JP2001054215A - Piping apparatus for power cable protection pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly connect a protection pipe unit by providing a positioning part to be inserted into a receptacle of each cable protective pipe to the pressing surface of a pressing plate. SOLUTION: A guide rail 6 consisting of the H-type steel is laid with the flange thereof directed in the horizontal direction to the bottom surface of tunnel over the entire length from a vertical shaft in the departing side. Both side surfaces of the guide rail 6 are held with a pair of guide rollers provided at the bottom surfaces of a truck 1, and a starting vehicle 2 and a pair of right and left wheels 8 are grounded to the arcuate internal wall surface of a tunnel. A cable protective pipe 9 is laid within the tunnel, one end of a reinforced plastic pipe of a constant length of the protective pipe 9 is provided with a receptacle 11, each positioning part 91 of the pressing plate 74 is respectively inserted to the receptacle 11, and the position is corrected in the coaxial condition with a support hole, while a part of the tapered guide surface of the guide member is pushed to the internal circumference of the guide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for laying a protective tube unit in which a power cable protective tube is assembled in multiple rows and multiple stages, in a tunnel.

[0002]

2. Description of the Related Art A protection tube unit is mounted on a trolley, and the trolley is pushed into a tunnel by a starting vehicle equipped with a pressing device. After connecting with the outlet of the protection tube, the starting vehicle is separated from the bogie, and only the starting vehicle is retracted to the shaft at the tunnel entrance. A piping device is known which repeats the same operation, pipes the protective tube unit over the entire length of the tunnel, fills the mortar into the tunnel, and embeds the protective tube unit in the tunnel together with the bogie. See JP-A-5-344621 and JP-A-5-344622).

Further, the carriage is separated from the protection tube unit, and after completion of the piping of all the protection tube units, each carriage is separated from the protection tube unit by remote control, and a wire continuous to each carriage is pulled in advance to carry the carriage. There is also known a piping method for recovering wastewater (see JP-A-9-23524).

[0004] As described above, the method of embedding the truck together with the protection tube unit in the tunnel has a problem that the cost is increased because the truck cannot be reused. For this reason, it is desirable to collect the bogie.
The method disclosed in the above publication requires the same number of bogies as the number of protective tube units connected over the entire length of the tunnel between the shafts, so that the number of bogies is required as many as the number of protective tube units. Although the handling becomes complicated and the truck can be collected, the cost reduction effect is insufficient.

In order to solve such a problem, the number of bogies is reduced by repeatedly using one bogie, and
The applicant of the present application has previously developed a piping device capable of reducing the number of components buried in the mortar together with the protective tube unit, thereby achieving a significant reduction in the cost of piping work for the protective tube and an improvement in work efficiency. Patent application (Japanese Patent Application No. 10-27)
No. 3613).

[0006] The piping apparatus according to the above-mentioned patent application mounts a protection tube unit in which cable protection tubes are assembled in a multi-row and multi-stage manner on a truck, pushes the truck into a tunnel by a starter vehicle, and presses the presser mounted on the starter vehicle. The pressing plate of the device is opposed to the end face on the receptacle side of the protective tube unit, and the pressing device is driven to push out the protective tube unit on the carriage by the pressing plate and connect it to the existing protective tube unit. After the connection, the truck and the starting vehicle are moved back to their original positions.

[0007]

The piping apparatus according to the above-mentioned patent application can attain the intended purpose for the time being, however, the assembling of the protective tube unit is performed manually by an operator. , Is not always the exact sequence,
In particular, there is a problem that the arrangement on the receiving side is likely to be irregular. This is due to the fact that the inlet side is precisely arranged because it is tightened via a pipe pillow, but the receiving side is configured to be inserted with a gap into the support hole of the support plate on the trolley. is there.

[0008] If the receiving port is installed in a tunnel with an uneven position, when the next protective tube unit is connected, the insertion port may not be inserted smoothly, which may significantly impede the work efficiency. .

SUMMARY OF THE INVENTION It is an object of the present invention to forcibly correct the position of the receptacle so that the next connection of the protection tube unit can be performed smoothly.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention mounts a protection tube unit in which cable protection tubes are assembled in a multi-row and multi-stage manner on a bogie, and drives the bogie in a tunnel by a starting vehicle. The pressing plate of the pressing device installed on the truck or the starting vehicle is made to face the receiving side end surface of the protection tube unit, and the pressing device is driven to drive the protection tube unit on the truck by the pressing plate. A power cable protection tube piping device that is extruded and connected to an existing protection tube unit, wherein a positioning portion is provided on a pressing surface of the pressing plate to be inserted into a receptacle of each of the cable protection tubes. It is.

[0011] The insertion side of the protection tube unit is tightened by interposing a pipe pillow between the cable protection tubes, and the reception side of each row of each row of the support plate attached to the bogie. A configuration in which the support holes are inserted with a gap therebetween can be adopted.

[0012] The above-mentioned positioning portion may be provided concentrically with the above-mentioned support hole. Further, the above-mentioned positioning portion can be constituted by a guide member having a tapered guide surface fitted into the inside of the above-mentioned receptacle.
Furthermore, the above-mentioned positioning part can be constituted by an independent member provided with the above-mentioned guide member on an annular substrate.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The piping device of the embodiment is shown in FIG.
As shown in FIG. 2 and FIG. A tunnel 5 is excavated in the ground, and shafts 4 are provided at both ends thereof.

A guide rail 6 made of H-shaped steel is laid on the bottom surface of the vertical shaft 4 on the departure side from the shaft 4 on the departure side, with its flange directed horizontally. Both side surfaces of the guide rail 6 are sandwiched between a pair of guide rollers 7 provided on the bottom surface of the carriage 1 and the starting vehicle 2, and a pair of left and right wheels 8 are grounded on the arc-shaped inner wall surface of the tunnel 5 (FIG. 3). reference).
In the shaft 4, the wheels 8 are mounted on two parallel introduction rails (not shown).

As shown in FIG. 4, the cable protection pipe 9 piped into the tunnel 5 by the above-mentioned piping device is a fixed-size reinforced plastic pipe having a receiving port 11 at one end and an insertion port 12 at the other end. is there. The receiving port 11 has a receiving member 14 fixed to one end outer peripheral surface of the reinforced plastic pipe via a spacer 13, and further covers the receiving member 14 with a cover member 15, and the tip of the cover member 15 protruding from the tip of the receiving member 14. A tapered guide portion 16 is formed so that a distal end side extending from the inner surface to the distal end of the receiving member 14 is provided. A packing 17 sandwiched between the guide portion 16 and the receiving member 14 is adhesively fixed to an inner peripheral surface of the receiving member 14. Is done. A retaining pin 18 is inserted into the rear end of the cover member 15 so as to engage with the rear end surface of the receiving member 14.

As shown by a dashed line in FIG. 4, the insertion port 12 of the other cable protection tube 9 is firmly pressed into the receptacle member 14 while being guided by the above-mentioned guide portion 16. The packing 17 is compressed on the outer peripheral surface of the outlet 12 and seals at the connection.

Before the cable protection tube 9 is mounted on the bogie 1, a predetermined assembling device 19 is installed outside the shaft 4.
(See FIG. 5), the protective tube unit 21 is assembled in multiple rows and multiple stages.

The assembling apparatus 19 includes an assembling jig 22 and an assembling frame 23. The assembling jig 22 is composed of a base 24 corresponding to the size of the protection tube unit 21 and a backing plate 25 fixed to one end of the base 24. The required number of positioning projections 30 of the assembling frame 23 on the base 24, 30 'is provided. The assembling frame 23 includes an end plate 26 erected on a base 24 along the inside of the backing plate 25 and lower frames 27 and 2.
And the end plate 26 has five rows and five rows.
A stepped circular support hole 29 is provided. This support hole 2
Reference numeral 9 denotes a size in which the receptacle 11 of the cable protection tube 9 is inserted and supported with a required gap (see FIG. 3).

At the lower part of both sides of the end plate 26, the end plate 2
An engagement piece 40 (described later) for detachably connecting the vehicle 6 to the carriage 1 is provided.

The lower frame 27 is provided with two stays 38 which are detachably screwed upward and detachably.
Arm portions 31, 31 are provided at both ends of each arm portion.
Are provided with engagement holes 31 ', 31' for engaging with the side frames 28, 28. Further, receiving members 32, 32 are provided on the end plate 26 at the same height as the engaging holes 31 ', 31', and engaging holes 32 ', 32' are provided in each of the receiving members 32, 32. Pins 39 at both ends of the two side frames 28, 28 are removably inserted into these engagement holes 31 ', 32', respectively.

As will be described later, these side frames 28, 28
It is necessary to remove the piping device from the shaft 4 before pushing it into the tunnel 5, but in order to prevent forgetting to remove the piping device, an overhang 33 is provided on one side frame 28, and the overhang 33 is provided outside the overhang 33. Is set so as to interfere with the entrance wall of the tunnel 5.

At the center of the lower frame 27, a pair of engaging arms 34 are vertically suspended so as to swing in the longitudinal direction of the lower frame 27 (see FIG. 9). An open state that opens outward and a closed state that hangs downward by its own weight can be taken. The engaging arm 34 is engaged with the guide rail 6 to prevent the protection tube unit 21 from rising when the mortar is filled in the tunnel 5 as described later. At both ends of the lower surface of the lower frame 27, grounding legs 35 are provided obliquely outward.

In order to position the assembly frame 23 with respect to the assembly jig 22, a positioning hole 3 is formed in the lower surface of the lower frame 27.
6 and a support plate 37 provided at the lower end of the end plate 26.
Are provided with positioning holes 36 '. Positioning hole 3 above
6, 36 ′ are positioning projections 30 on the base 24, respectively.
30 '.

The supporting hole 2 of the end plate 26 of the assembly frame 23
9 are sequentially inserted through the receptacle 11 of the cable protection tube 9 from the lower stage, and the heads are aligned and piled up by applying the tip of the receptacle 11 to the backing plate 25 (see FIG. 6A).
Above the lower frame 27, the pipe pillows 41 are stacked while being interposed therebetween, and the pipe pillows 41 are inserted into the two stays 38.

After stacking in five rows and five stages in this manner, the fastening member 42 is inserted into the upper end of the stay 38 and tightened with the nut 43 (see FIG. 6B). The suspension rings 44 are attached to the upper end of the stay 38 and the upper end of the end plate 26 to complete the assembly of the protection tube unit 21.

Next, the hanging tool 45 is locked to the hanging ring 44,
It is lifted by a crane 46 (see FIG. 1) via the lifting tool 45, the assembly frame 23 and the protection tube unit 21 integrated therewith are separated from the assembly jig 22, and the protection tube unit 21 is hung in the shaft 4. Mounted on the trolley 1.

As shown in FIG. 7, the bogie 1 has two parallel base frames 1a, 1a extending in the front-rear direction, and is fitted into a positioning hole 36 'of the end plate 26 of the assembly frame 23. A pair of positioning projections 47, 47 are provided on the connection frame 1b at the rear end of the bogie, and a pair of positioning projections fitted into the positioning holes 36 (see FIG. 5) of the lower frame 27 at positions near the front end. Part 4
8, 48 are provided on each base frame 1a, 1a.

A pair of fixing pieces 49 sandwiching the locking piece 40 provided at a lower portion of one side of the end plate 26 from both sides thereof.
Are provided on both sides of the cart 1. The end plate 26 is fixed to the carriage 1 by lightly driving the wedge 51 into the wedge holes of the locking piece 40 and the fixing piece 49 (see FIG. 10).

The positioning projection 4 for receiving the lower frame 27 described above.
8 is provided on the elevating plate 52 as shown in FIG. On each base frame 1a of the carriage 1, an elevating jack 53 constituting a vertical moving device 60 is fixed to a support plate 53 ', and the elevating plate 52 is fixed to a vertically movable piston rod 54 of the elevating jack 53. You. The elevating plate 52 is vertically movably inserted into a rectangular hole 59 (see FIGS. 7 and 8) provided in each base frame 1a, and is guided by a guide rod 52 '.

Along the outside of each hole 59, the base frame 1a
A support member 55 that is long in its length direction is attached to the upper surface of the. The support member 55 has a horizontal flat surface 56 on its upper surface.
And an inclined surface 57 which is continuous with the front end of the flat surface 56 and is inclined forward and downward. The height of the flat surface 56 is set so as to be lower by a distance d (see FIG. 8) than the surface of the elevating plate 52 that has received the lower frame 27 as described above. A locking projection 58 is provided at the rear end of the flat surface 56.

The lower frame 27 is located at the highest position in the state of FIG. 8 mounted on the elevating plate 52 as described above.
When the piston rod 54 descends due to the operation of, the piston rod 54 is transferred onto the flat surface 56 of the support member 55 and is supported by the flat surface 56. In addition, as described later, when the carriage 1 retreats after the connection of the protection tube unit 21 is completed, the lower frame 27 moves on the inclined surface 57.

The lower frame 27 is provided with a pair of grounding legs 35 as described above. When the lower frame 27 is placed on the elevating plate 52 as described above, the grounding legs 35 are attached to the inner wall of the tunnel 5. 9 (b), and is located at a position B slightly closer to the flat surface 56 when the jack 53 moves down. Further, the lower frame 27
Is relatively moved on the inclined surface 57 and descends, it becomes the lowest position C in the middle of the descending, and contacts the inner surface of the tunnel 5.

[0033] the front end surface of the connecting frame 1c ₁ provided in the middle portion of the carriage 1 of the base frame 1a, opening member 61 is projected forward direction (see FIG. 7), the progress of its front side (carriage 1 Direction end) is a free end. The release member 61 has a triangular mountain shape in cross section, and the inner sides of the engagement arm 34 are engaged with both sides thereof to open the engagement arm 34 (see FIG. 9).

The protection tube unit 2 integrated with the lower frame 27 is also provided.
When the carriage 1 retreats with respect to 1, the engaging arm 34 comes off the free end of the opening member 61 during the retreat, and the engaging arm 34 hangs down by its own weight and engages with the guide rail 6 (see FIG. 9). Dash-dot line).

Further, the bogie 1 is provided with a braking device 62 as a reaction force support mechanism which opposes a pressing force of a pressing device 84 described later (see FIG. 7). As shown in FIG. 11, the braking device 62 uses a pin 64 with a fixed inclined surface with respect to the guide rail 6 so that a pair of metal friction members 63 sandwiching both side surfaces of the guide rail 6 face the rear of the bogie 1. swingably attached to the connecting frame 1c ₂ in the horizontal plane. Pin 6 above
The sector gears 68, 68 are respectively attached to the four, and the sector gears 68, 68 mesh with each other.

On the other hand, the piston rod 67 of the hydraulic cylinder 66 is connected to the eccentric position of the sector gear 68 in FIG.
reference). When the hydraulic cylinder 66 is operated with the friction member 63 separated from the guide rail 6, the sector gears 68, 6
8, the friction member 63 is interlocked, and is pressed against both side surfaces of the guide rail 6 with a required pressing force as shown by a dashed line to brake the carriage 1 and to strongly brake the guide rail 6
To lock.

As shown in FIG. 7, an auxiliary frame 71 is slidably housed in a sheath tube 1d provided outside each base frame 1a of the carriage 1 so as to correspond to the length of the cable protection tube 9. Has become. Two CCD cameras 72, 72 ′ are attached to the tip of one auxiliary frame 71 upward and forward, and the same CCD camera 7 is attached to the tip of the other auxiliary frame 71.
2 is mounted upward, and a headlight 70 is mounted alongside the camera 72. Each of the above cameras 72, 7
2 'is for photographing the state of the piping work and transmitting it to the control room.

A guide device 75 for a pressing plate 74 is fixed to the upper surface of the rear end of the carriage 1 as shown in FIG. The guide device 75 includes a support frame 76 (FIG. 10)
) And guide rods 77 are horizontally fixed to a total of four positions of the support frame 76 in the upper, lower, left, and right directions, and rods 78 are slidably inserted into the respective guide cylinders 77, and between the support frame 76 and the protection tube unit 21. The arranged pressing plate 74 is connected to each rod 78.
Is fixed to the tip of The pressing plate 74 is connected to the protection tube unit 21.
At an appropriate distance from the rear end face (on the receiving port 11 side).

Further, the rear end face of the pressing plate 74 (starting wheel 2)
A joint member 79 is provided at the center of the side surface (i.e., the side surface), that is, at an intermediate portion of the four rods 78, and a female joint 81 is provided at the rear end of the joint member 79.

The starting vehicle 2 is connected to the rear end of the bogie 1 by a connecting pin 82, and a support base 83 is provided on the upper surface of the front end. A pressing device 84 composed of a hydraulic cylinder is horizontally mounted on the rear surface of the support base 83, and a male joint 86 having a spherical surface is provided at the tip of the piston rod 85. 8
7.

When the bogie 1 and the starting vehicle 2 are bent in the horizontal or vertical direction according to the curve of the tunnel 5, the universal joint 87 changes the direction of force transmission in the bending direction and pushes the pressing device 84. The pressure is transmitted to the pressing plate 74.

A driving device 88 including a motor, a hydraulic pump, and the like is installed on the starting vehicle 2 (see FIG. 2), and a storage battery 89 is mounted on the driving device 88. As shown in FIG. 1, the starting vehicle 2 is also provided with a similar braking device that works in conjunction with the braking device 62 of the bogie 1. The starting vehicle 2 is provided with communication equipment (not shown) for communicating with the control room, and a worker in the control room remotely controls the driving device 88 and other various devices through the communication equipment. CCD cameras 72, 7
Image signals 2 ′ and 96 (described later) are received in the control room and displayed on a monitor screen.

On the pressing surface of the pressing plate 74, there are provided five rows and five stages of positioning portions 91 which face the supporting holes 29 of the end plate 26. As shown in FIG. 12, the positioning portion 91 has radially rib-shaped guide members 93 provided at equal intervals on the front surface of an annular substrate 92 which is an independent member. Each guide member 93 is provided with a tapered guide surface 94 at the outer edge thereof, the end on the substrate 92 side is the widest, and the outer end of each guide member 93 is on an imaginary circle. The positioning portion 91 is integrated with the pressing plate 74 by fixing the substrate 92 with bolts 97.

As shown in FIG. 14, the guide surface 94 is formed so as to have an angle larger than the taper of the guide portion 16 of the receiving port 11, and the outer end of each guide member 93 is formed on the inner peripheral surface of the guide portion 16. Inscribe in

As shown in FIG. 12 (c), the guide member forming the positioning portion 91 is replaced with the rib-shaped guide member 93, as shown in FIG.
A frustoconical guide member 93 'with 4' can also be used.

A sight hole 95 is provided at the center of a positioning portion 91 provided at each of the four corners of the pressing plate 74, and a CCD camera 96 is provided at a rear portion thereof. This camera 96
Through the inside of the cable protection tube 9, the socket 11 of the existing cable protection unit 21 ′ (see FIG. 2) to be connected can be seen.

FIGS. 13A and 13B show that the receptacle 11 of the cable protection tube 9 inserted into the support hole 29 of the end plate 26 is not necessarily coaxial with the support hole 29. That is, the protection tube unit 21 assembled as described above is
The insertion port 12 side is tightened by a stay 38 and a nut 43 via a pipe pillow 41, and the position thereof is accurate. However, the reception port 11 side is inserted into the support hole 29 with a gap, so that accurate positioning is performed. It is difficult.

Therefore, when the end face of the receptacle 11 is pressed by the pressing plate 74, each of the positioning portions 91 is opposed to the receptacle 1.
1 and forcibly press the tapered guide surfaces 94 and 94 ′ of the guide members 93 and 93 ′ so that the position is concentric with the support hole 29. (See FIG. 14).

It should be noted that, once corrected, each cable protection tube 9 is held by the friction of the pipe pillow 41, so that even if the pressing plate 74 retreats and the positioning portion 91 comes out of the receiving port as will be described later, the corrected cable protection tube 9 can be used. Maintain state.

The piping apparatus according to the embodiment is as described above. Next, a method for piping the protective tube unit 21 in the tunnel 5 using the piping apparatus will be described.

The steps of the piping method are roughly divided into a preparation step, an assembling step, a mounting step, a connecting step, and a retreating step in the order of steps.

The preparation step is a step of manually assembling one protection tube unit at the end of the tunnel 5 on the reaching shaft side. The protection tube unit assembled by hand is
It is assembled with sufficient stability and with the required positional accuracy to withstand the pressing force in the front-rear direction so as to serve as an anchor in the subsequent steps.

In the assembling step, the protective tube unit 21 is assembled outside the shaft 4 in the above-described manner using the assembling apparatus 19 shown in FIG.

In the mounting step, as shown in FIG.
The assembling frame 23 and the protective tube unit 21 integrated therewith are suspended using the crane 46 in the shaft 4, mounted on the bogie 1, and the lower frame 27 is supported by the elevating jack 53 on the bogie 1. At the same time, the end plate 26 is connected to the carriage 1 by driving a wedge 51 into a fitting portion between the locking piece 40 and the fixing piece 49 (see FIG. 10). Also, the both side frames 28, 28 of the assembly frame 23 are removed.

The connection step is performed by a worker in the control room by remote control while watching the monitor screen. That is, the starting vehicle 2 is driven to push the bogie 1 into the tunnel 5 (FIG. 2).
(See FIG. 15 (a)), with the insertion port 12 of each protection tube 9 of the protection tube unit 21 on the carriage 1 facing the opening range of the guide portion 16 of the receptacle 11 of the existing protection tube unit 21. Then, the carriage 1 stops moving forward. At this time, socket 1
The center line 1 is located at the reference height H, and the center line of the outlet 12 is located at a position slightly higher than this by a dimension D ₁ .

[0056] lowers the piston rod 54 of the lifting jack 53, when placing the lower frame 27 on the flat surface 56 of the support member 55, the spigot 12 is lowered by the dimension D _2, the dimension from the reference height H D _{At a} position higher by ₃ (FIG. 15B)
reference). At this time, the grounding leg 35 is at the position B shown in FIG. 9B, and no contact with the tunnel 5 has occurred.

Therefore, the braking device 6 for the truck 1 and the starting vehicle 2
After the lock 2 is locked to the guide rail 6 to prepare for the reaction force support, the pressing device 84 on the starting vehicle 2 is operated, and the positioning portion 91 of the pressing plate 74 is inserted into each receiving port 11 (see FIG. 14). ), The position of the receptacle 11 is corrected. Further, when the end face of the receptacle 11 is pushed by the pressing plate 74, the protection tube unit 21 moves forward while coming out of the support hole 29 of the end plate 26.

When the camera is further advanced while being monitored by the aforementioned CCD cameras 72, 72 ', 96, FIG.
As shown by the dashed line in FIG.
Pressed against the inner surface of the first guide portion 16, lifting forces the socket 11 side at the force only D _3, to match both the center line (see FIG. 15 (c)). The outlet 12 is pushed into the receptacle 11 by a predetermined depth. The timing of stopping the pushing is determined by the operator while watching the position of the mark line 98 on the outlet 12 side on the monitor screen.

The above connection is made simultaneously for all the protection tubes 9 of the protection tube unit 21. However, a slight displacement between the insertion port 12 side and the receiving port 11 side is caused by the maximum diameter of the tapered guide portion 16 of the receiving port 11. It can be absorbed by the guide action of the guide portion 16.

When the connection is completed as described above, the process proceeds to the retreating step. In the retreating step, the cart 1 and the starting car 2 are retracted after releasing the lock of the braking device 62. At this time, since the protection tube 9 of the protection tube unit 21 connected in the previous step has a considerably strong coupling resistance between the receptacle 11 and the outlet 12, even if the carriage 1 is retracted without taking special measures. The protection tube unit 21 mounted thereon does not fall out of the existing protection tube unit 21.

As the carriage 1 retreats, the lower frame 27 slides on the flat surface 56 of the support member 55, and gradually descends while moving on the inclined surface 57. On the way, the landing leg 35
(Refer to position C in FIG. 9B).
The load of the protection tube unit 21 is supported by the inner surface of the tunnel 5, and the carriage 1 moves backward together with the starting vehicle 2. In the initial stage of retreat, the positioning portion 91 comes out of the receiving port 11 of each protective tube 9, but as described above, each receiving port 11 keeps the state after the correction, and comes out of the support hole 29 while maintaining it.

When the outlet 12 side is lowered by the grounding of the grounding leg 35, and the receptacle 11 comes out of the support hole 29, the height of the connecting portion is lowered by D ₃ , and the center line of the two is set to the reference height H. (See FIG. 15D).

Since the engaging arm 34 of the lower frame 27 is disengaged from the opening member 61 during the retreat of the carriage 1, the engaging arm 34 closes and engages with the guide rail 6 (see FIG. 17).

FIGS. 16 and 17 show the inside of the tunnel 5 in which the piping has been completed in this way. Tunnel 5
Inside the protection tube unit 21, the lower frame 27, the stay 3
8, the pipe pillow 41, the fastening member 42, and the nut 43 are left, and the end plate 26 retreats to the shaft 4 while being mounted on the truck 1 and is reused together with the truck 1.

The subsequent operation is to fill the mortar into the tunnel 5 through a pipe 99 provided in advance on the ceiling of the tunnel 5. At this time, the protection tube unit 21 is integrated with the lower frame 27 and the stay 38. To the guide rail 6 by the engagement arm 34 of the lower frame 27.
Is prevented from floating and is buried at a predetermined set position.

[0066]

Since the present invention is as described above, one truck can be used repeatedly, and the components remaining in the tunnel are the lower frame of the assembling apparatus, the stay and the fastening member integrated therewith. Therefore, the cost of piping work can be significantly reduced as compared with the case where the entire truck is left and the case where all the carts for each protection tube unit are collected.

In addition, before connecting the cable protection tubes, the positions of the receptacles of the respective cable protection tubes constituting the protection tube unit are set as follows.
Since the correction can be performed by the positioning portion provided on the pressing plate of the pressing device, the protection tube units can be connected to each other smoothly, and the working efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a shaft part.

FIG. 2 is a sectional view of the inside of a tunnel.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG. 2;

FIG. 4 is a partially omitted sectional view of a cable protection tube.

FIG. 5 is a partially omitted exploded perspective view of the assembling apparatus.

6 (a) is a front view when the protection tube unit is suspended, and FIG. 6 (b) is a partially enlarged perspective sectional view of the same.

FIG. 7 is a plan view of a cart portion.

FIG. 8 is a partially enlarged cross-sectional view on a trolley.

9A is a cross-sectional view taken along line XX in FIG. 8; FIG. 9B is a partially enlarged view of FIG.

FIG. 10 is a cross-sectional view of a connecting portion between the truck and the starting vehicle.

FIG. 11 is a plan view of a bogie braking device.

12A is a front view of a positioning unit, FIG. 12B is a side view of the same, and FIG. 12C is a vertical sectional side view showing another example of the positioning unit.

13A is a cross-sectional view of a pressing plate portion. FIG. 13B is a cross-sectional view taken along line bb in FIG.

FIG. 14 is a sectional view of a socket portion.

FIGS. 15A to 15D are cross-sectional views showing a connection state between an outlet and a receptacle.

FIG. 16 is a sectional view of a tunnel in a connection completed state.

FIG. 17 is a sectional view taken along line YY of FIG. 16;

[Explanation of symbols]

1 bogie 1a base frame 1b connecting frame 1c _1, 1c _2, 1c ₃ connecting frame 1d sheath tube 2 activation wheel 4 Shaft 5 tunnel 6 the guide rail 7 guide rollers 8 wheels 9 cable protection tube 11 socket 12 Sashi port 13 spacer 14 receptacle member Reference Signs List 15 cover member 16 guide portion 17 packing 18 retaining pin 19 assembling device 21, 21 'protective tube unit 22 assembling jig 23 assembling frame 24 base 25 supporting plate 26 end plate 27 lower frame 28 side frame 29 supporting hole 30, 30 'Positioning protrusion 31 Arm part 31' Engagement hole 32 Receiving member 32 'Engagement hole 33 Overhang part 34 Engagement arm 35 Grounding leg 36, 36' Positioning hole 37 Support plate 38 Stay 39 Pin 40 Locking piece 41 Pipe pillow 42 Tightening member 43 Nut 44 Hanging ring 45 Hanging tool 46 Crane 47 Positioning protrusion 48 Positioning protrusion 4 Fixing piece 51 Wedge 52 Lifting plate 52 'Guide rod 53 Lifting jack 53' Support plate 54 Piston rod 55 Supporting member 56 Flat surface 57 Inclined surface 58 Locking projection 59 Hole 60 Moving device 61 Opening member 62 Braking device 63 Friction member 64 Pin 66 Hydraulic cylinder 67 Piston rod 68 Sector gear 70 Headlight 71 Auxiliary frame 72, 72 'CCD camera 74 Press plate 75 Guide device 76 Support frame 77 Guide cylinder 78 Rod 79 Joint member 81 Female joint 82 Connecting pin 83 Support stand 84 Press Device 85 Piston rod 86 Male joint 87 Universal joint 88 Driving device 89 Storage battery 91 Positioning part 92 Substrate 93, 93 'Guide member 94, 94' Guide surface 95 Viewing hole 96 CCD camera 97 Bolt 98 Marking line 99 Piping

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akio Horiguchi 3-3-22 Nakanoshima, Kita-ku, Osaka-shi Kansai Electric Power Co., Inc. (72) Inventor Toshiho Fukuya 1-112-19 Kitahorie, Nishi-ku, Osaka-shi Inside Kurimoto Iron Works, Ltd. (72) Inventor Yasufumi Hayashi 1-12-19 Kitahorie, Nishi-ku, Osaka City Inside Kurimoto Iron Works, Ltd. (72) Inventor Tohru Miyazaki 1-112-19, Kitahorie, Nishi-ku, Osaka City Inside Kurimoto Ironworks Co., Ltd. (72) Inventor Hiroyuki Nokubo 1-12-19 Kitahorie, Nishi-ku, Osaka City Inside Kurimoto Ironworks Co., Ltd. (72) Toshiki Oka 1-1-12-19 Kitahorie, Nishi-ku, Osaka City No. Inside Kurimoto Iron Works, Ltd. (72) Yuichiro Yoshida, Inventor 1-12-19 Kitahorie, Nishi-ku, Osaka City Inside Kurimoto Iron Works, Ltd. (72) Inventor Koichi Ito, 1-112 Kitahorie, Nishi-ku, Osaka City No. 19 Stock Association Inside Kurimoto Iron Works (72) Inventor Yoshitsugu Fukuoka 1-12-19 Kitahorie, Nishi-ku, Osaka-shi F-term in Kurimoto Chemical Industry Co., Ltd. 5G369 AA19 BA04 BA05 DC09 EA04

Claims (5)

[Claims] 1. A protection tube unit comprising a plurality of cable protection tubes assembled in multiple rows and multiple stages is mounted on a truck, and the truck is pushed into a tunnel by a starting vehicle, and a pressing plate of a pressing device installed on the truck or the starting vehicle is pushed. A power cable protection tube which is made to face the receiving side end surface of the protection tube unit, drives the pressing device to push out the protection tube unit on the carriage by the pressing plate, and connects to the existing protection tube unit. The piping device for an electric power cable protection pipe according to any one of claims 1 to 3, wherein a positioning portion is provided on a pressing surface of the pressing plate to be inserted into a receptacle of each of the cable protection pipes. 2. The insertion side of the protection tube unit is tightened by interposing a pipe pillow between the respective cable protection tubes, and the receiving side of each row of the support plate attached to the carriage. The piping device for a power cable protection tube according to claim 1, wherein the power cable protection tube is inserted into the support hole of the step with a gap. 3. The piping device for a power cable protection tube according to claim 2, wherein the positioning portion is provided concentrically with the support hole. 4. The power cable protection according to claim 1, wherein the positioning portion is formed by a guide member having a tapered guide surface fitted into the receptacle. Pipe plumbing equipment. 5. The piping device for a power cable protection tube according to claim 4, wherein the positioning portion is formed by an independent member provided with the guide member on an annular substrate.