JPH08291621A - Scaffold-supporting frame - Google Patents

Abstract

PURPOSE: To safely support a scaffold using only one kind of supporting frame independent of the size of a diameter of a drainage pipe. CONSTITUTION: In a scaffold-supporting frame which is so formed that an open angle of a second frame 2 to be turned around a connecting pin 3 at the top end side thereof to a cylindrical first frame 1 can be adjustably fastened through an angle-adjusting rod 4 at the rear side thereof, the top surface of the end part of the cylindrical first frame 1, which part is extended from a connection part for the connecting pin 3 thereon toward the top end side thereof, is opened. In this opened part 17, two links 12a, 12b, which are crossed at intermediate parts thereof and are rotatably connected with each other through a pivot 11, are stored so as to enable their coming in and out. The lower ends of these links each are slidably held in slotted holes 15, 15 formed on the first frame 1 parallel thereto and contact members 13 each are formed on the top ends of these links. Furthermore, the top end side of an expansion and contraction- adjusting rod 14 passing through the inside of the cylindrical first frame 1, and the links are allowed to come in-and-out at the opened part 17 with the operation of moving the adjusting rod 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes a drainage pipe provided for draining a retaining wall such as a concrete placing wall for earth retaining, a masonry wall or a concrete block laying wall. The present invention relates to a scaffold support frame used for making a scaffold for work.

[0002]

2. Description of the Related Art Conventionally, various kinds of scaffolding support frames of this kind have been manufactured and used. However, most of them are of a type in which a frame for scaffolding is assembled on the front surface of the retaining wall and a supporting frame for scaffolding is attached to this frame.
However, the present applicant has already proposed, manufactured and sold the scaffolding support frame for forming scaffolds using the water draining pipe, which is the object of the present invention.

The scaffolding support frame using the water draining pipe manufactured and sold by the applicant of the present invention is a scaffolding support frame in which a rubber ring having a required width is fitted to a frame portion to be inserted into the water draining pipe. After inserting the portion into the drainage pipe, this rubber ring is axially compressed to expand the diameter of the ring.

[0004]

However, in the case of this device, since the diameter of the rubber ring is slightly increased, the diameter of the rubber ring in the non-expanded state is substantially equal to the inner diameter of the drainage pipe. It had to be of a size.

On the other hand, the drainage pipe has an inner diameter of 50 to 1
Most of them are 00mm, and it is necessary to use rubber ring diameters that match each pipe diameter for safety reasons. Therefore, for 50mm, 60mm, 70mm ...
It was necessary to manufacture a large number of different types. In addition, the user has a problem that he or she has to select and use the optimum one required for each construction site.

Therefore, according to the present invention, it is not necessary to assemble the scaffolding frame as in the conventional scaffolding frame, which is required to assemble the conventional general scaffolding frame, and the scaffold can be immediately formed by using the drainage pipe. In order to solve the problem of the scaffolding support frame which is also a conventional scaffolding support frame using a drainage pipe, one type of support frame is used regardless of the diameter of the drainage pipe. It is intended to provide a support frame using a water draining pipe that can be safely supported by.

[0007]

In order to achieve the object, the present invention takes the following technical means. That is, in the support frame according to the present invention, the second frame body 2 is opened with respect to the cylindrical first frame body 1 via the connecting shaft 3 on the front end side through the angle adjusting rod 4 on the rear end side. It is a scaffolding support frame formed so that its angle can be adjusted to be wide and narrow, and an upper surface of an end portion of the tubular first frame body 1 that is extended to a front end side from a connecting portion of the connecting shaft 3 is opened. The two links 12a, 12b rotatably connected to each other through the pivot 11 at the intermediate portion crossing the opening 17 are retractably housed, and the lower ends of the respective links are the first frame. Slidingly held in elongated holes 15, 15 formed in the body 1 along its axial direction, an abutting body 13 is formed at the upper end of each link, and one link 12a has a first The tip end side of the expansion and contraction adjusting rod 14 penetrating the inside of the frame body is connected, so that the expansion and contraction adjusting rod 14 can be moved. Is obtained by a structure infested the link from the opening I.

[0008]

The present invention has such a structure. Therefore, from the state shown in FIG. 3, the nut 15 screwed to the outward projecting portion of the expansion / contraction adjusting rod 14 is rotated to rotate the expansion / contraction adjusting rod 14. When is pushed in, the links 12a and 12b change to a standing posture, and the state shown in FIG. 2 is obtained. Therefore,
In the link storage posture shown in FIG. 3, the tip portion of the first frame 1 is shown in FIG.
As shown in, it is inserted into a draining pipe P provided on a retaining wall A such as a concrete pouring wall for earth stoppage, a masonry wall or a concrete block masonry wall, and protrudes to the rear end side of the first frame body 1. By rotating the nut 15 screwed onto the threaded portion of the telescopic adjustment rod 14 thus set up to raise the links 12a and 12b, the contact body 13 at the upper end of the link is pressed against the inner surface of the pipe P and fixed. To be done.

Therefore, the scaffolding support frame of the present invention can be used regardless of the diameter of the water drainage pipe, so that it can be used at any site where the water drainage pipe is provided. It can be supported only by the type of support frame. In addition, since the link has a structure that protrudes and retracts from the opening, it can be stored in the cylinder of the first frame when attaching to or detaching from the drain pipe, and it is easy to attach and detach. It is possible to prevent damage caused by damage.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views showing a first embodiment of the present invention, in which a U-shaped metal member is attached to a U-shaped metal fitting 5 fixed to the tip side of a first frame 1 formed of a circular pipe. The front end of the second frame body 2 formed of the channel material is fixed with the connecting shaft 3 as the pivot shaft, and the rear end fitting 6 and the pivot shaft 7 are provided on the rear end side of the first frame body 1.
An upper end side of a bolt-shaped angle adjusting rod 4 pivotally supported by an elevation angle is pierced to a rear end side of the second frame body 2 and supported by upper and lower nuts 8 and 8. By pivoting, the second frame 2 is formed so that the opening angle can be adjusted wide and narrow with respect to the first frame 1 with the connecting shaft 3 as an axis. Further, a scaffolding plate mounting portion is formed by fixing a pipe 9 for standing a pole (not shown) for mounting a handrail to the upper surface of the rear end of the second frame body 2.

An upper surface of an end portion of the first cylindrical frame 1 extending toward the tip side of the connecting portion of the connecting shaft 3 is opened, and an opening 17 is formed at an intermediate portion crossing each other. Two links 12a and 12b, which are rotatably connected via a pivot 11, are retractably housed. The lower ends of the links 12a and 12b are slidably held in the elongated holes 15 and 15 formed in the first frame body 1 along the axial direction thereof via the slide pins 16 and 16, respectively. A contact body 13 is formed at the upper end. Further, the distal end side of the expansion and contraction adjusting rod 14 penetrating the inside of the cylinder of the first frame 1 to the one link 12a located on the front side (right side in the drawing) is the connecting plate 1.
The threaded portion formed on the rear end side of the nut 19 is connected to the rear end of the first frame body 1 through the hole (not shown) formed in the rear end metal fitting 6 and protrudes outwardly. Are screwed together. Then, by rotating the nut, the expansion and contraction adjusting rod 14 is moved so that the link is projected and retracted from the opening 17.

By doing so, the nut 15 screwed into the outwardly projecting portion of the expansion / contraction adjusting rod 14 from the state shown in FIG. 3 is rotated and the expansion / contraction adjusting rod 14 is pushed in, whereby the links 12a, 12b. Change to a standing posture, and the state shown in FIG. 1 is obtained in FIG. Therefore, in the link storage posture of FIG. 3, as shown in FIG. 4, the tip portion of the first frame 1 is
Expansion and contraction adjustment that is inserted into the water draining pipe P provided on the retaining wall A such as a concrete pouring wall for earth stop, masonry wall, concrete block masonry wall, etc. Nut 1 screwed onto the threaded portion of rod 14.
By rotating 5 to make the links 12a and 12b stand up, the contact body 13 at the upper end of the link is pressed against and fixed to the inner surface of the pipe P. Further, the nut 8 of the angle adjusting rod 4 is adjusted to bring the second frame body 2 into a horizontal posture. After doing this, the scaffolding plate B is placed on the second frame 2 and the second frame of the adjacent scaffolding frame fixed in the same manner as described above, and is fixed by tightening, for example, a numbered wire or the like. .

A contact body 13 formed at the upper end of the link.
Is preferably made of a material having some elasticity such as hard rubber, but the material is not specified. 5 and 6
As shown in, one contact body 13 may be pivotally supported by one of the links via the pin 20 so as to cover the upper end of the other link. The abutment body 13 described above can be formed integrally with each link.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and is provided with the above-mentioned constitutional requirements of the present invention, and The present invention can be carried out by appropriately modifying it within a range that achieves the object of the present invention and has the following effects.

[0015]

As is apparent from the above description, the present invention operates the telescopic operating rod so that the link is opened from the opening opened at the tip of the first frame body inserted into the drainage pipe. Since it is configured to stand up, it is convenient because it can be used with one type of support frame regardless of the diameter of the drainage pipe, and in particular, the link from the opening Since it has a retractable structure, it can be stored in the cylinder of the first frame when attaching to and detaching from the drainage pipe, and it is easy to attach and detach.In addition, when not in use, the link part may be projected outside and damaged. There is a remarkable effect that it can be prevented. There is no fear of

[Brief description of drawings]

FIG. 1 is an overall side view showing a first embodiment of a support frame according to the present invention.

FIG. 2 is an enlarged perspective view of the main part.

FIG. 3 is a side view of the main part.

FIG. 4 is a sectional view showing a usage state.

FIG. 5 is an enlarged side view of an essential part showing a second embodiment, showing a link startup state.

FIG. 6 is an enlarged side view of the main part of the same, showing a link storage state. .

[Explanation of symbols]

 (1) First frame (2) Second frame (3) Connecting shaft (4) Angle adjustment rod (11) Axis (12a) (12b) Link (13) Abutment body (14) Expansion and contraction rod (15) ) Slot (17) Opening

Claims (1)

[Claims] 1. A wide and narrow opening angle can be fixedly fixed to a cylindrical first frame body 1 by using a second frame body 2 with a connecting shaft 3 on the front end side as an axis and an angle adjusting rod 4 on the rear end side. In the scaffolding support frame that is formed, the upper surface of the end portion of the tubular first frame body 1 that extends toward the tip side of the connecting portion of the connecting shaft 3 is open, and the opening 17 And two links 1 rotatably connected to each other via a pivot 11 at a crossed intermediate portion.
2a and 12b are housed so as to be retractable, and the lower ends of the respective links are slidably held in long holes 15 and 15 formed in the first frame 1 along the axial direction thereof. An abutment body 13 is formed at the upper end of each of the first and second links 12a.
A scaffolding support frame having a structure in which the distal end side of 4 is connected, and the link is projected and retracted from the opening by a movement operation of the expansion and contraction adjusting rod 14.