JP2000027595A - Continuous belt conveyor protective device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a continuous belt conveyor protective device that is capable of securing safety for workers working on a tunnel truck while maintaining parallel execution of works for mucking and lining. SOLUTION: The present continuous belt conveyor protective device is constructed of a transparent cylindrical cover 21 to be put on a frame member 11a of a continuous belt conveyor 4 belonging to a section related to a tunnel truck (a sheet truck 3) and a chain block 22 for hanging the transparent cylindrical cover 21 down from the sheet truck 3, and the chain block 22 is equipped with an expansive/contractile means that makes the transparent cylindrical cover 21 attachable and detachable with the length of hanging being expanded and contracted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention protects a worker who works on a seat trolley, a center trolley, and other trolleys (hereinafter referred to as "tunnel trolleys") provided in a tunnel from a continuous belt conveyor in operation. The present invention relates to a continuous belt conveyor protection device.

[0002]

2. Description of the Related Art Conventionally, a continuous belt conveyor belonging to a section related to a tunnel bogie is allowed to pass from the tunnel side without being supported, so that slippage in tunnel excavation is performed only by the continuous belt conveyor. Has been proposed (Japanese Patent Application No. Hei 10-9785).
No. 8), according to this, excavation (slipping) and lining work can be performed in parallel, realizing rapid construction, ultimately dramatically improving safety in the tunnel mine, and achieving a clean environment in the tunnel mine. be able to.

[0003]

However, in a section of the continuous belt conveyor other than the section related to the tunnel bogie, immediate safety is ensured only by prohibiting the area below the continuous belt conveyor from entering. On the other hand, in the section related to the tunnel bogie, even if the area below the continuous belt conveyor is prohibited, workers on the tunnel bogie will always work near the continuous belt conveyor, such as sticking sheets. As a result, there is a possibility that the worker is involved, and safety is not guaranteed.

On the other hand, in order to ensure safety by stopping operations such as attaching a sheet while a continuous belt conveyor is operating, a technique for enabling parallel operations of excavation (slipping) and lining is required. The significance of proposing a strategic measure is lost.

Accordingly, an object of the present invention is to provide a continuous belt conveyor protection system capable of ensuring the safety of workers working on a tunnel bogie while maintaining parallel work of excavation (slipping) and lining. It is to provide a device.

[0006]

In order to achieve the above-mentioned object, a continuous belt conveyor protection device according to the present invention comprises a shell member which is installed on a frame member of a continuous belt conveyor belonging to a section related to a tunnel bogie, and a shell member provided with the shell member. A suspension member for suspending a shell member from the tunnel carriage, wherein the suspension member includes a suspension length extending / contracting means for extending / retracting a suspension length to make the shell member detachable. I have.

That is, the present invention protects a worker who works on a tunnel bogie from a continuous belt conveyor belonging to a section related to the tunnel bogie, and maintains parallel work of excavation (slipping) and lining. Meanwhile, it is possible to ensure the safety of such workers.

In such technical means, as the suspension length extending / contracting means, any structure and type can be used as long as the suspension length can be extended / contracted to make the shell member detachable. Whether or not to use it may be appropriately selected, and for example, a hydraulic cylinder, a chain block, a winch or the like may be used.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the accompanying drawings. FIG. 1 is a front view schematically showing a section of a tunnel truck to which the continuous belt conveyor protection device according to the present embodiment is applied, and FIG.
It is a side view which shows the outline of the section which concerns on the tunnel bogie to which the said continuous belt conveyor protection apparatus was applied.

[0010] In these figures, reference numeral 1 denotes a support 1
a tunnel where the construction of a and the construction of the shotcrete 1b have been completed, reference numeral 2 denotes a pair of running rails laid on the construction base surface K in the tunnel 1, and reference numeral 3 denotes a surface of the shotcrete 1b. FIG. 2 shows a work platform for attaching a waterproof sheet (not shown), which is a tunnel carriage capable of traveling back and forth on the pair of traveling rails 2.

Reference numeral 4 denotes a continuous belt conveyor for continuously transporting excavation debris generated at the face to the wellhead, and includes a frame member 11a, a set of carrier rollers 11b and a return roller supported by the frame member 11a. A rubber belt 12 is stretched between a frame unit 11c integrally formed with a pulley (not shown) at a front end and a rear end of the frame unit 11c. The continuous belt conveyor protection device which protects the worker M from the running continuous belt conveyor 4 is shown.

As shown in FIGS. 3 and 4, the continuous belt conveyor protection device 5 according to the present embodiment is
The cylindrical transparent cover 2 as a shell member installed on the frame member 11a of the continuous belt conveyor 4 belonging to the section according to
1 and a pair of chain blocks 22 serving as suspending members for suspending the cylindrical transparent cover 21 from the seat cart 3.
It is composed of

The cylindrical transparent cover 21 according to the present embodiment.
As shown in FIG. 3 and FIG. 4, a plurality of semi-circular shaped steel members 21a which are processed into semi-circular shapes and are arranged at equal intervals, and a cylindrical shape fixed to the lower surface of the semi-circular shaped steel members 21a. A cover main body 21b made of transparent plastics, an H-shaped steel 21d having a length dimension corresponding to the cover main body 21b and integrating the semicircular shaped steel 21a through a triangular piece 21c, And a pair of suspension pieces 21e fixed to the top surface of the flange of steel 21d. The reason why the cover body 21b is made of a transparent material is that if there is an abnormality in the operation state of the continuous belt conveyor 4, it can be easily found.

In the present embodiment, the chain block 22 not only functions as a hanging member for hanging the cylindrical transparent cover 21 but also extends and retracts the hanging length to attach and detach the cylindrical transparent cover 21. The pulley 22a also serves as a suspension length extending / contracting means that can be freely adjusted.
It is composed of a chain 22b wound around the pulley 22a and a hook 22d hooked on the hanging piece 21e using a shackle 22c.

Next, the operation of the continuous belt conveyor protection device 5 according to the present embodiment will be described with reference to FIGS.

First, at a timing before the seat cart 3 moves, the operation of the continuous belt conveyor 4 is stopped,
Subsequently, when the chain 22b wound around the pulley 22a is rotated, the suspension length of the chain block 22 is gradually reduced, so that the cylindrical transparent cover 21 is raised.

When the cylindrical transparent cover 21 rises to a height at which the clearance from the continuous belt conveyor 4 can be secured, the worker M stops rotating the chain 22b.

In such a situation, the seat cart 3 is moved. Then, the cylindrical transparent cover 21 suspended from the seat cart 3 follows the running of the seat cart 3 and passes through the area above the continuous belt conveyor 4.

After the movement of the seat carriage 3, the chain 22b wound around the pulley 22a is rotated, and when the suspension length is gradually extended, the cylindrical transparent cover 21 is lowered.

When the leg of the cylindrical transparent cover 21 is laid and fixed on the frame member 11a of the continuous belt conveyor 4, the worker M stops rotating the chain 22b.

When the operation of the continuous belt conveyor 4 is started again, the continuous belt conveyor 4 is moved to the cylindrical transparent cover 21.
The rubber belt 12 is rotated within the range protected by the above to perform slippage.

At this time, the worker M who uses the seat trolley 3 as a work scaffold performs a work such as sticking a sheet in close proximity to the continuous belt conveyor 4 in operation.

However, since the continuous belt conveyor 4 is protected by the cylindrical transparent cover 21, there is no possibility that the worker M may be caught between the rubber belt 12 and the carrier roller 11b. .

Incidentally, the cylindrical transparent cover 21 exerts a function of effectively protecting the continuous belt conveyor 4 against falling objects (for example, tools) from the seat cart 3, so that the rubber belt 12 is damaged. The worst case in which the entire continuous belt conveyor 4 cannot be used is also prevented beforehand.

Therefore, according to the continuous belt conveyor protection device 5 according to the present embodiment, it is possible to protect the worker M working on the seat trolley 3 from the continuous belt conveyor 4 belonging to the section related to the seat trolley 3. Yes, and
Since the movement of the seat cart 3 can be performed smoothly and promptly, it is possible to secure the safety of the worker M while maintaining the parallel work of excavation (slipping) and lining.

[0026]

As described above, according to the continuous belt conveyor protection device of the present invention, the shell member installed on the frame member of the continuous belt conveyor belonging to the section related to the tunnel bogie, and the shell member, A suspension member suspended from the tunnel truck, the suspension member includes suspension length extending / contracting means for extending / retracting the suspension length to make the crust member detachable, so that excavation (slipping) and It is possible to secure the safety of the worker who works on the tunnel bogie while maintaining the parallel work with the lining.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing a section of a tunnel truck to which a continuous belt conveyor protection device according to an embodiment of the present invention is applied.

FIG. 2 is a side view schematically showing a section of a tunnel truck to which the continuous belt conveyor protection device according to the embodiment of the present invention is applied.

FIG. 3 is a front view schematically showing a continuous belt conveyor protection device according to one embodiment of the present invention.

FIG. 4 is a side view schematically showing a continuous belt conveyor protection device according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tunnel 1a ... Shoring 1b ... Shotcrete 2 ... A pair of running rails 3 ... Seat trolley 4 ... Continuous belt conveyor 5 ... Continuous belt conveyor protection device 11 ... Frame unit 11a ... Frame member 11b ... Carrier roller 11c ... Return roller 12 ... Rubber belt 21 ... Cylindrical transparent cover 21a ... Semicircular shaped steel 21b ... Cover body 21c ... Triangle piece 21d ... H-shaped steel 21e ... Hanging piece 22 ... Chain block 22a ... Pulley 22b ... Chain 22c ... Shackle 22d ... Hook K ... Construction Base M: Worker

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasufumi Miura 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation F-term (reference) 2D054 AB07 AC20 DA02

Claims (1)

[Claims] 1. A shell member which is installed on a frame member of a continuous belt conveyor belonging to a section related to a tunnel truck, and a suspension member which suspends the shell member from the tunnel truck. A continuous belt conveyor protection device comprising a suspension length extending / contracting means for extending / retracting a lower length to make a shell member detachable.