JP2014122468A - Exterior wall damage prevention jig for scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exterior wall damage prevention jig for a scaffold for preventing an exterior wall of a building from being damaged in the case of disassembly by final removal implemented by suspending one scaffold unit with a crane.SOLUTION: An exterior wall damage prevention jig 11 for a scaffold is used in the case of disassembly by final removal in which an external scaffold installed along an exterior wall of a building is separated while being blocked into one scaffold unit including a plurality of building frames and the scaffold unit is suspended by a crane. A plurality of exterior wall damage prevention jigs 11 are mounted to the building frames of the scaffold unit facing the exterior wall of the building while being spaced apart from each other. The exterior wall damage prevention jig 11 comprises; an L-shaped bracket member 12 formed from a mount part 15 which is mounted to the building frame, and an arm part 13 extending from a distal end of the mount part 15; and a sphere hold member 14 provided in a distal end of the arm part 13 and holding a spherical elastic body 24 in a freely removable manner. A clamp 18 is provided in an upper portion of the mount part 15, and a forked receiving part 17 is formed in a lower portion of the mount part 15.

Description

  The present invention relates to an outer wall damage prevention jig of a scaffold, and more specifically, the scaffold is divided into blocks, and when a building is dismantled by a large payment by lifting one scaffold unit with a crane. The present invention relates to a scaffold outer wall damage prevention jig for preventing the outer wall from being damaged.

  When dismantling external scaffolds installed in buildings along the boundary of the site, it is often impossible to secure necessary spaces such as crane installation locations and material storage locations. In this case, when the scaffold is dismantled from the outside of the building, various restrictions and costs increase in terms of work processes and the like, such as the necessity of reporting road occupation.

  Therefore, dismantling work by large payment is performed by separating the external scaffolding into blocks and lifting one scaffolding unit having a multi-row / multi-stage building frame from the side where the building crane is installed with the crane. Selected.

  Japanese Utility Model Laid-Open No. 6-1610 discloses a device for pulling out a building frame used for dismantling work of a scaffold by large payment (see Patent Document 1).

Japanese Utility Model Publication No. 6-1610

  In the conventional dismantling work with large pay, there is a problem that when the scaffold unit is lifted with a crane, the scaffold may come into contact with the outer wall of the building due to the influence of strong winds, etc. doing.

  In particular, in the case of an external scaffold installed in a building along the boundary of the site, the scaffold unit cannot be lifted sufficiently away from the building, and thus more careful work is required.

  Therefore, in the dismantling work by large pay in the conventional example, when the scaffold unit is lifted with a crane, the problem that must be solved is to prevent the scaffold from being damaged even if it touches the outer wall of the building. Have.

  The gist of the present invention for solving the problems of the conventional example is that an external scaffold installed along an outer wall of a building is separated into a single scaffold unit having a plurality of building frames, and the scaffold unit is separated. A jig for preventing damage to an outer wall of a scaffold, which is used for dismantling work by large paying lifted by a crane and which is attached to the building frame facing the outer wall of the scaffold unit at a plurality of intervals. The damage prevention jig is provided with an L-shaped bracket member composed of an attachment portion attached to the building frame and an arm portion extending from the tip of the attachment portion, and rotates at the spherical elastic body provided at the tip of the arm portion. It is composed of a sphere holding member that is freely held, and a clamp for fixing to the building frame is provided at the upper part of the attachment part, and the building frame is branched into a bifurcated shape at the lower part of the attachment part. The holding part to hold is formed It is when.

The spherical body holding member includes a pedestal attached to the tip of the arm part, a holding part having a bifurcated holding piece that is rotatable with respect to the pedestal, and a shaft part that is provided across the holding pieces. A spherical elastic body through which the shaft portion is rotatably attached;
The arm is extendable;
Is included.

  According to the outer wall damage prevention jig of the scaffold according to the present invention, when the scaffold unit is lifted with a crane in the dismantling work by large payout, even if the scaffold contacts the outer wall of the building due to the influence of strong wind or the like, the spherical elastic Since the body plays the role of a cushioning material, it has an excellent effect that the outer wall of the building is not damaged.

  The spherical body holding member includes a pedestal attached to the tip of the arm portion, a holding portion that is rotatable with respect to the pedestal and includes a bifurcated holding piece, a shaft portion provided across the holding pieces, and the shaft The spherical elastic body that is rotatably mounted through the part penetrates the spherical elastic body even when the spherical elastic body is lifted while being in contact with the outer wall or when the scaffold unit is covered with a crosswind. Since the body and the pedestal rotate smoothly following the movement, there is an excellent effect that the outer wall is not damaged or soiled.

  Since the arm portion can be extended and contracted, the arm portion can be adjusted to an optimum length in consideration of the distance between the scaffold unit and the outer wall of the building.

It is a perspective view of the outer wall damage prevention jig | tool 11 of the scaffold based on this invention. It is the perspective view which separated and showed the bracket member 12 and the spherical body holding member 14. FIG. It is a perspective view which shows the attachment state of the outer wall damage prevention jig | tool 11. FIG. It is a perspective view of the scaffold unit 29 explaining the dismantling work by large payment.

  Next, embodiments of the present invention will be described with reference to the drawings. First, in FIG.1 and FIG.2, the code | symbol 11 shows the outer wall damage prevention jig | tool of a scaffold, This outer wall damage prevention jig | tool 11 is attached to the front-end | tip of the L-shaped bracket member 12 and the arm part 13 of the bracket member 12. FIG. It is comprised from the spherical body holding member 14 provided.

  The bracket member 12 includes a pipe-like attachment portion 15 attached to the building frame 28a, and a pipe-like arm portion 13 extending from the front end of the attachment portion 15 in the orthogonal direction.

  The attachment portion 15 is a portion to be attached along the building frame 28a. The attachment portion 15 is provided at a lower portion of the attachment portion 15 in a direction opposite to the extending direction of the arm portion 13 and branches into a bifurcated shape. The receiving part 17 of the role to hold | maintain is formed. A clamp 18 for fixing to the building frame 28 a is attached to the upper portion of the attachment portion 15. Further, in the middle of the attachment portion 15, a reinforcing reinforcement pipe 19 extending to the arm portion 13 is provided obliquely.

  The arm portion 13 has a short-diameter pipe 13b slidably inserted into a large-diameter pipe 13a. As a result, the arm portion 13 is formed to be extendable. A fixing screw 20 for fixing the position of the expanded and contracted short diameter pipe 13b is provided in the middle of the arm portion 13. The arm portion 13 having such a configuration can adjust the arm portion 13 to an optimum length in consideration of the distance between the scaffold unit 29 and the outer wall 30 of the building.

  The spherical body holding member 14 extends over the pedestal 21 attached to the distal end of the arm 13, the holding portion 22 that is rotatable with respect to the pedestal 21 and includes bifurcated holding pieces 22 a and 22 a, and the holding pieces 22 a and 22 a. The shaft portion 23 is provided, and a spherical elastic body 24 through which the shaft portion 23 is rotatably attached.

  A mounting bolt 25 is formed at the rear portion of the base 21, and the mounting bolt 25 is screwed into a bolt hole (not shown) formed at the tip of the arm portion 13 to attach the base 21 to the arm portion 13. .

  The holding portion 22 is configured to be able to smoothly rotate with respect to the pedestal 21 by a bearing mechanism (not shown).

  The shaft portion 23 is composed of an inner through bolt (full threaded rod) 23a and a steel actual tube 23b disposed on the outer side thereof. As a result, the spherical elastic body 24 can be smoothly rotated. ing. The shaft portion 23 is provided in an inserted state across both the holding pieces 22 a, and bolts 26 are screwed to both ends of the shaft portion 23.

  The spherical elastic body 24 is a rubber ball having an appropriate elasticity, and specifically, a soft ball No. 1 (about 85 mm in diameter) is desirable. Further, an eyelet 27 extending from the real tube 23b is provided in a shaft hole portion through which the shaft portion 23 of the spherical elastic body 24 passes.

  The sphere holding member 14 having such a structure can be improved to the sphere holding member 14 by processing a wheel of a flat carriage, for example.

  The scaffold outer wall damage prevention jig 11 configured as described above has an external scaffold installed along the outer wall 30 of a building, as shown in FIG. 4, as one scaffold unit 29 having a plurality of building frames 28. This is a jig used in the dismantling work by large paying that is performed by lifting the scaffold unit 29 with a crane and separating the block 29 from the building frame 28a facing the outer wall 30 of the scaffold unit 29. Install multiple units.

  As shown in FIG. 4, the outer wall damage prevention jig 11 is preferably attached at two positions on both ends of the lower building frame 28. Needless to say, it can be changed.

Next, how to use the outer wall damage prevention jig 11 at the work site and points to be noted will be described. First, the mounting bolt 25 of the base 21 is screwed into the bolt hole of the arm portion 13, and the spherical body holding member 14 is attached to the bracket member 12.
Before lifting the scaffold unit 29 with a crane, the outer wall damage prevention jig 11 is attached to an appropriate building frame 28a. Although it can be installed at any stage of operation, care must be taken not to damage the building.
When the connecting pin comes off, the scaffold unit 29 is carefully lifted with a crane as in the normal operation. At the time of lifting, it is always necessary for the signal person to be fully dedicated to signal the operator.

  When the scaffold unit 29 is lifted with a crane in the dismantling work by large pay, the outer wall damage prevention jig 11 is configured so that the spherical elastic body 24 is the cushioning material even if the scaffold contacts the outer wall 30 of the building due to the influence of strong winds or the like. Therefore, the outer wall 30 of the building is not damaged.

  Even when the spherical elastic body 24 is lifted while being in contact with the outer wall 30 or when the scaffold unit 29 is covered with a crosswind, the spherical elastic body 24 and the base 21 smoothly follow the movement. The outer wall 30 is not damaged or soiled.

DESCRIPTION OF SYMBOLS 11 Scaffold outer wall damage prevention jig 12 Bracket member 13 Arm part 13a Large diameter pipe 13b Short diameter pipe 14 Sphere holding member 15 Mounting part 17 Receiving part 18 Clamp 19 Reinforcement pipe 20 Fixing screw 21 Pedestal 22 Holding part 22a Holding piece 23 Shaft Part 23a Through bolt (all threaded rod)
23b Real steel pipe 24 Spherical elastic body 25 Mounting bolt 26 Bolt 27 Eyelet 28, 28a Building frame 29 Scaffolding unit 30 Outer wall

Claims (3)

The external scaffolding installed along the outer wall of the building is divided into a single scaffolding unit with a plurality of building frames, separated, and used for dismantling work by large paying that is performed by lifting the scaffolding unit with a crane. , A scaffold outer wall damage prevention jig to be attached to the building frame facing the outer wall of the scaffold unit at a plurality of intervals,
The outer wall damage prevention jig includes an L-shaped bracket member comprising an attachment portion attached to the building frame and an arm portion extending from the distal end of the attachment portion, and a spherical elastic body provided at the distal end of the arm portion. Consisting of a sphere holding member that rotatably holds
A clamp for adhering to the building frame is provided at the upper part of the mounting part, and a receiving part for branching into a bifurcated shape and holding the building frame is formed at the lower part of the mounting part. A jig for preventing damage to the outer wall of the scaffolding. The spherical body holding member includes a pedestal attached to the tip of the arm portion, a holding portion that is rotatable with respect to the pedestal and includes a bifurcated holding piece, a shaft portion provided across the holding pieces, and the shaft A jig for preventing damage to an outer wall of a scaffold according to claim 1, comprising: a spherical elastic body through which a portion passes and is rotatably attached. 2. The scaffold outer wall damage prevention jig according to claim 1, wherein the arm part is extendable and contractible.

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