JPH0133760Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a utility pole auxiliary lifting device for climbing up and down utility poles having scaffolding nails.

Conventionally, scaffolding nails on utility poles have been installed at a point more than 1.8m above the ground for safety reasons, and when there is no auxiliary scaffolding available to climb up to these scaffolding nails, auxiliary lifting equipment is used.

Figure 1 shows this kind of conventional auxiliary lifting equipment, in which 1 is a hanging metal fitting, 2 is a main pillar with the hanging metal fitting 1 attached to the upper end, and 3 is attached to both sides of the main pillar 2. The scaffold 4 is a steady band for preventing the main pillar 2 from swinging.

Figures 2a to 2c show how to attach it to the utility pole A and how to raise and lower it. First, as shown in a, the hanging fitting 1 is hung on the lowest scaffolding nail _a1 . Next, as shown in b, the entire structure is fixed to the utility pole A using a steady rest band 4, and as shown by the arrow in c, it is raised and lowered from the side of the utility pole A using the scaffolding 3.

As described above, since the conventional utility pole auxiliary lifting device lifts and lowers from the side of the utility pole, it is necessary to change the orientation of the body by 90 degrees while going up and down.

In addition, because it is limited to lifting from the direction in which the lowest scaffolding nail _A1 is attached, if there are other structures on the side in that direction, the lifting equipment cannot be used. It was hot too.

The present invention was developed in view of these points, and its purpose is to enable two-point support using the two scaffolding nails on the telephone pole, thereby making it possible to ascend and descend from the front of the telephone pole. To provide an auxiliary lifting device for a utility pole that allows the lifting and lowering of the utility pole to be carried out safely.

Examples of the present invention will be described below. Third
Figure a shows the front of the utility pole auxiliary lifting device of one example.
Further, b indicates a side surface. This utility pole auxiliary lifting device is a three-step ladder with treadles 6 made of three hollow pipes attached between supports 5 on both sides.
It forms a protrusion 7 extending cm, and also the top step 6
As shown in detail in Figure 4, inside the hollow pipe of
A flexible hanging rope 8 serving as a string-like hanging line is slidably inserted through the hanging rope 8, and hanging hooks 9 serving as supporting rings are formed at both ends of the hanging rope 8. Therefore, the length of the hanging rope 8 can be freely changed from side to side.

Therefore, as shown in Figure 5a and b, the utility pole A
Even if the outer diameter of the scaffolding nails a ₁ and the spacing between the scaffolding nails a 1 and a ₂ change, the hanging rope 8 is flexible and the left and right length can be adjusted freely, so the treadle 6 can be kept horizontally. Each hanging hook 9 is a scaffolding nail.
Stability is good because it can be multiplied by a ₁ and a ₂ . Also,
Since the stepper 6 is on the vertical line of the center of gravity of the two-point support, and the four protrusions 7 are in a symmetrical position with respect to the utility pole A around the vertical line,
When climbing up and down telephone poles, while having sufficient footing for shoes,
The utility pole auxiliary lifting equipment can be kept stable.

Furthermore, by connecting the tips of the left and right protrusions 7 with rubber bands, the contact surface with the utility pole can be kept wide, and the fixation of this utility pole auxiliary lifting device to the utility pole can be made more stable. In this case, a curved member 10 in FIG. 4 may be used to connect the protrusions 7 on both sides, and a rubber band 11 may be attached to the outside of the curved member 10. Incidentally, for the same purpose, the tips of the protrusions 7 can also be made into rubber suction cup mechanisms.

Figures 6a to 6e show the process of attaching the above-mentioned utility pole auxiliary lifting device to the utility pole A.First, as mentioned above, since the length of the hanging rope 8 can be freely adjusted from side to side, As shown in
Pull out one side of the hanging rope 8 sufficiently so that the other hanging hook 9 is positioned at the end of the treadle 6 at the upper end, then hold the lower part of the support 5 with your hand and lift the entire thing as shown in b. , higher scaffolding nail a ₂
The other hanging hook 9, which is a shorter hanging rope 8, is hung on the hook.

Next, as shown in c, lower the ladder body to the hanging rope 8, and as shown in d, hook the hanging hook 9 on the opposite side to the lowest scaffolding nail _a1 , and finally Adjust the horizontal position of step 6 as shown in e.

In addition, this utility pole auxiliary lifting device is made of materials (for example,
It is easy to reduce the weight by selecting a corrosion-resistant aluminum alloy (corrosion-resistant aluminum alloy), which also improves transportability, but in order to further improve transportability, the ladder section should be equipped with a stopper mechanism. It can also be made into a telescopic structure or a foldable structure.

As described above, the utility pole auxiliary lifting device of the present invention can be stably attached to a utility pole regardless of the outside diameter of the utility pole or the spacing between scaffolding nails.
Therefore, it can be raised and lowered safely and easily. Further, when installing the support ring, since the string-like suspension line is slidable, the support ring can be easily hooked onto a scaffolding nail located at a higher position.

Furthermore, since the utility pole auxiliary lifting device of the present invention incorporates the functions of conventional auxiliary scaffolding, auxiliary scaffolding can be eliminated from all utility poles, thereby reducing the cost that was previously required for installing auxiliary scaffolding. There are also advantages that can be achieved.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional auxiliary lifting device, Figure 2 a
- c are explanatory diagrams showing how to attach the auxiliary lifting device to the utility pole and how to raise and lower the auxiliary lifting device shown in FIG. 1, FIG. 4 is a partial perspective view showing details of the top part of the utility pole auxiliary lifting device of this embodiment, FIGS. Figures a to e are explanatory diagrams showing the process of attaching the utility pole auxiliary lifting device of this embodiment to a utility pole. A... Telephone pole, a ₁ , a ₂ ... Scaffolding nail, 1... Hanging bracket, 2
…Main pillar, 3…Scaffolding, 4…steady band, 5…post, 6…stepper, 7…protrusion, 8…hanging rope, 9
... Hanging hook, 10... Curved member, 11... Rubber band.

Claims (1)

[Scope of utility model registration request] The ladder is equipped with a ladder in which at least the upper end of the plurality of steps is pipe-shaped, and the ladder has protrusions at four points on the left and right of the upper and lower ends of the ladder, which are perpendicular to the plane of the ladder and facing in the same direction. A utility pole auxiliary lifting device, characterized in that a freely sliding string-like hanging wire is inserted into the tread at the upper end, and supporting rings are formed at both ends of the hanging wire.