JPH0231177Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a coating device for a traveling vehicle such as a motor grader.

Prior Art Since motor graders are large-sized, workers directly weld while holding a paint gun, resulting in poor work efficiency and a poor working environment for the workers.

Purpose of the invention The purpose is to enable automatic painting of moving vehicles.

Structure of the invention: A lower painting gun is installed in the center of the pit, and side painting guns are installed on both sides so that they can move freely in the longitudinal direction.Left and right footboards are installed along the longitudinal direction of the pit, and the running vehicle is mounted on these footboards. It is equipped with a traction mechanism to drive it.

Example Figure 1 is an overall schematic plan view, and Figure 2 is a detailed vertical sectional view.
is formed, and the first pit becomes a staircase by the central low part 1a and the high parts 1b, 1b on both sides, and the central low part 1
A pair of guide rails 3, 3 are laid in the longitudinal direction, and a lower coating gun 4 is movably provided along the guide rails 3.

The lower coating gun 4 has a main body 5 with a nozzle 6 swingable in the horizontal direction, and the main body 5 is provided with wheels 7 driven by a motor (not shown). are in contact with each other.

A substantially U-shaped frame 8 is fixed to the both side high portions 1b, and a movable frame 10 is provided on this frame 8 so as to be movable in the transverse direction via rollers 9, and the movable frame 10 and the frame A moving cylinder 11 is connected to each moving frame 10, and a running footboard 12 is attached to each moving frame 10 in the longitudinal direction, and each footboard 12 has a pair of guide pieces 13, 14. are provided upright, and opposing surfaces 13a, 14a of each guide piece 13, 14 are sloped.

A side painting gun 15 is provided on the upper horizontal wall 8a of the frame 8 so as to be movable in the longitudinal direction, and the side painting gun 15 is provided with wheels 17 that are in contact with a guide rail 16 and are driven by a motor (not shown). A nozzle 20 is provided on the main body 18 by a link mechanism 19 so as to be able to swing vertically and horizontally.

A movable body 21 is provided in the second pit 2 so as to be movable in a direction perpendicular to the footboard 12, and a pulley 22 is provided in the second pit 2 at a position opposite to the first pit 1.
A wire rope 24 wound by the winch 23 is connected to the traveling vehicle B by crossing over the second and first pits 2, 1 via the pulley 22, and is used to tow the traveling vehicle B. It constitutes a mechanism.

The footboard 12 is provided with first and second limit switches 25 and 26 that are turned on by the traveling vehicle B, the frame 8 is provided with a third limit switch 27, and the movable frame 10 is provided with a dog 28. .

In FIG. 1, numerals 29 and 30 are a guide plate on the entry side and a guide plate on the exit side.

The cylinders 11, 11 for left and right movement are controlled to be supplied with pump discharge pressure oil via an electromagnetic switching valve and a flow divider valve so that they always move by the same stroke, and the electromagnetic switching valve is controlled by a third limit switch. 27, the left and right footboards 12, 12 can be positioned at predetermined positions.

Further, the winch 23 is driven by a hydraulic pressure or an electric motor, and is controlled to decelerate in response to a traveling vehicle detection signal from a first limit switch 25, and is controlled to stop by a traveling vehicle detection signal from a second limit switch 26.
The running vehicle can be positioned to a predetermined position on the footboard 12 and pulled in.

The winch 23 then pulls the traveling vehicle A to a predetermined position on the footboard 12, and in that state, the lower and side painting guns 4, 15 are moved in the longitudinal direction while the nozzles 6, 19 are oscillated to drive the vehicle. Paint each part of vehicle B.

After painting is completed, restart the winch 23, pull it in above the movable body 21, remove the wire rope 24, move the movable body 21, and remove the step board 12 shown by the imaginary line.
The vehicle B is moved from above the movable body 21 and the movable body 21 is moved back to the treadle 1 shown by the solid line.
The position is opposite to 2.

In this way, it is possible to automatically paint the traveling vehicle B without having to drive it by itself.

Furthermore, when painting traveling vehicles B of different sizes, the left and right cylinders 11 may be expanded and contracted to move the left and right movable frames 10, 10 in the lateral direction.

At this time, the third limit switch 27 and the back
8 and is positioned at a predetermined position.

Also, the opposing surfaces 13a, 1 of the guide pieces 13, 14
Since 4a is a slope, when the traveling vehicle B gets on the footboard 12, it is possible to correct some lateral positional deviation without damaging the wheels.

Effects of the invention Painting can be done automatically without the need for the vehicle to run on its own.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is an overall schematic plan view, and FIG. 2 is a detailed longitudinal sectional view. 1 and 2 are first and second pits, 4 is a lower painting gun, 12 is a footboard, 15 is a side painting gun, and B is a running vehicle.

Claims (1)

[Scope of utility model registration request] Left and right footboards 12, 12 are provided on both sides of the pit in the longitudinal direction, and a lower coating gun 4 is provided in the center of the pit so as to be movable in the longitudinal direction. A painting device for a traveling vehicle, characterized in that left and right side painting guns 15, 15 are provided movably in the longitudinal direction, and a traction mechanism for moving the traveling vehicle B along the footboard 12 is provided.