Ship body sand blasting treatment auxiliary device for ship repair

By designing an auxiliary device for sandblasting treatment of ship repair hulls, a buffer spring and auxiliary wheel are used to keep the blocking frame close to the hull, and a drive motor is used to collect sand, which solves the problems of sand diffusion and blockage, and improves sandblasting efficiency and safety.

CN224158284UActive Publication Date: 2026-04-24BOHAI SHIPBUILDING VOCATIONAL COLLEGE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BOHAI SHIPBUILDING VOCATIONAL COLLEGE
Filing Date
2025-05-08
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

In existing sandblasting methods, the direction of the sand is not fixed, which makes the barrier net prone to clogging and unable to effectively block some of the sand, thus affecting the safety of operators.

Method used

An auxiliary device for sandblasting treatment of ship repair hulls was designed, including a support plate, a movable frame, a connecting frame, a movable column, and a blocking frame. The blocking frame is pressed tightly against the hull using a buffer spring and an auxiliary wheel. Combined with a drive motor and blades, the device collects sand, preventing it from spreading and collecting it.

Benefits of technology

It effectively prevents sand from spreading, improves sandblasting efficiency, reduces blockage of the barrier net, ensures operational safety, and enhances the efficiency and safety of the sandblasting process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of ship repair, and provides a ship repair hull sand blasting treatment auxiliary device which comprises a supporting plate, a moving frame, a connecting frame, a moving column and a connecting piece and further comprises a mounting frame, a soft cushion layer, a first buffer spring, a moving block, a blocking frame, an auxiliary wheel, a blocking piece, a collecting box, a transmission rod and a transmission motor. The mounting frame is mounted on the right side face of the connecting piece, a soft cushion layer is mounted on the right side face of the mounting frame, the first buffer spring is mounted in the mounting frame, a moving block is slidably connected into the mounting frame, the right end of the first buffer spring is mounted on the left side face of the moving block, and the blocking frame is mounted on the outer side face of the moving block. Auxiliary wheels are rotationally connected into the blocking frames, blocking pieces are installed on the right side faces of the blocking frames, and the collecting box communicates with the lower surfaces of the blocking frames located at the bottom. According to the technical scheme, the problem that in the prior art, the sand body direction is not fixed, and parts are difficult to block is solved.
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Description

Technical Field

[0001] This utility model relates to the field of ship repair technology, specifically to an auxiliary device for sandblasting treatment of ship hulls during ship repair. Background Technology

[0002] Ship repair refers to the repair of a ship's hull and structure, machinery or equipment, outfitting or construction, and systems in a dock or shipyard to restore them to their original state or functional requirements and enable them to continue to be used. During operation, hulls and equipment will experience natural wear and tear, and certain defects will be exposed over time, resulting in damage of varying degrees. In order to ensure continued safe use, repairs must be carried out in a planned manner. Planned maintenance and repair include ship repair, minor repairs, and overhauls. During ship repair, the outer wall of the hull needs to be sandblasted to remove rust from the hull surface.

[0003] The current method involves moving the equipment to the sandblasting position, turning on the sandblasting equipment, and then sandblasting along the outer surface of the hull. However, the sand spreads outward in a mist after impacting the hull, which can easily cause operators to inhale the sand.

[0004] The existing method involves extending a connecting rod from the bottom of the sandblasting gun and setting a blocking net at one end of the connecting rod to block part of the sand. However, after prolonged use, the blocking net is prone to clogging, resulting in a significant decrease in the blocking effect.

[0005] The above-mentioned treatment method is difficult to fix the direction of sand diffusion, which makes it easy for the blocking net to miss some sand. Therefore, we propose an auxiliary device for sandblasting treatment of ship repair hulls. Utility Model Content

[0006] This utility model proposes an auxiliary device for sandblasting treatment of ship hulls in ship repair, which solves the problem in the prior art that it is difficult to block sand due to the non-fixed direction of the sand body.

[0007] The technical solution of this utility model is as follows: An auxiliary device for sandblasting treatment of ship hulls in ship repair, comprising a support plate, a movable frame, a connecting frame, a movable column, and a connecting piece, and further comprising:

[0008] The mounting bracket is installed on the right side of the connecting piece. A soft pad is installed on the right side of the mounting bracket to prevent the mounting bracket from directly hitting the hull during the movement of the blocking frame. The first buffer spring is installed inside the mounting bracket. A moving block is slidably connected inside the mounting bracket. The right end of the first buffer spring is installed on the left side of the moving block. The first buffer spring can push the moving block back to its original position, so that the auxiliary wheel is close to the hull. The blocking frame is installed on the outer side of the moving block. An auxiliary wheel is rotatably connected inside the blocking frame, so that the blocking frame can move close to the hull. A blocking plate is installed on the right side of the blocking frame to keep the gap between the auxiliary wheel and the hull constant. The collection box is connected to the lower surface of the blocking frame located at the bottom. The transmission rod is rotatably connected inside the collection box. A blade is installed on the outer surface of the transmission rod so that the blade rotates with the transmission rod to discharge the sand entering the collection box into the discharge pipe. The transmission motor is installed on the left side of the collection box.

[0009] As a preferred embodiment of the auxiliary device for sandblasting treatment of ship repair hulls described in this utility model, in order to prevent the discharge pipe from being squeezed during the rotation of the mounting frame, the lower surface of the collection box is connected to the discharge pipe, and the discharge pipe is a folded flexible hose.

[0010] As a preferred embodiment of the auxiliary device for sandblasting treatment of ship repair hulls described in this utility model, in order to facilitate the removal of collected sand by the operator, a collection box is installed on the upper surface of the support plate, a baffle plate is installed inside the collection box by bolts, and the bottom end of the discharge pipe is connected to the upper surface of the collection box.

[0011] As a preferred embodiment of the auxiliary device for sandblasting treatment of ship repair hulls described in this utility model, in order to prevent leakage of sand entering the collection box, an inclined plate is installed inside the collection box, and a notch is provided on the front side of the inclined plate.

[0012] As a preferred embodiment of the auxiliary device for sandblasting of ship repair hulls described in this utility model, in order to facilitate operators to sandblast the hull, a connecting pipe runs through the interior of the mounting frame, and the right end of the connecting pipe is connected to a discharge frame.

[0013] In a preferred embodiment of the auxiliary device for sandblasting treatment of ship repair hulls described in this utility model, the output end of the drive motor is keyed to the left end of the drive rod in order to guide the movement of the sprayed sand.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] In this invention, the blocking frame drives the moving block to move along the mounting frame, so that the blocking frame can fit tightly against the surface of the ship and prevent the sand from spreading during the sandblasting process. Then, the blades rotate along the transmission rod to guide the sprayed sand into the collection box through the discharge pipe.

[0016] In this invention, starting the push rod motor causes the output end of the push rod motor to move upward, which in turn moves the moving column upward. This causes the moving column to adjust the mounting bracket upward, expanding the sandblasting range of the components within the device and improving the sandblasting efficiency for the operator. The moving column moves upward along the connecting frame, preventing the components from shaking during movement. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the auxiliary device structure of this utility model;

[0019] Figure 2 This is a vertical sectional view of the auxiliary device structure of this utility model;

[0020] Figure 3 This is an exploded schematic diagram of the blocking device structure of this utility model;

[0021] Figure 4 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0022] In the diagram: 1. Support plate; 2. Movable frame; 3. Connecting frame; 4. Movable column; 5. Connecting piece; 6. Mounting frame; 7. Soft padding layer; 8. First buffer spring; 9. Movable block; 10. Blocking frame; 11. Auxiliary wheel; 12. Blocking piece; 13. Collection box; 14. Transmission rod; 15. Transmission motor; 16. Discharge pipe; 17. Collection box; 18. Blocking plate; 19. Inclined plate; 20. Connecting pipe; 21. Discharge frame; 22. Push rod motor; 23. Second buffer spring; 24. Self-locking caster wheel; 25. Connecting plate; 26. Counterweight bar; 27. Fixed frame; 28. Fixed frame; 29. ​​Third buffer spring; 30. Connecting ring; 31. Connecting hook rod; 32. Fixed pipe; 33. Fixed pin. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] like Figures 1-4 As shown in the figure, this embodiment proposes an auxiliary device for sandblasting treatment of ship repair hulls, including a support plate 1, a movable frame 2, a connecting frame 3, a movable column 4 and a connecting piece 5, as well as a mounting frame 6, a soft pad layer 7, a first buffer spring 8, a movable block 9, a blocking frame 10, an auxiliary wheel 11, a blocking piece 12, a collection box 13, a transmission rod 14 and a transmission motor 15.

[0025] Mounting bracket 6 is installed on the right side of connecting piece 5. A soft padding layer 7 is installed on the right side of mounting bracket 6. When the blocking frame 10 moves the moving block 9, the soft padding layer 7 contacts the hull to prevent mounting bracket 6 from directly impacting the hull surface.

[0026] The first buffer spring 8 is installed inside the mounting bracket 6, such as Figure 3 As shown, after the first buffer spring 8 is squeezed by the moving block 9, the first buffer spring 8 undergoes elastic deformation. After the moving block 9 moves to the right along the mounting frame 6, the first buffer spring 8 rebounds and pushes the moving block 9 to the right, which can prevent the blocking frame 10 from getting stuck during movement. The moving block 9 is slidably connected inside the mounting frame 6. The right end of the first buffer spring 8 is installed on the left side of the moving block 9. The blocking frame 10 is installed on the outer side of the moving block 9. The auxiliary wheel 11 is rotatably connected inside the blocking frame 10. When the auxiliary wheel 11 contacts the hull, the auxiliary wheel 11 drives the blocking frame 10 to move to the left, so that the blocking frame 10 fits the hull surface more closely and reduces the number of times the sprayed sand diffuses outward. A blocking plate 12 is installed on the right side of the blocking frame 10.

[0027] The collection box 13 is connected to the lower surface of the bottom blocking frame 10. The transmission rod 14 is rotatably connected inside the collection box 13. The outer surface of the transmission rod 14 is equipped with blades. The blades rotate as the transmission rod rotates, guiding the sand entering the collection box 13 into the discharge pipe 16, so that the sand enters the collection box 17 along the discharge pipe 16 for collection. The transmission motor 15 is installed on the left side of the collection box 13 to provide power to the transmission rod 14. The output end of the transmission motor 15 is keyed to the left end of the transmission rod 14.

[0028] like Figure 2 As shown, the lower surface of the collection box 13 is connected to the discharge pipe 16. The discharge pipe 16 is a folded flexible hose, which is stretched as the moving column 4 moves upward, so as to avoid the discharge pipe 16 being limited in length and affecting the operator's normal sandblasting. The upper surface of the support plate 1 is equipped with a collection box 17. The inside of the collection box 17 is equipped with a baffle plate 18 by bolts, which makes it easier for the operator to slide the baffle plate 18 along the collection box 17 to take out the sand in the collection box 17. The bottom end of the discharge pipe 16 is connected to the upper surface of the collection box 17.

[0029] An inclined plate 19 is installed inside the collection box 17. A notch is provided on the front side of the inclined plate 19. The sand introduced from the discharge pipe 16 passes through the notch and falls to the bottom of the collection box 14. The inclined plate 19 then blocks the sand, preventing backflow. A connecting pipe 20 runs through the inside of the mounting frame 6. The right end of the connecting pipe 20 is connected to the discharge frame 21.

[0030] In this embodiment, a movable frame 2 is slidably connected to the upper surface of the support plate 1. A connecting frame 3 is rotatably connected inside the movable frame 2. A movable column 4 is slidably connected inside the connecting frame 3. A connecting piece 5 is rotatably connected to the outer side of the movable column 4. A push rod motor 22 is installed on the bottom inner wall of the connecting frame 3. The output end of the push rod motor 22 is installed on the lower surface of the movable column 4. A second buffer spring 23 is installed inside the support plate 1. The right end of the second buffer spring 23 is installed on the left side of the movable frame 2. A self-locking universal wheel 24 is installed on the lower surface of the support plate 1 to prevent the device from shifting during normal sandblasting by the operator. A connecting plate 25 is installed on the upper surface of the support plate 1. A counterweight strip 26 is provided on the upper surface of the support plate 1 to prevent the device from shifting when the operator extends the movable column 4. When the entire frame tilts, a fixed frame 27 is slidably connected to the outer surface of the connecting frame 3. A fixed frame 28 is installed on the outer surface of the connecting frame 3. A third buffer spring 29 is installed on the lower surface of the fixed frame 28. The bottom end of the third buffer spring 29 is installed on the upper surface of the fixed frame 27. During the tilting process of the connecting frame 3, the moving frame 2 compresses the second buffer spring 23. At the same time, the fixed frame 27 slides along the connecting frame 3 to stretch the third buffer spring 29. Connecting rings 30 are installed on the left side of the fixed frame 27 and the right side of the connecting plate 25. A connecting hook rod 31 is provided inside the connecting ring 30. A fixed tube 32 is sleeved on the outer surface of the connecting hook rod 31. A fixing pin 33 passes through the outer surface of the fixing tube 32. One end of the fixing pin 33, which passes through the fixed tube 32, abuts against the connecting hook rod 31. Figure 4 As shown, when it is necessary to adjust the tilt angle of the connecting frame 3, first remove the fixing pin 33, then flip the connecting frame 3 to the right along the moving frame 2, so that the connecting hook rod 31 extends out along the inside of the fixing tube 32, and then passes through the fixing pin 33 through the fixing tube 32 to abut against the connecting hook rod 31.

[0031] In this embodiment, the device is pushed to the vicinity of the hull via the self-locking caster 24, the caster 24 is locked, and the connecting pipe 20 is connected to an external sandblasting machine. Figure 2 , 4As shown, pull out the fixing pin 33, manipulate the connecting frame 3 to rotate to the right along the moving frame 2, the rotating connecting frame 3 to the right causes the moving column 4 to rotate to the right, the rotating moving column 4 to rotate to the right causes the connecting piece 5 to rotate to the right, the rotating connecting piece 5 to rotate to the right causes the mounting frame 6 to rotate to the right, the rotating connecting frame 3 to the right causes the fixing frame 27 to rotate to the right, the rotating fixing frame 27 to the right pulls the connecting hook rod 31 out from inside the fixing tube 32, so that the auxiliary wheel 11 contacts the hull, manipulate the fixing pin 33 to pass through the fixing tube 32 and press against the connecting hook rod 31;

[0032] The sand is sprayed out of the discharge frame 21 through the connecting pipe 20 by an external sandblasting machine. The push rod motor 22 is started. The output end of the push rod motor 22 moves upward, driving the moving column 4 to move upward. The moving column 4 moves upward along the connecting frame 3. The moving column 4 moves upward, driving the connecting piece 5 to move upward. The connecting piece 5 moves upward, driving the mounting frame 6 to move upward. The mounting frame 6 moves upward, driving the blocking frame 10 to move upward. The upward movement of the blocking frame 10 causes the auxiliary wheel 11 to roll along the hull, performing sandblasting on the hull. When it moves to the hull curvature position, the auxiliary wheel 11 moves to the left, driving the blocking frame 10 to move to the left. The blocking frame 10 moves to the left, driving the moving block 9 to move to the left. The moving block 9 moves to the left along the mounting frame 6. The leftward movement of the moving block 9 compresses the first buffer spring 8, keeping the distance between the blocking frame 10 and the hull unchanged.

[0033] Start the drive motor 15. The output end of the drive motor 15 rotates, which drives the drive rod 14 to rotate. The rotation of the drive rod 14 drives the blade to rotate, which guides the sprayed sand into the collection box 13. Then, the sand is sent into the collection box 17 along the discharge pipe 16. The sand falls to the bottom of the collection box 17 through the notch on the inclined plate 19. After the processing is completed, the operator removes the baffle plate 18 and takes out the sand.

[0034] It should be noted that the connecting hook rod 31 consists of a rod body and a hook body. The rod body is located inside the fixed tube 32. During the movement, the rod body moves along the inside of the fixed tube 32. The hook body is always hung on the connecting ring 30. The soft pad layer 7 is made of sponge. The left end of the connecting tube 20 is connected to the output end of the external sandblasting machine to supply sand to the device. The auxiliary wheel 11 is partially embedded inside the blocking frame 10. The thickness of the blocking plate 12 is the same as the size of the exposed part of the auxiliary wheel 11.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for sandblasting treatment of ship repair hulls, comprising a support plate (1), a movable frame (2), a connecting frame (3), a movable column (4), and a connecting piece (5), characterized in that, Also includes: Mounting bracket (6), which is mounted on the right side of the connecting piece (5), and a padding layer (7) is mounted on the right side of the mounting bracket (6); A first buffer spring (8) is installed inside the mounting bracket (6). A movable block (9) is slidably connected inside the mounting bracket (6). The right end of the first buffer spring (8) is installed on the left side of the movable block (9). A blocking frame (10) is installed on the outer side of the moving block (9). An auxiliary wheel (11) is rotatably connected inside the blocking frame (10). A blocking plate (12) is installed on the right side of the blocking frame (10). Collection box (13), the collection box (13) being connected to the lower surface of the barrier frame (10) located at the bottom; A transmission rod (14) is rotatably connected inside the collection box (13), and blades are installed on the outer surface of the transmission rod (14). A drive motor (15) is installed on the left side of the collection box (13).

2. The auxiliary device for sandblasting treatment of ship repair hulls according to claim 1, characterized in that, The lower surface of the collection box (13) is connected to a discharge pipe (16), which is a folded flexible tube.

3. The auxiliary device for sandblasting treatment of ship repair hulls according to claim 2, characterized in that, A collection box (17) is installed on the upper surface of the support plate (1), and a baffle plate (18) is installed inside the collection box (17) by bolts. The bottom end of the discharge pipe (16) is connected to the upper surface of the collection box (17).

4. The auxiliary device for sandblasting treatment of ship repair hulls according to claim 3, characterized in that, The collection box (17) is equipped with an inclined plate (19) inside, and the front side of the inclined plate (19) is provided with a notch.

5. The auxiliary device for sandblasting treatment of ship repair hulls according to claim 1, characterized in that, The mounting bracket (6) has a connecting pipe (20) running through its interior, and the right end of the connecting pipe (20) is connected to a discharge frame (21).

6. The auxiliary device for sandblasting treatment of ship repair hulls according to claim 1, characterized in that, The output end of the drive motor (15) is keyed to the left end of the drive rod (14).