JP2020172375A - Stretchable conveyor frame mechanism, tail piece carriage system and extension belt conveyor - Google Patents

Abstract

To provide a stretchable conveyor frame mechanism, a tail piece carriage system, and extension belt conveyor capable of performing changing of a loading position of an object to be transported with a simple configuration.SOLUTION: This stretchable conveyor frame mechanism 100 is the stretchable conveyor frame mechanism 100 for transporting an excavated muck EM, and comprises: a plurality of conveyor roller 2; a taking-up and drawing-out device 4; and a stretchable conveyor frame 1 which has a slender shape and can stretch and in which a plurality of conveyor rollers 2 are installed so as to move in a longitudinal direction. The stretchable conveyor frame 1 is constituted by a single taking-up and drawing-out member which is shortened when housed in the taking-up and drawing-out device 4 and further extended when drawn out from the taking-up and drawing-out device 4.SELECTED DRAWING: Figure 1

Description

The present invention relates to a telescopic conveyor frame mechanism, a tailpiece bogie system and a stretch belt conveyor, and more particularly to a telescopic conveyor frame mechanism, a tailpiece bogie system and a stretch belt conveyor used for transporting an object to be transported such as earth and sand and rocks.

Conventionally, a tailpiece trolley used for transporting an object to be transported such as earth and sand or rock is known (see, for example, Non-Patent Document 1).

The above-mentioned Patent Document 1 discloses a slide-type tailpiece carriage used for transporting an object to be transported such as earth and sand and rocks. The sliding tailpiece carriage includes a self-propelling main body provided with a conveyor frame and a conveyor belt, and a self-propelling sliding portion provided with a conveyor frame and a conveyor belt separate from the conveyor frame and the conveyor belt of the main body. It has. That is, the sliding tailpiece carriage is composed of two transport mechanisms (main body portion and sliding portion) that are independent of each other. The slide portion is configured so that excavation scraps, which are objects to be transported, can be loaded. The slide portion is configured so that the loading position of the excavation slip can be changed by sliding and moving with respect to the main body portion.

Published in NEWS & TOPICS of Nishimatsu Construction Co., Ltd. "Development of" high-speed unloading system "that enables high-speed construction in mountain tunnel construction-Continuous belt conveyor system that can reduce unloading time by up to 30% or more-", [online], [ Searched on April 5, 2019], Internet <URL: https: // www. Nishimatsu. co. jp / news / news. php? no = MjM1>

However, the slide-type tailpiece carriage described in Patent Document 1 has a problem that the device configuration is complicated because it is provided with two transport mechanisms independent of each other in order to change the loading position of the transport object. There is a point.

The present invention has been made to solve the above problems, and one object of the present invention is a telescopic conveyor frame mechanism capable of changing the loading position of an object to be transported by a simple configuration. , Tailpiece carriage system and stretch belt conveyor.

The telescopic conveyor frame mechanism of the present invention is a telescopic conveyor frame mechanism for transporting an object to be transported including at least one of earth and sand and rock, and has a plurality of conveyor rollers, a storage feeding device, and an elongated shape. It is provided with a telescopic conveyor frame in which a plurality of conveyor rollers are movably installed in the longitudinal direction, and the telescopic conveyor frame is shortened as it is stored in the storage feeding device and is shortened as it is stored in the storage feeding device. It is composed of a single storage feeding member that is extended as it is fed.

In the telescopic conveyor frame mechanism of the present invention, by configuring as described above, the telescopic conveyor frame (conveyor belt) composed of a single storage feeding member is extended and shortened by utilizing the storage feeding device. , The loading position of the object to be transported can be changed. Therefore, as compared with the conventional configuration having two transport mechanisms independent of each other, the loading position of the transport object can be changed by the single transport mechanism that extends and shortens the single storage feeding member. The loading position of the object to be transported can be changed by a simple configuration. Further, when two transport mechanisms independent of each other are provided as in the conventional case, it is necessary to align the two transport mechanisms when changing the loading position of the transport object. On the other hand, in the present invention, by providing the single transport mechanism as described above, the conventional alignment is not required, so that the loading position of the transport target can be easily changed.

In the telescopic conveyor frame mechanism, preferably, the storage and feeding member includes a winding and feeding member capable of being wound and unwound, and the storage and feeding device winds and unwinds the winding and feeding member. Includes equipment. With this configuration, the take-up and take-out member can be stored and shortened by taking up the take-up and take-out member, so that the take-up and take-out member can be easily shortened.

In the telescopic conveyor frame mechanism, preferably, the plurality of conveyor rollers hit the carrier roller, the first conveyor roller having the return roller, the carrier roller, the return roller, and the end of the conveyor belt in the lateral direction. It includes both a second conveyor roller having a meandering correction roller that corrects the meandering of the conveyor belt by contacting it. With this configuration, even if the conveyor belt meanders when extending or shortening the telescopic conveyor frame, the meandering correction roller can reliably correct the meandering.

In the telescopic conveyor frame mechanism, preferably, when the telescopic conveyor frame is unwound by the storage and feeding device, a plurality of conveyor rollers are deployed apart from each other, and when the telescopic conveyor frame is stored by the storage and feeding device, a plurality of conveyors are used. The rollers are configured to be placed close to each other. With this configuration, a plurality of conveyor rollers can be automatically deployed simply by feeding out the telescopic conveyor frame, and a plurality of conveyor rollers are automatically arranged close to each other simply by storing the telescopic conveyor frame. be able to. That is, a plurality of conveyor rollers can be easily deployed and placed in close proximity.

In this case, preferably, by connecting each of the conveyor rollers adjacent to each other, when the plurality of conveyor rollers are separated from each other, a conveyor roller connecting material for arranging the plurality of conveyor rollers at substantially equal intervals is further provided. Be prepared. With this configuration, when a plurality of conveyor rollers are separated from each other, the plurality of conveyor rollers can be arranged at substantially equal intervals by a simple configuration in which each of the conveyor rollers is connected.

The tailpiece trolley system of the present invention is a tailpiece trolley system for transporting excavation scraps used in a tunnel constructed by rupture excavation, and is simply equipped with a telescopic conveyor frame mechanism and a telescopic conveyor frame mechanism. A tailpiece carriage including one moving carriage section is provided, and the telescopic conveyor frame mechanism has a plurality of conveyor rollers, a storage feeding device, and an elongated shape, so that the plurality of conveyor rollers can be moved in the longitudinal direction. The telescopic conveyor frame, including the installed telescopic telescopic conveyor frame, is shortened as it is stowed in the stowage feeding device and extended as it is unloaded from the stowage feeding device. It is composed of members.

In the tailpiece carriage system of the present invention, the loading position of the object to be conveyed can be changed by a simple configuration, similarly to the telescopic conveyor frame mechanism, by configuring as described above.

In the tailpiece bogie system, preferably, the telescopic conveyor frame is extended to the face side as the moving bogie portion advances toward the face side during loading and transporting of excavation scraps, and at the time of blasting excavation, the wellhead of the moving bogie portion. It is configured to be shortened to the wellhead side as it recedes to the side. With this configuration, the tailpiece trolley can be placed at a position relatively close to the face where the object to be transported can be easily loaded during the loading and transporting of excavation scraps, and the position is not affected by blasting during blasting excavation. The tailpiece trolley can be evacuated. In the above-mentioned conventional sliding tailpiece carriage, a protective wall such as a balloon is installed between the tailpiece carriage and the face during blasting excavation. On the other hand, in the present invention, the tailpiece carriage can be retracted (a safe distance can be secured between the face and the tailpiece carriage), so that it is not necessary to install such a protective wall. It becomes. Further, in general, since the crusher and the tailpiece carriage are always arranged about 60 m behind the face (a position relatively far from the face), the traveling time of the excavator loader (transport vehicle) becomes long. In the present invention, as described above, the tailpiece carriage can be arranged at a position relatively close to the face, so that the traveling time of the excavator loader (transport vehicle) can be shortened.

The stretching belt conveyor of the present invention is a stretching belt conveyor for transporting excavation scraps used in a tunnel constructed by rupture drilling, and includes a telescopic conveyor frame mechanism, a head pulley device arranged on the wellhead side, and a head pulley device. It comprises a tailpiece carriage including a single moving carriage section on which the telescopic conveyor frame mechanism is mounted, the telescopic conveyor frame mechanism having a plurality of conveyor rollers, a storage feeding device, and an elongated shape, and a plurality of. The telescopic conveyor frame includes a telescopic telescopic conveyor frame in which the conveyor rollers are movably installed in the longitudinal direction, and the telescopic conveyor frame is shortened as it is stored in the storage feeding device and is fed out from the storage feeding device. It is composed of a single storage feeding member that is extended accordingly.

By configuring the stretch belt conveyor of the present invention as described above, it is possible to change the loading position of the object to be conveyed by a simple configuration as in the telescopic conveyor frame mechanism.

According to the present invention, as described above, it is possible to provide a telescopic conveyor frame mechanism, a tailpiece carriage system, and a stretch belt conveyor capable of changing the loading position of an object to be conveyed by a simple configuration.

It is a schematic diagram which showed the outline of the extension belt conveyor provided with the telescopic conveyor frame mechanism and the tail piece carriage according to embodiment. It is a perspective view which showed the telescopic conveyor frame mechanism by embodiment. It is a front view which showed the 2nd conveyor roller of the expansion and contraction conveyor frame mechanism by embodiment. It is a figure for demonstrating the 1st (7) construction procedure using the telescopic conveyor frame mechanism by embodiment. It is a figure for demonstrating the 2nd (6) construction procedure which used the telescopic conveyor frame mechanism by embodiment. It is a figure for demonstrating the 3rd (5) construction procedure which used the telescopic conveyor frame mechanism by embodiment. It is a figure for demonstrating the 4th construction procedure using the telescopic conveyor frame mechanism by embodiment. It is a figure which showed the telescopic conveyor frame mechanism by the modification of embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Embodiment]
The telescopic conveyor frame mechanism 100 according to the embodiment will be described with reference to FIGS. 1 to 7.

As shown in FIG. 1, the telescopic conveyor frame mechanism 100 is mounted on the tailpiece bogie T (moving bogie portion T1 described later), and the tailpiece bogie system S is constructed together with the tailpiece bogie T. The tailpiece bogie T is a device for transporting excavation slip EM used in a tunnel constructed by blasting excavation. Excavation EM is rock, earth and sand excavated from the ground when excavating a tunnel. The excavation slip EM is an example of the “object to be transported” within the scope of the claims.

(Outline of the structure of the stretching belt conveyor)
The telescopic conveyor frame mechanism 100 and the tailpiece bogie T are one component of the stretching belt conveyor E. The stretch belt conveyor E includes a head pulley device E1, a conveyor belt E2, a belt storage E3, a belt drive device E4, and a fixed conveyor frame E5 in addition to the telescopic conveyor frame mechanism 100 and the tailpiece carriage T. There is.

The extension belt conveyor E is a conveyor belt for transporting the excavation slip EM between the tail piece T21 of the tail piece bogie T arranged on the face (excavation surface) side and the head pulley device E1 arranged on the wellhead side. It is a transportation system that winds E2. While the head pulley device E1 is fixedly installed near the wellhead, the tailpiece bogie T moves in the front-rear direction in the tunnel due to blasting excavation. The conveyor belt E2 is an annular endless belt.

In the following description, the vertical direction (vertical direction) is the Z direction, the extending direction of the conveyor belt E2 is the X direction, and the Z direction and the direction orthogonal to the X direction are the Y directions. Of the X directions, the excavation direction, which is the direction toward the face side, is the X1 direction, and the transport direction of the excavation slip EM, which is the direction toward the wellhead side, is the X2 direction.

The belt drive device E4 is configured to drive one conveyor belt E2 wound around each pair of pulleys E3a and E3b of the tail piece carriage T (tail piece T21), the head pulley device E1, and the belt storage E3. Has been done. The pairs of pulleys E3a and E3b are towed from the left and right by hydraulic cylinders and the like. The belt drive device E4 is configured to circulate the conveyor belt E2 by, for example, combining an electric motor and a speed reducer to rotationally drive the drive pulley E4a around which the conveyor belt E2 is wound. The belt storage E3 stores the conveyor belt E2, and when the tail piece carriage T is stretched, the belt storage E3 pays out the conveyor belt E2 in a state where tension is applied to the conveyor belt E2.

Among the devices (tailpiece carriage T, head pulley device E1, belt storage E3, belt drive device E4, conveyor belt E2) included in the stretch belt conveyor E, the fixed conveyor frame E5 is placed on the conveyor belt via the conveyor roller E51. Supports E2. The conveyor roller E51 includes a carrier roller and a return roller.

As shown in FIG. 2, the fixed conveyor frame E5 is composed of a pair of beam members E52 extending linearly in the X direction and lining up in the Y direction. The fixed conveyor frame E5 is configured to extend long in the X direction by connecting a plurality of pair of beam members E52 in the X direction. The fixed conveyor frame E5 is provided in substantially the entire area of the tunnel except the vicinity of the face. A conveyor roller E51 having a carrier roller and a return roller is installed on the pair of beam members E52. The carrier roller and the return roller support two belt portions of the conveyor belt E2.

As shown in FIG. 1, the two belt portions of the conveyor belt E2 here are the carrier portion E2a on which the excavation slip EM is placed and headed from the tail piece T21 to the head pulley device E1 and the head pulley device E1. It means the return portion E2b returning to the tail piece T21. The carrier portion E2a is formed in a boat shape by a plurality of rollers (see FIG. 3), but can also be formed by rollers extending in the horizontal direction (Y direction). Further, the carrier portion E2a is arranged directly above the return portion E2b so as to overlap the return portion E2b. The return portion E2b of the conveyor belt E2 is supported by one return roller extending in the horizontal direction (Y direction).

A fixed conveyor frame E5 and a telescopic conveyor frame 1 are provided in a section between each device such as the tail piece bogie T and the head pulley device E1 shown in FIG. 1 to circulate and support the conveyor belt E2. .. The fixed conveyor frame E5 arranged between these devices is formed to have a predetermined length, the ends in the X direction are connected to each other, and the fixed conveyor frame E5 is fixedly installed on the tunnel wall via the knee brace K in the tunnel. Therefore, when the tail piece bogie T advances with excavation, the conveyor tail portion T2 advances with respect to the existing fixed conveyor frame E5, and the rear end portion (X2 direction end portion) of the conveyor tail portion T2 and the fixed conveyor frame. A gap (gap) is created between the E5 and the E5. In the tail piece bogie T, every time the tail piece bogie T moves forward, an extension (additional) fixed conveyor frame E5 is assembled in the gap on the intermediate frame installation frame T3 of the tail piece bogie T, and the existing fixed conveyor frame E5 is connected so as to extend to the face side (X1 direction side).

As shown in FIG. 1, the generated excavation scrap EM is collected by a transport vehicle H such as a wheel loader, crushed into small pieces to a size that can be transported by a self-propelled crusher C, and then loaded onto the tailpiece carriage T. Is done.

The excavation slip EM loaded on the conveyor belt E2 of the tailpiece trolley T circulates and drives the conveyor belt E2 by the belt drive device E4 to reach the head pulley device E1 installed near the wellhead outside the tunnel. Is continuously transported as it moves.

(Structure of tailpiece trolley)
The tailpiece bogie T shown in FIG. 4 is a device for transporting excavation scraps used in a tunnel constructed by blasting excavation. The tailpiece bogie T, in principle, advances toward the face side (X1 direction side) together with the transport vehicle H and the crusher C along with the blasting excavation (extension of the tunnel).

The tail piece bogie T includes a single moving bogie portion T1, a conveyor tail portion T2, and an intermediate frame installation mount T3.

Here, the telescopic conveyor frame mechanism 100 is mounted on the moving carriage portion T1. The telescopic conveyor frame mechanism 100 is a face-side end E5a (see FIG. 2) of a fixed conveyor frame E5 (fixed conveyor frame E5 located closest to the face side of the plurality of fixed conveyor frames E5) fixed to the pit wall. It is configured to be connectable to the end in the X1 direction). That is, the telescopic conveyor frame mechanism 100 is arranged between the conveyor tail portion T2 and the fixed conveyor frame E5. The telescopic conveyor frame mechanism 100 expands and contracts (extends and shortens) in the front-rear direction (X direction) between the tailpiece bogie T and the fixed conveyor frame E5 as the tailpiece bogie T (moving bogie portion T1) moves forward and backward. ) Is configured to.

In short, the telescopic conveyor frame mechanism 100 expands and contracts (extends and shortens) in the front-rear direction even if the tailpiece bogie T moves forward and backward, so that the conveyor belt is placed between the tailpiece bogie T and the fixed conveyor frame E5. It is configured to be able to continue to support E2. Details of the telescopic conveyor frame mechanism 100 will be described later.

The tailpiece bogie T can secure a distance from the face that is not affected by blasting by shortening the telescopic conveyor frame mechanism 100 and retracting it to the wellhead side during blasting excavation. Is. Therefore, at the time of blasting excavation, a protective wall such as a balloon generally used for suppressing the influence of blasting is not installed between the tailpiece bogie T and the face. That is, at the time of blasting excavation, the tailpiece bogie T and the face are held in a state of being spatially communicated in the tunnel.

<Structure of moving trolley part>
As shown in FIG. 4, the mobile bogie unit T1 is a single (one) configuration in which various configurations constituting the tailpiece bogie T are assembled. That is, the mobile bogie portion T1 movably supports the entire tailpiece bogie T. A conveyor tail portion T2, an intermediate frame installation stand T3, and a telescopic conveyor frame mechanism 100 are mounted on the moving carriage portion T1. In addition, in this specification, a "moving carriage part" means a support structure configured to be movable, and is not limited to the structure provided with wheels.

The moving bogie portion T1 includes a bogie frame T11, a moving mechanism T12, and an outrigger T13 that fixes the tailpiece bogie T at a predetermined position.

The bogie frame T11 is a skeleton portion of the tailpiece bogie T, and various configurations are assembled. The carriage frame T11 is movably supported by a moving mechanism T12.

The carriage frame T11 supports the conveyor tail portion T2 on the front side (X1 direction side) and the intermediate frame installation frame T3 on the rear side (X2 direction side). Further, the carriage frame T11 supports the telescopic conveyor frame mechanism 100 (conveyor roller stand 7 and take-up and feeding device 4 described later) between the conveyor tail portion T2 and the intermediate frame installation stand T3 in the front-rear direction. The take-up and unwinding device 4 is an example of a "storage and unwinding device" within the scope of claims.

The moving mechanism T12 is provided below the carriage frame T11 and supports the carriage frame T11. The moving mechanism T12 is a crawler type (infinite track type) moving mechanism, and includes a pair of crawlers provided in the width direction (Y direction), a hydraulic motor for driving the crawlers, and the like. The tailpiece bogie T is configured to be self-propelled (running without depending on external power) by the moving mechanism T12.

The moving mechanism T12 may be configured to travel by itself by, for example, a tire system or a rail & wheel system. Further, the moving mechanism T12 may be configured to travel by being towed or propelled by an external device. The moving mechanism T12 when traveling by an external device may be, for example, a skid type (sled) in addition to the above-mentioned crawler type, tire type, rail & wheel type.

<Conveyor tail configuration>
As shown in FIG. 4, the conveyor tail portion T2 includes a tail piece T21, a hopper T22, a roller T23 (carrier roller, return roller, impact roller), and an angle adjusting mechanism T24.

The angle adjusting mechanism T24 supports the entire conveyor tail portion T2 so as to be tiltable. As a result, the angle adjusting mechanism T24 is configured so that the belt level (height position) of the conveyor belt E2 on the wellhead side can be adjusted while maintaining the height position of the tail piece T21.

<Structure of intermediate frame installation stand>
The intermediate frame installation stand T3 is configured to temporarily support a new fixed conveyor frame E5 that has not yet been fixed to the pit wall by knee brace K (see FIG. 2) when the fixed conveyor frame E5 is extended. There is. The intermediate frame installation stand T3 is composed of, for example, a plurality of hydraulic cylinders that can be expanded and contracted in the vertical direction so that the height position of supporting the fixed conveyor frame E5 can be adjusted. When a new fixed conveyor frame E5 is installed on the intermediate frame installation frame T3, the connection between the telescopic conveyor frame mechanism 100 and the existing fixed conveyor frame E5 is temporarily disconnected. Details will be described later.

(Structure of telescopic conveyor frame mechanism)
As shown in FIG. 2, the telescopic conveyor frame mechanism 100 includes a telescopic conveyor frame 1 composed of a take-up and take-out member, a plurality of (eight) conveyor rollers 2, a conveyor roller connecting member 3, and a take-up and pay-out device. 4 (winch), a front fixing member 5, a rear fixing member (end connecting portion 6), and a conveyor roller stand 7 (storage stand) are provided. The take-up and unwinding device 4 and the conveyor roller stand 7 are directly fixed to the tailpiece bogie T (see FIG. 4).

<Structure of telescopic conveyor frame>
As shown in FIG. 2, the telescopic conveyor frame 1 (winding and feeding member) is formed of a wire rope that can be wound and unwound. The telescopic conveyor frame 1 has an elongated shape with the X direction as the longitudinal direction.

A plurality of conveyor rollers 2 are installed on the telescopic conveyor frame 1. The plurality of conveyor rollers 2 are configured to be movable in the longitudinal direction (X direction) of the telescopic conveyor frame 1. The telescopic conveyor frame 1, the conveyor roller connecting member 3, the take-up and feeding device 4, the rear fixing member (end connecting portion 6), and the front fixing member 5 are both ends of the conveyor roller 2 in the Y direction, respectively. It is a pair of configurations provided near the part.

An end connection portion 6 is provided at the rear end portion (end portion in the X2 direction) of the telescopic conveyor frame 1 on the wellhead side. The end connection portion 6 is connected (fixed) to the fixed conveyor frame E5 by engaging (sandwiching) the engaging portion E5b provided at the end E5a on the face side of the fixed conveyor frame E5. It is configured in.

The front end portion (X1 direction end portion) on the face side of the telescopic conveyor frame 1 is connected to the take-up and feeding device 4. The front side portion of the telescopic conveyor frame 1 including the front end portion on the face side is wound (stored) by the take-up and feeding device 4. The telescopic conveyor frame 1 extends in the X direction at substantially the same height position except for the portion wound by the take-up and unwinding device 4. Specifically, the telescopic conveyor frame 1 is arranged at substantially the same height as the fixed conveyor frame E5 except for the portion wound by the take-up and unwinding device 4.

The telescopic conveyor frame 1 is shortened in the X direction as it is wound (stored) in the take-up and take-out device 4 from the front end side on the face side, and is X as it is taken out from the take-up and take-out device 4. It is configured to extend in the direction.

Since the rear end of the telescopic conveyor frame 1 is connected to the fixed conveyor frame E5 by the end connecting portion 6, the telescopic conveyor frame 1 is wound (stored) by the take-up feeding device 4. When shortened in the X direction, the front end on the face side comes closer to the fixed conveyor frame E5 (rear end on the wellhead side). On the contrary, when the telescopic conveyor frame 1 is extended in the X direction as it is unwound from the take-up and unwinding device 4, the front end on the face side is further separated from the fixed conveyor frame E5 (rear end on the wellhead side). It will be.

<Conveyor roller configuration>
As shown in FIG. 2, the plurality (8) conveyor rollers 2 include a plurality (4) first conveyor rollers 21 and a plurality (4) second conveyor rollers 22. The first conveyor roller 21 and the second conveyor roller 22 are alternately arranged one by one in the X direction.

The plurality (8) conveyor rollers 2 are arranged at substantially equal intervals when the telescopic conveyor frame 1 is unwound by the take-up and unwinding device 4, and the telescopic conveyor frame 1 is housed by the take-up and unwinding device 4. When doing so, they are placed close to each other. Details will be described later.

<Structure of 1st conveyor roller>
The first conveyor roller 21 includes a carrier roller 23a, a return roller 23b, and a support frame 23c that rotatably supports the carrier roller 23a and the return roller 23b. These configurations are the same as those of the conveyor roller E51 installed on the fixed conveyor frame E5.

Further, the first conveyor roller 21 includes a tubular portion 23d provided at the lower end of the support frame 23c. The tubular portion 23d has a through hole extending in the X direction. A pair of tubular portions 23d are provided near both ends of the first conveyor roller 21 in the Y direction. A telescopic conveyor frame 1 (wire rope) is inserted through the tubular portion 23d. The first conveyor roller 21 is supported by the telescopic conveyor frame 1 inserted through the tubular portion 23d, so that the movement in the X direction is guided.

Further, the first conveyor roller 21 includes a conveyor roller connecting member mounting portion 23e provided so as to project outward in the Y direction of the support frame 23c. The conveyor roller connecting member 3 is attached to the conveyor roller connecting member attaching portion 23e.

<Structure of 2nd conveyor roller>
Similar to the first conveyor roller 21, the second conveyor roller 22 includes a carrier roller 23a, a return roller 23b, a support frame 23c that rotatably supports the carrier roller 23a and the return roller 23b, a tubular portion 23d, and the like. It is provided with a conveyor roller connecting member mounting portion 23e.

Further, as shown in FIGS. 2 and 3, the second conveyor roller 22 sandwiches the conveyor belt E2 (E2a) (see FIG. 3) on the carrier roller 23a in the lateral direction (Y direction) of the conveyor belt E2. ) Is provided with a pair of meandering correction rollers 24a provided at both ends. The meandering correction roller 24a has a function of correcting the meandering of the conveyor belt E2 by contacting the conveyor belt E2 (E2a) when the conveyor belt E2 meanders.

Further, the second conveyor roller 22 includes a pair of meandering correction rollers 24b (which are provided at both ends of the conveyor belt E2 in the lateral direction (Y direction) so as to sandwich the conveyor belt E2 (E2b) on the return roller 23b. (See FIG. 3). The meandering correction roller 24b has a function of correcting the meandering of the conveyor belt E2 by contacting the end portion of the conveyor belt E2 (E2b) in the lateral direction (Y direction).

<Conveyor roller connecting material configuration>
As shown in FIG. 2, a plurality of conveyor roller connecting members 3 are provided. The conveyor roller connecting member 3 is formed of a wire rope. The lengths of the plurality of conveyor roller connecting members 3 are equal to each other. As described above, the conveyor roller connecting member 3 is attached to the conveyor roller connecting member attaching portion 23e of the conveyor roller 2. The conveyor roller connecting member 3 connects the conveyor rollers 2 (the first conveyor roller 21 and the second conveyor roller 22) adjacent to each other in the X direction.

The conveyor roller connecting member 3 connects each of the conveyor rollers 2 adjacent to each other so that the telescopic conveyor frame 1 is unwound from the take-up and feeding device 4 to separate the plurality of conveyor rollers 2 from each other. It has a function of arranging 2 at substantially equal intervals. That is, the adjacent conveyor rollers 2 are not separated by more than the length of the conveyor roller connecting member 3. In short, the conveyor roller connecting member 3 has a function of determining the maximum separation distance between adjacent conveyor rollers 2.

<Structure of front fixing member and rear fixing member>
The front fixing member 5 shown in FIG. 2 is located in the X direction with respect to the tail piece carriage T (see FIG. 6) of the conveyor roller 2 located at the head end (end on the X1 direction side) on the face side of the plurality of conveyor rollers 2. It is configured to be fixed in position. As an example, the front fixing member 5 is formed by a wire rope connecting the leading conveyor roller 2 and the tailpiece carriage T.

The rear fixing member is configured to fix the position of the conveyor roller 2 located at the tail end (end on the X2 direction side) of the plurality of conveyor rollers 2 in the X direction with respect to the fixed conveyor frame E5. ing. Specifically, the rear fixing member is composed of an end connecting portion 6. That is, the rearmost conveyor roller 2 is configured so that it can be directly fixed (connected) to the end connection portion 6.

<Structure of take-up and feeding device>
As shown in FIG. 4, the take-up and unwinding device 4 is arranged on the face side (X1 direction side) of the intermediate frame installation stand T3 of the tail piece bogie T. The take-up and unwinding device 4 has a structure similar to that of a winch.

The take-up and unwinding device 4 includes a drive device 41 including an electric motor, and a take-up and unwinding device main body 42 that is rotated by the drive device 41 and around which the telescopic conveyor frame 1 (wire rope) is wound. The height position of the take-up / unwinding device main body 42 may be adjusted so as to be adjustable.

The drive device 41 is configured to pull the telescopic conveyor frame 1 by a preset tension so that the telescopic conveyor frame 1 does not sag downward when the telescopic conveyor frame 1 expands and contracts (extends and shortens). Has been done. The set tension does not necessarily have to be constant, and may fluctuate so that the longer the telescopic conveyor frame 1 is, the larger the tension is.

Here, in the present embodiment, adjacent conveyor rollers are connected by the conveyor roller connecting member 3, and the leading and trailing conveyor rollers are connected by the front fixing member 5 and the rear fixing member (end connecting portion 6), respectively. When the telescopic conveyor frame 1 is unwound by the take-up and unwinding device 4 in a state where the 2 is fixed (a state in which the telescopic conveyor frame 1 can be expanded and contracted (hereinafter referred to as an expandable state)). The plurality of conveyor rollers 2 are deployed so as to be separated from each other at substantially equal intervals, and the plurality of conveyor rollers 2 are arranged close to each other when they are housed by the take-up and feeding device 4.

Specifically, in the telescopic state, the telescopic conveyor frame mechanism 100 pays out the telescopic conveyor frame 1 (wire rope) by the take-up and unwinding device 4 as the tailpiece trolley T advances toward the face side, thereby causing the conveyor roller. A plurality of conveyor rollers 2 connected to each other by a connecting member 3 are automatically separated from each other at substantially equal intervals in order from the rear conveyor rollers 2 to be deployed.

Further, in the telescopic state, the telescopic conveyor frame mechanism 100 winds (stores) the telescopic conveyor frame 1 (wire rope) by the take-up feeding device 4 as the tailpiece trolley T retracts toward the wellhead side. , The plurality of conveyor rollers 2 connected to each other by the conveyor roller connecting member 3 are automatically arranged in close proximity (including contact) in order from the front conveyor roller 2.

As described above, the telescopic conveyor frame mechanism 100 can arrange (store) a plurality of conveyor rollers 2 in close proximity to each other and has a simple configuration. Therefore, when the tunnel excavation work is completed, the telescopic conveyor frame mechanism 100 has a simple structure. Can be stored in a relatively small storage space.

<Conveyor roller stand configuration>
As shown in FIG. 2, the conveyor roller stand 7 is composed of a plurality of rollers arranged in the X direction. The conveyor roller stand 7 supports the tubular portion 23d of the conveyor roller 2 from below on the tailpiece bogie T (see FIG. 4) so that the conveyor roller 2 can be smoothly moved in the X direction. .. The conveyor roller stand 7 is a conveyor on the tailpiece carriage T when the telescopic conveyor frame 1 (wire rope) is wound by the take-up feeding device 4 and the plurality of conveyor rollers 2 are arranged close to each other. It also has a function of guiding the movement of the roller 2 in the X direction. In addition, in FIGS. 4 to 7, the conveyor roller stand 7 is schematically shown.

(Operation of telescopic conveyor frame mechanism)
The operation of the telescopic conveyor frame mechanism 100 will be described with reference to FIGS. 4 to 7. The explanation will be given in order according to the first to seventh construction procedures.

<First construction procedure>
First, in the first construction procedure shown in FIG. 4, the tailpiece bogie T on which the telescopic conveyor frame mechanism 100 is mounted is fixed conveyor frame E5 (fixed conveyor frame E5 located closest to the face side among the plurality of fixed conveyor frames E5). It is arranged at a position (opposite position) near the end portion E5a (end portion in the X1 direction) on the face side of the.

In this state, the telescopic conveyor frame mechanism 100 is not connected (fixed) to the fixed conveyor frame E5, and all the conveyor rollers 2 are arranged close to each other (including abutment) on the conveyor roller stand 7. ing.

<Second construction procedure>
Next, in the second construction procedure shown in FIG. 5, the telescopic conveyor frame 1 (wire rope) is unwound from the take-up and unwinding device 4 (winch), and the end connecting portion 6 is connected to the fixed conveyor frame E5. , The telescopic conveyor frame 1 is extended in the X direction.

In this state, as in the first construction procedure, all the conveyor rollers 2 are still arranged close to each other (including contact) on the conveyor roller stand 7.

<Third construction procedure>
Next, in the third construction procedure shown in FIG. 6, the rearmost (end in the X2 direction) conveyor roller 2 is moved in the X2 direction and fixed to the end connecting portion 6 (rear fixing member). As a result, the position of the rearmost conveyor roller 2 in the X direction is substantially fixed. At this time, the conveyor roller 2 adjacent to the X1 direction side connected to the rearmost conveyor roller 2 via the conveyor roller connecting member 3 and further connected to the conveyor roller 2 via the conveyor roller connecting member 3. A part of the conveyor rollers 2 such as the conveyor rollers 2 adjacent to the X1 direction side are arranged at substantially equal intervals in the X direction.

The conveyor roller 2 at the head (end in the X1 direction) is always fixed to the tailpiece carriage T via the front fixing member 5 (for example, a wire rope). Therefore, the relative position of the leading conveyor roller 2 with respect to the tail piece bogie T in the X direction does not change substantially. When the third construction procedure is completed, the telescopic conveyor frame mechanism 100 is in the stretchable state described above.

The distance between the tailpiece bogie T and the fixed conveyor frame E5 in this state in the X direction is D1, and the size d1 in the X direction of the telescopic conveyor frame mechanism 100.

<4th construction procedure>
Next, in the fourth construction procedure shown in FIG. 7, the tailpiece bogie T is moved (advanced) to the face side (X1 direction side), and the telescopic conveyor frame 1 is unwound by the take-up and unwinding device 4. At this time, along with the tailpiece bogie T, the transport vehicle H (see FIG. 1) and the crusher C (see FIG. 1) are also moved to the face side (X1 direction side).

In this state, the distance between the tailpiece carriage T and the fixed conveyor frame E5 in the X direction is D2, which is larger than D1 (D2> D1), and the size of the telescopic conveyor frame mechanism 100 in the X direction is larger than d1. It becomes a large d2 (d2> d1). Here, when the number of conveyor rollers 2 is n (8) and the maximum pitch between adjacent conveyor rollers 2 (≈ the length when the conveyor roller connecting members 3 are arranged substantially linearly) is L. d2 is at least greater than (n-1) × L.

<Fifth construction procedure>
Next, in the fifth construction procedure shown in FIG. 6, the tailpiece bogie T is moved (retracted) to the wellhead side (X2 direction side), and the telescopic conveyor frame 1 is wound (stored) by the take-up and unwinding device 4. Will be). At this time, along with the tailpiece bogie T, the transport vehicle H and the crusher C are also moved to the wellhead side (X1 direction side). That is, the tailpiece bogie T is moved away from the face. In this retracted state, blasting excavation is performed without providing a protective wall such as a balloon between the face and the tailpiece bogie T.

<6th construction procedure>
Next, in the sixth construction procedure shown in FIG. 5, the connection (fixation) of the rearmost (end in the X2 direction) to the end connection portion 6 (rear side fixing member) of the conveyor roller 2 is released. Then, all the conveyor rollers 2 are arranged on the conveyor roller stand 7 again. As a result, a space is secured on the intermediate frame installation stand T3. That is, in the X direction, the state in which the intermediate frame installation frame T3 and the telescopic conveyor frame mechanism 100 overlap each other is eliminated. As a result, a space for installing the new fixed conveyor frame E5 on the intermediate frame installation stand T3 is secured.

<7th construction procedure>
Next, in the seventh construction procedure shown in FIG. 4, a new fixed conveyor frame E5 is installed on the intermediate frame installation frame T3. That is, the fixed conveyor frame E5 is stretched.

In each of the above construction procedures, an example in which the telescopic conveyor frame mechanism 100 is extended to the maximum extent is shown, but the construction is not limited to such an example. For example, various construction procedures can be considered, such as gradually increasing the extension length of the expansion / contraction conveyor frame mechanism 100 while repeatedly moving the expansion / contraction conveyor frame mechanism 100 back and forth.

(Effect of embodiment)
In this embodiment, the following effects can be obtained.

In the present embodiment, as described above, the excavation slip is performed by extending and shortening the telescopic conveyor frame 1 (conveyor belt E2) composed of a single take-up and take-out member by using the take-up and take-out device 4. The loading position of the EM can be changed. Therefore, the loading position of the excavation slip EM can be changed by a single transport mechanism that extends and shortens a single take-up and feed member, as compared with the conventional configuration having two transport mechanisms that are independent of each other. , The loading position of the excavation scrap EM can be changed by a simple configuration. Further, when two transport mechanisms independent of each other are provided as in the conventional case, it is necessary to align the two transport mechanisms when changing the loading position of the excavation slip EM. On the other hand, in the present invention, by providing the single transport mechanism as described above, the conventional alignment is not required, so that the loading position of the excavation slip EM can be easily changed.

In the present embodiment, as described above, the take-up and take-out member is used to take up and take out the take-up and take-out member. As a result, the take-up and take-out member can be easily shortened because it can be stored and shortened by taking up the take-up and take-out member by using the take-up and take-out device 4.

In the present embodiment, as described above, the plurality of conveyor rollers 2 are short of the first conveyor roller 21 having the carrier roller 23a and the return roller 23b, the carrier roller 23a, the return roller 23b, and the conveyor belt E2. It includes both a second conveyor roller 22 having meandering correction rollers 24a, 24b that correct the meandering of the conveyor belt E2 by abutting against the manual end. As a result, even if the conveyor belt E2 meanders when the telescopic conveyor frame 1 is extended or shortened, the meandering correction rollers 24a and 24b can reliably correct the meandering.

In the present embodiment, as described above, when the telescopic conveyor frame 1 is unwound by the take-up and unwinding device 4, the plurality of conveyor rollers 2 are deployed apart from each other and are housed by the take-up and unwinding device 4. At that time, the plurality of conveyor rollers 2 are configured to be arranged close to each other. As a result, a plurality of conveyor rollers 2 can be automatically deployed simply by feeding out the telescopic conveyor frame 1, and a plurality of conveyor rollers 2 are automatically arranged close to each other simply by accommodating the telescopic conveyor frame 1. be able to. That is, the plurality of conveyor rollers 2 can be easily deployed and placed close to each other.

In the present embodiment, as described above, by connecting the conveyor rollers 2 adjacent to each other, when the plurality of conveyor rollers 2 are separated from each other, the plurality of conveyor rollers 2 are arranged at substantially equal intervals. The conveyor roller connecting member 3 is further provided. As a result, with a simple configuration in which each of the conveyor rollers 2 is connected, when the plurality of conveyor rollers 2 are separated from each other, the plurality of conveyor rollers 2 can be arranged at substantially equal intervals.

In the present embodiment, as described above, the telescopic conveyor frame 1 is extended to the face side as the moving carriage portion T1 advances toward the face side during loading and transporting of the excavation slip EM, and the moving carriage is extended to the face side during blasting excavation. It is configured to be shortened to the wellhead side as the portion T1 retreats to the wellhead side. As a result, the tailpiece bogie T can be arranged at a position relatively close to the face on which the excavation slip EM can be easily loaded during loading and transportation of the excavation slip EM, and the tail is located at a position where the influence of blasting does not affect during blasting excavation. The piece trolley T can be retracted. In the above-mentioned conventional sliding tailpiece bogie, a protective wall such as a balloon is installed between the tailpiece bogie T and the face during blasting excavation. On the other hand, in the present invention, the tailpiece bogie T can be retracted (a safe distance can be secured between the face and the tailpiece bogie T), so such a protective wall is installed. Is no longer needed. Further, in general, since the crusher and the tailpiece carriage are always arranged about 60 m behind the face (a position relatively far from the face), the traveling time of the excavator loader (transport vehicle) becomes long. In the present invention, as described above, the tailpiece carriage T can be arranged at a position relatively close to the face, so that the traveling time of the excavator loader (transport vehicle H) can be shortened.

[Modification example]
The embodiments disclosed this time should be considered as exemplary in all respects and not restrictive. The scope of the present invention is shown not by the description of the above embodiment but by the scope of claims, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims.

For example, in the above embodiment, an example in which the storage and feeding device of the present invention is configured by a winding and feeding device (winch) is shown, but the present invention is not limited to this. In the present invention, for example, the telescopic conveyor frame mechanism 200 of the modified example shown in FIG. 8 may be configured. Specifically, the telescopic conveyor frame mechanism 200 includes a storage feeding device 204 that arranges and stores the telescopic conveyor frame 1 in a meandering shape by a crossing. Since the storage feeding device 204 has the same configuration as the belt storage E3 (see FIG. 1) described above, the description thereof will be omitted.

Further, in the above embodiment, an example in which the telescopic conveyor frame mechanism is used for transporting excavation scraps in a tunnel constructed by blasting excavation is shown, but the present invention is not limited to this. In the present invention, for example, the telescopic conveyor frame mechanism may be used to transport earth and sand, rocks, etc. outside the mine. That is, it is not necessary to mount the telescopic conveyor frame mechanism on the tailpiece carriage and use it.

Further, in the above embodiment, an example in which the telescopic conveyor frame is composed of a wire rope is shown, but the present invention is not limited to this. In the present invention, the telescopic conveyor frame may have a configuration other than the wire rope such as a belt, a link mechanism, and a chain.

Further, in the above embodiment, an example in which the telescopic conveyor frame includes eight conveyor frames has been shown, but the number of telescopic conveyor frames is not limited to this, and may be nine or more or seven or less.

Further, in the above embodiment, the expansion / contraction conveyor frame mechanism includes both the first conveyor roller and the second conveyor roller, but the present invention is not limited to this. In the present invention, the telescopic conveyor frame mechanism may include only one of the first conveyor roller and the second conveyor roller.

Further, in the above embodiment, an example in which the first conveyor roller and the second conveyor roller are alternately arranged one by one is shown, but the present invention is not limited to this. In the present invention, the first conveyor roller and the second conveyor roller may be arranged in any order, such as being arranged alternately by two.

Further, in the above embodiment, the second conveyor roller is provided with both a meandering correction roller for correcting the meandering of the conveyor belt on the carrier roller and a meandering correction roller for correcting the meandering of the conveyor belt on the return roller. However, the present invention is not limited to this. In the present invention, the second conveyor roller may be provided with only one of a meandering correction roller for correcting the meandering of the conveyor belt on the carrier roller and a meandering correction roller for correcting the meandering of the conveyor belt on the return roller. Good.

Further, in the above embodiment, an example is shown in which the conveyor rollers are automatically deployed as the telescopic conveyor frame is unwound, but the present invention is not limited to this. In the present invention, the conveyor rollers may be manually unfolded while the telescopic conveyor frame is extended. In this case, the conveyor roller is manually moved even during storage.

Further, in the above embodiment, an example in which the telescopic conveyor frame mechanism includes a conveyor roller stand has been shown, but the present invention is not limited to this. In the present invention, the telescopic conveyor frame mechanism may not include a conveyor roller stand.

1 Telescopic conveyor frame 2 Conveyor roller 3 Conveyor roller connecting material 4 Winding and feeding device (storage feeding device)
21 1st Conveyor Roller 22 2nd Conveyor Roller 23a Carrier Roller 23b Return Roller 24a, 24b Serpentine Correction Roller 100, 200 Telescopic Conveyor Frame Mechanism 204 Storage Feeding Device E Stretch Belt Conveyor E1 Head Pulley Device EM Excavation Slipping (Transfer Object)
S Tailpiece trolley system T Tailpiece trolley T1 Moving trolley part T12 Moving mechanism

Claims (8)

A telescopic conveyor frame mechanism for transporting an object to be transported, including at least one of earth and sand and rock.
With multiple conveyor rollers
Storage and feeding device and
It has an elongated shape, and includes a stretchable telescopic conveyor frame in which the plurality of conveyor rollers are movably installed in the longitudinal direction.
The telescopic conveyor frame is composed of a single storage feeding member that is shortened as it is stored in the storage feeding device and is extended as it is fed from the storage feeding device. mechanism. The storage feeding member includes a winding and feeding member that can be wound and unwound.
The telescopic conveyor frame mechanism according to claim 1, wherein the storage and feeding device includes a winding and feeding device for winding and feeding the winding and feeding member. The plurality of conveyor rollers
A carrier roller, a first conveyor roller having a return roller, and
Includes both the carrier roller, the return roller, and a second conveyor roller having a meandering correction roller that corrects the meandering of the conveyor belt by abutting against the lateral end of the conveyor belt. The telescopic conveyor frame mechanism according to claim 1 or 2. The telescopic conveyor frame
When the conveyor rollers are fed by the storage feeding device, the plurality of conveyor rollers are separated from each other and deployed, and at the same time.
The telescopic conveyor frame mechanism according to any one of claims 1 to 3, wherein the plurality of conveyor rollers are arranged in close proximity to each other when they are stored by the storage feeding device. The fourth aspect of claim 4, further comprising a conveyor roller connecting material for arranging the plurality of conveyor rollers so as to be separated from each other when the plurality of conveyor rollers are separated from each other by connecting each of the conveyor rollers adjacent to each other. Telescopic conveyor frame mechanism. A tailpiece bogie system for transporting excavation scraps used in tunnels constructed by blasting excavation.
Telescopic conveyor frame mechanism and
A tailpiece carriage including a single moving carriage section on which the telescopic conveyor frame mechanism is mounted is provided.
The telescopic conveyor frame mechanism
With multiple conveyor rollers
Storage and feeding device and
It has an elongated shape and includes a stretchable telescopic conveyor frame in which the plurality of conveyor rollers are movably installed in the longitudinal direction.
The telescopic conveyor frame is a tailpiece trolley composed of a single storage feeding member that is shortened as it is stored in the storage feeding device and is extended as it is fed from the storage feeding device. system. The telescopic conveyor frame is extended to the face side as the moving carriage portion advances toward the face side during loading and transporting of excavation scraps, and at the time of blasting excavation, the moving carriage portion retracts to the wellhead side. The tailpiece carriage system according to claim 6, which is configured to be shortened to the side. A stretch belt conveyor for transporting excavation scraps used in tunnels constructed by blasting excavation.
Telescopic conveyor frame mechanism and
The head pulley device located on the wellhead side and
A tailpiece carriage including a single moving carriage section on which the telescopic conveyor frame mechanism is mounted is provided.
The telescopic conveyor frame mechanism
With multiple conveyor rollers
Storage and feeding device and
It has an elongated shape and includes a stretchable telescopic conveyor frame in which the plurality of conveyor rollers are movably installed in the longitudinal direction.
The telescopic conveyor frame is a stretch belt conveyor composed of a single storage feeding member that is shortened as it is stored in the storage feeding device and is extended as it is fed from the storage feeding device. ..

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