JPS6034641B2 - Mat with top-shaped protrusions - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a mat that is laid on soft ground to form a material entry path for temporary construction work.

BACKGROUND OF THE INVENTION Conventionally, when forming a material entry path, a mat with a flat bottom surface is laid on the ground.

Problems to be Solved by the Invention However, this conventional mat cannot sufficiently suppress subsidence when a heavy object such as a car neck is loaded, and therefore, on soft ground, the unevenness of the material delivery road becomes large and becomes unstable. This prevents the wheels from moving smoothly and reduces material transport efficiency.

Therefore, an object of the present invention is to provide a mat that has sufficient sinkability and allows for the formation of a good access path.

Means for Solving the Problems The gist of the present invention will be explained below using reference numerals in the attached drawings. That's what happened.

In addition, in the second invention, a large number of top-shaped protrusions P that gradually increase in size are arranged in parallel on the lower surface of the mat main body a from the tip 1 to approximately the middle part 2, and from the middle part 2 to the rear end 3. There are many top-shaped protrusions P of the same size on the bottom surface of the mat body a.
′ were placed in parallel. In the first aspect of the invention, the weight of the mat with top-shaped projections m itself, the vertical load of the car face, etc. that the mat m receives, the ground reaction force and frictional resistance generated on the conical body 7 of the top-shaped projections P', In addition, when there is a cylindrical shaft chest 8, the combined force of the ground reaction force and frictional resistance generated in the cylindrical shaft 8 is balanced, and horizontal ground bearing capacity without uneven settlement or excessive subsidence is exerted.

In the second invention, in addition to the above-mentioned effect exhibited by the first invention, there is provided a substantially intermediate portion 2 from the tip 1 of the lower surface of the mat main body a.
Since a large number of top-shaped protrusions P that gradually increase in size are arranged in parallel, there is no excessive drop when the wheel 5 is rotated in the direction of the arrow v in FIG.
Car steel allows you to drive smoothly without experiencing any major shocks.

Embodiment The embodiment of the first invention shown in FIG. 4 and FIG.
In the second embodiment of the invention shown in FIGS. 2 and 3, anti-slip projections 4 are provided on the upper surface of the mat main body a over the entire surface.
Many are arranged side by side.

Therefore, the car steel 5 is prevented from idling, and the vehicle can smoothly enter the upper surface of the mat main body a. In each of the illustrated embodiments, the mat main body a and the top-shaped projections P, P' are integrally molded from a plastic material such as rubber or European plastic. It is also possible to manufacture the mat separately and attach the top-shaped projections P and P' to the lower surface of the mat main body a by adhesive or the like. Effects of the Invention As described above, in the first invention, the top-shaped protrusions P' arranged in parallel on the lower surface of the mat body a generate a large resistance against vertical loads and suppress the sinking of the mat m. Even in such cases, it is possible to easily form a material transport path that is resistant to subsidence and is highly stable, and the efficiency of transporting construction materials can be improved.

In the second invention, on the lower surface of the mat main body a, there are a number of top-shaped protrusions P that gradually increase in size from the tip 1 to approximately the middle part 2.
Since the wheels 5 are arranged in parallel, the resistance when the wheel 5 rides on the top surface of the mat m is reduced, and it is possible to smoothly ride the wheel 5 on the top surface of the mat m.

In addition, the installation and removal work of mat m is very easy.
Since the mat can be reused, it is possible to reduce the cost of forming an access path and the like.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of a mat with a top-shaped protrusion according to a second embodiment of the invention, and FIG. 2 is a plan view of the same mat, from the middle part to the rear end. A part of the figure has been omitted. FIG. 3 is a front view of the mat with top-shaped protrusions shown in FIG. 1 in use. FIG. 4 is a front view of the mat with top-shaped protrusions according to the first embodiment of the invention, with a portion from the middle portion to the rear end portion being omitted. a... Mat body, P, P'... Top-shaped protrusion, m.... ...Matt, 1...Tip of the mat, 2...Middle part of the mat, 3...Rear end of the mat, 4...
- Anti-slip protrusion, 5...wheel, 6...ground, 7...conical body, 8...cylindrical shaft leg. 31 boxes of bamboo blinds and hair drawings *4 drawings

Claims (1)

[Scope of Claims] 1. A mat with top-shaped protrusions, comprising a mat body a and a large number of top-shaped protrusions P' arranged in parallel on the lower surface of the mat body a. 2 A mat main body a, a large number of top-shaped protrusions P that are arranged side by side on the lower surface of the mat main body a from the tip 1 to approximately the middle part 2, and which gradually increase in size toward the middle part 2, and from the middle part 2. A mat with a top-shaped projection consisting of a large number of top-shaped projections P' of the same size arranged in parallel on the lower surface of the mat main body a up to the rear end 3.