JPH05154763A - Automatic blast sweeping device for large block - Google Patents

Abstract

PURPOSE:To sharply improve the blast sweeping work of the weld locus of a double-bottom large hull block and the recovering work of a blast sweeping material and foreign objects, contribute to the improvement of the productivity of a hull, and avoid the manual work in the deteriorated work environment. CONSTITUTION:The control signal is outputted from a controller 6 based on the blast sweeping program set in advance in response to the size and shape of a large block 10, and a self-propelled bogie 1 is intermittently advanced on the lower side of the welded large block 10. A blast sweeping material is blasted for blast sweeping while the position and blasting attitude of a blast sweeping material blasting means 2 is controlled to adapt to the weld locus W, the blasted blast sweeping material and the foreign objects such as peeled slag are recovered by a recovering means 3, the blast sweeping material and the foreign objects are separated by a separating means 4, and the separated blast sweeping material is again fed to the blast sweeping material blasting means 2 by a blast sweeping material feeding means 5 to be blasted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic blasting / cleaning device for large blocks, which is mainly used for blasting / cleaning aggregate welded parts such as double-bottomed large hull blocks.

[0002]

2. Description of the Related Art Conventionally, for example, a large-scale block made of metal such as a double-bottom large-sized hull block, which has a considerably complicated shape, is used for polishing and cleaning the aggregate welded portion, and the polishing projected at the time of polishing. The collection of foreign matter such as slag that has been scraped off from the aggregate by the cleaning material and the blasting is left to the manual work of the operator. Therefore, it is inferior in the blasting workability and the recovery workability, which is one of the causes of lowering the productivity of the hull, and also has the drawback that the work environment is poor because the degree of scattering of dust etc. in the work space is high. Was there. Therefore, the development of an automatic blasting / cleaning device for large blocks that can significantly improve the blasting / cleaning workability and the avoidance of manual work in a poor working environment by saving manpower is required. ing.

[0003]

The problem to be solved is that in the present situation where the blasting and cleaning of the aggregate weld and the recovery of the blasting material and foreign matter are left to the manual work of the operator, In addition, the recovery workability is inferior, which is one of the causes of lowering the productivity of the hull, and the worker is required to perform work in a poor working environment.

[0004]

DISCLOSURE OF THE INVENTION The present invention is directed to a self-propelled carriage capable of reciprocating under a large welded block, a means for ejecting abrasive cleaning material mounted on the carriage, and mounting and attachment on the carriage. And a collecting means for collecting foreign matter such as slag exfoliated from the large block by the abrasive cleaning material and the injected abrasive cleaning material injected from the abrasive cleaning material injection means, and by the collecting means mounted on the carriage. Separation means for separating the collected polishing and cleaning material and foreign matter, polishing and cleaning material supply means for supplying the polishing and cleaning material separated from the foreign matter by this separation means to the polishing and cleaning material injection means, and a preset cleaning and cleaning program Based on the operation of the trolley and a controller for controlling the position and the injection attitude of the polishing and cleaning material injection means, characterized in that, to achieve automation of the polishing and recovery work,
The objectives are to improve the scavenging workability and the recovery workability significantly, thereby contributing to the improvement of productivity of structures (for example, hulls) and avoiding manual work in a poor working environment.

[0005]

According to the present invention, by outputting a control signal from the controller to the self-propelled carriage and the abrasive cleaning material shooting means based on the abrasive cleaning program preset according to the size and shape of the large block, A self-propelled cart intermittently moves under the large welded block. At the same time, while the position and the injection posture of the abrasive cleaning material injection means are controlled so as to match the welding trajectory, the injection of the abrasive cleaning material is executed to perform the abrasive cleaning. Abrasive material injected from the abrasive cleaning material injection means and foreign matter such as slag that has been peeled off from the large block by the injected abrasive cleaning material are collected by the collecting means and then separated into the abrasive material and foreign matter by the separating means. The separated cleaning and cleaning material is supplied again to the cleaning and cleaning material injection means by the cleaning and cleaning material supply means to execute the injection of the cleaning and cleaning material.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the overall configuration of an automatic scouring / cleaning device for large blocks according to the present invention. In FIG.
Is a self-propelled trolley, 2 is abrasive cleaning material injection means, 3 is recovery means, 4
Is a separating means, 5 is a cleaning and cleaning material supplying means, and 6 is a controller.
The self-propelled carriage 1 outputs a driving / stopping signal from the controller 6 to a prime mover (not shown), so that the floor 7
Alternatively, it is configured so that it can be advanced or retracted intermittently or continuously along the rail. The polishing / cleaning material injection means 2 is composed of an air blasting device and has a polishing / cleaning material injection nozzle 20 and a support column 22 for holding a main body 21 to which the polishing / cleaning material injection nozzle 20 is attached.
A drive mechanism (not shown) holds the column 22 so that it can move in the direction of arrow X (forward and backward), turn in the direction of arrow Y (around a vertical axis), and move in the direction of arrow Z (up and down). The polishing / cleaning material injection nozzle 20 is attached to the tip of the main body 21 by a swing mechanism (not shown) so as to be swingable. The collecting means 3 is provided below the tip of the self-propelled carriage 1 and extends in the width direction of the carriage 1.
Rotating brush 30 or magnet type belt conveyor for picking up and collecting the polishing agent and foreign matter scattered on the floor surface 7, and conveying the polishing agent and foreign matter collected by the rotating brush 30 or magnet type belt conveyor to the upper rear part. And the end of the conveyor 31 for transporting the abrasive / cleaning material and foreign matter carried by the conveyor 31 and the abrasive / cleaning material and foreign matter scattered on the upper surface of the trolley 1 to a specific location below the trolley 1. The first screw conveyor 32 arranged to extend in the width direction of the carriage 1 corresponding to the side, and the grinding and cleaning material and the foreign matter conveyed to a specific position under the carriage 1 by the first screw conveyor 32 to the carriage 1 In order to transport it to the rear of the
A second screw conveyor 33, which is arranged so as to extend in the longitudinal direction of the carriage 1 corresponding to the first screw conveyor 32.
And a bucket elevator 34 and a bucket elevator 34 that receive the polishing and cleaning material and foreign matter conveyed to the rear part of the carriage 1 by the second screw conveyor 33 and convey them upward.
It has a shout 35 arranged corresponding to the exit of the.

The separating means 4 is for separating the abrasive and cleaning material collected by the collecting means 3 and the foreign matter, and is made of a well-known separator, and is a chute 35 in the collecting means 3.
It is located corresponding to the exit. Abrasive supply means 5
Is for supplying a polishing / cleaning material (chain) to the polishing / cleaning material injection means 2, a polishing / cleaning material storage tank 50 disposed below the separating means 4, and an outlet of this polishing / cleaning material storage tank 50. Corresponding to the bucket elevator 51 that receives the abrasive cleaning material discharged from the outlet and transfers it upward, the chute 52 that is arranged corresponding to the outlet of the bucket elevator 51, and the chute 52 that corresponds to the exit of the chute 52. And an air blast tank 53 having a built-in level meter (not shown), and a passage 54 connecting the outlet of the air blast tank 53 and the inlet of the abrasive cleaning material injection means 2 to each other. Further, a controller 6 is mounted on the rear portion of the self-propelled carriage 1, and high pressure air is supplied to the dust collector 8, the air blast tank 53 of the abrasive cleaning material supplying means 5, the separating means 3 and the like adjacent to the controller 6. A compressed air supply source (air compressor) 9 to be supplied is mounted and a controller 6
According to a control signal output from the motor, the prime mover (not shown) of the self-propelled carriage 1 and the main body 2 of the abrasive cleaning material injection means 2
No. 1 drive mechanism (not shown) and abrasive cleaning material injection nozzle 20
Swinging mechanism of the rotating brush 30 in the collecting means 3,
Driving / stopping the drive mechanism (not shown) of each of the conveyor 31, the first screw conveyor 32, the second screw conveyor 33, and the bucket elevator 34, and the drive mechanism (not shown) of the bucket elevator 51 in the abrasive cleaning material supply means 5. Is controlled automatically. The drive power source and the control power source are supplied by a cable or a tire cable wound or unwound by the drum 10. Incidentally, reference numeral 11 in the drawing denotes a cover.

Next, the operation of the above configuration will be described. For example, with the open side of the welded large block 12 made of metal such as a double bottom large hull block facing downward,
It is suspended by the overhead traveling crane 13 of the factory. Then, the self-propelled trolley 1 is moved so that the automatic blasting / cleaning device for a large block is placed below the suspended large block 12. Next, based on the grinding and sweeping program preset according to the size and shape of the large block 12, the controller 6 drives the prime mover of the self-propelled carriage 1 and the drive mechanism of the main body 21 of the grinding and cleaning material injection means 2. Abrasive injection nozzle 20
Swinging mechanism of the rotating brush 30 in the collecting means 3,
Control signals are output to the drive mechanisms of the conveyor 31, the first screw conveyor 32, the second screw conveyor 33, and the bucket elevator 34, the drive mechanism of the bucket elevator 51 in the abrasive cleaning material supply means 5, and the like. As a result, the self-propelled carriage 1 intermittently advances below the welded large block 12. At the same time, so as to match the welding trajectory W of the large block 12, the abrasive cleaning material injection means 2
The polishing and cleaning material is injected while controlling the position and the injection attitude of the cleaning agent to perform the cleaning. That is, the movement or stop of the self-propelled carriage 1 and the swinging of the polishing / cleaning material injection nozzle 20 and the main body 21 to which the polishing / cleaning material injection nozzle 20 is attached appropriately move in the arrow X direction, arrow Y direction, and arrow Z direction. Alternatively, by a combined operation of being rotated, the polishing / spraying material is sprayed while the welding / spraying material injection nozzle 20 is sequentially directed to all of the welding trajectory W of the large block 12, and the welding trajectory W is ground and swept.

Abrasive material sprayed from the abrasive cleaning material injection nozzle 20 and foreign matter such as slag that has been scraped off from the welding trajectory W of the large block 12 by the injected abrasive cleaning material, are removed from the floor surface 7 and the self-propelled carriage 1. Scatters on the front. Abrasive materials such as abrasives and slag scattered on the floor 7 are collected by the collecting means 3, and then separated by the separating means 4 into abrasive materials and foreign matters.
The separated abrasive cleaning material is supplied again to the abrasive cleaning material shooting means 2 by the abrasive cleaning material supply means 5, and the abrasive cleaning material is shot. That is, the foreign substances such as the abrasive cleaning agent and the slag scattered on the floor surface 7 are scraped up and collected by the rotating brush 30 or the magnet type belt conveyor as the self-propelled carriage 1 moves, and are discharged to the conveyor 31. Is conveyed to the first screw conveyor 32. On the other hand, at least most of the abrasives and foreign matter that have fallen and scattered on the front part of the self-propelled carriage 1 are transferred from the large number of through holes 1a formed on the front part of the self-propelled carriage 1 onto the inclined guide plate 1A. Due to the vibration of the self-propelled carriage 1 and the slant guide plate 1A generated during the scouring and cleaning, the slid guide plate 1A is slid and conveyed to the first screw conveyor 32. The abrasive cleaning material and the foreign matter discharged to the first screw conveyor 32 are conveyed to a specific position on the lower side of the carriage 1 and then transferred to the second screw conveyor 33 to be conveyed to the rear portion of the carriage 1 and then to the bucket. Transferred to the elevator 34, the chute 3 is output from the outlet of the bucket elevator 34.
It is discharged to the separating means 4 through 5.

The separating means 4 separates the abrasive and the foreign matter,
The foreign matter is appropriately collected and the abrasive material is stored in the abrasive material storage tank 50 of the abrasive material supply means 5. The abrasive cleaning material stored in the abrasive cleaning material storage tank 50 is conveyed to the air blast tank 53 through the bucket elevator 51 and the chute 52 based on the level detection of the amount of the abrasive cleaning material used in the air blast tank 53. , From here passage 54
It is supplied to the polishing / cleaning material injection means 2 through the nozzle and is continuously sprayed again toward the welding locus W by the polishing / cleaning material injection nozzle 20.

According to the present invention, an aggregate welded portion having a considerably complicated shape, such as a large metal block 12 typified by a double-bottom large hull block, is sharpened and jetted at the time of sharpening. It is possible to automatically collect foreign materials such as slag and slag that has been peeled off from aggregates by blasting, without the need for manual work by the operator. It is possible to greatly improve the productivity of the hull and improve the productivity of the hull. In addition, it is possible to avoid manual work in a poor working environment and maintain the workers.

In the above embodiment, the abrasive cleaning material injection means 2 is used.
As an example, an air blasting device for injecting a polishing / cleaning material by compressed air pressure has been described, but the present invention is not limited to the above-mentioned embodiment, and centrifugal projection for projecting the polishing / cleaning material by centrifugal force. You may use a machine. Further, needless to say, the present invention can be used not only for the double-bottom large-sized hull block described in the above-described embodiment but also for cleaning other large-sized blocks made of metal.

[0013]

As described above, according to the present invention, the aggregate welded portion having a considerably complicated shape is blasted, and the blasting material injected during the blasting and the blasting is removed from the aggregate. Since foreign substances such as slag can be automatically collected without entrusting the manual work of the operator, the blasting workability and the collection workability are greatly improved, and the productivity of the hull or other structures is improved. In addition to the above, there is an advantage that the manual work in a poor working environment can be avoided and the worker can be maintained.

[Brief description of drawings]

FIG. 1 is a front view showing the overall configuration of an embodiment of the present invention.

[Explanation of symbols]

1 Self-propelled trolley 2 Air blasting device or centrifugal projector (polishing / cleaning material injection means) 3 Recovery means 4 Separation means 5 Polishing / cleaning material supply means 6 Controller 10 Large block

Claims (1)

[Claims] 1. A self-propelled trolley capable of reciprocating below a large welded block, a polishing / cleaning material injection means mounted on the trolley, and the polishing / cleaning material injection means mounted and attached to the trolley. And a foreign material such as a slag that has been peeled off from the large block by the abrasive cleaning material and the injected abrasive cleaning material, and the abrasive cleaning material and the foreign material mounted on the carriage and recovered by the collecting means. Separating means for separating the polishing and cleaning material separated from the foreign matter by the separating means to the polishing and cleaning material injection means, and the operation of the carriage based on a preset polishing and cleaning program An automatic blasting / cleaning device for a large block, comprising: a controller for controlling the position and the injection posture of the blasting / cleaning material injection means.