JP5461302B2 - Bracket fixing method - Google Patents

Description

  The present invention relates to a method for fixing a pair of brackets provided between truss support members of a pair of passenger conveyors in which entrances and exits are arranged side by side.

  Passenger conveyors convey occupants to their destinations by moving a transport section carrying the occupants, and include escalators and moving walkways. For example, as exemplified in Patent Document 1, an escalator includes a truss as a structure that supports the escalator's own weight and load, and various driving components and control components are incorporated in the truss. Usually, the truss is supported by the building structure through a truss support material in the vicinity of the entrance.

  Escalator entrances may be arranged side by side. For example, in a configuration in which a plurality of ascending escalators, a plurality of descending escalators, or an ascending escalator and a descending escalator are arranged side by side, the entrance / exit of the escalator is also arranged side by side. Alternatively, in a configuration in which one-way escalators related to ascending and descending are connected so as to be folded back for each floor, the upper entrance / exit of a relatively lower escalator and the lower entrance / exit of a relatively upper escalator are arranged side by side. It will be.

Japanese Patent Publication No.55-8435

  As described above, in the configuration in which the entrances are arranged side by side, the truss support material is also arranged side by side accordingly. By the way, in the vicinity of the truss support material, for example, a bracket that exerts a support action on the truss support material is arranged. For this reason, in the configuration in which the truss support members are arranged side by side, it becomes a problem how to provide a plurality of brackets in a limited space sandwiched between adjacent truss support members.

  The present invention has been made in view of the above, and relates to fixing a pair of brackets arranged between truss supports of passenger conveyors arranged side by side, and fixing the brackets with high strength in a limited space. It aims to provide a method.

  The present invention for achieving the above-described object is a method for fixing a pair of brackets provided between truss support members of a pair of passenger conveyors in which entrances are arranged side by side. The pair of brackets having different sizes are prepared, and the relatively large first bracket of the pair of brackets is placed on a support portion of a structure for providing a passenger conveyor, and the bottom wall of the first bracket A peripheral portion of the first portion is welded and fixed to the support portion, and a second smaller bracket of the pair of brackets is placed on the bottom wall portion of the first bracket, and the second bracket The peripheral edge of the bottom wall is fixed to the bottom wall of the first bracket by welding.

  ADVANTAGE OF THE INVENTION According to this invention, regarding the fixation of a pair of bracket arrange | positioned between the truss support materials of the passenger conveyor located in a line, high intensity | strength can be ensured in a limited space.

It is a side view of the escalator which applies embodiment of this invention. It is a detail part of the upper part entrance / exit vicinity of the II section of FIG. It is a perspective view which shows the upper boarding gate and lower boarding gate which were located in a line. It is a figure which shows the truss of the escalator connected so that it may be turned up for every floor from the side. FIG. 5 is a plan view of the vicinity of a pair of laterally arranged truss support members as viewed from the arrow V in FIG. 4. It is the front view seen from the arrow VI of FIG. It is a figure of the same aspect as FIG. 5 regarding a comparative example. It is a figure of the same aspect as FIG. 6 regarding a comparative example.

  Embodiments of a bracket fixing method according to the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

  The present embodiment is an aspect in which an escalator is targeted as an example of a passenger conveyor and a bracket for restricting movement of a truss support material is targeted as an example of a bracket. FIG. 1 is a side view of an escalator to which the present embodiment is applied.

  The escalator 1 includes a truss 3 along a longitudinal direction extending obliquely up and down, and the truss 3 is provided with a plurality of steps 5 connected endlessly as an occupant transport unit. The steps 5 are circulated and moved between the upper entrance / exit 7 and the lower entrance 9 by a driving force of a driving machine (not shown) usually provided in the truss.

  Railings 11 are erected on the left and right sides of the step 5. Each of the balustrades 11 extends along the longitudinal direction of the truss 3 and is supported on the top of the truss 3. Each balustrade 11 is provided with a moving handrail 13 that is moved in synchronization with the progress of the step 5. The moving handrail 13 is an endless belt-like member, and is provided so as to move around on the front and rear and upper and lower outer peripheries of the balustrade 11.

  FIG. 2 is a detailed part in the vicinity of the upper entrance / exit of part II in FIG. As shown in FIG. 2, the truss 3 is supported by a support portion 15 that is a beam of a structure provided with an escalator via a truss support member 13. If it demonstrates in detail, the truss support material 13 will have the 1st part 13a and the 2nd part 13b first. The truss support member 13 is fixed to the upper portion 3a of the truss 3 in the first portion 13a. The second portion 13b of the truss support member 13 extends toward the support portion 15 of the structure.

  As an example, a bearing plate 17 is fixed to the upper surface of the support portion 15 by a stud bolt 19. Further, one or more sheet-like liners 21 are fixed to the upper surface of the bearing plate 17. The truss support member 13 is supported on the support portion 15 so that the lower surface of the second portion 13 b is in contact with the upper surface of the liner 21. In addition, although detailed illustration is abbreviate | omitted, the support regarding the lower part 3b of the truss 3 in the lower entrance / exit 9 is also the same.

  In the structure provided with the escalator, the entrance / exit may be arranged side by side. In this embodiment, the modes illustrated in FIGS. 3 and 4 are taken up. That is, as shown in FIGS. 3 and 4, in a configuration in which one-way escalators related to ascending and descending are folded for each floor, the upper entrance 7 of the relatively lower escalator is relatively higher. The lower entrance 9 of the escalator in the side will be lined up side by side. In such a configuration, the truss support material 13 on the upper entrance 7 side and the truss support material 13 on the lower entrance 9 side are also arranged side by side. This embodiment is implemented as a method for fixing a pair of brackets described later between a pair of truss support members 13 arranged side by side.

  5 is a plan view of the vicinity of a pair of side-by-side truss support members as viewed from the arrow V in FIG. 4, and FIG. 6 is a front view as viewed from the arrow VI in FIG. In FIG. 6, priority is given to the clarity of the drawing, and the above-described liner is not shown. As shown in FIGS. 5 and 6, a first bracket 51 and a second bracket 52 are disposed between a pair of adjacent truss support members 13. In addition, a third bracket 53 is disposed on the side opposite to the side where the first bracket 51 and the second bracket 52 are provided in each truss support member 13.

  In the present embodiment, the brackets 51, 52, 53 are substantially L-shaped members as viewed from the side, and include bottom wall portions 51a, 52a, 53a, standing wall portions 51b, 52b, 53b, rib portions 51c, 52c, 53c. The bottom wall portions 51a, 52a, 53a extend along the bearing plate 17 on the structure side, and are fixed to the bearing plate 17. Further, the bottom wall portions 51a, 52a, and 53a are rectangular in plan view.

  The standing wall portions 51b, 52b, and 53b are vertically raised from one edge of the bottom wall portions 51a, 52a, and 53a. The rib portions 51c, 52c, and 53c extend perpendicular to both of the wall portions so as to straddle between the bottom wall portions 51a, 52a, and 53a and the standing wall portions 51b, 52b, and 53b.

  In the present embodiment, the brackets 51, 52, and 53 are movement restriction brackets that restrict movement of the truss 3 in a predetermined direction. In the illustrated example, a first bracket 51 and a third bracket 53 are disposed on both sides of the truss support member 13 on the side of the upper entrance 7 of the escalator that is relatively below. The second portion 13 b of the truss support member 13 is sandwiched between the standing wall portion 51 b of the first bracket 51 and the standing wall portion 53 b of the third bracket 53. The standing wall portion 51 b and the standing wall portion 53 b are in contact with or slightly separated from the side end surface of the second portion 13 b of the truss support member 13. Further, the lower entrance 9 side of the escalator which is adjacent to the upper side of the escalator is configured in the same manner, and the second portion 13b of the truss support member 13 includes the upright wall portion 52b of the second bracket 52 and the third bracket. It is sandwiched between 53 standing wall portions 53b. With such a configuration, each truss support member 13 is configured to restrict undesirable movement in a direction (X direction) perpendicular to a direction (Y direction) along the truss longitudinal direction in plan view, That is, the movement of the truss 3 itself joined to the truss support member 13 in the direction is restricted.

  In the present embodiment, the pair of brackets 51 and 52 provided between the pair of truss support members 13 have different bottom wall portions 51a and 52a. As illustrated, the bottom wall portion 51 a of the first bracket 51 is larger than the bottom wall portion 52 a of the second bracket 52 in plan view. Both the length L1 of the bottom wall portion 51a of the first bracket 51 and the length L2 of the bottom wall portion 52a of the second bracket 52 extend longer than half of the space D between the truss support members.

  The first bracket 51 is attached to the bearing plate 17, while the second bracket 52 is not directly attached to the bearing plate 17, but is placed on the first bracket 51 fixed to the bearing plate 17. Being fixed. In addition, due to this, the rib portion 51c of the first bracket 51 has the bottom wall of the first bracket 51 so that the bottom wall portion 52a of the second bracket 52 can be placed on the bottom wall portion 51a of the first bracket 51. It is deviated from the center (in the Y direction) of the portion 51a. On the other hand, the rib portion 52 c of the second bracket 52 is provided at the center (in the Y direction) of the bottom wall portion 52 a of the second bracket 52.

  Next, the procedure of the bracket fixing method according to the present embodiment will be described. First, as described above, a pair of brackets 51 and 52 having different sizes of the bottom wall portions 51a and 52a are prepared, and a relatively large first bracket 51 is provided with an escalator. It is placed on a bearing plate (support part) 17 of the object. 5 and 6, the peripheral edge of the bottom wall 51a of the first bracket 51 is welded and fixed to the bearing plate 17, that is, the present embodiment. Then, three sides excluding the standing wall portion 51b in the bottom wall portion 51a are welded. Next, the relatively small second bracket 52 is placed on the bottom wall portion 51 a of the first bracket 51. Similarly, as indicated by “x” or “Δ”, the peripheral edge portion of the bottom wall portion 52a of the second bracket 52 is welded and fixed to the bottom wall portion 51a of the first bracket 51, that is, the bottom wall portion. Three sides excluding the standing wall portion 52b in 52a are welded.

  According to the bracket fixing method according to the present embodiment as described above, as is clear from the comparison with the comparative example shown below, the pair of the truss support members arranged side by side are limited in a limited space. When fixing the bracket, a high fixing strength can be obtained. First, as in the comparative example shown in FIGS. 7 and 8, when a pair of brackets are provided between the pair of truss support members 13, the length L0 of the bottom wall portion 53a is half of the space D between the truss support members. A mode in which the shorter third bracket 53 is used and arranged symmetrically is a general natural idea.

  However, in such a comparative example, when each bracket is welded and fixed to the bearing plate 17, the welding of one side indicated by “◯” of each bottom wall portion 53 a causes the length L 0 of each bottom wall portion 53 a to reach the limit. As a result of making it long, it becomes butt welding of bottom wall parts 53a, and it has the problem that it is not easy to make welding workability and welding strength compatible. In addition, although welding of two sides indicated by “x” in each bottom wall portion 53a is general fillet welding and has good workability, the length L0 of the bottom wall portion 53a is the length of the truss support material. In other words, the weld length W0 cannot be more than half of the interval D, that is, the weld length W0 is also shorter than half of the interval D of the truss support member, and it is difficult to make the weld length sufficiently long.

  On the other hand, in the present embodiment, as shown in FIG. 5 and FIG. 6, first, in welding of one side indicated by “Δ” in each of the bottom wall portions 51 a and 52 a, the bottom wall portions 51 a and 52 a have the same height. Since it is not the aspect which contacts at a position, fillet welding can be performed instead of butt welding. In addition, in the welding of two sides indicated by “x” in each of the bottom wall portions 51a and 52a, the lengths L1 and L2 of the bottom wall portions 51a and 52a exceed half of the distance D between the truss support members, that is, The weld lengths W1 and W2 are also more than half of the space D between the truss support members, and the weld length can be made sufficiently long. For this reason, in the present embodiment, the welding of the peripheral edge portions of the bottom wall portions 51a and 52a can be unified by fillet welding and the welding length can be made sufficiently long. Regarding the fixing of the pair of brackets arranged between the materials, it is possible to ensure good workability in a limited space and also ensure high welding strength.

  Furthermore, in the present embodiment, the rib portion 51c of the first bracket 51 is provided so as to be offset from the center of the bottom wall portion 51a, so that a welding mode that achieves both the above-described welding workability and welding strength is achieved. The strength of the first bracket 51 on which the second bracket 52 is placed can be more easily secured against a strong force that changes the angle between the bottom wall portion 51a and the standing wall portion 51b. ing.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  Although the bracket of the said embodiment was a bracket for movement control of a truss, this invention is not limited to this. Therefore, as an example, the bracket can be fixed to be secured to the truss support material for the complete fixing of the truss. Even in other cases, the present invention can be widely applied to the fixing of brackets that are provided between a pair of truss support members and that have some predetermined action on the corresponding entrance / exit side. it can.

  Further, the bracket to which the present invention is applied is not limited to one having a rib portion. Further, the form of the bracket to which the present invention is applied is not particularly limited as long as at least a bottom wall part to be welded and a standing wall part exhibiting a predetermined action are provided.

  Furthermore, the arrangement of the escalator to which the present invention is applied is not limited to the above-described embodiment, and can be widely applied to an aspect in which the entrances are arranged side by side. Therefore, for example, a configuration in which a plurality of up escalators are arranged side by side, a configuration in which a plurality of down escalators are arranged side by side, or a configuration in which an up escalator and a down escalator are arranged side by side etc. You can also Moreover, this invention is implemented regarding the passenger conveyor which conveys a passenger | crew to the target place by moving the conveyance part which mounted the passenger | crew, and is not limited to an escalator. Therefore, as another example, it is possible to implement a moving sidewalk.

  DESCRIPTION OF SYMBOLS 1 Escalator (passenger conveyor), 13 Truss support material, 15 Support part, 17 Bearing plate (support part), 51 1st bracket, 52 2nd bracket, 51a, 52a Bottom wall part, 51b, 52b Standing wall part, 51c, 52c Rib part.

Claims (5)

A method of fixing a pair of brackets provided between truss support members of a pair of passenger conveyors arranged side by side,
Prepare the pair of brackets having different bottom wall sizes,
The relatively large first bracket of the pair of brackets is placed on the support portion of the structure for providing the passenger conveyor,
Fixing the peripheral edge of the bottom wall of the first bracket to the support by welding;
On the bottom wall portion of the first bracket, a relatively smaller second bracket of the pair of brackets is placed,
A bracket fixing method of welding and fixing a peripheral edge portion of a bottom wall portion of the second bracket to a bottom wall portion of the first bracket. Each of the pair of brackets has the bottom wall portion and a standing wall portion rising from the bottom wall portion,
The bracket fixing method according to claim 1, wherein both the bottom wall portion of the first bracket and the bottom wall portion of the second bracket extend longer than half of the interval between the truss support members. Each of the pair of brackets includes the bottom wall portion, a standing wall portion rising from the bottom wall portion, and a rib portion straddling the bottom wall portion and the standing wall portion,
The rib portion of the first bracket is provided offset from the center of the bottom wall portion of the first bracket so that the bottom wall portion of the second bracket can be placed on the bottom wall portion of the first bracket. And
The bracket fixing method according to claim 1 or 2, wherein the rib portion of the second bracket is provided at the center of the bottom wall portion of the second bracket. Each of the pair of brackets has the bottom wall portion and a standing wall portion rising from the bottom wall portion,
The bracket according to any one of claims 1 to 3, wherein each of the pair of brackets is applied to a truss support member of a passenger conveyor to which the standing wall corresponds, and restricts movement of the truss of the corresponding passenger conveyor. Fixing method. Each of the bottom wall portions of the pair of brackets has a rectangular shape in plan view,
The bracket fixing method according to any one of claims 2 to 4, wherein three sides of the bottom wall portion excluding the standing wall portion are welded.

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