JPH0262658B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal receiving frame that protects the concrete surface when a metal gutter cover is used in a gutter cover support part for a drainage ditch or the like constructed mainly of concrete. .

Traditionally, metal gratings or cast iron gutter covers have been used as gutter covers for concrete side gutters or cross ditches installed for drainage on roads, etc.; In order to prevent damage to the concrete surface, an anchor bolt is attached to an L-shaped steel with two long pieces at right angles, and when forming the groove with concrete, it is formed into a stepped shape on the upper edge of the inner wall of the groove. It is attached so as to be attached to the groove cover holding part. However, the length of the receiving frame is generally manufactured to match the length of the groove cover, and the receiving frames are simply butt-aligned in series over the entire length of the groove. Therefore, the load and impact received by the gutter cover due to the passing of the vehicle will be transmitted only to the receiving frame that supports it. For this reason, measures must be taken to prevent the frame from moving due to loads or impacts, such as increasing the number of anchor bolts or fixing the anchor bolts to reinforcing bars in the concrete groove by welding, etc., for frames used in areas where vehicles often pass. However, over time, it was unavoidable that cracks would occur in the concrete at the contact points of the receiving frame, or that the receiving frame would separate from the concrete surface.

For this reason, the applicant of the present invention devised a method of attaching a locking metal fitting to the joint end of the receiving frame in order to eliminate such drawbacks, and proposed Utility Model Application No. 56-80620 and Utility Model Application No. 56-116135.
The present invention was developed by studying a simpler and more effective device, and will now be described with reference to the embodiments shown in the drawings.

That is, as shown in Figures 1 and 2, an L-shaped steel whose cross section is L-shaped for the lid placement part is cut to a predetermined length, and if necessary, anchor bolts are welded to the outer surface of the L-shaped steel. Attachment (abbreviated in the drawing)
The joint end of the receiving frame 1, that is, the two pieces 2 formed in an L-shape of the receiving frame 1 that are in contact with the consecutively installed receiving frame 1',
A plate-shaped locking piece 4 in the shape of a prism or square is attached to the outer surface of each piece 2, 3 of the receiving frame 1 on the end of the receiving frame 1 in parallel with the longitudinal direction of the receiving frame 1. One or two pieces are attached by welding 5 or the like, and are made to mesh with locking pieces 4' similarly attached to each piece 2', 3' of the successively installed receiving frame 1'.

That is, in one receiving frame 1, when one piece, for example piece 2, has one locking piece 4 protruding from one end, two locking pieces 4 are provided at the opposite end.
are provided in a protruding manner so that one locking piece engages between the two locking pieces when they are connected. In addition, in the other piece 3 of the receiving frame 1, when one locking piece 4 is provided protruding from the piece 2, it is preferable that two locking pieces 4 are provided protrudingly, but one end of the receiving frame 1 each piece 2,3
There is no problem with protruding one locking piece 4 at each end and two locking pieces protruding from the opposite end, or a combination of two and three locking pieces, but the number is limited. Not.

Since the present invention is constructed as described above, when the receiving frames 1 and 1' are arranged in series, the locking pieces 4 and 4' of the receiving frames 1 and 1' engage with each other, and each piece of the receiving frames 1 and 1' , 3, 2', and 3' have a locking piece 4 on the outer surface of each piece.
Since 4' is welded, all the force applied to the receiving frame 1 or 1' is transmitted to the adjacent receiving frame except for the force that tries to separate the receiving frames 1 and 1' in the direction opposite to the direction in which they meet. It has the advantage that it can be installed without damaging the concrete surface and without creating twists or steps.

As shown in FIG. 3, by connecting plate-shaped locking pieces 4 that are prismatic or rectangular to create an E-shaped locking fitting 6 bent at right angles, one metal fitting can hold the receiving frame 1. It can be used by attaching it to both ends of the tube, and it can be easily welded.

Further, the cross-sectional shape of the receiving frame 1 may be such that the cross-sectional shape of the lid placement part is L-shaped, and each piece 2, 3 of the receiving frame 1 has an L-shaped cross-sectional shape.
It can also be applied to objects whose cross-sectional shape is square or square, with a lip bent further from the sides, and can also be applied to lid holders for indoor wiring, piping pits, etc. etc. are useful.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partial perspective view showing the connecting portion of the receiving frame, FIG. 2 is a partial rear view showing how the receiving frame is connected, and FIG. It is a perspective view showing an example of this. 1, 1'... Receiving frame, 2, 2', 3, 3'... Piece (of the receiving frame), 4, 4'... Locking piece, 5... Welding part,
6...Latching metal fittings.

Claims (1)

[Claims] 1 Cut an L-shaped steel whose cross section is L-shaped for the lid placement part to a predetermined length, and if necessary, attach an anchor bolt to the outer surface of the L-shaped steel, etc., and attach the joint end of the receiving frame 1, that is, the receiving frame 1. A prismatic or rectangular plate-shaped locking piece 4 is attached to the end of the two pieces 2 and 3 formed in an L shape, and a plate-like locking piece 4 is attached to the outer surface of each piece 2 and 3 of the receiving frame 1.
At least one or two locking pieces 4' are attached so as to protrude from the ends in parallel with the longitudinal direction of the frame 1', and locking pieces 4' are similarly attached to each piece 2', 3' of the consecutively installed receiving frame 1'. A receiving frame for a groove cover, etc., characterized by being designed to mesh tightly.