JP2676455B2 - Cable protection tube pressing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing device for connecting front and rear units when a plurality of protective tubes for underground power transmission cables are sequentially arranged as a unit in a tunnel.

[0002]

2. Description of the Related Art In recent years, underground structures have tended to become overcrowded, so when installing cables for underground power transmission, the open-cut method cannot be adopted, and the shield method and push pipe Tunnels for burying cables are being excavated deep underground by the construction method.Furthermore, there is a marked tendency to lengthen tunnels due to difficulty in securing vertical shafts during tunnel excavation and cost reduction. A long-distance tunnel having a curved tunnel portion is adopted.

In order to arrange an underground power transmission cable in such a tunnel, a cable protection tube unit formed by stacking a plurality of fixed-length cable protection tubes is conventionally loaded on a truck. While the bogies are sequentially connected in series in the shaft, the rails are pushed from the shaft into the tunnel, and are arranged along the entire length of the tunnel. The tubing is achieved by mortar filling the space between the two.

[0004]

However, according to the above method of arranging the cable protection tube, when the tunnel is bent in the up-down direction or in the left-right direction, in particular, it is bent in an S shape. If the connection between the cable protection tube units loaded on the front and rear bogies is in a rigid connection, the bogie derails and falls off the track of the bending tunnel, and the unit If the connection between them is in a loose fitting state, there is a problem in that the connecting portion is disengaged and a pipe line communicating in series cannot be formed. This is because it is not possible to absorb the difference in circumferential length between the upper and lower sides or the left and right sides, which occurs when the unit passes through the bending tunnel portion.

Further, since the units connected in series are pushed in one direction from one vertical shaft side across the tunnel to the other vertical shaft side, if the tunnel length is long, it takes a long time to dispose the unit. However, there is a problem in that a large pressing force is required to push the entire body and the end surface of the cable protection tube is damaged. It is an object of the present invention to provide a pressing device for a cable protection tube that can completely eliminate such problems.

[0006]

Means for Solving the Problems] To achieve the above object, the pressing device of the cable protection tube of the present invention is loaded with the cable protection tube unit formed by stacking sequence a plurality of fixed-length cable protection tube through interpolated by the protective tube Yu between the start vehicle to push the protective tube unit carriage protective tube unit carriage Toko traveling rail on which is laid from the pit into the tunnel
With a pressing device that presses and fits the front end of the cable protection tube on the knitted trolley to the rear end of the opposite protection tube of the cable protection tube unit on the pedestal of the protection tube unit on the trolley unit carriage that has been loaded into the tunnel in advance there are, a frame carriage which travels on the rail, and a connecting member for <br/> detachably connected to the frame bogie to the rear end of the protective tube unit carriage, the protection provided on the front side of the frame bogie A pressing plate for pressing the rear end surface of the pipe unit , and an expansion / contraction means for moving the pressing plate forward and backward ,
And a means for tilting the pressing plate in the front-back and left-right directions .

[0007]

[Function] While the starter vehicle reciprocates between the shaft and the tunnel, the cable protection tube unit carrying trolley connected to the front side of the trolley is first loaded to the predetermined position in the tunnel. A unit pipe line connected in series is formed over the entire length of the tunnel while repeating the work of connecting to the rear end using a pressing device. To connect the front end of the protection tube unit on the trolley to the rear end of the protection tube unit that was previously installed and fixed in the tunnel by the pressing device, first connect the protection tube unit loading carriage and the frame carriage of the pressing device. At the same time, the pressing plate is moved forward to press the rear end surface of the protection tube unit on the carriage.

[0008] The pressing force of the pressing plate, directly both Ke
Is transmitted to the joint between the cable protection tube units, and
The opposing cable protection tubes of the front and rear cable protection tube units can be connected with each other without damaging the end surface of the cable protection tube with a comparatively small pressing force, and in the bent tunnel section, the pressing plate is provided according to the degree of bending of the tunnel.
By tilting the cable in the front-rear direction or in the left-right direction so that the cable protection tubes at the connection part are fitted so that the upper and lower cable protection tubes and the left and right cable protection tubes have different fitting depths. Can be connected while absorbing, cable protection in curved tunnel section
The pipes can be connected easily and reliably.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings, in which 1 is a frame carriage of a pressing device A, and a pressing jack 2 is provided at the center of the frame base 1a so as to be slidable back and forth. The lot end is pivotally attached to and connected to the bracket 3 projecting from the rear end of the frame 1a, and the front end is shown in FIG.
It is integrally fixed to the central portion of the cross arm 4 which extends vertically and horizontally. Further, the central portion of the front surface of the cross arm 4 is connected to the central portion of the rear surface of the pressing plate 6 by a universal joint 5 which can be swung back and forth and left and right. The pressing plate 6 is formed in such a shape that the rear end surface of the cable protection tube unit 7, which will be described later, can be pressed entirely.

Further, the pressing direction correcting jacks 8 are attached to the upper, lower, left and right arm ends of the cross arm 4, and the rod ends of these jacks 8 are pivotally connected and connected to the upper and lower portions and both sides of the pressing plate 6, respectively. The push plate 6 is tilted back and forth and left and right around the universal joint 5 by expanding and contracting the jack 8. A cushioning material 9 made of a rubber plate is attached to the front surface of the pressing plate 6. It should be noted that a small diameter hole 10 for confirming the connection state between the pipes that penetrates the pressing plate 6 from the cushioning member 9 and communicates with each cable protection pipe 7a of the cable protection pipe unit 7 on the same axis as shown in FIG. It has been drilled.

Further, rail clamp means 11 are attached to both lower parts of the front end surface of the frame carriage 1, and a connecting bar 12 is detachably connected to the rear end of the protection tube unit carrying carriage B.
And a connecting bar 13 which is always integrally connected to the front end of the electric starting vehicle C are provided at the front and rear ends of the frame carriage 1, respectively. 14
Is a reaction force adjusting jack mounted on both sides of the lower end of the rear surface of the frame carriage 1. By extending the rod of the jack 14, the contact plate 15 attached to the end of the rod is contacted and received by the front surface of the starter vehicle C. I have to. It should be noted that instead of the jack 14, a structure may be adopted in which a screw rod is screwed through the underframe 1a so as to be able to move back and forth. 16 is a hydraulic unit for driving each part of the pressing device A, and 17 is a control panel, which is installed on the frame 1a.

The pressing device A constructed as described above is used when a large number of cable protection tubes 7a are arranged in the tunnel T excavated in the ground between the starting shaft D and the reaching shaft E. It is a thing. As shown in FIGS. 5 and 6, the tunnel T is excavated from the starting vertical shaft D toward the reaching vertical shaft E by a shield construction method, and a long curve portion t having a sharp curvature is provided in the middle portion thereof. It is a distance tunnel.
A rail L is laid on the bottom surface of the tunnel T in parallel with the excavation of the tunnel T or after the excavation over the entire length of the tunnel T including the compatible wells D and E.

Next, using the pressing device A, the tunnel T is
Described about how to install the cable protection tube inside,
First, in the starting shaft D, an electric traveling starter vehicle C in which a pressing device A is connected to the front surface side via a connecting bar 13 is installed on the rail L, and a cable protection tube laminated truck is installed on the front surface side of the pressing device A. The rear end of B is connected via a removable connecting bar 12. The cable protection tube 7a has a fixed length and a diameter, and at the rear end thereof, as shown in FIG. The socket 20 is fitted and a packing 20 is provided on the inner peripheral surface of the socket body 18. As shown in FIG. 1, a plurality of the cable protection tubes 7a are arranged side by side in a horizontal direction on a carriage B via tube pillows 21 and a predetermined number of the cable protection tubes 7a are stacked and stacked to form a cable protection tube unit 7. Both sides of the rear portion of the unit 7 are supported by stays 22 provided upright on both side edges of the carriage B.

After that, the starter vehicle C is driven to drive the cable protection tube unit loading carriage B via the pressing device A from the starting vertical shaft D side to the reaching vertical shaft E on the rail L while predetermined position in the tunnel T. Then, the connecting bar 12 is separated at that position, and the starting vehicle C is retracted to the starting shaft D integrally with the pushing device A, leaving the carriage B carrying the cable protection tube unit A. The unit loading carriage B carried into the tunnel T has a wife formwork, leaving the rear end thereof.
The inner wall surface of the tunnel T and the outer peripheral surface of each cable protection tube are surrounded by 23, and a filling material 24 such as mortar or concrete is placed in the end form 23 through an injection hole 25 formed in the end form 23. And the unit loading carriage B is embedded in the tunnel T.

Then, a truck B carrying a cable protection tube unit 7 in the same manner as described above is connected to the front end of the pressing device A that has returned to the starting shaft D along with the starter vehicle C, and the starter vehicle C is made to travel and inside the tunnel T. Bring in the unit loading cart B to
When it reaches the position near the rear end of the unit loading carriage B that has been previously carried in, it is stopped. At this stop position, the rail L is gripped by the clamp means 11 to fix the pressing device A on the rail L and the reaction force adjusting jack 14 is extended to bring the contact plate 15 into contact with the front surface of the starting vehicle C. , The reaction force is received by the starting vehicle C, while the connecting bar 12 is released.

In this state, when the pressing jack 2 is operated to move the pressing plate 6 forward, the cushioning material 9 attached to the front surface of the pressing plate 6 is mounted on the carriage B connected to the pressing device A. After contacting the rear end surface of the cable protection tube unit 7, the unit 7 is pushed forward together with the carriage B,
The tip of 7a is fitted into the rear end socket body 18 of each opposing cable protection tube 7a of the unit 7 which is previously arranged.

In this way, the front ends of the cable protection tubes 7a of the succeeding unit 7 are simultaneously inserted into the rear ends of the cable protection tubes 7a of the preceding unit 7 to connect and communicate these front and rear cable protection tubes 7a, 7a. After that, the starting vehicle C is retracted to the starting shaft D together with the pressing device A, while the unit 7 connected to the previous unit 7 in the tunnel T is provided with the end form 23 at the rear end similarly to the above. The rear end of the cable protection tube is buried by being filled with the filling material 24 while the rear end of the cable protection tube is projected rearward from the gable form 23.

The starting vehicle C retracted to the side of the reaching shaft D is again connected to the front side of the pressing device A by a single cable protection tube unit carrying vehicle B in the same manner as described above.
Each cable protection tube 7a that was carried inside and was buried in the opposite direction
To the rear end socket body 18 by the same operation as above,
The tips of the upper cable protection tubes 7a are fitted and connected. In this way, the starting vehicle C reciprocates in the tunnel T from the side of the starting shaft D to perform the work of sequentially connecting the unit loading carts B to one unit in the tunnel T. Even when the loading carriage B is buried,
The above operation can be surely performed.

That is, the unit loading carriage B is carried into the curved tunnel portion t by the starter vehicle C, and after reaching the rear end of the unit loading carriage B previously arranged or reaching the close position, the connecting bar 12 is released. At the same time, the pressing device A is brought into contact with the front surface of the starting vehicle C through the reaction force adjusting jack 14, and in this state, the pressing jack 2 is operated to move the pressing plate 2 forward through the cross arm 4 and at the same time, the cross arm The pressing direction correction jacks 8 arranged on all four sides are operated to move the pressing plate 6 in the curved tunnel direction, that is, the cross-sectional direction of the central portion of the cable protection tube unit 7 on the carriage B is the normal direction of the rail L. Press it so that it faces you.

As a result of this pressing, as shown in FIGS. 8 and 9, the insertion depth of the cable protection tubes 7a, 7a loaded inside the curved rail L through the socket body 18 is
The cable protection tubes 7a, 7a that are loaded on the outside are fitted deeper than the fitting depth through the socket body 18, so that the cable protection tube unit 7 has a polygonal shape on the arc curve of the curved tunnel portion t. Are sequentially arranged. In this way, a series of cable protection tube unit rows buried with the filling material 24 is piped over the entire length of the tunnel including the curved tunnel portion t.

In the above embodiment, one cable protection tube unit body 7 is carried into the tunnel T,
The filling material 24 such as concrete was filled every time it was connected to the previously loaded unit body 7, but the loading material of the several unit bodies 7 and the filling material of the several units 7 are collectively filled every time the connection work is performed.
It may be buried in the tunnel T by 24, or after arranging a series of cable protection tube units connected in series over the entire length of the tunnel T between the starting shaft D and the reaching shaft E, filling in the tunnel T. Material 24 may be filled. Furthermore, the unit 7 is moved in one direction from the starting shaft D side toward the reaching shaft E side.
Were sequentially loaded and connected in the tunnel T, but the unit 7 may be sequentially loaded and connected in the tunnel T from the reaching shaft E side by the starter vehicle C equipped with the same pressing device A as described above. By carrying in and connecting the unit 7 from the compatible shafts D and E side in this way, more efficient piping work becomes possible.

[0022]

As described above, the pressing device for a cable protection tube according to the present invention has a rail which is laid in a tunnel from a vertical shaft with a cable protection tube unit in which a plurality of fixed length cable protection tubes are stacked and arranged. Protective tube unit truck running above
Between the start vehicle to push the protective tube unit carriage Toko, protective tube Yu that carried to a predetermined position in the tunnel before the front end of the cable protection tube on the protective tube unit carriage
A pressing device that presses and fits the rear end of the protective tube of the cable protective tube unit on the knitted trolley is placed.
Then, while this pressing device moves back and forth between the shaft and the inside of the tunnel together with the starting vehicle, the cable protection tube unit carrying dolly connected to the front side of it is carried in to the predetermined position inside the tunnel to protect the cable on the dolly. It is possible to sequentially and efficiently connect to the rear ends of the pipe units to form a unit pipe line connected in series over the entire length of the tunnel.

When connecting the front and rear cable protection tube units in this way, the pressing device includes a frame carriage running on a rail and a connecting member for detachably connecting the frame carriage to the rear end of the protection tube unit carriage. , provided on the front end side of the frame bogie
A pressing plate for pressing the rear end surface of the protective tube unit, a telescopic means for advancing and retracting the pressing plate in the longitudinal direction, the pressing plate
Since it comprises means for tilting in the front-rear and left-right directions, it releases the connecting member and presses against the protection tube unit loading carriage.
After releasing the connection with the frame carriage of the device, the pressing force of the pressing plate should be directly connected by advancing the pressing plate.
It can be transmitted to the joint between the protection tube units, so that the front and rear cable protection tube units can face each other without damaging the end surface of the cable protection tube with a relatively small pressing force without depending on the length of the tunnel. The cable protection tubes can be reliably connected to each other.

Further, the pressing device includes the pressing plate as described above.
Is equipped with a means for tilting the
In, the curve tunnel section, when pushing the rear end of the cable protection tube unit carried above the next cable protection tube unit from the start vehicle side, in accordance with the curvature of the tunnel press
By tilting the pressure plate back and forth or left and right
Cable protection tube unit at the connection part The cable protection tubes on the upper and lower sides and the cable protection tubes on the left and right sides can be fitted to each other with different fitting depths to allow connection while absorbing the circumferential difference. Cable protection tube uni
The trolley and frame trolley do not fall off the rail or fall, and the cable protection pipe is
To connect the person along the curved tunnel easily and securely.
It can be.

[Brief description of the drawings]

FIG. 1 is a side view showing a state where a cable protection tube unit truck is carried into a tunnel,

FIG. 2 is a plan view thereof,

FIG. 3 is a side view in which a part of the pressing device is sectioned,

FIG. 4 is a front view thereof,

FIG. 5 is a plan view of a tunnel provided between vertical shafts,

FIG. 6 is a simplified vertical sectional side view thereof,

FIG. 7 is a cross-sectional view of the rear end of the cable protection tube.

FIG. 8 is a simplified plan view showing a connection state between tubes at a curved bent portion;

FIG. 9 is an enlarged vertical sectional side view thereof.

[Explanation of symbols]

 1 Frame Cart 2 Push Jack 6 Push Plate 7 Cable Protective Tube Unit 7a Cable Protective Tube 8 Push Direction Correcting Jack 12 Connecting Bar A Pushing Device B Cable Protective Tube Unit Loading Cart C Start Vehicle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuo Yokota 3-3-22 Nakanoshima, Kita-ku, Osaka Kansai Electric Power Co., Inc. (72) Ryuji Miyato 3-22 Nakanoshima, Kita-ku, Osaka Kansai Electric Power Co., Ltd. (72) Inventor Shinya Gaku 3-22, Nakanoshima, Kita-ku, Osaka City Kansai Electric Power Co., Inc. (72) Yoichi Sakuda 3--22, Nakanoshima, Kita-ku, Osaka City Kansai Electric Power Co., Inc. ( 72) Inventor Teruo Kawasaki 3-3-22 Nakanoshima, Kita-ku, Osaka, Kansai Electric Power Co., Inc. (72) Inventor Hiromi Ishii 2-2, Matsuzaki-cho, Abeno-ku, Osaka City Okumura Gumi Co., Ltd. (72) Inventor Shigeki Ohashi 2-2-2 Matsuzaki-cho, Abeno-ku, Osaka City Okumura Gumi Co., Ltd. (72) Inventor Masayuki Yoshioka 2-2-2 Matsuzaki-cho, Abeno-ku, Osaka Okumura Gumi (72) Inventor Atsushi Takubo 2-2-2 Matsuzaki-cho, Abeno-ku, Osaka Okumura-gumi Co., Ltd. (72) Riho Fukuya 1-12-19 Kitahorie, Nishi-ku, Osaka Kurimoto Tetsusho Co., Ltd. (72) Inventor Koichiro Katayose 1-12-19 Kitahori, Nishi-ku, Osaka City Kurimoto Iron Works Co., Ltd. (56) References: Kaihei 5-74121 (JP, U)

Claims (1)

(57) [Claims] 1. A protection pipe unit truck for carrying a cable protection pipe unit in which a plurality of fixed length cable protection pipes are laminated and running on a rail laid in a tunnel from a vertical shaft, and this protection pipe unit carriage. The front end of the cable protection tube on the protection tube unit carriage inserted between the pushing vehicle and the starting vehicle is opposite to the cable protection tube unit on the protection tube unit carriage that has been loaded to a predetermined position in the tunnel first. pressing the rear end of the protective tube, a pressing device for fitting a frame carriage which travels on the rail, a connecting member for detachably connected to the frame bogie to the rear end of the protective tube unit carriage, said frame a pressing plate provided on the front end side of the carriage presses the rear end surface of the protective tube unit, a telescopic means for advancing and retracting the pressing plate in the longitudinal direction, tilt the pressing plate in the longitudinal and lateral directions
A device for pressing a cable protection tube, which comprises: