JP2009287304A - Scaffold beam frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beam frame capable of solving problems by making an upper connecting pin attachable to and detachable from the beam frame, and removing the connecting pin when laying a scaffold plate or a ledger frame with floor on the beam frame. <P>SOLUTION: In the scaffold beam frame formed by at least an upper chord member 2, a lower chord member 3, and diagonal members 4 interposed between both the chord members 2 and 3, a strut member 6 is provided between the diagonal members 4 and 4 of the beam frame 1, the upper end portion of the strut member 6 is opened, and a connecting pin 8 for adding a scaffold strut 7 is detachably attached to the opening part 6b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a beam frame used for a frame scaffold or a doorway of a one-side scaffold.

  For example, in the case where a carrying truck for carrying materials or the like is provided at the lower part of the frame scaffold, a part of the lower construction surface of the scaffold is made an opening, and a beam frame is bridged on the upper part of the opening to form the frame scaffold. It is supposed to be. The beam frame is formed of at least an upper chord member, a lower chord member, and a diagonal member interposed between the upper and lower chord members, and an intermediate required portion of the beam frame 1 includes a scaffolding column of a frame scaffold. A connecting pin is provided for connecting the two.

  As a conventional beam frame, specific publicly known documents such as patent gazettes cannot be cited, but in a conventional beam frame, a connecting pin for adding a scaffolding column is welded to an intermediate required portion of the beam frame. It is integrally provided so as to protrude vertically from the upper chord material.

  In the conventional beam frame, the connecting pin is integrally provided by welding at the intermediate required portion of the beam frame as described above, and protrudes 180 mm vertically upward from the upper chord material. When a passage or stage is formed by laying a cloth frame with a floor or a floor, the connecting pin provided on the upper end of the column material of the beam frame protrudes upward from the passage surface or stage surface and becomes a dangerous obstacle. In addition, since a scaffolding plate or a cloth frame with a floor cannot be laid on the part where the connecting pin protrudes, there is a gap between adjacent scaffolding plates or a cloth frame with a floor across the connecting pin. There is a problem such as falling.

  In the present invention, the upper connecting pin can be attached to and detached from the beam frame, and when laying a scaffolding board or a cloth frame with a floor on the beam frame, the beam can be solved by removing the connecting pin. The purpose is to provide a frame.

Means for solving the above problems will be described with reference numerals of the embodiments described later. The invention according to claim 1 is at least an upper chord member 2, a lower chord member 3, an upper and lower chord member 2, In the beam frame for scaffolding formed by the diagonal member 4 interposed between the column members 3, a column member 6 is provided between the diagonal members 4, 4 of the beam frame 1, and the upper end portion of the column member 6 is opened. The connecting pin 8 for adding the scaffolding strut 7 to the opening 6b is detachably attached.
It is characterized by being.

  A second aspect of the present invention is the scaffold beam frame 1 according to the first aspect, wherein the connecting pin 8 includes an upper pin portion 8a, a lower pin portion 8b, and a positioning large-diameter shaft portion 8c at the center of the pin body 8o. The upper pin portion 8a is fitted into the lower end portion of the scaffold column 7, and the lower pin portion 8b is fitted into the upper end portion of the column member 6 of the beam frame 1, and It is characterized by being fixed to the said support | pillar material 6 with the lock pin 10 which penetrates the lower side pin part 8b, It is characterized by the above-mentioned.

  The third aspect of the present invention is the scaffolding frame according to the first or second aspect, wherein the upper end 6a of the support member 6 interferes with the laying of the scaffolding plate 21 and the cloth frame 22 with the floor on the beam frame 1. It is characterized in that it protrudes from the upper side surface of the upper chord material 2 by a height h required to maintain the same level as the connecting pin 28 for the extension provided at the upper end of the scaffolding column 7.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments to be described later. According to the beam frame 1 of the invention according to claim 1, the strut material between the diagonal members 4, 4 of the beam frame 1. 6, the upper end portion of the column material 6 is opened, and the connecting pin 8 for connecting the scaffold column 7 to the opening 6 b is detachably attached. Therefore, the scaffold plate 21 and the floor are mounted on the beam frame 1. When the cloth frame 22 is laid to form a passage or a stage, the connection pin 8 is removed so that the connection pin 8 does not protrude from the upper surface of the passage or the stage. The scaffolding plate 21 and the floored cloth frame 22 can be laid on the upper chord material 2 of the beam frame 1 without any gaps, and there is no concern that tools, materials, etc. will fall.

  According to the beam frame 1 of the invention according to claim 2, the connecting pin 8 forms the upper pin portion 8a and the lower pin portion 8b with the positioning large diameter shaft portion 8c at the center portion of the pin body 8o. Therefore, when attaching to the column material 6, the lower pin portion 8 b may be fitted into the upper end portion of the column material 6, and the lock pin 10 is passed through the lower pin portion 8 b and the column material 6. As a result, the connecting pin 8 can be fixed to the column member 6.

  According to the beam frame 1 of the invention according to claim 3, the upper end 6 a of the support column 6 is provided at the upper end portion of the scaffold support column 7 without hindering the laying of the scaffold plate 21 and the cloth frame 22 with floor. Since it protrudes from the upper surface of the upper chord material 2 by a height h necessary to maintain the same level as the connecting pin 28 for adding, when the scaffolding plate 21 and the cloth frame 22 with a floor are laid on the beam frame 1, there is nothing. There is no hindrance and it is safe in use, and the scaffolding column 7 to be added to the column material 6 of the beam frame 1 and the scaffold column 7 to be added to the scaffolding column 7 connected to the end of the beam frame 1 7 is arranged at the same level, and an appropriate scaffold can be constructed, and when the connecting pin 8 is attached to the support member 6 and the scaffold support 7 is added, the load on the scaffold support 7 side Is applied to the support material 6 via the connecting pin 8 and applied directly to the upper chord material 2 No reason, there is no inconvenience such as damaging or deforming the upper chord member 2.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 (a) is a front view showing a three-span beam frame according to the present invention, and FIG. 2 (a) is an enlarged front view of the portion indicated by arrow X in FIG. 1 (a), (b) is an enlarged plan view of the portion indicated by arrow X, and (c) is the arrow in FIG. 1 (a). FIG. 3 is an enlarged front view of a portion indicated by Y, (d) is a plan view of (c), and FIG. 3 is an explanatory view showing a state in which a connecting pin is removed from a column material of a beam frame. In these drawings, reference numeral 1 denotes a beam frame according to the present invention.

  The three-span beam frame 1 is formed in a ramen structure by an upper chord member 2, a lower chord member 3, and an oblique member 4, a vertical member 5 and a column member 6 interposed between upper and lower chord members 2 and 3. As shown in FIG. 1 (a), the support material 6 is provided at two dividing points obtained by dividing the upper chord material 2 into three equal parts, and the upper end of each support material 6 is opened. A connecting pin 8 for connecting the scaffolding strut 7 upward as shown in FIGS. 5 to 7 is detachably attached to the portion 3b, and both ends of the upper chord material 2 are attached to the scaffolding strut 7 Connection portions 9 to be connected are provided. One span of the three-span beam frame 1 is the distance between the adjacent strut members 6 and 6 in FIG. 1A, and the distance between the strut members 6 and the scaffold strut 7 and is, for example, 1829 mm. It is said.

  The upper chord member 2 of the beam frame 1 is made up of three equally divided chord members 2a, 2a, 2a, and the lower chord member 3 is also made up of three chord members 3a, 3a, 3a. It is provided between the upper and lower chord members 2a and 3a on each end side and the intermediate upper and lower chord members 2a and 3a. A plurality of diagonal members 4 are interposed between the upper and lower chord members 2a and 3a on the left and right ends, and a plurality of vertical members 5 are interposed between the upper and lower chord members 2a and 3a. The string members 2a and 3a, the diagonal member 4, the vertical member 5 and the column member 6 are all formed of steel pipes.

  As can be seen from FIG. 3, the upper end 6 a of the column material 6 slightly protrudes from the upper side surface of the upper chord material 2, and the protruding height h is, for example, 10 mm. It is much smaller than the thickness.

  As shown in FIG. 3, the connecting pin 8 has a positioning large-diameter shaft portion 8c at the central portion in the vertical axis direction of the pin body 8o, and the upper pin portion 8a and the lower pin are separated from the large-diameter shaft portion 8c. 2b, the lower end portion of the support column 7 is fitted to the upper pin portion 8a when the scaffold support column 7 is added, and the lower pin portion 8b is shown in FIG. As shown in the figure, it is fitted in the upper end portion of the column material 6 of the beam frame 1 and is positioned by the positioning large-diameter shaft portion 8c. It is fixed to the material 6. Further, the upper end surface of the positioning large-diameter shaft portion 8c of the connecting pin 8 becomes a column receiving step portion 8A that receives the lower end of the scaffold column 7 fitted to the upper pin portion 8a when the column is added.

  In FIG. 3, 11 is a pin insertion hole provided on the lower side of the lower pin portion 8 b of the connecting pin 8, 12 is a pin insertion hole provided in the upper end portion of the support material 6 for inserting the lock pin 10, Reference numeral 13 denotes a snap pin that is inserted into the pin hole 10a at the tip of the lock pin 10 in order to prevent the lock pin 10 from coming off.

  Further, the connecting portions 9 provided at both ends of the upper chord member 2 are formed into a box frame shape by pressing a steel plate as schematically shown in (c) and (d) of FIG. It has a horizontal opening 15 into which the flange member 14 fixed to the scaffolding column 7 is fitted, and an engagement hole 16 penetrating in the vertical direction. Thus, in order to connect each end portion of the upper chord member 2 to the column 7, the flange member 14 provided on the scaffold column 7 is connected to the horizontal portion of the connection portion 9 as shown in FIGS. With the wedge piece 17 inserted into the engagement hole 18 of the flange member 14 from the engagement hole 16 of the connection part 9 in a state of being fitted into the opening 15, each end of the upper chord material 2 is attached to the column 7. To be connected to.

  Further, as shown in FIGS. 2 (a) and 2 (b), the column members 6 are respectively provided with column members 6 and 6 which are opposed to each other in the lateral direction of the beam frame 1 arranged in parallel at the upper end portion and the lower end portion. A flange member 19 for connection by a lateral stay 20 (see FIGS. 5 to 7) is fixed, and each flange member 19 is provided with an engagement hole 19a. In addition, the connection part similar to the connection part 9 of the above-mentioned upper chord material 2 is provided in the both ends of the horizontal stay 20, respectively, Therefore, the connection of the support | pillar material 6 of this beam frame 1 and the horizontal stay 20 is FIG. This is the same as the connection between the end portion of the upper chord member 2 and the scaffold strut 7 of the frame scaffold described in (c) and (d).

  4A is a front view showing a two-span beam frame 1 according to the present invention, and FIG. 4B is a front view showing a 1.5-span beam frame 1. The two-span beam frame 1 shown in (a) has a column material 6 at one central portion in the length direction, and two spans are formed between the scaffolding columns 7 and 7 of the frame scaffolds connected to both ends. In addition, the 1.5-span beam frame 1 shown in (b) forms one span between the column material 6 and the scaffolding column 7 of the frame scaffolding on one end side, and the frame scaffolding on the other end side. 0.5 spans are formed between the columns 7 and each span is set to 1829 mm, for example. A connecting pin 8 is detachably attached to the upper end of each column member 6 of the two-span beam frame 1 shown in FIG. 4 (a) and the 1.5-span beam frame 1 shown in FIG. 4 (b). The connecting pin 8 and the mounting structure thereof are completely the same as those of the three-span beam frame 1 shown in FIGS.

  FIG. 5 shows that, for example, a part of the lower surface of the scaffold W is formed as an opening O in order to provide a loading path for a material transportation truck at the lower part of the frame scaffold W, and the beam frame 1 is formed above the opening O. In this example, a stage is formed by laying a scaffolding plate 21 made of an aluminum extruded profile on the beam frames 1. The case where the scaffolding board 21 is laid on the upper chord material 2 with the connecting pin 8 detachably provided on the upper end portion of the support material 6 attached without being removed is shown. (a) is a front view and (b) is a plan view. The beam frame 1 illustrated in FIG. 5 is a two-span beam frame 1 shown in FIG.

  Thus, in a state where the connection pins 8 are still attached to the respective column members 6 of the beam frame 1, the connection pins 8 are formed on the upper surface of the stage formed by the scaffolding plate 21 as shown in FIG. Since the connecting pin 8 protrudes from the door, the connecting pin 8 becomes a dangerous obstacle, and the scaffolding plate 21 cannot be laid on the protruding portion of the connecting pin 8 as shown in FIG. There is a possibility that a gap S is formed between the adjacent scaffold plates 21 and 21 across the pin 8, and tools, materials, etc. may fall from the gap S.

  6, in order to eliminate the inconvenience in the case shown in FIG. 5, a stage is formed by laying a large number of aluminum extruded shape scaffolding plates 21 on the beam frame 1 from which the connecting pins 8 are removed from the respective support members 6. Shows the case. When the connecting pins 8 are removed from the support members 6 in this way, the connecting pins 8 do not protrude from the upper surface of the stage formed by the scaffolding plate 21, which is safe and the scaffolding on the upper chord material 2 of the beam frame 1. The plate 21 can be laid without any gaps, and there is no need to worry about tools or materials falling. When the connecting pin 8 is removed from the support member 6, the upper end 6a of the support member 6 protrudes slightly from the upper side surface of the upper chord member 2 of the beam frame 1 by h (for example, 10 mm). Since the shape-made scaffolding plate 21 has a height of 30 mm or more and has a U-shaped cross-section, the upper end protruding portion h of the column member 6 is accommodated in the scaffolding plate 21, and there is no problem.

  Moreover, the upper end protrusion part h of this support | pillar material 6 is also a height required in order to maintain the same level as the connection pin for the extension provided in the upper end part of a scaffolding support | pillar. That is, FIG. 8 shows a connecting pin 28 for extension projecting from the upper end portion of the scaffolding column 7, and the lower end portion of the scaffolding column 7 is fitted to this coupling pin 28 as shown in phantom lines in FIG. As shown in FIG. 2 (a), and the upper end of the column member 6 of the beam frame 1 as shown in FIG. 2 (a). The supporting pins 8A of the connecting pins 8 to be attached need to be at the same level as the supporting pins 8A. As shown in FIG. By adding the height n of the large diameter shaft portion 8c, the height H from the flange member 19 of the column member 6 to the column receiving step portion 8A of the connecting pin 8 is changed to the flange member 14 of the scaffold column 7 shown in FIG. Same as the height H from the connecting pin 28 for the extension to the column receiving step 28A. Accordingly, the scaffolding column 7 added to the column member 6 of the beam frame 1 and the scaffolding column 7 added to the scaffolding column 7 connected to the end of the beam frame 1 are arranged at the same level. can do.

  Further, by projecting the upper end 6a of the support material 6 from the upper side surface of the upper chord material 2, when the connection pin 8 is attached to the support material 6 and the scaffold support 7 is added, the load on the scaffold support 7 side is the connection pin 8 Since the upper chord material 2 is not directly applied to the upper chord material 2, there is no inconvenience such as deformation of the upper chord material 2. Incidentally, when the upper end 6a of the support material 6 is positioned on the upper surface of the upper chord material 2, not only the support material 6 but also the upper chord material 2 is loaded on the scaffold support 7 side. The upper chord material 2 may be deformed or damaged.

  In FIG. 6 (b), reference numeral 22 denotes a floor cloth frame 22 laid over the horizontal stay 24 on the frame scaffold W side, and 23 denotes a narrow floor cloth frame laid over the horizontal stay 24. Show.

  FIG. 7 shows a case where a stage is formed by laying a large number of cloth frames 22 with floors on the beam frame 1 with the connecting pins 8 removed from the support members 6 as in the case of FIG. . In this case as well, the upper end 6a of each column member 6 protrudes from the upper side surface of the upper chord member 2 of the beam frame 1. However, since the protruding height is about 10 mm at most, there is no problem in using the stage. There is no. In FIG. 7 (b), cloth frames 22 and 23 with floors are bridged on the lateral stay 24 on the frame scaffold W side.

(a) is a front view showing a three-span beam frame according to the present invention, and (b) is a plan view. (a) is an enlarged front view of the portion indicated by arrow X in FIG. 1 (a), (b) is an enlarged plan view of the portion indicated by arrow X, and (c) is indicated by arrow X in FIG. 1 (a). (D) is a plan view of (c). It is explanatory drawing which shows the state which removed the connection pin from the support | pillar member of a beam frame. (a) is a front view showing a two-span beam frame according to the present invention, and (b) is a front view showing a 1.5-span beam frame. The form of use of the beam frame with the connecting pin attached to the column material is shown. (A) is a front view of the scaffold plate laid on the beam frame, and (b) is a plan view thereof. The form of use of the beam frame in a state where the connecting pin is removed from the column material is shown, (a) is a front view of the scaffold plate laid on the beam frame, and (b) is a plan view thereof. The form of use of the beam frame with the connecting pin removed from the column material is shown, (a) is a front view of a state in which a cloth frame with a floor is laid on the beam frame, and (b) is a plan view thereof. It is explanatory drawing which shows the connection pin provided in the upper end part of the scaffolding support | pillar.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Beam frame 2 Upper chord material 3 Lower chord material 6 Strut material W Frame scaffold 7 Scaffold strut 8 of frame scaffold 8 Connecting pin 8a Upper pin part 8b Lower pin part 8o Large diameter shaft part 10 for positioning 10 Lock pin

Claims (3)

  At least in the scaffolding beam frame formed by the upper chord material, the lower chord material, and the diagonal material interposed between the upper and lower chord materials, a support material is provided between the diagonal materials of the beam frame, A scaffolding beam frame, wherein an upper end is opened, and a connecting pin for attaching a scaffolding column to the opening is detachably attached.   The connecting pin forms an upper pin portion and a lower pin portion with a large diameter shaft portion for positioning at the center portion of the pin body, and the upper pin portion is fitted into the lower end portion of the scaffolding column, and the lower pin portion Is fitted into the upper end portion of the support member of the beam frame, and is fixed to the support member by a lock pin penetrating the support member and the lower pin part. Item 2. A scaffolding frame according to item 1.   The upper end of the strut material is necessary to maintain the same level as the connecting pin for the extension provided on the upper end portion of the scaffolding pillar without causing any trouble in laying the scaffolding plate or the cloth frame with the floor on the beam frame. The beam frame for a scaffold according to claim 1 or 2, wherein the beam frame projects from the upper side surface of the upper chord material by a height.

Images