JPH08246791A - Coupling device for transport pipe in pipe body embedding jacking method - Google Patents

Abstract

PURPOSE: To smoothly perform the connection and separation of transport pipes themselves housed in a transmission pipe by making this transmission pipe to feed a boring machine with pressure oil or the like be inserted into a burying pipe body. CONSTITUTION: A burying pipe body is driven forward in succession to the rearward of a boring machine driving from a starting shaft, while a transport pipe 4 to feed the boring machine with pressure oil and water or the like is housed in the inner part. A transmission pipe 5 with length corresponding to the burying pipe body is inserted into the burying pipe body, and a base end and a connecting part of each transmission pipe 5 to be situated at the front side are connected together by an operation from the side of the starting shaft. With the transmission pipes 5 connected, respective joint members 8 and 10 at both male and female sides installed in a front end plate 11 and a rear end plate 13 are watertightly fitted in with each other, and thereby valve elements 6 and 7 at booth male and female sides are made to contact with each other, thereby opening both valve holes 9 and 19 against both springs 12 and 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission pipe in a propulsion method for embedding a pipe body, which is used in the case of propulsively embedding a pipe body for waterworks, a sheath pipe for cables, a sewer pipe and other pipes for various purposes. Regarding the coupling device.

[0002]

2. Description of the Related Art In general, when the above-mentioned various pipes are buried in the ground by a shield method using an excavator, the starting shaft and the reaching shaft of the excavator are generally excavated, and the reaching shaft is reached from the starting shaft. The method of propelling the excavator toward the base and propelling and embedding the pipe body in the lateral hole formed after the excavator propels.

In the above pipe burying method, a steel guide for supplying pressure oil for driving and water for excavation to the excavator, or for supplying air to an airbag for adjusting the propulsion direction of the excavator. Although a method of burying a pipe has been conventionally used, this guide pipe is a so-called two-step system in which it is buried separately from the burying of the burying pipe body.

To explain with reference to FIGS. 16 to 18, a row of guide pipes 16 is formed in the rear portion of the excavator 2 propelled from the starting shaft 1 to the reaching shaft 15, and a plurality of guide pipes 16 are arranged in the guide pipes 16. Pressure oil for driving, water for excavation, and the like are supplied to the excavator 2 from the side of the starting shaft 1 via a transport pipe (not shown). When the excavator 2 reaches the reaching shaft 15 as shown in FIG. 18, the guiding pipe 16 exists from the starting shaft 1 to the reaching shaft 15.

Subsequently, as shown in FIG. 17, the pipes 3 for burying are propelled from the starting shaft 1 one by one, and the guide pipe 16 is pushed by the pipe 3 and pushed out to the reaching shaft 15 with it. Then, it is collected in the reaching shaft 15.

In the above-mentioned conventional method, one of the 16 rows of the guiding pipes extending from the reaching shaft 15 to the starting shaft 1 is recovered from the one on the reaching shaft 15 side, and the burying pipe body 3 is propelled on the other side. This is a two-step method, and therefore there is a drawback that the burying work of the pipe body takes time and effort.

Therefore, the inventor of the present application filed in another application of the same date as FIG.
4. A propulsion method for a buried pipe body of a one-step system as shown in FIG. 15 was proposed. Explaining each figure, at the same time that the excavator 2 is propelled from the starting shaft 1, the pipe 3 for burying is sequentially propelled to the rear side of the excavator 2 to bury the pipe 3 and propel the excavator 2. At the same time, the excavator 2 reaches the shaft 15
When it reaches, the buried row of the burying pipes 3 from the starting shaft 1 to the reaching shaft 15 is constructed.

[0008]

In the above-mentioned method, a guide pipe for supplying pressure oil for driving or water for excavation to the excavator 2 moving forward at the front end of the burying pipe body 3 (main In the invention, a transmission pipe) is required. Therefore, the applicant of the present invention, when propelling the burying pipe 3 into the ground, simultaneously inserts the transmission pipe 5 into the starting shaft 1 corresponding to each one burying pipe 3, A method has been proposed in which the pressure oil for driving supplies water from the starting shaft 1 side to the excavator 2 via the transmission pipe 5.

By the way, a large number of transportation pipes 4 for supplying the pressure oil with water are housed inside the transmission pipe 5, and when the transmission pipes 5 are connected, the transportation pipes inside the transmission pipe 5 are connected. Since the pressure oil and the high-pressure water flow through the inside of the transmission pipes 4, the pipe ends of the transportation pipes 4 are closed while the transmission pipes 5 are separated from each other. If the pipe ends of the transport pipe 4 are surely connected to each other when the pipes are connected and the insides of the pipes communicate with each other, the connection and separation work of the transmission pipe 5 described above can be smoothly performed. There was no such means.

It is an object of the present invention to provide a connecting device for a transportation pipe in a propulsion method for burying a pipe, which solves the above problems.

[0011]

In order to achieve the above object, the transport pipe connecting device in the pipe burying propulsion method of the present invention is continuously buried at the rear side of the excavator 2 propelled from the starting shaft 1. A plurality of transport pipes 4 for propelling the pipe body 3 for supplying pressure oil, water, etc. to the machine 2 are housed therein, and have a length corresponding to that of the burying pipe body 3. Inserting the transmission pipe 5 into the burying pipe body 3 and operating the starting shaft 1 to connect the base end portion and the connecting portion of each of the transmission pipes 5 located on the front side thereof to burying the pipe body. An apparatus for carrying out the method, wherein a male side joint member 8 and a female side joint member 10 which are provided at both ends of the transportation pipe 4 and have valve bodies 6 and 7 for automatic opening and closing, respectively, are provided at a front end of the transmission pipe 5. Since the plate 11 and the rear end plate 13 are provided so as to penetrate therethrough, the transmission pipes 5 are connected to each other. , The male and female joint members 8 and 10 are fitted in a watertight manner, and the male and female valve elements 6 and 7 are in contact with each other to resist the springs 12 and 14 and the valve holes 9 and 19. It is characterized by the structure of opening a hole.

[0012]

Operation As the burying pipe body 3 is sequentially propelled along with the advance of the excavator 2, the transmission pipes 5 accommodating the transport pipes 4 for supplying the pressure oil, water and the like to the excavator 2 are provided. The transmission pipes 5 are connected to each other by being inserted into the burying pipe body 3.
According to the configuration of the present invention, the transport pipes 4 are automatically connected to each other in accordance with the connecting operation of the transfer pipes 5, and the connecting portions of the transfer pipes 5 are separated at the end of the burying work of the pipe body 3. At this time, the valve holes 9 and 19 of the male and female joint members 8 and 10 at the pipe end of the transport pipe 4 are automatically closed, and the fluid in the transport pipe 4 leaks from the pipe end. There is no.

[0013]

Embodiments of the present invention will now be described with reference to the drawings. First, the outline of the present embodiment will be described with reference to FIGS. 12 and 13. In each of the drawings, the lower part of the starting vertical shaft 1 made of steel pipe is shown in a longitudinal side view, and the lower part of the vertical shaft 1 has a first hydraulic jack ( A state in which a tube propulsion device 20 including a center jack) 18 and a second hydraulic jack (not shown in the figure) is provided is shown. This tubular body propulsion device 20 is substantially the same as the technique disclosed in Japanese Patent Publication No. 6-52036, which is a prior application of the present applicant.

That is, the excavator 2 has the first hydraulic jack 18
In the pre-stage of installation, the reaction force is exerted on the second hydraulic jack or a jack (not shown) to propel it from the opening 21 of the vertical shaft 1. Next, the first hydraulic jack 18 is installed in the vertical shaft 1 to propel the burying pipe body 3. 1st hydraulic jack 1
Reference numeral 8 is provided with a columnar support 24 capable of undulating and pivoting between a position that is erected obliquely upward with respect to the support shaft 23 supported by a bracket 39 and a horizontally laid position. In a state in which 24 is erected in an inclined state, the buried pipe body 3 suspended from above in the shaft 1 and fitted therein is fitted, and then this cylindrical support body 24 is on the front side (left side in the figure).
It is supported by the columnar support 24 by rotating the columnar support 24 forwardly by moving the first hydraulic jack (center jack) 18 by driving the first hydraulic jack (center jack) 18 in this state. The tubular body 3 for burying is propelled. Fitting of the burying pipe 3 into the columnar support 24 in the upright state of the columnar support 24 that undulates in this manner, and burying pipe 3 in the state of the columnar support 24 lying sideways. By repeating the propulsion operation of (1), the burying propulsion of the pipe body 3 is performed in the rear lateral hole to which the excavator 2 has advanced.

Next, after the first burying pipe body 3 is propelled until it comes into contact with the rear end of the excavator 2 by the work in the vertical shaft 1, the first burying pipe body 3 is moved into the first pipe body 3 within the first burying pipe body 3. Insert the first transmission tube 5. As shown in FIG. 2, a plurality of transport pipes 4 are housed inside the transmission pipes 5. By connecting the transmission pipes 5, the transport pipes 4 in the respective transmission pipes 5 are connected to each other. The excavator 2 is connected to form a transportation route.
Moreover, it is possible to supply and carry out pressure oil, air, water, etc. necessary for the smooth excavation operation.

The present embodiment is characterized by the structure in which the transport pipes 5 housed in the transmission pipes 5 can be automatically coupled with each other as the transmission pipes 5 are coupled. The transmission pipe 5 is configured by closing both ends of a cylindrical wall 25 having an open portion 26 at the upper end with a front end plate 11 and a rear end plate 13, and a plurality of transport pipes are provided in the cylindrical wall 25. 4 is accommodated with or without a pipe joint 28 in the middle thereof, and a pipe end portion 27 of each transport pipe 4 is opened to the front end plate 11 and the rear end plate 13. The outer diameter of the transmission pipe 5 is slightly smaller than the inner diameter of the burying pipe body 3, and
The length thereof is provided to be substantially the same as that of the tubular body 3, and further, a positioning projection 30 is provided at the center of the rear end plate 13, and the other transmission for connecting the projections 30 to each other. By fitting in the alignment recess 29 formed in the center of the front end plate 11 of the pipe 5, the two transmission pipes 5 connected to the front and rear can be easily and accurately aligned.

By connecting the front and rear transmission pipes 5 as described above, the pipe ends 27 of the plurality of transport pipes 4 accommodated in each transmission pipe 5 are automatically connected. This automatic coupling joint device will be described with reference to FIGS. 7 to 9. The rear end plate 13 of the transmission pipe 5 is provided with the cylindrical body portion 31 of the male side joint member 8 connected to the pipe end portion 27. The front end plate 11 of the pipe 5 is provided with a cylindrical body portion 43 of the female joint member 10 connected to the pipe end portion 27.

The cylindrical portion 31 of the male joint member 8 is the rear end plate 13.
Is fitted into the hole 32 of the rear end plate 13
Is applied to the notch step portion 34 of the
It is fixed to the rear end plate 13 by a pressing plate 36 fixed to the rear end plate 13 at 5. The front portion 31a of the cylindrical body portion 31
Is projected from the rear end plate 13, and a male screw portion 38 at the tip of the transport pipe (in particular, a pipe for feeding pressure oil) 4 is formed inside the transmission pipe 5 at the female screw portion 37 at the rear inner circumference of the cylindrical portion 31. Are screwed together.

A tubular guide 40 is provided at the center of the tubular portion 31, and the outer end edges of a plurality of radially arranged support plates 41 having inner ends fixed to the tubular guide 40 are attached to the tubular portion. 31
The tubular guide 40 is held at the center of the tubular body portion 31 by being fixed to the inner peripheral surface of the tubular body portion 31. A guide shaft 43 provided at the rear end of the valve body 6 for opening and closing the valve hole 9 at the front end of the cylindrical body portion 31 is inserted into the tubular guide 40 via a packing 42, and is connected to the rear portion of the valve body 6. A spring 12 is provided by locking the end portion to the end edge of the support plate 41, and the elastic force of the spring 12 causes the valve body 6 to move forward to close the valve hole 9. .

The female side joint member 10 is almost the same as the above, and the cylindrical body portion 43 is fitted in the hole 44 of the front end plate 11,
The flange 45 is applied to the notch step portion 46 of the front end plate 11, and the flange 45 is fixed to the front end plate 11 by a pressing plate 48 fixed to the front end plate 11 with a fixing screw 47. The end edge of the cylindrical body portion 43 is provided on the same surface as the pressing plate 48 of the front end plate 11, and the female screw portion 50 on the rear inner circumference of the cylindrical body portion 43 has the male screw portion 51 of the transport pipe 4. Are screwed together.

A tubular guide 52 is provided at the center of the tubular portion 43, and the outer end edges of a plurality of radially arranged support plates 53, to which the inner ends of the tubular guide 52 are fixed, are attached to the tubular portion. 43
The tubular guide 52 is held at the center of the tubular body portion 43 by being fixed to the inner peripheral surface of the. The tubular guide 52 has a valve body 7 for opening and closing the valve hole 19 located at a position deeper than the leading edge of the tubular body portion 43 through a packing 54.
A guide shaft 55 provided at the rear end of the valve body 7 is inserted, and a spring 14 is provided by locking the end portion between the rear portion of the valve body 7 and the support plate 53. The valve body 7 is configured to move forward to close the valve hole 19.

According to the above automatic joint connecting structure, when the front and rear transmission pipes 5 are separated and the transportation pipe 4 is divided accordingly, as shown in FIG. 7, the male side joint member 8 and the female side joint member are formed. In FIG. 10, the valve elements 6 and 7 move forward by the elastic force of the springs 12 and 14 to close the valve holes 9 and 19, so that pressure oil or the like does not leak from the pipe end 20 of the transport pipe 4. On the other hand, when the transport pipe 4 is coupled with the coupling of the front and rear transmission pipes 5, the front portion 31 a of the cylindrical body portion 31 of the male side joint member 8 is the front cylinder of the cylindrical body portion 43 of the female side joint member 10. It is inserted into the inside 56 and is watertightly fitted to each other via the packing 57, and the valve bodies 6 and 7 on the male and female sides collide with each other to retreat against the springs 12 and 14 to form a valve hole. Open 9,19. As a result, the insides of the male and female side joint members 8 and 10 communicate with each other, and the pressure oil and the like can flow without leaking.

Further, since the pressure oil, the air, the water, etc. are circulated in each of the transport pipes 4 of the transmission pipe 5, each transport pipe 4 has a structure as shown in FIG.
It is connected to each supply source via the cylindrical support 24 of the first hydraulic jack 18 which is one of the constituent elements of the pipe propulsion device 20 shown in FIG. The inside of 24 is configured as follows. FIG.
0, FIG. 11 will be described. The first hydraulic jack 18 has an intermediate portion of the cylindrical support 24, that is, the arc-shaped wall 6.
1, the cylinder 58 thereof is of a double type, and two piston rods 60 are provided in parallel inside thereof, and the tip end of the piston rod 60 has a cylindrical support 24. It is locked and fixed to an abutting plate 62 provided inside the inner portion near the tip. The reinforcing plate 63 is in contact with the contact plate 62.
Is provided, and a space 65 is formed between the reinforcing plate 63 and the end plate 64.

In the arcuate wall 61 facing each other, a space 66 formed between this wall body and the first hydraulic jack 18.
In addition, a plurality of transportation pipes corresponding to the plurality of transportation pipes 4 in the transmission pipe 5 (a part of which is illustrated and described in FIG. 10).
67 is provided, and the leading end portion of the transport pipe 67 is introduced into the space portion 65 through the opening 68 formed in the contact plate 62 and the reinforcing plate 63. After the length of the extra length of the transport pipe 67 is adjusted by winding several times, the pipe end portion 70 of each transport pipe 67 is inserted into each hole 71 of the end plate 64.

The pipe end portion 70 of each of the transport pipes 4 exposed on the front surface of the end plate 64 corresponds to the pipe end portion 27 of the rear portion of the transport pipe 4 arranged on the rear end plate 13 of each transmission pipe 5. It is arranged at the position where Therefore, by applying the front end of the columnar support 24 to the rear end of the transmission pipe 5, the columnar support 24
The inner transport pipe 67 and the transport pipe 4 in the rearmost transfer pipe 5 of the transfer pipe row can be connected. In addition, the cylindrical support 2
The base end of each transportation pipe 67 in 4 communicates with a hole 73 formed in the thick wall of the rear end plate 72, and each of the transportation pipes 67 has a pump 73 for pressure oil. A water supply pump, a mud storage tank, an air compressor, etc. are connected.

[0026]

As described above, according to the present invention, the digging machine 2 is smoothly driven when burying the burying pipe body 3 behind the digging machine 2 propelling in the ground while sequentially propelling it. Therefore, a transmission pipe 5 accommodating a transport pipe 4 for forming a transport system path for supplying and unloading pressure oil, water, air, etc. to and from the machine 2 is inserted into and removed from the burying pipe body, and accordingly, Along with the operation of connecting and separating the transmission pipes 5 from each other, the connection and separation of the transportation pipes 4 housed in the transmission pipes 5 are automatically performed through the male and female joint members 8 and 10. The valve holes 6 and 7 can be automatically opened and closed by the valve bodies 6 and 7 accordingly, which has an excellent effect that the transport pipe 4 can be easily separated and connected.

[Brief description of drawings]

FIG. 1 is a plan view of a transmission pipe according to an embodiment.

2 is a front view of the transmission pipe of FIG. 1. FIG.

3 is a left side view of the transmission pipe of FIG. 1. FIG.

FIG. 4 is a right side view of the transmission pipe inserted into the pipe body.

FIG. 5 is a partial cross-sectional explanatory view showing a state during operation of the transport pipe connecting device.

FIG. 6 is a partial cross-sectional explanatory view showing a connected state of the transport pipe connecting device.

FIG. 7 is an enlarged cross-sectional view when separating the male and female joint members.

FIG. 8 is an enlarged cross-sectional view at the time of connecting the male and female joint members.

9 is a cross-sectional view taken along the line AA of FIG.

FIG. 10 is a vertical cross-sectional explanatory view of a columnar support.

11 is a cross-sectional view taken along the line BB of FIG.

FIG. 12 is a vertical cross-sectional side view of the tubular propulsion device during a first operation.

FIG. 13 is a vertical cross-sectional side view of the tubular propulsion device during a second operation.

FIG. 14 is a cross-sectional explanatory view showing a state in which the pipe body is buried by the device of the embodiment and the excavator reaches the reaching shaft.

FIG. 15 is an explanatory cross-sectional view of a state in which a transmission pipe is extracted from the pipe body.

FIG. 16 is a cross-sectional explanatory view showing the first step of the conventional method, in which the excavator reaches the reaching shaft and the guide pipe is buried.

FIG. 17 is a cross-sectional explanatory view in the middle of recovering the conventional guide tube to the reaching shaft side.

FIG. 18 is a cross-sectional explanatory view showing a state in which the conventional guide tube has been recovered and all tube bodies are buried.

[Explanation of symbols]

 1 Starting shaft 2 Excavator 3 Buried pipe 4 Transport pipe 5 Transmission pipe 6 Valve body 7 Valve body 8 Male side joint member 9 Valve hole 10 Female side joint member 11 Front end plate 12 Spring 13 Rear end plate 14 Spring 15 Arrival vertical shaft 16 Guide pipe 18 1st hydraulic jack (center jack) 19 Valve hole 20 Pipe propulsion device 22 Elevating hydraulic cylinder 23 Support shaft 24 Cylindrical support 25 Cylindrical wall 26 Opening portion 27 Pipe end portion 28 Pipe joint 29 Recessed portion 30 Positioning Protrusion 31 Cylindrical Body Part 32 Hole 33 Collar Edge 34 Notch Step Part 35 Fixing Screw 36 Pressing Plate 37 Female Thread Part 38 Male Screw Part 40 Cylindrical Guide 41 Support Plate 42 Packing 43 Guide Shaft 44 Hole 45 Collar Edge 46 Cut Notched step portion 47 Fixing screw 48 Pressing plate 50 Female screw portion 51 Male screw portion 52 Cylindrical guide 53 Support plate 54 Packing 55 Guide shaft 5 Front tube interior 57 packing 58 cylinder 60 piston rod 61 arcuate wall 62 abutting plate 63 reinforcing plate 64 end plate 65 space 66 space 67 transport tube 68 opening 70 tube end 71 hole 72 rear end plate 73 connecting holes

Claims (1)

[Claims] 1. A transportation pipe 4 for continuously propelling a burying pipe body 3 to the rear side of an excavator 2 propelled from a start shaft 1 and supplying pressure oil, water or the like to the excavator 2. A plurality of transmission pipes 5 housed inside and having a length corresponding to the burying pipe body 3 are inserted into the burying pipe body 3, and a base end portion is operated by an operation from the starting shaft 1 side. A device for carrying out a tube-embedding propulsion method in which connecting portions of the respective transmission tubes 5 located on the front side thereof are connected to each other. The male side joint member 8 and the female side joint member 10 having the front end plate 11 of the transmission pipe 5 are provided.
And the rear end plate 13 are provided so as to penetrate through the rear end plate 13 and the transmission pipes 5 are connected to each other so that the male and female joint members 8 and 10 fit in a watertight manner and the male side. And a valve element 6, 7 on the female side abuts against each other to open the valve holes 9, 19 against the springs 12, 14.