JP2021095717A - Lifting device for belt conveyor line - Google Patents

Abstract

To provide a lifting device for a belt conveyor line which does not require a large amount of support scaffolds with special lifting function necessary to be lifted so as to create no cost problem, and require no operation with a lifting heavy machine.SOLUTION: A line height changeable bogie 7 comprises a first direction change pulley 11, a second direction change pulley 15, a third direction change pulley 16, and a fourth direction change pulley 13, being comprised to fall muck loaded on a conveyor belt 12 at an upper side position moving from a face plane side to a pit mouth side from a point of the first direction change pulley. The fallen muck is accommodated in a muck accommodation case 17 and loaded on a conveyor belt moving to the pit mouth side on a conveyor placed line at a side position lower than a muck outlet arranged in a bottom part.SELECTED DRAWING: Figure 1

Description

The present invention relates to, for example, an elevating device for a belt conveyor line capable of elevating and lowering the height of the belt conveyor line in a sliding method using a belt conveyor in mountain tunnel construction work.

For example, in the construction of a long mountain tunnel with a length of 2000 m or more, a belt conveyor is used for transportation work for discharging excavation scraps to the outside of the tunnel.
Here, in the excavation scrap transportation work by the belt conveyor, there is a possibility that the equipment of the belt conveyor installed in the tunnel and the excavation work performed in the tunnel interfere with each other. That is, the equipment of the belt conveyor may interfere with the excavation work.

Therefore, it becomes necessary to change the line height (installation height) of the belt conveyor according to the work process and work range of tunnel excavation.
For example, when making a U-turn of a construction vehicle or installing a turntable for a U-turn of a construction vehicle, the line of the belt conveyor should be set at a high position in order to avoid contact between the belt conveyor and the construction vehicle. Install. In addition, at the lining concrete construction site, the belt conveyor line will be installed at a low position for casting and compaction work.

Furthermore, it is also necessary to move the equipment and work range for carrying out these sliding transportation operations according to the progress of tunnel excavation. Therefore, it becomes necessary to change the installation height of the belt conveyor line each time according to the work process and work range.

Conventionally, in order to cope with the above-mentioned situation, when the line height of the belt conveyor is installed at a high position, for example, after the belt conveyor is lifted by a heavy machine, a support stand newly fixed to the tunnel wall surface is used. And measures such as changing the installation height due to the construction of support scaffolding were taken.

However, such conventional measures require a heavy lifting machine, which interferes with other work, and requires the construction of a support scaffolding for the belt conveyor while lifting the work, resulting in a large amount of time and cost. There was a problem that it would take a lot of money and the risk would increase.

Therefore, in order to deal with these problems, a stretchable elevating support scaffold for supporting a belt conveyor has been proposed as in Japanese Patent Application Laid-Open No. 2017-125321 and Japanese Patent Application Laid-Open No. 2017-155464. In this proposal, it was possible to move up and down manually from the ground without the need for heavy machinery to change the line height of the belt conveyor.

However, in the above proposal, all the supporting scaffolds that need to be lifted and lowered need to have a lifting function. In that case, there is a cost problem due to the use of a large amount of special support scaffolding. On the other hand, it is conceivable to replace the scaffolding with a normal support scaffold when it is no longer necessary to move up and down, but a separate replacement work will be required, and the work by the lifting heavy machine, which is a conventional problem, will also occur.

Japanese Unexamined Patent Publication No. 2017-125321 Japanese Unexamined Patent Publication No. 2017-155463

Thus, the present invention has been devised to solve the above-mentioned conventional problems, and does not use a large amount of special support scaffolds with a lifting function that need to be lifted and lowered, thus causing a cost problem. It is an object of the present invention to provide an elevating device for a belt conveyor line, which does not cause any work by a lifting heavy machine.

The present invention
A first-direction conversion pulley that moves the conveyor belt with the shears that move on the conveyor installation line at a high position in the tunnel downward to the conveyor installation line at the lower position of the tunnel.
A second turning pulley that moves the conveyor belt downward to the conveyor installation line at the lower position of the tunnel from the face side to the wellhead side at the conveyor installation line at the lower position.
A third direction change pulley that changes the direction of the conveyor belt from the wellhead side to the face side by the tail pulley installed near the wellhead to the conveyor installation line at a high position in the tunnel.
It has a fourth direction change pulley that changes the direction of the conveyor belt that has moved to the conveyor belt installation line at a high position of the tunnel from the wellhead side to the face surface side at the conveyor installation line at the high position.
The shear loaded on the conveyor belt moving from the face surface side to the wellhead side is configured to fall from the position of the first direction change pulley.
The dropped slides are stored in the slide receiving case and loaded on the conveyor belt that moves to the wellhead side on the conveyor installation line located below the slide discharge port provided at the bottom.
Characterized by that
Or
The first direction change pulley, the second direction change pulley, the third direction change pulley, and the fourth direction change pulley have a structure in which the mounting position can be changed in the vertical direction.
Characterized by that
Or
The lifting device of the belt conveyor is equipped with a moving member that can move in the longitudinal direction of the tunnel.
It is characterized by that.

According to the present invention, for example, the line height of the belt conveyor can be changed without the need for lifting work of the belt conveyor by the lifting heavy machine, and since the use of the lifting heavy machine is not required, it goes back and forth in the mine. Does not interfere with the work of. Furthermore, unlike the conventional support scaffold with an elevating function, a special support scaffold is not required, and only a general support scaffold may be used, which is an excellent effect.

It is a structural explanatory drawing (1) explaining the structure of this invention. FIG. 1 is a view taken along the line CC of FIG. FIG. 2 is a configuration explanatory diagram (2) for explaining the configuration of the present invention. FIG. 1 is a view taken along the line BB of FIG. It is a view of arrow AA of FIG. It is explanatory drawing explaining the use state of this invention. It is explanatory drawing explaining the conventional structure.

Hereinafter, the present invention will be described with reference to the examples shown in the figure.
First, FIG. 7 shows an outline of a belt conveyor line used for conventional shear transportation. Tunnel excavation work is performed on the face surface 2 of the mine 1. Then, a shear is generated by the excavation work, and the shear is discharged to the outside of the mine by the belt conveyor 3.

Here, in the vicinity of the face surface 2, the belt conveyor 3 is installed at a high position of the tunnel 4 so as not to obstruct the passage of the vehicle because the work vehicle needs to make a U-turn or the like. .. However, in the vicinity of the slide center 5, it is necessary to install the line height of the belt conveyor 3 at a low position for lining work. However, in one conventional embodiment, as shown in FIG. 7, the height of the support scaffold 6 of the belt conveyor 3 is changed to change the height from the high installation location of the belt conveyor 3 to the low installation location at a gentle inclination angle. Was installed. The inclined line of the gently installed belt conveyor 3 needs to have a length of about 40 m.

Here, it is necessary to move the belt conveyor line for sliding forward every time the tunnel excavation progresses, and the support scaffolds 6 used for installing the inclined line are the support scaffolds 6 having different heights. Even if the support scaffold 6 was a support scaffold with an elevating function, the plurality of support scaffolds 6 having different heights had to be manually disassembled and reassembled.

On the other hand, FIG. 6 shows an outline of the belt conveyor line according to the present invention. In the present invention, when changing the line height of the belt conveyor 3, the line height changing carriage 7 is used.

By adopting this line height change trolley 7, the vicinity where the lining work is performed is the support scaffold 6 that supports the belt conveyor 3, for example, instead of a support scaffold having an elevating function or a plurality of support trolleys having different heights. , A normal support scaffold 6 having the same height can be used. Then, the line of the belt conveyor 3 can be easily moved forward.

Considering the tunnel generation, excavation work is performed near the face surface 2 between the face surface 2 and the wellhead of the tunnel 4, and a tarpaulin work is performed behind the face surface 2 with a so-called seat carriage 8 or the like, and a cover is performed near the slide center 5. Work such as construction concrete work is carried out.

Here, during the excavation work in the vicinity of the face surface 2 and the waterproof sheet work of the seat trolley 8 behind the face surface 2, when the U-turn location of the construction vehicle 9 or the turntable for the U-turn is installed, In order to avoid contact between the belt conveyor 3 and the construction vehicle 9, the line height of the belt conveyor 3 is set at the upper portion of the tunnel 4 as shown in FIGS. 6 and 7.

Since the lining concrete work is performed in the vicinity of the slide center 5, the line height of the belt conveyor 3 is set below the side portion of the tunnel 4 so as not to hinder the compaction work of the tunnel shoulder.

Therefore, it is necessary to lower the line height of the belt conveyor 3 between the seat carriage 8 and the slide center 5, and in the present invention, the line height changing carriage 7 of the belt conveyor 3 is incorporated between them to form the line of the belt conveyor 3. Corresponds to height change.

1 to 5 show the configuration of the line height changing carriage 7 according to the present invention.
First, casters 10 are attached to the line height changing carriage 7, and are configured to be able to move between the face surface 2 and the wellhead in the tunnel 1, that is, between the longitudinal directions in the tunnel 4. The movement may be configured to be self-propelled, or may be configured to be movable by human power or by another power source.

Further, the line height changing trolley 7 is a conveyor at a high position of the tunnel 4, that is, a conveyor belt 12 on which a shear moving on the conveyor installation line at the upper portion of the tunnel 4 is loaded is placed at a lower position of the tunnel 4. It has a first directional change pulley 11 that moves downward to the installation line.

Further, the conveyor belt 12 which is moved downward to the conveyor installation line at the lower position of the tunnel 4 by the first direction change pulley 11 is moved from the face surface side to the wellhead side at the conveyor installation line at the lower position. It has a turning pulley 15.

Further, the conveyor belt 12 whose direction is changed by the second direction changing pulley 15 is changed in direction from the wellhead side to the face surface side by a tail pulley (not shown) installed near the wellhead.

Then, it has a third direction changing pulley 16 that changes the direction of the changed direction conveyor belt 12 to the conveyor installation line at a high position of the tunnel 4.

Further, a fourth direction changing pulley 16 is used to change the direction of the conveyor belt 12 to the conveyor belt installation line at a high position of the tunnel 4 from the wellhead side to the face surface side at the conveyor installation line at the high position. It has a turn-turning pulley 13.

Then, the shear loaded on the conveyor belt 12 moving from the face surface side to the wellhead side described above is configured to fall from the position of the first direction conversion pulley 11, and the fallen slip is received by the slip receiver. It is housed in the case 17, and is loaded on a conveyor belt 12 that moves toward the wellhead side by a conveyor installation line located below the sliding discharge port 19 provided at the bottom of the case 17.

Here, the first direction change pulley 11 and the fourth direction change pulley 13 are held by the upper pulley mounting rod 23, and the upper pulley mounting rod 23 is attached to the carriage main body 21.

The upper pulley mounting rod 23 may be configured to be adjustable in the vertical direction. If the vertical movement can be adjusted, the height can be easily adjusted at other tunnel excavation sites according to the site.

Here, the conveyor belt 12 on which the shears are loaded is installed at a high position in the tunnel 4 by a first direction change pulley 11 or the like as shown in the figure, but the second direction change included in the line height change carriage 7. The pulley 15 allows the conveyor belt 12 to be changed to the installation height of the conveyor belt 12 installed in the vicinity of the slide center 5, that is, a height equivalent to the line height set at a low position.

Further, the direction of the conveyor belt 12 is changed by the tail pulley installed near the wellhead, and the conveyor belt 12 is set on the lower conveyor line and moves from the wellhead side toward the face surface 2 side. Then, the conveyor belt 12 located on the lower side thereof is held by the fourth direction change pulley 13 installed at a high position of the tunnel 4 via the third direction change pulley 16 to change the direction.

The conveyor belt 12 held by the fourth direction change pulley 13 is configured to move toward the face surface 2.

Here, the second direction changing pulley 15 is attached to the first mounting rod 24 erected from the trolley main body 21, and the third direction changing pulley 16 is attached to the second mounting rod 25 erected from the trolley main body 21. It is attached.

The second direction change pulley 15 and the third direction change pulley 16 may also be configured to be adjustable in the vertical direction. This is because if the vertical movement can be adjusted, the height can be adjusted at other tunnel excavation sites according to the site.

In the above configuration, as shown in the figure, the shear loaded on the conveyor belt 12 is configured to fall from the position of the first direction conversion pulley 11 in the traveling direction, that is, toward the wellhead side.

Then, as shown in the figure, the falling slide is stored in the slide receiving case 17 from the slide input port 18 formed by opening the upper surface, and further loaded on the conveyor belt 12 from the slide discharge port 19 provided at the bottom. , It is supposed to be moved out of the mine.

Here, the sliding discharge port 19 is configured as a narrowed opening whose discharge opening narrows in the width direction so as not to protrude from the width direction of the conveyor belt 12. Further, as shown in the figure, the conveyor belt 12 is configured as a curved surface having a substantially bowl-shaped cross section in the width direction, and is devised so that the slips loaded on the conveyor belt 12 do not spill out further. ing.

By the way, reference numeral 20 is a shear receiving piece, which is provided in the shear receiving case 17 as shown in the figure. The role of the shear receiving piece 20 is that when the shear loaded on the belt conveyor 12 vigorously falls into the shear receiving case 17, the falling shear is received, the falling speed is reduced, and the slip discharge port 19 is used. This is to smoothly transfer to the conveyor belt.

Here, the line height changing carriage 7 includes a first direction conversion pulley 11 and a fourth direction conversion pulley 13 attached to a carriage body 21 to which casters 10 are attached and an upper pulley mounting rod 23 attached to the carriage body 21. have.

Further, it has a second direction changing pulley 15 and a third direction changing pulley 16 attached to the first mounting rod 24 and the second mounting rod 25 attached to the bogie main body 21.

Further, in the carriage main body 21 framed in a rectangular shape, there is a case-shaped sliding receiving case 17 having a sliding inlet 18 and a sliding discharge port 19 in the vertical direction as described above.

However, the line height changing carriage 7 is incorporated in the belt conveyor system in advance. Then, each time the tunnel excavation progresses, it advances about 6 m forward. When moving forward, the bracket 22 is attached further forward to install a support scaffolding 6-lt conveyor line at the upper part of the tunnel 4. Further, the seat carriage 8 is moved forward, and at the same time, the line height changing carriage 7 is also moved forward.

Then, since there is an interval in which the support scaffolding 6 is not installed by the distance moved forward, the support scaffolding 6 is re-installed at that interval. At this time, since the support scaffolds 6 are all configured to have the same length, the relocation of the support scaffolds 6 as described above can be easily performed.

1 Underground 2 Face 3 Belt conveyor 4 Tunnel 5 Slide center 6 Support scaffold 7 Line height change trolley 8 Seat trolley 9 Construction vehicle 10 Caster 11 1st direction change pulley 12 Conveyor belt 13 4th direction change pulley 15 2nd direction change Pulley 16 Third direction conversion pulley 17 Sliding receiving case 18 Sliding inlet 19 Sliding discharge port 20 Sliding receiving member 21 Cart body 22 Bracket 23 Upper pulley mounting rod 24 First mounting rod 25 Second mounting rod

Claims (3)

A first-direction conversion pulley that moves the conveyor belt with the shears that move on the conveyor installation line at a high position in the tunnel downward to the conveyor installation line at the lower position of the tunnel.
A second turning pulley that moves the conveyor belt downward to the conveyor installation line at the lower position of the tunnel from the face side to the wellhead side at the conveyor installation line at the lower position.
A third direction change pulley that changes the direction of the conveyor belt from the wellhead side to the face side by the tail pulley installed near the wellhead to the conveyor installation line at a high position in the tunnel.
It has a fourth direction change pulley that changes the direction of the conveyor belt that has moved to the conveyor belt installation line at a high position of the tunnel from the wellhead side to the face surface side at the conveyor installation line at the high position.
The shear loaded on the conveyor belt moving from the face surface side to the wellhead side is configured to fall from the position of the first direction change pulley.
The dropped slides are stored in the slide receiving case and loaded on the conveyor belt that moves to the wellhead side on the conveyor installation line located below the slide discharge port provided at the bottom.
An elevating device for a conveyor belt line, which is characterized by this.
The first direction change pulley, the second direction change pulley, the third direction change pulley, and the fourth direction change pulley have a structure in which the mounting position can be changed in the vertical direction.
The belt conveyor line elevating device according to claim 1.
The lifting device of the belt conveyor is equipped with a moving member that can move in the longitudinal direction of the tunnel.
The belt conveyor line elevating device according to claim 1 or 2, wherein the belt conveyor line elevating device.

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