JPS6221417Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a steel pipe column top cover installation tool that can attach a top cover to a steel pipe column with an extremely simple operation.

In the past, wood and concrete were generally used as utility poles erected to support telephone lines. However, recently, steel pipe columns have begun to be widely used because they are lightweight, easy to carry, and have excellent strength.

However, for such steel pipe columns,
When used in the mountains, etc., there are many accidents in which birds accidentally fall into the holes in the steel pipe pillars and die.To prevent this, the top opening of the steel pipe pillars is often covered with a top cover. It is being said.

By the way, the conventional method of attaching a top cover to such a steel pipe column is to install scaffolding bolts on the steel pipe column in advance, and to use these scaffolding bolts, a worker climbs up to near the top of the vertically erected steel pipe column. streamer,
There is a method for installing the top cover. This method of attaching the top cover requires scaffolding bolts to be provided on the steel pipe column, which has the drawback of increasing the manufacturing process of the steel pipe column and increasing the cost of the steel pipe column.

Another method for attaching a top cover to a steel pipe column is to have a worker climb near the top of the steel pipe column using a ladder truck or a portable ladder and install the top cover. This method of attaching the top cover has the disadvantage that a ladder truck or a ladder must be transported to the site where the steel pipe columns are laid and installed, making the work extremely troublesome. Also,
Workers had to climb up the ladder installed as described above to perform the work, which was accompanied by the risk of falling from the ladder.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a steel pipe column top cover installation tool that can reliably and safely attach a top cover to the top end of a steel pipe column that does not have scaffolding bolts by an extremely simple operation. With the goal.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a state in which a top cover is attached to a steel pipe column using a steel pipe column top cover installation tool. 1 in the figure is the steel pipe column top cover installation tool, and this installation tool 1
As shown in FIG. 4 and FIG.
The connecting member 4 is fixed to the upper part of the connecting member 4.

As shown in FIG. 2, the rod 2 is made up of a plurality of, for example, four, aluminum tubes 5a to 5d each having a different diameter and connected in the length direction.
To explain the connecting portion between the tubes, taking the lowermost part as an example, as shown in FIG. A plurality of bolts, for example two bolts 6, are inserted into the overlapping portions of both tubes 5a and 5b, and a nut 7 is screwed into the protruding tip portion of the bolt 6.
Hereinafter, the other connecting parts have the same structure, and the explanation thereof will be omitted.

As shown in FIGS. 4 and 5, the connecting member 4 consists of a rod member 8 and two bands 9 attached to the lower part of the rod member 8 by welding at a distance. And two bands 9
are fitted onto the upper ends of the rods 2, respectively, and are tightened and fixed with bolts 10. Further, the upper lid gripper 3 is attached to the upper end of the rod member 8 by welding.

As shown in FIG. 6, the top lid gripping tool 3 includes a pair of gripping members 11, 11, a spring 12, and a plurality of top lid holding members 13. The gripping member 11 has a semicircular arc-shaped gripping portion 15 at one end of the trunk 14.
These gripping members 11,
11 are arranged so that the circular arc inner surfaces of the gripping parts 15 face each other. Further, flat plate-shaped protrusions 16, 16 are provided on mutually opposing surfaces of both trunks 14 of the pair of gripping members 11, 11. These protrusions 16, 16 are stacked one on top of the other so that the protrusion 16 connected to the connecting member 4 is on the upper side, and are connected via a pin 17, whereby the pair of gripping members 11, 11 can rotate on the same plane perpendicular to the above-mentioned rod 2, that is, when the rod 2 is erected vertically, it can rotate within a horizontal plane. Moreover, the surfaces of the tips of the gripping parts 15 of the pair of gripping members 11, 11 that face each other are shaved. The tips of both the gripping parts 15, 15 are overlapped with each other with the tip of the gripping part 15 connected to the gripper 4 facing upward.

Further, a spring 12 is interposed at the tips of the trunks 14 of the pair of gripping members 11, 11, and urges the tips of the trunks 14 to separate from each other.
This forces the gripping portions 15 of both gripping members 11, 11 to approach each other. Further, the gripping portion 15 of the pair of gripping members 11, 11 has a plurality of four upper lid pressing members 13 bent at right angles so as to protrude toward the circular inner surface side of the gripping portion 15 at equal intervals in the circumferential direction. installed.

Next, a case will be described in which the upper cover C is attached to the upper end opening B of the steel pipe column A using the steel pipe column upper cover installation tool 1 having the above configuration. First, a pair of gripping members 1
Force is applied to both trunks 14 so that the trunks 14 of No. 1 and 11 approach each other against the biasing force of the spring 12, and the gripping parts 15 are separated, as shown in FIGS. 4 and 5. The upper surface of the upper cover C is the presser member 13
Set the upper lid C on the grip part 15 so that it is in contact with the upper lid C. At this time, the tip half portion 15 of the gripping portion 15
a and 15a are kept in a state where they overlap each other. Next, lift the lower end of the rod 2 as shown in FIG. 1, and open the upper cover C as shown in FIGS.
After guiding the rod directly above the upper end of the steel pipe column A and aligning its lower part with the upper end opening B of the steel pipe column A, the rod 2 is strongly pulled downward to fit the upper cover C to the steel pipe column A. At this time, the gripping member 11 on the side connected to the connecting member 4 is strongly pulled downward, and the gripping member 11 on the other side is also attached to the connecting member via the protrusion 16 and the tip half portion 15a of the gripping portion 15. Therefore, the downward force applied to the rod 2 is equally applied to the pair of gripping members 11, 11, and further presses the upper lid holding member 13 downward. It is uniformly transmitted to the upper surface of the upper cover C in the circumferential direction through the upper cover C, and therefore the upper cover C fits smoothly into the steel pipe column A. Further, a plurality of protrusions are provided on the inner side surface of the upper cover C in the circumferential direction, and the upper cover C is tightly fitted into the upper end opening B of the steel pipe column A via these protrusions.

In this way, the attachment of the upper cover C to the steel pipe column A is completed. Once the upper cover C is attached to the steel pipe column A, the attachment strength, that is, the frictional force between the two, is much stronger than the gripping force of the upper cover gripper 3 on the upper cover C, and therefore, after the upper cover C is attached, the rod 2 is By pushing up, the upper lid gripper 3 can be easily removed from the upper lid C attached to the steel pipe column A.

The steel pipe column top cover installation tool 1 can be used to attach the top cover gripper 3 and connecting member 4 to the pole 2 by simply loosening the bolts 10.
In addition, by simply loosening the nut 7 and pulling out the bolt 6, the rod 2 can store all of the upper tubes 5b to 5d in the large diameter tube 5a at the lower end, making it easy to transport. , when stored,
This is convenient in terms of space. In addition, the upper lid gripping tool 3
It is preferable to prepare a plurality of different sizes and attach and fix the most suitable one to the rod 2 according to the size of the upper cover C.

As described above, according to the steel pipe column top cover installation tool according to the present invention, the top cover gripping tool is provided at the tip of the pole so that the pair of gripping members can rotate on the same plane orthogonal to the pole. By holding the upper lid with the upper lid gripper, the upper lid can be positioned to the side of the rod, and therefore the upper lid can be easily guided directly above the steel pipe column. Therefore, it is possible to reliably and safely attach the upper cover to the upper end of the steel pipe column with an extremely simple operation.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing how a top cover is attached to a steel pipe column using the steel pipe column top cover installation tool according to the present invention;
Figure 2 is a front view of the rod, Figure 3 is an enlarged sectional view of the circular part in Figure 2, Figure 4 is an enlarged view of the circular part in Figure 1, and Figure 5 is a view taken in the direction of the arrow in Figure 4. , FIG. 6 is a plan view showing the top lid gripping tool. 1... Steel pipe column top cover installation tool, 2... Rod, 3...
...Top lid gripping tool, 4...Connecting member, 11...Gripping member, 12...Spring, 13...Top lid holding member, 14...Template, 15...Gripping part, 16...Protrusion, 17...Pin , A...Steel pipe column, B...Top opening, C...Top lid.

Claims (1)

[Scope of utility model registration request] It consists of a rod and a top lid gripper attached to the tip of the rod via a connecting member, and the top lid gripper holds a pair of gripping members each having a semicircular arc-shaped gripping portion formed at one end of the trunk. The gripping parts are arranged so that the arcuate inner surfaces thereof face each other, and the protrusions attached to the opposing surfaces of the two trunks so as to be close to each other are connected via a pin, so that the pair of gripping members is perpendicular to the rod. so that it can rotate on the same plane,
A steel pipe column top cover, characterized in that a biasing member is interposed between the two trunks to urge the gripping portions toward each other, and a top lid pressing member is provided on the gripping portion. Installation tools.