JPH048600B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a track structure laid in a tunnel during tunnel construction, and in particular to a vehicle for guiding a vehicle for carrying out shear and carrying in materials inside the tunnel. The present invention relates to a track structure in which the track is composed of a single track section, a turnout, and a double track section.

(Prior art) In tunnel construction, when a vehicle such as a trolley is used as a means to carry out the shear generated by tunnel excavation from the tunnel and to carry in tunnel materials, the conveyance efficiency by the vehicle is improved. In order to achieve this, it is desirable that the vehicle track for guiding the vehicle into the tunnel along its length be of a double track type. However, since various auxiliary equipment necessary for tunnel construction are arranged behind the excavator, it is generally not possible to secure space for the vehicles to run in parallel.

Therefore, conventionally, the track behind the excavator is a single-track track, and a turnout is fixedly provided at the bottom of the tunnel between the single-track track and the double-track track extending to the tunnel opening.

By the way, in a track structure in which a single-track track is connected to a double-track track via a turnout, when a train enters a single-track section from a double-track section, the train heads toward the tunnel opening until it returns to the double-track section again. , other trains must wait in the double-track section. For this reason, as the excavation progresses, the single track section is extended, and as the distance of this single track section increases, the above-mentioned waiting time increases, making it impossible to smoothly carry out shedding and loading materials. The efficiency of transporting cargo by the vehicle traveling on the track is reduced, and in particular, the reduction in shear removal efficiency leads to interruption of face work, which increases the tunnel construction period.

Therefore, conventionally, in order to minimize the length of the single track section, that is, the single track track,
As tunnel excavation progresses, the turnout fixed at the bottom of the tunnel is moved forward, but each time the turnout is moved, it must be disassembled and reinstalled at the bottom of the tunnel. It takes a great deal of time and effort to relocate this turnout, and the removal of shears and the import of materials are interrupted for a relatively long time each time, so the efficiency of tunnel construction is reduced. Construction was difficult.

(Objective) An object of the present invention is to provide a track structure for tunnel construction, which enables efficient transport of cargo and efficient construction of tunnel construction.

(Structure) The present invention provides a double-track bogie track that is provided at the bottom of a tunnel and guides the bogie forward as the tunnel is excavated so that the bogie is positioned near and behind the tunnel excavator; A vehicle track for guiding vehicles in the longitudinal direction of the tunnel for carrying in and out of materials, a single-track track section provided on the bogie, and a turnout that is provided on the bogie and continues behind the single-track track section. and a vehicle track consisting of a double-track track section provided at the bottom of the tunnel and continuing behind the turnout, the double-track track section being a part of the bogie track.

(Operation and Effect) According to the present invention, a single-track track portion for a vehicle is provided on a bogie that is guided forward on a bogie track as a tunnel is excavated, and the single-track track portion is provided at the bottom of the tunnel. Since a double-track track section, that is, a turnout for connecting to a part of the bogie track, is provided, the single-track track section and the turnout can be disassembled simply to advance the bogie as the excavation progresses. The branch can be moved forward without any trouble, and the branch can be relocated extremely quickly and easily compared to the conventional method. Therefore, it is not necessary to stop the vehicle for a long time to relocate the turnout as in the past, and there is no reduction in the transportation efficiency of the vehicle, making tunnel construction more efficient. It becomes possible.

In addition, the double-track track section is a part of the bogie track, and therefore, a part of the bogie track is used as a double-track track section. Since the track can be laid as a track, the track laying work can be simplified, and therefore, the tunnel work can be carried out efficiently.

(Embodiments) The features of the present invention will become clearer from the following description of the illustrated embodiments.

The track structure according to the present invention is applied, for example, to tunnel construction as shown in FIGS. is used. As is well known in the art, the tunnel 10 is divided into segments 1 and 1 as the excavation progresses.
4, and a segment erector 16, well known in the art, is provided at the rear of the excavator 12 for positioning the segments at predetermined locations.

Within the tunnel 10 are a number of sleepers 18 spaced apart from one another in the longitudinal direction of the tunnel and each extending in a direction transverse to the tunnel.
and four rails 20 (20
A double-track track 22 including rails 20a and 20b) is laid, and the gauges _G1 of the pair of rails 20a and 20b are equal to each other. Preferably, inner rails 20a and 20b
The spacing G ₂ between the tracks 22 and 22 is smaller than the gauge G ₁ .
As shown in the figure, it extends to the vicinity of the rear of the excavator 12.

On the track 22 near the excavator 12, there are 4
trolleys 24 (24a, 24b, 24c, 24
d) are arranged, each truck 24 having a rectangular floor plate 26. The carts 24 except for the cart 24d at the rear end, that is, the one located farthest from the excavator 12
a, 24b, 24c, as shown in FIG.
Left and right wheels 32 are provided that engage with rails 20a and 20b located on both outer sides. As shown in FIG. 4, the truck 24d located at the rear end has wheels 32 that engage with the rails 20a and 20b located on both outside sides, as well as wheels 32 that are preferably located between the left and right wheels 32 and located inside. Auxiliary wheels 34 are provided that engage with the rails 20a, 20b.

Each truck 24 has a pivot 36 as shown in FIG.
The floorboards 26 are connected in series via a hinge coupler 38 having opposite edges chamfered to suit curved driving.

Referring again to FIG. 2, on each floor plate 26 of each of the bogies 24a, 24b, and 24c, except for the last bogie 24d, there is a pair of rails 40 extending from the center of the floor plate. It is laid with a gauge equal to ₁ . In addition, each trolley 24a, 2
On the floorboards 26 of 4b and 24c, there are various attached equipment 4 necessary for tunnel construction, such as a chemical injection device and a backfill injection device for ground improvement of the face.
A portal frame 44 is provided for supporting 2. Each piece of equipment 42 has a frame 44 so that a train consisting of vehicles 48a to 48g including a driving vehicle 48a as shown in FIG.
is supported by the frame on both sides (see Fig. 4). In addition, the cart 24a located at the frontmost position has
As an accessory equipment, a hoist device 50 for transferring the segments 14 brought in by a vehicle to the segment erector 16 is provided.
a is connected to the excavator 12 via a traction rod 52. Therefore, when the conventionally well-known propulsion jack 54 that causes the existing segment 14 to bear a reaction force extends in accordance with the progress of excavation, the excavator 12
As the truck moves forward, the truck group 24 is moved forward. An excavator 1 is mounted on the top of the frame 44 as an accessory equipment.
A conveyor system 56, well known in the art, is supported for transferring the shear discharged from the vehicle 2 to the empty vehicle 48.

A turnout 58 is provided on the floor plate 26 of the rearmost truck 24d to connect the single-track track section for the vehicle 48 defined by the rails 40 and the double-track track 22. Trolley 24d
As shown in FIG. 1, an inclined surface 60 that descends toward the track 22 is provided at the rear of the floor plate 26 of the vehicle. The turnout 58 is provided on the trolley 24d,
It differs from the conventional turnout except that the branch rail 62 extends rearward along the slope 60 and extends beyond the trailing edge of the branch rail floor plate 26 onto the corresponding rails 20a, 20b. The same is true.

The branch rail 62 allows the vehicle 48 to pass from the double track track 22 to the turnout 58 and from the switch to the double track track 22.
Constructs a slope for connecting to. Vehicle 4
In order to facilitate the above-mentioned transfer in No. 8, the lower surface of the rear end of each branch rail 62 is formed into a tapered surface 64 that slidably abuts on the upper surface of the corresponding rail 20a, 20b.

The turnout 58 is provided with a conventionally well-known switching device 66, and by operating the switching device, the single track section defined by the rail 40 is selectively switched to either one of the double track tracks 22. Can be connected. Therefore, a vehicle 48 loaded with materials can be guided from, for example, a pair of rails 20a of the double-track track 22 to the single-track track section 40 via the turnout 58, and at a predetermined point on the single-track track section 40, a vehicle 48 loaded with materials can be guided. In order to drive the vehicle 18 loaded with shear toward the opening of the tunnel 10, it can be guided via the turnout 58 to the other pair of rails 20b laid parallel to the rails 20a. As is clear from this, the portion of the track 22 located behind the last truck 24d constitutes a double-track track portion for the vehicle 48.

In the track structure according to the present invention, when the excavator 12 is advanced in accordance with the progress of excavation, the bogie 2
4 is advanced on the rails 20a, 20b located on both outer sides of the rails 20a, 20b of the track 22, and the single track section and turnout for the vehicle 48 are provided on the bogie 24. The track section and turnout are moved forward.
Further, as the bogie 24 moves forward, the inclined portion of the turnout 58, that is, the rear end portion of the branch rail 62, slides forward on the existing rails 20a, 20b. has effectively been extended. After the truck 24 is moved forward, until the truck is moved forward again, the track for the truck, that is, the both outer rails 20a, 20
b is preferably extended with inner rails 20a, 20b.

Therefore, by simply moving the trolley 24,
Single-track track sections and turnouts can be moved forward without disassembly and re-laying, and relocation of turnouts can be done extremely quickly and easily compared to conventional methods, and face work is required for relocation of turnouts. There is no need to interrupt the operation of the vehicle 48 for a long period of time that would cause an interruption in the operation of the tunnel, and the transportation efficiency of the vehicle can be improved, and as a result, tunnel construction can be carried out efficiently. .

As mentioned above, the double-track track section is the bogie track 2.
2, and therefore, a part of the bogie track is used as a double-track track section, and since the bogie track can be laid as a double-track track section by extending the bogie track in advance to the front of the bogie, the track Not only can the tunneling work be simplified, but also the vehicle 48 can be operated continuously without interruption, thereby making it possible to perform tunnel construction efficiently.

Furthermore, in the past, a so-called equal three-track double-track track was used in which the gauge G ₂ was equal to the gauge G ₁ in order to utilize a pair of rails located inside the double-track track as a single-track track section for the vehicle. However, in the track structure according to the present invention, since the single-track track section is constituted by a rail 40 that is separate from the double-track track section, the gauge G ₂ can be made smaller than the gauge G ₁ , and the width dimension of the track 22 can be made smaller. It is possible to reduce
The space within the tunnel can be used effectively, and the length of the sleeper can be reduced, and as a result, the strength of the sleeper can be relatively increased.

[Brief explanation of drawings]

1 and 2 are respectively a front view and a plan view schematically showing the track structure according to the present invention, and FIGS. 3 and 4 are respectively taken along the lines shown in FIG. 1. FIG. 5 is an enlarged plan view showing the connection structure of the bogies shown in FIGS. 1 and 2. 10: Tunnel, 12: Excavator, 20a, 20
b: Rail of bogie track, 22: Bogie track, 2
4: Bogie, 40, 62: Vehicle track rail, 4
2, 50, 56: Accessory equipment, 44: Gate-shaped frame, 48: Vehicle, 58: Turnout.

Claims (1)

[Scope of Claims] 1. A double-track bogie track 22 that is provided at the bottom of the tunnel and guides the bogie forward as the tunnel is excavated so that the bogie 24 is located near and behind the tunnel excavator; A vehicle track for guiding a vehicle 48 for carrying out shelving and materials in the longitudinal direction of the tunnel, which is a single track track section 40 provided on the bogie, and a single track track section 40 provided on the bogie and behind the single track track section. A track for tunnel construction including a subsequent turnout 58 and a vehicle track consisting of a double track track section provided at the bottom of the tunnel and continuing behind the switch, the double track track section being a part of the bogie track 22. structure. 2. The vehicle according to claim 1, wherein the bogie is provided with a gate-shaped frame for supporting equipment attached to tunnel construction so as to allow passage of the vehicle on the single-track track section. Track structure for tunnel construction.