JP2721116B2 - Tunnel excavator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel excavator, and more particularly to a tunnel excavator for collecting dust generated during tunnel excavation.

[0002]

2. Description of the Related Art Conventionally, dust generated during excavation by a tunnel excavator has been removed by using a ventilation equipment in a tunnel represented by a dust collector or a contra-machine separately provided from the excavator.

[0003]

Since the conventional dust collector is installed several meters to several tens meters behind the face, a large-capacity dust collector is required to perform a predetermined dust collection. In addition, the installation position also needs to be advanced according to the excavation situation, and the work is troublesome.

Further, in a ventilation facility such as a contra-machine, it is difficult to rapidly remove dust generated in the vicinity of a face due to a ventilation capacity, and there is a delay of several tens of minutes or more from generation of dust. This had an adverse effect on face workers.

It is an object of the present invention to provide a dust trap type tunnel excavator that collects dust at a face with high efficiency.

[0006]

A tunnel excavator according to the present invention is provided with an excavator equipped with a dust trapping attachment surrounding a rock drilling head and a dust collector connected to the dust trapping attachment via a hose. The dust confinement attachment includes a substrate to which a hose is connected, a plurality of elastic and self-supporting rods erected from the periphery of the substrate, and a telescopic frame for connecting the ends of these rods. And a stretchable film stretched between the substrate, the rod and the stretchable frame.

[0007] The tunnel excavator according to the present invention comprises:
An excavator is equipped with a dust confinement attachment that covers around a rock drilling head, and a dust collector connected to the dust confinement attachment via a hose, wherein the dust confinement attachment includes a substrate connected to a hose, and the substrate And a plurality of elongate bags having elasticity attached to the periphery of the elongate bag, and internal pressure adjusting means for adjusting the internal pressure of these elongate bags.

[0008]

Further, the internal pressure adjusting means comprises a blower.

[0010] The internal pressure adjusting means comprises a pump.

[0011]

In the tunnel excavator constructed as described above, at the time of excavation, the dust confinement attachment opening edge is pressed against the face rock wall to confine the dust generated by excavation in a local space in the attachment, and From the dust collector to collect dust.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a tunnel excavator generally indicated by reference numeral A includes an excavator, for example, a breaker 1 and a dust confinement attachment indicated by reference numeral 10 that entirely surrounds a breaker portion 2 of the excavator 1. The attachment 10 includes a dust collector 5 mounted on the breaker 1 connected via a dust collection port 3 and a hose 4.

In FIG. 2, the dust confinement attachment 10 is fixed to the base 2a of the
A rectangular substrate 11 (FIG. 1), a plurality of (eight in the illustrated example, four corners and intermediate portions) rods 12 erected from the periphery of the substrate 11, It comprises a stretchable frame 13 connecting the ends, and a stretchable film 14 stretched between the periphery of the substrate 11, the rod 12 and the stretchable frame 13.

The rod 12 is made of an elastic and self-supporting material such as hard rubber or vinyl.

Next, the operation will be described.

When excavating, as shown in FIGS. 1 and 2,
When the rock face B of the face is rocked by the breaker unit 2, in the illustrated example of the attachment 10, the upper rod body 12 bends according to the shape of the rock wall B, and the stretchable frame 13 and the stretchable film body 14 also extend accordingly. The telescopic frame 13 is deformed and the rock wall B
Almost adhere to. Therefore, the generated dust D is confined in the local space C defined by the attachment 10 and the rock wall B. Then, the dust is sucked and collected from the dust collection port 3 to the dust collector 5 via the hose 4.

FIG. 4 shows another embodiment of the present invention, in which a dust confinement attachment 20 comprises a substrate 21 and its substrate 2.
This is an example comprising a plurality of long bag bodies 22 attached to the peripheral portion of a single unit, a hose 23 for supplying air to the bag body 22, and a blower (not shown) serving as an internal pressure adjusting means connected to the hose 23. . The long bag body 22 is formed of an elastic material such as hard rubber or vinyl. In this embodiment, the internal pressure of the long bag body 22 is adjusted by the supply air, the long bag body 22 is made to stand on its own, and its end abuts against the rock wall B.
Similar to FIG. 3, the local space C is defined and the dust D is confined. The internal pressure adjusting means is not limited to the blower, but may be an oil or a pump for supplying the oil.

FIG. 5 also shows another embodiment of the present invention, wherein a dust confinement attachment 30 comprises a substrate 31 and its
A long and wide bag 32 similar to the long bag 22 (eight in the illustrated example) is attached to one peripheral portion, and the other portions are configured substantially in the same manner as FIG. This embodiment also has the same operation and effect as FIG.

[0020]

Since the present invention is configured as described above, the generated dust is confined in the local space defined by the dust confinement attachment near the breaker, and the dust collection effect is greatly increased. And the working environment can be improved.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of the present invention.

FIG. 2 is a perspective view showing the dust containment attachment of FIG. 1;

FIG. 3 is a side sectional view showing a state at the time of excavation in FIG. 2;

FIG. 4 is a perspective view showing a dust containment attachment according to another embodiment of the present invention.

FIG. 5 is a perspective view showing a dust containment attachment according to another embodiment of the present invention.

[Explanation of symbols]

 A: Tunnel excavator B: Rock face of the face C: Local space D: Dust 1: Breaker 2: Breaker 2a: Base 3: Dust collecting port 4 ... Hose 5 ... Dust collector 10,20,30 ... Dust trapping attachment 11,21,31 ... Substrate 12 ... Bar 13 ... Expansion frame 14 ... Expansion film 22 ... Long bag 23 ... Hose 32 ... Long wide bag

Claims (4)

(57) [Claims] An excavator is equipped with a dust trapping attachment for covering around a rock drilling head and a dust collector connected to the dust trapping attachment via a hose, wherein the dust trapping attachment is connected to a hose. A substrate, a plurality of rods having elasticity and self-supporting standing upright from a peripheral edge of the substrate, a telescopic frame connecting end portions of these rods, and the substrate, the rod, and the telescopic frame. A tunnel excavator characterized by comprising a stretchable membrane stretched over a tunnel. 2. An excavator is provided with a dust trapping attachment for covering around a rock drilling head and a dust collector connected to the dust trapping attachment via a hose, wherein the dust trapping attachment is connected to a hose. A tunnel excavator comprising: a substrate; a plurality of elongated bags having elasticity attached to a peripheral portion of the substrate; and internal pressure adjusting means for adjusting an internal pressure of the elongated bags. 3. The tunnel excavator according to claim 2, wherein the internal pressure adjusting means comprises a blower. 4. The tunnel excavator according to claim 2, wherein the internal pressure adjusting means comprises a pump.