JPH0452309Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mount which is fixed by pressing the base of each brush which is connected to and fixed to the inner periphery of the tail portion of a tunnel excavating machine.

The block brushes of conventional excavators are simply fixed by abutting both sides of the mounts of each brush against each other.

However, such a construction has the disadvantage that muddy water generated during excavation enters through the connecting gaps between the respective fittings, gradually travels to each brush, and finally flows into the buried pipe.

Therefore, in order to eliminate the above disadvantage,
No. 31,838, a device is known in which opposing steps are provided on both sides of each mount and the steps are engaged to prevent muddy water from entering.

However, since the connecting gap of this type is not linear but bent, it is much harder to penetrate than the former, but if there is high pressure water or a large amount of water, it is inevitable that it will penetrate, and it will also be a hassle to construct. However, it also has the disadvantage of being expensive.

In order to eliminate the above-mentioned conventional disadvantages, this project proposes the following extremely simple yet effective device.

That is, as shown in the drawing, a brush 1 made of a metal wire such as stainless steel and the bases of the inner and outer protection plates 2 and 3 overlapped with the inner and outer surfaces of the brush 1 are integrally pressed and fixed together by a clamp P. Sponge-like packings 5, 5' made of silicone or the like that swell due to water absorption are made to protrude left and right on both sides of the machine and attached to each side with strong adhesive or the like, and 6 in the figure indicates the tail part of the excavator. .

Since the present invention is constructed as described above, when each block brush 1 is connected and fixed to the periphery of the tail portion of the excavator using its respective fittings 4, both sides of each fitting 4 are elastically adhered to by the sponge-like packings 5, 5'. This ensures that the gaps between them are closed, thereby eliminating the risk of muddy water entering.

However, in the present invention, since the packings 5 and 5' are elastically attached to each other as described above, both sides of the mounting bracket 4 are machined to be particularly close to each other, or each concave and convex engaging portion is machined as in the above-mentioned known example. Since there is no need to form a block brush, the block brush has the practical advantage of being mass-produced at a low cost, and is a simple yet extremely advantageous design for a block brush for this type of excavator.

[Brief explanation of the drawing]

Figure 1 is a side view of the block brush according to the present invention, Figure 2 is a plan view of the same as above, and Figure 3 is a front view of a part of the block brush as seen from the tunnel tunneling machine side, showing the state in which it is connected to the circumference of the tail part of the tunnel tunneling machine. It is. 1 is a brush, 4 is a mounting bracket, and 5 and 5' are sponge-like packing.

Claims (1)

[Scope of utility model registration request] On both sides of each mounting bracket of the brush that is connected and fixed along the circumference of the tail part of the tunnel boring machine,
A block brush for closing the gap between a tunnel excavator and a buried pipe, which is attached with sponge-like packing made of a material that swells when it absorbs water and protrudes from the left and right sides.