JPH0423079B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for removing slippage in a sloped shaft, which is particularly suitable for a sloped shaft with a steep slope.

[Prior art] When excavating a steep slope shaft, normally a small diameter waste removal chute is drilled in advance in the area where the slope shaft is to be excavated, leading to another work shaft, and the waste from the excavation of the slope shaft is dropped into the waste removal chute, and the waste is dropped into the waste removal chute. The slag is carried out from the working pit (see, for example, Japanese Patent Publication No. 33752/1983 by the present applicant).

However, if the separate working shaft is not excavated, the waste must be transported upward from the inclined shaft being excavated. In a slope with a gentle slope, this can be conveyed by a normal belt conveyor, but in a slope with a steep slope, the scraps slide down from the conveyor belt and cannot be conveyed. On the other hand, bucket conveyors that can transport materials upward have a complicated structure and are heavy, making them unsuitable for removing waste from inclined shafts.

In particular, when carrying out waste from a sloped shaft, the slope extends downward as it is excavated, so measures must be taken for the belt conveyor used to carry out the waste, but conventional technology has not been available to satisfy such countermeasures.

[Problems to be Solved] Accordingly, an object of the present invention is to easily extend a conveyor belt as an inclined shaft is excavated;
It is an object of the present invention to provide a method for removing waste from a slope shaft, which can streamline the work of carrying out waste.

[Means for Solving the Problems] According to the method for removing waste from a slope shaft of the present invention, excavated waste is thrown into a hopper, and the thrown waste is sandwiched between a third conveyor belt and a fourth conveyor belt, and then transported upward. The scraps conveyed upward are thrown into the upper chute, and the scraps are sandwiched between the second conveyor belt and the third conveyor belt and guided down to the lower chute, and the scraps are removed from the lower chute. is sandwiched between a first conveyor belt and a second conveyor belt, and the waste is conveyed upward by the first and second conveyor belts,
As the excavation operation progresses, the third and fourth conveyor belts, the hopper, and the upper chute are moved downward relative to the first and second conveyor belts.

[Description of operation and effect] Therefore, in order to carry out the waste, the waste is sandwiched between a pair of first and second conveyor belts and another third and fourth conveyor belt and moved upward. , the first and second conveyor belts and the third and fourth conveyor belts may be configured as separate conveyors, such that the first and second conveyor belts and the third and fourth conveyor belts can change their relative positions. Therefore, the hopper into which waste is introduced can be moved in accordance with the excavation of the inclined shaft, thereby improving work efficiency.

Also, the descending stroke of the third conveyor belt and the second
Since the waste can be caught from the upper chute to the lower chute using the descending stroke of the conveyor belt, the waste transported upward by the third and fourth conveyor belts is transferred to the first and second conveyor belts. You can easily do the pinching work. Furthermore, when transferring waste in this manner, the waste does not fall out.

Once the above-mentioned relative movement stroke has been completed, the above-described operation is repeated by lowering the first and second conveyor belts as a whole, except that the first and second conveyor belts The movement of is a technique outside the scope of the present invention.

[Examples] Examples of the present invention will be described below with reference to the drawings.

1 to 3 show an apparatus for carrying out the present invention. In the figures, the apparatus includes a belt storage stand 34 having a belt storage means, and a belt storage stand 34 having one end.
4, the other end of which is provided with an extension means extending into the inclined shaft H, and a pair of lower first conveyor belts (hereinafter referred to as A main conveyor MC consisting of belt A and an upper second belt B.
and a portion thereof is provided overlappingly above the lower end of the frame 1, and the frame 1 is moved by a sliding means.
Slide frame 1 that can be slid in the longitudinal direction of
7, and a pair of lower third belt C and upper fourth belt D stretched over the slide frame 17.
a slide conveyor SC consisting of a slide conveyor SC, a hopper 33 fixed to the slide frame 17 for feeding waste into the third belt C, a lower chute 14 provided near the lower end of the second belt B, and a third belt C. It is generally composed of an upper chute 32 provided near the upper end of C. and the first to fourth
Known flat belts are used as belts A to D. The structure of the device is therefore simple and lightweight.

The frame 1 consists of an upper frame 2 on the belt storage stand 34 side, and a lower frame 3 connected to the upper frame 2 via a jack 4 serving as an extension means so as to be extendable in the longitudinal direction.
An electric winch 6 is attached to the tower 5 erected.

The first belt A moves downward guided by return rollers 7, 7, etc. provided on the frame 1, is reversed upward by a tail pulley 8, and is moved to a guide roller 9.
After being once guided inwardly, the plurality of rollers 10a provided on the frame 1 move upwardly guided by known carrier rollers 10, 10, . . . which are arranged in a downwardly curved manner.

The second belt B is provided on the frame 1 and moves downward guided by return rollers 11, 11...
It is reversed downward by a tail pulley 12 provided above the tail pulley 8, and the first
After being once guided downward together with the first belt A, it moves upward while being held between the holding rollers 13 and the carrier roller 10, which are provided opposite to each other at both ends of the carrier roller 17, together with the first belt A. The lower end of the second belt B is connected to the first belt A.
The lower chute 1 is guided downward by the guide pulley 9 to guide the shear to the slope portion A1 formed.
4 is fixed to the lower frame 3. Further, in the overlapping portion of the third belt C, carrier rollers 15 and 1 similar to the carrier roller 10 are provided.
5... is provided.

The slide frame 17 includes a base portion 18 parallel to the lower frame 3 that is guided by the lower frame 3 via a moving roller 21, a hanging portion 19 substantially hanging from the base portion 18, and a horizontally protruding portion from the hanging portion 19. A wire rope 22 is stretched between the base 18 and the electric winch 6. These electric winch 6 and wire rope 22 constitute a sliding means.

The third belt C moves upward guided by a tail pulley 23 provided at the lower end of the slide frame 17 and carrier rollers 24, 24, . Nipping rollers 16 provided on the lower frame 3 opposite to both ends of the rollers 15
and the carrier roller 15, it descends while being held together with the second belt B, and connects the vertical portion 19 and the horizontal portion 2.
Return rollers 26, 26, 2 provided at
6a and returns to the tail pulley 23.

The fourth belt D has an upper part running downward and a lower part running upward, and has a vertical part 19.
and a tail pulley 27 provided on the base 18,
Guide roller 28, return rollers 29, 29...
A drive pulley 30 provided above the drive pulley 25 is guided by the drive pulley 25.
is reversed. During its upward movement, the fourth belt D is held together with the third belt C by a holding roller 31 and a carrier roller 24, which are provided opposite both ends of the carrier roller 24, to transport the waste upward. Further, at the upper end of the third belt C and below the fourth belt D, an upper chute 32 for guiding the shear to the second belt B is provided on the slide frame 17. Further, a hopper 33 for feeding scraps into the third belt C is erected on the horizontal portion 20 of the slide frame 17.

The belt storage stand 34 is formed of a planar rectangular frame frame that is long in the direction of the frame 1, and includes a first take-up device 35 for a first belt A, which is a belt storage means, and a first take-up device 35 for a first belt A, which is a belt storage means, in order from the conveyor 1 side in the longitudinal direction. Second take-up device 36 for belt B of No. 2
is provided.

Each take-up device includes a plurality of parallel upper rollers 39 and lower rollers 40 provided in a staggered manner on an upper frame 37 and a lower frame 38 that is moved upward by a drive motor (not shown).

The first belt A is guided by a carrier roller 10 disposed above the upper roller 39, is reversed downward by a drive pulley 42 driven by a deceleration motor 41, is reversed downward by a guide roller 43, and is transferred to the upper roller. 39 and the lower roller 40 in a staggered manner, and extends toward the return roller 7 side of the frame 1. Note that 44, 44 is a counterweight for tensioning the belt A.

The second belt B is guided by the carrier roller 10 together with the first belt A, and is driven by the deceleration motor 45.
The drive pulley 46 and the guide roller 47, which are driven by 1 side, is guided by the guide roller 50, and extends toward the return roller 11 side of the frame 1. In addition, the lower frame 3
is adapted to be locked in the current position by a locking means (not shown) provided between the lower frame 3 and the belt storage stand 34.

When excavating the inclined shaft H, the waste that has been crushed by drilling and blasting with a gantry jumbo (not shown) is thrown into the hopper 33 by a shear loader (not shown). The input waste Z is conveyed by the third belt C, then is sandwiched between the third belt C and the fourth belt D (Z1 in FIG. 3), moves upward, and is transferred to the upper chute 32 by the third belt C. It is fed into the return side of belt B in No.2. The thrown waste is caught between the second belt B and the third belt C (Z2 in Fig. 3) and moves downward.
The slope portion A1 of the first belt A at the lower chute 14
will be put into the The inserted waste is the first belt A
and the second belt B (Fig. 3 Z
3) It ascends, is reversed by the drive pulley 42 of the belt storage stand 34, and is dropped onto the floor F (see Z in Fig. 1).
4). In this way, since the waste Z is conveyed while being sandwiched between the opposing belts, the waste can be easily transported from the steeply inclined shaft to the ground surface.

As the excavation progresses, the electric winch 6 is activated to pay out the wire rope 22 according to the progress.
The slide frame 17 is slid downward a to carry out the waste. And slide frame 1
7 slides a predetermined distance, the jack 4 is extended to extend the lower frame 3 to follow the slide frame 17, and in accordance with the extension, the electric winch 6 is operated in reverse to wind in the wire rope 22, and the lower frame 3 is moved to the slide frame 17. Slide it upward b. At this time, the take-up devices 35, 3
The drive motor 6 operates to raise the lower frame 38 and extend the first belt A and the second belt B by a length corresponding to the extension of the lower frame 3. Thereafter, the fixation between the jack 4 and the upper frame 2 is released, the jack 4 is retracted, and an extension frame (not shown) is added to the gap formed between the upper frame 2 and the lower frame 3 to connect both frames 2 and 3. Link.
Then, the waste is carried out in the same manner as described above.

As described above, the present invention provides the following excellent effects.

(1) The position of the hopper can be moved as the excavation work progresses, improving work efficiency.

(2) Since waste is conveyed while being sandwiched between a pair of conveyor belts, there is no spillage during conveyance.

(3) Even if the relative positions of the first and second conveyor belts change, the waste is caught between the second and third conveyor belts, so they are reliably guided to the lower chute. be done.

(4) Therefore, waste from the inclined shaft can be easily transported to the ground, and there is no need to use a complicated bucket conveyor.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
This figure is a perspective view showing the main part of the lower end part of FIG. 1, and FIG. 3 is a cross-sectional view taken along the line -- in FIG. 2. A...first belt, B...second belt, C...third belt, D...fourth belt, H...diagonal shaft, Z...
Misalignment, 1... Frame, 2... Upper frame, 3... Lower frame, 4... Jacket, 6... Electric winch,
10, 15, 24...Carrier roller, 13, 1
6, 31...Snipping roller, 14...Lower chute, 1
7...Slide frame, 22...Wire rope, 3
2...Upper chute, 33...Hopper, 35...First
take-up device, 36... second take-up device, 37... upper frame, 38... lower frame, 39
...Upper roller, 40...Lower roller, 44...Counterweight.

Claims (1)

[Claims] 1 The excavated waste is put into the hopper, the thrown waste is sandwiched between the third conveyor belt and the fourth conveyor belt and conveyed upward, the waste carried upward is thrown into the upper chute, and the waste is conveyed upward. The waste is sandwiched between the second conveyor belt and the third conveyor belt and guided down to the lower chute. The second conveyor belt conveys the waste upward, and as the excavation work progresses, the third and fourth conveyor belts, the hopper, and the upper chute are moved downward with respect to the first and second conveyor belts. A method for removing slippage from a slope shaft.