KR200251971Y1 - Ladder laid a wall of construction - Google Patents

Abstract

The present invention relates to a buried ladder fixedly installed on a underground concrete structure or a wall of a building, such as a manhole buried in the ground, buried ladder that is fixed to the handle footrest 51 is fitted to the buried anchor 31 embedded in the concrete structure In the buried holder 31 is the connection frame 33 and the two fixed pipes in the state that one end of the fixed pipe 41 is fitted into the pipe fixing hole 35 formed at both ends of the connecting frame 33, respectively ( 41 is welded, a plurality of grip rings 43 are inserted into and fixed in the fixing pipe 41, and the square panel 45 is welded to the other end of the fixing pipe 41.

Description

Ladder laid a wall of construction}

The present invention relates to a buried ladder and a construction method thereof is fixedly installed on the wall of underground concrete structures or buildings, such as a manhole buried in the ground, and more particularly relates to a buried ladder that can be installed without damaging the formwork.

Korean Utility Model Registration Application No. 98-18922 (filed Sep. 29, 1998) introduces 'Ladder fitting for ladder installation', and Korean Utility Model Registration Application No. 99-28126 (Applied Dec. 14, 1999) Removable wall fixing ladder 'is introduced, and' Laying Ladder and its installation method 'are introduced in Korean Patent Application No. 20-39146 (filed July 7, 2000).

In the case of the conventional buried ladder (1) mentioned above, as shown in Figure 1, the nut fastening portion 5 formed at the end of the buried anchor 3 is protruded from the wall 11 of the structure, the nut fastening The handle scaffold 15 is fastened to the buried fixture 3 by the portion 5.

However, in order to install the conventional buried ladder (1), because the nut fastening portion 5 of the buried fixing rod (3) must be punched in the formwork 13 so as to project outward from the formwork (13) can be used repeatedly There is a problem that the formwork must be used once and disposed of.

Accordingly, an object of the present invention is to provide a buried ladder that is easy to install, can be installed without a hole in the formwork to prevent waste of formwork.

The present invention for achieving the above object is in the buried ladder is fixed to the buried scaffold to be embedded in the buried fixed to the concrete structure, the buried guide is one end of the fixed pipe to each of the pipe fixing holes formed at both ends of the connection frame The connecting frame and the two fixed pipes are welded in a fitted state, and a plurality of grip rings are inserted and fixed in the fixed pipes, respectively, and a square panel is welded to the other end of the fixed pipe.

The connecting frame is characterized in that the fastening hole is formed to fasten the nail.

The grip ring is fastened to the groove of the handle scaffold is formed by the claw in one direction, but can be inserted into the handle scaffold, it is characterized in that for fixing in one direction can not remove the handle scaffold in the opposite direction.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a cross-sectional view showing a state in which a conventional buried ladder is fixed to the wall of the structure

2 is a perspective view showing a buried ladder according to the present invention

3 is an exploded perspective view showing a buried ladder according to the present invention

4 is a cross-sectional view showing a state in which the buried ladder according to the present invention is mounted on the wall of the structure

Figure 5 is an enlarged detailed view showing a state in which the handle scaffold is mounted on the buried holder by the grip ring

6a to 6c is a schematic diagram showing the construction method of the buried ladder according to the present invention

Figure 7 is a schematic diagram showing an example of the construction of the buried anchor according to the present invention manhole

* Description of Signs of Main Parts of Drawings *

21: buried ladder 31: landfill

33: connection frame 41: fixed pipe

43: grip ring 45: square panel

51: footrest 71: formwork

Referring to Figure 2, the buried ladder 21 according to the present invention is fixed to the handle footrest 51 is fitted to the buried fixture 31 embedded in the concrete structure.

Referring to FIG. 3, the buried fixing rod 31 is connected to the connecting frame 33 and two in a state in which one end of the fixing pipe 41 is fitted into the pipe fixing hole 35 formed at both ends of the connecting frame 33, respectively. The fixed pipe 41 is welded, a plurality of grip rings 43 are inserted into and fixed in the fixed pipe 41, and the square panel 45 is welded to the other end of the fixed pipe 41.

In the buried fixture 31, when the connecting frame 33 and the two fixed pipes 41 are welded to each other, the end of the fixed pipe 41 does not protrude from the connecting frame 33.

The connection frame 33 is formed with a fastening hole 37 to which nails (not shown) are fastened.

4 and 5, the grip ring 43 has a claw formed in one direction and is fastened to the groove 53 of the handle scaffold 51 to move the handle scaffold 51 in the direction of an arrow 61. Can be inserted into but is fixed in one direction can not pull the handle footrest 51 in the opposite direction of the arrow (61).

The buried ladder configured as described above is constructed as follows.

As shown in FIG. 6A, the nails 49 are fixed to the molds 71 by fastening the nails 49 to the fastening holes 37 of the fixing frame 33 so that the front surface of the fixing frame 33 is in close contact with the inner surface of the formwork 71. After that, the concrete 73 is poured to remove the formwork 71 when the concrete is cured. Thereby, as shown in FIG. 6B, the hollow hole 47 formed in the fixing pipe 41 of the buried fixing table 33 is exposed to the outside. Thereafter, as shown in FIG. 6C, after the silicon 75 is injected into the exposed hollow hole 47, the handle scaffold 51 is embedded by inserting the handle scaffold 51 as illustrated in FIG. 4. Fixes to the holder 31. As a result, the groove 53 formed in the handle scaffold 51 is fastened to the grip ring 43 so that the handle scaffold 51 is fixed to the buried stand 33, and the handle scaffold 51 is made of silicon 75. ) Is not shaken in the buried fixing (33).

In this manner, the buried ladder 21 may be installed in a wall of an underground structure or a ground structure such as a manhole as illustrated in FIG. 7.

As described above, the buried ladder according to the present invention is easy to install, and can be installed without drilling holes in the formwork, thereby preventing the waste of formwork.

Claims (3)

In the buried ladder is fixed to the handle footrest 51 is fitted to the buried fixture 31 embedded in the concrete structure, The buried holder 31 has a connection frame 33 and two fixing pipes 41 in a state in which one end of the fixing pipe 41 is fitted into a pipe fixing hole 35 formed at both ends of the connecting frame 33, respectively. And a plurality of grip rings (43) are inserted and fixed in the fixed pipe (41), and the square panel (45) is welded to the other end of the fixed pipe (41). The method of claim 1, The connecting frame 33 is a buried ladder, characterized in that the fastening hole 37 is formed to fasten the nail. The method of claim 1, The grip ring 43 is a claw is formed in one direction is fastened to the groove 53 of the handle scaffold 51 can be inserted into the handle scaffold 51, but in one direction the handle scaffold 51 can not be removed in the opposite direction The buried ladder characterized in that it is for fixing.