Shot peening equipment and ships

Abstract

The shot peening device is a shot peening device that projects abrasive material onto an object. It includes: a projection section that projects abrasive material; and a recovery section that recovers the projected abrasive material. The recovery section is capable of recovering the abrasive material while the projection section is projecting the abrasive material.

Description

Technical Field

[0001] This invention relates to a shot peening device and a ship. Background Technology

[0002] As a conventional shot peening device, the shot peening device described in Patent Document 1 is known. This shot peening device projects an abrasive onto objects such as the outer hull of a ship to grind the object. Furthermore, this shot peening device collects and recovers the dust generated during the grinding operation.

[0003] Previous technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Utility Model Patent Application Publication No. Sho 58-108998 Summary of the Invention

[0006] The technical problem to be solved by the invention

[0007] In addition to the device for projecting abrasives based on the aforementioned conventional technology, there is also a device for projecting abrasives that easily adhere to coatings on the ship's outer plating. By projecting abrasives, the surface area of ​​the outer plating increases, and the coating adheres more easily. Conversely, moisture or debris may adhere to the projected abrasives (which, if present, can cause rust), rendering them unusable.

[0008] Therefore, the object of the present invention is to provide a shot peening device and a ship that can reduce the amount of abrasive used and improve work efficiency.

[0009] means for solving technical problems

[0010] The shot peening device involved in this invention is a shot peening device for ships that projects abrasive material onto an object. It includes: a projection section that projects abrasive material; and a recovery section that recovers the projected abrasive material. The recovery section is capable of recovering the abrasive material while the projection section is projecting the abrasive material.

[0011] The shot peening device includes a projection section that projects abrasive material, and a recovery section that recovers the projected abrasive material. Because the shot peening device has a recovery section, it can recover the abrasive material that has been projected onto the target object, thus allowing for reuse of the abrasive material without discarding it. Furthermore, the recovery section can recover the abrasive material simultaneously with the projection of the projection section. Therefore, the shot peening device can recover the abrasive material through the recovery section before moisture or debris adheres to it after projection, without stopping the projection operation of the projection section. This reduces the amount of abrasive material used and improves work efficiency.

[0012] The recovery unit can recover abrasive particles that fall off upon contact with the target object via the projection unit. Therefore, the recovery unit can recover abrasive particles accumulated below the target object while the projection unit is projecting them.

[0013] The abrasive recovered by the recycling unit can be reused in the projection unit. This reduces the amount of abrasive used.

[0014] The projection and recovery units can perform projection and recovery within a single cargo hold. For example, when the projection and recovery units are located in multiple cargo holds (e.g., the projection unit is located in one cargo hold and the recovery units in different cargo holds), if the capacities of each cargo hold are different, the amount of abrasive recovered will differ from the amount of abrasive projected, potentially leading to insufficient abrasive recovery and projection. In contrast, when the projection and recovery units perform projection and recovery within a single cargo hold, insufficient abrasive recovery and projection can be prevented.

[0015] The recycling unit can have a mode that recycles both dust and abrasive materials, or a mode that recycles only dust. The recycling unit can switch modes as needed.

[0016] The recovery unit can be connected to the abrasive suction unit via a recovery line. A storage unit for storing abrasive can be located midway along the recovery line. Abrasive particles that fall and accumulate in the storage unit from the suction unit are stored as abrasive particles to be re-projected in the projection unit. The recovery line functions as a transport path for transmitting the suction force generated in the suction unit to the recovery unit and transferring the recovered abrasive particles to the storage unit.

[0017] The dust recovered by the recycling unit can be drawn into the storage unit by the suction unit, and then further drawn from the storage unit into the suction unit. At this point, the abrasive and dust can be separated in the storage unit.

[0018] The shot peening device may also include a replenishment unit that supplements any insufficient amount of abrasive projected by the projection unit. In this case, the replenishment unit can replenish the abrasive when it is insufficient.

[0019] The aforementioned shot peening device can be installed on a ship. In this case, the shot peening device can project abrasive material onto the structures inside the ship.

[0020] The ship involved in this invention has the above-mentioned shot peening device.

[0021] The ships involved in this invention can achieve the same effects as the shot peening devices described above.

[0022] Invention Effects

[0023] According to the present invention, a shot peening device and a ship are provided that can reduce the amount of abrasive used and improve work efficiency. Attached Figure Description

[0024] Figure 1 This is a partial cross-sectional view showing the shot peening apparatus and ship involved in the embodiments of the present invention.

[0025] Figure 2 This is a partial cross-sectional view showing the shot peening apparatus and ship involved in the embodiments of the present invention. Detailed Implementation

[0026] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Furthermore, in the following description, the same or corresponding parts will be labeled with the same symbols, and repeated descriptions will be omitted.

[0027] Figure 1 This is a partial cross-sectional view showing a shot peening apparatus and a ship according to an embodiment of the present invention. The shot peening apparatus 1 is a device for coating an object by projecting abrasive material onto it. Figure 1 As shown, a shot peening device 1 is installed on a ship 100. The shot peening device 1 projects abrasive material onto the structures inside the ship 100. The shot peening device 1 includes a projection section 2, a recovery section 3, a suction section 4, a storage section 6, and a replenishment section 7. Furthermore, the shot peening device 1 includes: a line L1 connecting the recovery section 3 and the storage section 6; a line L2 connecting the storage section 6 and the suction section 4; a line L3 connecting the replenishment section 7 and line L1; and a bypass line L4 connecting line L1 and line L2. In the shot peening device 1, the abrasive material recovered by the recovery section 3 is reused in the projection section 2. Moreover, the projection section 2 and the recovery section 3 can perform projection and recovery within a single cargo hold.

[0028] The projection unit 2 is a device for projecting abrasive. The projection unit 2 includes a spraying device 11, a shot peening nozzle 15, and a shot peening hose 13. The spraying device 11 is a device that applies pressure to the abrasive supplied from the storage unit 6. The spraying device 11 is installed on the deck 101 of the ship 100. The shot peening hose 13 is connected to the spraying device 11 and extends towards the interior of the ship 100. The shot peening hose 13 is a hose that conveys the pressurized abrasive from the spraying device 11 into the interior of the ship 100. A shot peening nozzle 15 is provided at the end of the shot peening hose 13. The shot peening nozzle 15 is a component that forms a projection port for projecting the abrasive conveyed via the shot peening hose 13 onto an object. Operators can hold the shot peening nozzle 15 and project the abrasive onto the desired location on the ship 100. Alternatively, the shot peening nozzle 15 can be installed on a traveling carriage or the like, in which case the shot peening nozzle 15 moves along with the traveling carriage while projecting the abrasive. In this embodiment, the projection unit 2 is equipped with two spraying devices 11, each of which has two sets of shot peening hoses 13 and shot peening nozzles 15, but their number is not particularly limited.

[0029] The recovery unit 3 is a device for recovering the projected abrasive. The recovery unit 3 recovers the abrasive that falls off after hitting the projected target via the projection unit 2. The recovery unit 3 is connected to the suction unit 4, which draws in the abrasive, via lines L1 and L2. Therefore, the recovery unit 3 recovers the abrasive using the suction force from the suction unit 4. The recovery unit 3 includes a manifold 14, a floor brush 16, and recovery hoses 17. The manifold 14 is a connector connecting line L1 to multiple recovery hoses 17. The manifold 14 is installed on the deck 101 of the vessel 100. The manifold 14 is a tubular component extending horizontally, having connecting portions 14a that connect the recovery hoses 17 at predetermined intervals along its length. The recovery hoses 17 connected to the connecting portions 14a extend toward the interior of the vessel 100. The recovery hoses 17 are hoses that convey the abrasive drawn in by the floor brush 16 toward the manifold 14. The floor brush 16 is provided at the end of the recovery hose 17. Floor brush 16 is a device for cleaning and collecting abrasive material after it has been applied to an object. Workers can keep floor brush 16 in place on the desired area of ​​the vessel 100 to clean and suck up the abrasive. Alternatively, floor brush 16 can be mounted on a traveling trolley or similar device, in which case floor brush 16 moves along with the traveling trolley while collecting the abrasive.

[0030] Additionally, a replenishment port 14b is provided at the end of the manifold 14. A flexible hose (not shown) is connected to the replenishment port 14b, which can draw abrasive from an abrasive box or similar object located outside the vessel 100. For example, in cases where abrasive cannot be retrieved from inside the vessel 100 from the floor brush 16, the replenishment port 14b can draw abrasive from outside the vessel 100 as an emergency measure.

[0031] The suction unit 4 is a device that generates suction force to draw abrasive material from the recovery unit 3. The suction unit 4 is installed on the deck 101 of the ship 100. For example, the suction unit 4 includes a vacuum recovery machine 18 that generates suction force by setting its interior to a vacuum state. In this embodiment, the suction unit 4 includes two vacuum recovery machines 18, but the number is not particularly limited. The suction unit 4 is connected to the manifold 14 of the recovery unit 3 via line L2, the internal space of the storage unit 6, and line L1. That is, the suction force generated in the suction unit 4 is transmitted to the manifold 14 of the recovery unit 3 and then to the floor brush 16 via the recovery hose 17. With this structure, line L2 and line L1 constitute a recovery line L10 for recovering abrasive material and its contained dust within the ship 100.

[0032] Storage section 6 is a device for storing abrasive. Storage section 6 consists of a collection tank that stores abrasive within its internal space. Storage section 6 is located midway along the recovery line L10, specifically between line L1 and line L2. Lines L1 and L2 are located at the upper end 6b of storage section 6. A replenishment air damper 21 is provided near the upper end 6b of storage section 6 for lines L1 and L2. Furthermore, when the shot peening device 1 starts operating, the top cover of storage section 6 is opened to supply new abrasive.

[0033] The storage section 6 is located at a position extending upwards from the deck 101 of the ship 100 and is positioned above the spraying device 11 of the projection section 2. A hopper 6a is provided at the lower end of the storage section 6 to concentrate the abrasive stored within its internal space. The hopper 6a is connected to each spraying device 11 via a distribution section 22 for distributing the abrasive to each spraying device 11. The distribution section 22 has a structure where a flow path extending from an opening at the bottom of the hopper 6a branches into two flow paths. Each flow path of the distribution section 22 is connected to each spraying device 11 via a supply damper 23. The storage section 6 is supported by a frame 25, and the spraying devices 11 are disposed inside the frame 25. Thus, the storage section 6 and the spraying devices 11 are compactly configured as a single unit.

[0034] Here, the interface of the abrasive stored in the storage unit 6 is designated as "F". At this time, a space SP is formed between the interface F and the upper end 6b. The abrasive recovered by the recovery unit 3 is supplied to the space SP of the storage unit 6 via line L1. At this time, abrasive particles of a specified size fall into the space SP and accumulate on the interface F. On the other hand, smaller particles are drawn into line L2 as dust by the suction force from line L2. Thus, the abrasive particles that fall into the storage unit 6 and accumulate therefrom, drawn into the suction unit 4, are stored as abrasive particles that are re-projected into the projection unit 2. Meanwhile, the dust recovered by the recovery unit 3 is drawn into the storage unit 6 via the suction unit 4 and further drawn from the storage unit 6 into the suction unit 4. Furthermore, particles smaller than 106 μm are drawn into line L2 as dust, while larger particles accumulate on the interface F as abrasive. Regarding the suction force generated in suction unit 4 at this time, the output of the vacuum recovery machine can be set to 75kW, the vacuum pressure can be set to -60kPa, and the maximum air volume can be set to 45m³ / h. 2 / min.

[0035] As described above, the suction force generated by the suction unit 4 via the recovery line L10 for the recovery unit 3 is independent of the action of the projection unit 2 ejecting the abrasive supplied from the storage unit 6. That is, the recovery unit 3 can recover the abrasive regardless of whether the projection unit 2 is projecting. Therefore, the recovery unit 3 can recover the abrasive while the projection unit 2 is projecting it.

[0036] The replenishment unit 7 is a device for replenishing insufficient amounts of abrasive projected by the projection unit 2. The replenishment unit 7 includes: a tank 31 for storing abrasive; and a replenishment damper 32, which is installed on line L3 connecting the tank 31 and line L1. When the abrasive in the storage unit 6 is insufficient, the replenishment unit 7 opens the replenishment damper 32. As a result, the abrasive in the tank 31 falls from the tank 31 onto line L1 and is drawn in, thereby supplying it to the storage unit 6.

[0037] A bypass damper 33 is installed on the bypass line L4 connecting line L1 and line L2.

[0038] Next, the operation of the shot peening device 1 will be explained. Figure 1 The arrows shown indicate the flow of abrasive and dust recovered by the recovery unit 3. On the other hand, Figure 2 The arrows shown indicate the flow of dust when only dust is being recovered. Thus, the recovery unit 3 has a mode that recovers both dust and abrasive, and a mode that recovers only dust.

[0039] like Figure 1As shown, during the abrasive recovery process by the recovery unit 3, the replenishment damper 21 and the supply damper 23 are opened, while the replenishment damper 32 and the bypass damper 33 are closed. Furthermore, the spraying device of the projection unit 2 and the vacuum recovery machine 18 of the suction unit 4 are activated. As a result, abrasive is projected from the shot peening nozzle 15 of the projection unit 2. Meanwhile, the floor brush 16 of the recovery unit 3 sucks up and recovers the abrasive within the ship 100.

[0040] The abrasive and dust recovered by the recovery unit 3 are supplied to the storage unit 6 via line L1. The abrasive falls from the upper end 6b of the storage unit 6 into the space SP and accumulates on the interface F. On the other hand, the dust is further drawn from the storage unit 6 to the suction unit 4 via line L2. Thus, the projected abrasive is stored again in the storage unit 6, and the dust is recovered to the vacuum recovery machine 18. If insufficient circulating abrasive is detected, the replenishment unit 7 opens the replenishment damper 32, causing new abrasive in the tank 31 to fall into line L1. The new abrasive falling into line L1 is drawn into the storage unit 6 and falls and accumulates on the interface F.

[0041] like Figure 2 As shown, when only dust is being recovered by the recovery unit 3, the replenishment damper 21, supply damper 23, and replenishment damper 32 are closed, and the bypass damper 33 is opened. Then, the vacuum recovery machine 18 of the suction unit 4 is started. As a result, the floor brush 16 of the recovery unit 3 sucks up and recovers the dust inside the ship 100. The dust recovered by the recovery unit 3 then bypasses to line L2 via line L1 and bypass line L4, and is recovered by the vacuum recovery machine 18 of the suction unit 4.

[0042] Next, the effects of the shot peening device 1 and the ship 100 involved in this embodiment will be explained.

[0043] The shot peening device 1 includes: a projection section 2 for projecting abrasive material; and a recovery section 3 for recovering the projected abrasive material. Because the shot peening device 1 includes the recovery section 3, it can recover the abrasive material projected onto the target object, thus allowing for reuse of the abrasive material without discarding it. Furthermore, the recovery section 3 can recover the abrasive material simultaneously with the projection section 2. Therefore, the shot peening device 1 can recover the abrasive material via the recovery section 3 before moisture or debris adheres to the projected abrasive material without stopping the projection operation of the projection section 2. This reduces the amount of abrasive material used and improves work efficiency.

[0044] Furthermore, in conventional shot peening equipment, the operations of projecting abrasive from the blasting device 11 via the storage unit 6, collecting the abrasive in a collection tank using a vacuum cleaner and placing it into a flexible container for disposal, and placing the abrasive from the flexible container into the storage unit 6 using a crane are performed as independent operations. This results in low work efficiency due to the independent nature of each operation. In contrast, the shot peening equipment 1 of this embodiment is configured such that projecting, collection, storage, and replenishment are unitized into a single device. Therefore, the shot peening equipment 1 can recycle and reuse abrasive without stopping the cycle of projecting, collection, storage, and replenishment, thereby reducing workload and saving costs. Moreover, the work can be completed inside the vessel 100, allowing for 24 / 7 operation regardless of weather conditions. For example, the budgeted abrasive usage of conventional shot peening equipment is 2.82 times the actual usage, but with the shot peening equipment 1 of this embodiment, this can be reduced to 1 or less. Furthermore, by using the shot peening apparatus 1 according to this embodiment, the abrasive replenishment time (i.e., 20 hours) in conventional shot peening apparatus can be shortened to less than 5 hours.

[0045] The recovery unit 3 can recover abrasive particles that fall off when they hit the projection target via the projection unit 2. Thus, the recovery unit 3 can recover abrasive particles that have accumulated below the projection target while the projection unit 2 is projecting the abrasive particles.

[0046] The abrasive recovered by the recovery unit 3 can be reused in the projection unit 2. This reduces the amount of abrasive used.

[0047] The projection unit 2 and the recovery unit 3 can perform projection and recovery within a single cargo hold. For example, if the projection unit 2 and the recovery unit 3 are installed in multiple cargo holds (e.g., the projection unit 2 is installed in one cargo hold and the recovery unit 3 in another), and the capacities of each cargo hold differ, the amount of abrasive recovered will differ from the amount of abrasive projected, potentially leading to insufficient abrasive recovery and projection. In contrast, when the projection unit 2 and the recovery unit 3 perform projection and recovery within a single cargo hold, insufficient abrasive recovery and projection can be prevented.

[0048] The recycling unit 3 can have a mode that recycles both dust and abrasive, and a mode that only recycles dust. In this case, the recycling unit 3 can switch modes as needed.

[0049] The recovery unit 3 can be connected to the suction unit 4, which sucks up abrasive, via the recovery line L10. A storage unit 6 for storing abrasive can be provided midway along the recovery line L10. Abrasive that falls and accumulates in the storage unit 6 from the suction unit 4 is stored as abrasive to be re-projected in the projection unit 2. The recovery line L10 functions as a transport path for transmitting the suction force generated in the suction unit 4 to the recovery unit 3 and for moving the abrasive recovered by the recovery unit 3 to the storage unit.

[0050] The dust recovered by the recovery unit 3 can be drawn into the storage unit 6 by the suction unit 4, and further drawn from the storage unit 6 into the suction unit 4. At this time, the abrasive and dust can be separated in the storage unit 6.

[0051] The shot peening device 1 may also include a replenishment unit 7, which replenishes any insufficient amount of abrasive projected by the projection unit 2. In this case, the replenishment unit 7 can replenish the abrasive when it is insufficient.

[0052] The shot peening device 1 described above can be installed on the ship 100. In this case, the shot peening device 1 can project abrasive material onto the structures inside the ship 100.

[0053] The ship 100 involved in this embodiment has the shot peening device 1 described above.

[0054] The ship 100 described in this embodiment can achieve the same effect as the shot peening device 1 described above.

[0055] The present invention is not limited to the embodiments described above.

[0056] For example, in the above embodiments, the shot peening device is installed on a ship; however, it can also be applied to shot peening devices at general construction sites such as factories or bridges.

[0057] Furthermore, the configuration of the above-mentioned components is an example, and appropriate changes can be made as long as they do not depart from the spirit of the present invention.

[0058] Symbol Explanation

[0059] 1-Shot peening device, 2-Projection section, 3-Recovery section, 4-Suction section, 6-Storage section, 7-Replenishment section, 100-Boat, L10-Recovery line.

Claims

1. A shot peening device, which is a shot peening device for ships, and which projects abrasive material onto a target object, characterized in that, have: Storage section, which is used to store abrasive materials; A projection unit, which is connected to the storage unit, projects the abrasive material through a shot peening nozzle; The recovery unit, which is separately disposed from the shot peening nozzle, recovers the projected abrasive material; as well as A suction section, which is integrally disposed with the projection section, suctions the abrasive material via the recovery section; The recovery unit is connected to the storage unit via a first line, the storage unit is connected to the suction unit via a second line, the first line and the second line are connected via a bypass line, and the bypass line is equipped with a bypass air damper; The actions performed by the projection section and the actions performed by the recovery section are independent of each other, and the recovery section can recover the abrasive while the projection section is projecting the abrasive. The recycling unit can switch between a mode that recycles both dust and abrasive materials and a mode that only recycles dust. In the aforementioned dust and abrasive recovery mode, dust and abrasive are recovered via the storage unit. In the dust-only recovery mode, the dust recovered by the recovery unit passes through the first line and then bypasses to the second line via the bypass line, thus only recovering dust. Specifically, by closing the bypass damper of the bypass line, the system switches to the mode for recovering dust and abrasive materials. By opening the bypass damper of the bypass line, the system switches to the mode that only recovers dust.

2. The shot peening device according to claim 1, characterized in that, The recovery section recovers the abrasive material that falls off upon contact with the projection object after passing through the projection section.

3. The shot peening apparatus according to claim 1 or 2, characterized in that, The abrasive recovered by the recycling unit is reused in the projection unit.

4. The shot peening apparatus according to claim 1 or 2, characterized in that, The projection unit and the recovery unit are deployed and recovered within a cargo hold.

5. The shot peening apparatus according to claim 1 or 2, characterized in that, The recovery unit is connected to the suction unit via a first line and a second line. The storage unit is provided between the first line and the second line. The abrasive particles that fall off and accumulate in the storage section after being drawn in by the suction section are stored as abrasive particles to be re-projected in the projection section.

6. The shot peening device according to claim 5, characterized in that, In the mode of recovering dust and abrasive, the dust recovered by the recovery unit is drawn into the storage unit by the suction unit, and further drawn from the storage unit into the suction unit.

7. The shot peening apparatus according to claim 1 or 2, characterized in that, It also includes a replenishment section that replenishes any insufficient amount of abrasive material projected by the projection section.

8. The shot peening apparatus according to claim 1 or 2, characterized in that, The shot peening device is installed on the ship.

9. A ship, characterized in that, The shot peening apparatus having any one of claims 1 to 8.

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