JPS595119Y2 - Tunnel excavation soil removal device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a tunnel excavation soil removal device.

Conventionally, as a method for transporting excavated material to the outside of a tunnel floor, a belt conveyor or a trolley is used in a side shaft, and a packet crane or a packet elevator is used in a vertical shaft.

However, this conventional method has the disadvantage that a large-sized transport device must be introduced into the mine, which greatly impairs workability and safety.

In addition, this conventional method requires intermittent transport (particularly in the pressurized air method, as it is necessary to open and close material locks to allow the trolley to pass), and the excavated soil needs to be temporarily stored or reloaded during transport. However, the disadvantage is that the ability to carry out excavated soil tends to be inferior to the excavation capacity.

Therefore, the present invention solves the above-mentioned drawbacks by transporting the excavated material using a wind blowing method (neumatic conveyor), and also by making it possible to connect the operation of the excavator and the operation of the unloading device. This allows excavated soil to be directly transported outside the mine.

Hereinafter, the present invention will be explained with reference to embodiments shown in the accompanying drawings.

In the figure, A is the tunnel being excavated (hereinafter referred to as the lateral shaft), B is the floor surface of the lateral shaft, and 1 is the excavator.

3 is a belt conveyor connected to excavator 1;
The length of one of the air pipes 4, which will be described later, is L.
Excavated soil can be transported to the rear.

Note that the excavator 1 is usually equipped with a discharge device 6 such as a screw conveyor that discharges the excavated material immediately after the excavator 1, and the belt conveyor 3 is disposed below the discharge port of this discharge device 6. ing.

10 is an excavated soil cutting device that cuts the excavated soil conveyed by the belt conveyor 3 into the air pipe 4.

This excavation upper cutting device 10 is mounted on a base 14 having rolling wheels 15, 15, and can be placed on the floor surface B at an appropriate location behind the excavator 1 and below the belt conveyor 3. As shown most clearly in Figure 3, its structure has an excavated soil inlet 11 at the top, a cut 13 opening into the air pipe 4 at the bottom, and a cut hole 13 in the middle. The section is equipped with a conveying device 12 that conveys the excavated soil from the input port 11 to the incision 13 while maintaining an airtight state such as a rotary blade.

A scraper 5 is disposed on the belt conveyor 3 and causes the excavated soil on the belt conveyor 3 to fall into the input port 13 of the excavated soil cutting device 10.

This scraper 5 is attached to an arm erected from the base 14, so that it can be fixed on the floor surface B together with the excavated soil cutting device 10.

The scraper 5 may be mounted on an arm erected on a base (not shown) separate from the base 14, or the angle at which it traverses the belt conveyor 3 may be adjustable.

Reference numeral 4 denotes an air blowing pipe, which is formed by connecting steel pipes of a predetermined length (one length L), and has one end connected to a compressed air source (not shown). It is folded back, and its tip is connected to a separator outside the mine (a cyclone or the like that separates the pressurized air from the excavated soil, not shown).

Next, the operation of this embodiment will be explained.

First, it is assumed that the tunnel A is further dug by the excavator 1 from the state shown in FIG.

The excavated soil is conveyed rearward by a belt conveyor 3 and scraped into an excavated soil cutting device 10 by a scraper 5.

Then, the excavated material introduced into the excavated material cutting device 10 is
It is cut into the wind pipe 4, guided through the wind pipe 4 by compressed air for blowing, and carried out of the mine.

In addition, along with excavation, excavator 1 and belt conveyor 3
Although the excavated soil cutting device 10 and the air pipe 4 connected thereto are fixed in a fixed position, and the scraper 5 is also fixed in a fixed position, the rear end of the belt conveyor 3 moves forward. The excavated soil is reliably fed into the excavated soil cutting device 10 until it is moved onto the cutting device 10.

Therefore, although the proposed device uses a belt conveyor 3 at the start end of the excavation excavated by the excavator 1, most of the excavation is carried out by the wind pipe 4, so a long belt conveyor is used inside the mine. There is no need to arrange multiple tiers of trolleys, and the use of dangerous trolleys is also eliminated, resulting in a completely new work environment.

In addition, even if the tunnel A is curved, the conveyance through the air pipe 4 can be carried out in the same system even at the corner from the tunnel A to the shaft, and the conveyance capacity is large. It has the advantage of being able to be disposed through it in an airtight manner.

Furthermore, the proposed device can continuously cut the excavated soil into the air pipe 4 by the belt conveyor 3 even while the excavator 1 is moving forward, so that the excavated soil does not accumulate in the tunnel even temporarily and can be carried out. This will greatly help improve ability, improve working conditions, and ensure safety.

Furthermore, as described above, the present invention allows the wind pipe 4 fixed in the mine to be cut into the excavation area even while the excavator 1 is moving forward, and the wind pipe 4 is required to have elasticity or flexibility. Therefore, pressure-resistant and wear-resistant steel air pipes can be used, and this has the remarkable effect of making it possible for the first time to blow air under extremely high loads through excavated soil of this type.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Figure 1 is a side view;
FIG. 2 is a plan view, and FIG. 3 is a sectional view of the excavated soil cutting device. 1-excavator, 3-belt conveyor, 4-air pipe, 5-scraper

Claims (1)

[Scope of utility model registration request] In a tunnel excavation top transport device for transporting excavated soil using a wind blowing method, an excavator 1 is connected with a belt conveyor 3 that transports over the excavation to the rear by a length L or more of one wind pipe 4, and the excavator Below the rear belt conveyor 3 of No. 1, there is an input port 11 for excavation at the top, a notch 13 opening into the air pipe 4 at the bottom, and an intermediate section for excavation while maintaining an airtight state. Excavated soil cutting device 10 having a conveying device 12 for conveying the top
is fixed, and above the belt conveyor 3 is connected to the excavated soil cutting device 10 a scraper 5 that causes the conveyed excavation to fall from above the belt conveyor 3 into the cutting opening 13 of the excavated soil cutting device 10. This is a tunnel excavation soil removal device that is fixedly placed on floor surface B.