JP2008297704A - Brace serving also as handrail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brace serving also as a handrail capable of preventing swing of a horizontal handrail rod and a diagonal member and preventing a hook of a locking fitting from coming off an engaging hole in a flange. <P>SOLUTION: This brace serving also as the handrail is constituted by pivoting one end parts of a pair of diagonal members 5, 5 crossing in an X shape on both end parts of the horizontal handrail rod 4, attaching the locking fittings 6 locking in the flange 2 with the engaging hole 3 on upper part sides of both of support columns 1, 1 to each of the one end parts of both of diagonal members 5, 5, and attaching connection fittings 7 connected with the flange 2 with the engaging hole 3 on a lower part side of the support column 1 to the other end parts of each diagonal member 5. Flange abutting parts 19, 20 abutting on an outer peripheral face part 2a of the flange 2 at a use position to prevent swing of the horizontal handrail rod 4 and the diagonal members 5 are provided in an end part 5a of the horizontal handrail rod 4 on which the one end parts 5a of each diagonal member 5 are pivoted and/or the one end parts 5a of each diagonal member 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a handrail and streak used for assembling a single pipe scaffold that is assembled by spanning a scaffold plate between adjacent columns in a construction work site.

  As this kind of conventional handrail combined streaks, there is one described in Patent Document 1 below. For example, the difference between the handrail-use streaks is that one end of each pair of diagonal members crossing in an X-shape is pivotally attached to both ends of a horizontal handrail rod disposed horizontally between columns adjacent in the longitudinal direction of the scaffolding plate. In addition, a locking hook that locks to the flange provided on the upper side of each column is fixed to one end of each diagonal member, and the lower portion of each column is fixed to the other end of each diagonal member. The locking member which locks with respect to the flange provided in the side is pivotally attached.

Thus, when assembling the single tube scaffold, the struts adjacent in the width direction of the scaffolding plate are connected by the horizontal stay, and the horizontal handrail rods with different handrails are arranged between the struts adjacent in the longitudinal direction of the scaffolding plate, By locking the locking hooks at one end of each diagonal member to the upper side flanges of both struts, and by locking the locking hooks at the other end of both diagonal materials to the lower side flanges of both columns, respectively, By connecting both struts adjacent to each other in the longitudinal direction of the scaffolding board, the scaffolding board is spanned between the lateral stays facing in the longitudinal direction of the scaffolding board, and this is extended upward and planarly to assemble a single pipe scaffolding. Yes.
JP 2006-169919 A

  In the above-mentioned handrail combination, the hooks of the locking fittings attached to the respective one ends of both diagonal members are inserted into the rectangular engagement holes of the flanges provided on the upper sides of the both columns. However, since the hook is movable in the longitudinal direction in the engagement hole of the flange, the horizontal handrail and the diagonal are easily shaken, and there is a risk that the locking bracket may come off from the flange. Met.

  In view of the above-mentioned problems, the present invention provides a handrail and streak that can prevent horizontal balustrades and slanting materials from shaking and prevent the hooks of the locking fittings from coming out of the engagement holes of the flanges. Objective.

  Means for solving the above problems will be described with reference numerals of the embodiments described later. The invention according to claim 1 is a pair of diagonal members 5 intersecting both ends of the horizontal handrail rod 4 in an X shape. , 5 is pivotally attached to one end of each of the slant members 5 and 5, and one end of each of the diagonal members 5, 5 is engaged with a flange 2 with an engagement hole 3 on the upper side of each column 1, 1. The connecting member 7 is connected to the flange 2 with the engagement hole 3 on the lower side of the support column 1 at the other end of each diagonal member 5. The horizontal balustrade 4 and the diagonal member 5 sway in contact with the outer peripheral surface 2a of the flange 2 at the use position at the end of the horizontal balustrade 4 and the end portion 5a of each diagonal member 5 pivotally attached to the portion 5a. It is characterized by providing flange contact portions 19 and 20 for preventing the above.

  According to the second aspect of the present invention, in the handrail combined use according to the first aspect, the locking metal fitting 6 is attached to one end portion of each of the diagonal members 5 and 5, and one end portion of the one diagonal member 5 is attached to the horizontal handrail rod 4. It pivots at a position shifted to one side from the axis G of the horizontal balustrade 4 with respect to one end, and one end of the other diagonal member 5 is connected to the other end of the horizontal balustrade 4 By being pivotally mounted in a position shifted from the shaft G to the other side, both diagonal members 5 and 5 can be folded in parallel on both sides of the horizontal handrail 4.

  According to a third aspect of the present invention, in the handrail combined use according to the first aspect, the fixing metal fittings 6 and 6 are attached to one end portions of the two diagonal members 5 and 5, and one end portions of the two diagonal members 5 and 5 are horizontally disposed. By pivotally attaching to each end of the handrail rod 4 at a position shifted downward from the axis G of the horizontal handrail rod 4, both diagonal members 5, 5 are placed in a parallel state below the horizontal handrail rod 4. It can be folded.

  The effect of the invention by the above-described solution means will be described with reference numerals in the embodiments described later. According to the handrail and streaks of the invention according to claim 1, one end portion 5a of each diagonal member 5 is pivotally attached. The end of the horizontal handrail 4 and / or one end 5a of each diagonal member 5 are in contact with the outer peripheral surface 2a of the flange 2 of the column 1 at the use position where the handrails are used differently. Since the flange contact portions 19 and 20 for preventing shaking are provided, if the horizontal handrail 4 or the diagonal member 5 tries to swing due to wind pressure or the like, the flange contact portion 19 on the end side of the horizontal handrail 4 and / or The flange contact portion 20 of the one end portion 5a of each diagonal member 5 comes into contact with the outer peripheral surface portion 2a of the flange 2, so that the horizontal handrail 4 and the diagonal member 5 are prevented from shaking, and the locking bracket 6 is connected to the flange 2. There is no fear of coming off.

  According to the second aspect of the present invention, the locking metal fittings 6 and 6 attached to the respective one ends of the diagonal members 5 and 5 are connected to the axial center G of the horizontal balustrade 4 in plan view at both ends of the horizontal balustrade 4. On the other hand, in the case of the handrail-combination muscle A provided in a state of being swung in the opposite directions, the two diagonal members 5, 5 can be folded in parallel on both sides of the horizontal handrail rod 4.

  According to the invention of claim 3, the locking metal fittings 6, 6 attached to the respective one end portions of the both diagonal members 5, 5 are connected to the axial center G of the horizontal handrail rod 4 in plan view at both ends of the horizontal handrail rod 4. In the case of the handrail combined streaks B provided concentrically with each other, the diagonal members 5 and 5 can be folded in parallel with each other below the horizontal handrail rod 4.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 (a) is a front view of a handrail and streak A according to the present invention, and FIG. 2 (b) is a plan view thereof. (A) is an enlarged view of the main part of (a) of FIG. 1, (b) is a plan view thereof, and (a) of FIG. 3 is a partially enlarged view of (a) of FIG. ) Is a plan view thereof. As shown in FIGS. 1 to 3, the column 1 used for assembling the single pipe scaffold is made of a steel pipe, and flanges 2 are fixed to the column 1 at predetermined intervals in the vertical direction. The substantially rectangular engagement holes 3 that are long in the radial direction of the flange 2 are formed with 40 openings at intervals of 90 degrees in the circumferential direction. This handrail combined streak A is formed by pivoting one end of each of the pair of diagonal members 5 and 5 crossing in an X shape at the both ends of the horizontal handrail rod 4 and one end of each of the diagonal members 5 and 5. At the other end of each diagonal member 5, a locking metal fitting 6 is attached to the flange 2 with the engaging hole 3 on the upper side of each of the columns 1, 1 erected on both sides. The connecting metal fitting 7 connected to the flange 2 with the engagement hole 3 on the lower side is attached.

  In addition, the handrail-use streak A is obtained by attaching the locking metal fittings 6 and 6 attached to one end portions of the two diagonal members 5 and 5 to the axis G of the horizontal handrail rod 4 in plan view at both ends of the horizontal handrail rod 4. The one diagonal member 5 is provided with a horizontal handrail as shown in FIGS. 1 (b) and 2 (b). The other end of the diagonal member 5 is pivotally attached to the other end of the horizontal balustrade 4 while being pivotally attached to the one end of the balustrade 4 at a position shifted to one side from the axis G of the horizontal balustrade 4. The horizontal balustrade 4 is pivotally mounted in a position shifted from the axis G to the other side, so that the diagonal members 5 and 5 can be folded in parallel with both sides of the horizontal balustrade 4. Yes.

  Then, the end of the horizontal balustrade 4 that is pivotally attached to one end of each diagonal member 5 and the one end of each diagonal member 5 are connected to the outer peripheral surface portion 2a of the flange 2 of the column 1 at the use position of the handrail and misalignment A. Flange contact portions 19 and 20 are provided for contacting and preventing the horizontal handrail 4 and the diagonal member 5 from shaking.

  If it demonstrates in detail about the structure of the above-mentioned handrail combination streak A, as will be understood from FIG. 2, at one end portion of the horizontal handrail rod 4, a plate piece 8a orthogonal to the longitudinal direction of the handrail rod and a plate piece 8b parallel thereto. A plate piece 8a of the L-shaped mounting piece 8 in plan view is fixed by welding so that the plate piece 8b is located one side away from the axis G of the horizontal handrail 4 and the horizontal handrail 4 At the other end, a plate piece 8a of the same L-shaped mounting piece 8 in the plan view has the plate piece 8b on the other side from the axis G of the horizontal handrail 4, that is, on the side opposite to the one end portion side of the diagonal member 5. It is fixed by welding so that it is located away.

  The locking metal fitting 6 attached to one end of each diagonal member 5 includes a flat mounting plate 15 attached to one end portion of the diagonal member 5 by welding, and attached to the distal end portion of the mounting plate 15 by welding. 14 includes a hook 16 engaged with the engagement hole 3, and one end portion 5 a of each diagonal member 5 and a mounting plate 15 of the locking metal fitting 6 welded thereto are connected to each end portion of the horizontal handrail 4. Are attached to the plate piece 8b of the mounting piece 8 by means of bolts 17 and nuts 18 respectively, whereby one end portion 5a of one diagonal member 5 is connected to one end portion of the horizontal handrail rod 4 by a horizontal handrail rod. 4 is pivotally mounted at a position shifted to one side from the shaft core G, and one end portion 5a of the other diagonal member 5 is opposite to the other end portion of the horizontal handrail rod 4 from the axis G of the horizontal handrail rod 4. It is pivotally attached at a position shifted to the direction (see FIG. 2 (b)).

  Further, at each end of the horizontal handrail rod 4, the outer peripheral surface portion of the flange 2 of the support column 1 at the use position of the handrail and miscellaneous misalignment A at the tip of the plate piece 8 b of the L-shaped attachment piece 8 attached to the end portion. A flange abutting portion 19 is formed to abut against 2a to prevent the horizontal balustrade 4 and the diagonal member 5 from shaking, and the flange 2 is also provided at one end portion 5a of each diagonal member 5 at the use position of the handrail and miscellaneous streaks A. A flange abutting portion 20 is formed which abuts against the outer peripheral surface portion 2a to prevent the horizontal handrail 4 and the diagonal member 5 from shaking. In this embodiment, the flange contact portion 19 is formed on the end portion side of the horizontal handrail 4 and the flange contact portion 20 is formed on one end portion 5a of each diagonal member 5. Only the flange contact portion 19 on the end portion side or only the flange contact portion 20 on the one end portion 5a side of each diagonal member 5 may be used.

  The flange contact portion 19 formed at each end of the horizontal handrail 4 is composed of a parallel surface portion facing in parallel with the outer peripheral surface portion 2a of the flange 2, and is in surface contact with the flange outer peripheral surface portion 2a. Because of the contact, it is possible to accurately prevent the palm rail 4 and the diagonal member 5 from shaking. That is, as can be seen from FIGS. 2 and 3, the flange contact portion 19 is formed at the front end of a substantially hexagonal plate piece 8 b of the L-shaped mounting piece 8, and the front end surface thereof is a transverse section of the horizontal handrail 4. Which is parallel to the flange outer peripheral surface portion 2a.

  As shown in FIG. 1 (a), the connecting bracket 7 attached to the other end portion of each diagonal member 5 has an attachment piece 22 attached to the inner end face of the connection shoe 21 with an engagement hole having a U-shape in side view. In a state of being pivotally attached to the other end portion of the material 5, the U-shaped connecting shoe 21 is fitted into the flange 2 of the column 1, and the engagement hole 3 of the flange 2 and the upper piece 21 a of the U-shaped connecting shoe 21 are provided. It has a well-known structure in which a wedge 23 is inserted over a joint hole (not shown) and an engagement hole (not shown) provided in the lower piece 21b.

  As shown in FIG. 1A, the wedge 23 of the connecting metal 7 is formed in a wedge shape having a wider front-rear width on the upper side than that on the lower side, and has an engagement hole 3 and a connection shoe of the flange 2 on the left-right width. 21 is made of a metal piece formed in a rectangular shape having a cross section slightly smaller than the left and right width of the engagement hole. A circular retaining protrusion 23a is formed on one side of the lower end portion, and the retaining protrusion 23a The wedge 23 can be inserted into and removed from the engagement hole 3 of the flange 2 and the engagement hole in the lower piece 21b of the connection shoe 21, and the wedge 23 can be pulled out upward from the engagement hole in the upper piece 21a of the connection shoe 21. Thus, it is held so as to be movable up and down without detaching from the connecting shoe 21. The engaging hole of the lower piece 21b of the connecting shoe 21 is wider than the left and right width of the engaging hole in the upper piece 21a, and the lower end of the wedge 23 formed with the retaining protrusion 23a is inserted. The engaging hole 3 of the flange 2 can also be inserted through the lower end of the wedge 23.

  The attachment method of the handrail / muscle difference A constructed as described above will be described. In using the handrail / muscle difference A, adjacent struts 1 and 1 are connected by a lateral stay (not shown), and the lateral stay is connected. A scaffold board (not shown) is placed between them. As shown in FIG. 1 (b) and FIG. 2 (b), this diagonal handrail combination A is folded in such a way that both diagonal members 5, 5 are juxtaposed on both sides of the horizontal handrail rod 4. .

  On the scaffolding board spanned as described above, the operator lifts one diagonal member 5 and holds one locking bracket 6 from the state in which the two diagonal members 5 with handrails and streaks A in the folded state are held. After the hook 16 is locked in the engagement hole 3 of the upper flange 2 of one column 1, the other diagonal member 5 is lifted, and the hook 16 of the other locking bracket 6 corresponds to the other column 1. The horizontal handrail 4 is locked between the upper end portions of the both side columns 1, 1 by engaging with the engagement hole 3 of the upper flange 2, and then the lower end portions (free end portions) of the two diagonal members 5, 5. ) Are connected to the lower flanges 2 and 2 of the columns 1 and 1, respectively, by the connecting bracket 7, and the diagonal members 5 and 5 are arranged in an X shape as shown in FIG. As a result, both struts 1 and 1 are connected to each other.

  According to the handrail combination A which is installed as described above, the flange of the column 1 is attached to the end portion side of the horizontal handrail rod 4 and the one end portion 5a of each diagonal member 5 at the use position of the handrail combination reinforcement. 2 is provided with flange contact portions 19 and 20 that contact the outer peripheral surface portion 2a to prevent the horizontal handrail 4 and the diagonal member 5 from shaking, so that the horizontal handrail 4 and the diagonal member 5 are likely to swing due to wind pressure or the like. Then, since the flange contact portion 19 on the end side of the horizontal handrail 4 and the flange contact portion 20 of the one end portion 5a of each diagonal member 5 are in contact with the outer peripheral surface portion 2a of the flange 2, the horizontal handrail 4 Further, the swinging of the diagonal member 5 is prevented, and there is no possibility that the locking fitting 6 is detached from the flange 2.

  In the embodiment described with reference to FIG. 1 to FIG. 3, the handrail-combination A is different in that the locking brackets 6, 6 attached to the one end portions of the two diagonal members 5, 5 are seen in plan view at both end portions of the horizontal handrail rod 4. It is a case where it is provided in a state in which it is swung (shifted) to the opposite sides with respect to the axis G of the horizontal handrail rod 4, and one end portion of one diagonal member 5 is horizontal with respect to one end portion of the horizontal handrail rod 4. It pivots at a position shifted to one side from the axis G of the handrail 4, and the other end of the other diagonal member 5 is connected to the other end of the horizontal handrail 4 from the axis G of the horizontal handrail 4. The two diagonal members 5, 5 can be folded in parallel on both sides of the horizontal balustrade 4 by being pivotally mounted in a position shifted to the other side. Are the same as the axis G of the horizontal balustrade 4 in plan view at both ends of the horizontal balustrade 4. Shows a handrail combined unreasonable B when provided Jo.

  4 (a) is a front view of the handrail and streak B, (b) is a plan view thereof, FIG. 5 (a) is an enlarged view of the main part of FIG. 4 (a), and FIG. 6 (a) is a partially enlarged view of FIG. 5 (a), and FIG. 6 (b) is a plan view thereof. With reference to these drawings, the structure of the handrail and streaks B will be described in more detail. Both ends of the horizontal handrail rod 4 are U-shaped in a plan view and substantially Z-shaped in a side view ((a of FIGS. 5 and 6). )) Is fixed, and this bracket 9 is composed of a pair of substantially Z-shaped side plate portions 9a, 9a and a connecting plate portion 9b connecting the upper side portions of both side plate portions 9a, 9a. A plate portion 9b is attached to each end surface of the horizontal handrail rod 4, and the lower end of each side plate portion 9a, 9a is attached to the outer peripheral surface portion 2a of the flange 2 of the column 1 at the use position of the handrail and streak B. A flange abutting portion 19 for preventing the horizontal handrail 4 and the diagonal member 5 from shaking is provided.

  On the other hand, locking metal fittings 6 are attached to one end portions 5a and 5a of both diagonal members 5 and 5, respectively, and each locking metal fitting 6 comprises a substantially C-shaped hook member 11 having a hook 10 formed at the tip. 5 (a) and FIG. 6 (a), one end of each of the diagonal members 5 and 5 has both side plates of the bracket 9 attached to each end of the horizontal handrail 4. 9a and 9a are pivotally attached by bolts 17 and nuts 18 at positions shifted downward from the axis G of the horizontal handrail 4 so that both diagonal members 5 and 5 are below the horizontal handrail 4 Can be folded in parallel.

  On the outer peripheral surface portion 2a of the flange 2 with which the flange contact portion 19 provided on the side plate portion 9a of the bracket 9 abuts, an engagement recess 24 with which the flange contact portion 19 abuts and engages is formed (FIG. (Refer to 6 (a) and (b)).

  In addition, each of the connecting brackets 7 of the handrail and miscellaneous line B has a connecting shoe 21 with an engagement hole having a substantially U-shaped side view fixed to the other end portion of the diagonal member 5 via a horizontal mounting piece 25 of the column 1. A U-shaped connecting shoe 21 is fitted into the flange 2 in the flange 2 of the support column 1, and the engaging hole 3 of the flange 2, the engaging hole (not shown) provided in the upper piece 21a of the U-shaped connecting shoe 21, and the lower piece 21b. 1 and has a well-known structure in which a wedge 23 is inserted over an engagement hole (not shown) provided in FIG. 1, and is almost the same as the connecting bracket 7 of the handrail and staggered bar A shown in FIG. Moreover, since the attachment method of this handrail / muscle difference B is also the same as that of the above-mentioned handrail / muscle difference A, the description thereof will be omitted.

(a) is a front view of the handrail combination A of the present invention, and (b) is a plan view thereof. (a) is the principal part enlarged view of (a) of FIG. 1, (b) is the top view. (a) is a partially enlarged view of (a) of FIG. 2, and (b) is a plan view thereof. (a) is a front view of the handrail combination streak B of the present invention, and (b) is a plan view thereof. (a) is an enlarged view of the main part of (a) of FIG. 4, and (b) is a plan view thereof. (a) is a partially enlarged view of (a) of FIG. 5, and (b) is a plan view thereof.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Flange with engagement hole 3 Engagement hole 4 Flange horizontal rail 5 Diagonal material 6 Locking bracket 7 Connecting bracket 19, 20 Flange contact part

Claims (3)

  One end of each pair of diagonal members intersecting in X-shape is pivoted to both ends of the horizontal balustrade, and one end of each diagonal member is engaged with the flange with the engagement hole on the upper side of each column. A locking bracket is attached to each other, and the other end of each diagonal member is a handrail combined with a connecting bracket connected to a flange with an engagement hole on the lower side of the column, and one end portion of each diagonal member At the end of the horizontal balustrade that is pivotally attached, and / or at one end of each diagonal member, a flange abutting portion that abuts the outer peripheral surface of the flange at the use position to prevent the horizontal balustrade and the diagonal member from shaking is provided. The handrail combined use muscle difference.   A locking bracket is attached to one end of each diagonal member, and one end of one diagonal member is pivotally attached to one end portion of the horizontal handrail at a position shifted from the axis of the horizontal handrail to one side. The other diagonal member is pivotally attached to the other end portion of the horizontal balustrade with a position shifted from the axial center of the horizontal balustrade to the other side so that both diagonal materials are sandwiched between the horizontal balustrades. The handrail combined use difference of Claim 1 which can be folded in a parallel state in the both sides.   Attach a locking bracket to one end of each diagonal member, and pivot one end of each diagonal member at a position shifted downward from the axis of the horizontal handrail with respect to each end of the horizontal handrail. 2. The handrail combined use difference according to claim 1, wherein both diagonal members can be folded in parallel with each other below the horizontal handrail.

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