JPS5851319Y2 - assembled telephone pole - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a telephone pole in which several short tubes are joined and assembled.

As shown in Figure 1, conventional utility poles of this type consist of short steel pipe joint columns 1a, 1b, IC, and 1d, and when the pole is erected, the lower part of the lower joint column 1a is underground. The next joint pipe column 1b is lifted onto the upper end of this joint pipe column 1a by the crane of the buried pole construction vehicle, and its lower end is fitted so as to overlap, and the joint pipe columns 1C91d are sequentially stacked and fitted. This is to try to match them.

Therefore, when assembling in this way, when attaching the topmost joint column 1d, it is necessary to extend the tip of the arm of the crane of the excavating pole truck to a high position, and it is difficult to carry the joint column. Since the crane arm needs to be rotated, it is easy to touch high-voltage power lines during the operation, making it difficult to erect poles in narrow spaces.Furthermore, the lifting force due to the force applied to the cables suspended from the poles after construction is high. There was a drawback that the connecting part could come off at the receiving pipe column.

In view of the above points, the present invention is designed to allow pole erection work to be carried out by simply extending the arm of the crane of the hole-drilling pole-erecting vehicle to a low position, and without the need to turn this arm. An assembled utility pole that eliminates the risk of touching high-voltage power lines even if they are installed in the sky near the pole location, and that allows the pole to be erected easily and safely even in narrow spaces. This will be described in detail below with reference to embodiments shown in the drawings.

FIG. 2 shows an embodiment of the present invention, and FIG. 3 shows a state in which each joint column is separated. 11a is a joint column located at the bottom, 1
1 b, 11 C are joint pipe columns to be sequentially located at the top, 11
d is a joint pipe pillar located at the top, and each of these joint pipe pillars is made of steel pipe, and the higher it is located, the thinner it is,
The connecting pipe column 11d located at the top is inserted into the innermost part.

12 is the concrete injection port provided in the joint pipe column 11a located at the bottom, and 13 is the joint pipe column 11 located at the bottom.
Engagement protrusions with a square cross section in the circumferential direction protrude at multiple locations on the lower outer periphery of the connecting pipe columns 11 b, 11 C, 11 d other than a, 14 are the same connecting tube columns 11 b, 11 C, 1
A cut made upward from the lower edge of 1d,
They are provided facing each other on both sides of each of these joint pipe columns.

15.16 is the connecting pipe pillar 1 other than the connecting pipe pillar located at the top
1a, 11b, and IIC are locking protrusions in the shape of a right triangle whose upper and lower surfaces are sloped in cross section and have appropriate widths in the circumferential direction at multiple locations on the inner periphery slightly below the upper end of the IIC. The engagement protrusion 13 fits between the upper and lower engagement protrusions 15 and 16.

Reference numeral 17 denotes a hanging ring provided at the upper end of the connecting pipe column 11a located at the top.

Next, to explain how to erect utility poles of the present invention, dig a hole of the required depth using a hole-drilling pole erecting vehicle, and install each joint pole 11a, 11b, 11C, lld in the state shown in Fig. 2. is buried in the hole, and the tip of the arm B of the crane of the excavating pole-erecting vehicle A moves one joint pillar one joint further up from the height of the lowest joint pillar 1a whose lower part is buried underground. Extend the tube column until it reaches the same height as when it was pulled up, and place the hook D at the tip of the rope C passed through the arm B at the innermost connecting tube column 11 at the top.
When the connecting pipe column 11 d is pulled up by the hanging ring 17 of d, the retaining protrusion 13 tries to climb up the slope of the lower engagement protrusion 16 and the engagement protrusion 13 is pushed inward, causing the notch 14 The width of the connecting tube column 11 d is elastically narrowed and the lower diameter of the connecting tube column 11 d is reduced, so that the engaging protrusion 13 having an angular cross section becomes the connecting tube column 11 C.
After getting over the slope of the lower locking protrusion 16, the reduced lower diameter of the connecting pipe column 11d widens to its original diameter, and the angular groove formed between the lower locking protrusion 15 and the upper locking protrusion 15 expands. They are fitted and locked, and the connecting pipe columns 11d and 11C are securely fixed in that position, and cannot escape up or down even if a vertical force is applied.

Thereafter, the gap between the upper end of the connecting pipe column 11C and the connecting pipe column 11d is closed with putty 18 to prevent poured concrete from leaking from this gap during concrete pouring, which will be described later.

Next, as shown in Fig. 4, wire E is wound around the connecting pipe column 11C, and this wire E is hung on the hook D at the end of the rope C of the crane of the excavating pole construction vehicle A to pull up the connecting pipe column 11C. .

As a result, the engaging protrusion 13 of the joint pipe column 11C is
is fitted between the upper and lower locking protrusions 15 and 16 of the joint column 11b and is locked.

The gap between the upper end of the joint column 11b and the joint column 11C is filled with putty 18.

Next, in the same manner as above, a wire is wound around the joint column 11b, and the wire is hooked onto the hook D at the tip of the rope C of the crane and pulled up, so that the engaging protrusion 13 of the joint column 11b is connected to the lowermost joint. It is fitted and locked between the locking protrusions 15 and 16 of the tube column 11a, and the gap between these two tubes is filled with putty.

In this way, since the connecting pipe columns 11b, 11C, and 11d are pulled up in order to extend them in the direction, it is sufficient to pull up the connecting pipe pillar located below, and the height of the extended tip of the crane arm B is The pole can be erected at a much lower position than the high-voltage power line H.

At this time, the arm B of the crane only needs to be extended in one direction, and there is no need to rotate it.

As shown in FIG. 5, all the connecting pipe columns other than the lowermost connecting pipe column have been pulled up and extended to the required height, and the lowermost connecting pipe column 11a is A concrete injection hose G is connected to the concrete injection hole 12, and concrete is injected using a concrete mixer truck F or the like until the entire joint pipe column is filled, and the erection of the column is completed.

Once the poured concrete hardens, it becomes a strong utility pole.

In addition, although the above-mentioned example showed the case where it consisted of four joint pipe pillars, it may consist of a different number of joint pipe pillars.

As explained above, according to the present invention, if the connecting pipe column that should be located directly above is pulled up from within the lowest and outermost connecting pipe column buried underground, the width of the lower cut of the connecting pipe column can be increased. By being elastically pinched and the lower diameter reduced elastically, the engaging protrusion of the connecting tube column overcomes the lower locking protrusion of the lower connecting tube column, enters between it and the upper locking protrusion, and escapes in the vertical direction. By being held together in an impossible manner, even if the weight of the heavy pipe column itself or an external force is applied, it will not become uncoupled and fall, and even if a force upward from that point is applied, it will not move upward. It is securely fixed in place without being pulled out.

In addition, the crane of the hole-drilling pole-erecting vehicle can pull up the connecting pipe pole from below, and the crane arm does not need to rotate as it only extends upward in one direction. Even if there is a pipe, the work can be carried out safely without fear of coming into contact with it, and the pole can be easily erected even in a narrow space. By injecting concrete into the inside of the jointed pipe pole, it is possible to make it a sturdy utility pole.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a conventional assembled column, Fig. 2 is a longitudinal cross-sectional view of an embodiment of the present invention, Fig. 3 is an exploded view showing each joint column separated, and Fig. 4 is a state in which the column is erected. FIG. 5 is a diagram showing the state of concrete pouring. 11a, 11b, 11c, 11d...
...Connecting pipe column, 12...Concrete injection port,
13... Engaging protrusion, 14... Notch, 1
5゜16...Lock protrusion.

Claims (1)

[Scope of utility model registration request] A plurality of joint pipe columns, which should be located at the top, are sequentially inserted and housed in the outermost joint pillar, which should be located at the bottom where the concrete injection port is provided. Each of the connecting pipe columns other than the pipe column is provided with a notch that goes upward from the lower edge, and an engaging protrusion is provided at the bottom of the outer peripheral surface, so that the innermost connecting tube column that should be located at the top is The width of the notch is formed on the upper inner circumferential surface of each joint column except for the width of the cut when the joint column that should be located directly above is pulled up, and the engaging protrusion of the joint column that should be located directly below it is pushed. a lower locking protrusion that can be overcome by narrowing elastically, and an upper locking that can vertically clamp the engaging protrusion that has climbed over the lower locking protrusion so that it cannot escape from the lower locking protrusion. An assembled utility pole characterized by being provided with a protrusion.