JP2017095222A - Method for assembling footboard of passenger conveyor and passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for assembling a foot board of a passenger conveyor by which deformation of a travel surface of a footboard rail, on which a footboard travels, can be suppressed and foot board assembly work efficiency can be enhanced.SOLUTION: According to this method, a footboard 9 is assembled by a step at which a connection member 9 is fitted into a connection part between adjacent rail members 9a, 9a, special bolts 17a, 17b are penetrated through a rail side face and the connection member so that flange parts 18a, 18b of the special bolts are positioned inside the rail side face, and a step at which the special bolts are fastened by nuts 25a, 25b, the flange parts are pressure-bonded to a rail lower surface, a rail upper surface and a rail side face respectively while pressing and deforming the rail lower surface and the rail upper surface by the flange parts, thereby fixing adjacent rail members to the connection member.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a method for assembling a passenger conveyor such as an escalator or a moving sidewalk, and a tread board rail on which a tread of the passenger conveyor travels.

  Passenger conveyors such as escalators and moving walkways are installed in building structures, and a plurality of treads run on tread rails installed in the main frame of the passenger conveyor. The treadle rail includes an outward rail that guides the treadle on which the passenger rides and a return rail that sends the treadle after the passenger gets on. These rails are cut by a length predetermined by the length of the main frame, and in one passenger conveyor, a plurality of rail members are arranged along the traveling direction of the treads, and adjacent rail members are connected to each other. This completes one forward or return rail. As a structure for connecting adjacent rail members, for example, Patent Document 1 is known.

  In this Patent Document 1, “a mounting bracket is temporarily fastened to a tread rail with a second-type fastener and arranged at a position corresponding to the intermediate material of the main frame, and the mounting portion of the temporarily tightened mounting bracket is placed on the intermediate material surface. The mounting part is fastened to the intermediate member by the first type fasteners, and the treadle rail is formally fastened by the second type fasteners at a predetermined position with respect to the mounting bracket, and the treadle rail is predetermined to the main frame. The “install in position” configuration is described (see summary). According to the configuration of Patent Document 1, the tread rail can be easily attached to the main frame at a predetermined position.

Japanese Patent Laid-Open No. 2005-53660

  However, in Patent Document 1, since the treadle rail is fastened and fixed to the mounting bracket with a fastener, the running surface of the treadle rail (the surface on which the treadle roller runs) is deformed by the fastener, and the running of the treadle is smooth. There is a problem that is not. In addition, if the treadle rail is deformed and a step is generated in the treadle rail connecting portion, it takes time to adjust the treadle rail and there is a problem that the treadle rail assembly work efficiency is lowered.

  The present invention has been made in view of the above-described actual situation, and an object of the present invention is to provide a passenger conveyor that can suppress the deformation of the running surface of the treadle rail on which the treadle runs and has high assembly work efficiency of the treadle rail. To provide a tread rail assembly method and a passenger conveyor.

  In order to achieve the above object, a representative present invention is a method for assembling a footboard rail of a passenger conveyor including a footboard and a footboard rail on which the footboard travels, wherein the footboard rail is in the traveling direction of the footboard. Each rail member is formed of a structure having a rail lower surface, a rail side surface, and a rail upper surface, which is a running surface of the tread, and the adjacent rail members are The tread rail is assembled by fixing the rail member to the connection member using a special bolt and nut after connecting through the connection member, the connection member including the rail lower surface, the rail side surface, and The special bolt has a U-shaped cross section that abuts on the top surface of the rail, and the special bolt has a threaded portion that is fastened to the nut on one end side, and a flange portion that is integrally provided on the other end side. The shaft portion has a shape capable of simultaneously contacting the rail lower surface and the rail upper surface according to the rotational position of the shaft portion, and the connection member is connected to the adjacent rail member. And the step of passing the special bolt through the rail side surface and the connecting member so that the flange portion of the special bolt is positioned inside the rail side surface, and tightening the special bolt with the nut The adjacent rail members are connected to each other by press-contacting the lower surface of the rail, the upper surface of the rail, and the side surface of the rail while pressing and deforming the lower surface of the rail and the upper surface of the rail with the flange. The step plate rail is assembled by a step of fixing to a member.

  ADVANTAGE OF THE INVENTION According to this invention, the deformation | transformation of the running surface of the tread rail which a tread runs can be suppressed, and also the efficiency of the assembly operation of a tread rail can be improved. Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is a side view of the escalator which is one Example of this invention. It is AA sectional drawing of FIG. It is a perspective view which shows the connection part of a return path rail. It is sectional drawing which looked at the connection part of the return path rail and bracket shown in FIG. 3 from C direction. It is a figure which shows the dimensional relationship of the return path rail and bracket shown in FIG. It is the side view which looked at the return rail and bracket shown in FIG. 4 from the X direction. It is YY sectional drawing of FIG. It is a perspective view which shows the connection part of the return rail which concerns on 2nd Example.

  An embodiment of a passenger conveyor and a method for assembling a tread rail according to the present invention will be described with reference to the drawings. FIG. 1 is a side view of an escalator according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA of FIG.

  The escalator (passenger conveyor) 1 is installed so as to straddle the upper floor 2 and the lower floor 3 of the building structure. In the main body frame 4 straddling the upper floor 2 and the lower floor 3 up and down, a plurality of step plates 5 connected endlessly circulates and moves in an obliquely upward direction or an obliquely downward direction across the upper floor and the lower floor. . The treads 5 connected endlessly travel on travel rails (7, 8, 9, 10, 11, 12) attached to the body frame 4.

  The traveling rails are arranged on the left and right sides of the main body frame 4, and the forward rails 7 and 8 that guide the forward sides of the plurality of treads 5, and the return rails (treader rails) 9, 10, and 11 that guide the return sides of the plurality of treads 5. , 12. The plurality of treads 5 circulate and move on the forward rails 7 and 8 and the return rails 9, 10, 11, and 12, and passengers are transported by the treads 5 that move on the outward side. The tread board 5 after transporting the passenger is sent to the return path side by a sprocket 6 installed at one end of the main body frame 4.

  Next, the structure of the connecting portion of the return rails 9, 10, 11, and 12 will be described. In addition, since the structure of the connection part of the return path rails 9, 10, 11, and 12 is common, the following description will be given by taking the return path rail 9 as an example. FIG. 3 is a perspective view showing a connecting portion of the return rail 9, and FIG. 4 is a sectional view of the connecting portion of the return rail 9 and the bracket 19 shown in FIG. 5 is a diagram showing the dimensional relationship between the return rail 9 and the bracket 19 shown in FIG. 4, FIG. 6 is a side view of the return rail 9 and the bracket 19 shown in FIG. 4 viewed from the X direction, and FIG. It is YY sectional drawing.

  As shown in FIG. 3, the return rail 9 has rail members 9a, b,... Arranged in a line along the traveling direction (longitudinal direction) of the tread 5, and the connecting portion (end portion) of the adjacent rail members 9a, 9b. ) Are fixed by brackets (connection members) 19. More specifically, the return rail 9 is fixed by a fastener to a rail support unit 15 fixed to the main body frame 4, and two rail members (hereinafter referred to as rails) 9 a and 9 b that are in contact with each other are connected to the rail support unit 15. It is connected in a state of floating in the air at a position away from the fixed part. A plurality of rails 9a, 9b cut to a predetermined length according to the length of the main body frame 4 are continuously arranged in the longitudinal direction, and ends of the rails are fixed to each other by a bracket 19. Thus, one return rail 9 is obtained.

  The shape of the rails 9a and 9b will be described in detail with reference to FIG. 5. The rails 9a and 9b are rail lower surfaces S1, rail side surfaces S2, and rails that serve as running surfaces of the rollers 14a and 14b (see FIG. 2) of the tread plate 5. It has a guide side surface S4 located on the inner side of the side surface S2 and a rail upper surface S3, has an L shape as a whole, and is partitioned by the rail side surface S2, the rail upper surface S3, and the guide side surface S4. It is a hollow structure in which the space SP is formed. S1 'is a surface formed in the space SP of the rail lower surface S1. Here, the rails 9a and 9b are formed into a shape shown in FIG. 5 by bending a plate material having a plate thickness t2. And the head 21a, 21b of the special bolt 17a, 17b mentioned later is accommodated in space SP.

  Further, a slit 30 is formed linearly along the longitudinal direction on the rail side surface S2 of the rails 9a and 9b, and a bolt hole 31 is provided at a position corresponding to the slit 30 on a bracket side surface S12 of the bracket 19 described later. ing. The width of the slit 30 and the diameter of the bolt hole 31 are both slightly larger than the diameters of the shaft portions 23a and 23b of the special bolts 17a and 17b.

  The bracket 19 has a bracket lower surface S11 that contacts the rail lower surface S1, a bracket side surface S12 that contacts the rail side surface S2, and a bracket upper surface S13 that contacts the rail upper surface S3. More specifically, a plate material having a thickness t1 is bent into a U shape and formed into the shape shown in FIG. Note that the plate thickness t2 of the rails 9a and 9b is smaller than the plate thickness t1 of the bracket 19 (t1> t2).

  And as shown in FIG. 6, the two bolt holes 31 are provided in bracket side surface S12. One bolt hole 31 is for connecting the rail 9a, and the other bolt hole 31 is for connecting the rail 9b.

  Here, the height (opening dimension) L1 of the bracket 19 is manufactured with a minus tolerance, and the height (connection dimension) L2 of the rails 9a, 9b is manufactured with a plus tolerance. That is, in consideration of manufacturing tolerances, the actual dimensional relationship is L1 ≦ L2. Thereby, in a state where the bracket 19 is fitted into the rails 9a and 9b, rattling between the two is prevented. That is, the bracket 19 is positioned only by fitting the bracket 19 into the rails 9a and 9b.

  Further, the bending radius R1 when the bracket 19 is bent and the bending radius R2 of the rails 9a and 9b added to the rail thickness t2 are substantially matched. Thereby, when the bracket 19 is fitted into the rails 9a and 9b, the close contact between the two bent portions is increased, and the gap between the members can be eliminated. The bracket 19 only needs to have a substantially U-shaped cross section by the bracket lower surface S11, the bracket side surface S12, and the bracket upper surface S13. It doesn't have to be. For example, a cutout may be provided on a part of the surface, and unevenness may be provided on a part of the surface.

  Next, the structure of the special bolts 17a and 17b will be described with reference to FIGS. Since the special bolt 17a and the special bolt 17b have the same structure, the special bolt 17b will be described below, and the description of the special bolt 17a will be omitted. As shown in FIG. 4, the special bolt 17b has a shaft portion 23b in which a screw portion 22b to be fastened to a nut 25b is formed on one end side and a flange portion 18b is integrally provided on the other end side, and the shaft portion 23b. And a head portion 21b provided on the other end side. The special bolt 17b passes through the bolt hole 31 on the bracket side surface S12 and the slit 30 on the rail side surface S2 with the head portion 21b and the flange portion 18b positioned in the space SP of the rail 9b. That is, the special bolt 17b is inserted in a direction orthogonal to the rail side surface S2 and the bracket side surface S12, as shown in FIGS.

  The shape of the flange portion 18b will be described in detail with reference to FIG. 7. The flange portion 18b has a longer side longer than a height L2 ′ excluding the rail thickness t2 from the height from the rail lower surface S1 ′ to the rail upper surface S3. The short side is shorter than the height L2 ′, and is a substantially parallelogram-shaped plate. Therefore, the collar portion 18b does not contact the rail lower surface S1 ′ and the rail upper surface S3 at a position where the long side of the collar portion 18b faces in the horizontal direction, but at a position where the long side of the collar portion 18b faces the vertical direction, Since the long side of the portion 18b is longer than the height L2 ′, the lower portion and the upper portion of the flange portion 18b come into contact with the rail lower surface S1 ′ and the rail upper surface S3, respectively. That is, depending on the rotational position of the shaft portion 23b of the special bolt 17b, there are cases where the flange portion 18b is in contact with the rail lower surface S1 'and the rail upper surface S3 and when it is not. The flange portion 18b is joined to the shaft portion 23b of the special bolt 17b by welding or the like. Therefore, when the special bolt 17b rotates, it rotates integrally with the rotation.

  Next, a method for assembling the return rail 9 will be described. With the long sides of the flanges 18a, 18b of the special bolts 17a, 17b facing in the horizontal direction, the heads 21a of the special bolts 17a, 17b from the openings (end surfaces in the longitudinal direction) of the spaces SP of the rails 9a, 9b. , 21b are accommodated in the space SP, and the special bolts 17a, 17b are mounted in advance in the space SP of the rails 9a, 9b so that the screw portions 22a, 22b move in the slit 30.

  Then, the bracket 19 is fitted into the connecting portion between the rail 9a and the rail 9b from the outside. At this time, the screw portions 22 a and 22 b of the special bolts 17 a and 17 b are protruded from the bolt holes 31 of the bracket 19.

  Thereafter, plain washers 27a and 27b and spring washers 26a and 26b are fitted into the screw portions 22a and 22b in this order, and finally the nuts 25a and 25b are fitted into the screw portions 22a and 22b, and the special bolts 17a and 17b are fitted into the nuts 25a and 25b. Tighten with. Among them, as shown in FIGS. 4 and 7, the long sides of the flange portions 18 a and 18 b are oriented in the vertical direction, but the nuts 25 a and 25 b are tightened until a predetermined tightening torque is reached.

  Then, since the long sides of the flange portions 18a and 18b are longer than L2 ', the corner portions 118a and 118b of the flange portions 18a and 18b press and deform the rail lower surface S1' and the rail upper surface S3 of the rails 9a and 9b. More specifically, the rail upper surface S3 is deformed in the direction of arrow D in FIG. 4, and the rail lower surface S1 'is deformed in the direction of arrow E in FIG. As a result, the vertical positions of the rails 9a, 9b and the bracket 19 are fixed. Here, since the rail lower surface S1 ′ is pressed by the corner portions 118a and 118b, the surface pressure of the corner portions 118a and 118b can be increased without increasing the tightening torque, and the rails 9a and 9b and the brackets can be increased. The fixing with 19 can be strengthened.

  Further, by tightening the special bolts 17a and 17b with the nuts 25a and 25b, the rail side surface S2 is deformed by the surface pressure of the flange portions 18a and 18b in the direction of arrow F in FIG. As a result, the left and right positions of the rails 9a and 9b and the bracket 19 are fixed.

  At this time, since the plate thickness t1 of the bracket 19 is thicker than the plate thickness t2 of the rail, the rails 9a and 9b are deformed by the flange portions 18a and 18b, but the bracket 19 is not deformed. Therefore, the rails 9a and 9b and the bracket 19 are securely fixed. In addition, the rail lower surface S1 on which the rollers 14a and 14b of the tread plate 5 travel is not pressed by the flange portions 18a and 18b (the rail lower surface S1 ′ is pressed by the special bolts 17a and 17b). S1 can prevent deformation. Therefore, the running of the tread board 5 is maintained well.

  As described above, in the present embodiment, the brackets 19 are fitted into the connecting portions of the rails 9a and 9b, and are tightened with the special bolts 17a and 17b and the nuts 25a and 25b. 9b is deformed in three directions (directions D, E, and F in FIG. 4) and the rails 9a and 9b and the bracket 19 are pressed against each other, so that the rails 9a and 9b can be securely fixed to the bracket 19. As a result, the assembling work of the return rail 9 is simplified and the working efficiency is improved.

  Further, since the rail lower surface S1 'deformed by the flange portions 18a and 18b is not a surface on which the roller of the tread plate 5 actually travels (in the space SP), there is no fear of deformation of the rail lower surface S1. Therefore, there is no step in the connecting portion between the rails 9a and 9b, and the running of the tread plate 5 is stabilized. In addition, since there is no need to adjust the level difference, the efficiency of assembling the return path rail 9 can be improved.

  Next, a second embodiment will be described. The second embodiment is characterized in that jack bolts (height adjustment mechanisms) 20a and 20b are provided to enable the height adjustment of the rail lower surface S1 with respect to the bracket 19 shown in the first embodiment. Hereinafter, this feature will be mainly described. FIG. 8 is a perspective view showing a connecting portion of the return rail 9 according to the second embodiment of the present invention. As shown in FIG. 8, jack bolts 20 a and 20 b are provided on the lower surface of the bracket 19. The front ends of the jack bolts 20a and 20b press the rail lower surfaces S1 of the rails 9a and 9b from below by tightening the jack bolts 20a and 20b. Thereby, the height of rail lower surface S1 can be adjusted.

  Specifically, after the bracket 19 is fitted into the connecting portion of the rails 9a and 9b, the rail lower surface S1 of the rail 9a and the rail lower surface of the rail 9b are inserted in the middle of or before and after the special bolts 17a and 17b are tightened with nuts. It is confirmed whether the height of S1 is the same, and the bolts 20a and 20b are tightened as necessary to adjust the height of the rail lower surface S1. Thereby, even if there is a step in the connecting portion between the rail 9a and the rail 9b for manufacturing reasons, a good running surface can be obtained by adjusting the step using the jack bolts 20a and 20b. Can be maintained. Further, even if a step is generated on the traveling surface of the return rail 9 due to the secular change after the escalator 1 is installed, the steps can be adjusted to eliminate the step using the jack bolts 20a and 20b.

  The embodiments of the present invention have been described above. However, the configurations described in the embodiments so far are only examples, and the present invention can be appropriately changed without departing from the technical idea. For example, the shape of the collar portions 18a and 18b is not limited to the parallelogram shape. For example, if a substantially rectangular plate-like body is employed instead of the parallelogram, there is an advantage that the processing of the collar portion is simplified.

1 Escalator (passenger conveyor)
5 Tread 9, 9, 11, 12 Return rail (tread rail)
9a, 9b Rail (rail member)
17a, 17b Special bolt 18a, 18b Butt 19 Bracket (connection member)
20a, 20b Jack bolt (height adjustment mechanism)
22a, 22b Screw part 23a, 23b Shaft part 118a, 118b Corner part of flange part S1, S1 'Rail lower surface S2 Rail side surface S3 Rail upper surface t1 Bracket thickness (connection member thickness)
t2 Rail thickness (Rail thickness)

Claims (6)

A method for assembling a treadle rail of a passenger conveyor comprising a treadle and a treadle rail on which the treadle travels,
The tread rail has a plurality of rail members arranged along the traveling direction of the tread, and each rail member has a rail lower surface, a rail side surface, and a rail upper surface, which are the traveling surfaces of the tread. Consist of body,
After connecting the adjacent rail members via connecting members, the treadle rails are assembled by fixing the rail members to the connecting members using special bolts and nuts,
The connection member has a U-shaped cross section that abuts on the rail lower surface, the rail side surface, and the rail upper surface,
The special bolt has a shaft portion in which a screw portion to be fastened with the nut is formed on one end side, and a flange portion is integrally provided on the other end side,
The flange portion has a shape capable of simultaneously contacting the rail lower surface and the rail upper surface according to the rotational position of the shaft portion,
The connection member is fitted to the connection portion of the adjacent rail member, and the special bolt is passed through the rail side surface and the connection member so that the flange portion of the special bolt is located inside the rail side surface. Steps,
By tightening the special bolt with the nut and pressing and deforming the rail lower surface and the rail upper surface with the flange, the flange is pressed against the rail lower surface, the rail upper surface, and the rail side surface, respectively. A stepping plate rail assembling method for a passenger conveyor, wherein the stepping rail is assembled by fixing the adjacent rail members to the connecting member. In claim 1,
The connection member is provided with a height adjustment mechanism for adjusting the height of the lower surface of the rail,
The method for assembling a footboard rail for a passenger conveyor, further comprising the step of adjusting the height of the lower surface of the rail by the height adjusting mechanism. In claim 1 or 2,
The board thickness of the said rail member is thinner than the board thickness of the said connection member, The tread board rail assembly method of a passenger conveyor characterized by the above-mentioned. In claim 1 or 2,
The flange portion is formed of a rectangular or parallelogram plate-like body whose long side is longer than the height from the rail lower surface to the rail upper surface, and whose short side is shorter than the height from the rail lower surface to the rail upper surface,
A method for assembling a footboard rail for a passenger conveyor, wherein corner portions of the flange portion formed of the plate-like body press and deform the lower surface of the rail and the upper surface of the rail. A passenger conveyor comprising a tread board and a tread board rail on which the tread board travels,
The tread rail has a plurality of rail members arranged along the traveling direction of the tread, and each rail member has a rail lower surface, a rail side surface, and a rail upper surface, which are the traveling surfaces of the tread. Consist of body,
A connecting member that fits into the connecting portion of the adjacent rail member; and
A special bolt and a nut for fixing the rail member to the connecting member;
Have
The connection member has a U-shaped cross section that abuts on the rail lower surface, the rail side surface, and the rail upper surface,
The special bolt has a shaft portion in which a screw portion to be fastened with the nut is formed on one end side, and a flange portion is integrally provided on the other end side,
The flange portion has a shape capable of simultaneously contacting the rail lower surface and the rail upper surface according to the rotational position of the shaft portion,
The passenger conveyor, wherein the rail lower surface, the rail upper surface, and the rail side surface are pressed against each other by the flange portion in a state where the rail member is fixed to the connection member by the special bolt and the nut. . In claim 5,
The passenger conveyor has a height adjusting mechanism for adjusting a height of the lower surface of the rail.