JP3117947B2 - Hose cart for shield method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose bogie used in a muddy pressurized shield construction method, and is used in the middle of various pipes such as muddy water pipes, fresh water pipes, vacuum pipes, and air hoses laid from a wellhead to a face. It is used to expand and contract the interposed flexible hose as the excavation progresses.

[0002]

2. Description of the Related Art As a method for excavating a tunnel, a muddy pressurized shield method is known. In this method, mud pipes for mud feed and drainage are laid in parallel from the wellhead to the face, and flexible hoses for mud feed and mud mounted on a hose truck are interposed between them. Connected respectively,
Muddy water is sent to the shield machine on the face side through a muddy water pipe and a hose, and the muddy water is returned to the wellhead through a muddy water hose and a muddy water pipe together with earth and sand generated by excavation. Each of the above-mentioned hoses for mud feeding and mud discharging is initially mounted on a hose bogie in a curved state, and is drawn out and extended linearly with the progress of excavation. The existing mud pipes for mud feed and drainage connected to the wellhead side are cut off in the middle, the above-mentioned hose is wound into the initial curved state, and newly sent to the cutoff part of the wellhead side muddy pipe. Mud pipes for mud and drainage will be added respectively. In addition, a switching valve is interposed at the cut-off portion of the well-side muddy pipe in order to facilitate the work of adding the muddy pipe.

FIG. 1 shows an example of the hose truck.
In FIG. 1, reference numeral 1 denotes a truck rail laid in a tunnel, 2 denotes a hose truck, and 3 denotes a frame erected on the truck 2.
And the rack 5 is fixed in parallel, the flanged drum 8 rides on the drum rail 4 via the wheel 6a, and the pinion 6b coaxial with the wheel 6a meshes with the rack 5 so that the drum 8 can move forward and backward uniformly. It has become. One end of a flexible hose 9 wound around the drum 8 is connected via a U-shaped pipe 10 to a mud pipe 11 on the face side, and the other end is connected to a mud pipe 12 on the wellhead side. A switching valve is provided at 12. In addition, the above-mentioned muddy water pipe 11,
Reference numeral 12 denotes a unit connected to a 6 m long unit muddy pipe. In addition, the front end of the hose truck 2 is connected to the shield machine via the connector 2a and various trucks. Also, the illustrated drum 8 and flexible hose 9 are of a muddy system,
A mud feed drum and a flexible hose are similarly arranged on the back side of the paper, and the mud feed flexible hose is connected between the face side mud pipe and the wellhead mud pipe of the mud feed system. You.

[0004] As the excavation proceeds, muddy water is sent to the face by a mud feeding hose and a muddy pipe, and the excavated earth and sand together with the muddy water are shown in FIG. Since the shield machine advances at the same time through the hose 9 and the wellhead side muddy pipe 12 and the shield machine advances, and the hose bogie 2 advances accordingly, the drum 8 rotates because the existing muddy pipe 12 is stationary. While retracting on the drum rail 4 at half the speed of the hose truck 2, the flexible hose 9 is pulled out behind the hose truck 2 and extended linearly. Then, as the excavation progresses, the travel distance of the hose bogie 2 becomes the length of one unit muddy pipe (for example, 6 m), and when the drum 8 reaches the rear end of the hose bogie 2 as shown by a chain line, excavation is performed. In addition, the feeding and discharging of mud are stopped, the connection in the middle of the well-side muddy water pipe 12 is disconnected, and the drum 8 rotates while being pulled back to the solid line position on the hose carriage 2 by a winch or the like, and the flexible hose 9 is illustrated. Rewind like
The length of the flexible hose 9 extended to the rear of the hose truck 2 is shortened.
m gap is formed, and a new wellhead side mud pipe 1 is formed in this gap.
2 will be added, and then excavation, mud feeding and mud discharging will be resumed.

[0005] According to this conventional apparatus, the drum 8 having the flexible hose 9 made a half turn is advanced and retracted on the hose carriage 2, so that the movement distance of the drum 8 on the hose carriage 2 is reduced to half of the movement distance of the hose carriage 2. And the movement of the flexible hose 9 and the flow of muddy water in the flexible hose 9 can be smoothed. However, since the wheel 8a of the drum shaft is rolled on the drum rail 4 laid on the hose truck 2 to move the drum 8 forward and backward, the drum shaft is easily inclined forward and backward, and the pinion 6b is used to prevent this.
In addition, there is a problem that the supporting mechanism becomes complicated, for example, the rack 5 is required, and the drum 8 is used.

[0006]

The present invention is not limited to muddy water, but uses a flexible hose provided in the middle of various pipes such as fresh water pipes, vacuum pipes, air hoses, etc.
The flexible hose can be curved and guided so that the movement of the flexible hose and the flow of muddy water can be made smooth as before, and furthermore, the drum rotating on the hose carriage is eliminated to further reduce the size of the whole apparatus, This eliminates the need for a complicated control mechanism such as a rack and pinion mechanism.

[0007]

In a hose truck for a shield method according to the present invention, a pair of left and right guide rails are provided in a front-rear direction on a first truck that can run on rails in a tunnel, and the guide rails are mounted on the guide rails. Place the second truck,
Two or more roller support plates composed of a plane including a horizontal line and a vertical line in the front-rear direction are arranged side by side at an arbitrary interval on a cart, and a number of first conveyor rollers are directed forward or between two adjacent roller support plates. A plurality of second conveyor rollers are radially arranged outside the semicircle on the opposing surfaces of the two roller support plates, and are arranged along a rearwardly convex semicircle. A flexible hose is wound around a roller and bent into a U-shape. One end of this flexible hose is connected to the rear end of the face-facing pipe extending toward the shield machine being excavated by the muddy water pressurized shield method, and the other end is connected to the other end. It is characterized in that it is connected to the front end of a wellbore-side pipe extending to the wellbore side.

[0008] In the above apparatus, the front end of the first bogie is connected to the shield machine via the connecting tool and various bogies in the same manner as in the prior art, and the second bogie is located at the face end (front end) of the guide rail. The semicircular projection formed by the arrangement of the first conveyor rollers is directed forward, and the end of a flexible hose extending from the lower portion of the roller support plate to the rear wellhead side is connected to the wellhead side piping, When the other end of the flexible hose extending rearward from the upper part is connected to the face side piping via a U-shaped pipe, the first bogie advances as the excavation proceeds, and the second bogie moves on the first bogie on the guide rail. Moves backward at half the speed of the first bogie along the first bogie, and the curved portion of the flexible hose is arranged in a semicircular shape of the first bogie.
After turning from top to bottom along the conveyor roller and leaving the first conveyor roller, it is linearly extended behind the first carriage. At this time, since the first conveyor roller and the second conveyor roller that are in contact with the flexible hose rotate, the excavation speed of the shield machine is as low as about 20 mm / min, and the flexible hose moves smoothly without any trouble. It is paid out. Further, the first and second conveyor rollers are fixed to the second carriage via the roller support plate, and the second carriage is mounted on the guide rail, so that the left and right sides of the second carriage do not move back and forth. The second bogie moves smoothly.

Then, the flexible hose is extended linearly behind the first bogie, the second bogie reaches the rear end of the guide rail, and cuts off the wellbore side piping halfway, and then guides the second bogie. When the flexible hose is moved forward along the rail, the curved portion of the flexible hose pivots upward from below along the first conveyor roller arranged in a semicircle, and the flexible hose extends rearward of the first bogie. The length is shortened, and a space for additional piping is formed at the cutoff portion of the wellhead-side piping. Also at this time, since the first conveyor roller and the second conveyor roller that are in contact with the flexible hose rotate, the flexible hose moves smoothly without any trouble. In addition, the movement of the second carriage is performed smoothly.

On the other hand, the end of the guide rail on the wellhead side (rear end)
When the semi-circular projection formed by the arrangement of the first conveyor rollers is directed backward, the end of the flexible hose extending from the lower portion of the roller support plate to the front face side is faced. By connecting the other end of the flexible hose extending forward from the upper portion of the roller support plate to the wellhead side pipe via a U-shaped pipe, the flexible The hose can be extended to the wellhead side, and the extended flexible hose can be shortened to the original length after the addition of the wellhead side piping.

The pipes on the face side and the wellhead side used in the present invention are used for muddy water, fresh water, backfilling or vacuum,
A flexible hose having an appropriate material and a diameter may be selected and used depending on which of them is connected. When used for connecting a muddy pipe, two flexible hoses are used for mud feeding and mud discharging, so that the length of the first conveyor roller is set to such an extent that the two flexible hoses can be arranged in parallel. It is preferable to provide a flange in the middle to prevent direct contact between the flexible hoses. Further, as described in claim 2, the roller support plate is
A flexible hose for feeding mud can be wound on one side of the central roller support plate, and a flexible hose for discharging mud can be wound on the other side of the central roller support plate. Also, one flexible hose for fresh water, one for vacuum, and one for compressed air are added to the two flexible hoses for muddy water, and six roller support plates are used for a total of five flexible hoses. Can be installed side by side. In addition, since the flexible hoses for fresh water, vacuum, and compressed air are thinner than those for muddy water, the roller support plate and the second carriage can be downsized and provided separately from those for muddy water.

[0012]

In FIG. 2, reference numeral 1 denotes a bogie rail similar to the above, which is laid in a tunnel, and 20 denotes a first bogie, which rides on the bogie rail 1 through wheels 21 and has a front end (face side). ) Is connected to the shield machine via the connecting tool 22 and various carts (not shown). On the first carriage 20, a frame 23 made of shaped steel is erected,
A cross section I is provided on side beams 23a in the front-rear direction provided on both left and right sides of the frame 23 (front side and back side of the drawing).
A letter-shaped guide rail 24 is fixed, and a second carriage 25 is mounted on the left and right guide rails 24 via front, rear, left and right wheels 26.

As shown in FIGS. 3 and 4, the second carriage 25 is formed in a rectangular frame shape by a front frame 25a, a rear frame 25b and a pair of left and right vertical frames 25c made of a shaped steel. Wheels 26 with flanges are provided on the front and rear surfaces of the lower surface 25c, hooks 27 (see FIG. 5) are provided on the intermediate lower surface to engage with the lower surface of the upper edge of the guide rail 24 having an I-shaped cross section, and further on the left and right vertical frames 25c. , The auxiliary frame 28 is fixed. A pair of left and right small rollers 30 sandwiching the upper edge of the guide rail 24 are provided on the lower left and right lower surfaces of the front frame 25a (see FIGS. 3 and 4) and the lower left and right surfaces of the rear frame 25b via brackets 29, respectively. Can be

In FIG. 3 and FIG. 4, the left, middle, and right three semicircular roller support plates 31 and a half connecting the inner peripheral edge thereof are provided in the inner space of the frame-shaped second bogie 25. A cylindrical connecting plate 32 is passed so that the top of the semicircular arc faces forward, and a portion slightly above the middle of the left and right roller support plates 31 is fixed to the inner surface of the auxiliary frame 28 on the second carriage 25. Is done.
On the other hand, a total of three left, middle, and right vertical beams 33 are vertically inserted near the rear portion of the second carriage 25, and the left and right vertical beams 33 are fixed to the auxiliary frame 28.
Each intermediate portion of the vertical beam 33 of the book is
(See FIG. 4), the upper and lower ends are connected to the inner surfaces of the upper and lower ends of the connecting plate 32, and the intermediate portion of these vertical beams 33 and the inner surface of the semi-cylindrical connecting plate 32 are raised forward. Inclined beam 34 (see FIG. 3), forward horizontal beam 35
And are connected by an inclined beam 36 descending forward.

A plurality of first cylinders are provided between a central semi-circular roller support plate 31 and left and right semi-circular roller support plates 31 along a semi-cylinder surrounding a semi-cylindrical connecting plate 32, respectively. Conveyor rollers 37 are arranged at equal intervals and with the axis line extending in the width direction, and the left and right shaft portions are supported by a support 38 fixed to the semicircular roller support plate 31. A large number of second conveyor rollers 39 are radially arranged on opposing surfaces of the central semi-circular roller support plate 31 and the left and right semi-circular roller support plates 31, and the shaft portions at both ends are semi-circular. It is supported by a support 40 fixed to the shaped roller support plate 31. Note that the first conveyor roller 37 is made larger in diameter than the second conveyor roller 39.

In FIG. 2, a front projecting stand 2 of a frame 23 is shown.
The winch 41 is installed on 3d, and the tip of the wire rope 42 is connected to the front end of the second carriage 25. Then, as shown in FIG.
Flexible hoses 9A for sending mud on the right and left sides of
And a flexible hose 9B for mud discharge is wound and bent into a U-shape (see FIG. 2), each end is extended rearward, and each upper straight portion of the flexible hoses 9A, 9B is formed into a U-shape. Tube 10A,
The lower straight portions of the flexible hoses 9A and 9B are connected to the well-side mud pipes 12 for mud feeding and mud discharging, respectively. A switching valve is interposed in the water pipe 12. The lower straight portions of the flexible hoses 9A and 9B are supported by a large number of third conveyor rollers 43 arranged on the floor of the first truck 20.

In the above structure, when excavation by the shield machine is started, the first bogie 2
0 (see FIG. 2) moves forward, and the second carriage 25 is moved to the first carriage 20.
The upper part moves rearward along the guide rail 24, and the curved portions of the flexible hoses 9A and 9B are guided by the first conveyor roller 37 and the second conveyor roller 39 to smoothly turn from top to bottom. After leaving the conveyor roller 37 and the second conveyor roller 39, they are put on the third conveyor roller 43, and further linearly extended to the rear of the first carriage 20. Then, after the second bogie 25 reaches the rear end of the guide rail 24 as shown by the dashed line, and the wellhead side pipe (mud pipe for mud feeding and mud discharging) is cut off halfway, the second bogie 25 Is pulled forward by the driving of the winch 41, the flexible hose 9
The curved portions of A and 9B pivot upward from the bottom along the arrangement of the first conveyor roller 37 and the second conveyor roller 39, and the lower straight portions of the flexible hoses 9A and 9B pass on the third conveyor roller 43. The flexible hoses 9A and 9B which have advanced smoothly and extended to the rear of the first bogie 20 are shortened, and a space for additional pipes is provided at a cut-off portion of wellhead-side pipes (mud pipes for mud feeding and mud discharging). Is formed.

In this embodiment, since the wire rope 42 of the winch 41 is connected to the second bogie 25, a brake is applied to the second bogie 25 when the second bogie 25 moves rearward of the first bogie 20 in accordance with the excavation. The wobble of the carriage 25 can be prevented. A small roller 30 sandwiching the guide rail 24 between the second carriage 25 and a hook 2 engaged with the guide rail 24.
7, the traveling of the second bogie 25 becomes smoother, and the second bogie 25 does not come off the guide rail 24.

[0019]

As described above, according to the present invention, as the excavation proceeds, the first bogie is advanced at the same speed as the shield machine, and the second bogie is moved along the guide rail on the first bogie. The flexible hose extending rearward of the first bogie can be extended longer by moving the bogie backward at half the speed of the bogie, and the second bogie can be moved over the first bogie on the guide rail at the time of addition of the wellhead side piping. By moving forward along
The flexible hose extending rearward of the bogie can be shortened. In addition, since the roller support plate itself does not rotate, the size of the roller support plate can be reduced to half that of the conventional flexible hose winding drum, the structure is simplified, and the manufacturing cost is reduced.
Further, since the roller support plate is fixed on the second carriage, the advancing and retreating on the guide rail becomes smooth.

[Brief description of the drawings]

FIG. 1 is a side view of a conventional device.

FIG. 2 is a side view showing the embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a main part of FIG. 1;

FIG. 4 is a sectional view taken along line AA of FIG. 2;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

[Explanation of symbols]

 1: Bogie rail 9: 9A, 9B: Flexible hose 10: 10A, 10B: U-shaped pipe 11, 11A, 11B: Face-side muddy pipe (face-side piping) 12: Well-side muddy pipe (well-side piping) Reference Signs List 20: first truck 21: wheels 22: coupling tool 23: frame 24: guide rail 25: second truck 26: wheels 27: hook 30: small roller 31: roller support plate 32: coupling plate 37: first conveyor roller 39 : Second conveyor roller 41: Winch 42: Wire rope 43: Third conveyor roller

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Sato 1-27-8 Shinmachi, Nishi-ku, Osaka-shi, Osaka Wakuya Yotsubashi Building Actio Co., Ltd. (72) Inventor Ryoji Ueda 4-73 Higashi Nobumatsu, Himeji-shi, Hyogo Shares Japan Technology Center Co., Ltd. (72) Inventor Akinori Ren 4-73, Higashi-Nobumatsu, Himeji City, Hyogo Prefecture Stock Company Japan Technology Center (72) Inventor ▲ Tomi ▼ Teruya Oka 4-73, Higashinobumatsu, Himeji City, Hyogo Prefecture Stock Company (56) Reference JP-A-53-27236 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 9/06 301

Claims (2)

(57) [Claims] 1. A first vehicle capable of traveling on a rail in a tunnel.
A pair of left and right guide rails are provided on the carriage in the front-rear direction, and a second carriage is mounted on the guide rails, and the second carriage supports two or more rollers composed of a plane including a horizontal line and a vertical line in the front-rear direction. Plates are juxtaposed at an arbitrary interval, and a number of first conveyor rollers are arranged along a semicircle convex forward or backward between two adjacent roller support plates. A number of second conveyor rollers are radially disposed outside the semicircle on the facing surface, and the number of the first conveyor rollers is large.
A flexible hose is wound on a conveyor roller and bent into a U-shape. One end of this flexible hose is connected to the rear end of a cutting-face-side pipe extending toward the shield machine being excavated by a muddy-water pressurized shield method, and the other end thereof. The hose bogie for a shield method is connected to a front end of a well-side pipe extending to a well side. 2. Three roller support plates are arranged in parallel at equal intervals,
2. The hose truck according to claim 1, wherein a flexible hose for feeding muddy water is wound on one side of the central roller support plate, and a flexible hose for discharging muddy water is wound on the other side.