JP2000017834A - Temporary scaffolding bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such a safe temporary scaffolding bracket as a latching state of a clamp latch for latching a scaffolding board is not unlatched in the case a locking arm is sprung up. SOLUTION: A bar-shaped body having a specific length is bent in an approximately U-shape to form a clamp latch 38. While, an open-hole 39 is bored into the circumference of a free end in a locking arm 16, and one end of the clamp latch 38 is made to pass through the open-hole 39 in a state capable of freely going in and out. A compression spring 40 is provided to one end of the clamp latch 38 passing through the inside of the locking arm 16, and it is energized in the direction for the other end of the clamp latch 38 to go in the locking arm 16. An open-hole 42 is bored in the circumference of the free end section of the locking arm 16, and the other end of the clamp latch 38 is capable of freely going in and out of the open-hole 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a placket which can be lifted and retracted with a scaffold attached so as not to hinder the work such as painting or tiling of an outer wall of a building. In particular, the present invention relates to a temporary scaffolding bracket that can prevent a scaffold plate that has been bridged over a bracket when the scaffold is flipped up.

[0002]

2. Description of the Related Art In the construction work of a building, as shown in FIG. 10, a temporary scaffold is formed by stacking a plurality of scaffold frames A in the vicinity of the building in accordance with the height of the building. At this time, although the scaffold frame A is stacked near the building, a gap may be formed between the scaffold frame A and the building. In this case, the temporary scaffold bracket 1 is prepared. The bracket 1 is attached to the building of the scaffolding frame A by the fixture 3 provided on the support member 2 of the bracket 1, and the adjacent bracket 1
A scaffold plate B is stretched between the locking arms 4 to form a scaffold for preventing fall in a gap between the scaffold frame A and the building.

[0003] When performing work such as painting or tiling of the outer wall of a building, the scaffolding plate B bridged between the brackets 1 may hinder the work, and may be difficult to perform.
When the locking arm 4 of the bracket 1 for locking the scaffold plate B is made rotatable with respect to the support member 2 to hinder the work, the locking arm is held while the scaffold plate B is stretched. 4 is raised to secure a working space.

At this time, as shown in FIG. 9, a substantially U-shaped clamp fastener 5 is attached to the tip of the locking arm 4 so that the scaffold plate B which has jumped up does not come off from the locking arm 4.
In the axial direction of the locking arm 4 and
When the locking arm 4 is in a submerged state, the locking arm 4 is rotatable along the outer peripheral portion thereof. Something has been proposed to keep it.

[0005]

However, in the above-described conventional clamp, when the locking arm is flipped up while the scaffold is hung, the own weight of the scaffold plate is applied to the clamp by the locking arm. In the axial direction of the arm, and depending on the situation, the clamp is in a submerged state and can rotate along the outer periphery of the locking arm, and when a horizontal force is applied thereto, the state of the clamp is stopped. It may be canceled.

In view of the above, the present invention provides a safe temporary scaffolding bracket which does not release the clamped state of the clamp for holding the scaffold plate when the locking arm is flipped up. That is the task.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a temporary scaffolding bracket in which a locking arm for locking a scaffold plate is attached to a support member provided with means for attaching to a scaffold frame. In the above, a bar-like body having a predetermined length is bent into a substantially U-shape to form a clamp, which is hooked to a clamp of a scaffold plate, and one end of the clamp is attached to a free end of the locking arm. The other end of the clamp fastener is urged in a direction in which the other end of the clamp is submerged into the locking arm by interposing a spring into and out of the through hole formed in the outer peripheral portion. A through hole is provided in the outer peripheral portion of the free end of the arm so that the other end of the clamp fastener is immersed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In a bracket for a temporary scaffold according to the present invention, when a locking arm with a clamp of a scaffolding plate is flipped up by a clamp, the clamp is horizontally moved. Although it is possible to protrude and retract, it does not move in the vertical direction. Therefore, even if the self-weight of the scaffold plate is vertically applied to the clamp by the clamp, the hook of the clamp is not released from the clamp. .

[0009]

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

First, a description will be given with reference to FIGS.
Reference numeral 10 denotes a bracket according to the present invention, in which a column member 11 composed of a square pipe having a predetermined length is used as a vertical member.
2 are fixed by bolts and nuts 13. At the upper end of the support member 11, a rotating member 14 having a substantially U-shaped cross section and a predetermined length is positioned so that its concave portion fits into the support member 11, and a bolt 15 is passed through near the upper portion thereof. The rotation member 14 is rotatably mounted on the shaft.

At the lower end of the rotating member 14, a locking arm 16, which is a horizontal member for locking the scaffold plate B, is fixed at a right angle to the rotating member 14. The arm 16 is held horizontally by abutting the fixed rotating member 14 against the column member 11 and the rotating member 1
4 and a structure in which the bolt 15 can be pivoted upward and flipped up about a shaft attachment portion of the bolt 15.

The locking arm 16 is connected to the outer tube 17 by the outer tube 1.
The inner tube 18 having a diameter slightly smaller than 7 is inserted and made to be freely retractable. As shown in FIGS. 4 and 5, both sides of the inner tube 18 are located at a predetermined distance from the base end to the distal end side. A guide groove 19 for making the inner pipe material 18 protrude and retract from the outer pipe material 17 by pressing the inner pipe material 18 straight down by pressing toward the tip end side.
Is formed. By forming the guide grooves 19 by depressing both side surfaces of the inner tube 18 in this manner, the section modulus of the inner tube 18 does not have to be much lower than that of the original inner tube before processing. .

On the other hand, a projection 20 which fits into the guide groove 19 of the inner tube 18 is formed at a predetermined position on the inner surface of the outer tube 17 by press working. The press forming of the projection 20 may be performed after the inner pipe 18 is attached to the outer pipe 17. A nut 21 is fixed to the lower end of the outer tube 17, and a bolt 22 is screwed into the nut 21 so that the outer tube 17 penetrates. The tube 18 is fixed at an arbitrary position.

An engaging member 23 for engaging and fixing the rotating member 14 is provided in the vicinity of the shaft attachment portion of the rotating member 14.
There is provided an engaging means comprising a tension spring 24 for attracting the pulley 3. The engaging body 23 has a bar-like body formed in a spiral shape and is substantially rotatable. One side of the upper part of the engaging body 23 is attached to a pipe 25 fixed to a side surface of the support member 11 and is rotatably mounted. Then, the engaging body 23 is urged to be pulled toward the support member 11 by a tension spring 24 attached to a shaft 26 fixed to the support column 11.

The upper edge of the rotating member 14 has a substantially circular arc shape so that the lower side 23a of the engaging body 23 can rotate while contacting when the locking arm 16 is flipped up. The lower edge 2 of the engagement body 23 is located at the center of the upper edge.
The lower side 23a of the engaging body 23 fits in the engaging hole 27 when the locking arm 16 is flipped up and the rotating member 14 is leveled. The locking arm 16 can be held in a flipped up state.

A projecting piece 28 is fixed to the lower surface of the outer tube member 17 near the free end, and one end of a reinforcing member 29 is rotatably mounted on the projecting piece 28 by a bolt / nut 30. . When the outer tube 17 is positioned in a horizontal state, the reinforcing member 29 has a free end portion which is not restrained when the outer tube 17 is located in a horizontal state. It is a length appropriate for its role.

One end of a connecting member 31 is rotatably mounted on a free end side of the reinforcing member 29 by bolts and nuts 32, and the other end of the connecting member 31 is attached to a side surface of the column member 11. The projecting piece 33 is rotatably mounted on the projecting piece 33 by a bolt / nut 34 to form a reinforcing diagonal member having a link mechanism structure. The connecting member 31 has such a length that when the outer tube member 17 is flipped up, the connecting member 31 can be turned to a substantially vertical state in combination with the reinforcing member 29 constituting the link mechanism.

Further, a locking member 35 for locking the unrestricted free end of the reinforcing member 29 for supporting the outer tube member 17 is fixed to the column member 11, and the fixing position is such that the outer tube member 17 is positioned downward. The free end of the reinforcing member 29 forming the link mechanism is guided by the connecting member 31 when it is turned to a horizontal state, and moves along an arc-shaped movement locus to be finally located. It is a side surface of the support member 11.

Further, a collar body 36 for locking a scaffold plate B having an outer diameter substantially the same as that of the outer pipe material 17 is fitted and fixed to the tip of the inner pipe material 18, and the scaffold is fixed when the scaffold plate B is locked. A slip stopper 37 for preventing the plate B from slipping along the locking arm 16 is fixed.

Further, as shown in FIG. 6, the collar body 36 is provided with a clamp fitting 38 for hooking the clamp of the scaffold plate B when the scaffold plate B is locked.

The clamp member 38 is formed by bending a rod-like body into a substantially U-shape, one end of which is long and the other end of which is short, and the longer end of which penetrates the inner pipe 18 from the collar body 36. The compression spring 40 is inserted and penetrated through the through-hole 39 pierced and formed, and the upper end of the compression spring 40 interposed in the inner pipe 18 is brought into contact with the upper part of the inner surface of the inner pipe 18. The lower end is received by the pressing pin 41 inserted into the clamp fitting 38 so that the clamp fitting 38 can be freely protruded and retracted from the through hole 39, and the shorter end of the clamp fitting 38 is located inside the collar body 36. The clamp fitting 38 is urged in the direction of sinking into. Further, a through hole 42 is formed in the collar body 36 so that the longer end of the clamp fitting 38 protrudes and protrudes, and the other end of the shorter clamp protrudes.

Next, a method of using the bracket having the above structure will be described with reference to FIGS.

First, as shown in FIG. 8 (a), the bracket 10 is attached to the scaffold frame A of the temporary scaffold via the fixture 12, and the outer pipe 17 containing the inner pipe 18 is integrated with the rotating member 14 by its own weight. When the rotation member 14 is rotated downward around the bolt 15 serving as a shaft attachment portion, the rotation member 14 having a substantially U-shaped cross section comes into contact with the support member 11 to hold the locking arm 16 in a horizontal state. At this time, the unrestricted free end of the reinforcing member 29 axially attached to the outer pipe member 17 is guided by the connecting member 31 and locked by the locking member 35 provided on the column member 11. The free end of the reinforcing member 29 functions as a reinforcing diagonal member that supports the outer pipe member 17 from below without being displaced by being restricted by the connecting member 31.

Next, the scaffold plate B is laid between the adjacent brackets 10 attached to the scaffold frame A of the temporary scaffold. If the space between the scaffold frame A and the wall of the building is wide, the scaffold plate B is used for locking. The bolt 22 at the lower end of the outer tube 17 constituting the arm is loosened to pull out the inner tube 18 from the outer tube 17.

A guide groove 19 is formed on both side surfaces of the inner pipe member 18, and a projection 20 that fits into the guide groove 19 protrudes from the inner peripheral surface of the outer pipe member 17. The guide groove 19 is drawn out without being rotated by being restricted by the protruding portion 20, and the guide groove 19 is formed at a predetermined distance from the base end of the inner pipe 18 to the distal end side.
Does not stop at the end of the guide groove 19 and come off.

As described above, after the inner pipe 18 is pulled out, the bolt 22 is screwed in, the inner pipe 18 is pressed and fixed, and the scaffold plate B is laid across the inner pipe 18 and the outer pipe 17 to form a scaffold. is there.

When the outer wall of the building is to be painted or tiled, the scaffolding plate B supported by the brackets 10 becomes an obstacle, and as shown in FIGS. 8B and 8C, the scaffolding plate B is used. With the B attached, the locking arm 16 is flipped upward.

At this time, the turning member 14 to which the outer pipe member 17 is integrally fixed is turned upward around the bolt 15 of the shaft attachment portion, and accordingly, as shown in FIG. The upper edge portion 14 rotates so as to push the lower side 23a of the engagement body 23, and when the rotation member 14 becomes horizontal as shown in FIG. Is fixed to the lower side 23a.

Further, the scaffold plate B is fixed with the clamp fitting 38 so that the scaffold plate B does not fall off from the bracket 10. The operation method of the clamp fastener 38 is as follows. When locking to
As shown by the imaginary line in FIG. 7, the clamp fastener 38 is lifted upward against the compression spring 40 and then rotated to a position where it does not hinder the locking of the scaffold plate B.

Then, when the scaffold B is hung over the bracket 10, the clamp 38 is rotated again to the original position, and the tip of the clamp 38 is fitted into the through hole 42 formed in the collar 36. To complete the hanging. As described above, if the clamp member 38 is hung on the clamp of the scaffold plate B, even if the weight of the scaffold plate B acts on the clamp member 38 in the vertical direction when the bracket 10 is flipped up, the clamp member 38 may be used. Does not move in the vertical direction, the hanging is not released, and the flipped scaffold B does not fall off.

[0031]

As described above, in the bracket for a temporary scaffold according to the present invention, one end of a clamp having a rod-like body having a predetermined length bent into a substantially U-shape is connected to the play of the locking arm. In addition to being fitted into a through hole formed in the outer peripheral portion of the end portion so as to be able to freely come and go, a spring is interposed to urge the other end of the clamp fitting in a direction to sink into the locking arm. Since a through hole is formed in the outer peripheral portion of the free end of the locking arm so that the other end of the clamp is immersed, when the locking arm is flipped up, the weight of the scaffold plate is applied to the clamp. Since the clamp is not easily released even in the vertical direction, there is no danger that the scaffolding plate hung over the locking arm will fall off.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a temporary scaffold bracket according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is an enlarged sectional view taken along line CC of FIG. 1;

FIG. 5 is a partially cutaway sectional view of a distal end portion of an outer tube material.

FIG. 6 is a partially cutaway sectional view of a distal end portion of an inner pipe material.

FIG. 7 is a view for explaining the operation of a clamp at the tip of a locking arm.

FIG. 8 is a diagram illustrating the operation of the bracket.

FIG. 9 is a partial cross-sectional view corresponding to FIG. 6 of a conventional bracket.

FIG. 10 is an explanatory diagram showing a usage state of a conventional bracket.

[Description of sign]

DESCRIPTION OF SYMBOLS 10 ... Bracket 11 ... Prop material 12 ... Mounting bracket 14 ... Rotating member 15 ... Bolt 16 ... Locking arm 17 ... Outer tube material 18 ... Inner tube material 19 ... Guide groove 20 ... Projection part 23 ... Engagement body 24 ... Tension spring 27 ... engagement hole 29 ... reinforcement material 31 ... connecting material 35 ... locking body 36 ... collar body 38 ... clamp fastener 39 ... through hole 40 ... compression spring 41 ... pressing pin 42 ... through hole

Claims (1)

[Claims] 1. A temporary scaffolding bracket in which a locking arm for locking a scaffold plate is attached to a support member having means for attaching to a scaffolding frame, wherein a rod-shaped body having a predetermined length is bent into a substantially U-shape. To form a clamp fastener to be hung on the clamp of the scaffold plate, and one end of the clamp fastener is removably fitted into a through hole formed through an outer peripheral portion of the free end of the locking arm, The other end of the clamp is urged in a direction to sink into the locking arm by interposing a spring, and the other end of the clamp is attached to the outer periphery of the free end of the locking arm. A bracket for a temporary scaffold, wherein a through hole for immersing the part is provided.