JPH0441694Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Industrial field of application> This invention relates to underground cable fittings, and in particular, a mounting fitting that allows accessories such as rollers for cable extension and extension fittings to be attached with a single touch. This is what we provide.

<Prior art> Conventionally, as shown in Fig. 9, this type of mounting bracket was inserted into the hollow interior of the existing cross member 1 through the opening at its free end, and fixed by inserting bolts 2 in series. A mounting bracket 3 has been known that allows this.

<Problems to be solved by the invention> However, with the conventional mounting bracket 3, when installing the mounting bracket 3, the bolt 2 must be loosened, the mounting bracket 3 must be inserted, and the bolt 2 must be tightened again after insertion.
Furthermore, when removing the device, the bolt 2 must be loosened, removed, and then tightened again, making insertion and removal very troublesome and poor workability.

<Means for Solving the Problems> The present invention is intended to solve the above-mentioned problems, and the contents thereof will be explained below based on embodiments shown in the drawings.

In the present invention, a support bolt 23 is passed through the free end of the cross member 13 laterally, and the shaft portion 23' of the support bolt 23 passing through the hollow interior of the cross member 13 is inserted into the opening at the free end of the cross member 13. At the same time, the mounting bracket 16 has a hook-shaped arm that can be inserted into the hollow interior of the cross member 13 by passing under the shaft portion 23' of the support bolt 23 from the opening at the free end of the cross member 13. 27 is provided in a protruding manner.

<Function> To attach accessories (for example, roller 15, expansion fittings 37, etc.) using the mounting bracket 16, as shown in FIG. Insert it diagonally downward to match the opening at the free end of the member 13, and make it almost parallel to the cross member 13 while passing under the shaft portion 23' of the support bolt 23 that passes through the hollow interior of the cross member 13. As a result, the arm portion 27 is hooked onto the shaft portion 23' of the support bolt 23 from below, and is locked in the hollow interior of the cross member 13 in a non-returning manner.

On the other hand, in order to remove the installed mounting bracket 16, insert the arm portion 27 of the mounting bracket 16 into the shaft portion 3 of the support bolt 23.
The cross member 13 may be pulled diagonally upward through the free end opening of the cross member 13 while being pulled up diagonally using the cross member 2' as a fulcrum.

<Example> The present invention will be described below based on an example shown in the drawings.

In the figure, reference numeral 10 indicates a metal fitting for an underground cable. A rectangular pipe-shaped horizontal member 13 whose free end extends almost horizontally into the tunnel, a wide receiving tray 14 for directly placing a cable fixed to the upper surface of this horizontal member 13, and A removable mounting bracket 16 is provided for mounting a cable extending roller 15 as an accessory.

The vertical member 12 is made of an angle member, one piece of which is fixed with buried bolts (not shown) at appropriate intervals along the inner wall 11 of the tunnel, and protrusions projecting from the inner wall 11 of the other tunnel. The piece 17 is provided with a plurality of horizontally penetrating holes 18 for attaching the cross members 13 in the vertical direction.

The horizontal member 13 is made of a square pipe material, and has a pair of mounting pieces 19, 19 facing each other and extending upward at its base end into which the projecting piece 17 of the vertical member 12 can be inserted from the side. However, this mounting piece 19 has the protruding piece 1
Holes 20, 20 communicating with hole 18 of No. 7 are bored in two stages, upper and lower. The upper surface of the saucer 14 is substantially flat, and the lower surface thereof is provided with four fastening pieces 21 facing each other at intervals substantially equal to the width of the horizontal member 13.

The cross member 13 and the saucer 14 are assembled in advance. That is, the cross member 1 is inserted between the fastening pieces 21 of the saucer 14.
3 from below, pass the horizontal member 13 through the opposing fastening pieces 21, pass the support bolts 22, 23 in series laterally, and tighten with the support nuts 24, 25.
The saucer 14 is fixed to the horizontal member 13 in advance. When the support bolts 22 and 23 are passed through the cross member 13 in this manner, the shaft portion 23' of the support bolt 23, which has penetrated toward the free end of the cross member 13, penetrates the hollow interior of the cross member 13 and is exposed. The end 23' faces relatively close to the free end opening of the cross member 13 (FIGS. 2 and 3).

The mounting bracket 16 is formed by bending a metal plate into a U-shape, and includes a central base 26 and a pair of left and right arms 27, 27 extending laterally from both left and right ends of the base 26 in the same direction. Become. The base portion 26 is provided with a mounting hole 28 that penetrates the base portion 26 from the front to the rear at approximately the center thereof.

The arm portion 27 has a tapered shape with its upper end slanting diagonally downward toward the tip, and the tapered tip is provided with a tip curved portion 29 that is curved upward in a cross-shaped shape. A shallow arc-shaped recess 30 is provided at the base of the tip curved portion 29,
In the side surface of each arm portion 27, longitudinally long elongated holes 31, 31 are formed, respectively, passing through the arm portion 27 laterally.

The roller 15 and the mounting bracket 16 are assembled in advance. That is, the mounting hole 28 of the mounting bracket 16
Pass the screw rod 32 of the roller 15 from the outside to the inside,
Tighten the nut 33 from the inside to rotatably fix the roller 15 to the mounting bracket 16 (FIG. 2).

Next, to explain the installation procedure, first, the vertical members 12 are fixed at appropriate intervals along the inner wall 11 of the tunnel,
A horizontal member 13 with a saucer 14 is attached to the projecting piece 17 of the fixed vertical member 12.

That is, the protruding piece 17 of the vertical member 12 is inserted between the mounting pieces 19 of the horizontal member 13, and the holes 18 of the protruding piece 17 and the mounting piece 1
Align the holes 20 of 9 with each other and insert the fixing bolts 34.
are passed through in a series and fixed by tightening with the fixing nut 35. Incidentally, since a plurality of holes 18 are formed in the protruding piece 17 in the vertical direction, the mounting height of the cross member 13 can be set freely.

Next, the mounting bracket 16 with the rollers 15 is attached to the free end of the existing cross member 13 whose base end is fixed to the vertical member 12. Note that the rollers 15 may be attached to each of the existing cross members 13, or one
It can also be attached to a book holder.

To install the roller 15, as shown in Figure 3,
Insert the arm portion 27 of the mounting bracket 16 diagonally downward from above, aligning it with the free end opening of the cross member 13.
The shaft portion 23' of the support bolt 23 is exposed in the hollow interior of the cross member 13 at the bent end portion 29 of the arm portion 27.
From below, scoop up the curved tip part 2.
9 is made lower than the shaft portion 23' of the support bolt 23 so as to go under the shaft portion 23', and the arm portion 27 is made almost horizontal inside the hollow part of the cross member 13.

As a result, the bent end portion 29 of the arm portion 27 projects slightly above the lower end of the shaft portion 23' of the support bolt 23, and the recessed portion 30 on the upper surface of the end portion
The arm part 27 is irremovably restrained in the hollow interior of the cross member 13 in a non-returning manner, and the roller 15 is fixed to the existing cross member 13 via the mounting bracket 16. (Figure 4).

After installing the roller 15 in this way, pass the cable 36 over the roller 15, and
Using the rotation of step 5, pull in the cable 36 with a winch (not shown), etc.
is placed directly on the top surface of the existing saucer 14, and the cable 36 is laid within the tunnel.

On the other hand, after the cable 36 is laid, the rollers 15 are no longer needed, so they are removed from the existing cross member 13 of the mounting bracket 16 and recovered.

To remove the roller 15, remove the arm 2 of the mounting bracket 16.
7 may be pulled diagonally upward while pulling up diagonally using the shaft portion 23' of the support bolt 23 as a fulcrum.
As a result, the bent end portion 29 of the arm portion 27 descends from the shaft portion 23' of the support bolt 23 and comes off while passing under it.

On the other hand, Figures 5 to 8 show other embodiments, in which an extension fitting 37 can be attached to the existing cross member 13 using the same mounting fitting 16 as in the previous embodiment. It is something.

The extension fitting 37 is composed of an extension cross member 38 that is added to the existing cross member 13, and an extension tray 39 that is placed on the upper surface of this extension cross member 38. The expansion cross member 38 is made by cutting the square pipe material used for the existing cross member 13 into relatively short lengths, and has through holes 40 and 41 penetrating both sides at both ends thereof. A partition plate 42 is provided inside the hollow space, and a through hole 43 penetrating the partition plate 42 in the longitudinal direction is provided in the partition plate 42.

Further, the extension tray 39 has almost the same shape as the existing saucer 14, and has an extension horizontal member 3 on its lower surface.
Four fastening pieces 44 facing each other at intervals approximately equal to the width of the horizontal member 8 are provided, and each fastening piece 44 has a communication hole 45 that communicates with the through holes 40 and 41 of the extension cross member 38.
... will be opened.

Next, to explain the expansion procedure, first, the mounting bracket 1
A tightening bolt 46 is passed through the mounting hole 28 of 6 from the inside to the outside, and is fixed by tightening with a nut 47 from the outside.

Then, the extension cross member 38 is fitted from below between the fastening pieces 44 of the extension tray 39, and the communication holes 45 of the fastening pieces 44 and the through holes 40, 41 of the cross member 13 are aligned with each other. At the same time, the mounting bracket 16 is
Insert the end of the tightening bolt 46 into the base end opening of the extension cross member 38 from the base 26 and insert it into the extension cross member 38.
8 through the through holes 43 of the partition plate 42, and align the long holes 31 of the arm portions 27 with the through holes 40 near the proximal end of the extension cross member 38, and pass the support bolts 48 in series. Tighten and secure with nut 49.

On the other hand, the through hole 4 of the partition plate 42 of the horizontal member 38 for expansion
A tightening nut 50 inserted from the base end opening of the extension cross member 38 is screwed onto the tip of the tightening bolt 46 that protrudes through the extension cross member 38 (FIG. 6). At this point, the through hole 4 near the free end of the extension cross member 38 is
1, it is preferable to place the support bolt 51 without passing it through.

In this way, the mounting bracket 16 fixed to the extension cross member 38 is attached to the existing cross member 13 in the same manner as in the previous embodiment, but at this point, as shown in FIG. The end face of the free end of the cross member 13 and the end face of the proximal end of the extension cross member 38 are separated, and the mounting bracket 16 can also be removed.

Next, a box spanner 52 is inserted through the opening at the free end of the extension cross member 38 and the fastening nut 50 is tightened. As a result, the tightening nut 50 is screwed into the tightening bolt 46, the opposing distance between the base 26 of the mounting bracket 16 and the partition plate 42 is gradually narrowed, the expansion cross member 38 approaches the existing cross member 13, and the cross member 1
The end face of the free end of 3 and the end face of the proximal end of the extension cross member 38 are in close contact with each other, and the mounting bracket 16 also becomes unremovable (FIG. 8). In addition, the elongated hole 31 is opened in the arm portion 27.
This is to allow this movement of the mounting bracket 16.

In this way, when the extension cross member 38 is brought into close contact with the existing cross member 13, the fixing piece 44 of the extension tray 39, which is in communication with the through hole 41 near the free end of the extension cross member 38, Support bolt 51 is inserted into the communication hole 45 of
are passed in series and tightened with a support nut 53 to fix the extension tray 39.

As a result, the top surface of the existing saucer 14 and the top surface of the additional saucer 39 are substantially flush with each other, and the cable 36
The area on which it can be placed is expanded. At the same time, the shaft portion 51' of the support bolt 51 passed through the through hole 41 near the free end of the extension cross member 38 penetrates through the hollow interior of the extension cross member 38 and is exposed. faces the free end opening of the extension cross member 38. Therefore, the roller 15 with the mounting bracket 16 described in the previous embodiment can be similarly mounted using the exposed shaft portion 51'.

According to this embodiment, the existing horizontal members 13 and saucers 14
Since the extension fitting 37 can be attached without replacing the extension fitting 37 with a larger size one, it is possible to shorten the work time and reduce the installation cost at the time of extension. Also, since the mounting bracket 16 of the roller 15 and the mounting bracket 16 of the expansion bracket 37 are used in common,
It is possible to standardize the mounting fittings 16, reducing the manufacturing cost of the mounting fittings 16, and improving work efficiency due to the standardization of the mounting work.

In addition, in the embodiment shown in the drawings, the existing cross member 13
Although the explanation has been given using the roller 15 and the extension metal fittings 37 as examples of accessories to be attached to the winch, it may also be a stand for a winch, a scaffolding, or the like.

In addition, in the embodiment shown in the drawings, the support bolt 2
3 and 51 to fix the receiving tray 14 and the additional receiving tray 39, and the mounting bracket 16 can be attached using the support bolts 23 and 51, but the bolts may be made independent from each other.

<Effects of the invention> As explained above, according to the invention, not only the structure is relatively simple, but also the installation, recovery, and replacement of accessories such as rollers and expansion fittings are easy. Furthermore, it is possible to provide an underground cable fitting that can be made efficiently and in a short time. Furthermore, since the mounting bracket can be widely used for attaching accessories such as rollers and expansion fittings, its range of applications is extremely wide, and the mounting bracket can also be used as a standard product common to various accessories.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is an exploded perspective view, Fig. 2 is an enlarged view of main parts, Fig. 3 is an explanatory diagram showing the installation procedure, and Fig. 4 is a part showing the installation state. A side view, FIG. 5 is a perspective view showing another embodiment, and FIG. 6 is a side view.
The figure is an explanatory diagram showing the installation procedure, Fig. 7 is a right side view of the same as above, Fig. 8 is a partial side view showing the installation state, and Fig. 9 is an explanatory diagram showing the installation procedure.
The figure is an exploded perspective view showing a conventional example. In the figure, 10 is a metal fitting for underground cables, 11 is an inner wall in the tunnel, 12 is a vertical member, 13 is a horizontal member (existing),
14 is a saucer, 15 is a roller as an example of accessories,
Reference numeral 16 indicates a mounting fitting, 23 a support bolt, 23' a shaft portion, 27 an arm portion, 36 a cable, and 37 an extension fitting as an example of an accessory.

Claims (1)

[Claims for Utility Model Registration] A vertical member fixed at appropriate intervals along the inner wall of a tunnel, a base end fixed to the vertical member, and a free end extending substantially horizontally into the tunnel. A base comprising a rectangular pipe-shaped horizontal member, a wide receiver fixed to the top surface of the horizontal member for directly placing a wide cable, and a removable mounting bracket for attaching accessories to the horizontal member. In the metal fitting for a medium cable, a support bolt is passed through the free end of the cross member laterally, so that the shaft portion of the support bolt passing through the hollow interior of the cross member faces the opening of the free end of the cross member, The mounting bracket has a protruding hook-shaped arm that can be inserted into the hollow interior of the cross member by passing under the shaft of the support bolt from the opening at the free end of the cross member. Metal fittings for underground cables.