JPH0337734Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an automatic painting machine for poles for lighting purposes installed on expressways and the like.

Conventional technology Automatic coating machines for lighting poles are known, for example, from Japanese Patent Application Laid-Open No. 1983
As is clear from Publications No. 94363, this method has already been proposed, and is attracting attention because it eliminates the danger of working at heights and enables efficient painting work.

Problems that the invention aims to solve: However, in conventional automatic painting machines, the paint spraying nozzle is only fixedly installed on the painting machine, which causes uneven coating on the poles. There was an easy problem. This problem can be solved by installing a large number of nozzles at small intervals in the circumferential direction of the pole, but this complicates the structure and is not a preferable solution.

The present invention was made with the aim of eliminating such conventional problems.

Means for Solving the Problems The present invention is an automatic system that uses a cylindrical frame that can be assembled and disassembled and is freely fitted on the outside of a pole, and that automatically raises and lowers the frame along the pole by operating the frame on the ground. A lifting device, a large-diameter gear rotatably fitted on the outside of the frame, and a drive device for operating the large-diameter gear on the ground to swing and rotate the large-diameter gear as appropriate; The present invention relates to an automatic pole painting machine characterized by being equipped with a nozzle for spraying paint pumped from the ground onto the pole.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

Paul's automatic painting machine according to this invention can be assembled,
It is equipped with a cylindrical frame 1 which can be disassembled and is freely fitted to the outside of the pole a as appropriate.

Such a cylindrical frame 1 is composed of, for example, a pair of half bodies 11, 11, and the half body 11 has projecting edges 12, 12 in the center of the abutting portion thereof, which are appropriately connected by bolt nuts 13. ing.

The cylindrical frame 1 is equipped with an automatic lifting device 2 for operating the frame 1 on the ground and moving it up and down along the pole a.

The automatic elevating device 2 has three proximal pivots 2 at equal intervals on the inner peripheral surface of the frame 1, for example, at intervals of 120°.
A swinging arm 21 is attached to be able to swing up and down using 1a as a fulcrum, a tip roll 22 is fixed to a shaft 22a at the tip of the arm 21, and the tip roll 22 is always in pressure contact with the pole a. A spring 23 that biases the swinging arm 21 and a forward/reverse motor 24 provided on at least one of the tip rolls 22 are provided, and the motor 24 rotates the at least one tip roll 22 in the normal or reverse direction. The frame 1 can be moved up and down along a pole a. As shown, the tip roll 22
The attached swinging arms 21 are made up of a pair of upper and lower parts.
For example, three sets may be provided.

A large-diameter gear 3 is fitted on the outside of the upper end of the cylindrical frame 1 so as to be able to rotate around the frame 1 as a central axis. In order to guide the rotation of the large-diameter gear 3, a flange 14 is integrally formed at the upper end of the outer peripheral surface of the frame 1, and an annular groove 31 formed on the inner peripheral surface of the large-diameter gear 3 is formed in this flange 14. Loosely engaged. The large diameter gear 3 is
In order to be able to disassemble and assemble freely, it is composed of a pair of halves 32 and 32 as shown in FIG. One piece 34 has an insertion hole 36 with the same pin hole 35 formed on the other side, and the insertion hole 36
The insertion piece 34 is inserted into the pin holes 33 and 35, which correspond to each other in the upper and lower positions, and pins 37 are inserted and connected. In the figure, 14a is a guide groove formed on the upper surface of the flange 14, and 38 is a guide screw attached to the large diameter gear 3.

A driving device 4 for the cylindrical frame 1 is provided to swing and rotate the large-diameter gear 3 around the cylindrical frame 1 as a central axis. The drive device 4 includes a forward and reverse motor 41 and a pinion 42 that is rotated forward and backward by the motor 41, and the pinion 42 meshes with the large diameter gear 3. By controlling the number of rotations of the pinion 42 during forward and reverse rotation operations, the large-diameter gear 3 can be oscillated and rotated at a desired angle.

A nozzle 5 is provided on the large-diameter gear 3 in order to spray the paint pumped from the ground through a hose 51 onto the pole a. Nozzle 5 is shown in the figure.
Although the case where three nozzles 5 are installed at 120° intervals is shown, at least one nozzle 5 is sufficient. When one gear is installed, the large-diameter gear 3 is oscillated and rotated at an interval of 360 degrees, and when three gears are installed, the large diameter gear 3 is oscillated and rotated at an interval of 120 degrees.

The outer diameter of the pole a normally becomes gradually smaller toward the tip. The nozzle 5 can be provided with an automatic distance adjustment mechanism 6 so that the distance between the tip of the nozzle 5 and the pole a is automatically constant at all times regardless of such a difference in the outer diameter of the pole a.

The automatic spacing adjustment mechanism 6 shown in the figure consists of a spacing rod 6 which is fixedly attached to the nozzle 5 and whose tip pole caster 61a is always in contact with the outer peripheral surface of the pole a.
1, and a large diameter gear 3 fixed to the same nozzle 5.
A support rod 62 that freely passes through the support member 39 fixed on the top, and a support rod 62 that is wrapped around the support rod 62 so as to constantly draw the nozzle 5 and thus the spacing rod 61 toward the pole a side through the support rod 62. coil spring 6
3, and by the action of a coil spring 63, the tip of the spacing rod 61 can always be brought into contact with the outer peripheral surface of the pole a regardless of the difference in the outer diameter of the pole a.

When automatically painting the pole a, the automatic lifting device 2 is operated in the usual manner in the state shown in FIG. 1 to raise the cylindrical frame 1 along the pole a to its upper limit.

Next, while lowering the frame 1 by operating the automatic lifting device 2 along the pole a, at the same time, the drive device 4 is also operated to extend the large diameter gear 3 and the gear 3.
The nozzles 5 installed above are rotated at an angle corresponding to the number of installed nozzles 5, for example, in the case of three installed at equal intervals, the nozzles 5 are rotated in the usual manner at an interval of approximately 120 degrees. By spraying the paint more toward the outer peripheral surface of pole a, the purpose of automatic painting of pole a can be achieved without causing uneven coating.

Effects As described above, in the present invention, the cylindrical frame 1
The structure is such that the nozzles 5 installed in the pole A can automatically paint around the outer peripheral surface of the pole A at a rocking angle corresponding to the number of installed nozzles, thereby eliminating the occurrence of uneven coating. It can contribute to improving the performance of this type of automatic coating machine.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view showing one embodiment of the present invention and its construction situation, Figure 2 is a plan view of Figure 1, and Figure 3
The figure is an exploded perspective view showing the structure of the joint portion of the large-diameter gear. In the figure, 1 is a cylindrical frame, 2 is an automatic lifting device, 3 is a large diameter gear, 4 is a drive device, 5 is a nozzle, and 6 is an automatic interval adjustment mechanism.

Claims (1)

[Scope of utility model registration request] A cylindrical frame that can be assembled and disassembled and can be fitted freely on the outside of the pole, and an automatic lifting device that automatically lifts and lowers the frame along the pole by operating the frame on the ground, and a rotatable frame that is attached to the outside of the frame. It is equipped with a fitted large-diameter gear and a drive device for operating the large-diameter gear on the ground to swing and rotate it as appropriate. Paul's automatic painting machine is characterized by being equipped with a nozzle for spraying.