JP3448512B2 - Pipe laying 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 method of laying a pipe in a pipe laying passage such as a tunnel or an existing pipe.

[0002]

2. Description of the Related Art When a pipe is laid in a passage for laying a pipe such as a tunnel or an existing pipe, the pipe to be laid is carried into the passage by a carrier truck and the pipe is carried in. The body is connected to the pipe that was previously loaded. A battery car or the like is used for traveling of the carrier vehicle, and the pipes that have been carried in are connected using a fastener such as a wire type or a propulsive force of the battery car or the like.

When the pipe carrier truck travels, there is a case where a rail is installed on the surface of the transport path and the rail travels, or a case where the rail travels directly on the surface of the transport path. The method of traveling the rail has an advantage that the carrier can be smoothly traveled and a pipe as a cargo can be stably carried in, but there is a problem that it takes time to install and remove the rail. On the other hand, the method of directly traveling on the transportation route surface does not require the installation and removal of rails, but the load tends to become unstable due to unevenness of the road surface,
In addition, the propulsion loss of battery cars and the like is also large.

Further, as a carrier cart, a carrier cart is inserted into the pipe body, the front and rear wheels thereof are grounded outside the front and rear ends of the pipe body, and the pipe body is supported and transported from the inner surface side. Type carrier vehicles may be used. This carcass-carrying type carrier has a chassis and the pipe support on the chassis that fits inside the pipe, and does not protrude beyond the outer diameter of the pipe except for the wheels. It has the advantage that a pipe with a large outer diameter, which is close to the inner diameter of the pipe, can be carried in and the space such as a tunnel can be used to the maximum.

[0005] However, in the case of the conventional basket scraping type carrier, when inserting and removing in the pipe body, it is necessary to lift the front wheel to land on the inner surface of the pipe body and roll the front wheel inside the pipe body. There is a problem that it takes time to insert into and remove from the tube, and when the front wheel rolls inside the tube, the surface of the tube is easily scratched.

Therefore, an object of the present invention is to provide a method of laying a pipe body which can be carried in and laid in a pipe laying passage easily and stably without damaging the pipe body.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a pipe body provided with a rail along a pipe laying passage and a pipe body laid by a carrier truck running on this rail. Carry it into the laying aisle, and then carry in the carrier truck.
The trolley is inserted into and removed from the
The front and rear wheels outside the front and rear ends of the pipe
A tube support hand that is grounded on the rail and is provided on the chassis of the bogie.
One that supports the inner surface of the tube with a step and transports the tube
And, in the laying method of the tubular body for laying the loaded tube to tube laying path, the pre-Symbol rail, formed by connecting the finite length of the pipe rail unit coupled with sleepers member, the trajectories
By using the strips as a centering guide, the loaded pipes are arranged and laid on the rails, and the rails are embedded together with the pipes.

That is, by forming a rail for traveling the carrier by connecting a pipe rail unit having a finite length, the rail can be easily installed by using a lightweight rail unit, and the pipe that has been carried in can be mounted on this rail. By laying the rails on top of the rails and embedding the rails together with the pipes, it is not necessary to remove the rails, and the pipes can be stably carried into the pipe laying passage with little effort. In addition, since the above-mentioned basket-carrying type carrier is used as the carrier, the loaded pipes can be arranged directly on the rails, and the rails can be used as a centering guide to efficiently connect the pipes. It can be carried out.

By forming the sleeper member of the pipe rail unit by convexly bending downward, when the pipe laying passage is in the existing pipe, the convex curve of the sleeper member extends along the inner surface of the existing pipe. Accordingly, the rail can be stably installed, and contact damage of the tubular body with the sleeper member in the tubular body connecting work can be prevented especially when laying a tubular body having a small diameter.

The transport carriage is to be inserted into and removed from the pipe body from the front wheel side, and is made of a rubber which is pulled out from the lower end of the front wheel at a position close to the front wheel on the rear side of the front wheel on the chassis of the carriage. Alternatively, by providing a resin-made auxiliary wheel, the front wheel can be attached to and detached from the rail on the front end side of the pipe body while the auxiliary wheel is in contact with the inner surface of the front end side of the pipe body when inserting and removing the truck. Then, by rolling the auxiliary wheel inside the pipe with the front wheel floating above the inside of the pipe, the carriage can be easily inserted into and removed from the pipe without damaging the inside of the pipe.

On the front side of the carriage, there is provided an arm for a tube pusher which is expandable to a size larger than the inner diameter of the tube.
By connecting the battery car to the rear end side of the transport carriage, the pipe body is carried in and the carriage is extracted from the pipe body,
This pusher arm is expanded and placed over and abutted on the rear end edge of the loaded pipe body, and in this state, the carriage is moved forward by the battery car to balance the carry-in pipe body with the pipe body previously loaded. It can be pressed well and connected.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, based on FIG. 1 to FIG.
An embodiment of the present invention will be described. In this pipe laying method, as shown in FIG. 1, a new FRP pipe 2 is laid in an existing pipe 1 buried in the ground, and it is provided in the middle of the existing pipe 1. A tube body 2 is hung from a vertical hole 3 by a crane (not shown), and a battery car 5 and a carrier truck 6 that travel along a pipe rail 4 installed along an existing pipe 1 are run.
Thus, the suspended pipe body 2 is carried to the target position in the existing pipe 1 and laid as a new pipe. The pipe rail 4 is formed by connecting a lightweight pipe rail unit 7 of a finite length so that it can be easily installed, and is embedded in the existing pipe 1 as it is along with a new pipe.

As shown in FIGS. 2 and 3, the battery car 5 has a motor 9 to which electric power is supplied from a battery 8.
Then, the front and rear wheels 10 are respectively driven, and the rear end side of the carriage 6 is connected to the coupler 11 provided on the front end side thereof. An arcuate gripping surface 12 for gripping the pipe rail 4 is provided on the outer diameter surface of each wheel 10.

A control panel 13 and an operation panel 14 are arranged on one side behind the battery 8, and a driving lever 15 and a brake pedal (not shown) are provided in a space on the side thereof.
Is provided. A folding seat 16 for driving is attached to the front and rear ends of the driving lever 15, and the battery 8
A foldable step 17 for moving to the front end side of the battery car 5 is attached to the side of. Also,
Headlamps 18 are provided at the front and rear ends of the battery car 5 and a control panel 13
A revolving light 19 is attached on the top of the.

As shown in FIGS. 4 and 5, the carrier vehicle 6 is inserted into the pipe body 2 to be carried in, and a chassis 22 having front wheels 20 and rear wheels 21 attached to front and rear ends thereof, and a chassis 22.
A pair of swing arms 24, which are lifted up and down by jacks 23, as pipe support means provided above and a position attached to the chassis 22 and closer to the front wheels 20 on the rear side of the front wheels 20, are moved up and down by the cylinder 25. The auxiliary wheel 26 is made of urethane rubber and is basically configured by a folding telescopic tube pusher arm 27 provided on the front side of the chassis 22.

Like the wheels 10 of the battery car 5, the grip surfaces 28 of the pipe rails 4 are provided on the outer diameter surfaces of the front and rear wheels 20 and 21, and the outer diameter corners of the front wheels 20 on the truck width end side. Is provided with a smooth notch 29. Auxiliary wheel 2
6 are provided in a left-right pair at the center of the vehicle width inside the pipe rail 4.

The base ends of the pair of swing arms 24 are
It is attached to each support column 30 provided from the center of the chassis 22 and each tip is directed to the front and rear ends of the chassis 22. At the tip of each swing arm 24, an upward L-shaped support member 31 that can swing freely in a vertical plane is attached. 4 and 5 show a process of transporting the pipe body 2 by the transport carriage 6, in which each swing arm 24 is raised and the inner peripheral edges of the front and rear ends of the pipe body 2 are supported by the support member 31, The L-shaped short side of the support member 31 prevents the tubular body 2 from coming off in the axial direction. A receiving portion 32 for connecting the tubular body is provided on the rear end side of the tubular body 2.

FIGS. 6 and 7 show a process of inserting the carrier truck 6 into the pipe body 2 suspended on the pipe rail 4. First, the receiving portion 32 at the rear end of the pipe body 2 and the pipe rail 4
The slope table 33 is passed over the inner surface of the existing pipe 1 in between, and the auxiliary wheel 26 is pushed downward by the cylinder 25,
Land on the slope stand 33, and attach the front wheel 20 to the pipe rail 4
Let it rise from. In this state, the auxiliary wheel 26 is guided along the slope table 33 to the inner surface of the rear end side of the tube 2 to
Roll toward the front end along the inner surface of the, and as shown in FIG.
The carrier truck 6 is inserted into the pipe body 2 until the front wheel 20 projects from the front end of the pipe body 2. At this time, each swing arm 24 is in the lowered position, and as shown in FIG. 7, the front wheel 20 also floats up to a position where it does not contact the inner surface of the tubular body 2. As described above, the smooth cutouts 29 are provided at the outer diameter corners of the front wheels 20 on the truck width end side so that the front wheels 20 do not come into contact with the inner surface of the tube 2 even if the tube 2 has a smaller diameter. It has become.

At the position shown in FIG. 6, the auxiliary wheel 26 is retracted upward by the cylinder 25, the front wheel 20 is grounded to the pipe rail 4 at the front end side of the pipe body 2, and then each swing arm 24 is raised. Let the support member 31 guide the tube 2
By supporting the inner surface side of the sheet, the transport state shown in FIG. 4 is obtained.

In the state shown in FIGS. 4 and 5, after the pipe body 2 has been carried into the existing pipe 1 and has been carried in to a position just before the rear end of the newly laid pipe, each swing arm 24 is lowered to move the pipe. The body 2 is lowered onto the pipe rail 4. At this time,
As shown in FIG. 8 and FIG. 9 described later, a spacer 34 is bitten on the front end side of the tubular body 2, and the height position of the front end of the tubular body 2 is set to the receiving portion 32 of the tubular body 2a that has been previously loaded and laid. Adjustable to height position.

The operation of pulling out the carrier truck 6 from the inside of the pipe body 2 is performed in the reverse order of the above-mentioned insertion operation. That is, the auxiliary wheel 26 is pushed downward to land on the inner surface of the front end side of the tubular body 2, and the front wheel 20 is lifted up to a position where it does not contact the inner surface of the tubular body 2, and the auxiliary wheel 26 is moved back along the inner surface of the tubular body 2. Roll to the end and pull out to the outside of the tube body 2 using the slope stand 33. After that, the front wheel 20 is grounded to the pipe rail 4 on the front side of the rear end of the pipe body 2 by retracting the auxiliary wheel 26 upward.

8 and 9 show a process of connecting the front end of the pipe body 2 which has been carried in to the rear end of the pipe body 2a which has been previously carried in and installed. The carrier truck 6 extracted from the pipe body 2 by the above-described procedure has the pusher arm 27 that is folded and stored.
However, after being horizontally tilted, it is expanded to the left and right, and the pusher arm 27 is placed across and abutted on the rear end edge of the tubular body 2.

After that, the battery car 5 connected to the rear end of the carrier vehicle 6 advances, the pipe body 2 is pushed forward by the pusher arm 27 along the pipe rail 4, and the height of the spacer 34 is increased by the spacer 34. The front end of the tube body 2 whose position has been adjusted is connected to the receptacle 32 at the rear end of the tube body 2a that has been previously loaded and installed. The spacer 34 is also embedded in the existing pipe 1 together with the pipe rail 4. The battery car 5 and the carrier truck 6 that have completed the connection work of the pipe body 2 are returned to the position of the vertical hole 3 again, the next pipe body is carried in to the position before the rear end side of the pipe body 2, and the connection work is repeated. .

The pipe rail unit 7 is shown in FIG.
As shown in (a), two pipes 35 of finite length are connected in parallel by a sleeper member 36. The sleeper member 36 on one end side is provided with a coupling hole 37 for unit connection. And the connecting piece 38 attached to the other end of the sleeper member 3
6 is a connecting hole 37 of the adjacent pipe rail unit 7.
A coupling hole 39 is provided for bolting with. Further, a guide rod 40 that is inserted into the end of the pipe 35 of the adjacent pipe rail unit 7 is also attached to one end of each pipe 35.

As shown in FIG. 10B, the above-mentioned sleeper member 36 is curved downwardly in a convex shape. This curved shape is
As shown in FIGS. 3 and 5, it is formed so as to substantially match the inner surface curvature of the existing pipe 1, and the pipe rail 4 can be stably installed in the existing pipe 1. Further, even when the pipe body 2 to be laid has a small diameter, it is possible to prevent contact damage of the pipe body 2 with the sleeper member 36 in the pipe body connecting work.

Although the above-described embodiment has shown the method of laying a new pipe body in an existing pipe, the pipe laying method of the present invention is also adopted when a pipe body is laid in a normal tunnel. can do. Further, as the carriage for transporting the pipe body, the basket-carrying type carriage with auxiliary wheels is used, but a conventional caring-carrying type carriage without auxiliary wheels can also be used.

[0027]

As described above, according to the pipe laying method of the present invention, since the rail for running the carrier is formed by connecting the pipe rail units of finite length, it is easy to use the lightweight rail unit. A rail can be installed, the pipes that have been carried in can be arranged and laid on this rail, and the rails can be embedded together with the pipe, eliminating the need to remove the rails and stabilizing the pipes with little effort. It can be carried into the pipe laying passage. In addition, since a basket-carrying type carrier is adopted as the carrier, the loaded pipes can be arranged directly on the rails, and the rails can be used as a centering guide for efficient pipe connection work. it can.

By forming the sleeper member of the pipe rail unit by convexly curving downward, when the pipe laying passage is in the existing pipe, the convex curving of the sleeper member extends along the inner surface of the existing pipe. Accordingly, the rail can be stably installed, and contact damage of the tubular body with the sleeper member in the tubular body connecting work can be prevented especially when laying a tubular body having a small diameter.

Further, it is assumed that the transport carriage for the pipe body is inserted into or removed from the pipe body from the front wheel side, and the carriage carriage is projected below the lower end of the front wheel at a position close to the front wheel behind the front wheel. By installing the auxiliary wheel made of rubber or resin that retracts, the front wheel is placed on the front end side of the pipe body while the auxiliary wheel is in contact with the inner surface of the front end side of the pipe body when inserting / removing the carriage. The auxiliary wheels roll inside the pipe with the front wheels floating above the inside of the pipe, so that the carrier can be easily inserted into and removed from the pipe without damaging the inside of the pipe. it can.

Further, a pipe pusher arm that can be expanded larger than the inner diameter of the pipe is provided on the front side of the carrier, and the battery car is connected by connecting the battery car to the rear end of the carrier. Then, after pulling out the carrier truck from the pipe body, the pusher arm is expanded, passed over and brought into contact with the rear end edge of the carried-in pipe body, and in this state, the carrier truck is advanced by the battery car, It is possible to press the carry-in pipe body against the pipe body previously loaded and installed in a well-balanced manner, and connect the pipe body without a fastener.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a process of loading a tubular body into an existing pipe by the method of the present invention.

FIG. 2 is a front view showing the battery car of FIG.

FIG. 3 is a side view of FIG.

FIG. 4 is a front view showing the carrier truck of FIG.

5 is a side view of FIG.

6 is a front view showing a process of inserting the carrier truck of FIG. 1 into a pipe body.

FIG. 7 is a side view of FIG.

FIG. 8 is a front sectional view showing a process of connecting pipes in an existing pipe by the method of the present invention.

9 is a sectional view taken along line VIII-VIII in FIG.

10 is a plan view showing the pipe rail unit of FIG. 1, and b is a side view of a.

[Explanation of symbols]

1 Existing piping 2, 2a tube 3 vertical holes 4 Pipe rail 5 battery car 6 carrier trucks 7 Pipe rail unit 8 battery 9 motors 10 wheels 11 coupler 12 gripping surface 13 Control panel 14 Operation panel 15 Driving lever 16 seats 17 steps 18 headlights 19 revolving light 20 front wheels 21 rear wheel 22 chassis 23 Jack 24 swing arm 25 cylinders 26 auxiliary wheels 27 Pusher arm 28 Gripping surface 29 Notches 30 props 31 Support member 32 Mouthpiece 33 Slope stand 34 Spacer 35 pipes 36 sleeper members 37 holes 38 connection piece 39 holes 40 guide rod

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Unexamined Patent Publication No. 6-344901 (JP, A) Actual exploitation Sho 62-177979 (JP, U) Actual exploitation Flat 2-5499 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) F16L 1/00 B61B 13/10 E21D 11/40

Claims (2)

(57) [Claims] 1. A pipe is installed along a pipe laying passage, a pipe laid by a carrier truck traveling on the rail is loaded into the pipe laying passage, and the transport trolley is loaded into the pipe.
With a shape that allows it to be inserted into and removed from the inside, with the dolly inserted in the pipe
Then, make the front and rear wheels track outside the front and rear ends of the pipe body respectively.
It is grounded, and by the pipe support means provided on the chassis of the truck.
The inner surface side of the pipe body is supported to convey the pipe body,
In laying method of the tubular body for laying the loaded tube to tube laying path, the pre-Symbol rail, formed by connecting the finite length of the pipe rail unit coupled with sleepers member, core the rail
A method for laying pipes, wherein the pipes that have been carried in are arranged and laid on the rails so that the rails are embedded together with the pipes by using the rails as guides . 2. The sleeper member of the pipe rail unit,
The pipe laying method according to claim 1, wherein the pipe body is formed by curving downwardly.