JPS6010873B2 - Rust removal equipment - Google Patents

Description

[Detailed Description of the Invention] This invention, for example, removes rusted parts scattered on the hull outer plate.
This invention relates to a rust removal device capable of selectively polishing and cleaning rust.

Generally, in the early stages of rusting on a ship's hull, small areas of rust are scattered, and only the rusted areas are removed without damaging the healthy parts of the rusted coating. Ideally, the area should be repaired and then repainted. By the way, the conventional centrifugal projection type grit blasting rust removal equipment for ship hull shells is equipped with only one centrifugal projection head with a cleaning width of around IM; cannot be changed arbitrarily.

Therefore, when rusted parts are scattered on the hull outer plate, it is not possible to selectively polish only the small area of rusted parts. Also,
As another device, sandblasting is actually used,
The drawback is that a large amount of dust and abrasive materials are scattered. This invention takes the above points into consideration, and by arranging a plurality of small centrifugal projection heads with narrow widths in parallel, and remotely controlling the supply and stop of the grinding material to each head individually, At the same time, it is capable of selectively polishing and cleaning rust on partially rusted parts such as the hull outer plate, using the cleaning width formed by one centrifugal projection head as a unit. Next, the present invention will be described in detail with reference to the drawings showing one embodiment thereof.

First, in FIGS. 1 to 3, 1 is a board of the rust removal device, 2 is a motor attached to the board 1, 3 is a main pulley rotated by the motor 2, and 4 is a plurality of parts rotated by the main pulley 3. The transmission pulleys 5 are horizontal rotation shafts attached to each transmission pulley 4, and the rotation shafts 5 are arranged one above the other.

Reference numeral 6 denotes a plurality of centrifugal projection heads provided on each rotating shaft 5, each of which projects the abrasive material in the vertical direction, and each of the plurality of heads 6 forms a polishing pattern with a width in the vertical direction. are doing.

Reference numeral 7 denotes a grinding material supply tank which contains an abrasive material consisting of a grid of small particles containing crushed steel balls and supplies abrasive particles to each head 6;
Reference numeral 8 indicates a main abrasive material supply pipe through which the abrasive material flows down by gravity from the tank 7, 9 indicates a plurality of abrasive material supply branch pipes branched from the main pipe 8, and 10 indicates a flow of abrasive material from each branch pipe 9. 11 is a compressed air pipe; 12 is a plurality of compressed air jet pipes branched from the air pipe 11; A jet of compressed air is sent to the centrifugal projection head 6.

13 is a solenoid valve provided in each jet pipe 12 that opens when compressed air is jetted to the jet pipe 12; 14 is a centrifugal projection head cover provided on the substrate 1 with one side closed to prevent scattering of abrasive material and dust; 15 is a rubber cover provided on the open □ edge of the cover 14 to make the head cover 14 adhere smoothly to the hull outer plate 161; 17 is a rubber cover for the head cover 14;
An abrasive material recovery chamber formed at the bottom of the head 6 where the abrasive material projected from the head 6 falls and accumulates; The abrasive material collection pipe 19 is a grid for removing foreign matter such as rust particles mixed in the abrasive material collected by the collection pipe 18 and recovering only the abrasive material to the abrasive material supply tank 7. ,
A foreign matter chamber 201 is a foreign matter chamber into which the foreign matter that has been screened out by the two-way grid 19 falls, and 21 is a suction pipe that sucks up the foreign matter that has fallen from the dust foreign matter chamber 201 into the vacuum dust collector.

Next, in Fig. 4, 22 is a dock, 23 is a hull,
Reference numeral 24 denotes an auto-shifter that runs on a track on one side of the dock 22, 25 a jib supported by the auto-shifter 24 so that it can be freely held and rotated, and 26 a stage that is supported at the tip of the jib 25 so that it can be extended and turned. and stage 2
The board 1 is attached to the board 6.

27 is a cleaning guide formed on one side of the substrate 1; 28 is a distance sensor that measures the distance between the stage 26 and the outer plate 16 of the hull 23; 29 is provided on the auto shifter 24 and is connected to the terminal end of the suction pipe 21; This is a vacuum dust collection box.

Next, the operation of the apparatus of the above embodiment will be explained.

The auto shifter 24 is run, the jib 25 and the stage 26 are held back and rotated, and the rubber cover 15 is pressed against the outer plate 16.

On the other hand, each centrifugal projection head 6 is continuously rotating, and by feeding the abrasive material into the head 6, the abrasive material projected from each head 6 is spread out in a fan shape as shown in A in FIG. The rust can be removed by colliding with the outer panel 16 in a vertically linear pattern along the trajectory. Then, only while each head 6 passes over the rusted part B, the abrasive material is applied to the required head 6.
``Open the required solenoid valve 13 and open the jet pipe 1.''
Compressed air is ejected from 2, and the abrasive material is supplied from the abrasive material receiving pipe 10 to the head 6 by air flow conveyance. In addition, the solenoid valve 13 is closed in the head 6 in the part where the rusted part B is not present.
No abrasive material is supplied to that rod 6. The operation of each electromagnetic valve 13 is remotely controlled by visual inspection by a worker 30 on the auto shifter 24.

Incidentally, since each head 6 is covered with a head cover 14, it is not possible to directly check the positional relationship between the rusted part B and the head 6 with the naked eye, but the position where the head 6 passes and the rusted part are determined by the drill guide 27. Check the position of part B and operate the required switch of the solenoid valve 13. In this case, after operating the switch of the solenoid valve 13 at the position where the polishing guide 27 has passed, the opening and closing of the solenoid valve 13 is delayed until the head 6 actually moves to the position where the polishing guide 27 has passed. It is necessary to do so. Therefore, a delay timer is built into the electric circuit of the switch of the solenoid valve 13, and the distance between the polishing guide 27 and the head 6 is changed by the time the head 6 moves.
After the operation, the solenoid valve 13 is operated with a delay.
That is, although the operator 30 operates the electromagnetic valve 13 after confirming the rusted part B at the position of the polisher's guide 27, the rusted part B can be accurately polished. As described above, according to the rust removal device of this invention, a plurality of centrifugal projections are arranged continuously in the vertical direction and project the polishing material in the vertical direction to form a polishing pattern having a width in the vertical direction. a head, a main abrasive material supply pipe through which abrasive material flows down from an abrasive material supply tank, a plurality of abrasive material supply branch pipes branched from the main pipe, and abrasive material from each of the branch pipes. A plurality of receiving pipes for the cutting material temporarily stop the flow of the material, and jets of compressed air from the material branched from the compressed air pipe and flowing down to the respective receiving pipes are used to direct each of the centrifugal projection heads. By providing a plurality of compressed air jet pipes for feeding and a plurality of solenoid valves that are installed in each of the jet pipes and are opened and closed individually by remote control, it is possible to carry out continuous cleaning. By stopping the supply of abrasive material to the centrifugal projection head 6 at the corresponding position, parts that do not require polishing and cleaning can be selectively cleaned.

In addition, in FIG. 3, C is a part where the rusted part B has been polished, and D is a part where no rust has developed and has not been subjected to polishing treatment.

[Brief explanation of the drawing]

The drawings show one embodiment of the rust removing layer of the present invention, FIG. 1 is a partially removed front view, FIG. 2 is a partially removed left side view of FIG. 1,
FIG. 3 is a front view in a cleaning state, and FIG. 4 is a perspective view in a state of use at a dock. 6...Centrifugal projection head, 7...Grinding material supply tank, 8...Grinding material supply main pipe, 9...
- Grinding village supply branch pipe, 12... Compressed air jet pipe, 13
······solenoid valve. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 A plurality of centrifugal projection heads that are arranged in series in the vertical direction and project abrasive material in the vertical direction to form a cleaning pattern with a width in the vertical direction, and abrasive material from an abrasive material supply tank. a main abrasive material supply pipe through which abrasive material flows down, a plurality of abrasive material supply branch pipes branched from the main pipe, and a plurality of abrasive material receivers that temporarily stop the flow of abrasive material from each of the branch pipes. a stop pipe, a plurality of compressed air jet pipes that are branched from the compressed air pipe and send the abrasive material flowing down into each of the receiving pipes into each of the centrifugal projection heads using jets of compressed air; A rust removal device characterized by comprising a plurality of solenoid valves that are provided and individually opened and closed by remote control.