JPS6011994Y2 - grating - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a prefabricated grating that can be firmly assembled by only extremely simple processing means without using welding means.

In general, gratings that are fitted onto road openings are assembled after each of the grating plates, lattice frames, and reinforcing crosspieces are assembled to withstand the loads caused by the running of automobiles, etc. The parts are firmly integrated by welding, but in the case of gratings made of light metals such as aluminum so that they can be easily removed when cleaning the grooves, a special welding machine is required and the welding process takes a long time. There was a drawback that processing costs were high.

However, in order to eliminate and solve the above-mentioned drawbacks, the present invention has developed a grating that can be easily manufactured without using any welding work, and with only crimping and fitting work, and the strength is the same as that of welding. The specific structure of the grating according to the present invention will be explained below with reference to the illustrated embodiments.

That is, holes 21 are formed in a pair of lattice frames 2 at both ends of a plurality of flat lattice plates 1 in which through holes 11 in the shape of two triangles are shifted vertically are formed.・2□、21・・
・Fit and swage each hole into the hole 1□.
The crosspieces 3 having squeezed juice 31.3□ extending along a triangular shape and having cuts 3□...32 formed at each interval of the lattice plates are inserted through the grid plates 1...1 in parallel. Hole 11...1□
The notches 32...3□ are fitted into the respective grid plates 1...1.

Next, in accordance with the above structure of the present invention, the method of assembling the grating of the present invention as well as its functions and effects will be explained with reference to the illustrated embodiments.

That is, the lattice plates 1 and 2 are inserted into the holes 21...2□ of one lattice frame 2.
After fitting and caulking the protrusion at one end of 1...1, fit the hole 2□...21 of the other lattice frame 2 into the protrusion at the other end of the lattice plate 1...1. Secure with caulking.

This allows the lattice plate and the lattice frame to be integrated.

Next, the crosspieces 3 are commonly inserted into the lower part of the through holes 11 drilled in each lattice plate 1, and the notches 32 and 32 in the top pieces of the crosspieces 3 are inserted.
. . 32 coincides with each of the lattice plates 1 . . . , the crosspiece 3 is struck so that the notches bite into the lattice plates.

At this time, the squeezed juices 31, 31 of the crosspiece 3 move while being compressed inward by the lower slope of the through hole 11, but when the cuts 32...3□ cut into the lattice plates 1...1 The squeezed juice 31, 3□ has moved to the upper part of the through hole 1□, and the force that pushes it inward is gone, so it spreads along the upper slope of the through hole 1□ due to the restoring force. Since the lower end of the squeezed juice 31.3t rests on the stepped portion 1□3 formed when punching, even if you try to push the crosspiece 3 in the opposite direction, that is, downward, this squeezed portion and stepped portion Movement is prevented by the engagement of , and removal is prevented.

In other words, the crosspiece 3 loses its degree of freedom vertically, horizontally, and
It is in a state that it is fixed to the lattice plate 1...1, and this crosspiece 3
By installing the grating plate and the grating frame, the grating plate and the grating frame are fixed in a fixed shape, that is, a rectangular shape, and the grating is completed.

As mentioned above, according to the grating according to the present invention,
Both ends of each lattice plate are fitted into the holes of a pair of lattice frames and caulked, and a column material with juice is inserted into the deformed hole drilled in each lattice plate, and the notch at the upper end is inserted into the lattice plate. It can be firmly assembled by simply punching it into the grating, and unlike conventional gratings, there is no need to weld each member individually.It is not only an extremely simple process and can be manufactured in a short time, but also the outermost The lattice plates also serve as the outer frame of the grating, so if you manufacture a long grating, no matter what length of grating is ordered, the lattice frame and pillar materials can be cut according to the length. If you manufacture several types of long gratings with different widths, that is, different lengths of the lattice plates, you can deliver them on the same day in response to orders, which is convenient and has great practical effects. be.

Note that in the case of a narrow grating, a single crosspiece in the center can be sufficient for reinforcement as in this example, but in the case of a wide grating, two or three of the above-mentioned through holes are newly added to the grating plate, It is only necessary to attach the same number of pillar materials.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is an exploded perspective view of the grating of the present invention, FIG. 2 is a perspective view of the same in an assembled state, and FIG. 3 is a view taken along line A-A in FIG. FIG. 1... Lattice plate, 11... Through hole, 2...
... Lattice plate, 3 ... Crosspiece, 31 ...
・Juice extraction, 3□・・・・・・cut.

Claims (1)

[Scope of utility model registration request] Holes 21...21 are made in a pair of lattice frames 2, 2 at both ends of a plurality of flat lattice plates 1...1 in which through-holes 11 in the shape of two triangles are shifted up and down. ,21...21
A crosspiece 3 that is fitted into and caulked to each other, has juice 3□, 31 that spreads along the triangular shape of the through hole 11, and has cuts 32...32 formed at each interval of the lattice plate. are commonly inserted into the through holes 1□...11 of the parallel grid plates 1...1, and the notches 32...3□ are fitted into each of the grid plates 1...1. grating.