JPH0139767Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support structure for a retractable indicator light pole that supports indicator lights indicating airplane approach routes, traffic signs, and various other indicator lights and illumination lights at airports, for example.

There are already collapsible light poles that can be lowered to the ground for maintenance and inspection. One example is a method in which a column is hinged at one end and erected on a base plate that can be rotated upright, and the base plate is fixed with an anchor bolt. To perform maintenance and inspection of the indicator light, loosen and remove this anchor bolt, and manually tilt the column together with the base plate slowly and lay it down on the ground. If you remove it or do not know that it is loose, the column may suddenly slam into the ground, potentially damaging equipment and other equipment or causing personal injury.

It is possible to loosen the nuts on the anchor bolts so that they can be removed immediately, and then remove them all at once just before the column is toppled. A considerable amount of pressure will be applied to the anchor bolt, resulting in damage such as deformation. Also,
A situation may occur in which the nut comes off due to the pressure during the fall, making it impossible to prevent the column from falling.

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
To provide a support structure for a collapsible indicator light pole, which is equipped with a safety device to prevent the column from falling down unexpectedly even if an anchor bolt is mishandled, and whose structure is easy to operate and can be manufactured at low cost. It is in.

However, the purpose of this lever, according to the present invention, is to provide a rotating base plate which is hinged at one end to a board fixed to the ground and whose other end can be fixed with an anchor bolt, and a column is erected on the rotating base plate. In a retractable indicator light pole, this is achieved by locking one end of the rotating base plate on the opposite side to the hinged side with a bent part of a rotatable metal hook that protrudes from the base plate and is loaded with a spring. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Figure 1 is a front view of an indicator light pole using the support structure of the present invention, and Figure 2 is a cross-sectional view taken along line A-A in the figure.
1 shows a column, B shows an indicator light support that is vertically attached to the column A, and C shows a support structure on which the column A is erected.

The column A adopts a framework structure for measurement,
Using triangular frames 1-1, 1-2, ... 1-n with sheath tubes 1a provided at the corners as shown in FIG. 3a and FIG. 3b, a long I inserted shaku pipe 2 and fixed it with bolts etc. from the outside. In the figure, 2a is an outer pipe for adding on the long pipe 2, which is connected by a threaded structure. Further, the uppermost triangular frame 1-n and the triangular frame 1-n- ₁ immediately below it are each provided with a support cylinder 3 at the center, as shown in FIG. 3b.

The indicator light support B includes a center pole 4 inserted into the support tube 3 and fixed with a set screw or the like, an arm rod 6 extending laterally from the upper end of the pole 4 via a cross-shaped joint metal fitting 5, 6' and lamp support tubes 7, 7' attached to the tips thereof, all of which are interconnected with a threaded structure.

A column A to which such an indicator light support B is attached
The lowermost end of the elongated pole 2 was screwed into a support tube 9 erected at a corner of a substantially triangular base plate 8 of the support structure C that can be erected.

As shown in FIG. 2, the support structure C consists of a combination of a rectangular substrate 10 and the base plate 8, which is stacked on top of the rectangular substrate 10 and connected at one side via a hinge 11. A reinforcing plate 12 is placed.

The substrate 10 and the plate 12 are appropriately fixed in the ground with anchor bolts 13, while the base plate 8
An anchor bolt through hole 14 is formed near the corner opposite to the mounting side of the hinge 11, and an anchor bolt 15 that penetrates and projects through the board 10 from below is inserted into the hole 14 as shown in FIG. A nut 16 was screwed onto the tip. 17 in the figure is a through hole provided at the final end of this anchor bolt 15,
As shown in FIG. 5, if a wheel 18 with a lock 19 is fitted into this hole 17, the nut 16 cannot be removed from the bolt 15, thereby preventing tampering.

A partitioned small chamber 20 is integrally formed on the lower surface of the substrate 10 at a position outside the tip of the corner of the base plate 8 where the through hole 17 is provided, and the lower end of the hook bolt 21 is inserted into this chamber 20 through the substrate 10. the nut 22 attached to the lower end of the bolt 21.
A coiled spring 23 is interposed between the nut 22 and the upper surface of the small chamber 20 to bias the nut 22 downward.
The hook bolt 21 protrudes from the small chamber 20 through the substrate 10, and its protruding portion is bent at right angles in the lateral direction, and its tip is located on the side opposite to the attachment side of the hinge 11 of the base plate 8, that is, the anchor bolt through hole 14. It becomes a rotatable metal hook that locks on one end near the.

Furthermore, the corner portion of the base plate 8 and the substrate 1
Hooks 24 and 25 were respectively erected on the top of the chain 27, and a chain 27 was placed between them. Note that the length of this chain 27 is the same as that of the indicator light support B.
The condition is that the column A that supports this is supported at a predetermined angle before falling sideways on the ground.

Next, the usage and function will be explained.
To perform maintenance and inspection of the indicator lights 26, 26', 26'' provided at the upper end, release the locking of the anchor bolts 15 and hook bolts 21, and raise the base plate 8 in the direction of the hinge 11. Since the body B and the column A that supports it lie horizontally on the ground, there is no need to work at heights, and the length of the chain 27 is selected so that the column A does not fall over a predetermined angle. Work can be done without supporting the body.

When performing such work, the nut 16 of the anchor bolt 15 is first removed, but even after this is removed, the tip of the hook bolt 21 is still attached to the base plate 8, so there is a possibility that external force may be unexpectedly applied in the event of a strong wind or the like. Even if the base plate 8 is rotated around the attachment side of the hinge 11, the base plate 8 will not rise and the column A will not fall down even if the base plate 8 is tilted or released.

To remove the hook bolt 21, it is only necessary to turn it by hand about a quarter turn, which can be done quickly and with one hand, and the lock can be released after completely confirming safety.

The hook bolt 21 that has been removed can be reinstalled by pulling up the bolt 21 slightly against the spring 23 and rotating it in the opposite direction so that the tip rests on the base plate 8.

As described above, the support structure of the collapsible indicator light pole of the present invention is provided with a rotating base plate whose one end is hinged to a board fixed to the ground and whose other end can be fixed with an anchor bolt. In a retractable indicator light pole with a column mounted on a moving base plate, the column does not fall down simply by removing the anchor bolt, increasing safety.The mechanism that does this is also easy to operate and can be operated with one hand. It is highly safe because it can be done quickly.

[Brief explanation of the drawing]

Fig. 1 is a front view of an indicator light pole using the support structure of the present invention, Fig. 2 is a sectional view taken along the line A-A of the above, Fig. 3a is a sectional view taken along the line B-B of the above, and Fig. 3b is a sectional view taken along the line C- A sectional view taken along line C, Figure 4 is a sectional view taken along line D-D in Figure 2, and Figure 5 is a sectional view taken along line D-D in Figure 2.
The drawings are an enlarged sectional view of the main part in Fig. 4, Fig. 6 is an enlarged front view of the head of the anchor bolt, and Fig. 7 is a partial front view showing another example of use. A...Column body, B...Indicator light support, C...Support structure, 1-1, 1-2,...1-n...Triangular frame,
1a...Sheath pipe, 2...Long pipe, 2a...Outer pipe for addition, 3...Support tube, 4...Center pole,
5...Joint hardware, 6,6'...Arm rod, 7,7'...
Light support tube, 8... base plate, 9... support tube, 10... board, 11... hinge, 12... reinforcing plate, 13, 15... anchor bolt,
14...Anchor bolt through hole, 16...Nut, 17...Through hole, 18...Ring body, 19...
Lock, 20... Small room, 21... Hook bolt, 22
... Nut, 23 ... Volume spring, 24, 25 ... Hook, 26, 26', 26'' ... Indicator light, 27 ...
Chain.

Claims (1)

[Scope of utility model registration request] A retractable indicator light pole in which a rotating base plate is provided with one end hinged to a base plate fixed to the ground and the other end can be fixed with an anchor bolt, and a pillar is erected on the rotating base plate. A support structure for a retractable indicator light pole, characterized in that one end of the opposite side to the hinged side is locked by a bent part of a rotatable metal hook protruding from a base plate and loaded with a spring.