JPS61110903A - Lighting pole - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lighting pole installed at a place such as a station plaza, a parking lot, or an expressway interchange.

[Conventional technology]

As a conventional technology for lighting poles, for example,
As shown in Publication No. 3642, a plurality of pulleys are provided at the top of a pole that stands up from the ground, and one end of a wire that is passed around each pulley is attached to a lamp support that is movable up and down outside the pole. There is a configuration in which the ends are connected to balance weights arranged inside the pole, and a winding device for the winding wire connected to the balance weights is provided at the lower inside of the pole.

In the above lighting pole, by operating the winding device, the balance weight is raised and the lamp support is lowered, so maintenance and inspection work such as replacement and cleaning of the lamp supported by the lamp support can be carried out from the ground. It is extremely convenient and allows you to work safely near.

[Is it an invention? Issues to be resolved]

However, in the case of the above lighting ball, since the balance weight dermatometer is heavier than the weight of the lamp support,
A long balance weight is required.

In addition, a large-sized winding device with a large capacity is required to move the balance weight up and down, and the winding device needs to be placed on the F side of the balance weight, so the amount of lifting and lowering of the balance weight is large. Therefore, the lowering stop position of the lamp support that has been lowered by climbing on the pole becomes higher, which is disadvantageous in that the scaffolding frame must be assembled during maintenance and inspection work.

Therefore, the technical object of the present invention is to solve the above-mentioned inconvenience and to lower the lowering stop position of the lamp support to facilitate maintenance and inspection work.

[Means for solving problems]

In order to solve the above problems, this invention makes the weight of the liftable lamp support provided on the outside of the pole and the balance weight placed inside the pole approximately equal, and a pair of weights are provided at the top and bottom of the pole. A sprocket is provided, a part of the chain is connected to the balance weight, and a part of the chain is connected to the balance weight, and the drive wheel of the chain is placed near the inspection window provided at the bottom of the pole. An engagement mechanism is provided between the balance weight and the balance weight to lock and unlock the balance weight by opening and closing the opening/closing lid.

[Effect]

In the lighting pole constructed as described above, the opening/closing lid is opened to unlock the balance weight, the chain is moved by rotation of the drive wheel to raise the balance weight, and conversely, the lamp support is lowered to raise the balance weight. Maintenance and inspection work for the lamp support is performed on the ground, and since the balance weight that moves in opposite directions and the IT of the lamp support are almost equal, a short balance weight can be used as the balance weight. . Furthermore, since the balance weight is moved up and down via the chain by the rotation of the drive wheel, it is only necessary to place a sprocket for guiding the chain below the balance weight, and the amount of elevation of the balance weight can be increased. As a result, the lowering stop position of the lamp support can be brought closer to the ground, making it unnecessary to assemble a scaffolding frame for maintenance and inspection work.

〔Example〕

As shown in FIGS. 1 to 3, a plurality of pulleys 2 are provided on the upper part of a pole 1 that stands up from the ground, and one end of a wire 3 that is hung on each of the pulleys I72 is fitted on the outside of the pole 1. It is connected to a lamp support 4 that can be raised and lowered. The other end of the wire 3 is connected to a balance weight 5 arranged inside the pole 1, and the balance weight 5 and the lamp support 4 move in opposite directions relative to each other.
When the pole 1 is raised, the protrusion 6 provided on the lamp support 4 engages with the holder 7 provided on the upper part of the pole 1. The balance weight 5 and the lamp support 4 are used almost equally.

Note that 8 indicates a lighting fixture attached to the lighting fixture support 4.

A pair of sprockets 9 and 10 are rotatably supported at the upper and inner lower parts of the pole 1, and a chain 11 is extended between the upper sprocket 9 and the lower sprocket 10.
A part of the balance weight 5 is connected to the balance weight 5. A drive wheel 12 is engaged with the chain 11, and guide wheels 13 arranged above and below the drive wheel 12 are
The chain 11 is pressed against the drive wheel 12 to prevent the chain 11 from coming off the drive wheel 12.

This drive wheel 12 is arranged near an inspection window 14 provided at the bottom of the pole 1, and the opening/closing cover 15 of the inspection window 14 is
By opening the drive wheel 12, the drive wheel 12 can be rotated.

Note that the drive wheel 12 may be rotated by a handle, or may be rotated using an appropriate drive device.

In the case of FIG. 2, the opening/closing lid 15 of the inspection window 14 can be opened and closed centering on the pin 16 provided on the lower side, but it may be supported in an OT function centering on the side edge. This opening/closing lid 1
5 and the balance weight 5 is provided with an engagement device fA 20 that locks and unlocks the balance weight 5 at the lowered stop position.

Here, as the engagement mechanism 20, as shown in FIG.
A projection piece 21 is provided on the back surface of the opening/closing lid 15, and the projection piece 21 is fitted into an engagement hole 22 formed on a part of the outer peripheral surface of the balance weight 5, or as shown in FIG. Alternatively, it is possible to adopt a structure in which a protruding piece 21 provided on the back surface of the opening/closing lid 15 is engaged with an upper part of a protruding shaft 23 provided on the outer cylindrical surface of the balance weight 5. Here, it is preferable that the protruding piece 21 is provided so that its position can be adjusted in the vertical direction.

When locking the balance weight 5 by closing the opening/closing lid 15, if the balance weight 5 moves backward, the engagement 1a groove 20 may not operate. A brake plate 24 is provided to prevent the weight 5 from moving backward.

In the embodiment shown in FIG. 2, the inspection window 14 is provided at the rear of the drive wheel 12, but as shown in FIG. 5, the inspection window 14 may be provided at the side of the drive wheel 12; The inspection window 14 may be located at any position as long as the drive wheel 12 can be rotated through the inspection window 14.

Now, when opening/closing lid 15 is opened, protruding piece 21 and engaging hole 22
Also, the engagement between the protruding piece 21 and the protruding shaft 23 is released, and the balance weight 5 becomes able to move upward.

Therefore, when the drive wheel 12 is rotated through the inspection window 14 and the chain 11 is moved to raise the balance weight 5, the lamp support 4 is lowered.

Since the weights of the lamp support 4 and the balance weight 5 are almost equal, the drive wheel 12 can be rotated with extremely small rotational torque, and a short balance weight 5 can be used, so that the lamp support The body 4 can be lowered close to the ground.

During maintenance and inspection work on the lamp support 4,
After the maintenance and inspection work, the drive wheel 12 is rotated 10% in the opposite direction to lower the balance weight 5, and conversely, the lamp support 4 is raised and its After raising the lamp support 4 to the desired position, the opening/closing lid 15 is closed.

By closing the opening/closing lid 15, the protruding piece 21 moves into the engagement hole 22.
Alternatively, since it engages with the protruding shaft 23, the balance weight 5 can be locked at the lowering stop position, and the lamp support 4 can be prevented from lowering.

In the embodiment shown in FIG. 2, the chain 11 is moved by the rotation of the drive wheel 12, or as shown in FIG. 30 (9) The chain 11 may be moved by rotating the worm 31 meshing with the worm wheel 30, and the lower sprocket 10 may be used as a driving sprocket for moving the chain.

In this case, a shaft 33 is installed parallel to the shaft 32 of the worm 3° 1, and both shafts 32 and 33 are interlocked with a gear 34 to make one shaft 33.
2 may be used as a rotating shaft for driving the balance weight 5 up, and the other shaft 33 may be used as a rotating shaft for driving the balance weight 5 down.

〔effect〕

As described above, according to the present invention, since the weights of the balance weight and the lamp support are made almost equal, the length of the balance weight can be made shorter than that of the conventional balance weight, and the weight of the weight Since the weight is moved up and down by a mechanism consisting of a sprocket chain, the amount of elevation of the balance weight can be increased compared to when the balance weight is moved up and down by a winding device. Therefore, the lamp support can be lowered close to the ground, making it unnecessary to erect a scaffolding frame during maintenance and inspection work, and making maintenance and inspection work extremely easy.

Furthermore, by closing the opening/closing lid, the balance weight can be locked at the lowering stop position by the action of the engagement hk, which prevents the lamp support from lowering, making it extremely safe.

[Brief explanation of the drawing]

FIG. 11 is a front view showing one embodiment of the lighting pole according to the present invention, FIG. 2 is a longitudinal sectional front view of the same, FIG. 3 is a groove sectional plan view of the same, and FIG. 4 is another embodiment of the same. FIG. 5 is a cross-sectional plan view showing still another embodiment of the same. 1...Pole, 2...Pulley, 3...Wire, 4
...Lamp support, 5...Balance weight, 9.1
0... Sprocket, 11... Chain, 12...
Drive wheel, 14...Inspection window, 15...Opening/closing lid, 2
0...Engagement mechanism. Patent applicant Kuniyo Denko Co., Ltd. Agent Kama 1) Bun 2

Claims (1)

[Claims] Multiple pulleys are installed at the top of a pole that stands up from the ground.
In a lighting pole, one end of a connecting member such as a wire hung on each pulley is connected to a lighting fixture support provided on the outside of the pole so as to be movable up and down, and the other end is connected to a balance weight placed inside the pole. and the weight of the lamp support are approximately equal, a pair of sprockets are arranged at the upper and lower parts of the pole, and a part of the chain extending between the two sprockets is connected to the balance weight. A drive wheel is disposed near an inspection window provided at the bottom of the pole, and an engagement is provided between the opening/closing lid of the inspection window and the balance weight to lock and unlock the balance weight by opening/closing the opening/closing lid. A lighting pole characterized by having a mechanism.