JP3213264B2 - Power cable protection tube unit assembly equipment - 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 for assembling a protection tube unit used in a work of piping a protection tube unit in which a power cable protection tube is assembled in a multi-row and multi-stage manner 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 starter equipped with a pressing device. In the tunnel, a receiving port of each protection tube of an existing protection tube unit and each protection on the trolley. After connecting the pipe outlet, the bogie is disconnected from the starting vehicle, only the starting vehicle is retracted to the shaft at the tunnel entrance, and the same operation is repeated to pipe the protective tube unit over the entire length of the tunnel, and then mortar is inserted into the tunnel. A piping device and a piping method in which a protective tube unit is filled and buried in a tunnel together with a bogie are conventionally known (JP-A-5-344621, JP-A-5-344622, JP-A-6-280474). Gazette).

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 cart together with the protective tube unit in the tunnel has a problem that the cart becomes expensive because the cart cannot be reused.
For this reason, it is desirable to collect the unit trolley,
The method disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 9-23524 is
Since the same number of bogies as the number of protective tube units connected over the entire length of the tunnel shaft are required, the number of bogies is required as many as the number of protective tube units, the handling becomes complicated, and the bogies are collected. Although this is possible, the cost reduction effect is insufficient.

[0005] Therefore, the present invention provides a cable protection tube with a large number.
Protective tube unit assembled in multiple rows
In the work of plumbing in the tunnel by using, one truck is used repeatedly to reduce the number of trucks,
An object of the present invention is to provide an apparatus for assembling a protective tube unit necessary to reduce the number of parts buried in a mortar together with a protective tube unit, to significantly reduce the cost of piping work for a protective tube and to improve work efficiency. And

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a cable protection tube having multiple rows and multiple stages.
The protective tube unit assembled in the unit is mounted on the unit cart
And push it into the tunnel by the starting vehicle,
Power cable connecting the unit to the existing protection tube unit
Protection of power cables used in piping methods of protection unit
In an assembling apparatus for a pipe unit, an assembling jig having an abutment plate erected at one end of a base and an assembling frame separably mounted on the base are provided. An end plate erected at a required interval on the front surface of the backing plate to support a receiving end of the protection tube unit;
At a position closer to the required distance from the end plate,
A lower frame integrated with the protection tube unit and supporting the lower surface thereof, and a detachable side frame connecting the end plate and the lower frame; and a pair of grounding legs on the lower surface of the lower frame. Is provided.

[0007] The end plate has a multi-row, multi-stage support hole into which receptacles of the power cable protection tubes constituting the protection tube unit are inserted, and the lower frame penetrates a pipe pillow of the protection tube unit. The end plate and the upper end of the stay may be provided with a suspension ring.

Further, a configuration may be adopted in which a side frame of the assembly frame is provided with a projecting portion which interferes with a tunnel entrance for piping the protection tube unit.

The apparatus for assembling the protection tube unit having the above construction is installed outside the shaft, and the end of the cable protection tube on the receiving side is supported by an end plate, and the cable protection tube is placed on a lower frame. The protection tube unit is constructed by assembling the cable protection tubes in multiple rows and multiple stages with the tube pillow interposed, and this is integrated with the lower frame by an appropriate fastener.

The above-mentioned protective tube unit, the lower frame integral therewith, the end plate supporting the end on the receiving port side, and the side frame connecting the end plate and the lower frame are lifted by a crane or the like and separated from the assembling jig. And hang it on a unit truck in a shaft.

After the side frame is removed, the unit truck is pushed into the tunnel by a starter equipped with a pressing device, and the insertion port of the protection tube unit on the unit truck is inserted into the receiving port of the existing protection tube unit in the tunnel. Face. The protection tube unit is pushed forward by the pressing device, the end on the receiving port side is removed from the end plate, the connection between the receiving port and the insertion port is performed, and the protection tube unit and the lower frame on the unit cart are lowered into the tunnel. . After that, the unit truck is retracted to the shaft with the end plate mounted.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the piping device of the embodiment includes a unit truck 1, a driving car 2, a power car 3
Consisting of A vehicle in which the driving vehicle 2 and the power supply vehicle 3 are integrated is referred to as a starting vehicle. Both side surfaces of the guide rail 6 made of H-shaped steel laid on the bottom of the tunnel 5 from the shaft 4 to the entire length thereof are fixed by a pair of guide rollers 7 provided on the bottom surfaces of the unit truck 1, the driving vehicle 2, and the power vehicle 3. While sandwiching, tunnel 5
The pair of left and right wheels 8 is grounded to the arc-shaped inner wall surface of FIG.
reference). In the part of the shaft 4, as shown in FIG. 4, two parallel introduction rails 10 having inclined surfaces along the inner wall of the tunnel 5 are provided on both sides of the guide rail 6, and the wheels 8 are mounted thereon. I have.

As shown in FIG. 5, the cable protection pipe 9 piped into the tunnel 5 by the above-mentioned piping device is a fixed-length 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 guide portion 16 extending from the inner surface to the distal end of the receptacle member 14 is provided, and the guide portion 16 is formed in a tapered shape in which the distal end side expands. The packing 17 sandwiched between the guide portion 16 and the receiving member 14
Adhesively fixed to the inner peripheral surface of the The cover member 15
A retaining pin 18 is inserted into the rear end of the receiving member 14 so as to engage with the rear end face of the receiving member 14.

The above cable protection tube 9 is provided with a spacer 13
After a tube provided with the receiving member 14 is manufactured, a separately formed cover member 15 is attached. The cover member 15 is a molded article of a thermoplastic synthetic resin.

As shown by a dashed line in FIG. 5, the outlet 12 of the other cable protection tube 9 is firmly pressed into the receiving member 14 while being guided by the guide portion 16 described above. 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 unit truck 1, the cable protection tube 9 is assembled in a multi-row and multi-stage manner outside the shaft 4 by the assembling apparatus 19 shown in FIG. 6, and the protection tube unit 21 (FIGS. 1 and 2). , FIG. 19 and FIG. 20).

The assembling apparatus 19 comprises an assembling jig 22 and an assembling frame 23 as shown in FIG. 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 is an end plate 2 erected on a base 24 along the inside of the backing plate 25.
6, a lower frame 27, and two side frames 28, 28. The end plate 26 is provided with circular support holes 29 in five rows and five stages. The support hole 29 has such a size that the receptacle 11 of the cable protection tube 9 is inserted and supported with a required margin (see FIG. 3).

The lower end plate 26 is provided on both sides of the end plate 26.
Is provided with a locking piece 40 for detachably connecting to the unit truck 1 described later (see FIGS. 3, 6, and 10).

Further, as shown in FIG.
A book stay 38 is vertically screwed up and down so as to be detachable, and arms 31, 31 at both ends of a lower frame 27, and engagement holes of the arms 31, 31 with the side frames 28, 28. 31 ', 3
1 'are provided, and receiving members 32, 32 (see FIG. 6) are provided on the end plate 26 at the same height as the engaging holes 31', 31 '.
Are provided in each of the receiving members 32, 32.
2 'is provided. 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 (see FIG. 4). When the overhang 33 interferes with the entrance of the tunnel 5, the overhang 33
The sensor provided in the system operates to generate an alarm to notify the worker that he / she has forgotten to remove it.

As shown in FIG. 7, a pair of engaging arms 34 are vertically suspended by a pin 50 in the width direction of the lower frame 27 at the center of the lower frame 27. Arm 34
Is open to the outside and closed by the weight of itself. 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 above-mentioned assembling frame 23 with respect to the assembling jig 22, a positioning hole 3 is formed in the lower surface of the lower frame 27.
6 are provided (see FIG. 7), and a positioning plate 36 'is provided in a support plate 37 provided at the lower end of the end plate 26 (see FIG. 6). The above-mentioned positioning holes 36 and 36 ′ are respectively mounted on the base 2.
4 on the positioning protrusions 30 and 30 ′.

The support hole 2 in 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 bottom, and the leading ends of the receptacles 11 are applied to the abutment plates 25 to stack the heads together (see FIG. 8A).
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 5 rows and 5 tiers in this way, the stay 38
A fastening member 42 is inserted into the upper end of the nut and fastened with a nut 43 (see FIG. 8B). 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 member 45 is locked to the hanging ring 44,
The assembling frame 23 and the protection tube unit 21 integrated therewith are suspended by the crane 46 (see FIG. 1) via the suspending device 45 into the shaft 4 and mounted on the unit truck 1.

As shown in FIG. 9, the unit truck 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 the lower frame 27 is located at a position close to the front end.
A pair of positioning projections 48 fitted into the positioning holes 36 of
48 are provided on each base frame 1a, 1a.

A pair of fixing pieces 49 sandwiching the locking pieces 40 provided at the lower part of one side of the end plate 26 from both sides thereof are provided on both side faces of the unit truck 1 (FIGS. 9 and 10).
See FIG. 11). The end plate 26 is fixed to the unit truck 1 by lightly driving the wedge 51 into the wedge holes of the locking piece 40 and the fixing piece 49.

The positioning projection 4 for receiving the lower frame 27 described above.
8 is provided on a receiving plate 52 as shown in FIGS. 12 and 13, and the receiving plate 52 is fixed to a piston rod 54 which can be moved up and down of a jack 53 fixed to each base frame 1a of the unit truck 1.

Each base frame 1a is approached to the above-mentioned jack 53.
A support member 55 that is long in its length direction (moving direction)
Is attached. The support member 55 has a horizontal flat surface 56 on its upper surface, and an inclined surface 57 that is continuous with the front end of the flat surface 56 and that is inclined forward and downward. As described above, the height of the flat surface 56 is set so as to be at a position lower than the surface of the receiving plate 52 receiving the lower frame 27 by a slight distance d (see FIG. 12).

The lower frame 27 is at the highest position in the state shown in FIGS. 12 and 13 mounted on the receiving plate 52 as described above, and when the piston rod 54 is lowered by the operation of the jack 53, the supporting member 55 as shown in FIG. And is supported by the flat surface 56. When the unit truck 1 retreats after connection of the protection tube unit 21 is completed as described later, the lower frame 27 moves on the inclined surface 57 as shown in FIGS.

The lower frame 27 is provided with the pair of grounding legs 35 as described above, but when the lower frame 27 is placed on the receiving plate 52 as described above, the grounding legs 35 are attached to the inner wall of the tunnel 5. At the position A (see FIG. 13B) farthest from
In the state shown in FIG. 14 in which the jack 53 is placed on the flat surface 56 by the lowering of the jack 53, the position is slightly closer to the position B. Further, as shown in FIG. 15, when the lower frame 27 relatively moves on the inclined surface 57 and descends, it becomes the lowest position C in the middle thereof, and contacts the inner surface of the tunnel 5.

An opening member 61 projects forward from a front end face of a connecting frame 1c provided at an intermediate portion of the base frame 1a of the unit truck 1 (see FIG. 9), and its front end side (unit truck (1) ) Is the free end.
The opening member 61 has a triangular mountain shape in cross section, and each inner side of the engaging arm 34 engages with both sides thereof.
4 is opened (see FIGS. 13 and 14). In addition, lower frame 2
Unit truck 1 for protective tube unit 21 integral with
Is retracted, the engaging arm 34 is disengaged from 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. 15).

Further, the unit truck 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. 9). The braking device 62 is shown in FIG.
As shown in FIG. 6, a pin 64 having a certain inclined surface with respect to the guide rail 6 such that a pair of metal friction members 63 sandwiching both side surfaces of the guide rail 6 face the rear of the unit truck 1.
, So that it can swing in a horizontal plane. Sector gears 68 are attached to the pins 64, respectively, and the sector gears 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. When the hydraulic cylinder 66 is operated while the friction member 63 is separated from the guide rail 6 as shown in FIG.
The friction member 63 is interlocked via 8, 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 unit truck 1 and lock it by strongly braking.

As shown in FIGS. 9 and 13, an auxiliary frame 71 is slidably accommodated in a sheath tube 1d provided outside each base frame 1a of the unit carriage 1, and has a length corresponding to the length of the cable protection tube 9. It can be adapted to. Two CCD cameras 72, 72 ′ are mounted upward and forward at the tip of one auxiliary frame 71, and a similar CCD camera 72 is mounted upward at the tip of the other auxiliary frame 71.
A headlight 70 is attached alongside the camera 72. Each of the above cameras 72 and 72 ′ shoots a picture of the plumbing work,
This is transmitted to the control room.

On the upper surface of the rear end of the unit cart 1, FIG.
As shown in FIG. 1, the guide device 75 of the pressing plate 74 is fixed. The guide device 75 has a support frame 76 erected and fixed on the unit carriage 1, and guide cylinders 77 are horizontally fixed to a total of four places of upper, lower, left and right of the support frame 76, and a rod 78 is slidable on each guide cylinder 77. The pressing plate 74 inserted between the support frame 76 and the protection tube unit 21 is fixed to the tip of each rod 78. The pressing plate 74 faces the rear end surface of the protection tube unit 21 (at the receiving port 11 side) at an appropriate interval.

The rear end face of the pressing plate 74 (drive wheel 2)
A joint member 79 is provided at the center of the side surface (i.e., the side surface), that is, 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 driving wheel 2 is connected to the rear end of the unit truck 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. 87.

When the unit truck 1 and the drive train 2 are bent in the horizontal or vertical direction in accordance with the curve of the tunnel 5, the universal joint 87 changes the direction of force transmission in the bending direction of the pressing device 84. The pressing force is transmitted to the pressing plate 74.

A driving device 88 including a motor, a hydraulic pump and the like is installed in the driving vehicle 2 (see FIG. 2), and a braking device 62 (the same mechanism as that of the unit truck 1; 16 (see FIG. 16).

The power vehicle 3 has a storage battery 89 for driving the driving device 88, and is detachably connected to the rear end of the driving vehicle 2 by connecting pins 91 (see FIG. 17). The reason why the power supply vehicle 3 is detachably connected is for convenience when the power supply vehicle 3 is carried into the shaft 4. In this case, there is a risk that only the power supply vehicle 3 moves away from the driving vehicle 2 by itself. For this purpose, the following lock device 96 is provided.

That is, like the braking device 62, the locking device 96 is a pair of locking members 9 that sandwich the guide rail 6.
2 and sector gears 93, 93, and two parallel detection rods 94 protruding from the front end face of the power supply vehicle 3 are provided so as to be able to move forward and backward. The arm is connected to one sector gear 93 by a pin 95 '. As a result, the sector gears 93, 93 are linked in accordance with the movement of the detection rod 94. In addition, connecting bar 9
The lock member 92 is urged in the direction of pressing the guide rail 6 by interposing a spring 97 between the first sector gear 5 and the one sector gear 93. When the detection rod 94 is pushed back by the driving vehicle 2 (see the solid line), the lock member 92 separates from the guide rail 6 and is normally used in that state. When the power-supply vehicle 3 is separated from the driving vehicle 2 for some reason, the detection rod 94 is protruded by the force of the spring 97 (see the dashed line), and the lock member 92 is pressed by the guide rail 6 to lock.

A handle 98 as a manual operation device of the lock device 96 and a connecting rod 99 connected thereto.
And a lever 100 is fixed to one of the sector gears 93.
Is connected to one end of the spring 101, thereby
Further, the lock member 92 is urged in the lock direction via the sector gear 93. By operating the handle 98, the locking device 96 can be turned on and off.

The power supply car 3 is provided with a communication facility 102 for communicating with the control room (see FIG. 2).
The operator in the control room remotely controls the driving device 88 and various other devices through the device 02. CCD camera 72,
The image signal 72 'is received by the control room and displayed on the monitor screen.

The piping apparatus according to the embodiment is as described above. Next, a method of 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 step sequence and include a preparation step, an assembling step, a mounting step, a connecting step, and a retreating step. 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 protection 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 into the shaft 4, mounted on the unit truck 1, and the lower frame 27 is supported by the jack 53 on the unit truck 1. 52, and the wedge 51 is driven into the fitting portion between the locking piece 40 and the fixing piece 49 to connect the end plate 26 to the unit truck 1 (FIGS. 10 and 11).
reference). Also, the both side frames 28, 28 of the assembly frame 23 are removed.

The connection step is performed by the operator in the control room by remote control while watching the monitor screen. That is, the driving vehicle 2 is driven by the power of the power vehicle 3,
The unit truck 1 is pushed into the tunnel 5 together with the driving vehicle 2 (see FIG. 2), and the protection tube unit 2 on the unit truck 1 is moved.
1. Insert the inlet 12 of each protection tube 9 into the existing protection tube unit 2
The advancing of the unit truck 1 is stopped so as to reach within the opening range of the guide portion 16 of the receptacle 11 (FIG. 18A).
reference). At this time, the outlet 1
The center line of _{No. 2} has a slight dimension D _{1 as} shown in FIG.
Only in the high position. Assuming that the predetermined reference height is H, the center line of the receptacle 11 is at the position of the reference height H at this time.

[0049] The piston rod 54 of the jack 53 is lowered, 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 ₃ (See FIG. 18B). At this time, the grounding leg 35 is at the position B shown in FIG. 13B, and no contact with the tunnel 5 has occurred.

Then, after the braking device 62 of the unit truck 1 and the driving vehicle 2 is locked to the guide rail 6 to prepare for the reaction force support, the pressing device 84 on the driving vehicle 2 is operated to press the pressing plate 74. When the end face of the protection tube unit 21 on the receiving port 11 side is pushed by this, the protection tube unit 21 moves forward while coming out of the support hole 29 of the end plate 26, and is pressed against the inner surface of the guide portion 16 (the dashed line in FIG. 18B). reference),
The force forcibly lift the receptacle 11 side by D _3, the match both the center line (see FIG. 18 (c)). The outlet 12 is pushed into the receptacle 11 by a predetermined depth. The timing for stopping the pushing is determined by the operator while watching the position of the mark line 103 on the outlet 12 side on the monitor screen.

The above connection is made simultaneously with respect to all the protection tubes 9 of the protection tube unit 21. However, a slight displacement between the insertion port 12 side and the reception port 11 side is caused by the maximum diameter of the tapered guide portion 16 of the reception 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, after the lock of the braking device 62 is released, the unit truck 1, the driving car 2, and the power supply car 3 are retreated. At this time, the protection tube unit 2 connected in the previous process
Since each of the protective tubes 9 has a very strong coupling resistance between the receptacle 11 and the outlet 12, even if the unit carriage 1 is retracted without taking any special measures, the protective tube unit 21 mounted on the unit can be retreated. Does not fall out of the existing protection tube unit 21. If there is a possibility that the unit truck 1 may come out, the unit truck 1, the driving car 2, and the power supply car 3 may be moved backward while operating the pressing device 84 and pressing with the pressing plate 74.

The lower frame 27 slides on the flat surface 56 of the support member 55 due to the retreat of the unit carriage 1, and gradually descends while moving on the inclined surface 57. Since the grounding leg 35 comes into contact with the inner wall surface of the tunnel 5 on the way (see position C in FIG. 13B), the load of the protection tube unit 21 is supported by the inner surface of the tunnel 5 and the unit truck 1 Is driving car 2
And it moves backward with the power supply vehicle 3. In the initial stage of retreat, the receptacle 11 of each protection tube 9 of the protection tube unit 21 is connected to the end plate 2.
6 comes out of the support hole 29.

The grounding of the grounding leg 35 lowers the outlet 12 side, and the receptacle 11 comes out of the support hole 29, so that 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. 18D).

Since the engaging arm 34 of the lower frame 27 is disengaged from the opening member 61 during the retreat of the unit truck 1, the engaging arm 34 closes and engages with the guide rail 6.

FIGS. 19 and 20 show the inside of the tunnel 5 in which the piping has been completed in this manner. In the tunnel 5, in addition to the protection tube unit 21, the lower frame 27, the stay 38, the pipe pillow 41, the fastening member 42, and the nut 43 are left, and the end plate 26 is mounted on the unit truck 1 while the shaft 4 And is reused together with the unit truck 1.

The subsequent operation is to fill the mortar into the tunnel 5 through a pipe 104 provided in advance in 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. And is engaged with the guide rail 6 by the engagement arm 34 of the lower frame 27, so that it is prevented from floating and is embedded at a predetermined set position.

[0058]

According to the present invention as described above, when a protective tube unit is piped in a tunnel by using a piping device capable of repeatedly using one unit truck, protection is performed at a position away from the unit truck. The tube unit can be assembled. Further, by using an assembling frame that can be separated from the assembling jig, the protection tube unit can be easily lowered from the unit truck after the connection is completed, so that the workability of piping work can be improved.

The above-mentioned assembling jig can be used repeatedly, and the end plate of the assembling frame can be used repeatedly.

[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 an enlarged sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is a partially omitted sectional view of a cable protection tube.

FIG. 6 is an exploded perspective view of the assembling apparatus with a part omitted.

FIG. 7 is a perspective view of a lower frame.

FIG. 8A is a front view when the protection tube unit is suspended. FIG. 8B is a partially enlarged perspective sectional view of the same.

FIG. 9 is a plan view of a unit cart part.

FIG. 10 is a partial perspective sectional view of the above.

FIG. 11 is a sectional view of a connecting portion between the unit truck and the driving vehicle.

FIG. 12 is a partially enlarged cross-sectional view on a unit truck.

13A is a cross-sectional view taken along the line XIII-XIII in FIG.

14A is a partially enlarged cross-sectional view of a unit truck. FIG. 14B is a cross-sectional view taken along line bb in FIG.

15A is a partially enlarged cross-sectional view of a unit truck. FIG. 15B is a cross-sectional view taken along line bb in FIG.

FIG. 16 is a plan view of a brake device of the unit truck.

FIG. 17 is a plan view of a power supply vehicle.

FIGS. 18A to 18D are cross-sectional views showing a connection state between an outlet and a receptacle.

FIG. 19 is a sectional view of a tunnel in a connection completed state.

20 is a sectional view taken along line XX of FIG. 19;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit truck 1a Base frame 1b, 1c Connection frame 1d Sheath pipe 2 Drive car 3 Power supply car 4 Vertical shaft 5 Tunnel 6 Guide rail 7 Guide roller 8 Wheel 9 Cable protection tube 10 Introductory rail 11 Receiving port 12 Insertion 13 Spacer 14 Receiving member 15 Cover member 16 guide portion 17 packing 18 retaining pin 19 assembling device 21 protective tube unit 22 assembling jig 23 assembling frame 24 base 25 backing plate 26 end plate 27 lower frame 28 side frame 29 support 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 fastening member 43 nut 44 Suspension ring 45 Hanging tool 46 Crane 47 Positioning projection 48 Positioning Projection 49 Fixing piece 50 Pin 51 Wedge 52 Receiving plate 53 Jack 54 Piston rod 55 Supporting member 56 Flat surface 57 Inclined surface 61 Opening member 62 Braking device 63 Friction member 64 Pin 65 Swing arm 66 Hydraulic cylinder 67 Piston rod 68 Sector gear 70 Headlight 71 Auxiliary underframe 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 Pressing device 85 Piston rod 86 Male joint 87 Free Joint 88 Drive device 89 Storage battery 91 Connection pin 92 Lock member 93 Sector gear 94 Detection rod 95 Connection bar 95 'Pin 96 Lock device 97 Spring 98 Handle 99 Connection rod 100 Lever 101 Spring 102 Communication equipment 103 Marking line 104 Piping

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Keisuke Fukuoka 1-12-19 Kitahorie, Nishi-ku, Osaka-shi Kurimoto Iron Works Co., Ltd. (58) Field surveyed (Int. Cl. ⁷ , DB name) H02G 1 / 06 311 H02G 9/06

Claims (3)

(57) [Claims] (1) Assembling a cable protection tube in multiple rows and multiple stages.
The protective tube unit is mounted on the unit truck,
The protective tube unit into the existing tunnel.
Of the power cable protection tube unit connected to the protection tube unit
Set of power cable protection tube unit used for piping method
In the stand device, an assembling jig having an abutment plate erected at one end of a base, and an assembling frame detachably mounted on the base, the upper assembling frame being a power cable protection tube unit. An end plate that is provided upright on the front surface of the backing plate at a required interval to support the receiving end of the receiving plate, and the protection tube unit is integrated with the protection tube unit at a position that is a required distance from the end plate toward the insertion side. And a lower frame supporting the lower surface thereof, and a detachable side frame connecting the end plate and the lower frame. A power cable having a pair of grounding legs provided on the lower surface of the lower frame. Assembly device for protection tube unit. 2. The end plate has a multi-row, multi-stage support hole into which receptacles of power cable protection tubes constituting the protection tube unit are inserted, and the lower frame penetrates a pipe pillow of the protection tube unit. The apparatus for assembling a power cable protection tube unit according to claim 1, further comprising a stay that is provided with a suspension ring provided at an upper end of the end plate and the stay. 3. The apparatus for assembling a power cable protection tube unit according to claim 1, wherein a projecting portion that interferes with a tunnel entrance for piping the protection tube unit is provided on a side frame of the assembly frame.