JP4518765B2 - Stair installation structure - Google Patents

Description

  The present invention relates to a staircase mounting structure in which unitized staircases or staircases that can be assembled on-site are incorporated into a construction or structure such as a building.

  Each part of the staircase is manufactured at the factory in advance for the purpose of reducing costs, shortening the construction period, improving the product accuracy, etc., and assembled in a building or structure such as a building after being assembled at a place other than the factory or the like, or Assembling each part of the staircase in the building etc. while assembling on site.

  A conventional staircase mounting structure will be described with reference to FIGS.

  In the figure, 1 is a prefabricated mainly steel staircase, 2 and 3 are buildings such as buildings such as the second floor and the floor.

  The spar 1 of the staircase 1 has a lower end mounting portion 5 bent in the horizontal direction at the lower end portion and an upper end mounting portion 6 bent in the vertical direction at the upper end portion. The extension of the part 5 and the upper end mounting part 6 is orthogonal to each other.

  When assembling the staircase 1, the staircase 1 is assembled at a factory or the like and carried to the site. A staircase is installed at the installation location, and the position of the upper end mounting portion 6 and the position of the lower end mounting portion 5 are adjusted so that the tread plate 7 is horizontal. When the adjustment is completed, the upper end mounting portion 6 is moved to the second floor. 2 is fixed to the vertical surface 2a with a bolt 14 or the like, and the lower end mounting portion 5 is fixed to the floor 3 with a bolt or the like (not shown).

  In the conventional staircase mounting structure described above, the position must be adjusted while supporting the heavy staircase 1, and the workability is poor and the burden on the operator is large.

  In addition, although there exists a thing shown by patent document 1 about a staircase attachment structure, the specific procedure etc. which attach a staircase are not disclosed.

Japanese Patent Laid-Open No. 11-6264

  In view of such circumstances, the present invention improves the workability when mounting stairs and reduces the burden on the operator.

  According to the present invention, a mounting aid is provided at a required position of the housing so that the upper end of the spar can be engaged with the mounting stool, and the upper end of the spar is engaged with the mounting aid when the stairs are attached. , It is related to the mounting structure of the staircase where the upper end of the spar is temporarily supported, and the upper end of the spar is temporarily supported with respect to the frame, and the position adjustment between the upper end of the spar and the frame is adjusted in the temporary support state. In addition, the mounting aid forms a groove that opens upward, and the upper end of the spar can be dropped into the groove, and the spar is placed at the bottom of the groove. This relates to a staircase mounting structure provided with position adjusting means for adjusting the vertical position of the upper end of the stairs.

  According to the present invention, the mounting aid is provided at a required position of the housing, the upper end portion of the sheathing girder can be engaged with the mounting aid, and the upper end portion of the sheathing girder is engaged with the mounting aid when the stairs are attached. In addition, since the upper end of the spar can be temporarily supported, the burden of the operator supporting the weight of the stairs during the installation work is greatly reduced, and workability such as positioning work is improved.

  Further, according to the present invention, the upper end of the spar can be temporarily supported with respect to the housing, and the position between the top end of the spar and the housing can be adjusted in the temporarily supported state. An opening groove is formed, and the upper end of the spar can be lowered into the groove, and a position adjusting means for adjusting the vertical position of the upper end of the spar is provided at the bottom of the groove. In addition, an excellent effect of improving workability such as position adjustment work at the time of stair mounting is exhibited.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  1 that are the same as those shown in FIG. 8 are given the same reference numerals, and descriptions thereof are omitted.

  In the present invention, the attachment assisting tool 8 is attached to a position where the staircase 1 is to be attached, particularly a position where the upper end attachment portion 6 is attached. The upper end mounting portion 6 is fixed to the vertical surface 2 a of the second floor 2 via the mounting aid 8, and the lower end mounting portion 5 is further fixed to the floor 3. A mounting hole 10 through which the bolt 14 passes is formed in the upper end mounting portion 6, and the mounting hole 10 is a long hole that is long in the vertical direction.

  The mounting aid 8 will be described with reference to FIGS.

  The overall shape of the mounting aid 8 is bent so that a concave groove 9 is formed at the lower end, and the concave groove 9 is slightly expanded in a tapered shape. At least one (two in the drawing) adjusting screw 11 as a position adjusting means is threaded vertically into the bottom 9a of the concave groove 9. The fixing portion 12 that comes into contact with the vertical surface 2a of the second floor 2 of the mounting aid 8 is provided with a required shape, for example, a vertically long escape hole 13 as shown in the drawing. The escape hole 13 prevents the bolt 14 and the fixing portion 12 from interfering when the upper end mounting portion 6 is fixed to the second floor 2 with the bolt 14 (see FIG. 1).

  The procedure for attaching the staircase 1 will be described with reference to FIG. In the following explanation, each part of the staircase is assembled in advance at the factory, and the unitized staircase is brought into the field.

  First, the mounting aid 8 is mounted with countersunk screws 15 on the left and right of the portion of the vertical surface 2a to which the upper end mounting portion 6 is fixed. At this time, the bottom portion 9a is set so as to be slightly lowered with respect to the lower end of the upper end mounting portion 6 at the fixed position (see FIG. 4A).

  The upper end mounting portion 6 is dropped into the concave groove 9 so that the upper end mounting portion 6 and the mounting aid 8 are engaged. The upper ends of the left and right cage girders 4 are hooked on the mounting aid 8, and the upper ends of the rib girders 4 are temporarily supported. In a temporarily supported state, the lower end of the spar 4 is roughly positioned (see FIG. 4B).

  The adjusting screw 11 is screwed into the bottom portion 9a. The adjustment screw 11 may be screwed in advance. By turning the adjusting screw 11, the vertical position of the upper end mounting portion 6 is adjusted. The vertical position of the upper end mounting portion 6 is adjusted so that the tread plate 7 is horizontal, and the upper end mounting portion 6 is fixed to the vertical surface 2a by the bolts 14 in a state where the tread plate 7 is adjusted horizontally (see FIG. 4 (C)). When the upper end mounting portion 6 is fixed after being completely positioned, the mounting hole 10 may not be a long hole.

  When the upper end mounting portion 6 is fixed, the lower end mounting portion 5 is fixed to the floor 3 and the mounting of the staircase 1 is completed.

  Thus, since the weight of the staircase 1 is supported by the mounting aid 8 and the position of the upper end of the staircase 1 can be adjusted by the adjusting screw 11, the burden on the operator is greatly reduced and the workability is improved. Is significantly improved.

  In addition, although the position adjustment of the upper end of the balance beam 4 is performed with the adjustment screw 11, the adjustment screw 11 may be omitted and the position adjustment may be performed by inserting a spacer as appropriate into the bottom portion 9a.

  Further, the escape hole 13 of the mounting aid 8 is shaped so that the upper end is open, and the flat head screw 15 is exposed in a state where the upper end mounting portion 6 is fixed, and the upper end mounting portion 6 is temporarily fixed. (In this case, the lower end mounting portion 5 is fixed first), and by removing the countersunk screw 15, the mounting aid 8 can be pulled out downward, with the mounting aid 8 removed, The upper end attachment portion 6 can be fixed.

  In addition, each stair part can be brought into the site and attached to a building or the like while being assembled on site. That is, first, the mounting aid 8 is used to mount and position the right and left cage girders 4, and then the treads 7 and the like are sequentially incorporated into the girders 4 to complete the stairs 1.

  5 and 6 show a second embodiment.

  When the stairs 1 are installed along the wall surface 16 of the building, the first embodiment can be applied, but the second embodiment can also be applied as follows.

  When the staircase 1 is installed along the wall surface 16 of the building, an engagement hole 17 is formed in the upper part of the spar 4 on the side in contact with the wall surface 16. The mounting aid 8 is fixed to a portion of the wall surface 16 corresponding to the engagement hole 17.

  When attaching the staircase 1, first, the upper end portion of the spar 4 is hooked on the mounting aid 8 via the engagement hole 17, and the upper portion of the staircase 1 is hooked on the wall surface via the mounting aid 8. 16 is supported. Next, the upper end attaching portion 6 and the lower end attaching portion 5 are positioned at predetermined positions, and are fixed to the vertical surface 2a and the floor 3 by bolts 14, respectively. In this case, if the engagement hole 17 is greatly drilled, the adjustment screw 11 can be provided on the attachment auxiliary tool 8, and the adjustment screw 11 can be used to adjust the position of the upper end of the spar 4. Even when the adjustment screw 11 is not provided, the weight of the staircase 1 is supported by the attachment assisting tool 8, so that the burden on the operator is greatly reduced.

  FIG. 7 shows another mounting aid 18. The mounting aid 18 is formed by bending a plate material into a crank shape so that a bottom portion 9a is formed, a lower portion forms a fixing portion 12, and an upper portion forms a concave groove 9 between the vertical surface 2a. Form.

  Even when the attachment aid 18 is attached to the vertical surface 2a, first, the upper end attachment portion 6 of the spar 4 is dropped into the concave groove 9, and the upper end of the staircase 1 is temporarily supported by the attachment aid 18. Subsequent attachment procedures are the same as those in the first embodiment.

  When the mounting aid 18 is used, the upper end mounting portion 6 is directly attached to the vertical surface 2a, and the mounting aid 18 can be removed after the staircase 1 is installed.

  The mounting aid may be a pin erected on the housing side, and the spar 4 may be provided with a long elongated hole at the top and bottom where the pin is fitted.

  In addition, in FIG. 1 and the like, two mounting aids having a short width are provided at the positions where the upper end mounting portions of the right and left spar girders are mounted, and the position adjustment and mounting of the stairs are performed. Alternatively, it may be a single mounting aid having a long width across the upper end mounting portions of the right and left spar girders. In that case, the position adjusting means is the position of the upper spar mounting portion of the spar girder where adjustment is required. It should be provided corresponding to

  Needless to say, the present invention is not limited to stairs inside a building, but can also be applied to, for example, emergency stairs installed outdoors.

It is a perspective view which shows embodiment of this invention. It is a perspective view of the attachment auxiliary tool used for this embodiment. It is a side view of this attachment auxiliary tool. (A) (B) (C) is explanatory drawing which shows the attachment procedure of the staircase in this invention. It is a perspective view which shows other embodiment of this invention. It is A arrow directional view of FIG. It is a perspective view which shows another attachment auxiliary tool. It is a perspective view which shows a prior art example. It is explanatory drawing which shows the attachment procedure of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stairs 2 Second floor 2a Vertical surface 3 Floor 4 Sasara girder 6 Upper end attaching part 7 Treading board 8 Mounting aid 9 Groove 11 Adjusting screw

Claims (5)

  A mounting aid having a groove formed at a required position of the housing is provided, the groove is opened upward, a position adjusting means is provided at the bottom, and the spar is placed at the upper end by dropping into the groove. Engaging the tool, engaging the upper end of the weir girder and the attachment auxiliary tool when mounting the staircase, temporarily supporting the upper end of the weir girder, and the position adjusting means and the upper end of the weir girder and the A structure for mounting a staircase, characterized in that the vertical position of the upper end portion of the girder can be adjusted by adjusting the distance from the bottom of the groove.   2. The staircase mounting structure according to claim 1, wherein the position adjusting means is a position adjusting screw threaded vertically into at least one bottom of the groove.   The staircase attachment structure according to claim 1, wherein the position adjusting means is a spacer inserted into the bottom of the groove.   The staircase attachment structure according to claim 1, wherein the groove is opened in a tapered shape.   The staircase attachment structure according to claim 1, wherein a long relief hole is formed vertically in the attachment aid so that a bolt for fixing the upper end attachment portion to the housing does not interfere.

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