JP2829712B2 - Scaffold support frame - Google Patents

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 drainage on a retaining wall such as a concrete pouring wall, a masonry wall or a concrete block wall for retaining a soil. The present invention relates to a scaffold support frame used for making a working scaffold.

[0002]

2. Description of the Related Art Conventionally, various types of scaffold support frames of this kind have been manufactured and used. However, most of them are of a type in which a frame for a scaffold is assembled on the front surface of a retaining wall, and a support frame for a scaffold is attached to the assembled frame.
However, the present applicant has already proposed, manufactured and sold a scaffold support frame for making a scaffold using a drainage pipe to which the present invention is applied.

A scaffold supporting frame utilizing a drainage pipe according to the present applicant's manufacture and sale is obtained by fitting a rubber ring having a required width to a frame portion inserted into the drainage pipe. After the portion is inserted into the drainage pipe, the rubber ring is compressed in the axial direction to enlarge the diameter of the ring.

[0004]

However, in the case of this device, since the diameter of the rubber ring expands only slightly, the diameter of the rubber ring in the non-expanded state substantially coincides with the inner diameter of the drainage pipe. It was something that had to be kept large.

On the other hand, the drain pipe has an inner diameter of 50 to 1
Most of them have a diameter of 00mm. For safety reasons, it is necessary to use rubber ring diameters that match each pipe diameter, so for 50mm, 60mm, 70mm ...
It was necessary to manufacture many kinds of products. Further, there is a problem that the user has to select and use an optimum one necessary for each construction site.

Therefore, according to the present invention, there is no need to assemble a scaffolding frame as in a conventional scaffolding support frame in which a common scaffolding frame has to be assembled, and a scaffold can be immediately produced using a drain pipe. In order to solve the problems of the scaffold support frame and the conventional scaffold support frame using the drainage pipe, one type of support frame is used regardless of the diameter of the drainage pipe. An object of the present invention is to provide a support frame using a drainage pipe, which can provide safe and secure support.

[0007]

In order to achieve the above object, the present invention takes the following technical measures. That is, in the support frame according to the present invention, the second frame 2 is opened with respect to the cylindrical first frame 1 around the connection shaft 3 on the front end side via the angle adjustment rod 4 on the rear end side. A scaffold support frame formed so that the angle can be adjusted to be wide and narrow and fixed, and an end portion of the cylindrical first frame body 1 extended to a tip side from a connection portion of the connection shaft 3.
And an upper surface of the extended end is opened, and two links 12a and 12b rotatably connected via a pivot 11 at an intermediate portion crossing the opening 17.
Are accommodated so as to be able to protrude and retract, and a lower end of each of the links is a long hole 1 formed in the first frame 1 along the axial direction thereof.
5, 15 are slidably held, and a contact member 13 is formed at the upper end of each link.
The distal end of a telescopic adjustment rod 14 that penetrates the inside of the cylinder of the first frame is connected to a, and the link is made to protrude and retract from the opening by the operation of the telescopic adjustment rod 14.

[0008]

Since the present invention has such a structure, the nut 15 screwed to the outwardly projecting portion of the telescopic adjustment rod 14 is rotated from the state shown in FIG. When the key is pushed, the links 12a and 12b rise to each other and change to a posture of FIG. Therefore,
In the link storage position shown in FIG.
As shown in the figure, the first frame 1 is inserted into a drainage pipe P provided on a retaining wall A such as a concrete pouring wall, a masonry wall, or a concrete block wall for embankment, and protrudes to the rear end side of the first frame 1. By rotating the nut 15 screwed to the threaded portion of the telescopic adjusting rod 14, the links 12 a and 12 b rise, so that the contact body 13 at the link upper end is pressed against the inner surface of the pipe P and fixed. Is done.

Therefore, the scaffold support frame of the present invention can be used regardless of the diameter of the drainage pipe, so that it can be used at any site where the drainage pipe is provided. It is possible to cope with only the types of support frames. 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 it is attached to and detached from the drain pipe, and it is easy to attach and detach, and the link part projects outside when not in use. Damage can be prevented beforehand.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a first embodiment of the present invention, in which a U-shaped fitting 5 fixed to the distal end side of a first frame 1 formed of a circular tube has a U-shape. A front end of the second frame 2 formed of a channel material is fixed with the connecting shaft 3 as a pivot, and a rear end fitting 6 and a pivot 7 are provided on the rear end side of the first frame 1.
The upper end side of the bolt-shaped angle adjusting rod 4 pivotally supported so as to be able to change the elevation angle is passed through the rear end side of the second frame 2 and is supported by upper and lower nuts 8,8. By rotating, the second frame 2 is formed so as to be able to adjust the widening and narrowing of the opening angle with respect to the first frame 1 about the connection shaft 3 so as to be freely fixed. Further, a pipe 9 for erecting a pole (not shown) for attaching a handrail is fixed to the upper surface of the rear end of the second frame 2 to form a scaffold plate attaching portion.

An upper surface of an end portion of the cylindrical first frame body 1 which is extended to the distal end side from a connecting portion of the connecting shaft 3 is opened, and an opening 17 is provided at an intermediate portion crossed with each other. Two links 12a and 12b rotatably connected via a pivot 11 are housed so as to be able to protrude and retract. The lower ends of the links 12a and 12b are slidably held through slide pins 16 and 16 in elongated holes 15 and 15 formed in the first frame 1 along the axial direction thereof. A contact body 13 is formed at the upper end. Further, one link 12a located on the near side (the right side in the figure) is connected to the connecting plate 1 by the distal end side of a telescopic adjustment rod 14 penetrating through the inside of the cylinder of the first frame 1.
8, a screw portion formed on the rear end side is projected outward from a hole (not shown) formed in the rear end fitting 6 of the first frame 1, and a nut 19 is formed. Is screwed. By rotating the nut, the telescopic adjustment rod 14 is moved so that the link is protruded and retracted from the opening 17.

In this manner, when the nut 15 screwed to the outwardly projecting portion of the telescopic adjustment rod 14 is rotated from the state shown in FIG. 3 and the telescopic adjustment rod 14 is pushed in, the links 12a and 12b are pushed. Change from one another to a standing posture, and the state shown in FIG. 1 is obtained in FIG. Therefore, in the link storage posture of FIG. 3, the distal end portion of the first frame 1 is, as shown in FIG.
Expansion and contraction adjustment which is inserted into a drainage pipe P provided on a retaining wall A such as a concrete casting wall, a masonry wall, or a concrete block wall for retaining a soil, and protrudes to the rear end side of the first frame 1. Nut 1 screwed into the threaded part of rod 14
By rotating the link 5 to raise the links 12a and 12b, 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 2 to a horizontal posture. After doing so, the scaffold 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 fastened and fixed by, for example, a number line or the like. .

A contact body 13 formed at the upper end of the link
Is preferably formed of a somewhat elastic material such as hard rubber, but the material is not specified. 5 and 6
As shown by, one contact body 13 may be provided so as to be pivotally supported on one link via a pin 20 and to cover the upper end of the other link. In addition, the above-mentioned contact body 13 can also be formed integrally with each link.

Although the embodiments which are considered to be representative of the present invention have been described above, the present invention is not necessarily limited to only the structures of the embodiments, and has the above-mentioned constitutional requirements according to the present invention. The present invention achieves the object of the present invention and can be appropriately modified and implemented within the range having the following effects.

[0015]

As is apparent from the above description, according to the present invention, by operating the telescopic operating rod, the link is opened from the opening formed at the tip of the first frame inserted into the drain pipe. Since it is designed to stand up, it can be used with one kind of support frame regardless of the diameter of the drainage pipe, which is convenient, especially the link from the opening. Because it is a structure that protrudes and retracts, it can be stored in the cylinder of the first frame when it is attached to and detached from the drain pipe, and it is easy to attach and detach, and when not in use, the link part protrudes outside and damages it. There is a remarkable effect that it can be prevented beforehand. Also, wide open angle
A cylindrical first frame provided with a second frame which can be fixed and fixed in a narrow manner.
The above-mentioned removably housed in the extension end on the distal end side of the
Link is extended and retracted by a telescopic adjustment rod that passes through the inside of the first frame.
Since it is a structure to operate, in use, first
Insert the extension end of the frame into the drain pipe and operate the adjustment rod.
Make the link stand up, and set the angle of the second frame horizontally
Just adjust it and immediately place scaffold B on the second frame
And that the scaffold can be completed.
It has a remarkable effect.

[Brief description of the 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 use state.

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

FIG. 6 is an enlarged side view of the main part, showing a state in which the link is stored. .

[Explanation of symbols]

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

Claims (1)

(57) [Claims] An opening angle can be adjusted in a wide and narrow manner with respect to a cylindrical first frame body via a rear end side angle adjustment rod with a second frame body as an axis on a front end side connection shaft. A scaffold support frame that has been formed, wherein an end portion of the cylindrical first frame body 1 that extends toward the distal end side from a connection portion of the connection shaft 3 exists;
An upper surface of the extended end is opened, and two links 12a and 12b rotatably connected via a pivot 11 at a crossed intermediate portion are housed in the opening 17 so as to be able to protrude and retract. The lower end of each link is slidably held by long holes 15 formed in the first frame 1 along the axial direction, and the upper end of each link is provided with an abutment 13.
Is formed, and the distal end side of a telescopic adjustment rod 14 penetrating through the inside of the cylinder of the first frame body is connected to one link 12a,
A scaffold support frame having a structure in which the link is made to protrude and retract from an opening by a movement operation of the telescopic adjustment rod 14.