JP4020894B2 - Aluminum scaffolding and scaffolding equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an aluminum scaffolding frame used for assembling a scaffolding device for work at height, which is commonly called a “rolling tower” in the construction industry, and a scaffolding device using the scaffolding frame. It is.

  6A is a front view of an aluminum rolling tower, FIG. 6B is a side view, and FIG. 6C is a partially enlarged perspective view. This rolling tower has an aluminum scaffolding frame 13 formed by horizontally connecting an aluminum cross member 2 to a pair of aluminum vertical members 1 and 1 on both sides as shown in (b). As shown in the figure, the aluminum bracings 15 and the horizontal braces 16 are stretched between the aluminum vertical members 1 and 1 facing each other at the fixed intervals and facing the aluminum building frames 13 and 13 facing each other. A scaffold plate 4 is bridged between the two aluminum scaffold building frames 13, 13 facing each other to form a first-stage scaffold A, and each aluminum scaffold building frame 13 of the first-stage scaffold A is respectively An aluminum scaffolding frame 13 is added, and the diagonal braces 15 and horizontal braces 1 are placed between the opposing aluminum vertical members 1 and 1 of the opposing aluminum scaffolding frames 13 and 13 in the same manner as described above. The scaffolding plate 4 is bridged between the opposing aluminum scaffolding frames 13 and 13 to form a second stage scaffold B, and a third stage scaffold C is formed in a similar manner. Formed.

  As shown in FIG. 6 (c), each brace 15 and 16 is formed by providing aluminum hooks 18 at both ends of the aluminum brace body 17, and the hooks of each brace 15 and 16 are assembled when the scaffold is assembled. 18 is engaged with and attached to the aluminum cross member 2 of the scaffolding frame 3 from above. In addition, in the front part of (a) of FIG. 6, it seems that the diagonal braces 15 cross | intersect, but this is one slantingly hung on the left side surface side of scaffolding AC of each step | level. This is because the slanted brace 15 and the other slanted brace 15 stretched in the opposite slanting manner to the slanted brace 15 on the right side of the opposite side appear to overlap. In the scaffolds A to C at each stage, the aluminum diagonal braces 15 cross two diagonal braces 15 between the opposing aluminum vertical members 1 and 1 of the opposing aluminum scaffold building frames 13 and 13. It cannot be hung by crossing the shape.

  In the prior art, aluminum braces 15 and 16 having hooks 18 provided at both ends of the brace body 17 are stretched to hold the opposing aluminum scaffolding frames 13 and 13 at regular intervals. However, these aluminum braces 15 and 16 are much more expensive than steel braces, and are inferior to steel braces in strength, so they are cheaper and have sufficient strength instead of aluminum braces. It is desirable to use steel braces.

  Therefore, the present inventor has made a steel crossing streak that is inexpensive among steel braces, and that can be used to hang two staggers (braces) in a crossing manner to reliably reinforce the scaffolding frame. An attempt was made to develop an aluminum scaffolding frame that could be attached. This crossing difference is commonly used in steel pipe scaffolding building frames, with steel locking claw fastening pins attached by welding to the required parts of steel pipe vertical members of the scaffolding frame, By inserting a hole provided at the end of the steel streak and locking it with a lock claw, the end of the streak is fixed.

  However, when attaching a steel fastening pin with a lock claw to an aluminum vertical member of an aluminum scaffolding frame, the fastening pin is made of iron, so it cannot be welded to an aluminum vertical member. Faced with. Accordingly, as a result of various researches and studies, the present inventor has been able to appropriately weld and fix a steel fastening pin with a locking claw to an aluminum vertical member, thereby making it possible to cross the steel. It is an object of the present invention to provide an aluminum scaffolding frame that can be attached with different muscles.

  Means for solving the above problems will be described with reference numerals in the embodiments described later. The invention according to claim 1 is such that an aluminum horizontal member 2 is horizontally connected to a pair of aluminum vertical members 1 on both sides. In the building frame for aluminum scaffolds formed as above, fastening with lock claws for detachably fastening the ends of the steel crossing streaks 5 to the inner side required parts of the respective aluminum vertical members 1 In attaching the pin 6, an aluminum cylindrical sleeve having an inner diameter smaller than the outer diameter of the steel fastening pin 6 is provided on the other end side of the steel fastening pin 6 provided with a lock claw 7 on one end side. The aluminum cylindrical sleeve 8 is inserted into the aluminum vertical member 1 in the diameter direction and welded to the aluminum vertical member 1 by aluminum welding. The lock claw fastening pins 6, characterized by comprising attached to an aluminum longitudinal member 1.

  A scaffold apparatus according to a second aspect of the present invention is an aluminum vertical member in which the aluminum scaffolding frame 3 according to the first aspect is disposed to face each other at regular intervals, and the two aluminum scaffolding frames 3 and 3 are opposed to each other. 1 and 1, the steel crossing streaks 5 are stretched in a cross shape through the steel fastening pins 6 of the vertical members 1, and between the opposing aluminum scaffolding frames 3 and 3. A first-stage scaffold A is formed by bridging the scaffolding plate 4, and the next aluminum scaffold building frame 3 is added to each aluminum scaffold building frame 3 of the first-stage scaffold A, and the steel crossing is performed in the same manner as described above. A plurality of stages of scaffolds A to D are formed by stretching the different streaks 5 and suspending the scaffold plate 4.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments described later. According to the aluminum scaffold building frame of the invention according to claim 1, the inner side required portion of the aluminum vertical member 1 The other end of the steel fastening pin 6 provided with a locking claw 7 on one end side when attaching the fastening pin 6 with a locking claw for detachably fastening the end of the steel crossing bar 5 The part side is press-fitted into an aluminum cylindrical sleeve 8 having an inner diameter smaller than the outer diameter of the steel fastening pin 6, and the aluminum cylindrical sleeve 8 is penetrated through the aluminum longitudinal member 1 in the diameter direction. In addition, since the aluminum longitudinal member 1 is welded with aluminum, the cost is low among steel braces, and it is suitable for the opposing longitudinal members 1 and 1 of the opposing building frames 3 and 3. Made Kakehari the intersection shape, the cross for strain 5 is made of steel and the scaffold Kenwaku 3 can reliably sufficiently reinforced, thereby simplifying easily mounted can be vertically material 1 made of aluminum scaffolding Kenwaku 3.

  According to the scaffold device of the invention according to claim 2, conventionally, the scaffold building frame and the brace that constitute the scaffold device such as a rolling tower are all made of aluminum, whereas the scaffold building frame is used. Although the thing made from aluminum is used about 3, since the thing made from steel cheaper than the thing made from aluminum is used for the streaks 5 which are braces, the cost of the whole scaffold apparatus can be made cheap. Further, the bracing line 5 is a crossing line 5, and the two vertical lines 5, 5 cross in a cross shape between the aluminum vertical members 1, 1 of the two aluminum scaffolding frames 3, 3. Thus, the scaffolding frame 3 can be reliably reinforced and a robust scaffold device can be formed.

  A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 (a) is a front view showing an aluminum scaffolding frame 3 according to the present invention, and (b) is an arrow of (a). 3 is an enlarged view of a portion surrounded by X. FIG. The aluminum scaffolding frame 3 is composed of a pair of aluminum vertical members 1, 1 on both sides and a plurality of aluminum horizontal members 2 that are horizontally connected between the vertical members 1, 1. 1 and each cross member 2 are each made of an aluminum pipe, and when the building frame 3 for scaffolding is added to the upper end portion of each vertical member 1, both are fitted into the lower end portion of the vertical member 1 of the upper vertical frame 3. A connecting shaft portion 1a for connecting the longitudinal members 1 and 1 is formed. Each vertical member 1 has steel fastening pins 6 with locking claws for detachably fastening the ends of the steel crossing bars 5 at both the upper and lower ends of the inner surface. FIG. 1 (b) shows an enlarged view of the attachment structure of the fastening pin 6 with a steel locking claw.

  Next, a method for attaching the steel locking claw fastening pin 5 to the vertical member 1 of the aluminum scaffolding frame 3 will be described with reference to FIGS. As shown in FIG. 1 (b), the fixing pin 6 has a substantially triangular iron lock claw 7 that is normally urged by a spring (not shown) and protrudes from the outer surface of the pin 6 at one end. This is an iron rod pin provided on the side.

  When attaching the steel fastening pin 5 with the lock claw to the vertical member 1 of the aluminum scaffolding frame 3, first, as shown in FIGS. 2 (a) to (c), the lock claw 7 is attached to one end side. The other end side of the steel fastening pin 6 provided with is pressed into an aluminum cylindrical sleeve 8 having an inner diameter (for example, 16 mm) smaller than the outer diameter (for example, 13 mm) of the fastening pin 6. The cylindrical sleeve 8 is formed by cutting an aluminum pipe having an inner diameter as described above so as to be longer than the diameter of the vertical member 1 of the scaffold building frame 3 by a required length. FIG. 2B shows a state in which the fastening pin 6 is press-fitted halfway into the cylindrical sleeve 8, and it can be seen that the diameter of the portion of the sleeve 8 into which the fastening pin 6 is press-fitted is increased. (C) of the figure shows a state where the fastening pin 6 is press-fitted over the entire length of the cylindrical sleeve 8 and the press-fitting is finished.

The cylindrical sleeve 8 whose outer diameter is expanded by press-fitting the fastening pin 6 as described above is shown in FIG.
As shown in FIG. 2, the predetermined portion of the vertical member 1 made of aluminum is passed through the through hole 9 penetrating in the diametrical direction of the vertical member 1, and both end portions of the sleeve 8 protrude from both side surfaces of the vertical member 1 by the same length. State. The through hole 9 of the longitudinal member 1 may be a hole that can be inserted into the cylindrical sleeve 8 into which the fastening pin 6 is press-fitted, and is formed slightly larger than the outer diameter of the cylindrical sleeve 8. Has been.

  As shown in FIG. 3 (b), both ends of the aluminum cylindrical sleeve 8 passed through the through hole 9 of the aluminum vertical member 1 are welded to the aluminum vertical member 1 as shown in FIG. The fixing pin 6 with the lock claw is integrally fixed to the vertical member 1 made of aluminum. In the figure, the aluminum weld is indicated by AW.

  As described above, when attaching the fastening pin 6 with the lock claw for removably fastening the end portion of the steel crossing cross 5 to the inner side required portion of the aluminum vertical member 1, The other end side of the steel fastening pin 6 provided with the lock claw 7 is press-fitted into an aluminum cylindrical sleeve 8 having an inner diameter smaller than the outer diameter of the steel fastening pin 6, and this aluminum cylindrical sleeve 8 is penetrated in the diameter direction of the aluminum vertical member 1 and the aluminum vertical member 1 is welded with aluminum, so that the cost is low among the steel braces, and the opposite frames 3 for the two scaffolds. The steel crossing streaks 5 that can be stretched in a crossing manner against the three opposite vertical members 1 and 1 and can surely sufficiently reinforce the scaffolding frame 3 are made of the vertical material of the aluminum scaffolding frame 3. 1 It will allow to attach.

  FIG. 4 shows a state in which the steel crossing bars 5 are attached to the vertical member 1 of the aluminum scaffolding frame 3. That is, the crossing bars 5 made of steel are composed of, for example, an iron round bar-shaped main body 5a and flat mounting end portions 5b, 5b integrally formed at both ends of the round bar-shaped main body 65a. The mounting end 5b is provided with a hole 5c that passes through the fastening pin 6 with a locking claw that protrudes toward the vertical member 1 of the scaffolding frame 3. Thus, in order to attach the steel crossing bars 5 to the vertical member 1, the fixing pin 6 in the state in which the locking claw 7 of the fixing pin 6 protruding toward the vertical member 1 is pressed and retracted is used. Since the lock claw 7 returns to the protruding state after the hole 5c of the attachment end 5b is inserted and inserted, the lock claw 7 is locked.

  (A) of FIG. 5 is a front view showing a rolling tower (scaffolding device for high-altitude work) assembled using the aluminum scaffolding frame 3 according to the present invention as described above, and (b) is a side view. It is.

  In order to assemble this rolling tower, the aluminum scaffolding frame 3 according to the present invention as shown in FIG. 1 (a) is opposed to the left and right at regular intervals as shown in FIG. 5 (a). Between the opposing aluminum vertical members 1 and 1 of the opposing aluminum scaffolding frames 3 and 3, the cross 5 made of aluminum is crossed as shown in FIGS. 5 (a) and 5 (b). In this manner, the scaffolding plate 4 is bridged between the two aluminum scaffolds 3 and 3 facing each other, thereby forming the first-stage scaffolding A. The outrigger 10 is attached to the first stage scaffold A as shown in FIGS. 5 (a) and 5 (b).

  An upper aluminum scaffolding building frame 13 is added to the upper end of each aluminum scaffolding building frame 3 forming the first stage scaffolding A, and the opposing aluminum scaffolding building frames 3 and 3 are made of opposing aluminum. The second stage is obtained by stretching the aluminum bars 5 between the longitudinal members 1 and 1 so as to cross each other in a cross shape, and spanning the scaffolding plate 4 between the opposing aluminum scaffolding frames 3 and 3. Scaffold B is formed. Thereafter, in the same manner, a third stage scaffold C and a fourth stage scaffold D are formed, and a rolling tower, which is a scaffold device for working at high places as shown in FIGS. 5 (a) and 5 (b), is assembled. In FIGS. 5 (a) and 5 (b), reference numeral 11 denotes a wall-supporting member provided on the uppermost stage scaffold D. The abutting piece 11a side of the tip is extendable, and this abutting piece 11a is structured. The rolling tower is prevented from falling down by contacting and supporting the wall surface of the object.

  According to the rolling tower (scaffolding device for aerial work) assembled as described above, all of the scaffolding frames and braces constituting the tower are conventionally made of aluminum, whereas the scaffolding building is used. The frame 3 is made of aluminum, but the brace striation 5 uses cheaper steel than aluminum, so the cost of the entire rolling tower can be reduced. . The bracing line 5 is a crossing line 5, and the two vertical lines 5, 5 are crossed between the aluminum vertical members 1, 1 facing each other of the aluminum scaffolding frames 3, 3. Since it is stretched so as to intersect, the scaffolding frame 3 can be reliably reinforced and a robust rolling tower can be formed.

(a) is a front view of an aluminum scaffolding building frame according to the present invention, and (b) is an enlarged view of a portion surrounded by an arrow X in (a). (a)-(c) is explanatory drawing explaining the first half part of the process of attaching the fastening pin with a steel lock claw to the vertical member of the aluminum scaffolding frame. (a) And (b) is explanatory drawing explaining the latter half part of the said process. It is a perspective view of the state which attached the crossing reinforcement made from steel to the vertical member of the aluminum building frame. (a) is a front view of the rolling tower assembled using the aluminum scaffolding frame of the present invention, and (b) is a side view. (a) is a front view of a rolling tower assembled using a conventional aluminum scaffolding frame, (b) is a side view, and (c) is a partially enlarged perspective view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vertical material 2 Horizontal material 3 Aluminum scaffolding frame 4 Scaffold board 5 Steel crossing difference 6 Locking pin with locking claw 7 Locking claw 8 Aluminum cylindrical sleeve AW Aluminum welding part

Claims (2)

In an aluminum scaffolding frame formed by horizontally connecting an aluminum cross member to a pair of aluminum vertical members on both sides,
In order to attach a fastening pin with a lock claw for detachably fastening a steel crossing end of the crossing to the inner side required portion of each aluminum vertical member, steel having a lock claw on one end side The other end of the fastening pin is press-fitted into an aluminum cylindrical sleeve having an inner diameter smaller than the outer diameter of the steel fastening pin, and the aluminum cylindrical sleeve is inserted into the aluminum longitudinal member. A building frame for an aluminum scaffold characterized in that a steel fastening pin with a locking claw is attached to an aluminum vertical member by penetrating in the diametrical direction and aluminum welding to the aluminum vertical member. The aluminum scaffold building frames according to claim 1 are arranged to face each other at regular intervals, and between the aluminum vertical members facing each other of the aluminum scaffold building frames, steel fastening pins of each vertical member are interposed. The first stage scaffolding is formed by hanging the crossing streaks made of steel in a cross shape, and the scaffolding board is built between the opposing aluminum scaffolding frames. For each aluminum scaffolding of this first stage scaffolding A scaffold device in which a multi-stage scaffolding is formed by adding the following aluminum scaffolding building frame to the building frame, applying the steel crossing streaks in the same manner as described above, and spanning the scaffolding plate.

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