JP2572268Y2 - Work scaffold - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work scaffold used at a construction site or a shipyard.

[0002]

2. Description of the Related Art As shown in FIG. 9, a work scaffold serving as a temporary work floor when a construction is performed at a construction site or the like is provided with a scaffold plate a and a steel G-shape at a required position of the scaffold plate a. It is composed of a plurality of steel pipe posts b which are detachably attached by a clamp tool c and erected, and a handrail d attached using each of the pipe posts b. The clamp device c includes a nut e fixed to the lower end of the pipe support b, a screw shaft f threaded through the nut e so as to be able to enter and exit from the lower end of the pipe support b, and an operating rod for inserting the operation rod. A rotating nut h having a through hole g and fixed to the lower end of the screw shaft f; and a lower end curved to form a lower end facing the lower surface of the rotating nut h, and an upper end formed at a lower end of the pipe support b. And a G-shaped metal fitting i to which is attached.
Here, j indicates a washer attached to the facing surface of the rotating nut h and the G-shaped bracket i.

When assembling a work scaffold, a washer j of a G-shaped clamp c provided at the lower end of a pipe support b.
In a state where the opening is widened, the clamp tool c is fitted into the scaffold plate a from the side, the operation rod is inserted into the through hole g of the rotation nut h, and the screw shaft f is integrally formed with the rotation nut h. , The screw shaft f is protruded downward, and a clamping force is applied to the scaffold plate a between the washers j to fix the pipe support b upright on the scaffold plate a. Bolt k
The handrail d is attached by using a special orthogonal clamp.

[0004]

However, in the case of the above-mentioned conventional working scaffold, since the steel pipe support b is provided with a steel clamp at the lower end thereof, the total weight of the pipe support b is 7 to 10 mm. 8 kg, which makes it difficult for the worker to transport on site, and when the pipe support b is attached to the scaffold plate a, it is tightened and fixed from the outside of the scaffold plate a. In order to prevent the pipe column b from coming off even when the gasket acts, a strong tightening force must be applied, and the G
It is necessary to have a considerably strong structure so that the shape fitting i is not damaged, and there is a problem that it is expensive. In addition, the above-mentioned tightening work requires rotating the nut h many times while the operator is sitting down. There is a problem that work efficiency is poor because the work is to be turned.

The present invention is intended to reduce the weight of a pipe support so that it can be easily transported and stored, and to facilitate the assembly work.

[0006]

According to the present invention, in order to solve the above-mentioned problems, the lower end of a pipe support is detachably attached to a plurality of locations of an installed scaffold plate, and a handrail is attached using each pipe support. In the working scaffold, the scaffold plate has a hollow structure composed of a girder material and front and rear face plate materials, and a supporting sleeve having an inner diameter slightly larger than an outer diameter of the pipe support is provided at a required position of the scaffold plate. A fixing pin is protruded and fixed inside the support sleeve by penetrating vertically, and a notch groove for fitting and locking the locking pin is provided at a lower end of the pipe support. It is configured to be provided.

Further, a configuration may be adopted in which the locking pin is provided on the pipe support side and the notch groove is provided on the support sleeve side.

Further, it is preferable that a plurality of notch grooves are provided in the circumferential direction, and a locking pin is provided at a position corresponding to the notch groove.

[0009]

When assembling the work scaffold, first, the scaffold boards are arranged side by side. At this time, the scaffold boards do not need to be held on both sides. Next, the lower end of the pipe support is dropped into the support sleeve on the scaffold plate side and turned. At this time, since the locking pin and the notch groove are locked between the support sleeve and the pipe support, the pipe support cannot be pulled upward. Thereby, the pipe support can be erected and fixed to the scaffold plate with one touch. Thereafter, it is easily assembled by attaching a handrail to the pipe support. When disassembling the work scaffold, after removing the handrail, the pipe support can be easily pulled out from the support sleeve by turning the pipe support in the opposite direction and pulling it upward, so that it can be easily removed.

When a plurality of notch grooves are provided at the plurality of positions and the locking pins are provided corresponding to the notch grooves, the pipe posts are locked at the plurality of positions, so that the pipe column is more reliably supported.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a first embodiment of the present invention, in which a scaffold plate 1 and a pipe support 2 are detachably erected at required positions of the scaffold plate 1 and handrails 3 are attached. In the working scaffold to be constructed, the scaffold plate 1 has a hollow structure including a required number of girder members 4 extending in the longitudinal direction (the direction of the arrow X) and front and back face plate members 6 attached above and below these girder members 4. A support sleeve 7 having an inner diameter slightly larger than the outer diameter of the pipe support 2 is provided at a required position in the longitudinal direction on one width end side of the scaffold plate 1 in a space 8 between the beam members 4. The upper and lower ends are opened to the front and back face plate members 6 so that the pipe support 2 can be inserted from either side of the front and back sides. The two auxiliary plates 9 arranged in the space 8 determine whether the longitudinal direction Welding and fixed by clamping, also in the vertical direction required height position of the support sleeve 7 is fixed to the cantilever so as to protrude the locking pin 10 radially inwardly.

On the other hand, at the lower end of the pipe support 2,
An inverted L-shaped notch groove 11 having a width capable of fitting the locking pin 10 is provided, and the lower end of the pipe support 2 is inserted into the support sleeve 7 and rotated to lock the locking pin 1 at the end of the notch groove 11.
By locking to 0, the pipe support 2 can be stood and fixed to the scaffold plate 1 without being pulled out upward.

Although FIGS. 1 and 2 show the case where two auxiliary plates 9 are arranged in front and rear to fix the support sleeve 7, for example, as shown in FIG. They may be provided at left and right positions, or may be provided at upper and lower positions of the support sleeve 7 as shown in FIG.

When assembling the work scaffold, first, the scaffold plate 1 and another scaffold plate are arranged side by side and supported at a work place. At this time, the arrangement of the scaffold plate 1 is not restricted to the front and back. Next, the lower end of the pipe support 2 is inserted into the support sleeve 7 of the scaffold plate 1 so as to be erected and fixed.
In this case, the pipe support 2 is dropped into the notch groove 11 at the lower end of the pipe support 2 so that the locking pin 10 protruding inside the support sleeve 7 is fitted. Is rotated in a predetermined direction (rightward direction in FIG. 1) so that the terminal end of the cutout groove 11 is locked by the locking pin 10. Thereby, the pipe support | pillar 2 can be made into the state which stood on the scaffold board 1 with one touch, and was fixed. After a while
The handrail 3 is attached to the pipe support 2 using a U bolt 5 or the like. When the work scaffold is disassembled and removed, the procedure may be reversed.

In the present invention, the pipe support 2 can be erected and fixed simply by dropping the pipe support 2 into the support sleeve 7 and rotating it. Since the scaffold plate 1 can be installed easily without being attached to the front and back surfaces, the workability can be greatly improved. Further, since the notch 11 is simply formed in the pipe support 2, it is advantageous in terms of cost and weight as compared with a conventional case where a G-shaped clamp is provided. It is extremely easy to transport and store. The weight of the pipe support 2 can be reduced to about 2 kg by making the pipe support 2 made of aluminum, which is 1/3 to that of a conventional steel pipe support combined with a steel clamp. Can be 1/4 the weight. Further, in the above, when the pipe support 2 or the support sleeve 7 is broken, it can be dealt with by replacing only the parts thereof, and there is an advantage that the repair cost can be reduced.

Next, FIG. 5 shows a second embodiment of the present invention. In the structure similar to that of the first embodiment shown in FIGS. The stop pin 10 is extended in the diameter direction, and the notch grooves 11 at the lower end of the pipe support 2 are provided at two locations facing each other in the circumferential direction, and the pipe support 2 is dropped into the support sleeve 7 and rotated. The notch groove 11 can be locked to the locking pin 10 at the same time.

FIG. 6 shows a third embodiment of the present invention. Similar to the first embodiment, the lower end of the pipe support 2 can be attached to and detached from the support sleeve 7 provided on the scaffold plate 1 side. In the configuration that can be inserted into the lower end of the pipe support 2, a locking pin 10 ′ that protrudes in the radial direction is provided on the outer surface of the lower end of the pipe support 2, and the upper end side and the lower end side (the upper end side in the figure) Only an L-shaped notch groove 11 'for receiving and locking the locking pin 10'.

FIG. 7 shows a fourth embodiment of the present invention. In the same construction as the third embodiment shown in FIG. 6, a locking pin 10 'on the outer surface of the lower end of the pipe support 2 is used. Two notches 11 'are provided in the upper and lower ends of the support sleeve 7 so as to correspond to the two locking pins 10' in the circumferential direction. Things.

In the second, third, and fourth embodiments shown in FIGS. 5, 6, and 7, the same functions and effects as those of the first embodiment can be obtained. In particular, in the case of the embodiment shown in FIGS. 5 and 7, the two notched grooves which are opposed to each other in the circumferential direction are locked by the locking pins, so that the supporting force of the pipe support 2 can be more surely increased. can do.

Next, FIG. 8 shows a fifth embodiment of the present invention, which is arranged in the space 8 of the scaffold 1 in the same configuration as the first, second, third or fourth embodiment. The support sleeve 7 is directly welded and fixed to the beam 4 and the face plate 6.

In the case of the fifth embodiment shown in FIG. 8, the auxiliary plate 9 can be omitted.

[0023]

[0024]

In each of the above embodiments, the support sleeve 7
Although the end face of FIG. 7 is matched with the level of the face plate 6 of the scaffold plate 1, for example, as shown by a two-dot chain line in FIG. In this case, the supporting force of the pipe support 2 can be further increased, and the number of locking pins or cutout grooves provided on the support sleeve 7 and the pipe support 2 in the circumferential direction may be further increased. It goes without saying that various changes can be made without departing from the spirit of the present invention.

[0026]

As described above, according to the working scaffold of the present invention, the scaffold plate is formed as a hollow structure composed of the girder material and the front and back face plate materials, and is fixed to the scaffold plate by vertically penetrating the scaffold plate. By dropping the lower end of the pipe support into the sleeve and locking the notch groove to the locking pin, the pipe support can be attached to the scaffold plate from one side or the other with one touch. The board can be erected without being caught by the front and back, and the scaffold assembling work can be performed easily and efficiently, and the workability can be improved, and the burden on the worker can be reduced. Since there is no conventional G-shaped clamp on the pipe support, the structure can be made simple, lightweight and inexpensive.
It is also advantageous in terms of transportation and storage, and furthermore, by providing the notch grooves at a plurality of locations in the circumferential direction and providing locking pins corresponding thereto, the supporting force of the pipe column can be made more reliable. Demonstrate excellent effects such as.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outline of a first embodiment of a work scaffold of the present invention.

FIG. 2 is a schematic plan view of a scaffold plate.

FIG. 3 is a schematic view showing an example of an arrangement of an auxiliary plate used for fixing a support sleeve.

FIG. 4 is a schematic view showing another example of the arrangement of the auxiliary plate used for fixing the support sleeve.

FIG. 5 is a schematic view showing a second embodiment of the present invention.

FIG. 6 is a schematic view showing a third embodiment of the present invention.

FIG. 7 is a schematic view showing a fourth embodiment of the present invention.

FIG. 8 is a schematic view of a scaffold according to a fifth embodiment of the present invention.

FIG. 9 is a schematic diagram showing an example of a conventional work scaffold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scaffold board 2 Pipe support 3 Handrail 4 Girder material 6 Face plate material 7 Support sleeve 10, 10 'Locking pin 11, 11' Notch groove

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaki Kobayashi 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Inside Furukawa Aluminum Industry Co., Ltd. (56) References Fully open 60-170452 (JP, U) Fully open Akira 52-136427 (JP, U) Actual opening 58-130547 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04G 5/08 E04G 1/26 E04G 3/04-3 / 08

Claims (3)

(57) [Scope of request for utility model registration] 1. A work scaffold wherein a lower end of a pipe support is detachably attached to a plurality of positions of an installed scaffold plate, and a handrail is attached using each pipe support. As a hollow structure consisting of a face plate material, a supporting sleeve having an inner diameter slightly larger than the outer diameter of the pipe support is fixed at a required position of the scaffold plate by vertically penetrating the supporting sleeve, and inside the supporting sleeve. A work scaffold comprising: a lock pin protruding; and a notch groove for fitting and locking the lock pin at a lower end portion of the pipe support. 2. A work scaffold wherein a lower end of a pipe support is detachably attached to a plurality of places of an erect scaffold plate and a handrail is attached using each pipe support. A supporting sleeve having an inner diameter slightly larger than the outer diameter of the pipe support is fixed to a required position of the scaffold plate by vertically penetrating the support sleeve at a required position of the scaffold plate, and a lower end portion of the pipe support. A work scaffold characterized in that a locking pin protrudes outside, and a notch groove for fitting and locking the locking pin is provided on the upper and lower ends of the support sleeve. 3. A notch groove is provided at a plurality of positions in a circumferential direction, and a locking pin is provided at a position corresponding to the notch groove.
Working scaffold as described.