JP2003155893A - Pipe jacking machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a universal pipe jacking machine which can be shared for various piping working such as laying working of new pipes, pulling working of unnecessary existing pipes and exchanging working of the existing pipes for the new pipes. SOLUTION: The pipe jacking machine uses a reciprocating cylinder 3 as a drive source and performs at least any two of pushing pipe jacking of a pipe body including a steel pipe used for a gas pipe or the like, a resin pipe, a boring rod and the like for forming a boring hole laying them, pulling pipe jacking of the pipe body and drawing pipe jacking of a wire connected to a pipe splitter cutting the existing resin pipe. A support plate 5 moving in parallel with advance and retreat of the reciprocating cylinder 3 is provided, and attaching holes 5c, 5d, 5e and 5f for exchangeably detachably mounting an excavation device for forming the boring hole on the support plate 5 and a clamp device for holding any one of the pipe body or a wire are formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion device used for laying or drawing steel pipes or resin pipes used as gas pipes or water pipes without cutting.

[0002]

2. Description of the Related Art Various piping work such as laying new pipes, pulling out existing pipes that are no longer needed and replacing existing pipes that are no longer needed with new pipes without cutting the ground over the working length When performing non-excavation, various devices are used according to the work.

For example, when laying a new pipe, first, an excavating device such as a screw auger is carried into the vertical shaft, and then a pilot hole for advancing the excavating rod is formed. Next, the unidirectional type propulsion machine whose propelling direction is unidirectional is replaced with the excavator, and the excavation rod applies a propulsive force in the pushing direction to drill the ground.

In addition, when pulling out an existing steel pipe that is no longer needed, the above-mentioned single-unit type propulsion unit may be used by arranging it in the reverse direction in order to obtain a propulsive force in the pulling direction.
Alternatively, a separate pulling propulsion unit is used.

If the existing pipe to be pulled out is not a steel pipe but a resin pipe, there is a problem that the propulsion machine as described above cannot be used as it is. The earth pressure applied to the resin pipe is larger than the pulling force of the propulsion unit, and the resin pipe may be broken in the middle due to the earth pressure and the pulling force, or even if it does not break, it may not be easily pulled out. Is. Therefore, when pulling out the existing resin pipe,
Introducing a propulsion device that exerts a stronger propulsion force (pulling force), or the applicant of the present invention disclosed in JP 2001-13287 A.
As proposed in Japanese Patent No. 0, a wire (load transfer linear body) is connected to a pipe splitter (existing resin pipe cutting device) that cuts the resin pipe into a strip shape from the inside of the pipe in the longitudinal direction, and It is necessary to apply a propulsive force in the pulling direction generated by winding with a winch to the pipe splitter to cut the existing resin pipe and collect the cut resin pipe.

[0006]

It is a lot of waste to review the conventional techniques that have been carried out up to this point. That is, even just by exemplifying the above, depending on the difference in material of the pipe body to be worked (difference between steel pipe and resin pipe) and the difference in propulsion mode (difference between push-in propulsion, pull-out propulsion, and pull-in propulsion), Different propulsion units (single-unit type propulsion units, propulsion units with different propulsion strengths, winches)
Is the reality. However, considering that the above-mentioned works are adjacent to each other as a work form of piping work and are performed together at one site, preparing and using different propulsion units is not only for transportation. However, there is a large loss in terms of installation work in the shaft and cost, but at present it is unavoidable to accept this.

The present invention has been made based on these findings. That is, it is an object of the present invention to provide a universal propulsion machine that can be commonly used for various piping works such as laying a new pipe, pulling out an unnecessary existing pipe, and replacing an existing pipe with a new pipe.

[0008]

In order to achieve the above object, the present invention is intended to form a steel pipe or a resin pipe used as a gas pipe or the like and a drilling hole for laying them by using a return cylinder as a drive source. The universal propulsion that performs at least two propulsion of the push-in propulsion of the pipe body including the excavating rod, the pull-out propulsion of the pipe body, and the pull-in propulsion of the load transmission linear body connected to the existing resin pipe cutting device. A machine is provided with a support plate that moves in parallel with the forward and backward movement of the return cylinder, and holds the excavation device that forms the excavation hole, and at least one of a tube body and a load transfer linear body on the support plate. (EN) Provided is a universal propulsion machine, in which a mounting portion for detachably attaching and detaching a clamp device is formed.

The reason why this universal propulsion machine is "universal" is
A support plate that moves in parallel with advancing and retreating of the return cylinder is provided, and an excavation device that forms the excavation hole in the support plate, and a clamp device that holds at least one of the pipe body and the load transfer linear body. The purpose of this is to form a mounting portion for exchangeable attachment and detachment. That is, since the excavator and the clamp device can be exchangeably attached to and detached from the support plate via the mounting portion, for example, when drilling a prepared hole of the excavation hole, a screw auger as the excavation device is used as the support plate. When the main hole of the excavation hole is to be subsequently drilled by attaching the clamp device to the support plate instead of the screw auger of the excavating rod, the work is performed. Further, in the above clamp device, not only the excavating rod but also other pipe bodies such as steel pipes and resin pipes used as gas pipes and the like, and also the load transfer linear body connected to the existing resin pipe cutting device can be held. Any of these push-in propulsion, pull-out propulsion, and further pull-in propulsion can be performed by the clamp device attached to the support plate. In any of the above-described operations, the support plate is driven by the return cylinder, so that the return cylinder can be used as a common drive source, and there is no waste.

Further, according to the present invention, the excavator and the clamp device are so arranged that the axis of the rod-shaped excavating blade of the excavator attached to the support plate and the axis of the pipe body and the load transfer linear body are aligned with each other. A universal propulsion machine having a mounting portion is provided.

According to this universal propulsion machine, it is not necessary to perform centering for each excavating device and clamp device to be mounted, and when installed, high-accuracy excavating and clamping of the pipe body and the load transfer linear body are performed immediately. It becomes possible.

Further, according to the present invention, the return cylinder and the support plate are attached to a frame-shaped base frame, and the pipe or the load transmission linear body is held in the base plate by a clamp device of the support plate in a direction crossing the axis. Provide a reinforced standing wall along
The reinforcing standing wall is provided with an escape portion for avoiding contact with the tubular body or the load transmission linear body.

According to this universal propulsion device, since the relief portion is provided in advance for avoiding contact with the tubular body or the load transfer linear body, when the universal propulsion device is used, it is exposed inside the aircraft. It is possible to perform work without worrying about the length of the tubular body or the load transmission linear body, and the universal propulsion machine or tubular body is not damaged.

Further, according to the present invention, a mounting portion for mounting and demounting a centering guide for positioning the propelling direction of the tubular body in a predetermined direction at the time of pushing and propelling the tubular body is further formed.

According to this universal propulsion machine, since the centering guide corrects the thrusting direction of the thrusting of the tubular body,
It is possible to press the pipe body accurately along the direction of promotion of the plan.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

A plan view of the universal propulsion machine 1 according to this embodiment is shown in FIG. The universal propulsion device 1 includes a return cylinder 3 hydraulically driven inside a rectangular base frame 2, a support plate 5 fixed to the return cylinder 3 via a bracket 4, and a support plate 5 And a guide plate 6 for guiding the movement. The base frame 2 has a length of 700 mm and a width of 315 m.
m, which is very small.

The base frame 2 has a pair of frame members 2a each having an L-shaped cross section and arranged along the longitudinal direction with each inner corner side facing the inside of the machine. The terminal plate 2b is welded (see FIG. 3). Side plates 2c having a substantially right triangle shape are welded to both outer sides of each frame member 2a to reinforce the base frame 2. A guide plate 6 for guiding the movement of the support plate 5 described above is fixed to the frame member 2a on the upper side in FIG. 1 among the frame members 2a. Each terminal plate 2b is formed with a relief portion 2d which is cut out in a U shape from the upper edge downward. Each side plate 2
A leg portion 2e for fixing the universal propulsion device 1 to a shaft wall or a support of a vertical shaft and obtaining a propulsion reaction force by the return cylinder 3 is provided at c. The leg portion 2e can adjust its protruding length along the longitudinal direction of the universal propulsion device 1.

The return cylinder 3 is fixed to the terminal plate 2b on the left side in FIG. Return cylinder 3
Drive rod 3b that moves back and forth with respect to the cylindrical body portion 3a of
The above-described bracket 4 is fixed to the tip portion 3c of the. The upwardly projecting portion 3d of the main body portion 3a is a connecting portion that is connected to a control device for the return cylinder 3 (not shown).

The support plate 5 has a flat plate shape as a whole, and is fixed to the bracket 4 at a position of the front end portion 5a thereof near the return cylinder 3.
Guide rollers 5b are attached to the support plate 5 at a total of six locations on the four corners and outside the center. Among the guide rollers 5, the three guide rollers 5b arranged side by side on the lower side in the drawing of FIG. 2 are, as shown in an enlarged manner in FIG. 2 and FIG.
It is designed to be inserted into the guide groove 2f formed in the lower frame material 2a in the figure and roll along the guide groove 2f. On the other hand, the three guide rollers 5b arranged side by side on the upper side in the drawing of FIG.
It is adapted to be inserted into a similar guide groove 6a formed in the guide plate 6 fixed to and to roll along the guide groove 6a. The guide grooves 2f, 6a
And are formed at the same height position and the same length.

Further, the support plate 5 has four mounting holes 5c penetratingly formed on the side of the front end portion 5a, and a clamp device 7 to be described later is mounted in the four mounting holes 5c. Two mounting holes 5d and 5e are formed in the vicinity of the center of the support plate 5 so as to penetrate therethrough.
Two mounting holes 5f are also formed through the rear end portion 5b side. As will be described later, the centering guide 8 is mounted in the mounting holes 5d and 5e, and the excavator 9 is mounted in the mounting holes 5d and 5f. Therefore, the mounting hole 5d is commonly used as a mounting location for both the centering guide 8 and the excavator 9. Welding nuts are fixed to the back surface of the support plate 5, which is not shown in the drawing, corresponding to the mounting holes 5c, 5d, 5e, and 5f.

Next, the basic operation of the universal propulsion machine 1 having the above-described schematic structure will be described with reference to FIG. In FIG. 5, the detailed configuration of the universal propulsion machine 1 is not shown for easy understanding.

The state shown in FIG. 5 (a) shows the same initial state as in FIG. 1, from which the drive rod 3b of the return cylinder 3 is hydraulically extended in the forward direction X. Then, the support plate 5 moves in the forward direction X in accordance with this extension operation. This movement is performed very smoothly by the six guide rollers 5b rolling inside the guide groove 2f of the frame member 2a and the guide groove 6a of the guide plate 6 to receive the guide as described above. And FIG.
When moving from the initial state of (a) until the front end 5a reaches the maximum extension state of FIG. 5 (b) where the terminal plate 2b is close, the drive rod 3b is moved in the backward direction Y which is the reverse direction. Hydraulically driven. Of course, also at this time, the guide roller 5
The guide formed by b and the guide grooves 2f and 6a functions.
The universal propulsion machine 1 functions based on the above operation.

Next, a more specific embodiment of the universal propulsion machine 1 will be described with reference to FIGS.

[0025]

[Embodiment 1] Embodiment 1 of the universal propulsion machine 1 is shown in FIGS. In this example, the excavator (screw auger) 9 is attached to the universal propulsion machine 1 described above. As shown in FIG. 6, the fixing bolt 9a of the excavator 9 is inserted into the mounting holes 5d and 5f of the support plate 5 and screwed with a welding nut (not shown). Fix it. Then, as shown in FIG. 7, the universal propulsion machine 1 is installed in the vertical shaft H, the auger blade 9b is attached to the excavator 9, and the return cylinder 3 is driven in the same manner as described above while rotating the auger blade 9b. The rod 3b is extended and the support plate 5 is advanced. Then, the auger blade 9b drills the ground while receiving the propulsive force from the return cylinder 3, and the pilot hole h is formed as a trigger for drilling the drilled hole by the drilling rod. Then, the drive rod 3b is contracted from the longest position of the return cylinder 3 to remove the auger blade 9b from the prepared hole h. By repeating this series of operations, the prepared hole h is formed along the planned direction.

As described above, according to the universal propulsion machine 1 of the first embodiment, since the pilot hole 3 is rotationally excavated by the excavation device 9 using the returning cylinder 3 as a propulsion source, the auger cannot be operated manually by an operator. The blade 9b can be strongly pushed and propelled, and work efficiency is improved.

Further, since the prepared hole h formed by this is constant along the forward / backward movement direction of the drive rod 3b of the return cylinder 3, the prepared hole h is stably and accurately obtained along the planned excavation direction. Can be formed.

Further, when the auger blade 9b is pulled out from the pilot hole h, the auger blade 9b is caught in the pilot hole h, and it is difficult for the worker to remove it.
Since the reciprocating cylinder 3 is used as the propulsion source for pulling and propelling, the auger blade 9b can be safely and safely pulled out from the prepared hole h.

[0029]

[Embodiment 2] Embodiment 2 of the universal propulsion machine 1 is shown in FIGS.
Shown in. In this example, the universal propelling machine 1 described above is provided with the clamp device 7 and the centering guide 8. In mounting them, as shown in FIG. 8, the fixing bolts 7a of the clamp device 7 are inserted through the four mounting holes 5c of the support plate 5 and screwed with a welding nut (not shown) to fix them. The fixing bolt 8a of the centering guide 8 is inserted into the mounting holes 5d and 5e of the support plate 5 and screwed with a welding nut (not shown) to be fixed.

The clamp device 7 will be described below. The clamp device 7 is constructed by pivotally supporting the operating lever 7b on a substantially U-shaped holder 7c.
An eccentric clamp cam 7d is formed at the lower end of b. Then, by rotating the upright operation lever 7b in FIG. 8, the distance between the bottom portion 7e of the eccentric clamp cam 7d and the seat surface 7f of the holder 7c is changed, and various pipe materials p are formed according to various outer diameter sizes. Can be held securely.

A seating surface 8b is also formed on the centering guide 8, and this seating surface 8b is a state where the centering guide 8 is attached.
It is adapted to match the seat surface 7f of the clamp device 7 in the height direction. The centering guide 8 has an inner peripheral portion 8c.
The size and shape of the pipe used should be suitable for the outer diameter of the pipe material to be used.

Clamping device 7 and centering guide 8
According to the universal propulsion device 1 including the following, for example, the following propulsion can be performed.

Propulsion of pushing the excavating rod; When the excavating rod is pushed into the prepared hole h formed in Example 1 to form the excavating hole, the excavating rod 10 is held by the clamp device 7 as shown in FIG. By moving the support plate 5 by the return cylinder 3 in this state, the excavation rod 10 is pushed and propelled. Then, when it reaches the maximum extension state (Fig.
(See (b)), after releasing the holding of the excavating rod 10 and returning the drive rod 3b to the initial state (see FIG. 5A), another excavating rod 10 is held again to continue pushing propulsion. . By pushing and pushing the excavation rod 10 as described above, an excavation hole can be formed in the ground.

According to the pushing propulsion of the excavating rod 10 using the universal propulsion machine 1, the universal propulsion machine 1 of the first embodiment is used.
Similarly to the above, the reciprocating cylinder 3 is used as a propulsion source for the drilling rod 1
Since 0 is pushed in, strong pushing propulsion can be performed,
Work efficiency is improved.

The excavation hole obtained by this pushing propulsion is corrected by the centering guide 8 along the advancing / retreating direction of the drive rod 3b of the return cylinder 3, so that the excavation direction is planned. The drill hole can be formed stably and accurately.

Extraction propulsion of existing pipe : When extracting an existing pipe such as a steel pipe or a resin pipe laid in the ground, when the drive rod 3 is in the most extended state (see FIG. 5 (b)),
The clamp device 7 holds an existing pipe (not shown). While being held in this way, the support plate 5 is moved by the return cylinder 3.
The existing pipe is pulled out by moving the. Then, when the initial state (see FIG. 5A) is reached, the holding of the existing pipe is released, the drive rod 3 is set to the most extended state again, and the pulling propulsion is repeated in the same manner. It should be noted that the centering guide 8 is not necessary when the pulling-out propulsion is performed, so that the centering guide 8 should be removed.

According to the pull-out propulsion of the existing pipe using this universal propulsion machine 1, the existing pipe is pulled out by using the return cylinder 3 as a propulsion source, so that the pull-out propulsion can be performed strongly and the work efficiency is improved. .

Pipes used when replacing existing resin pipes
Propulsion of a wire connected to a plitter : The universal propulsion machine 1 can also be used to replace a resin pipe laid in the ground with a new resin pipe or the like. More specifically,
The replacement of the existing resin pipe is proposed by the applicant of the present invention.
Although it can be performed by the method described in Japanese Patent Publication No. 001-132870, the drawing of the wire (load transmission linear body) connected to the pipe splitter for cutting the existing resin pipe is performed.
Do the following:

That is, when the drive rod 3 is in the most extended state with only the clamp device 7 attached (see FIG. 5).
(See (b)), and the clamp device 7 holds a wire (not shown). While holding this, the support plate 5 is moved by the return cylinder 3 to pull in and drive the wire. Then, when the initial state (see FIG. 5 (a)) is reached, the holding of the wire is released, the drive rod 3 is set to the most extended state again, and the pull-in propulsion is repeated in the same manner.

When the clamp device 7 cannot directly hold the wire, a half-divided auxiliary clamp member 11 as shown in FIG. 10 is used. The wire 12 is inserted into the auxiliary clamp member 11 to
By holding 1 by the clamp device 7, the diameter of the linear wire 12 can be supplemented, and this can be reliably held.

If this universal propulsion machine 1 is used, even if it is a linear wire having a diameter much smaller than that of a tubular body such as a resin pipe or a steel pipe, the reciprocating cylinder 3 is used as a propulsion source to perform strong pulling propulsion. It is possible to improve work efficiency.

As described above, according to the universal propulsion device 1, the excavating device 9, the clamping device 7, and the centering guide 8 can be provided with respect to the support plate 5 that moves in parallel as the return cylinder 3 moves back and forth. Mounting holes 5c and 5 as "mounting parts"
Since d, 5e, and 5f are provided, the pushing propulsion of the excavating device of the first embodiment, the pushing propulsion of the excavating rod of the second embodiment, the pulling propulsion of the existing pipe, and the pulling propulsion of the wire can be performed by only one of them. it can.

[0043]

EFFECTS OF THE INVENTION The universal propulsion machine of the present invention is different in the material of the pipe to be worked (difference between steel pipe and resin pipe) and the difference in propulsion mode (difference between push-in propulsion, pull-out propulsion, and pull-in propulsion). Different propulsion units are not required depending on the type, and it can be used for almost all the work that is currently performed as ground piping, so not only in terms of transportation, but also in terms of installation work in the shaft and cost. The loss of can be greatly reduced.

Further, the mounting portion of the excavator and the clamp device is formed so that the axial center of the rod-shaped excavating blade of the excavator mounted on the support plate and the axial center of the tubular body and the load transfer linear body are aligned with each other. According to the universal propulsion machine, it is not necessary to perform centering for each excavator and clamp device to be mounted, and it is possible to immediately perform high-precision excavation and clamping of pipes and load transfer linear bodies by mounting. Becomes

Further, the return cylinder and the support plate are attached to a frame-shaped base frame, and a tubular body held by a clamp device of the support plate or a reinforcing standing wall extending along the axis crossing direction of the load transmission linear body is attached to the base plate. According to the universal propulsion machine, which is provided with a relief portion for avoiding contact between the tubular body and the load transfer linear body on the reinforcing vertical wall, avoids contact with the tubular body or the load transfer linear body in advance. Since a relief part for this is provided, when using this universal propulsion machine, it is possible to perform work without worrying about the length of the pipe body and load transfer linear body exposed in the machine,
It does not damage the universal propulsion device or the tube.

[Brief description of drawings]

FIG. 1 is a plan view of a universal propulsion device according to an embodiment.

2 is a sectional view taken along the line SA-SA in FIG.

FIG. 3 is a side view of the universal propulsion device as seen from the direction of the line SB in FIG.

FIG. 4 is an enlarged sectional view schematically showing the line SC-SC in FIG.

5 is an operation explanatory view of the universal propulsion device of FIG. 1.

FIG. 6 is an explanatory view showing an embodiment of the universal propulsion device of FIG.

FIG. 7 is an explanatory diagram of the operation of the universal propulsion device in FIG. 6.

8A and 8B are explanatory views showing another embodiment of the universal propulsion device of FIG. 1, in which the partial view (a) is a partially omitted partial sectional explanatory view seen from the front side, and the partial view (b) is the partial view (a). ) Is a configuration explanatory view of the centering guide viewed from the SD line direction, and (c) is the SD of (a)
The structural explanatory view of the clamp device seen from the line direction.

9 is an operation explanatory view of the universal propulsion device of FIG. 8.

10 is an external perspective view of an auxiliary clamp member used in the embodiment of FIG.

[Explanation of symbols]

10,000 universal propulsion machine 2 base frame 2a frame material 2b terminal plate 2c side plate 2d escape area 2e leg 2f guide groove 3 Return cylinder 3a main body 3b drive rod 3c tip 3d connection part 4 bracket 5 Support plate 5a front end 5b guide roller 5c mounting hole 5d mounting hole 5e Mounting hole 5f mounting hole 6 Guide plate 6a Guide groove 7 Clamp device 7a Fixing bolt 7b Operation lever 7c holder 7d Eccentric clamp cam 7e bottom 7f seat surface 8 Centering guide 8a fixing bolt 8b seat surface 8c Inner surface 9 Drilling equipment (screw auger) 9a fixing bolt 9b auger blade 10 drilling rod 11 Auxiliary clamp member 12 wires (load transmission linear body) H shaft h Pilot hole

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Claims (4)

[Claims] 1. A push-in propulsion of a pipe body including a steel pipe or a resin pipe used as a gas pipe or the like and a drilling rod or the like for forming a drilling hole for laying the pipe by using a return cylinder as a drive source, and the pipe body. Is a universal propelling machine that performs at least two of the pull-out propulsion and the pull-in propulsion of the load transfer linear body connected to the existing resin pipe cutting device. A plate is provided, and an attachment portion for detachably attaching and detaching the excavation device that forms the excavation hole and the clamp device that holds at least one of the pipe body and the load transmission linear body is formed on the support plate. A universal propulsion machine. 2. The mounting portion of the excavator and the clamp device is formed such that the axis of the rod-shaped excavating blade of the excavator attached to the support plate and the axis of the pipe body and the load transfer linear body are aligned with each other. The universal propulsion device according to claim 1. 3. A return cylinder and a support plate are attached to a frame-shaped base frame, and a tubular body held by a clamp device for the support plate or a reinforcing standing wall extending along the axis crossing direction of the load transfer linear body is attached to the base plate. The universal propulsion device according to claim 1 or 2, wherein the reinforcing standing wall is provided with an escape portion for avoiding contact with the tubular body or the load transmission linear body. 4. The mounting portion for mounting and demounting a centering guide for positioning the tube body in a predetermined direction when the tube body is pushed and propelled, according to any one of claims 1 to 3. Universal propulsion machine described.