JPS5825690Y2 - Underground cable receiving device - Google Patents

Description

[Detailed description of the invention] The invention relates to an underground cable holder that does not damage cables, can be installed efficiently, smoothly, quickly and easily even at bent parts in underground tunnels, and is robust, easy to construct, and can be manufactured on a low floor. .

As shown in FIG. 1, a cable rest 3 is attached to a plurality of supporting metal fittings 2 which are fixed in advance to an inner wall 1a at appropriate intervals in an underground tunnel 1.

The stopper 3a of the cable rest 3 is locked into the hole 2a of the support fitting 2, and the cable rest 3 is moved inward in the figure (assuming that the left side in FIG. 1 is the inside and the right side is the outside).

) is pressed against the surface of the support fitting 2, the inner end surface of the rigging 3 as shown in the figure comes into contact with the outer surface of the support fitting 2 due to the weight of the cable rest 3, and its upper surface is flattened and firmly fixed.

A conventional cable receiver has a mechanism 1' as shown in FIG.

That is, a depression a formed of a continuous arcuate surface is formed on the upper part of the base 4, which has an engaging arm 4a bent downward in a U-shape so as to engage with the locking edge 3b of the cable rest 3. A mechanical mechanism was used as the cable receiver to which the cable receiver 5 provided with the cable receiver 5 was rotatably attached.

A large number of support fittings 2 attached to the inner wall 1a of the underground tunnel 1
Place the cable 7 on the cable holder 5 attached to the
The cable is installed along the inner wall of the tunnel 1, passing through straight sections and bent sections with various degrees of bending.

If the position of one cable changes due to the wiring method, other positions may also move, so leave the cable on the cable receiver 5 where the cable position is set.
Tighten and secure with wing screw 8.

In this case, the circumferential surface of the cable I is likely to get wedged in the recess a of the cable receiver 5, and as a result, friction increases at the bend, making it difficult to pull the cable, making it impossible to change the direction of the cable, and causing damage to the outer surface of the cable. , it is easy to damage the conductive wire inside the cable or deteriorate the insulation.

Normally, about 20 people were required for the cable erection work, which greatly reduced the efficiency of the cable erection work.

In addition, as shown by the broken line in FIG. 1, the cable receiver has a structure in which the pedestal 4' of the mechanism body and the cable receiver 5' are connected in the front and back, and the pedestal 4' is connected to the cable rest 3 as described above. There are some cables that cannot be moved because the cable receiver 5' always protrudes from the outer end of the platform 3, but at the curve of the road, the cable is wedged into the recess a of the cable receiver 5' as before. There were some drawbacks, such as being difficult to bend.

The present invention was devised to overcome the above-mentioned difficulties.

In the present invention, a cable holder is slidably fitted onto a cable rest 3 fixed to the inner wall 1a of an underground tunnel 1, and a cable 7 is thereby installed therein. A pedestal 9 is slidably fitted onto the pedestal 9, and a curved portion 12b is formed of a circular hammered piece, which is provided oppositely in the longitudinal direction of the pedestal 9, and each leg portion 12a is fixed on the pedestal 9 and has a curved upper end. A pair of cable guide rods 12 each bent backward in an inverted V shape, bearings 11, 11 fixed to the legs 12a of each guide rod 12, and a roller shaft 10a supported by these. The underground cable receptacle is comprised of an attached roller 10 made of a heavy material such as iron, and a thumbscrew 13 attached near the outer end of the bent arm 9a of the pedestal 9.

A pair of cable guide rods 12 are welded to a seat plate 9b which is welded to a base 9, and a roller 10 and a roller shaft 10 are welded to each other.
The bearing 11 that supports the leg 12a of each guide rod 12
, 12a.

As shown in FIG. 9, the bearing 11 has a roller shaft 10a and an outer ring 1.
Since the ball bearing 11b is interposed between the roller 10 and the roller shaft 10a, the rotation of the roller 10 and the roller shaft 10a becomes smooth.

In addition, since the roller 10 is made of iron or other heavy material, the acceleration is large like a handwheel, and once it starts rotating, it does not stop easily and the cable is easily fed out.

The above-mentioned pedestal 9, roller 10, bearing 11, cable guide rod 12, and thumb screw 13 are collectively referred to as the underground cable receiver of the present invention as device A.

The proposed device A is fitted into the support fitting 2 in the tunnel 1, and the roller 1 is
Place the cable 7 on top of the cable 7 and place the extended portion of the cable on the rollers in the same way on the other supporting metal fittings 2 attached at predetermined intervals to the inner wall 1a of the line where the cable is to be installed, and extend it further and further and bend it. Overhead lines will be installed through the sections and other areas.

The cable 7 is quickly and smoothly guided by the roller 10 on the roller surface without the cable falling down.

When the cable is placed on the rollers and pulled, the cable is guided by the rotation of the rollers 9 even if it bends a little or a lot, and if the cable bends inward, the device A moves inward as shown in Figure 8. However, the cable is guided by the cable guide rod 12, and when it bends outward, the cable 7 is similarly guided by the device A1 of the present invention and by the outer cable guide rod 12 in the outward direction in FIG.

After determining the correct position of the cable, fix the proposed device A with thumb screws 13 so that the position will not be deviated in the future, remove the proposed device A, and fix the cable to the supporting metal fittings to complete the installation of the underground cable.

In addition, the underground cable receiver may be subject to changes other than those described in the specification and drawings of the present application, such as the material and size of the rollers of the device, the angle of inclination of the cable guide rod, the mounting position of the thumbscrew, and other matters that do not deviate from the gist of the vehicle design. Any design changes can be made freely.

According to the present invention, when the underground cable 7 is installed along the inner wall of the underground tunnel 1, the cable can be mounted at any position fitted to the cable rest 3 attached to the support fitting 2 attached along the inner wall 1a. In the underground cable holder of the present invention, which is fixed by screws 13, the legs 12a of a pair of opposing cable guide rods 12 are fixed on the pedestal 9 of the device A, and the upper curves of the pair of opposing test rods 12 are fixed. The component parts 12b are formed in an inverted V-shape to face each other, and a heavy iron roller 10 and a bearing 1 that supports the roller shaft 10a are attached to the component parts 12b.
1 is attached, so when it is rotated, it accelerates like a handwheel and rotates quickly, and the underground cable 7 is guided smoothly and quickly on the roller surface of the roller 10, and it can be used at corners such as in the road tunnel. , or even when extending in an extremely curved area or diagonally, the rollers 10 are When it is rotated heavily, the acceleration increases, the rotation becomes faster, and there is very little resistance, so the cable 7 can be smoothly and quickly extended and erected, and a single cylindrical rod can be turned into an inverted U. A pair of cable guide rods 12, each having a rounded upper end and placed opposite each other across the cable in an inverted C shape, cooperate with the rollers 10 to prevent the cable 7 from rubbing at any bending angle. Since the cable is guided with less friction, the cable installation work progresses quickly and smoothly, and the cable tensioning, which conventionally required 20 people, can be done by about 5 people, making it highly economical.

A normal cable has a diameter of 6.7 CIrL, but the present device A
Since the cable guide rods 12 are arranged opposite to each other in an open inverted V-shape, even a cable having a large outer diameter of about 15 cIfL can be sufficiently guided.

Also, since the thumbscrew 13 is attached to the side surface of the outer end of the pedestal 9 near the roller 10, if the device A of the present invention is fitted to the cable rest 3 in the opposite direction, it can be attached to the outer end of the cable rest 3. The roller 10 can be moved and used for both purposes, and there is no problem in tightening nuts even if the cable is placed on the roller. Even if the device A of the present invention is brought near the end, there is sufficient room for screwing with the wing screw 13, and the screwing operation can be performed easily and quickly since the screws are not screwed directly under the cable or on the inside of the cable.

In addition, the cable does not become difficult to move around bends, etc., and the cable is stretched smoothly at any bend, so there is no risk of damage to the conductor wire inside the cable or damage to the outer sheath. Since there is no possibility of damage, electrical insulation is maintained well and a long lifespan is maintained.

Furthermore, dogs have practical benefits such as being able to pull cables smoothly and quickly even on uphill slopes in the tunnel.

[Brief explanation of drawings]

Figure 1 shows a cable rest installed on the support fitting inside the tunnel.
A conventional cable receiver is a side view illustrating an example of a mechanism installed, Figure 2 is a plan view of the cable rest, Figure 3 is a front view of the cable rest, and Figure 4 is a conventional cable receiver. Figure 5 is a rear view showing another example of the mechanism installed on a cable rest, and Figure 5 is the same (a side view of the conventional cable holder showing another example of the mechanism installed on a cable rest). Figures 6 to 8 are related to the present invention. Figure 6 is a plan view of the underground cable holder of the present invention, Figure 7 is a front view of the device, and Figure 8 is a cable holder with a book on it. The proposed underground cable receiver is a partially cutaway side view showing the installed state of the device, and FIG. 9 is a vertical sectional view of the bearing. Ka......The underground cable receiver is a device, a....
Hollow, b...Welding, 1...Dodo, 1a
・・・・・・Inner wall, 2・Curve・Support metal fittings, 2a・・・・
・Hole, 3...Cable rest, 3a...
- Stopper, 3b...Downward side edge, 4.4'...
...Pedestal, 4a...Engagement arm, 5, 5'...
...Cable receiver, 6,6'... Cable receiver is mechanism, 7... Cable, 8... Screw, 9... Pedestal, 9a・・・・・・Curved arms, 9
b...Seat plate, 10...Roller, 40
a...Roller shaft, 11...Bearing, 11
a...Outer ring, 11b...Ball bearing, 12
... Cable guide rod, 13 ... Thumb screw.

Claims (1)

[Scope of utility model registration request] A cable receiver is slidably fitted onto a cable rest 3 fixed to the inner wall 1a of the underground tunnel 1, so that the cable 7 can be installed in the mechanism 6. A pedestal 9 to be fitted onto the pedestal 9, and two leg portions 12 provided opposite to each other in the longitudinal direction of the pedestal 9.
A is fixed on a pedestal 9 and is made of nine rods with a curved upper end.
A pair of cable guide rods 12 each having a bent portion 12b bent backward in an inverted V shape, and a leg portion 12 of each guide rod 12.
bearings 11, 11 fixed to a, a roller 10 made of a heavy material such as iron to which a roller shaft 10a is attached and supported by these, and a butterfly attached to the outer end of the curved arm 9a of the pedestal 9. The underground cable holder consisting of screws 13 is a device.