JPH07127382A - Piping device for small-sized pipe jacking machine - Google Patents

Abstract

PURPOSE:To make it possible to carry out welding work in a short time and with higher efficiency when adding a smallsized pipe. CONSTITUTION:In a small-sized pipe jacking machine which jacks underground a small-sized pipe 2 mounted with a lead pipe at the tip with a jacking device 3 installed into a launching shaft 4 and brings out earth and sand excavated with a cutter head 1a installed to the tip of the lead pipe 1 by means of a screw conveyer 5, the screw conveyer 5 is divided for every unit length of the small-sized pipe 2, and what if more, the both ends of a pipe 6 or the like installed along the outer peripheral surface of a casing 5a is connected to joints 7 of the casing 5a which is automatically connected when connecting the casing 5a. A pipe 17 or the like from a control unit 16 is connected to the jacking device 3. What is more, there is installed a connection block 15 which can be freely connected to the rear end of the casing 5a by means of a drive means. When the casing 5a is connected, the connection of the pipe 6 or the like is also ended, which makes it possible to connect small-sized pipes in a short time and with higher efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe apparatus for a small-diameter pipe propulsion device, which facilitates connection work of small-diameter pipes.

[0002]

2. Description of the Related Art Conventionally, in a small-diameter pipe propelling machine for burying a small-diameter pipe in the ground, a screw conveyor for carrying out earth and sand excavated by a cutter head to the rear is divided for each unit length of the small-diameter pipe. , A screw conveyor is connected when adding small diameter pipes.

Pipes such as hoses and electric cables for supplying hydraulic pressure and air to the tip conduit attached to the tip of the small diameter pipe are also divided into unit lengths of the small diameter pipe. As shown, a joint b such as a quick coupler with a check valve is provided at the end of each pipe a, and after connecting the screw d and the casing e of the screw conveyor c, the pipes are connected by the joint b.

Further, the piping a on the starting shaft side is connected to the small-diameter pipe f and then drawn out to the back side of the pushing plate g as shown in FIG. 2 and pulled so as not to cause slack in the small-diameter pipe f.
It is connected to the piping from the control unit.

[0005]

However, since the number of the above-mentioned pipes a is large, the method of manually connecting these pipes every time the small-diameter pipes f are added requires a lot of work for connecting the small-diameter pipes f. There is a problem that the manpower is required and the work efficiency is poor.

Further, the pipes a drawn to the back side of the push plate g
However, when measuring the position of the pipe ahead of the starting shaft using the laser transit, the position of the pipe cannot be measured because it interferes with the laser beam or the slack is removed.
There was also a problem that the pipe a was caught on the casing e when it was pulled, and it was rubbed and was worn early. The present invention has been made in order to improve such conventional problems, and an object of the present invention is to provide a piping device for a small diameter pipe propulsion device, which facilitates connection work of small diameter pipes.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a small-diameter tube having a tip conduit attached to its tip,
In the small-diameter pipe propulsion device, which is propelled into the ground by the propulsion device installed in the starting shaft, and the cutter head provided at the tip of the leading conduit conveys the earth and sand excavated by the screw conveyor, the screw conveyor Is divided for each unit length of the small diameter pipe, and both ends of the pipes laid along the outer peripheral surface of the casing are respectively connected to joints that are automatically connected when the casing is connected, and to the propulsion device, Pipings from the control unit are connected, and a connecting block which is connectable to the rear end of the casing by a driving means is provided.

[0008]

When the casing of the screw conveyor is connected with the above structure, the pipes can be automatically connected by the joints, so that the small diameter pipe can be connected efficiently in a short time.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings shown in FIG. FIG. 3 shows a small-diameter pipe propulsion machine. In this figure, 1 is a front conduit attached to the tip of a small-diameter pipe 2 to be buried, 3 is a propulsion device installed in a starting shaft 4,
Reference numeral 5 denotes a screw conveyor that carries out the earth and sand excavated by the cutter head 1a provided at the front portion of the front conduit 1 to the rear, and includes a casing 5a and a screw 5b divided into unit lengths of the small diameter pipe 2.

The casing 5a has a flange 5c at its end as shown in FIGS.
Among the pipes 6 laid along the outer peripheral surface of a, a pipe 6a through which hydraulic pressure or air passes passes through the flange 5c, and a joint 7 made of a quick coupler with a check valve provided on the connection surface 5d of the flange 5c. It is connected to the.

The joint 7 is a male joint 7a as shown in FIG.
And a female joint 7b, so that when the casing 5a is connected, it can be automatically connected,
The cable 6b laid along the outer peripheral surface of the casing 5a shown in FIG. 5 is provided with a connector 8 at its end, and the cable 6b is connected by the connector 8.
4 and 5, 9 is a flange 5 of each casing 5a.
The fastener which connects between c is shown.

On the other hand, the propulsion device 3 installed in the starting shaft 4
Is provided with a screw 5b of the screw conveyor 5 and a drive device 12 for rotating the cutter head 1a connected to the tip of the screw 5b.

Further, in front of the drive unit 12, there is provided a pushing plate 3a which is advanced by the propelling cylinder 13, and the pushing plate 3a propels the small-diameter pipe 2 into the ground, and at the same time, the pushing plate 3a is provided. As shown in FIG. 6, a through hole 3b through which the rear end of the casing 5a is inserted is opened. The rear end of the casing 5a inserted through the through hole 3b is connected to the connecting member 14. The connection member 14 has the same joint 7 as the joint 7 provided on the end surface of the casing 5a, and the connection cylinder 15 provided on the drive device 12 presses the connection member 14 against the end surface of the casing 5a to thereby form a joint. 7 is automatically connected.

The pipes 17 from the control unit 16 are connected to the upper surface of the connecting member 14, and the pipes 6 laid in the casing 5a communicate with each other by the connection of the joint 7. It has become so.

The operation will now be described. A small-diameter pipe 2 having a tip conduit 1 attached to the tip thereof is propelled into the ground by a propulsion device 3 in a starting shaft 4, and the earth and sand excavated by the cutter head 1a is screwed by a screw conveyor 5. Is carried out to the rear. When the unit length of the small-diameter pipe 2 is completed, the push plate 3a is retracted, and the small-diameter pipe 2 to be embedded next is carried between the already-embedded small-diameter pipe 2 and the push plate 3a, and the screw is pushed. The screw 5b of the conveyor 5 and the casing 5a are connected to each other. When the casing 5a is connected, the pipes 6 are automatically connected by the joint 7, so that the connecting work of the pipes 6 becomes unnecessary.

When the connection of the screw conveyor 6 is completed as described above, the pressing plate 3a is brought into contact with the rear end of the small diameter tube 2 until the tip surface of the small diameter tube 2 hits the rear end surface of the already inserted small diameter tube. Since the connecting block 14 is moved forward by the advanced connecting cylinder 15 and the pushing plate 3a connected to the rear end of the casing 5a is brought into contact with the rear end of the small diameter pipe 2, the propulsion of the small diameter pipe 2 is started again. Since the connecting work of the pipes 6 is not required when connecting the small diameter pipe 2, the connecting work of the small diameter pipe 2 can be efficiently performed in a short time.

[0017]

As described above in detail, according to the present invention, when the screw conveyor is connected when the small diameter pipe is replenished, the pipes are automatically connected by the joint provided on the end face of the casing. There is no need to connect piping for work. As a result, the connection work of the small diameter pipe can be done efficiently in a short time, and the piping from the control unit and the pipes inside the small diameter pipe are connected by the connection block. It is possible to solve the problem that the pipes pulled out to the position hinder the position measurement of the leading conduit. Further, since it is not necessary to pull out the slack pipes from the inside of the small-diameter pipe, the pipes are not prematurely worn.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a conventional method for connecting pipes.

FIG. 2 is an explanatory diagram showing a conventional piping connection method.

FIG. 3 is a configuration diagram of a small-diameter pipe propulsion device that employs a piping device according to an embodiment of the present invention.

FIG. 4 is a side view of a piping device according to an embodiment of the present invention.

FIG. 5 is a perspective view of a piping device according to an embodiment of the present invention.

FIG. 6 is an enlarged view of a circle A in FIG.

[Explanation of symbols]

 1 Leading Conduit 1a Cutter Head 2 Small Diameter Pipe 3 Propulsion Device 4 Starting Shaft 5 Screw Conveyor 5a Casing 5b Screw 6 Pipes 7 Joint 15 Connection Block 16 Control Unit 17 Pipes

Claims (1)

[Claims] 1. A small-diameter tube 2 having a tip conduit 1 attached to its tip.
Is propelled into the ground by the propulsion device 3 installed in the starting shaft 4 and the cutter head 1a provided at the tip of the leading conduit 1 carries out the earth and sand excavated by the screw conveyor 5 with a small diameter pipe. In the propulsion device, the screw conveyor 5 is divided into unit lengths of the small diameter pipe 2, and pipes 6 are laid along the outer peripheral surface of the casing 5a.
Both ends of each are connected to a joint 7 that is automatically connected when the casing 5a is connected, and the propulsion device 3 is connected to the pipes from the control unit 16 and connected to the rear end of the casing 5a by a driving means. A piping device for a small diameter pipe propulsion machine provided with a flexible connection block 15.