JP3020951B1 - Tube transport trolley - Google Patents

Abstract

An object of the present invention is to provide a tube carrier that is compact and easily inserted into and removed from a tube. SOLUTION: An auxiliary wheel 8 made of urethane rubber which is moved up and down by a cylinder 7 is provided at a position closer to the front wheel 2 on the rear side than the front wheel 2 so that the auxiliary wheel 8 is brought into contact with the inner surface of the front end side of the tube 1. In a state where the front wheels 2 are in contact with each other, the front wheels 2 can be attached to and detached from rails 11 laid in the existing pipe 10 at the front end side of the tube 1.
Is rolled in the tubular body 1 so that the bogie can be easily inserted into and removed from the tubular body 1 without damaging the inner surface of the tubular body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage for carrying a pipe into a tunnel or an existing pipe.

[0002]

2. Description of the Related Art Conventionally, when a pipe is carried into a tunnel or an existing pipe, a bogie is inserted into the pipe and its front and rear wheels are positioned outside the front and rear ends of the pipe. In this case, a so-called palanquin-type transport cart is often used in which the pipe is grounded on the transport route surface and the pipe is supported and transported from the inner surface side. In this palanquin-type carrier, the undercarriage and the pipe support means on the undercarriage are housed inside the pipe, and do not protrude beyond the outer diameter of the pipe except for the wheel part. There is an advantage that a pipe with a large outer diameter, which is close to the inner method, can be carried in and the space such as a tunnel can be utilized to the maximum.

[0003] Since the above-mentioned palanquin-type transport cart is usually inserted into the pipe from the front wheel side, the front wheel is lifted to land on the inner surface of the rear end of the pipe, and the front wheel is moved to the front end in the pipe. After rolling up to the side, the front wheel is lifted again, and is brought into contact with the transport path surface on the front end side of the tubular body. Extraction work from the inside of the bogie of the bogie after loading of the tubular body,
This is generally performed in the reverse order. For this reason, the conventional palanquin-type transfer cart takes time and effort to lift the front wheel for insertion and removal into the pipe, and when rolling the front wheel in the pipe,
There was a problem that the inner surface of the tube was easily damaged.

[0004] To solve this problem, Japanese Patent No. 2,635,457.
As shown in FIG. 7, in the palanquin-type transfer truck described in Japanese Patent Application Laid-Open Publication No. H11-64873, a retractable rubber auxiliary wheel 23 that is in contact with the inner surface of the tube 22 is provided at the front end of the truck 21 and the front wheel is provided. 2
4 also moves to and from the transport path surface 25.

More specifically, when the carriage 21 is inserted into the tube 22, the auxiliary wheels 23 are lowered to a position where they come into contact with the inner surface of the tube 22, and the front wheels 24 are stored in a standby position separated from the transport path surface 25. And the auxiliary wheels 23
After rolling to the front end side in the inside, the stored front wheel 24 is taken out, and the front end side of the tubular body 22 is brought into contact with the transport path surface 25. After the front wheel 24 is grounded, the tube 22 is pushed up and supported from the inner side by a truss device 26 that is extended, and is carried into a target place.

[0006] The above-described palanquin-type carriage has the rubber auxiliary wheel 23 that moves in and out of the tube 22 so that the carriage 2
Since 1 is inserted into the tube 22, the inner surface of the tube 22 can be prevented from being damaged by the front wheel 24 described above. However, since the auxiliary wheels 23 are provided closer to the front end of the bogie 21 than the front wheels 24, the front wheels 24 are positioned inside the pipe 22 when the auxiliary wheels 23 roll to the front end of the pipe 22. ,
In order to ground the front wheel 24 to the transport path surface 25 on the front end side of the tube 22, some auxiliary device for guiding the auxiliary wheel 23 to the outside of the tube 22 is required, and there is a problem that it takes time to ground the front wheel 24. . Further, since a device for moving the large-diameter front wheel 24 is required, there is also a problem that it is difficult to make the carriage 21 compact.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tube carrier which is compact and can be easily inserted into and removed from the tube.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a cart having a shape which can be inserted into and removed from a pipe to be conveyed. A tube for transporting the tube by contacting the front and rear wheels with the transfer path surface outside the front and rear ends of the tube, and supporting the inner surface of the tube by tube support means provided on the undercarriage of the bogie. In the transfer trolley, the trolley is inserted into and pulled out of the tube from the front wheel side, and the trolley of the trolley is made of rubber or retreating below the lower end of the front wheel at a position closer to the front wheel behind the front wheel. This adopts a configuration in which an auxiliary wheel made of resin is provided.

That is, since a rubber or resin auxiliary wheel which protrudes and retreats below the lower end of the front wheel is provided at a position closer to the front wheel on the rear side than the front wheel, when the bogie is inserted into the tube. In a state in which the auxiliary wheel is brought into contact with the inner surface of the pipe and rolled to the front end of the pipe, the front wheel protrudes out of the pipe from the front end side of the pipe, and the auxiliary wheel is retracted in this state. Thus, the front wheels can be easily brought into contact with the transport path surface. After the front wheels are grounded on the transport path surface, the pipe is supported from the inner surface side by the pipe support means in the same manner as in the conventional palanquin-type transport cart.

When the auxiliary wheels are mounted on the inner surface of the rear end of the tubular body, a slope base is placed on the rear end side of the tubular body, and the auxiliary wheels are lowered below the front wheels. Along the inner surface of the rear end of the tube.
Also, with the auxiliary wheels lowered and the front wheels lifted off the transport path surface, the bogie is advanced to a position where the front wheels enter the inside of the tube, and in this state the auxiliary wheels are retracted and the front wheels are moved to the inner surface of the tube. The trolley is advanced slightly with the front wheels to guide the auxiliary wheels into the inside of the tube.At this position, the auxiliary wheels are lowered again to land on the inner surface of the rear end of the tube, and the front wheels are connected to the tube. You can float it from the inside.

The operation of extracting the bogie from the tube is as follows:
It can be easily performed by the reverse procedure of the above-mentioned insertion work. That is, after the support of the pipe by the pipe support means is released, the auxiliary wheels are lowered and landed on the inner surface of the front end side of the pipe, and the front wheels are lifted from the transport path surface to a position not in contact with the inner surface of the pipe, and the auxiliary wheels are lifted. To the rear end of the tube. When the auxiliary wheels are moved outward from the rear end of the tubular body, the above-described method using the slope table or the method of slightly retracting the bogie with the front wheels can be adopted.

The carrier truck travels on a rail laid on the surface of the carrier path, and a rail gripping surface is provided on the outer diameter surface of the pair of left and right front and rear wheels. By smoothly cutting the corners, the bogie can be transported smoothly by reducing the road surface resistance of the bogie, and when the bogie is inserted into or pulled out of the bogie, the front wheel is located on the bogie width end side. Make sure that the outside diameter corner does not hit the inside of the tube,
Damage to the inner surface of the tube can be prevented.

[0013] By providing means for extending and contracting the chassis of the carrier in the length direction and by making the span between the front and rear wheels variable, tubes of different lengths can be carried by the same carrier.

[0014] By providing a pipe pusher arm which can be expanded to be larger than the inner diameter of the pipe on the front side of the carrier, the pipe is carried in and the bogie is taken out from the pipe. The arm is extended, and is brought into contact with the rear end edge of the loaded tubular body, and the carriage is advanced in this state, whereby the loaded tubular body is pressed against the previously loaded tubular body in a balanced manner and connected. be able to.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The transport truck of this tube is
As shown in FIGS. 1 and 2, a chassis 4 inserted into a tube 1 to be conveyed, and a pair of left and right front wheels 2 and a rear wheel 3 attached to front and rear ends, and a tube provided on the chassis 4. A pair of swing arms 6 lifted and lowered by jacks 5 as support means
And the front wheel 2 attached to the chassis 4 and on the rear side of the front wheel 2
, And is basically constituted by an auxiliary wheel 8 made of urethane rubber which is moved up and down by a cylinder 7 and a foldable telescopic tube pusher arm 9 provided on the front side of the chassis 4.

This bogie carries the FRP pipe 1 for providing a new pipe in the existing pipe 10 and is connected to a battery car (not shown) and laid in the existing pipe 10. It travels along the pipe rail 11. An arc-shaped gripping surface 12 for gripping the rail 11 is provided on an outer diameter surface of each of the front and rear wheels 2, 3, and a smooth notch 13 is provided at an outer diameter corner portion of each front wheel 2 on a bogie width end side. ing. Note that the auxiliary wheels 8 are provided in a left-right pair at the center of the vehicle width inside the rail 11.

The base ends of the pair of swing arms 6 are attached to columns 14 provided at the center of the chassis 4, and the respective tips are directed toward the front and rear ends of the chassis 4. At the tip of each swing arm 6, an upward L-shaped support member 15 that can swing freely in a vertical plane is attached.

The chassis 4 includes a front chassis 4a and a rear chassis 4b.
The two chassis 4a, 4b are joined by insertion at the center of the chassis 4. The insertion portions 16 are formed so as to be slidable with each other, and by extending and contracting the chassis 4, the front and rear wheels 2,
3 and the span between the front and rear support members 15 can be adjusted.

FIGS. 1 and 2 show a process of transporting the tube 1 by a cart. Each swing arm 6 is raised, and the inner edges of the front and rear ends of the tube 1 are supported by the support member 15. The axial direction of the tube 1 is prevented from falling off at the L-shaped short side of the support member 15. In addition, on the rear end side of the tube 1, a socket 17 for connecting the tube is provided.

FIGS. 3 and 4 show the process of inserting the bogie into the tube 1 placed on the pipe rail 11. First,
The slope base 18 is inserted into the existing pipe 10 between the socket 17 at the rear end of the pipe 1 and the rail 11, and the auxiliary wheel 8 is pushed downward by the cylinder 7 to land on the slope base 18, and the front wheel 2 is moved. Float from rail 11. In this state, the auxiliary wheel 8 is guided along the slope base 18 to the inner surface on the rear end side of the tubular body 1 and rolled to the front end side along the inner surface of the tubular body 1, and as shown in FIG. The bogie is inserted into the tube 1 to a position protruding from the front end of the tube 1. At this time, each swing arm 6 is at the lowered position, and as shown in FIG. 4, the front wheel 2 is also raised to a position where it does not come into contact with the inner surface of the tubular body 1. At the outer diameter corner on the bogie width end side of each front wheel 2,
A smooth notch 13 is provided so that even if the tube 1 has a smaller diameter, it does not contact the inner surface thereof.

At the position shown in FIG. 3, the auxiliary wheel 8 is retracted upward by the cylinder 7, and the front wheel 2 is brought into contact with the pipe rail 11 at the front end side of the tube 1, and thereafter, each swing arm 6 is raised. Then, by supporting the inner surface side of the tubular body 1 with the support member 15, the transport state shown in FIG. 1 is obtained.

After the pipe 1 is carried to the target position in the existing pipe 10 in the state shown in FIGS. 1 and 2, each swing arm 6 is lowered to lower the pipe 1 on the rail 11. At this time, as shown in FIG. 5 described later, a spacer 19 is bitten on the front end side of the tube 1, and the height of the front end of the tube 1 is set to the height of the receiving portion 17 of the tube 1 a carried in and installed earlier. Adjustable to the height position.

The operation of extracting the bogie from the tube 1 is performed in the reverse order of the above-described insertion operation. That is, the auxiliary wheels 8 are pushed downward to land on the inner surface of the front end side of the tube 1, and the front wheels 2 are raised to a position where they do not contact the inner surface of the tube 1, and the auxiliary wheels 8 are moved rearward along the inner surface of the tube 1. Roll to the end and pull it out of the tube 1 using the ramp base 18. Thereafter, the front wheels 2 are brought into contact with the rails 11 on the rear end side of the tubular body 1 by retracting the auxiliary wheels 8 upward.

FIGS. 5 and 6 show the process of connecting the front end of the loaded tube 1 to the rear end of the previously loaded tube 1a. The cart extracted from the inside of the pipe body 1 in the procedure described above is
The pusher arm 9 stored in a folded state is expanded horizontally to the left and right after being pushed down horizontally.
Is in contact with the rear end of the tubular body 1. Thereafter, the truck connected to the battery car moves forward and the tube 1
Is pushed forward by the pusher arm 9 along the rail 11, and the front end of the tube 1 whose height is adjusted by the spacer 19 is inserted into the receiving portion 17 at the rear end of the tube 1 a which has been previously installed and installed.
Connected to. The rail 11 and the spacer 19 are buried in the existing pipe 10 together with the pipe 1.

In the above-described embodiment, the auxiliary wheel is linearly moved up and down by the cylinder. However, the auxiliary wheel may be attached to the tip of the swing arm and moved up and down in a swing manner. The expansion and contraction means of the chassis can also be provided at an arbitrary portion such as the front and rear ends of the chassis, and the form thereof can be a sliding type, a replenishing type or the like.

Further, in this embodiment, the bogie is used for rail running, and the rail gripping surfaces are provided on the front and rear wheels. However, the truck may run on a road surface in a tunnel or an existing pipe.

[0027]

As described above, the tube carrier truck according to the present invention is a rubber or resin auxiliary member which protrudes and retreats below the lower end of the front wheel at a position closer to the front wheel behind the front wheel. Since the wheels are provided, the front wheels are separated from the transport path surface at the front end of the tube while the auxiliary wheels are in contact with the inner surface on the front end side of the tube, and the front wheels are lifted from the inner surface of the tube. By rolling the wheels in the tube, the bogie can be easily inserted into and removed from the tube without damaging the inside of the tube.

Further, by providing means for extending and contracting the carriage of the carriage in the length direction and by making the span between the front and rear wheels variable, pipes having different lengths can be carried by the same carriage.

Further, by providing a pipe pusher arm which can be expanded to be larger than the inner diameter of the pipe on the front side of the transporting trolley, the pipe is carried in and the trolley is extracted from the pipe. By extending the arm for use, extending and bringing into contact with the rear end edge of the loaded pipe, and moving the carriage forward in this state, the loaded pipe can be pressed against the existing pipe in a balanced manner and connected. .

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a transport cart.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a front view showing a process of inserting the transport cart of FIG. 1 into a pipe.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a partially omitted plan view showing a process of connecting pipes with the transporting cart of FIG. 1;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a front view showing a conventional transport cart.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a pipe 2 front wheel 3 rear wheel 4, 4a, 4b chassis 5 jack 6 swing arm 7 cylinder 8 auxiliary wheel 9 arm for pusher 10 existing piping 11 rail 12 gripping surface 13 notch 14 support 15 support member 16 insertion part 17 Reception part 18 Slope stand 19 Spacer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16L 55/00 B61B 13/10 B62B 3/10 E21F 13/02

Claims (4)

(57) [Claims] 1. A truck having a trolley shape which can be inserted into and removed from a pipe to be transported, and a pair of left and right front and rear wheels are respectively formed on a transport path surface outside the front and rear ends of the pipe when the trolley is inserted into the pipe. Ground, supporting the inner surface side of the tube by the tube support means provided on the trolley of the trolley, in the transfer trolley of the tube that transports the tube, the trolley is inserted into the tube from the front wheel side,
A tube transporting device, wherein a rubber or resin auxiliary wheel which protrudes and retracts below a lower end of the front wheel at a position closer to a front wheel on the rear side than the front wheel is provided on a chassis of the bogie. Trolley. 2. The vehicle according to claim 1, wherein the transport vehicle travels on a rail laid on a transport path surface, a rail grip surface is provided on an outer diameter surface of the left and right pair of front and rear wheels, and a bogie width end side of each of the front wheels. 2. The tube carrier according to claim 1, wherein the outer diameter corner portion is smoothly cut out. 3. The tube carrier according to claim 1, further comprising means for extending / contracting the carrier of the carrier in the longitudinal direction, wherein a span between front and rear wheels is variable. 4. The tube carrier according to claim 1, further comprising a tube pusher arm that is larger than the inner diameter of the tube and is expandable on the front side of the carrier.