JP3339616B2 - Piping connection unit, jig for assembling piping connection unit, and piping connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for interconnecting power cable protection pipes and other pipes in a trench. The present invention is particularly suitable for a pipe burial operation in a spring area.

[0002]

2. Description of the Related Art Transmission lines and communication lines are often inserted into pipes buried underground. In this type of buried pipe, a large number of pipes are generally buried in one excavation trench. The prior art method of burying a pipe is as follows. That is, a steel sheet pile is struck against the ground and a trench is excavated. Then lower the pipe into the trench. The pipes are arranged in, for example, three rows in parallel in the trench, and several are connected to a certain length.
Next, a spacer called a pipe pillow is placed on the pipe, another three rows of pipes are stacked on the pipe pillow, the second pipe is laid, and the pipes are connected to each other as in the first row. Connect to a certain length. Thereafter, the pipes are sequentially connected via a pipe pillow while being stacked in a predetermined number of stages. When the pipe is laid in the predetermined section, the excavation trench is filled back.

[0003]

The prior art method of burying pipes is a simple and reliable method and is universally practiced. However, the prior art method of burying pipes requires an operator to work inside the digging trench,
There is a drawback that it is difficult to work in spring areas.

[0004] That is, depending on the place where the pipe is buried, there are places where the groundwater level is high, and when the trench is dug, water accumulates in the trench, making it difficult for the operator to descend into the trench. As a countermeasure in such a case, a method of filling grout at the bottom of the excavation groove, that is, between the steel sheet piles, stopping spring water from the bottom, and draining the inside of the excavation groove with a pump is used.

[0005] However, according to these methods, there is a problem that not only a large cost is required for filling the grout, but also the construction period becomes long. Further, the construction method using grout has a problem that the reliability of water stoppage decreases when there is moving water, and there is a problem that a large amount of grout is required to completely stop water stoppage. Further, in the method of driving a steel sheet pile deeply or the method of filling grout in the area surrounded by the steel sheet pile, there is a problem that a void filling grout is required after removing the steel sheet pile.

Therefore, the present invention pays attention to the above-mentioned problems of the prior art, and can perform a pipe burying operation in a spring water area without using grout or the like, and has a short connection period and a pipe connection unit and a pipe connection device. The purpose is to provide. In addition, the present invention also in the spring area,
It is an object of the present invention to provide a pipe connection method capable of connecting pipes in an excavation trench.

[0007]

According to claim 1 for achieving the above object, there is provided a means for solving] invention, in the formed excavated groove
A pipe connection unit to be suspended,
Two tracks are set up on the ground, and the piping connection unit
A pipe bundling part in which a plurality of pipes are bound at predetermined intervals,
It has a moving bogie part, the pipe binding part is composed of a frame having a slide part on the inner surface, a plurality of pipe pillows having notches, and a plurality of pipes, and the pipe pillow is fitted with the slide part while fitted to form stacked frame, the tube is sandwiched between the tubes pillow is held by the notch, the cart unit, the ground
Attached to two of the trajectory and engaging a downward that match that provided in the upper
, The pipe binding part and the moving carriage part are arranged
The tube bundling part is suspended from the moving bogie part via the connecting means.
It is a piping connection unit characterized by being connected.

[0008] The invention for solving the same problem is based on an orbit.
Suspended in an excavation trench without
Having a caster provided above, the caster comprising:
The feature is that the direction can be changed arbitrarily
The pipe connection unit according to claim 1 . Also, the invention of a jig for assembling the above-mentioned piping connection unit,
It has a pedestal and a vertical member, and the pedestal is provided with a temporary fixing member for temporarily fixing the frame at predetermined intervals.

[0009] Further, according to an aspect of the present invention, an improvement is added.
Te, the connection means, the attachment position is a modifiable
Is also good.

The invention of the pipe connection device is described in claim 1.
Move the piping connection unit on the
In a pipe connection device to be connected, a frame and a contact member
The frame consists of a rail laid on the ground.
A transfer roller for engaging the road and a support suspended in the digging trench;
Holding part and an auxiliary track, and the contact member is a piping connection unit.
The holding surface, which can abut each pipe end face,
With the auxiliary roller engaged with the auxiliary track
The frame is suspended from the frame into the excavation groove, and the pressing device is
The contact member is movable between the holding part and the holding surface.
A pipe connection device characterized in that:

[0011] Still another invention of a pipe connection device is as follows.
In a pipe connection device that connects a pipe by moving a pipe connection unit in which a plurality of pipes are bound at predetermined intervals in a digging groove, the frame includes a frame, a contact member, and a pressing device, and the frame is laid on the ground. A roller for movement to be engaged with the set track, a support portion suspended in the excavation groove, and an auxiliary track, the contact member has a pressing surface capable of contacting each pipe end surface of the pipe connection unit, An auxiliary roller is provided, the contact member is suspended from the frame into the excavation groove in a state where the auxiliary roller is engaged with the auxiliary track, and a pressing device is disposed between the support portion and the pressing surface to move the contact member. It is characterized by being.

Further, as an example of the embodiment , two tracks are laid on the ground in parallel with the excavation groove, a plurality of pipes are bound at a predetermined interval, and an engaging portion is engaged with the two tracks. Hanging the pipe connection unit provided with the inside of the excavation groove, engaging the engaging portion with the two tracks, advance the pipe connection unit in the excavation groove, the tip of each pipe to the rear end of the existing pipe Can be connected. Here, the engaging portion is a concept including, for example, a roller.

[0013] The above-mentioned pipe connection unit is lowered into an excavation groove, and supported by a roller or a caster, and the pipe connection unit is advanced in the excavation groove so that the tip of each pipe is attached to the rear end of the existing pipe. By connecting
Work can be done.

Further embodiments <br/> obtained by improving the invention described above, the open end of the tube, a cap covering the opening of each tube of the piping connection unit, characterized in that it is fitted.

According to the first and second aspects of the present invention, a large number of pipes are bound at a predetermined interval, thereby facilitating the movement of the pipes in the excavation trench. That is, in the pipe connection unit according to the first and second aspects, the pipe pillow is fitted in the frame in a stacked manner while being fitted to the slide portion. Thus, the tube pillows are in place without displacement. Also, since the tube is sandwiched between the tube pillows and held by the notches, the tube does not shift. Assembly of the pipe connection unit of the present invention,
While fitting a part of the pipe pillow to the sliding portion of the frame, insert the pipe pillow into the frame, then place the pipe on the pipe pillow, and then insert another pipe pillow into the frame. .

The invention according to claim 3 is used when the pipes and the pipe pillows are alternately stacked.
A typical procedure is as follows. That is, the frame is temporarily fixed by the temporary fixing member at predetermined intervals on the pedestal. Next, the tube pillow is inserted into the frame. Subsequently, the tube is placed on the tube pillow, with the tip of the tube abutting on the vertical member. Thereafter, the pipe pillows are sequentially inserted, and the pipes are placed on the pipe pillow while abutting on the vertical members. In the pipe connection unit thus assembled, the pipe end faces are aligned in the same plane.

[0017] Chi lifting the movable carrier portion with a caster or ground track engaging rollers running on the ground, by moving the movable carriage portion, to easily move the pipe connection unit of the excavation groove be able to. In the present invention, after the pipes are joined and the pipes are backfilled to the extent that they do not drop, the connecting means is disconnected.

[0018] Further, when the movable bogie section and the pipe binding section are connected by a connecting member, and when the mounting position of this connecting member can be changed, the hanging position of the pipe binding section is adjusted in accordance with the burial depth of the existing pipe. It can be changed arbitrarily.

According to the fourth and fifth aspects of the present invention, a pipe connection unit in which a plurality of pipes are bound at a predetermined interval is moved in an excavation trench. First, a frame is placed on a track provided on the ground. Put on. At this time, the support portion of the frame and the contact member are in a state of being suspended in the excavation groove. Then, the entire apparatus is run via the moving roller, and the contact member is moved to a predetermined position in the excavation groove. Next, the frame is fixed by measures such as locking the moving roller. Subsequently, the pressing device is operated to press the contact member. In the present invention, since the contact member is on the auxiliary track and can be moved on the auxiliary track by the pressing roller, the operation of the pressing device causes the contact member to move forward along the auxiliary track. Then, the holding surface can be brought into contact with the end face of the pipe connection unit to move the pipe connection unit.

Further, in the method of laying a track parallel to the excavation trench on the ground, the pipe connection unit is moved using this track. Then, the tip of each pipe of the pipe connection unit is connected to the rear end of the existing pipe.

Further, down the pipe connection unit in which a plurality of pipes are bundled in a predetermined interval in the excavation groove, bearing a pipe connection unit by casters for moving on the ground, the piping connection unit Drilling groove By moving the pipe forward, the tip of each pipe can be connected to the rear end of the existing pipe.

Further to the open end of the tube, mounting the cap covering the opening of each tube of the piping connection unit result, it is possible to prevent the dust and sand from entering the tube.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a specific embodiment of the present invention will be described with an example of burying a pipe. Drawing 1 is a perspective view at the time of hanging a piping connection unit of a concrete embodiment of the present invention in a digging trench. FIG. 2 is a perspective view of the upper part of the piping connection unit of FIG. FIG. 3 is a perspective view of a piping connection unit assembling jig according to a specific embodiment of the present invention. FIG. 4 shows FIG.
It is a perspective view which shows the assembly procedure of the piping connection unit using the piping connection unit assembly jig of this. FIG. 5 is a perspective view when the pipe connection unit of FIG. 1 is arranged in a digging trench. FIG. 6 is a perspective view of a pipe connection device according to a specific embodiment of the present invention. FIG. 7 is an enlarged view of the inside of the circle in FIG.
FIG. 8 is an explanatory diagram of the inside of the excavation trench showing one step of the pipe connection method according to the specific embodiment of the present invention. FIG. 9 is a flowchart showing a procedure of a pipe burying work to which the pipe connection method of the present invention is applied. FIG. 10 is an explanatory diagram of the inside of the excavation trench showing a step after the step of FIG. 8. FIG. 11 is a perspective view of a pipe connection unit and a cap showing one step of a pipe connection method according to a specific embodiment of the present invention. FIG. 12 is a perspective view of a main part of a pipe connection unit and a cap showing one step of a pipe connection method according to a specific embodiment of the present invention. FIG.
FIG. 3 is a partially sectional perspective view showing a modification of the present invention. FIG. 14 is an explanatory diagram showing the inside of a digging trench showing a modification of the present invention.

In describing the pipe connection method of the present embodiment, first, a pipe connection unit and a pipe connection device used in the method will be described. The pipe connection unit 1 used in the present embodiment is as shown in FIG. 1 and is roughly divided into a pipe binding section 2 and a moving carriage section 3, both of which are connected via a connecting means, for example, a connecting member 5. Things.
Explaining one by one, the pipe bundling part 2 is composed of three rows and eight stages (2 rows).
Four tubes), and each tube 6 is arranged in parallel and with both ends aligned. The tube 6 is, for example, a power cable protection tube, and its material is, for example, FRP (fiber reinforced plastic). At one end of the pipe 6, a pipe joint 8 for connection to another pipe is attached in advance.

In the present embodiment, the pipe binding section 2 comprises a frame 10 and pipe pillows 11, 12 in addition to the pipe 6. That is, as shown in FIGS. 2 and 4, the frame 10 is formed of a channel steel as a raw material, and the entire shape of the frame 10 whose upper side is opened is formed in a U-shape. The above-mentioned channel steels are welded so that all of the sliding portions, that is, the concave grooves 13 face the inside, and two frame bodies 10 are used at intervals. Further, two holes 14 are provided at the upper end of the frame body 10 (see FIG. 2).

On the other hand, each of the tube pillows 11 and 12 is a thin block-shaped member formed by injection molding of a synthetic resin. Of the pipe pillows 11 and 12 constituting the pipe binding unit 2,
As shown in FIG. 4, the upper and lower tube pillows 11 are each provided with three arc-shaped notches 15 on one surface at equal intervals, and the tube pillows 12 disposed in the middle portion are also provided with upper and lower surfaces. Are provided with three notches 15 each. These notches 15
Is substantially equal to that of the outer circumference of the tube 6 described above.
The width of the tube pillow 11 is substantially equal to the length between the opposed concave grooves 13 of the frame 10. Furthermore, the thickness of the tube pillow 11 is substantially equal to the width of the concave groove 13, that is, the groove width of the channel steel.

The pipe binding portion 2 is provided on the frame 10 with pipe pillows 11 and 1.
2 and, for example, three rows of tubes 6 are alternately stacked and arranged. Each tube 6 is sandwiched between cutout portions 15 of the tube pillows 11 and 12, and the movement in the lateral direction is restricted. ing. Further, the binding of the tube 6 by the frame 10 and the like
Since it is performed in several places, each tube 6 is arranged in parallel. Both side portions of the tube pillows 11 and 12 are stacked in a state where they are fitted into the concave grooves 13 of the frame body 10.
1 and 12 do not move relatively.

As shown in FIG. 1 and FIG.
Two beam members 20 and two bar members 21 are assembled in a ladder shape, and four vertical members 22 are welded to the lower side from near a joint portion between the two. A traveling roller 23 is attached near each end of the beam member 20. The mounting interval of the running roller 23 in the longitudinal direction of the beam 20 is equal to the interval of a main track 71 described later.
Near the lower end of the vertical member 22, two holes 25 are provided.

In the pipe connection unit 1 of the present embodiment, the upper end of the pipe binding section 2 is connected to the vertical member 22 of the movable trolley section 3, and the pipe binding section 2 is suspended from the movable trolley section 3. The connection between the two is performed via a connecting member 5. The connecting member 5 is a strip-shaped steel plate provided with four holes 27.

The attachment of the connecting member 5 is performed by a temporary fastening element 28 such as a set of two bolts. That is, one bolt 28 is fastened between the vertical member 22 of the movable carriage 3 and the connecting member 5, and one bolt 28 is fastened between the connecting member 5 and the upper end of the pipe binding portion 2. Therefore, the attachment and detachment of the pipe binding unit 2 and the movable carriage unit 3 is only very simple by attaching and detaching several bolts 28, which is extremely easy. Further, the connecting member 5 is provided with four holes 27, while the frame 10 and the vertical member 22 are also provided with two holes.
While the individual holes 14 and 25 are provided, the connecting member 5 is connected by the two bolts 28 as described above, so that the position for inserting the bolts into the holes 14 and 25 can be selected. Thereby, the attachment position of the connecting member 5 can be changed. As a result, the hanging depth of the pipe binding portion 2 can be changed.

Although the method of assembling the pipe connection unit 1 is optional, it is convenient to use a pipe connection unit assembly jig 30 as shown in FIG. The piping connection unit assembling jig 30 has a pedestal 31 provided with a vertical member 32. The pedestal 31 is welded in a frame shape by a steel material.
Equal to that of A large number of holes 35 are provided on the side surface of the pedestal 31. Two predetermined pairs of holes 35 are selected, and two (four in total on both side surfaces) temporary fixing members, ie, positioning members 34 are attached with bolts 48. The positioning member 34 is a rectangular plate-like member.
A positioning piece 39 having a length of one-half is formed in the vertical direction. The positioning member 34 is attached at a position where the distance between the positioning pieces 39 is equal to the distance between the frame bodies 10, in other words, the distance between the vertical members 22 of the movable bogie unit 3.

The vertical member 32 is also made of steel, and has three rectangular members 33 mounted in parallel in a rectangular frame 36 to form a wall. The auxiliary leg 26 is welded to the frame 36 to maintain the vertical state. The piping connection unit assembling jig 30 includes:
The vertical member 32 and the pedestal 31 are attached by bolts 38, and they are separated during transportation.

The method of assembling the pipe connection unit 1 using the pipe connection unit assembling jig 30 will be described below. That is, the frame 10 of the pipe connection unit 1 is produced in advance, and the frame 10 is brought into contact with the positioning member 34 to temporarily fix the frame 10. It is preferable that the temporary fixing is performed by bolting the frame 10 to the pedestal 31 or the positioning member 34. As described above, since the positioning member 34 is attached at a position equal to the interval between the vertical members 22 of the movable bogie unit 3, the frame 10 is temporarily fixed, so that the frame 10 is arranged at a predetermined interval. It will be.
Then, from the opening at the upper end of the frame body 10, the lowermost tube pillow 11,
That is, the tube pillow 11 provided with the notch 15 on only one side
Insert The insertion of the tube pillow 11 is performed by engaging a side portion of the tube pillow 11 with the concave groove 13 of the frame body 10 and sliding the concave groove 13 downward.

Next, the pipe 6 is arranged in the notch 15 of the pipe pillow 11. At this time, each end of the tube 6 is kept in contact with any part of the vertical member 32. In the present embodiment,
It is in contact with the back surface of the vertical member 33 (channel steel). Then, the intermediate pipe pillow 12 is connected to the frame 10 in the same manner as the previous pipe pillow 11.
And the tube pillow 12 is stacked on the tube pillow 11 and the tube 6. Subsequently, the second-stage tube 6 is placed on the tube pillow 12. At this time, as in the above case, each end of the tube 6 is brought into contact with any part of the vertical member 32. Thereafter, the tube pillow 12 and the tube 6 are sequentially stacked, and the last tube pillow 11 is mounted when the tubes 6 are stacked, for example, in eight stages.

At this time, the stacked state of the tubes 6 is such that the ends of all the tubes 6 are in contact with the vertical members 32, so that the ends of all the tubes 6 are aligned. . When the mounting of the pipe 6 and the pipe pillow 11 is completed, the movable bogie unit 3 is connected to the frame 10 via the connecting member 5. And the frame 10
Release the temporary fixation.

Next, the structure of the apparatus used in the pipe connection method of the present embodiment will be described with reference to FIGS.
The pipe connection device 40 used in the present embodiment includes a frame 4
1, a contact member 42, and four hydraulic cylinders (pressing devices) 43. The frame 41 includes a horizontal portion 49 and a support portion 44. The shape of the horizontal part 49 is
One beam member 45, two horizontal beam members 46, and two auxiliary beams 37 are combined in a “C” shape, and an auxiliary track 50 is passed between the auxiliary beam 37 and the beam member 45. ing. The reason that the shape of the horizontal portion 49 is the “C” shape as described above and the opening is provided on one side is that the pipe connection unit 1 is suspended in the excavation groove 70 as described later. This is to prevent the end of the tube 6 from hitting.

What should be particularly noted in the configuration of the horizontal portion 49 is that running rollers 53 are provided at both ends of the beam member 45 and at the ends of the two auxiliary beams 37. The mounting interval of the traveling roller 53 in the longitudinal direction of the beam member 45 is substantially equal to the interval of a main track 71 described later. At the ends of the beam member 45 and the auxiliary beam 37, a frame-shaped member 51 is disposed. A short L-shaped steel 52 is welded to an intermediate portion of the frame-shaped member 51, and another L-shaped steel 58 is welded to the L-shaped steel 52 at a short distance from the frame-shaped member 51. ing. The main track 71 is held by the frame member 51 and the L-shaped steels 52 and 58. Further, a through hole is provided in the frame member 51, and two nuts 54 are welded, and a bolt 55 is fitted to the nut 54 (see FIG. 7). Then, by tightening the bolt 55, the tip of the bolt 55 is pressed against the side surface of the main track 71, and the running of the frame 41 is prevented. The beam member 45
The only relationship between the frame member 51 and the upper member 59 is that the upper member 59 of the frame member 51 is placed on the beam member 45, and they are not fixed to each other.

The support portion 44 is suspended from a middle portion of the beam member 45 of the horizontal portion 49 by a suspending arm 56, and has a lattice portion 57 made of steel at the lower portion. Support 44
The connecting portion 60 and the horizontal portion 49 are connected by a connecting member 60 (shown in FIG. 8) similar to the connecting member 5 described above.
The droop depth can be changed.

The shape of the contact member 42 is the same as that of the support portion 4 described above.
4 and the hanging arm 61 and the grid-like portion 6
2 The two are connected by a connecting member 64 (shown in FIG. 8). When the contact member 42 is the support portion 4
4 in that an auxiliary roller 63 is provided above the contact member 42 and is suspended from the auxiliary track 50 by the auxiliary roller 63. Therefore, the contact member 42 can approach and separate from the support portion 44. Another difference is that a plate 66 is stretched on the front surface of the lattice portion 62 to form a holding surface 65. Each of the four hydraulic cylinders 43 is a frame 4
The first support portion 44 and the contact member 42 are arranged in a well-balanced manner. Therefore, by driving the hydraulic cylinder 43, the contact member 42 moves in parallel.

Next, the pipe connection method according to the embodiment of the present invention will be described in the order of general pipe burial work.
The steps of the pipe burying work described in the present embodiment are as shown in the flowchart of FIG. That is, first, a steel sheet pile 69 is driven and a groove is excavated as shown in FIGS. 1 and 5 by a known means (step 1). At this time, even in an area where the groundwater level is high, water will spring in the excavation trench 70. Subsequently, as shown in FIG. 5, two main tracks 71 are laid on the ground in parallel with the excavation trench 70 (step 2).

In parallel with these operations, predetermined equipment is transported to the site. Equipment is transported in a disassembled state,
These are assembled on site (step 3). More specifically, the assembly jig 30 of the pipe connection unit includes a pedestal 31.
The vertical member 32 is disassembled and transported, and both are bolted on site. The pipe connection device 40 includes a horizontal portion 49 of the frame 41, the support portion 44, and the hanging arm 6 of the contact member 42.
1. The grid portion 62 and the hydraulic cylinder 43 are separately transported separately and assembled on site.

First, the pipe connecting device 40 is suspended in the excavation groove 70, and the running roller 53 is engaged with the main track 71 (step 4). Subsequently, the pipe connection unit 1 is assembled (Step 5). To assemble the pipe connection unit 1, the pipe binding unit 2 is assembled using the pipe connection unit assembly jig 30 as described above, and the movable carriage unit 3 and the pipe binding unit 2 are connected via the connecting member 5. Here, it is desirable to apply a lubricant to the connection portion of the pipe 6.

Then, as shown in FIG. 1, the sling 73 is hung on the pipe connection unit 1, suspended by the crane 75, and slowly lowered into the excavation groove 70 (step 6). It should be noted that the method of lowering the pipe connection unit 1 into the excavation groove 70 may be another method. The hanging position of the pipe connection unit 1 is between the existing pipe and the pipe connection device 40. Piping connection unit 1
When suspending, the traveling roller 2 of the pipe connection unit 1
3 is engaged with the main track 71. Then, the suspended portion of the pipe connection unit 1 is pushed along the main track 71 toward the existing pipe connection unit, and the traveling roller 23 is rolled to cause the pipe connection unit 1 to travel, and each pipe of the pipe connection unit 1 is moved. 6 is brought as close as possible to the rear end of the existing pipe (Step 7).

Subsequently, the pipe connection device 40 previously suspended
Is pushed along the main track 71 from the ground, and the running roller 53 is run to bring the contact member 42 as close as possible to the rear end of the pipe connection unit 1 (Step 8). Then, the pipe connection device 40 is fixed so as not to move at that position (step 9). That is, the bolt 55 provided near the running roller 53 is tightened, and the end of the bolt 55 is pressed strongly against the side surface of the main track 71 to fix the frame 41 to the main track 71. In addition, the reaction force generating member 77 is arranged behind the support member 44 as necessary to prevent the frame 41 from moving.
The inside of the excavation groove 70 at this time is as shown in FIG.

In this state, the hydraulic cylinder 43 is operated to extend the cylinder as shown in FIG.
As a result, the contact member 42 is pushed by the hydraulic cylinder 43, the auxiliary roller 63 travels on the auxiliary track 50, and the contact member 42 advances in parallel. And the contact member 42 contacts the rear end of the pipe connection unit 1 and presses this forward.
When the hydraulic cylinder 43 is further extended, in the pipe connection unit 1, the traveling roller 23 travels on the main track 71, and the tip of each pipe 6 is connected to the existing pipe (the pipe 6 of the pipe connection unit 1 embedded earlier). Contact the rear end. That is, since the pipe connection unit 1 is formed by connecting the pipes 6 in parallel at a predetermined interval, the pipe connection unit 1 is mounted on the same track 71 as the existing one and travels to connect the pipes. The tip of each pipe 6 of the unit 1 contacts the rear end of each pipe 6 of the existing piping connection unit 1. When the pipe connection unit 1 further advances, the pipe connection unit 1 is pushed into the pipe joint 8 attached to the rear end of the existing pipe, and the connection of the pipe is completed (Step 10).

Thereafter, the hydraulic cylinder 43 is contracted to remove the contact member 42 from the pipe connection unit 1, and the bolt 5
5 is released to release the fixing of the frame 41. Then, the pipe connection device 40 is pushed in the direction opposite to the previous direction and is largely retracted. Thereafter, the above-described steps of assembling the pipe connection unit 1 and thereafter are repeated (step 11). It should be noted that only the assembling process of the pipe connection unit 1 may be separately performed, and a large number of the pipe connection units 1 assembled in a predetermined state may be prepared. It will proceed. When the length of the pipe reaches a predetermined length, the cap 80 is suspended in the excavation groove 70 as shown in FIG. 11 (step 12). Here, the cap 80 is made of a steel material in the shape of a box, and has a cushion 81 on a vertical surface as shown in FIGS. The box-shaped portion of the cap 80 and the cushion material 81 are large enough to simultaneously cover all the openings of the pipes 6 of the pipe connection unit 1.

The cap 80 is pressed against the rear end of the pipe connection unit 1 using the pipe connection device 40. That is, the cap 80 has the crosspiece 82 at the upper end placed on the pipe 6 of the pipe connection unit 1, and in this state, is pressed by the pipe connection device 40 from behind. Piping connection device 4
The method of use and the function of 0 are exactly the same as when the piping connection unit 1 is pressed.

When the cap 80 is attached, the cap 80 is fixed to the rear end of the tube 6 with a predetermined fixing member 83. In the present embodiment, as described above, the reason why the cap 80 is attached to the rear end of the pipe is to prevent sand from entering the inside of the pipe 6 at the time of backfilling. Subsequently, the excavation groove 70 is partially backfilled to the extent that the pipe connection unit 1 is supported by the soil, more specifically, to the level of the pipe top (step 13). However, the vicinity of the end cap 80 is left unfilled for the next construction. When the construction period is long, the relevant portion is temporarily backfilled. Then, the bolt 28 of the connecting member 5 that connects the pipe binding unit 2 of the pipe connection unit 1 and the movable truck unit 3 is removed, and the movable truck unit 3 is connected to the pipe binding unit 2.
(Step 14).

Then, the main orbit 71 is removed (step 15).
The excavation groove 70 is backfilled (step 16), the steel sheet pile 69 is removed, and a series of pipe burying work is completed (step 17). At the time of the next construction, the cap 8 of the existing piping connection unit 1
0 is lifted and the above-mentioned construction is performed (step 18).

The above series of works can all be performed by workers on the ground. Therefore, even if there is spring water in the excavation groove 70, it is not always necessary to drain the spring water. In the above embodiment, the pipe binding unit 2 of the pipe connection unit 1 and the movable trolley unit 3 are connected via the connecting member 5, but the connecting member 5 may be omitted and both may be directly connected by bolts. Further, in the present embodiment, the configuration in which the hanging depth of the pipe binding portion 2 is adjusted by selecting the connecting hole of the connecting member 5 is disclosed. However, a large number of connecting members 5 having different lengths are prepared and excavation is performed. It is also possible to select a connecting member 5 having an appropriate length according to the depth of the groove, and to adjust the hanging depth of the pipe binding portion 2. Connecting members 60 and 64 used in the pipe connection device 40
The same applies to.

In the present embodiment, the running rollers 23 and the like are all wheel-shaped rollers, but of course other shapes can be used. More specifically, the present invention can be applied to a roller having a roller shape, a roller having a barrel shape, or a spherical roller.

As the pressing device of the pipe connection device 40, a hydraulic cylinder has been disclosed as the most general one.
Applications such as pneumatic cylinders, screw-type jacks (movable by a motor), and toggle mechanisms are also possible. However,
In practice, hydraulic pressure is the most common drive source, and there is no fear of electric shock and strong propulsion.Therefore, it is recommended to use a hydraulic cylinder as shown in the embodiment as a pressing device. From the viewpoint of moving the contact member in parallel, it is desirable to use four hydraulic cylinders. As a fixing means of the frame of the pipe connection device 40, a clamp or the like can be used in addition to the measure of the present embodiment.

The contact member 42 of the pipe connection device 40 has a structure in which a plate 66 is provided on the surface. However, if a surface (pressing surface) that evenly contacts the rear end of the pipe 6 exists, the plate of the surface may be provided. May be omitted to form a lattice-like state. Although the above embodiment has been described with reference to the example of pipe burial work, the present invention can be applied to other types of pipe burial.

In the above embodiment, two main tracks 71 are laid on the ground in parallel with the excavation trench 70, and the main tracks 71
Along the pipe connection unit 1 and the pipe connection device 40
The traveling rollers 23 and 53 are moved so that the front end of each pipe 6 is brought as close as possible to the rear end of the existing pipe. Therefore, in the above embodiment, since the traveling rollers 23 and 53 move on the main track 71, it is difficult to form a curved pipe.

That is, when the pipe is curved, the pipe connection unit 1 and the pipe connection device 40 need to move and run on a curve (concentric circle). Therefore, the main trajectory 71 must be curved. However, the curving of the main track 71 is complicated due to the complicated workability at the site, or the running roller 23,
It is conceivable that inconveniences such as the 53 being removed from the wheel may occur.

Therefore, when burying a curved pipe,
As a modification of the above embodiment, as shown in FIGS. 13 and 14, casters 91, which do not lay the main track 71 and allow the pipe connection unit 1 and the pipe connection device 40 to move in any direction, 92 are provided.
The caster 91 of the pipe connection unit 1 is used in place of the traveling roller 23 of the above-described embodiment, and is mounted near the end of the beam member 20 of the movable bogie unit 3. The casters 91
The roller 95 is supported by a fork 96. As the roller 95 rolls, the fork 96 also allows free rotation, and the traveling direction can be arbitrarily changed. The caster 91 has a brake 97, and the brake 97
The roller 95 can be locked with.

The casters 92 of the pipe connection device 40 are used in place of the traveling rollers 53 of the above-described embodiment, and are attached to portions where both ends of the beam member 45 and the ends of the two auxiliary beams 37 are joined. The caster 92 of the pipe connection device 40
The structure is the same as that of the caster 91 of the pipe connection unit 1 described above. Other configurations of the modified example include an auxiliary roller 63 provided above the contact member 42, including a point that the contact member 42 is suspended from the auxiliary track 50 by the auxiliary roller 63.
This is the same as the above embodiment.

Further, the piping connection method of the modified example is basically the same as the above-described embodiment shown in the flowchart of FIG. However, in the modified example, the step 4 of engaging the traveling roller 53 of the movable bogie unit 3 and the pipe connection device 40 with the main track 71 as in the above-described embodiment is performed by the caster of the movable bogie unit 3 and the pipe connection device 40. This is a step of placing the 91 and 92 on the ground. However, if the road surface is soft, casters 9
Since 2 is submerged in the soil, it is desirable to lay an iron plate 98 (see FIG. 14) on the ground in advance. When laying the iron plate 98, it is necessary to adjust the height in the vertical direction. Then, step 6 of lowering the pipe connection unit 1 into the excavation groove 70
Thereafter, with the casters 91 of the pipe connection unit 1 placed on the ground or on the iron plate 98, the tip of each pipe 6 of the pipe connection unit 1 is brought as close as possible to the rear end of the existing pipe (Step 7).

It should be noted here that the excavation groove 7 on the curve
Even in the case where a curved pipe is connected within 0, the pipe unit 1 and the pipe connection device 40 can be moved and run on a curve by the casters 91 and 92. Since the casters 91 and 92 do not move on the main track 71, not only do not lose their wheels, but also the time and effort for constructing the main track 71 on site can be saved.

Thereafter, the pipes are connected as in steps 8 to 10 of the above embodiment. That is, by extending the hydraulic cylinder 43 in a state where the casters 92 of the pipe connection device 40 are locked, the auxiliary roller 63 travels on the auxiliary track 50, advances the contact member 42, and the contact member 42 The connection unit 1 is brought into contact with the rear end. When the hydraulic cylinder 43 is further extended, the casters 91 of the pipe connection unit 1 run on the ground, and the ends of the respective pipes 6 come into contact with the rear ends of the existing pipes. I do.

Thereafter, as described in the steps 11 to 18 of the above embodiment, after repeating the assembling steps,
When the pipe reaches a predetermined length, the cap is pressed against the rear end of the pipe connection unit 1 (see FIG. 11), and
Backfill. In this modification, the work of removing the main track 71 is not necessary, but when the iron plate 98 is laid on the ground, the iron plate 98 needs to be removed. In the embodiment using the casters described above, the case where curved pipes are connected has been described as an example, but, of course, the embodiment using casters can also be used when connecting straight pipes. is there.

[0062]

According to the pipe connection unit according to the first and second aspects, the pipe pillows are fitted in the frame body in a stacked manner while being fitted to the slide portion, so that the pipe pillows are not shifted from each other in a predetermined positional relationship. To maintain. Further, according to the pipe connection unit of the present invention, the pipe does not shift. Therefore, the pipe connection unit of the present invention has an effect that it can be easily suspended in a digging groove or moved in the digging groove.

In the piping connection unit of the present invention, the pipe pillow is inserted into the frame while fitting a part of the pipe pillow to the sliding portion of the frame, and then the pipe is placed on the pipe pillow. Subsequently, assembly can be performed by inserting another pipe pillow into the frame, so that the assembling work is extremely easy.

Further, according to the first and second aspects of the present invention, the pipe connection unit can be moved by running on a track on the ground by means of casters and rollers, so that the pipe binding portion in the excavation groove can be easily moved. There is an effect that can be done. Further, in the pipe connection unit of the present invention, since the pipe tying portion and the movable trolley are connected by the connecting means, there is an effect that the two can be easily separated and the movable trolley can be reused.

According to the third aspect of the present invention, the pipe connection unit has an effect that the end faces of the pipes are flush with each other.

According to the pipe connection device of the fourth and fifth aspects, there is an effect that the operator can press the pipe connection unit without entering the inside of the excavation groove.

[Brief description of the drawings]

FIG. 1 is a perspective view when a pipe connection unit according to a specific embodiment of the present invention is suspended in an excavation trench.

FIG. 2 is a perspective view of an upper portion of the piping connection unit of FIG.

FIG. 3 is a perspective view of a piping connection unit assembling jig according to a specific embodiment of the present invention.

FIG. 4 is a perspective view showing a procedure of assembling a pipe connection unit using the pipe connection unit assembly jig of FIG. 3;

FIG. 5 is a perspective view when the pipe connection unit of FIG. 1 is arranged in a digging trench.

FIG. 6 is a perspective view of a pipe connection device according to a specific embodiment of the present invention.

FIG. 7 is an enlarged view inside the circle of FIG. 6;

FIG. 8 is an explanatory diagram inside a digging trench showing one step of a pipe connection method according to a specific embodiment of the present invention.

FIG. 9 is a flowchart showing a procedure of pipe burying work to which the pipe connection method of the present invention is applied.

FIG. 10 is an explanatory view of the inside of the excavation trench showing a step after the step of FIG. 8;

FIG. 11 is a perspective view of a pipe connection unit and a cap showing one step of a pipe connection method according to a specific embodiment of the present invention.

FIG. 12 is a perspective view of a main part of a pipe connection unit and a cap showing one step of a pipe connection method according to a specific embodiment of the present invention.

FIG. 13 is a partial cross-sectional perspective view when a pipe connection unit according to a modified example of the present invention is arranged in an excavation groove.

FIG. 14 is an explanatory diagram showing the inside of a digging trench showing a modification of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Piping connection unit 2 Piping bundling part 3 Moving trolley part 5 Connecting member 6 Pipe 10 Frame body 11, 12 Pipe pillow 13 Slide part 15 Notch 23 Running roller 28 Bolt 30 Piping connection unit assembly jig 31 Pedestal 36 Auxiliary roller 40 Piping Connection device 41 Frame 42 Contact member 43 Hydraulic cylinder (pressing device) 44 Support section 50 Auxiliary track 53 Running roller 55 Bolt 60 Connecting member 63 Auxiliary roller 70 Drilling groove 71 Main track 80 Cap 81 Cushion material 91 Caster 92 Caster

Continued on the front page (72) Inventor Takao Kishi 3-3-22 Nakanoshima, Kita-ku, Osaka-shi Kansai Electric Power Co., Inc. (72) Inventor Teruo Yamashita 3-2-2, Nakanoshima, Kita-ku, Osaka-Kansai Electric Power Co., Inc. (72) Inventor Toshio Watanabe 3-3-22 Nakanoshima, Kita-ku, Osaka-shi Inside Kansai Electric Power Co., Inc. (72) Inventor Osamu 3-2-2 Nakanoshima, Kita-ku, Osaka City, Kansai Electric Power Co., Inc. (72) Inventor Tadaaki Tsuno 2-9-18 Honjohigashi, Kita-ku, Osaka-shi Kanden Kogyo Co., Ltd. (72) Inventor Yoshiaki Murakami 2-9-1, Honjohigashi 2-chome, Kita-ku, Osaka-shi Kanden Kogyo Co., Ltd. (72) Inventor Hiroshi Ueno 2-18-18 Honjo Higashi, Kita-ku, Osaka-shi Kanden Kogyo Co., Ltd. (72) Inventor Takanobu Hanaoka 1-112-19 Kitahorie, Nishi-ku, Osaka-shi Kurimoto Iron Works Co., Ltd. (56) References JP 60-192188 (JP, A) JP-A-5-344623 (JP, A) JP-A 5-74121 (JP, U) JP-A 55-78160 (J , U) Japanese Utility Model Hei 7-16542 (JP, U) Japanese Utility Model No. 60-29292 (JP, Y2) Japanese Patent Publication No. 43-23193 (JP, B1) Japanese Utility Model No. 13-19611 (JP, Y1) (58) Field surveyed (Int.Cl. ⁷ , DB name) H02G 1/06-1/08 H02G 9/06-9/10 F16L 1/00

Claims (5)

(57) [Claims] An arrangement suspended from a formed excavation trench.
A pipe connection unit that has two tracks parallel to the
Is installed on the ground, and the piping connection unit is
It has a pipe binding part bound at regular intervals and a
The pipe binding portion includes a frame having a slide portion on an inner surface, a plurality of pipe pillows having a notch, and a plurality of pipes, and the pipe pillows are stacked on the frame while being fitted with the slide portion. The tube is sandwiched between the tube pillows and held by the notch, and the moving trolley is provided on the ground.
-Mounted roller that engages two tracks
The pipe binding section and the movable trolley section are
It is connected via a connecting means in a hanging state from the moving bogie part.
Pipe connection unit, characterized in that that. (2) being suspended in an excavation groove having no track,
Having casters provided on the ground instead of rollers,
The caster can change direction arbitrarily
The pipe connection unit according to claim 1, wherein
knit. 3. A jig for assembling a pipe connection unit according to claim 1, having a base and vertical member, temporarily fixing member for temporarily fixing the frame body at a predetermined interval is provided in the base A jig for assembling a pipe connection unit. 4. The piping connection unit according to claim 1,
A pipe connection device that connects the pipe by moving it in the
A frame, an abutting member, and a pressing device.
The lame is a moving roller that engages the track laid on the ground
And a support part suspended in the excavation groove, and an auxiliary track,
The contact member can contact each pipe end face of the pipe connection unit
With an auxiliary roller and an abutment member
Into the digging trench from the frame with the
The pressing device is disposed between the supporting portion and the pressing surface.
Wherein the contact member can be moved by
Connection device. 5. A pipe connection device for connecting a pipe by moving a pipe connection unit in which a plurality of pipes are bound at a predetermined interval in an excavation groove, comprising a frame, a contact member, and a pressing device, The frame has a moving roller that engages with the track laid on the ground, a support that hangs down in the excavation groove, and an auxiliary track, and the contact member can contact each pipe end surface of the pipe connection unit. A holding surface and an auxiliary roller, the abutting member is suspended from the frame into the excavation groove with the auxiliary roller engaged with the auxiliary track, and a pressing device is disposed between the support portion and the pressing surface. A pipe connection device wherein a contact member is movable.