly test run at the factory. The dismantling work and installation work on site vary depending on various installation conditions, but can be performed, for example, substantially in parallel. The main parts such as the newly installed drive unit are installed using the shaft center of the currently operating escalator drive unit as a reference, so that the disassembly work and the installation work can be performed in a relatively short period of time. Installed accurately.

  However, in the case of the above-described method, the procedure of dismantling work and installation work crosses each other, so that a jig adapted to the preliminary examination and the existing escalator is required each time. In addition, when the structure and dimensions of the existing escalator are not clearly understood, it is difficult to prepare a jig used in the field installation work. Therefore, not only an extra design such as providing a jig with a mechanism that can be finely adjusted on site, but extra work is required to use this on site.

  In particular, when existing escalators are from other companies, the arrangement and dimensions of the parts that do not exist vary little by little. Therefore, in order to install the internal parts of the newly established escalator using the truss of the existing escalator, a large number of spacers and supports are required at the joint portion, and it must be designed individually.

  In addition, the installation work at the site requires almost the same process as the assembly work performed for trial operation before shipment, and it is difficult to shorten the work period when the existing escalator is dismantled. Therefore, there is a need for a modernization method that renews an existing escalator while maximizing the use of existing escalator parts including the existing truss.

  Therefore, an object of the present invention is to provide an escalator modernization method that can easily perform local installation work using an existing truss of an existing escalator, and an escalator suitable for this method.

  The modernization method of an escalator according to the present invention is based on the premise that a new escalator is installed by diverting an existing truss of an existing escalator. This modernization method includes a dismantling process, an upper floor unit assembly process, and a lower floor unit assembly process. In the dismantling process, the existing sprocket, the existing guide rail, the existing control unit, the existing drive device, and the existing steps incorporated on the upper floor side or the lower floor side of the existing truss are removed. In the upper floor unit assembly process, a new upper floor truss incorporating the upper floor guide rail and the upper floor sprocket for guiding the steps is inserted into the upper floor horizontal section of the existing truss. In the lower floor unit assembly step, a new lower floor truss incorporating a lower floor guide rail and a lower floor sprocket for guiding the steps is inserted into the lower horizontal section of the existing truss.

  In order to shorten the construction period by diverting the parts of the existing escalator, the intermediate guide rail is left in the section of the inclined portion of the existing truss in the dismantling process. Then, the existing guide rail and the upper floor side guide rail are connected in the upper floor unit assembly step, and the existing guide rail and the lower floor side guide rail are connected in the lower floor unit assembly step.

  In order to make the upper floor unit assembly process and the lower floor unit assembly process smoother, an alignment mechanism is provided at the bottom of the newly installed upper floor truss and the newly installed lower floor truss, and this is used to newly install the existing truss. Adjust the horizontal position and vertical position of the floor truss and the newly installed lower floor truss.

  In addition, there is a cable laying step of laying an intermediate cable electrically connecting electronic devices respectively arranged in the newly installed upper floor unit and the newly installed lower floor unit on the inclined portion of the existing truss.

  In order to make it easier to carry the new escalator to the installation site, the new upper floor unit and the new lower floor unit are divided by a connecting part that can be divided into two in the width direction intersecting the moving direction of the steps. The other is assembled separately into the existing truss and then connected to each other. In this case, the shafts of the divided upper floor side sprocket and lower floor side sprocket are respectively positioned and fixed relative to the newly installed upper floor truss and the newly installed lower floor truss by the temporary support member from the factory. Shipped.

  The escalator according to the present invention includes an existing truss of an existing escalator, a new upper floor unit, and a new lower floor unit. The new upper floor unit has a structure in which an upper floor side guide rail and an upper floor side sprocket for guiding the steps are previously incorporated in the new upper floor truss, and is inserted into the upper floor horizontal portion of the existing truss. The new lower floor unit has a structure in which a lower floor side guide rail and a lower floor side sprocket for guiding the steps are preliminarily incorporated in the new lower floor truss, and is inserted into the lower horizontal section of the existing truss.

  Alignment mechanism that adjusts the horizontal position and vertical position of the newly installed upper floor truss and the newly installed lower floor truss on the lower surface of the existing upper floor truss and the newly installed lower floor truss to facilitate the positioning work of the newly installed upper floor unit and the newly installed lower floor unit Is provided.

  In addition, in order to shorten the work period by diverting the parts of the existing escalator, the intermediate guide rail at the inclined portion of the existing truss is left among the guide rails for guiding the steps. The upper floor side guide rails and the lower floor side guide rails are connected to each other via the intermediate portion guide rails.

  At least one of the newly installed upper floor unit and the newly installed lower floor unit includes a drive device and a control unit. The drive device circulates the steps from the upper floor side guide rail to the lower floor side guide rail. The control unit controls the operation of the drive device.

  Alternatively, the newly installed upper floor unit includes a drive device that rotates the upper floor side sprocket to circulate the steps, a control unit that controls the operation of the drive device, and an upper floor side connection cable that extends from the control unit, The new lower floor unit includes a lower floor side device electrically connected to the control unit, and a lower floor side connection cable extending from the lower floor side device. The upper floor side connection cable and the lower floor side connection cable are connected to the intermediate cable laid on the inclined portion of the existing truss by a connector.

  The newly installed upper floor unit and the newly installed lower floor unit include a connecting portion that can be divided into two in the width direction intersecting the moving direction of the steps. In addition, in order to cover the gap between the existing truss and the newly installed upper floor truss and the newly installed lower floor truss, a newly prepared elevating plate is sized to cover this gap or the newly installed upper floor truss A plate that covers only the gap is prepared separately from each lifting plate that covers the upper surface of the newly installed lower floor truss.

  According to the modernization method of the escalator according to the present invention, the newly installed upper floor truss incorporating the upper floor side guide rail and the upper floor side sprocket, and the newly installed lower floor including the lower floor side guide rail and the lower floor side sprocket. Since the truss is built into the existing truss, the number of parts that must be positioned in the field work is small. Therefore, the work at the site construction is reduced and the construction period can be shortened.

  Further, the escalator according to the present invention includes a new upper floor unit and a new lower floor unit in which inner parts to be inserted into the existing truss are respectively incorporated into a new upper floor truss and a new lower floor truss. Therefore, the centering and positioning work in the local construction is reduced, so that the construction period can be shortened.

  Furthermore, the internal parts of the newly installed escalator are installed on the existing truss in a state of being incorporated in the newly installed upper floor truss and the newly installed lower floor truss. Therefore, a dedicated jig for incorporating the internal parts of the newly installed escalator in accordance with the existing truss is not necessary, and the manufacturing cost can be reduced at a low cost.

  An escalator 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. The escalator 1 includes an existing truss 2, a new upper floor unit 3, and a new lower floor unit 4 shown in FIG. The existing truss 2 uses the existing escalator as it is. The existing truss 2 includes an upper floor side horizontal portion 21, a lower floor side horizontal portion 22, and an inclined portion 23.

  Most of the existing truss 2 is composed of a combination of an L-shaped steel 2a and a grooved steel 2b. In the existing truss 2, a truss structure is mainly applied to the side portion 23a of the inclined portion 23 where a vertical load is likely to be applied. The upper surface 21a of the upper floor side horizontal portion 21 and the upper surface 22a of the lower floor side horizontal portion 22 are provided so as to be flush with the floor surface A of each floor as shown in FIGS.

  Existing sprockets, existing guide rails, existing control units, existing drive units, existing steps, etc. provided on the upper and lower floors as internal parts of the existing escalator are dismantled and removed and provided on the inclined portion 23. Only the intermediate guide rail 5 of the existing escalator shown in FIG. 8 is left as it is. Moreover, in this embodiment, the part diverted as the intermediate part guide rail 5 is a part currently formed in a straight line.

  The new upper floor unit 3 and the new lower floor unit 4 are carried into the site in an assembled state at the factory. The new upper floor unit 3 includes an upper floor side guide rail 32, an upper floor side sprocket 33, a drive unit 34, a control unit 35, an alignment mechanism 36 shown in FIG. And the upper floor side connection cable 37 shown in FIG. 8 is provided. The newly installed lower floor unit 4 includes a newly installed lower floor truss 41 shown in FIGS. 1 and 3, a lower floor guide rail 42, a lower floor sprocket 43, and an alignment mechanism 46 similar to FIG. 5.

  The new upper floor truss 31 is slightly smaller than the inner dimension of the upper floor horizontal portion 21 of the existing truss 2 and is inserted with a gap with respect to the upper floor horizontal portion 21. . Similarly, the newly installed lower floor truss 41 is slightly smaller than the internal dimension of the lower floor horizontal part 22 of the existing truss 2 and has a gap with respect to the lower floor horizontal part 22. Inserted.

  The upper floor side guide rail 32 guides the step chain connecting the steps to the upper floor side sprocket 33. As shown in FIGS. 1 and 2, the upper floor side guide rail 32 extends from the newly installed upper floor truss 31 toward the inclined portion 23 so as to coincide with the upper floor side end portion 51 of the intermediate portion guide rail 5. It is gently curved. The upper floor side guide rail 32 is welded to the intermediate portion guide rail 5. The weld point is finished with a grinder.

  The upper floor sprocket 33 is fixed to a shaft 39 supported by a bearing 38 provided in the newly installed upper floor truss 31 and rotates integrally with the shaft 39. A drive sprocket 34b connected to the drive device 34 by a drive chain 34a is provided outside the upper floor side sprocket 33 in the width direction of the shaft 39. That is, in the present embodiment, the upper floor side sprocket 33 is the drive side.

  The driving device 34 is controlled by the control unit 35 in terms of driving speed and driving direction. In addition to the operation button and emergency stop button exposed to the outside of the escalator 1, the control unit 35 includes various devices such as a skirt guard panel safety device, a step chain cut detection device, and a drive chain cut detection device arranged in the middle of the inclined portion 23. A safety device is also connected. The upper floor side connection cable 37 extends from the control unit 35 in order to connect to electronic devices including these safety devices.

  The lower floor side guide rail 42 guides the step chain to the lower floor side sprocket 43. As shown in FIGS. 1 and 3, the lower floor side guide rail 42 extends from the newly installed lower floor truss 41 toward the inclined portion 23 so as to coincide with the lower floor side end portion 52 of the intermediate portion guide rail 5. It is gently curved. The lower floor side guide rail 42 is welded to the intermediate portion guide rail. The weld point is finished with a grinder.

  If the upper floor guide rail 32 and the intermediate guide rail 5 and the lower floor guide rail 42 and the intermediate guide rail 5 are too far apart to be welded directly, Weld with a pad. In addition, in order to absorb the distortion by expansion | swelling or shrinkage | contraction by a temperature change, you may fasten with a volt | bolt. In this case, the connecting portion is provided with an oblique seam that does not cross the moving direction of the step at a right angle.

  The lower floor side sprocket 43 is attached to a shaft 49 supported by a bearing 48 provided on the newly installed lower floor truss 41, and a step chain is strung over it. Between the new lower floor truss 41 and the bearing 48, a slide rail 44a and a tensioner 44b are provided to keep the tension of the step chain constant. In the present embodiment, the upper floor side sprocket 33 and the lower floor side sprocket 43 are illustrated in a disk shape with teeth omitted.

  In addition, the new lower floor unit 4 is provided with a safety device connected to the control unit 35 of the new upper floor unit 3 and a part of a control unit that is more convenient to be provided on the lower floor side as the lower floor device 45. . A lower floor side connection cable 47 extends from the lower floor side device 45. As shown in FIG. 8, the lower floor side connection cable 47 is connected to the upper floor side connection cable 37 and the connector 7 through an intermediate cable 57 separately laid on the inclined portion 23. As a result, the lower floor side device 45 is electrically connected to the control unit 35. Since it is connected using the connector 7, the wiring work of various electronic devices is simple.

  As shown in FIG. 4, the alignment mechanism 36 is provided at each of four corners of the bottom 31 a of the newly installed upper floor truss 31, and finely adjusts the horizontal position and the vertical position with respect to the inner surface of the existing truss 2. It has a function. The alignment mechanism 46 provided in the newly installed lower floor truss 41 also has the same function, and here, the position of F5 in the newly installed upper floor truss 31 will be described as a representative.

  As shown in FIG. 5, the alignment mechanism 36 provided at the corner includes jack bolts 61a, 61b, 61c for adjusting the position in the vertical direction and the two horizontal directions, and a new upper floor truss 31 for the building. It is comprised with the anchor 64 for installing and fixing. Through holes 62 a, 62 b, 62 c are provided directly in the members of the new upper floor truss 31, and nuts 63 a, 63 b, 63 c are welded from the inside of the new upper floor truss 31. The jack bolts 61 a, 61 b, 61 c are screwed into the through holes 62 a, 62 b, 62 c and protrude outward from the newly installed upper floor truss 31. Instead of welding the nuts 63a, 63b, 63c, the through holes 62a, 62b, 62c may be screw holes. The tips of the jack bolts 61a, 61b, 61c are in contact with a part of the existing truss 2.

  The anchor 64 includes an anchor bolt 64a and an anchor plate 64b. The anchor bolt 64a is directly driven into the building in this embodiment. The anchor bolt 64a may be a bolt that is fixed to the existing truss 2 because the anchor floor truss 31 may be fixed to the building. The anchor plate 64b is provided with a fastening hole 64c that is long in the direction of movement of the step as shown in FIG. 5, and is fixed to the newly installed upper floor truss 31 with a bolt 64d as shown in FIG.

  The anchor plate 64b has a long fixing hole 64e in a direction orthogonal to the direction in which the fastening hole 64c extends. Anchor bolts 64a are passed through the fixing holes 64e and fixed. When the anchor plate 64b is provided so as to extend over two corners of the newly installed upper floor truss 31, the anchor plate 64b can be engaged with the newly installed upper floor truss 31 without being fastened by the bolt 64d as shown in FIG. Is done. The displacement in the horizontal plane that occurs between the anchor bolt 64a and the newly installed upper floor truss 31 due to the adjustment by the jack bolts 61b and 61c is achieved by arranging the fastening hole 64c and the fixing hole 64e in a direction orthogonal to each other. Has been absorbed.

  In the width direction orthogonal to the moving direction of the steps, the alignment mechanism 46 indicated by F5 and the alignment mechanism 46 on the opposite side are formed in a mirror image relationship with each other. In addition, the alignment mechanism 46 disposed closer to the inclined portion 23 in the step moving direction does not have a jack bolt protruding in the step moving direction.

  The new upper floor unit 3 and the new lower floor unit 4 have a connecting portion that can be divided into two in the width direction intersecting the moving direction of the steps in consideration of the size and weight that can be carried into the site. The new upper floor unit 3 will be described as an example. As shown in FIG. 9, the connecting portions 31b, 31c, 31d, 32a, and 39a are provided on the new upper floor truss 31, the upper floor side guide rail 32, and the shaft 39. ing. The divided new upper floor trusses 31 and the upper floor side guide rails 32 are joined together via a connecting plate 71, and the shaft 39 is joined by a flange 39b.

  As for the newly installed lower floor unit 4, the way of providing the connecting portion is the same as that of the newly installed upper floor unit, and thus the description thereof is omitted here. Further, in the newly installed upper floor truss 31 and the newly installed lower floor truss 41 that are divided into two, the shafts 39 and 49 and other unstable components are provided with support brackets or reinforced with jigs or the like. It is preferable.

  Next, the modernization method of the escalator 1 will be described. The modernization method is, for example, a method that can be used for the existing truss 2 of the existing escalator and others, and in this embodiment, the intermediate guide rail 5 is left, and the other part is replaced with a new one. The modernization method of this embodiment has a dismantling process, an upper floor unit assembly process, and a lower floor unit assembly process.

  In the dismantling process, the existing sprockets, existing guide rails, existing control units, existing drive units, and existing steps on the upper and lower floors of the existing escalator are removed. In the upper floor unit assembly process, the new upper floor unit 3 configured as described above is inserted into the existing truss 2. In this case, depending on the construction conditions at the site, the new upper floor unit 3 divided into two as shown in FIG. 9 may be carried into the existing truss 2 one by one. Moreover, after combining the newly installed upper floor unit 3 carried into the field one by one, it may be installed on the existing truss 2.

  In the upper floor unit assembly process, the newly installed upper floor truss 31 is provided with an alignment mechanism so that the upper floor side end 51 of the intermediate guide rail 5 left in the dismantling process and the upper floor side guide rail 32 coincide with each other. The horizontal position and the vertical position are finely adjusted by 36 jack bolts 61 a, 61 b, 61 c, and fixed by an anchor 64. The combined upper floor side guide rail 32 and the upper floor side end 51 of the intermediate portion guide rail 5 are welded together.

  In the lower floor unit assembly process, the newly installed lower floor unit 4 configured as described above is inserted into the existing truss 2. In this case, similarly to the case of the newly installed upper floor unit 3 according to the situation of the installation site of the escalator 1, the newly installed lower floor unit 4 may be divided into two parts, and one of them may be inserted into the existing truss 2 one by one. It may be installed after being combined with each other.

  When the new upper floor unit 3 and the new lower floor unit 4 are assembled and the upper floor side guide rail 32, the lower floor side guide rail 42, and the intermediate portion guide rail 5 are connected to each other as shown in FIG. The connected steps are mounted, and the drive chain 34a is hung on the drive device 34 and the drive sprocket 34b.

  In addition, after the dismantling process, the cable laying process is performed before the steps are assembled. The upper floor side connection cable 37 and the lower floor side connection cable 47 are connected to the intermediate cable 57 laid at this time via the connector 7 after the upper floor unit assembly process and the lower floor unit assembly process, respectively. The

  Thus, the modernization method in this embodiment does not perform the dismantling process in parallel with other processes. Also, the upper floor unit assembly process and the lower floor unit assembly process are to insert the newly installed upper floor unit 3 and the new lower floor unit 4 into the existing truss 2, respectively, and install them in parallel with each other. Can do. Therefore, this modernization method has good work efficiency at the installation site and shortens the construction period. In addition, since it does not take time to disassemble the product after it is temporarily assembled at the factory, the work period until shipment at the factory is shortened. In addition, it does not require work that requires advanced skills, such as positioning of each sprocket and drive system, and center alignment, so the construction unit cost can be reduced.

The disassembled perspective view which shows the truss of the escalator of one Embodiment concerning this invention, an upper floor unit, and a lower floor unit. The side view of the upper floor unit shown in FIG. The side view of the lower floor unit shown in FIG. Sectional drawing which shows the lower part of a newly installed upper floor truss along F4-F4 in FIG. The perspective view of the alignment mechanism shown along F5 arrow in FIG. Sectional drawing of the alignment mechanism shown along F6-F6 in FIG. Sectional drawing of the alignment mechanism shown along F7-F7 in FIG. The side view which shows typically the escalator which concerns on this invention. The disassembled perspective view which divided the upper floor unit shown in FIG. 1 into the width direction.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Escalator, 2 ... Existing truss, 3 ... New upper floor unit, 4 ... New lower floor unit, 5 ... Middle guide rail, 7 ... Connector, 21 ... Upper floor side horizontal part, 22 ... Lower floor side horizontal part, DESCRIPTION OF SYMBOLS 23 ... Inclined part, 31 ... New upper floor truss, 31b, 31c, 31d, 32a, 39a ... Connection part, 32 ... Upper floor side guide rail, 33 ... Upper floor side sprocket, 34 ... Drive apparatus, 35 ... Control part 36, 46 ... Alignment mechanism, 37 ... Upper floor side connection cable, 39 ... Shaft, 39b ... Flange (connection part), 41 ... New lower floor truss, 42 ... Lower floor side guide rail, 43 ... Lower floor side sprocket 45 ... Lower floor side equipment, 47 ... Lower floor side connection cable, 49 ... Shaft, 57 ... Middle cable, 71 ... Connection plate (connection part).

Claims (12)

An existing truss of an existing escalator;
A new upper floor unit in which the upper floor side guide rail and the upper floor side sprocket for guiding the steps are incorporated in the new upper floor truss in advance and inserted into the upper floor horizontal portion of the existing truss;
A lower floor side guide rail for guiding a step and a lower floor side sprocket are provided in advance in a newly installed lower floor truss, and are provided in a newly installed lower floor unit that is inserted into the lower floor horizontal portion of the existing truss. Escalator.   2. The escalator according to claim 1, wherein the newly installed upper floor truss and the newly installed lower floor truss are provided with an alignment mechanism at the bottom for adjusting a horizontal position and a vertical position with respect to the existing truss. The inclined portion of the existing truss has an intermediate guide rail of the existing escalator that guides the steps,
The escalator according to claim 1, wherein the upper floor side guide rail and the lower floor side guide rail are connected in series through the intermediate portion guide rail. At least one of the new upper floor unit and the new lower floor unit is:
A driving device for circulating a step between the upper floor side guide rail and the lower floor side guide rail;
The escalator according to claim 1, further comprising a control unit that controls an operation of the drive device. The new upper floor unit includes a drive device that rotates the upper floor side sprocket to circulate the steps, a control unit that controls the operation of the drive device, and an upper floor side connection cable that extends from the control unit,
The newly installed lower floor unit includes a lower floor side device electrically connected to the control unit, and a lower floor side connection cable extending from the lower floor side device,
The escalator according to claim 1, wherein the upper floor side connection cable and the lower floor side connection cable are connected to an intermediate cable laid on an inclined portion of the existing truss by a connector.   2. The escalator according to claim 1, wherein the newly installed upper floor unit and the newly installed lower floor unit include a connecting portion that can be divided into two in the width direction intersecting with the moving direction of the steps. In the modernization method of escalators where new escalators are installed by diverting the existing truss of the existing escalator,
Dismantling process of removing the existing sprocket, the existing guide rail, the existing control unit, the existing drive device, the existing step, which are incorporated on the upper floor side or the lower floor side of the existing truss;
An upper floor unit assembling step of inserting a new upper floor truss incorporating the upper floor guide rail and the upper floor side sprocket for guiding the steps into the upper floor horizontal portion of the existing truss;
A lower floor unit assembling step of inserting a new lower floor truss incorporating a lower floor guide rail and a lower floor sprocket for guiding the steps into the lower horizontal section of the existing truss. Escalator modernization method. In the dismantling process, the intermediate guide rail is left in the section of the inclined portion of the existing truss,
In the upper floor unit assembly step, the intermediate guide rail and the upper floor guide rail are connected,
The modernization method for an escalator according to claim 7, wherein the intermediate part guide rail and the lower floor side guide rail are connected in the lower floor unit assembly step. In the upper floor unit assembly step, the newly installed upper floor truss is adjusted in the horizontal position and the vertical position with respect to the existing truss by the alignment mechanism provided at the bottom,
8. The horizontal position and the vertical position of the newly installed lower floor truss are adjusted with respect to the existing truss by an alignment mechanism provided at the bottom in the lower floor unit assembly step. The modernization method of the described escalator.   The cable laying step of laying an intermediate cable for electrically connecting electronic devices respectively arranged in the newly installed upper floor unit and the newly installed lower floor unit on the inclined portion of the existing truss. The modernization method of the escalator described in 7.   The newly installed upper floor unit and the newly installed lower floor unit are divided by a connecting portion that can be divided into two in the width direction intersecting the moving direction of the steps, and one of the divided and the other is separately incorporated into the existing truss The modernization method for escalators according to claim 7, wherein the escalators are connected to each other afterward. In the upper floor unit assembly process, the new upper floor unit is divided into two in the width direction where the new upper floor truss, the shaft of the upper floor side sprocket, and the upper floor side guide rail intersect the moving direction of the steps. Inserted into the existing truss
In the lower floor unit assembly process, the newly installed lower floor unit is divided into two in the width direction where the newly installed lower floor truss, the shaft of the lower floor side sprocket, and the lower floor side guide rail intersect the moving direction of the steps. The modernization method for escalators according to claim 7, wherein the modernization method is inserted into the existing truss in a state where the

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