JP2635457B2 - Insertable tube carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, there is a basket-type cart as a cart for carrying a pipe into an existing pipe or a tunnel. This is to insert the bogie into the pipe to be transported, support the bodily body from the inner surface side of the tubular body, and support the bogie against the shield by the front and rear wheels exposed outside the tubular body before and after the tubular body, Since the members for supporting the tube do not protrude outside the tube other than the wheels, the gap between the inner surface of the shield in the tunnel and the outer surface of the tube can be minimized, and the maximum Since the pipes could be carried in, the economic effect was maximized.

[0003]

However, in the conventional structure described above, the front wheel may damage the inner surface of the tube when the bogie is inserted into the tube, and when the bogie is pulled out after the tube is carried in. Sometimes there was a problem that the front wheel was caught in the tube. Further, when loading and unloading the tube, it is necessary to operate a lifting jig such as a jack for moving the tube up and down, so that there is a problem that it takes time to carry in the tube and pull out the cart.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides an insertion type tube bogie which can carry a bogie into the tube without damaging the inner surface of the tube and can easily pull out the bogie. The purpose is to do.

[0005]

In order to solve the above-mentioned problems, an insertion type tube truck according to the present invention comprises a truck having a shape which can be inserted into and removed from a tube to be conveyed, and a tube to be conveyed provided at a front end of the truck. A rubber auxiliary wheel device that moves back and forth between a position where it comes into contact with the inner surface of the body and a position that separates it, and a front wheel that is provided at the front of the bogie and that moves out and back between a position that comes into contact with the transport path surface and a position that separates Device, a rear wheel device fixed to the trolley, and a truss device provided on the trolley.
Device is separated from the position where it contacts the inner surface of the pipe to be transported.
And a pair of left and right
The lath and the left and right trusses are linked and connected and transported.
And a connecting member for pushing up the tube from the inner surface side .

[0006]

In the above construction, when the auxiliary wheel device is inserted into the pipe to be conveyed, the auxiliary wheel device is lowered to a position where it comes into contact with the inner surface of the tube, and the front wheel device is stored in a retracted position separated from the conveyance path surface. Then, the bogie is inserted into the body to be conveyed in such a manner that the front portion of the bogie is supported by the auxiliary wheel device on the inner surface of the body to be conveyed. At this time, the front wheel device does not come into contact with the inner surface of the pipe to be transported, and the inner surface of the pipe to be transported is not damaged because the auxiliary wheel device is made of rubber.

When the front portion of the bogie including the front wheel device exits the pipe to be conveyed, the front wheel device protrudes to a position where the front wheel device abuts on the transport route surface, and the front portion of the bogie is moved relative to the transport route surface. The auxiliary wheel device is stored while being supported by the front wheel device. In addition, the truss device is extended to push up the pipe to be transported from the inner surface side, and lift the pipe to be transported from the transport path surface. Further, in a holding state in which the tube to be transferred is supported on the transfer surface by the truss device, the trolley, and the front and rear wheel devices, the tube is transferred to the already installed and installed tube.

Then, the auxiliary wheel device is lowered to a position where it comes into contact with the inner surface of the existing pipe, and the front wheel device is stored in a retracted position separated from the transport path surface. Further, the bogie is pushed forward in such a manner that the front part of the bogie is supported by the auxiliary wheel device with respect to the inner surface of the existing pipe body, and the existing pipe body and the pipe to be conveyed are abutted.

Then, the truss device is contracted to release the holding state of the pipe to be transported, and the bogie is retracted and pulled out of the pipe to be transported. However, since the front wheel device is in the retracted state, it is hooked on the pipe to be transported. This does not hinder the movement of the carriage 1.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, a carriage 1 is a pipe 2 to be conveyed.
The auxiliary wheel device 3 is provided at the front end of the carriage 1. The auxiliary wheel device 3 has a rubber front wheel 4 and an elevating device 5 which moves back and forth between a position where the rubber front wheel 4 is in contact with the inner surface of the tube 2 to be conveyed and a position where it is separated.

A front wheel device 6 is provided at a front portion of the bogie 1. The front wheel device 6 is provided so as to be swingable between a position where it comes into contact with the transport path surface 7 and a position where it is separated. 8 and a cylinder device 9 for driving the front wheels 8 to move back and forth in the swinging direction. Further, a rear wheel device 11 having a rear wheel 10 is fixedly provided at a rear portion of the carriage 1.

A truss device 12 is provided above the carriage 1.
The truss device 12 includes a pair of left and right trusses 13 provided to extend and contract between a position in contact with the inner surface of the pipe 2 to be conveyed and a position apart from the truss 13, and a cord 14 for extending the truss 13. And a tightening machine 15. Further, the truss 13 joins the plurality of joints 13a in a freely bendable manner, supports both ends of the truss 13 in a freely rotatable manner, and interlocks the left and right trusses 13 via a connecting member 16 covered with a rubber material or the like. It is connected to.

The operation of the above configuration will be described below.
When the cart 1 is inserted into the pipe 2 to be conveyed, the auxiliary wheel device 3 is driven to lower the auxiliary wheel 4 to a position where it comes into contact with the inner surface of the pipe, and the cylinder device 9 of the front wheel device 6 is driven. Then, the front wheels 8 are stored in a retracted position separated from the transport path surface 7.

Then, the truck 1 is inserted into the tube 2 to be transported in such a manner that the front part of the truck 1 is supported by the auxiliary wheels 4 on the inner surface of the tube 2 to be transported. At this time, the front wheel 8 does not come into contact with the inner surface of the pipe 2 to be transported, and the auxiliary wheel 4 is made of rubber, so that the inner surface of the pipe 2 to be transported is not damaged.

Then, as shown in FIG.
At the time when the front part of the carriage 1 including the vehicle exits the pipe 2 to be conveyed, the cylinder device 9 of the front wheel device 6 is driven to drive the front wheel 8
Is protruded to a position where it comes into contact with the transport path surface 7, the front portion of the carriage 1 is supported by the front wheels 8 with respect to the transport path surface 7, and the auxiliary wheel device 3 is driven to store the auxiliary wheels 4.
In addition, the tightening machine 15 of the truss device 12 is driven to
And the truss 13 is extended to push up the pipe 2 to be conveyed from the inner side via the connecting member 16, and the conveying path surface 7
Is lifted from the pipe 2 to be transported.

Then, as shown in FIG. 4, the pipe 2 to be conveyed is connected to the truss device 12, the carriage 1, and the front and rear wheel devices 6,11.
In the holding state supported on the transport path surface 7 by the above, the pipe is transported to the existing pipe 17 already transported and installed.
In addition, the auxiliary wheel device 5 is driven to lower the auxiliary wheel 4 to a position where it comes into contact with the inner surface of the existing pipe 17, and the cylinder device 9 of the front wheel device 6 is driven to move the front wheel 8 from the transport path surface 7. Store it in the separated evacuation position. Further, the bogie 1 is pushed forward in such a manner that the front part of the bogie 1 is supported by the auxiliary wheels 4 against the inner surface of the existing pipe 17, and the existing pipe 17 and the pipe 2 to be conveyed are abutted.

Then, as shown in FIG.
A pipe bearing member 18 such as a square member is interposed between the truss 13 and the transport path surface 7, and the tightening machine 15 is driven to loosen the rope body 14 so that the truss 13 is contracted.
The holding state of 3 is released, and the centering of the transfer target pipe 2 is performed. Further, a hook 20 provided at one end of the joining wire rope 19 is hung on the end of the pipe 2 to be conveyed, and the retractor 21 is driven to restrain the pipe 2 to be conveyed. In this state, the trolley 1 is retracted and pulled out from the transfer target pipe 2. At this time, since the front wheel device 8 is in the retracted state, the movement of the carriage 1 is not hindered by being hooked on the pipe 2 to be conveyed.

Then, the drawing-in machine 21 is driven to draw the pipe 2 to be transported further into the existing pipe body 17 to join the pipe joints.

[0019]

As described above, according to the present invention, when the bogie is inserted, the front portion of the bogie is supported by the auxiliary wheel device with respect to the inner surface of the pipe to be conveyed. Without damage, the truss device is contracted to release the holding state of the pipe to be transported, and the bogie is retracted with the front wheel device retracted to pull out the bogie from the pipe to be transported. It can be carried out.

[Brief description of the drawings]

FIG. 1 is an overall front view of an insertion type tube carrier showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view in FIG.

FIG. 3 is a view showing the operation of the insertion type tube carrier in the embodiment.

FIG. 4 is a view showing the operation of the insertion type tube carrier in the embodiment.

FIG. 5 is a view showing the operation of the insertion type tube carrier in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cart 2 Conveying pipe 3 Auxiliary wheel device 6 Front wheel device 12 Truss device

Claims (1)

(57) [Claims] 1. A truck having a shape that can be inserted into and removed from a tube to be conveyed, and a rubber auxiliary wheel that is provided at a front end of the truck and moves back and forth between a position in contact with an inner surface of the tube to be conveyed and a position separated from the tube. A device, a front wheel device that is provided at a front portion of the truck and moves out and back between a position abutting on the transport path surface and a position separated from the transport route surface, a rear wheel device fixed to the truck,
And a truss device provided in the
The position that comes into contact with the inner surface of the target tube and the position that separates
And a pair of left and right truss
Connect the truss interlockingly and make sure that the pipe to be transported is on the inner side.
And a connecting member for pushing up .