JP2002004800A - Transport equipment in tunnel tunnel - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable mechanically and automatically controlling the direction of a vehicle body on a curved road with a simple structure, and to enable easy and smooth traveling on a curved road. A transport device in a tunnel mine is provided. [Solution] A tunnel (1) that travels using a groove (4) formed in a traveling floor (3) of a traveling wheel (23) in a tunnel (1) as a guide and conveys materials and excavated soils. Conveying device inside
(20), wherein two or more guide rollers (25) rolling along the side wall surface of the groove (4) are supported on an axle (22) rotatably mounted about a vertical axis. It is mounted so as to be deviated to at least one of before and after in the transport direction via (24). The transfer device (20) has a curved groove portion.
(4) When traveling on, the direction of the wheel (23) is automatically corrected to always match the traveling direction of the guide roller (25), the guide roller (25) and the wheel (23) Roll in the same direction as each other. According to the movement of the guide roller (25), the wheel (23) is automatically steered along the groove (4) in the transport direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport device in a tunnel pit, and more particularly to a transport device in a tunnel pit which enables smooth curve running.

[0002]

2. Description of the Related Art Generally, in a shield method, a segment is assembled along the inner periphery of a tunnel excavated by a shield excavator that has been started from a shaft, and the tunnel mine, which has been lining by assembly of the segment, A transport truck traveling facility for transporting various transport trucks for transporting materials such as the next segment and excavation debris generated at the time of excavation and towing vehicles for pulling these transport vehicles is constructed.

[0003] An example of a back support method at the time of excavating a shield using this transport trolley facility is disclosed in, for example, JP-A-7-26900.
No. 6,009,045. The back support method at the time of shield excavation disclosed in the gazette, with the excavation of the shield excavator, a cross section having a flat surface portion at the bottom forming a concave arc of a segment to be laid behind the excavation portion of the shield excavator Semi-circular precast inverts are sequentially laid to construct a flat traveling route, and the transport cart is automatically driven on the flat surface of the precast invert. A battery, a drive motor, and a control unit are mounted on the transport vehicle. Further, the transport trolley is provided with a bar code reading section for reading a bar code, which is a travel command means provided on the travel path, and performs speed control via the control section while reading the bar code. .

[0004]

By the way, the carrier truck disclosed in the above-mentioned Japanese Patent Application Laid-Open No. Hei 7-26900 is provided with traveling wheels before and after rolling on a flat surface portion of a precast invert, which is a traveling route, and has right and left wheels. And a single guide wheel suspended from the carriage body between the traveling wheels. The single guide wheel is rotatably supported around a vertical axis via a vertical member, and is disposed at a predetermined gap from a side wall surface of the drain groove. The guide wheel rolls using the side wall surface of the drain groove formed on the flat surface portion of the precast invert as a guide surface, and guides the carrier along the center of the tunnel.

[0005] In this conventional transport vehicle, when the tunnel is substantially linear, the traveling direction of the vehicle body is guided by the action of the guide wheels, so that the vehicle travels without deviating from a predetermined travel route. However, since the single guide wheel tries to rotate while receiving a bidirectional force of left rotation or right rotation on the inner and outer side wall surfaces of the drain groove, the guide wheel does not roll smoothly, It easily loses its function as a guide wheel.

[0006] Further, since the transport cart has no steering wheel steering mechanism, it cannot travel smoothly in a curved tunnel. In other words, materials such as segments and heavy objects such as excavation debris are loaded on the transport trolley. In a curved tunnel, the outer traveling wheels are turned while dragging to make a large turn. Wear is severe. In addition, the deflection load generated when the outer traveling wheel tries to make a large turn is entirely received by the support shaft via the guide wheel. At this time,
The guide wheel is strongly pressed against the outer side wall surface of the drainage ditch together with the loading of heavy loads, and receives an excessive force.

As a result, not only the axles of the guide wheels but also the wheels themselves are required to have more strength than necessary. Also, if the guide wheels are to exert a sufficient steering function, the clearance between the diameter of the guide wheels and the side wall of the drainage groove must be reduced. Therefore, not only is the processing accuracy of the guide wheels required,
The rolling of the guide wheel is suppressed by the drain groove, and the guide wheel relatively easily slides in the drain groove with a larger frictional force. At the time of this sliding, since the peripheral surface of the guide wheel slides simultaneously on the left and right side surfaces of the drain groove and travels relatively,
The resistance becomes extremely large, and not only is it difficult for the traveling wheel to follow the drain groove, but also an unnecessary load acts on both the traveling wheel and the guide wheel, causing both axles to move in a short period of time. May be destroyed.

The present invention has been made to solve such a conventional problem, and a specific object thereof is to mechanically and automatically control the direction of a vehicle body during a curve running with a simple structure. It is another object of the present invention to provide a transport device in a tunnel tunnel that can easily and smoothly travel on a curve.

[0009]

The invention according to claim 1 of the present invention is directed to a tunnel which travels by using a groove formed in a traveling floor surface of traveling wheels in a tunnel pit as a guide and transports materials and excavated soils. An underground transport device, comprising a transport device main body, traveling wheels rotatably supported at both ends of an axle portion, and rolling on the floor surface, and two or more rolling wheels rolling along the side wall surface of the groove portion. A guide roller, wherein the axle portion is rotatably mounted around a vertical axis with respect to the transfer device main body, and the guide roller is connected to the vertical axis line via a fixed support member of the axle portion. And at least one of the front and rear portions in the transport direction.

As described above, normally, when the tunnel pit is on a straight line, the direction of the traveling wheels coincides with the traveling direction of the guide rollers, and the main body of the transfer device does not deviate from the predetermined traveling route. To run. On the other hand, when the transfer device main body travels on a curve, the outer traveling wheels change direction while being dragged in an attempt to make a large turn, so that the traveling wheels are severely worn, and even if the outer traveling wheels try to make a large turn. The movement is regulated by the guide roller. For this reason, in general, in the conventional transport device, the guide roller is strongly pushed by the side wall surface outside the groove formed on the traveling floor surface and receives an excessive force in combination with the loading of the heavy object. Rather, a large frictional force is applied to the traveling wheels traveling on the outside, and both wheels are severely worn, which causes a problem in durability.

According to the present invention, there is provided a traveling wheel in which two or more guide rollers rolling along the side wall surface of a groove in a tunnel are mounted rotatably about a vertical axis with respect to a conveying device main body. Is mounted on the axle of the vehicle via a support member so as to be deviated in at least one of the front and rear directions in the transport direction. The running wheel rotates together with the axle portion as the center of the axle portion that supports the wheel, and unnecessary drag is not applied to the guide roller from either the left or right without dragging the running wheel, and the resistance is reduced. Roll smoothly and smoothly along the side wall surface of the groove.

In the present invention, the guide roller may be attached to the support member by, for example, immovably suspending a single support member at the center of the axle portion and leaving a predetermined interval between the support members. Then, a pair of left and right guide rollers are attached, and each guide roller is rolled along the left and right side wall surfaces of the groove. Alternatively, for example, a pair of support members are fixedly suspended on the left and right sides of the axle portion, each guide roller is attached to each support member, and each guide roller is rolled along the left and right side wall surfaces of the groove portion. Is also good.

The two or more guide rollers are mounted so as to be deviated from the vertical axis in at least one of the front and rear directions in the transport direction via the support member, and a gap between the rotation center of each guide roller and the vertical axis is provided. Since the carrier is provided at a required distance, when the transport device body travels on a curved line, the rotating force acting on the vertical axis acting on the guide roller has a large rotational force via the support member and the traveling wheel To the axle of the vehicle. Since the pair of left and right guide rollers independently contact and rotate with the side wall surface of the groove, smooth rotation is ensured even when the transport device main body travels, and the transport device main body is reliably guided along the groove portion.

[0014] Therefore, it is natural that when the transporting device main body travels linearly in the tunnel, when traveling on a curved line, the direction of the traveling wheel always coincides with the traveling direction of the guide roller. The steering is done automatically,
The traveling wheel and the guide roller are operated in the same direction.

Furthermore, the direction of the traveling wheels can be easily and smoothly matched to the traveling direction of the guide rollers mechanically and automatically with a simple structure without the need for a special steering mechanism. At the same time, unnecessary load on both the traveling wheel and the guide roller can be eliminated, and the burden on both axles can be reduced.

According to a second aspect of the present invention, the transport wheels include at least a front wheel and a rear wheel, and the guide roller is attached to each axle portion on the front wheel side and / or the rear wheel side. During traveling of the device, the front wheels and / or the rear wheels of the traveling wheels can be steered directly and automatically. When the transport device body turns on a curved track formed by the grooves in the tunnel pit, the running wheels do not cause side slip, and a small turning radius does not occur between the front and rear running wheels in the left and right directions. And can run smoothly. In addition, when the guide rollers are attached to the axle portions on the front wheel side and the rear wheel side, the same smooth traveling is possible in both forward and reverse travels.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, taking a sewage excavation as an example. 1 to 8 show a typical embodiment of the present invention. FIG. 1 is an overall view of a transport device in a tunnel pit, FIG. 2 is a side view schematically showing an example of a segment truck as the transport device, FIG.
FIG. 4 is a front view of FIG. 2; FIG. 4 is a schematic partial structural view of a main part of the towing vehicle as the transport device as viewed from the front; FIG. 5 is a partial side view of the towing vehicle as viewed in the direction of arrow A in FIG. 6 is a partial plan view seen from the direction of arrow B in FIG. 4, FIG. 7 is a side view schematically showing a modified example of the towing vehicle, and FIG. It is a side view which shows schematically.

In these figures, reference numeral 10 schematically shows a transfer device which is a typical embodiment of the present invention. The transport device 10 transports materials, excavated soil, and the like in a straight or curved tunnel tunnel 1 excavated by a shield excavator (not shown) started from a shaft (not shown). FIG. 1 shows a transfer device 10 according to the present embodiment.
As shown in the figure, a plurality of segment trucks 20 for transporting materials such as the segments 2 are arranged in connection with the front part in the excavation direction, and a plurality of shear discharge trucks 30 for transporting excavation debris and the like also extend in the excavation direction. The segment truck 20 at the forefront and the slip-out carriage 30 at the rearmost portion are arranged in connection with the rear portion.
And a towing vehicle 4 for towing these trucks 20, 30
0 is arranged.

According to this embodiment, the tunnel 1
A required number of segments 2,..., 2 are assembled in a ring shape along the inner circumference, and a cylindrical sewage with a lining is constructed by assembling the segments 2 sequentially. The segment 2 laid on the bottom surface of the tunnel 1 has a shape having a flat surface portion 3, and the central portion of the flat surface portion 3 has a single continuous drain ditch along the axis of the tunnel 1. 4 are formed. The flat surface portion 3 is a traveling floor surface 3 of the transfer device 10. The drain ditch 4
Is effectively used as a groove 4 for guiding a guide roller 25, which will be described later, which forms a part of the characteristic portion of the present invention, and also functions as a traveling guide of the transporting device 10.

As shown in FIG. 2 and FIG. 3, the segment truck 20 includes a vehicle body 21 which is a main body of the transfer device and three axle portions attached to the front, middle and rear portions of the floor of the vehicle body 21. 22. Each axle portion 22 has the same structure. For example, a cylindrical casing 22b having a box portion 22a bulging outward at a central portion, and the casing 22b is inserted through the casing 22b, and both ends of the axle portion are supported by bearings. And a rotatable support shaft (not shown). Traveling wheels 23 that roll on the traveling floor 3 are supported at both ends of each support shaft. The traveling wheels 23 are made of rubber tires, and include front wheels 23a, middle wheels 23b, and rear wheels 23c. In the illustrated example, the front wheel 23a and the rear wheel 2
Each of the axle portions 3c is attached to the vehicle body 21 so as to be rotatable around a vertical axis at a central portion in the vehicle width direction.

The segment stacking surface of the vehicle body 21 is formed by a roller conveyor. The roller conveyor has a pair of left and right roller mounting pieces 21a on which a plurality of rotating rollers 21b,. It is freely supported. On both side edges of the vehicle body 21, two pairs of left and right segment supporting pads 21c for supporting the segments 2 are provided in front and rear. Therefore, one segment truck 20 can simultaneously transport two segments. In the present embodiment, the segment is oriented so that its circumferential direction is in the vehicle width direction of the vehicle body 21, the outer peripheral surface is oriented to the transfer surface of the roller conveyor, and the pair of left and right segment supporting pads 21 c The outer peripheral surface is supported from below. Further, a pair of couplers 21d, 21d are provided at front and rear ends of the vehicle body 21, respectively.

As shown in FIG. 3, a pair of left and right anti-sway load receiving portions 26, 26 are vertically provided at the installation site of the traveling wheels 23 of the vehicle body 21, and a pair of left and right same load receiving portions 26, 26 are provided.
A frame member 27 for attaching an axle portion is provided at the lower end of the frame 26. The load receiving portion 26 is elastically abutted on load receiving bases 22c projecting upward from both side ends of a casing 22b, which is a constituent member of the axle portion 22, and a vertical direction of the traveling wheels 23 is provided. Prevents runout.
The box portion 22a of each axle portion 22 of the traveling wheel 23
Is fixed to a table 28 having a center pin 28a. The center pin 28a is rotatably fixed to a center portion of the frame member 27 via a bearing (not shown), and receives a load in front, rear, left and right. Accordingly, each axle portion 22 is rotatable around the vertical axis at the center of the frame member 27 via the center pin 28a.

In the first embodiment, the front wheels 23a
And a pair of left and right guide rollers 25, 2 via the support member 24 on the lower surface of each axle portion 22 of the rear wheel 23c.
5 is attached. The guide roller 25 rolls along the side wall surface of the groove 4 of the tunnel 1. The support member 24 to which the guide roller 25 is attached is located on the vertical axis of the center pin 28a,
A vertical shaft portion 24a as a first support member vertically suspended from the box portion 22a, and a plate-like bracket 24b as a second support member extending substantially horizontally at a lower end of the vertical shaft portion 24a. ing. The bracket 24b extends perpendicularly to the axle portion 22 and either or both of the front and rear sides. In the illustrated example, a bracket 24b attached to the axle portion 22 of the front wheel 23a extends forward. On the other hand, the bracket 24b on the rear wheel 23c side extends rearward.

A pair of right and left loose fitting grooves 24c, 24c, into which a part of the guide roller 25 can be loosely fitted horizontally, are formed at the tip of the bracket 24b, and each guide roller 25 is formed in the loose fitting groove 24c. It is supported so that it can freely rotate around the vertical axis inside. In the first embodiment,
The guide roller 25 mounted on the axle portion 22 of the front wheel 23a is mounted so as to be displaced forward from the vertical axis of the center pin 28a. On the contrary, the guide roller 25 of the rear wheel 23c is
It is mounted so as to be deviated backward from the vertical axis of a.

When the tunnel 1 is located on a straight line, the direction of the traveling wheels coincides with the traveling direction of the guide rollers, as described above, even in the above-described conventional transport device having guide rollers. Accordingly, the segment truck travels without departing from a predetermined traveling route. Thus, when the segment truck travels on a curve, the outer traveling wheels usually change direction while being dragged to make a large turn, so that the wear of the traveling wheels increases drastically.

In addition, since the guide rollers restrict the turning of the outer traveling wheels from turning greatly, the guide rollers are strongly pushed by the outer side wall surfaces of the grooves due to the loading of heavy objects such as segments, resulting in excessive force. Receive. Therefore, the guide roller and the groove tend to slide relatively with a considerable frictional force. As a result, there is a problem that a large frictional force is applied and the axle portion and the support member are damaged.

On the other hand, in this embodiment, the axle 22 is rotatably mounted on the vehicle body 21 about a vertical axis, and two or more guide rollers 25 are fixed to the axle 22. It is mounted so as to be deviated from the vertical axis to at least one of the front and rear sides in the transport direction via the provided support member 24.

That is, the traveling wheel 23 and the pair of left and right guide rollers 25 are integrally formed so as to be freely rotatable about a vertical axis with respect to the vehicle body 21. The pair of left and right guide rollers 25 independently contact and rotate with the left and right side wall surfaces of the groove 4, respectively.
Smooth rotation is assured even when the vehicle 1 is traveling, and the vehicle body 21 is reliably guided along the groove 4. Also, for example, when turning the segment truck 20, the traveling wheels 23
Direction is also mechanically and automatically corrected so as to always coincide with the traveling direction of the guide roller 25, and when the guide roller 25 rolls along the side wall of the groove 4, the traveling wheel 23 also moves to the guide roller 25. The vehicle follows the direction of travel and is automatically steered.

In the present invention, in particular, two or more of the guide rollers 25 are supported by a support member 24 fixed to the axle portion 22.
Are mounted so as to be deviated from the vertical axis in at least one of the front and rear directions in the transport direction via the vertical axis, and the rotation center of each guide roller 25 and the vertical axis O are provided at a required distance. Therefore, when the guide roller 25 rolls along the groove 4 curved in a curved shape, the rotational force acting on the guide roller 25 around the vertical axis is generated by the traveling wheel 23
To the axle portion 22 of the vehicle.

For this reason, the traveling wheel 23 is smoothly turned along the groove 4 in accordance with the movement of the guide roller 25, and the traveling wheel 23 is largely turned or the traveling wheel 23 is turned right and left. Without traveling in the state, the guide roller 25 and the traveling wheel 23 travel smoothly without difficulty.

Therefore, by providing the steering mechanism as described above, it is possible to easily and smoothly match the direction of the traveling wheel 23 with the traveling direction of the guide roller 25 mechanically and automatically with a simple structure. it can. In addition, the load on the traveling wheel 23, the axle 22, the support member 24, and the like can be significantly reduced without applying unnecessary unnecessary weight to both the traveling wheel 23 and the guide roller 25. The performance of the steering mechanism such as the axle section 22 can be maintained for a long period of time.

Referring to FIGS. 1 and 4 to 6, there is shown a towing vehicle 40 as a second embodiment of the transport device 10 according to the present invention. In the first embodiment, the structure in which the traveling wheel 23 is provided with the steering mechanism of the present invention is replaced by the second embodiment.
In the embodiment, of the front and rear traveling wheels 43a and 43b to which the steering mechanism is attached, the rear wheel 43b is a driving wheel. On the other hand, the front wheels 43a rotate freely, and the steering mechanism is substantially the same as in the first embodiment. In these drawings, members that are substantially the same as those in the first embodiment are given the same member names. Therefore, a detailed description of these members will be omitted.

As shown in these figures, the towing vehicle 40 includes a vehicle body 41 having a driver's cab 41a and a vehicle body 41 having the same.
Axles 4 attached to the front and rear of the floor
2, 42. The front and rear ends of the vehicle main body 41 have couplers 41d, 41d. The cab 41a
Is provided with a speed control lever 41b. A battery 41c is mounted near the rear side of the cab 41a.

The axle portion 42 has substantially the same structure as the axle portion 22 of the segment truck 20 of the first embodiment. Each axle portion 42 is attached to the vehicle body 41 so as to be rotatable around a vertical axis at a central portion in the vehicle width direction. Wheels 43 made of rubber tires are rotatably supported at both ends of each axle portion 42 via bearings (not shown).

In the second embodiment, a traveling motor 41e directly attached to a central box portion 42a of the rear axle portion 42 is connected to the battery 41c. A gear (not shown) for transmitting the driving force of the electric motor 41e to the driving wheels 43b is incorporated. Further, in the present embodiment, a part of the surplus electric energy of the traveling motor 41e is stored in the battery 41c by a control device (not shown), so that the consumption of the battery 41c is reduced.

As shown in FIGS. 4 to 6, a pair of left and right anti-sway load receiving portions 46, 46 are vertically provided on the axle portion 42 of the drive wheel 43b as in the first embodiment. A frame member 47 for attaching an axle portion is provided at the lower end portions of the pair of left and right load receiving portions 46, 46. The load receiving portion 46
Are elastically in contact with load receiving bases 44c projecting upward from both side ends of the casing 42b. The box section 42
A table 48 having a center pin 48a is fixed to a. The axle portion 42 is provided with the center pin 48a.
The frame member 47 is fixed so as to be rotatable around a vertical axis at the center of the frame member 47.

A guide roller 45 is rotatably supported on a lower surface of the central box portion 42a of the axle portion 42 via a support member 44 so as to be rotatable around a vertical axis. The guide roller 45 is mounted so as to be deviated rearward from the center pin 48a. A pair of left and right loose fitting grooves 44c, 44c, into which a part of the guide roller 45 can be loosely fitted horizontally, are formed at the distal end of the bracket 44b. Each guide roller 45 has a vertical axis inside the loose fitting groove 44c. It is supported so that it can rotate freely around it.

According to the above configuration, the traveling motor 41
Since e is directly attached to the box portion 42a of the axle portion 42, there is no need to install a motor for traveling in the driver's cab 41a, and the room can be widely and effectively utilized. Also, a gear is built in the box portion 42a,
By directly attaching the steering motor to the box portion 42a, the steering mechanism can be unitized, and the towing vehicle 40 can be downsized. In addition, the vehicle main body 41 can be smoothly and self-propelled along the groove 4 in the transport direction based on the power of the traveling motor 41e with a simple driving structure, similarly to the first embodiment.

FIG. 7 schematically shows a modification of the towing vehicle 40. In the second embodiment, the driving motor 41e directly attached to the central box portion 42a of the axle portion 42 has a structure for transmitting the driving force to the driving wheels 43b. 41e in cab 4
1a and the box 4 of the axle 42
A transmission gear mechanism is arranged between 2a and the traveling motor 41e. Note that, in the figure, the same reference numerals and member names are assigned to members that are substantially the same as those in the second embodiment. Therefore, a detailed description of these members will be omitted.

As shown in the figure, a driving motor 41e and a battery 41c are mounted near the rear side of the cab 41a. The vehicle body 41 is provided with a gear mechanism 41h for transmitting the driving force of the traveling electric motor 41e to the driving wheels 43b via a horizontal shaft 41f and a vertical shaft 41g. Accordingly, power can be transmitted with a simple structure as in the second embodiment, and the traveling wheels 23 can smoothly travel along the groove 4 in the transport direction based on the power of the traveling motor 41e. Can be done.

FIG. 8 schematically shows an example of a slip-out carriage 30 as a transport device in the third embodiment. In the same figure, the reference numerals given to the members corresponding to the respective members shown in the first embodiment are the same except that the number “2” at the beginning is unified to “3”, and each is substantially the same. Have the same function. Therefore, a detailed description of these members will be omitted.

As shown in FIG.
The vehicle body 31 includes a bucket-type vehicle body 31 on which excavation waste is loaded, and two front and rear axle portions 32, 32 which are attached to the vehicle body 31 so as to be rotatable around a vertical axis. A pair of traveling wheels 33a, 33b are rotatably supported at both ends of each axle portion 32 via bearings (not shown). Each running wheel consists of a rubber tire. A pair of couplers 31d, 31d are provided at the front and rear ends of the vehicle body 31, respectively. A pair of left and right guide rollers 35 is provided on the lower surface of each axle portion 32 via the support member 34.
Is attached. The guide roller 35 is deviated at least one of before and after in the transport direction. As described above, the steering mechanism according to the present embodiment includes various transport devices 10.
Can be applied effectively.

FIG. 9 schematically shows a modification of the segment truck 20. In the first embodiment, the steering mechanism has a single support member 24 for attaching the guide roller 25 to the central box portion 22a of the axle portion 22. In this modified example, the steering mechanism is arranged at a predetermined interval. In addition, a pair of support members 24, 24 are disposed on the left and right sides of the axle portion 22. In the figure, the members substantially the same as those in the first embodiment are denoted by the same reference numerals and names. Therefore, a detailed description of these members will be omitted.

Referring to FIG.
Are mounted on the lower surface of the axle portion 22 on the same vertical line as the steady rest load receiving portion 26, and a single guide roller 25 is attached via the support member 24, respectively. The guide roller 25 is mounted so as to be deviated forward or rearward from the axle 22. According to the illustrated example, the guide rollers 25 are arranged to face each other, and roll along the side wall surface formed at the center of the groove 4 having the uneven shape.

Although the steering mechanism has been described by taking the segment truck 20 as an example, the present invention is not limited to this, and can be applied to the towing truck 40 and the slip-out carriage 30. Further, the guide rollers 25 are disposed to face each other in the vehicle interior direction with the support members 24 interposed therebetween. However, the guide rollers 25 may be disposed so as to face each other in the vehicle exterior direction.

FIG. 10 schematically shows another modification of the segment truck 20. In the figure, the members substantially the same as those in the first embodiment are denoted by the same reference numerals and members. Therefore, a detailed description of these members will be omitted. In the figure, a segment supporting member 21c-1 is mounted on a pair of left and right roller mounting pieces 21a arranged on a segment loading surface of the vehicle body 21 so as to be able to move up and down in a direction orthogonal to the transfer direction of the roller conveyor. I have. The segment supporting member 21c-1 is attached to the vehicle body 21.
Are arranged on the inside of the front and back of the segment supporting pad 21c provided on each side edge of the segment, and support the peripheral end face of the segment from the front and rear direction. The segment can be reliably supported by the segment supporting member 21c-1 and the segment supporting pad 21c, and the segment can be transported safely.

As is clear from the above description, according to the transport device 10 in the tunnel 1 according to the present invention, two or more guides rolling along the side wall surface of the groove 4 in the tunnel 1 are provided. The rollers 25, 35, 45 are supported by the support members 24, 3
The running wheels 23, which are rotatably mounted on the vehicle bodies 21, 31, 41 through the vertical axes 4 and 44 around the vertical axis,
33 and 43 are attached to the axle portions 22, 32 and 42 so as to be deviated at least in one of the front and rear directions in the transport direction.
As a result, as shown in FIG. 1, the plurality of transport devices 10 forming a train structure are connected to each other, and can smoothly and smoothly travel along the groove 4.

When the vehicle is traveling along a curved line, the direction of each of the two or more guide rollers 25, 35, 45 can be changed without difficulty by the traveling wheels 23a to 23c, 33a, 33.
b, 43a, 43b, and as a result, the direction of each of the plurality of transporting devices 10 is also changed by each of the guide rollers 25, 3
5 and 45 are automatically corrected so as to match the running directions, and the plurality of running wheels 23, 33 and 43 and the guide rollers 25, 35 and 45 can be operated one after another in the same direction. .

Further, when the respective guide rollers 25, 35, 45 are mounted on the axle portions 22, 33, 44 of both the front wheels and the rear wheels, the front wheels 23a are driven while the vehicle bodies 21, 31, 41 are running. , 33a, 43a and rear wheels 23b, 33
b and 43b can be steered directly and automatically. When each of the vehicle bodies 21, 31, and 41 turns in the groove 4, the respective traveling wheels 23, 33, and 43 may cause a side slip, or a difference between the front and rear traveling wheels 23, 33, and 43 in the lateral direction between the inner and outer wheels. Without it, it can be run smoothly with a small turning radius. The present invention is not limited to the above embodiments, but naturally includes a technical range that can be easily changed by those skilled in the art from those embodiments.

[Brief description of the drawings]

FIG. 1 is an overall view schematically showing a transport device in a tunnel pit which is a typical embodiment of the present invention.

FIG. 2 is a side view schematically showing an example of a segment truck that is the transport device.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a schematic partial structural view of a main part of a towing vehicle as the transfer device, as viewed from the front.

FIG. 5 is a partial side view seen from the direction of arrow A in FIG. 4;

FIG. 6 is a partial plan view seen from the direction of arrow B in FIG. 4;

FIG. 7 is a side view schematically showing a modification of the towing vehicle.

FIG. 8 is a side view schematically showing an example of a slip-out carriage as the transport device.

FIG. 9 schematically shows a modification of the segment truck.

FIG. 10 schematically shows another modification of the segment truck.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel 2 Segment 3 Traveling floor 4 Groove 10 Transport device 20 Segment truck 21, 31, 41 Vehicle main body 21a Roller attachment piece 21b Rotary roller 21c Segment support pad 21c-1 Segment support member 21d, 31d, 41d Connector 22, 32, 42 Axle part 22a, 42a Box part 22b, 42b Casing 22c, 42c Load receiving stand 23, 33, 43 Running wheel 23a, 33a, 43a Front wheel 23b Middle wheel 23c, 33b Rear wheel 24, 34, 44 Supporting member 24a, 44a Vertical shaft portions 24b, 34b, 44b Brackets 24c, 44c Free-fitting grooves 25 Guide rollers 26, 46 Load receiving portions 27, 47 Frame members 28, 48 Tables 28a, 48a Center pins 30 Slip-off carriage 40 Towing vehicle 41a Operation Room 41b Speed control lever 41c Battery 41e Electric motor 41f Horizontal axis 41g Vertical axis 41h Gear mechanism 43b Drive wheel

Continued on the front page (71) Applicant 000000549 Obayashi Corporation Co., Ltd. 4-33, Kitahamahigashi, Chuo-ku, Osaka-shi, Osaka (71) Applicant 000172813 Sato Kogyo Co., Ltd. 1-11, Sakuragicho, Toyama-shi, Toyama, Japan (71) Applicant 000230010 Geostar Co., Ltd. 2-3 2-3 Shiba, Minato-ku, Tokyo (72) Inventor Yoshifumi Takahashi 2-6-1 Otemachi, Chiyoda-ku, Tokyo Inside Tokyo Sewerage Service Co., Ltd. (72) Inventor Masahiko Yamamoto Tokyo 2-1, Tsukudo-cho, Shinjuku-ku, Japan Kumagai Gumi Co., Ltd. (72) Inventor Kunio Takeda 2-2-1 Konan, Minato-ku, Tokyo 15-2 Obayashi Gumi Co., Ltd. 12-20 Sato Kogyo Co., Ltd. (72) Inventor Tokuyuki Sasaki 2-3-3 Shiba, Minato-ku, Tokyo Geostar Co., Ltd. (72) Inventor Hideki Tanaka 2-3-3 Shiba, Minato-ku, Tokyo (72) Inventor Kiyoshi Katsunuma 2-3-2 Akasaka, Minato-ku, Tokyo Komatsu Ltd. (72) Inventor Yukio Kikuchi 2-3-6 Akasaka, Minato-ku, Tokyo Komatsu Ltd. (72) Inventor Hiroshi Kubo 3-2-1 Nakase, Kawasaki-ku, Kawasaki-ku, Kawasaki, Japan Engineering Co., Ltd. F-term (reference) 2D055 GA06

Claims (2)

[Claims] An apparatus for transporting materials and excavated soil, which travels using a groove formed in a traveling floor surface of a traveling wheel in a tunnel pit as a guide, and comprises: a transport device main body; A traveling wheel rotatably supported at both ends and rolling on the floor surface, and two or more guide rollers rolling along a side wall surface of the groove portion, wherein the axle portion is the main body of the transfer device. The guide roller is attached so as to be rotatable about a vertical axis with respect to the vertical axis. A transport device in a tunnel mine. 2. The transport device in a tunnel mine according to claim 1, wherein the traveling wheel includes at least a front wheel and a rear wheel, and the guide roller is attached to each axle portion on a front wheel side and / or a rear wheel side.