JP2954840B2 - Conveyor trolley for waste removal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor truck for taking out an excavated waste to the rear of the tunnel when excavating the tunnel.

[0002]

2. Description of the Related Art In tunnel excavation work, a device called a gantry equipped with a blasting machine and a work cage,
Many works such as a scraper called a shuffler that collects excavated debris on the belt conveyor side, a trolley that transports debris, the above-mentioned belt conveyor that conveys from the rake to the trolley, and other concrete spraying machines Machines are used.

After the gantry is moved to the tunnel face side to form a blast hole, an explosive is loaded into the blast hole, the gantry is retracted and blasted, and then the shuffler is advanced to move the excavation slip to the belt. Collected on the conveyor side,
After being transported backward by a belt conveyor and loaded on a toro trolley, when the work of discharging this debris is completed, erection work is carried out, construction of shotcrete is carried out, and the gantry is advanced to the face again to perform the next blasting work ing.

[0004]

However, since the above-mentioned various operations are performed intensively near the face,
Another work machine is kept behind the tunnel until one work is completed, and after the work is completed, the next work machine is moved to the face. At that time, it is necessary to replace the completed machine with the next machine.However, because the working space in the tunnel is narrow, if two machines are replaced so that they are rubbed, they will come into contact with each other and break. In addition to the danger that such work may occur, the work is extremely dangerous and requires careful replacement, which significantly reduces the work efficiency and, in addition, uses an efficient large-scale work machine. However, there was a problem that the construction period of the tunnel construction was prolonged. SUMMARY OF THE INVENTION An object of the present invention is to provide a conveyor for transporting a waste that can completely solve such a problem.

[0005]

In order to achieve the above-mentioned object, the present invention provides a conveyor for transporting slips, which is a conveyor for transporting shears which runs on a rail laid in a tunnel, and has a narrow gauge on a bottom surface of the tunnel. A first rail that can run on the narrow gauge rail and a first rail that can run on the narrow gauge rail on both side frame portions of the conveyor for slip-out while laying the wide rail with the narrow rail and the narrow rail as the center. A possible second pillar and the first
The footnote is foldable in the length direction of the conveyor, and the second pedestal is stretchable and freely openable and closable in the inward and outward directions so that either the first pedestal or the second pedestal travels on the rail. It is configured as follows.

Further, the invention according to claim 2 shows a specific mounting structure of the first and second pillars to the conveyor frame, and the first pillar has an upper end portion which is a side frame of the conveyor. Pivotally attached to the front and rear parts of the conveyor, connecting the rod protruding upward from the pivoted part and the jack mounted on the frame of the conveyor, and standing up and folding by the expansion and contraction of this jack On the other hand, the second pillar has an upper end fixed to an outer end of a fixed width intermediate member having an inner end rotatably connected to a side frame of the conveyor via a vertical shaft. The lower pillar is divided into upper and lower pillars, and the lower pillar is configured to be expandable and contractable by jacks.

[0007]

When a blast hole is to be drilled in the face, the conveyor truck is kept behind the tunnel and the gantry is advanced to the vicinity of the face of the tunnel. The gantry is a large-sized machine running on a wide rail, and has a main body formed in a front gate shape, and has a space through which a conveyor truck can pass. Then, when the drilling operation and the loading of the explosive into the blast hole are completed, the gantry is retracted to the position of the conveyor truck which is not affected by the blast. Next, the shuffler and the conveyor trolley are moved forward to carry out work for removing debris excavated by blasting.

At this time, the gantry is replaced with a shuffler and a conveyor truck. First of all,
The first pedestal is configured to allow the conveyor to run on a narrow rail, to reduce the length of the second pedestal and to be closed inside the side frame of the conveyor. In this state, the conveyor is advanced to pass through the gantry. On the other hand, the shuffler is formed to have a small width and a low height so that it can run on a narrow rail.

Further, since it is necessary to replace this shuffler with a conveyor and advance it to the position of the excavation shear near the face, at this time, the second pillar of the conveyor is opened outward and extended to lower the lower end wheel. Put on a wide gauge rail,
The second pedestal supports the conveyor so as to be able to run, and the space between the pedestals and the height of the footnote forms a space through which a shuffler similar to the gantry can pass. The shroud is then run along a narrow gauge rail and advanced toward the face.

[0010] Then, while the shears are sent out onto the conveyor while being scraped by the shuffler, the toro truck is driven on the narrow rail from the rear of the tunnel to pass through the gantry, and then between the pedestals of the second pedestal of the conveyor. Forward to receive the waste carried by the conveyor and discharge it to the rear of the tunnel. The erection work is performed using the gantry, and the concrete spraying operation may be performed using a gantry or a separate working machine capable of traveling on a narrow rail. At the time of replacement of the first pillar of the conveyor, depending on the size of the work machine,
The second pillar is erected so that it can run on a narrow rail and a wide rail, respectively, and the conveyor truck is in a narrow state and an expanded state.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A is a conveyor belt for carrying out the slip, a belt conveyor 1 having a constant width, a flat rectangular conveyor frame 2 on which the belt conveyor 1 is stretched, and both side frame portions 21 of the conveyor frame 2;
It comprises a first pillar 3,3 and a second pillar 4,4 provided on 21. On the other hand, on the bottom surface in the tunnel T, FIG.
As shown in FIG. 5, a narrow rail 5 and a wide rail 6 having the narrow rail 5 arranged at the center are laid in the length direction of the tunnel, and the first pillars 3, 3 of the conveyor truck A are The second pillars 4 and 4 are configured to run on the narrow rail 5 and the second pillars 4 and 4 on the wide rail.

The structure of the conveyor truck A will be described in more detail. The belt conveyor 1 comprises left and right rail portions 5a, 5a of a narrow rail 5.
It has a width substantially equal to the width between them, and the length is formed substantially equal to the length of several toro trucks (three in the figure) to be described later. Parts 21, 21
Is endlessly wound between a driven roller 11 and a driving roller 12 rotatably supported between the front and rear ends thereof via a suitable guide roller (not shown).

The conveyor frame 2 may be formed as a horizontal frame over its entire length. However, as shown in FIG. 1, an appropriate length of the front end side having the driven roller 11 is gradually lowered toward the front. The inclined frame 2A is formed into a
The rear end of 2A is pivotally connected to the front end of the horizontal frame 2B so as to be vertically rotatable 13 and a hydraulic jack 14 is provided between the opposed upper ends of both frames 2A and 2B.
The inclined frame 2A is inclined at a desired angle by the expansion and contraction operation of the hydraulic jack 14. Further, a connecting rod 15 is protruded from the front end of the inclined frame 2A so that the connecting rod 15 is connected to a later-described shroud B in use.

The first pillars 3, 3 and the second pillars 4, 4
The wheels 7 and 8 rotatably mounted on the lower end thereof are mounted on the narrow rail 5 and the wide rail 6, respectively, to support the conveyor frame 2 so as to be able to travel in the tunnel length direction. The first pillars 3 have upper ends of the left and right pillars 3a, 3a (shown in FIG. 3) attached to both side frame portions 21, 21 at the front and rear portions of the horizontal frame 2B of the conveyor frame 2, respectively. While being foldably connected in the length direction, a pair of front and rear second legs 4,
4 is a horizontal frame of the conveyor frame 2 at the upper ends of the left and right pillars.
The two side frame portions 21 at the front and rear ends of the 2B are connected to be openable and closable in the rail width direction, respectively.

The first pillars 3, 3 have left and right pillars 3a, 3a.
The width between them is equal to or slightly wider than the width between the right and left rail portions 5a, 5a of the narrow rail 5, and the height (length) of the conveyor truck A can pass through the internal space of the gantry C described later. The upper ends of the left and right pillars 3a, 3a are pivotally attached to the side frames 21, 21 of the conveyor frame 2 so as to be pivotable in the front-rear direction.
36, rods 3b, 3b project upward from the upper ends of the pillars 3a, 3a, and the rod 3b and the conveyor frame 2
The hydraulic jack 9 is connected to the rod end of the hydraulic jack 9 mounted on the frame portion 21 so that the hydraulic jack 9 is operated so that the standing state is brought into a folded state along the length direction of the frame portion 21 of the conveyor frame 2. . Reference numeral 3c shown in FIG. 3 is a connecting member connecting the lower ends of the pillar portions 3a, 3a, and wheels 7 are attached to both sides of the lower surface.

On the other hand, the second pillars 4, 4 are conveyer frames having a small space in the front-rear direction from the first pillars 3, 3, respectively, so as not to obstruct the folding of the first pillars 3, 3. 2
At the front and rear ends. As shown in FIGS. 4 and 5, the left and right pillars of the second pillars 4, 4 are formed by an upper pillar 4a and a lower pillar 4b that can be stored in the upper pillar 4a. At the same time, the outer end surface of the intermediate member 10 having a fixed width is integrally fixed to the inner surface of the upper end portion of the upper pillar portion 4a, and the vertical cylindrical member 16 is fixed to the inner end of the intermediate member 10 so as to form It is rotatably fitted on a vertical shaft 17 supported between upper and lower brackets 18 and 19 projecting from the side frame portion 21 of the conveyor frame 2.

Furthermore, the lower surface of the conveyor frame 2 and the upper pillar portion
4a and a hydraulic jack 20
By expanding and contracting the rod of 20, the pillars of the second pillars 4, 4 can be opened and closed inward and outward via the intermediate member 10, and when opened, the width between the left and right pillars is increased by the left and right rails of the wide rail 6. Part 6
The width is equal to the width between a and 6a, and the conveyor truck A is configured to be movably supported on the wide rail 6. Also,
In the left and right pillars, the hydraulic jack 22 is inserted in the lower pillar 4b.
(Shown in FIG. 4), and the distal end of the piston rod is connected to the inside of the upper end of the upper pedestal portion 4a.
Operation of the lower pillar from the lower end opening of the upper pillar 4a.
4b is flexible. The height of the pillar 4 when the lower pillar 4b is greatly extended is set to a height at which the shuffler B can pass through the space between the pillars 4 and 4, and the height of the pillar 4 when contracted. The height is set so that the toro cart D can pass through. Reference numeral 23 denotes a hydraulic unit that supplies pressure oil to the hydraulic jacks 9, 14, 20, 22, and the like, and is mounted on the rear end of the conveyor frame 2.

A description will be given of the manner of use of the conveyor belt for carrying out the slip constructed as described above.
When excavating a tunnel, first, as shown in FIG.
The gantry C equipped with the blasting hole punch 24 and the work cage 25 is advanced to the vicinity of the facet t, while the conveyor trolley A is retracted to an appropriate position behind the tunnel which is not affected by the blasting and waits. Keep it.

The gantry C has a pillar member 27 having wheels 35 running on the wide rail 6 fixed to the lower surface of the four corners of a base plate 26 provided with a drilling machine 24 and a working cage 25. The height (length) of the pillar member 27 is made larger than the height of the conveyor truck A when supported on the narrow rail 5 by the first pillar 3, and as shown in FIG. And left and right pillar members 27,
The space 28 enclosed by the spaces 27 is formed so that the conveyor truck A having the above height can pass therethrough.

Then, a plurality of blast holes are drilled in the face t by the punch 24, and when the operation of loading the explosive into the blast holes is completed, the gantry C is removed from the conveyor truck A which is not affected by the blast. After retreating to position, blast. Next, as shown in FIG. 1, a scraping tool 29 for scraping the scrap E excavated by the blast and an upwardly inclined belt conveyor device 30 for transporting the scrap E scraped by the scraping tool 29 to the rear are provided. Is moved forward to the vicinity of the face t, and the conveyor truck A is moved forward to the rear of the shuffler B.

At this time, the shuffler B and the conveyor truck A
1, a bracket 31 is protruded from the lower surface of the upward inclined belt conveyor device 30 of the shuffler B, and the inclined frame 2A of the conveyor truck A is mounted on the bracket 31 as shown in FIG. Are connected to each other so that the conveyor truck A follows the shuffler B and the two are integrally moved forward. The shuffler B is constructed so that its front, rear, left and right wheels 32 run on the narrow rail 5 as shown in FIG.
And lower than the column height of the conveyor truck A when it is supported on the wide rail 6, thereby passing through the space 33 surrounded by the conveyor frame 2 of the conveyor truck A and the left and right pillar portions 3a, 3a. It is formed as possible. A crawler belt 34 whose height can be adjusted vertically by a hydraulic jack or the like with respect to the main body of the shuffler B is provided on both outer sides of the wheels 32 of the shuffler B.

These shuffler B and conveyor trolley A
In order to move the gantry C to the face t side, the gantry C is present in front of the gantry C, so that the gantry C must be replaced with the gantry C. In this exchange work, in order to exchange the gantry C and the conveyor trolley A, the lower pedestal 4b of the second pedestal 4, 4 of the conveyor trolley A is connected to the upper pedestal 4a.
After the height of the pedestal 4 is made shorter than the height of the first pedestal 3 by contracting inward, the intermediate member 10 is folded by the hydraulic jack 20 so as to overlap the both side frame portions 21, 21 of the conveyor frame 2. As a result, the second pillars 4 are suspended from both side frame parts 21 of the conveyor frame 2 in a downward direction, and the first pillars 3 are narrowed as shown in FIG. It is assumed that it is mounted on the top so that it can run freely. When the conveyor trolley A is moved forward in this state, the conveyor trolley A passes through the inside of the gate-shaped space 28 of the gantry C, and the gantry C can be switched back and forth.

Next, in order to position the shuffler B on the front side of the conveyor truck A, the intermediate member 10 of the second leg 4, 4 of the conveyor truck A is moved by the extension of the hydraulic jack 20, as shown in FIG. After being opened in a direction perpendicular to both side frame portions 21 and 21 of the bogie A, the width between the left and right pillar portions is set to the width interval between the left and right rail portions 6a and 6a of the wide rail 6, and then the lower pillar portion 4b. Is extended downward, the lower end wheel 8 is placed on the wide rail 6, and the lower pedestal portion is further lowered until the conveyor truck A reaches a predetermined height.
Extend 4b. Then, the first pillars 3, 3 are lifted from the narrow rails 5.
Fold along the length of. Thereafter, if the shuffler B is passed through the gate-shaped space 33 surrounded by the left and right pillars of the conveyor frame 2 and the second pillar 4, the conveyor truck A and the shuffler B can be interchanged. .

After the shuffler B is positioned in front of the conveyor truck A in this manner, the front inclined frame 2A of the conveyor truck A is connected to the shuffler B. At this time, the lower pillars 4b of the second pillars 4, 4 of the conveyor truck A are contracted by a desired length, and the height of the lower space 33 of the conveyor frame 2 is set to a height at which the toro truck D can pass, Thereafter, the conveyor truck A is connected to the shuffler B, and the shuffler B is moved to the vicinity of the face while the conveyor truck A is traveling on the narrow rail 5 and the conveyor truck A is traveling on the wide rail 6.

Then, the scraper E is scraped by the scraper 29 of the shuffler B and is placed on the transport start end of the belt conveyor device 30 while the conveyor truck A is tilted downward from the transport end of the belt conveyor device 30. The slip E is transferred onto the belt conveyor 1 of the frame 2A and is conveyed by the belt conveyor 1 from the inclined frame 2A to the rear end of the horizontal frame 2B.

On the other hand, the gantry C
Are moved forward on the narrow rail 5, and the foremost trolley D is made to enter the space 33 of the conveyor trolley A, and the last trolley D is moved. Is located below the shear discharge end of the belt conveyor 1. In this state, the slip E conveyed by the belt conveyor 1 is loaded into the toro cart D, loaded, and
When is full, the toro truck D is moved backward so as to face below the slip discharge end of the belt conveyor 1. When the slip E is loaded on all the toro trucks D, the toro truck D is driven to the slip discharge portion at the rear of the tunnel to discharge the slip E, and then moved to the conveyor truck A again to load the slip E. I do. The toro truck D is towed by a towing vehicle (not shown) running on the narrow rail 5.

In this manner, when the discharge and removal of the cutting edge E generated by the blasting are completed, the conveyor truck A and the shuffler B are retracted to the rear portion of the tunnel which is not affected by the blasting, and the gantry C is operated by the same operation as described above. And the gantry C is advanced to the vicinity of the face t. Then, using the work cage 25 of the gantry C, the concrete is sprayed on the tunnel wall excavated by the blasting, the erection work is performed, and the blast hole is drilled in the face t in the same manner as described above. After loading the explosive, the gantry C is retracted and blasted, and thereafter, the scraper E is scraped by the shuffler B and the loading of the slip E to the toro truck D by the belt conveyor 1 of the conveyor truck A is performed as described above. Then, the waste E is discharged and removed, and this operation is repeated to excavate the tunnel.

As the tunnel of a certain length is excavated, the narrow rail 5 and the wide rail 6 are sequentially added to the bottom surface of the tunnel, and when the shuffler B is fixed on the narrow rail 5, the narrow rail 5 is shifted to a position near the face t. If it cannot be scraped, the crawler belts 34 on both sides of the shuffler B are moved down to
Is lifted from the narrow rail 5 and the crawler belt 34 is driven to move the shuffler B forward from the front end of the narrow rail 5 to scrape off the shear near the face. When the scraping operation is completed, the shuffler B is retracted onto the narrow rail 5, the crawler belt 34 is moved upward, and the wheels 32 are mounted on the narrow rail 5. The construction of the shotcrete in the above embodiment may be performed by another device.

[0029]

As described above, according to the present invention, a conveyor truck that runs on a rail laid in a tunnel, and has a narrow rail and a center of the narrow rail on the bottom of the tunnel. A first rail that can run on the narrow rail and a second rail that can run on the wide rail are provided on both side frames of the conveyor for slip-out while laying the wide rail in the tunnel length direction.
The first pillar and the second pillar are provided so that the first pillar can be freely folded in the length direction of the conveyor and the second pillar can be extended and contracted and can be opened and closed inward and outward. Is configured to run on the rail, so that the first pillar is folded in the length direction of the conveyor, while the left and right pillars of the second pillar are opened outward and extended. The space below the conveyor between the left and right pedestals of the second pedestal can be increased, so that the conveyor trolley can run on the wide tier through the second pedestal, while on the narrow rail. By passing small machines and various equipment that can travel on the conveyor through the space below the conveyor, it is possible to easily replace the conveyor truck with these small machines and equipment.

Also, the width and height of the entire conveyor truck can be reduced by contracting and folding the second pillar inward while supporting the first pillar on a narrow rail so as to be able to run. The space between large machines such as gantry running on a wide rail can be passed through a conveyor truck, and can be easily replaced with large machines. Accordingly, the first and second pillars of the conveyor are erected so that they can run on narrow rails and wide rails, respectively, so that the conveyor truck is in a narrow state.
It is possible to easily and safely replace various machines in a narrow tunnel in an enlarged state, and to shorten the construction period of the tunnel construction.

[Brief description of the drawings]

FIG. 1 is a simplified side view of a conveyor truck connected to a shuffler,

FIG. 2 is a simplified side view of a state where a face is perforated by a gantry,

FIG. 3 is a longitudinal sectional front view showing a state in which a gantry and a conveyor cart are replaced.

FIG. 4 is a longitudinal sectional front view showing a state where a shuffler and a conveyor cart are exchanged.

FIG. 5 is a longitudinal sectional front view showing a state where a toro truck is arranged in a space of the conveyor truck.

[Explanation of symbols]

 A Conveyor Truck 1 Belt Conveyor 2 Conveyor Frame 3 First Pillar 4 Second Pillar 5 Narrow Rail 6 Wide Rail B Shafuroda C Gantry D Toro Truck

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akira Ide 2-2-2 Matsuzaki-cho, Abeno-ku, Osaka-shi Okumura Gumi Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) E21F 13/02

Claims (2)

(57) [Claims] Claims 1. A conveyor truck for carrying out a slip running on a rail laid in a tunnel, wherein a narrow rail and a wide rail with the narrow rail as a center portion are laid in a tunnel length direction on a bottom surface of the tunnel. A first pillar capable of traveling on the narrow rail and a second pillar capable of traveling on the wide rail are provided on both side frame portions of the conveyor for carrying out the slip, and the first pillar is arranged in a longitudinal direction of the conveyor. It is characterized in that it is configured to be freely foldable and the second pedestal can be freely extended and retracted and opened and closed in the inward and outward directions so that either one of the first pedestal and the second pedestal travels on a rail. Conveyor cart for picking up waste. 2. The first pillar has an upper end pivotally attached to a side frame of the conveyor so as to be rotatable in the front-rear direction, and a rod projecting upward from the pivot and a frame of the conveyor. The jack is connected to the jack and installed so that it can be raised and folded by the expansion and contraction of the jack. On the other hand, the second pedestal is rotatable at its inner end to the side frame of the conveyor via a vertical shaft. The upper end is fixed to the outer end of the connected intermediate member of a fixed width, and it is divided into upper and lower pillars, and the lower footnote part is configured to be expandable and contractable by jacks on the upper pillar. The conveyor truck for waste discharge according to claim 1, wherein: