JPS603335A - Receiving frame such as trough lid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to the road crossing 14'#, ill 14jj
, relates to a receiving frame for a lid used for a water collection basin or a ventilation hole in an underground structure.

Cast iron covers and gratings made of steel plates assembled in a lattice pattern are used to cover ditches and ventilation holes in underground structures. If placed directly on a surface, there is a risk of abrasion and damage to the concrete surface, and the lid must be attached to the opening so that it can be opened and closed with bolts, nuts, etc.
1. Place a metal receiving frame such as steel on the lid mounting surface. −) Then,
Deposit and install. There are 1 universally available.

However, if the receiving frame is simply attached to the concrete surface, there is a risk of it peeling off at the joint surface with the concrete, so it is common practice to weld the anchor to the receiving frame and bury the anchor in the concrete. It is common practice to increase the number of anchors and secure them in place for receiving frames for ditch covers installed in cross-cutting ditches with particularly high traffic volumes.In addition, the receiving frames are made of metal or material such as L-shaped steel cut to the specified dimensions. , Anchors are welded at appropriate intervals on the contact surface with concrete, but when welding, 1+ outside the receiving frame! ! Since only the I and I parts are heated, even though the cross-sectional shape is L-shaped, which is difficult to deform, a 2 m long receiving frame will warp by 3 to 5 degrees. The limit is about 4 pieces, and welding is done using a boiling method that reduces heating as much as possible, but in order to prevent peeling at the welded part, warping could not be avoided. For this reason, when making a receiving frame using a material such as stainless steel, which is particularly prone to deformation, a method is used in which anchors are attached using screws, bolts, or nuts, and dovetail grooves are formed for fitting.

The present invention has been developed as a result of various studies on mounting methods in view of the current situation, and will be described in accordance with embodiments shown in the drawings.

That is, conventionally, as shown in Fig. 1.2, the anchor (2) (f) was brought into close contact with the outer wall surface of a metal receiving frame (1) having an L-shaped cross section, and the welding was performed at the contact part. Although the joint (3) is formed, the present invention has a cross-sectional shape of L.
In the letter-shaped metal receiving frame (1), a through hole (4) is bored in the vertical piece 0η as shown in Figure 3.4 or in the horizontal piece (6), and the anchor is inserted as shown in Figures 5 to 7. (2) through the hole (
4), and the receiving frame (1) and anchor (2) are welded at the cut surface (5) of the through hole (4) to form a welded joint (3).

Note that the receiving frame (1) is not a receiving frame for a gutter cover made of metal such as a long L-shaped pipe, but also a receiving frame for a gutter, a water catchment, a ventilation hole, an entrance of an underground structure, etc. made of L-shaped steel etc. assembled in a square shape. It can be applied not only to receiving frames for lids installed in buildings, etc., but also to various receiving frames attached to buildings made of stainless steel or other materials.

In addition, when using a round bar for the anchor (2), for example, as shown in Figure 3.4, the through hole (4) of the receiving frame (1) is drilled from the outer wall surface of the 0th vertical side to the inner wall surface. death.

If the horizontal piece of the receiving frame (1) is not drilled up to the cover mounting surface of the α-hole, when the round bar anchor (2) is fitted, the anchor (2) will be attached to the receiving frame (1) as shown in Figure 5. In addition, when welding, the cut surface (5) of the through hole (4) of the support frame (1) and the anchor (2) are welded so that the cut surface (5) does not protrude from the inner wall surface of the support frame. Welded joint (
3), and when welding the rectangular bar-shaped anchor (2'), as shown in Figure 7, the anchor (2') is inserted into the through hole (4).
) so that the cut surface (5) is visible from the inner wall surface, and if possible, the welded joint (3) is formed at the center of the cut surface (5). Also, although not shown, the welding between the receiving frame (1) and the anchor (2) is not just a vertical piece αυ;
A through hole may be provided in the horizontal piece 0 → (the piece on which the lid is placed),
Further, the through hole may be in the form of a slit that divides one piece.

The present invention is constructed as described above, and in particular, the welding of the receiving frame (1) and the anchor (2) is carried out through a through hole drilled in the vertical piece αη or the horizontal piece α of the receiving frame (1). Since the cutting is done at the center of the cutting surface (5) in (4), that is, the vertical piece, 0υ or horizontal piece (6), the heat during welding is applied to the center of the piece, and the metal receiving frame is The anchor can be welded without causing distortion.

1. Since the anchor is partially fitted into the receiving frame, there is a risk that the welded part may peel off due to impact even in areas with heavy traffic.Even if it peels off, it is easy to check the condition of the cyan anchor from the wall inside the receiving frame. Furthermore, the position of the anchor can be confirmed when raising the road level or replacing the support frame, so the support frame can be easily removed by breaking only a portion of the anchor, such as concrete. It has the following.

Note that the receiving frame has a lip formed from the upper side of the vertical piece or the edge of the horizontal piece, and the cross-sectional shape is 2-shaped or )-shaped, and various cross-sectional shapes used as metal receiving frames are available. Needless to say, it can be applied to
If the through hole is also provided in the form of a slit extending to the end, it is sufficient to connect the cut portion with an anchor so as to close it. , FIG. 1 is a partial perspective view showing a conventional example, FIG. 2 is a top view of an anchor welding part of another conventional example, FIG. 3 is a partial perspective view of the anchor of the present invention before attachment, and FIG. 4 is a third Fig. 5 is a partial perspective view showing the state in which the anchor is attached, Fig. 6 is a cross-sectional view taken along A-A 11i17 in Fig. 5, and Fig. 7 is a cross-sectional view of another embodiment. It is a front view.

1... Receiving frame, 2... Anchor, 3...Bath joint, 4...Through hole, 5...Cut surface, 1]...Vertical piece, 12...Horizontal piece.

Figure 6 Figure 7

Claims (1)

[Claims] In the metal receiving frame (1) having an L-shaped cross section,
A through hole (
4) Or provide a slit and insert the anchor (2) through the hole (4).
) or slit and welded at the through hole (4) or the cut surface (5) of the slit to form a welded joint (3) 0