JP2012172385A - Ladder fixture metal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ladder fixture metal fitting with which a ladder can be easily attached to and detached from a temporary footing platform and can be surely fixed to a footing platform member, and which is configured simple and low-priced.SOLUTION: An approximately U-shaped lock piece 2 to be locked to a lateral member L of a temporary footing platform and an approximately U-shaped holding piece 3 for holding a leg B of a ladder A are arranged to oppose their opening sides, the lock piece 2 and the holding piece 3 are screwed by a screw body 4 and in accordance with a fastening/unfastening operation of the screw body 4, an interval between the lock piece 2 and the holding piece 3 can be freely adjusted. When fixing the ladder A to the temporary footing platform, the lock piece 2 is locked to the lateral member L of the temporary footing platform. On the other hand, the leg B of the ladder A is held by the holding piece 3. At the same time, the screw body 4 is operated to make the holding piece 3 proximate to a side of the lock piece 2, and the leg B of the ladder A is held between the lateral member L of the temporary footing platform and the holding piece 3 and fixed.

Description

  The present invention relates to a ladder fixing bracket for fixing a raising / lowering ladder attached to a temporary scaffold installed in a construction site, a construction site, or the like.

  In general, temporary scaffolds constructed by assembling a plurality of steel vertical members, cross members, scaffolding plates, and the like are installed at construction sites and construction sites. In the temporary scaffold, when a multi-level scaffold is constructed according to the scale and progress of the construction, for example, a temporary staircase or a ladder may be attached for ascending and descending the worker up and down.

  Conventionally, when a ladder is attached to a temporary scaffold, for example, in a state where the ladder is simply stood on the temporary scaffold, the ladder pedestal and the vertical and horizontal members of the temporary scaffold are bound and fixed by a wire or the like. However, it is necessary to bind and release the numbered wires each time the ladder is installed / removed, which is very troublesome and inefficient. In addition, if the number is loosened, the ladder will become unstable and unstable. However, there is a concern that it has problems.

  On the other hand, for the above problem, for example, a locking clamp is fixed to a ladder pillar or the like, and a ladder is attached by locking the locking clamp to a cross member or the like of a temporary scaffold. (See Patent Documents 1 and 2). According to the above proposal, the ladder can be attached / removed relatively easily by the locking / unlocking operation of the locking clamp, and the work efficiency is excellent, and the locking clamp can securely fix the scaffolding member and the safety is also excellent. It is expected that

JP-A-9-324530 Japanese Utility Model Publication No. 6-28090

  However, in the above proposal, a dedicated ladder formed by fixing one or a plurality of locking clamps to a ladder pillar or the like instead of the existing ladder is adopted, which is disadvantageous in terms of cost. There is concern about being there.

  In view of the above-described points, the present invention provides a ladder fixing bracket that can be easily attached to and detached from a temporary scaffolding, can be securely fixed to a scaffolding member, and has a simple structure and is inexpensive. And

  In order to solve the above-mentioned problems, the ladder fixing bracket according to the present invention is a lifting bracket fixing bracket attached to a temporary scaffold formed by assembling a plurality of vertical members, cross members, scaffolding plates, etc. A substantially U-shaped locking piece for locking to the cross member and a substantially U-shaped holding piece for holding the leg of the ladder are arranged so that the respective opening portions face each other, and The locking piece and the holding piece are screwed together with a screw body of a predetermined length, the interval between the locking piece and the holding piece can be adjusted according to the tightening operation of the screw body, and a ladder is temporarily installed. When fixing to the scaffold, the locking piece is locked to the cross member of the temporary scaffold, while the ladder pedestal is held by the holding piece, and the screw body is operated to hold the holding piece on the locking piece side. It is characterized in that the ladder pedestal is sandwiched between the cross member of the temporary scaffolding and the holding piece and fixed.

  According to the ladder fixing bracket according to the present invention, a substantially U-shaped locking piece that is locked to the cross member of the temporary scaffold, and a substantially U-shaped holding piece that holds the leg of the ladder, respectively. The locking piece and the holding piece are screwed together with a screw body of a predetermined length, and the locking piece and the holding piece are held in accordance with the tightening operation of the screw body. When the ladder is fixed to the temporary scaffold, the latch piece is locked to the transverse material of the temporary scaffold, while the ladder pedestal is held by the holding piece; and The structure is such that the holding piece is moved closer to the locking piece side by operating the screw body, and the ladder pedestal is clamped and fixed between the horizontal member of the temporary scaffold and the holding piece, so the ladder is attached to the temporary scaffold.・ Easy to remove, excellent work efficiency, secure to the scaffold member, high safety, simple structure and existing ladder Also it is advantageous in terms of cost because it is available.

It is (a) front view, (b) top view, (c) side view of one embodiment of the ladder fixing bracket according to the present invention.

  According to the ladder fixing bracket according to the present invention, the substantially U-shaped locking piece that can be locked to the cross member of the temporary scaffold, and the substantially U-shaped holding piece that can hold the leg of the ladder. The locking pieces and the holding pieces are screwed together with a single screw body of a predetermined length, and the opening portions are opposed to each other. Thus, the interval between the locking piece and the holding piece is adjustable.

  When attaching a ladder to a temporary scaffold installed at a construction site or a construction site, first, the ladder is stood against a desired position of the temporary scaffold, and the holding piece is locked to the transverse member of the temporary scaffold. Hold the ladder pedestal with a piece. Then, from this state, the screw body is operated in the tightening direction so that the holding piece is brought close to the locking piece side, and the pedestal of the ladder is clamped between the cross member of the temporary scaffold and the holding piece and fixed. Next, in the same procedure, the other pedestal of the ladder is also fixed to the cross member with a fixing bracket, and the work of attaching the ladder to the temporary scaffolding is completed.

  At this time, each leg column of the ladder is firmly fixed in a state where it is sandwiched between the holding piece of the fixing bracket and the cross member of the temporary scaffold without any gap, so there is a risk that it will loosen and wobble during use. Therefore, high work safety can be ensured.

  On the other hand, when removing the ladder from the temporary scaffold, the procedure may be reversed to the above procedure.First, the holding piece is moved away from the locking piece by operating in the direction of loosening the screw body, and one leg column of the ladder is moved. Release from the sandwich. Then, the locking of the temporary scaffold to the cross member by the locking piece is released, and the fixing bracket is removed from the ladder pillar. Next, the fixing bracket of the other pedestal of the ladder is also removed in the same procedure, and the removal work of the ladder from the temporary scaffold is completed.

  As described above, according to the ladder fixing bracket of the present invention, the ladder can be easily attached to and detached from the temporary scaffolding, the work efficiency is high, and the fixing to the scaffolding member is firm and there is no risk of loosening during use. In addition, the structure of the fixing bracket itself is simple, the existing ladder can be used as it is, the cost is kept low, and it is relatively easy to adopt.

  Embodiments of the present invention will be described below with reference to the drawings.

  Construction sites and construction sites are equipped with temporary scaffolds composed of a plurality of steel vertical members, cross members, scaffolding plates, etc., and ladders A for raising and lowering workers are attached to the temporary scaffolds. Yes. The ladder A is an existing general ladder member composed of a pair of leg posts B and a plurality of step members C installed between the leg posts B at a predetermined interval.

  In the figure, reference numeral 1 denotes a steel ladder fixing bracket for fixing the ladder A to the temporary scaffold, and includes a substantially U-shaped locking piece 2 that can be locked to the cross member L of the temporary scaffold, and the ladder A. As shown in the figure, the holding pieces 3 having a substantially U-shape in plan view that can hold the pedestal B are arranged so that the respective opening portions face each other, and the holding pieces 3 are held. The piece 3 is screwed with a single screw body 4 having a predetermined length.

  The screw body 4 is composed of a male screw 4a and a female screw 4b having a predetermined length, and a short tube 5 having a holding piece 3 fixed to the outer peripheral surface is slidably fitted to the male screw 4a. The locking piece 2 is fixed to the outer peripheral surface of the female screw 4b, and the locking piece 2 and the holding piece 3 are adjusted by adjusting the length of the screw body 4 according to the loosening operation of the male screw 4a. The interval between and can be adjusted.

  When attaching the ladder A to the temporary scaffold with the ladder fixing bracket 1 having the above structure, first, the ladder A is leaned on a desired position of the temporary scaffold, and the pedestal B of the ladder A is brought into contact with the cross member L of the temporary scaffold. After that, the locking piece 2 fixed to the female screw 4b on one end side of the fixing bracket 1 is locked to the cross member L of the temporary scaffold, while the short pipe loosely fitted on the male screw 4a on the other end side of the fixing bracket 1 5 is used to hold the pedestal B of the ladder A lightly. Then, by operating the male screw 4a in the tightening direction from that state, the loosely fitted short tube 5 is gradually brought closer to the locking piece 2 side, and finally the pedestal of the ladder A B is sandwiched and fixed between the cross member L of the temporary scaffold and the holding piece 3 of the short tube 5 indicated by the solid line in the drawing. Next, the other pedestal B of the ladder A is fixed to the cross member L by the fixing bracket 1 separately prepared in the same procedure, and the installation work of the ladder A to the temporary scaffolding is completed.

  At this time, as shown in the drawing, each of the pedestals B of the ladder A is firmly fixed in a state of being sandwiched between the holding piece 3 of the fixing bracket 1 and the cross member L of the temporary scaffold without any gap. Therefore, even if a strong impact or the like is applied during use, there is no risk of loosening and wobbling or detachment, and high work safety can be secured stably.

  On the other hand, when removing the ladder A from the temporary scaffold, the procedure may be reversed. First, after loosening the male screw 4a, the loosely-fitted short tube 5 as shown by a two-dot chain line in the figure. Is slid to the side away from the locking piece 2 to release one leg pillar B of the ladder A from the sandwiched body. And the latching to the cross member L of the temporary scaffold by the latching piece 2 of the female screw 4b is cancelled | released, and the fixing bracket 1 is removed from the pedestal B of the ladder A. FIG. Next, the fixing bracket 1 of the other pedestal B of the ladder A is also removed in the same procedure, and finally the ladder A is removed from the temporary scaffold to complete the work.

  As described above, according to the ladder fixing bracket 1 of the present invention, it is easy to attach / remove the ladder A to / from the temporary scaffolding, it is excellent in work efficiency, can be firmly fixed to the scaffold member, and the work safety is high. The bracket itself has a very simple configuration, and an existing general ladder member can be used as it is, which can be realized at a relatively low cost and is easy to adopt.

DESCRIPTION OF SYMBOLS 1 ... Ladder fixing bracket 2 ... Locking piece 3 ... Holding piece 4 ... Screw body 4a ... Male screw 4b ... Female screw 5 ... Short pipe A ... Ladder B ... Leg pillar (ladder)
C ... Step (ladder) L ... Side material (temporary scaffolding)

Claims (1)

  A fixing bracket for a lifting ladder attached to a temporary scaffold formed by assembling a plurality of vertical members, cross members, scaffolding plates, etc., and a substantially U-shaped locking piece for locking to the horizontal member of the temporary scaffold, and the ladder The substantially U-shaped holding pieces for holding the pedestal are arranged so that the respective opening portions face each other, and the locking piece and the holding piece are screwed with a screw body of a predetermined length. The interval between the locking piece and the holding piece can be adjusted according to the tightening operation of the screw body, and when the ladder is fixed to the temporary scaffold, the locking piece is engaged with the transverse member of the temporary scaffold. On the other hand, the ladder pedestal is held by the holding piece, and the screw body is operated to bring the holding piece close to the locking piece side, and the ladder pedestal is attached to the side material of the temporary scaffold and the holding piece. Ladder fixing bracket, which is configured to be clamped between and fixed.

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