A polishing device for repairing a ship plate

Abstract

The application discloses a polishing device for ship plate maintenance, and belongs to the technical field of ship maintenance, which comprises a moving frame, a connecting frame is installed on the lower side of the moving frame, a polishing assembly is installed on the lower side of the connecting frame, a sliding groove is formed in the lower end of the connecting frame, an adjusting assembly is installed in the sliding groove, the adjusting assembly comprises a reciprocating screw rod which is rotatably installed in the sliding groove, the adjusting assembly further comprises a driving block which is slidably installed in the sliding groove, a guide block is rotatably installed on the inner wall of the driving block, a plurality of movable grooves are formed in the upper end of the inner wall of the sliding groove, a limiting assembly is installed in the movable groove, and the limiting assembly is used for limiting the moving distance of the driving block. The adjusting assembly can automatically adjust the position of the polishing wheel during polishing, so that the continuous polishing on the same position is avoided, the accumulation of heat is avoided, the conditions such as blueing, heating and deformation of the polishing point are avoided, and the quality of the ship plate during polishing is effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of ship repair technology, and more specifically, to a polishing device for repairing ship plates. Background Technology

[0002] As the core carrier of maritime transportation and operations, ships are subjected to harsh conditions such as seawater erosion, wind and wave impact, salt corrosion, and complex mechanical loads for a long time. Ship plates are prone to defects such as rust, scratches, and weld protrusions. In particular, the weld seams of ship plates need to be polished to achieve a smooth surface, remove welding slag and oxide layer, and ensure the structural strength, sealing performance, and subsequent anti-corrosion coating quality of the ship plates. Therefore, ship plate repair and polishing is an indispensable key process in ship inspection and maintenance, which directly affects the service life, navigation safety, and operational efficiency of ships.

[0003] Traditional polishing machines often spend too much time polishing the same spot, resulting in uneven polishing and localized over-polishing. If the polishing wheel is not moved away in time, it can cause the ship plate to overheat and become blued. When dealing with thinner ship plates, overheating can cause the metal to deform, leading to secondary damage. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a polishing device for ship plate repair.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A polishing device for ship plate repair includes a movable frame, a connecting frame installed on the lower side of the movable frame, a polishing assembly installed on the lower side of the connecting frame, the polishing assembly including a fixed frame, a speed-changing unit installed at the lower end of the fixed frame, a first drive motor installed at one end of the speed-changing unit, and a polishing wheel installed at the other end of the speed-changing unit.

[0007] The lower end of the connecting frame is provided with a sliding groove, and an adjustment component is installed inside the sliding groove. The adjustment component includes a reciprocating threaded rod rotatably installed inside the sliding groove, and a driving block slidably installed inside the sliding groove. The driving block is fixedly connected to the upper end of the fixed frame. A guide block is rotatably installed on the inner wall of the driving block, and the reciprocating threaded rod presses against the outer wall of the guide block through the groove on its surface.

[0008] The upper end of the inner wall of the slide is provided with multiple movable grooves, and a limit component is installed inside the movable groove. The limit component includes a stop block that is slidably installed inside the movable groove. The limit component is used to limit the movement distance of the moving block.

[0009] The upper side of the connecting frame has two symmetrical guide grooves, and a top block for pressing the stop block is slidably installed inside each guide groove;

[0010] Corrugated pipes are fixedly installed at the ends of the two top blocks that are close to each other, and the ends of the corrugated pipes that are away from the top blocks are fixedly connected to the inner wall of the guide groove.

[0011] A fixed cover is fixedly installed on the upper end of the connecting frame. A piston chamber is opened inside the fixed cover, and a piston plate is slidably installed inside the piston chamber. The piston plate is used to compress the air inside the piston chamber. A connecting groove is opened at the lower end of the inner wall of the piston chamber, and the connecting groove communicates with the inside of the bellows.

[0012] Furthermore, the adjustment assembly also includes a second drive motor fixedly installed on the outer wall of the connecting frame. The output end of the second drive motor extends through the outer wall of the connecting frame into the interior of the slide groove, and the output end of the second drive motor is coaxially connected to the reciprocating threaded rod.

[0013] Furthermore, a first tension spring is fixedly installed on one side of the stop block, and the upper end of the first tension spring is fixedly connected to the inner wall of the movable groove.

[0014] Furthermore, an indicator rod is fixedly installed on the other side of the upper end of the stop block, and the upper end of the indicator rod extends through the connecting frame to its upper exterior.

[0015] Furthermore, the lower ends of the top block are inclined on both sides, and the inclined portion on the top block presses against the outer wall of the stop block.

[0016] Furthermore, a lead screw is rotatably mounted on the upper end of the piston plate, and the lead screw is threadedly connected to the fixed cover. The lead screw is used to adjust the position of the piston plate.

[0017] Furthermore, piston rods are fixedly installed on both sides of the upper end of the connecting frame, and sleeve rods are sleeved on the outside of the piston rods. The sleeve rods are fixedly connected to the movable frame, and a second tension spring is fixedly installed on the upper end of the piston rods. The upper end of the second tension springs is fixedly connected to the inner wall of the sleeve rods. Two connecting pipes are installed through the outer wall of the fixed cover. The end of the connecting pipe away from the fixed cover passes through the movable frame and the sleeve rods in sequence. The piston chamber forms a ventilation channel with the inside of the sleeve rods through the connecting pipes.

[0018] Furthermore, multiple casters are fixedly installed at the lower end of the mobile frame, and multiple counterweights are fixedly installed inside the mobile frame. The mobile frame makes frictional contact with the ship plate to be repaired through the casters.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) The present invention can automatically adjust the position of the polishing wheel during the polishing process by setting the adjustment component, so as to avoid the continuous polishing of the same position, which will cause the heat to accumulate rapidly and cause the polishing point to become blued, hot, or deformed, thus effectively ensuring the quality of the ship plate during the polishing process.

[0021] (2) The present invention can adjust the movement of the piston rod during use by setting the fixed cover and piston plate, thereby changing the pressure of the polishing wheel on the ship plate. When polishing thick plates, the pressure can be increased to improve efficiency, and when polishing thin plates, the pressure can be reduced to avoid dents and over-polishing.

[0022] (3) The present invention can limit the range of motion of the moving block by setting the stop block, thereby limiting the range of motion of the polishing wheel. This can prevent the polishing wheel from moving too far, causing friction and deformation of the area around the polishing point that does not need to be polished, and can effectively protect the area around the polishing pad. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the reciprocating threaded rod portion of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the chute of the present invention;

[0026] Figure 4 This is a schematic diagram of the reciprocating threaded rod and guide block of the present invention;

[0027] Figure 5 This is a schematic diagram of the piston plate and piston cavity structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the stop block and the top block of the present invention;

[0029] Figure 7 This is a schematic diagram of the stop block and the first tension spring of the present invention;

[0030] Figure 8 This is a schematic diagram of the internal structure of the sleeve rod of the present invention;

[0031] Figure 9 This is a schematic diagram of the counterweight block structure of the present invention.

[0032] Explanation of the labels in the diagram:

[0033] 1. Movable frame; 101. Connecting frame; 102. Slide groove; 103. Movable groove; 104. Guide groove; 105. Top block; 106. Bellows; 107. Fixed cover; 108. Piston chamber; 109. Piston plate; 110. Connecting groove; 111. Lead screw; 112. Piston rod; 113. Sleeve rod; 114. Second tension spring; 115. Connecting pipe; 116. Caster wheel; 117. Counterweight;

[0034] 2. Polishing assembly; 201. Fixing frame; 202. Variable speed unit; 203. First drive motor; 204. Polishing wheel;

[0035] 3. Adjustment assembly; 301. Reciprocating threaded rod; 302. Drive block; 303. Guide block; 304. Second drive motor;

[0036] 4. Limiting component; 401. Stop block; 402. First tension spring; 403. Indicator rod. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1 to 9 A polishing device for ship plate repair includes a movable frame 1, a connecting frame 101 installed on the lower side of the movable frame 1, a polishing assembly 2 installed on the lower side of the connecting frame 101, the polishing assembly 2 includes a fixed frame 201, a speed change unit 202 installed at the lower end of the fixed frame 201, a first drive motor 203 installed at one end of the speed change unit 202, and a polishing wheel 204 installed at the other end of the speed change unit 202;

[0039] The lower end of the connecting frame 101 is provided with a slide groove 102. An adjustment component 3 is installed inside the slide groove 102. The adjustment component 3 includes a reciprocating threaded rod 301 rotatably installed inside the slide groove 102. The adjustment component 3 also includes a driving block 302 slidably installed inside the slide groove 102. The driving block 302 is fixedly connected to the upper end of the fixed frame 201. A guide block 303 is rotatably installed on the inner wall of the driving block 302. The reciprocating threaded rod 301 presses against the outer wall of the guide block 303 through the groove on its surface.

[0040] Multiple movable grooves 103 are provided on the upper end of the inner wall of the slide 102. Limiting components 4 are installed inside the movable grooves 103. The limiting components 4 are used to limit the movement distance of the driving block 302. The adjusting component 3 also includes a second drive motor 304 fixedly installed on the outer wall of the connecting frame 101. The output end of the second drive motor 304 extends through the outer wall of the connecting frame 101 into the interior of the slide 102, and the output end of the second drive motor 304 is coaxially connected to the reciprocating threaded rod 301.

[0041] The limiting component 4 includes a stop 401 that is slidably installed inside the movable groove 103. A first tension spring 402 is fixedly installed on one side of the stop 401, and the upper end of the first tension spring 402 is fixedly connected to the inner wall of the movable groove 103.

[0042] By adopting the above technical solution, in use, the position of the polishing wheel 204 is first aligned with the position to be polished. Then, the first drive motor 203 drives the speed change unit 202, which transmits power to the polishing wheel 204, causing the polishing wheel 204 to rotate. As the polishing wheel 204 rotates, it polishes the position to be polished. Simultaneously, the second drive motor 304 drives the reciprocating threaded rod 301 to rotate. After rotating, the reciprocating threaded rod 301 presses against the guide block 303 through grooves on its surface, causing the guide block 303 to move. When the guide block 303 moves, it drives the driving block 302, causing the driving block 302 to move. 2. The reciprocating motion occurs along the direction of the slide groove 102. If the stop block 401 descends, it can block the driving block 302. When the outer wall of the driving block 302 contacts the outer wall of the stop block 401, the driving block 302 will not continue to move in the original direction. At this time, the guide block 303 will move to the initial position under the action of the groove on the reciprocating threaded rod 301, thereby driving the driving block 302 to move to the initial position. This can reduce the stroke of the driving block 302, so as to polish weld seams of different widths and effectively avoid polishing in the same position, which would cause the polishing pad to heat up, deform, dent, or burn through, thus effectively ensuring the polishing quality.

[0043] An indicator rod 403 is fixedly installed on the other side of the upper end of the stop block 401. When the stop block 401 rises or falls, it can drive the indicator rod 403 to rise or fall. The staff can judge the position of the stop block 401 by observing the position of the indicator rod 403. The upper end of the indicator rod 403 extends through the connecting frame 101 to its upper exterior. Two guide grooves 104 are symmetrically opened on the upper side of the connecting frame 101. A top block 105 for pressing the stop block 401 is slidably installed in the guide grooves 104. The lower ends of the top block 105 are inclined on both sides. The inclined part on the top block 105 presses the outer wall of the stop block 401.

[0044] Two top blocks 105 are each fixedly mounted with a bellows 106 at their close ends. The end of the bellows 106 away from the top block 105 is fixedly connected to the inner wall of the guide groove 104. A fixed cover 107 is fixedly mounted on the upper end of the connecting frame 101. A piston chamber 108 is opened inside the fixed cover 107, and a piston plate 109 is slidably mounted inside the piston chamber 108. The piston plate 109 is used to compress the air inside the piston chamber 108. A connecting groove 110 is opened at the lower end of the inner wall of the piston chamber 108. The connecting groove 110 communicates with the inside of the bellows 106. A lead screw 111 is rotatably mounted on the upper end of the piston plate 109. The lead screw 111 is threadedly connected to the fixed cover 107. The lead screw 111 is used to adjust the position of the piston plate 109.

[0045] By adopting the above technical solution, when the ship plate is welded, the thicker the ship plate, the wider the gap needs to be reserved to facilitate sufficient heating of the ship plate during welding, thereby ensuring the quality of the weld. After the thick ship plate is welded, when polishing it, the lead screw 111 can be rotated, causing the lead screw 111 to move relative to the piston plate 109. Since the lead screw 111 is threadedly connected to the fixed cover 107, the lead screw 111 can drive the piston plate 109 to move. At this time, the piston plate 109 can compress the air on the lower side inside the fixed cover 107, causing the air to enter the connecting groove 110, and then enter the bellows 106 through the connecting groove 110. When the air enters the bellows 106, the air pressure in the bellows 106 increases. At this time, the bellows 106 can extend and push the top block 105 to move. When the top block 105 moves, it moves along the direction of the guide groove 104. During the movement of the top block 105, the top block 105 can squeeze the outer wall of the stop block 401 through its lower inclined part. At this time, under the action of the decomposed force of the squeezing force, the stop block 401 can move. When the stop block 401 moves, it can move along the direction of the movable groove 103. The lower end of the stop block 401 can extend out from the inside of the movable groove 103. Then, when the driving block 302 moves, the stop block 401 can block the driving block 302. When not in use, rotating the screw 111 in the opposite direction can pull the piston plate 109 to move it to the initial position and draw the air in the bellows 106 back into the piston chamber 108 through the connecting groove 110, thereby causing the bellows 106 to contract and pull the top block 105 back to the initial position.

[0046] Piston rods 112 are fixedly installed on both sides of the upper end of the connecting frame 101. A sleeve rod 113 is sleeved on the outside of the piston rod 112. The sleeve rod 113 is fixedly connected to the movable frame 1. A second tension spring 114 is fixedly installed on the upper end of the piston rod 112. The upper end of the second tension spring 114 is fixedly connected to the inner wall of the sleeve rod 113. Two connecting pipes 115 are installed through the outer wall of the fixed cover 107. The end of the connecting pipe 115 away from the fixed cover 107 passes through the movable frame 1 and the sleeve rod 113 in sequence. The piston chamber 108 forms a ventilation channel with the inside of the sleeve rod 113 through the connecting pipe 115.

[0047] By adopting the above technical solution, when the air in the piston chamber 108 is compressed, some air will enter the sleeve rod 113 through the connecting pipe 115, thereby compressing the piston rod 112 and causing the piston rod 112 to tend to descend. When the piston rod 112 tends to descend, the connecting frame 101 and the driving block 302 tend to descend as well. Therefore, the transmission unit 202 and the polishing wheel 204 tend to descend, thereby increasing the pressure between the polishing wheel 204 and the point to be polished. When polishing thicker ship plates, the pressure on the ship plates can be increased, thereby improving the polishing efficiency. When polishing thinner ship plates, the pressure on the ship plates can be relatively reduced to prevent over-polishing and dents.

[0048] Multiple casters 116 are fixedly installed at the lower end of the mobile frame 1, and multiple counterweights 117 are fixedly installed inside the mobile frame 1. The mobile frame 1 makes frictional contact with the ship plate to be repaired through the casters 116.

[0049] By adopting the above technical solution, the staff can push the mobile frame 1 to move the equipment on the ship plate under the action of the casters 116. The counterweight 117 can effectively increase the weight of the mobile frame 1 and prevent the mobile frame 1 from being lifted when the piston rod 112 tends to move relative to the sleeve rod 113.

[0050] Usage: First, use the casters 116 at the bottom of the moving frame 1 to push the device to the polishing area of ​​the ship plate to be repaired. The counterweight 117 inside the moving frame 1 ensures the overall stability of the device, preventing displacement or being lifted during operation. Then, precisely align the polishing wheel 204 with the weld seam to be polished on the ship plate. Adjust the initial parameters according to the thickness of the ship plate and the width of the weld seam. For thicker ship plates with wider weld seams, rotate the screw 111 at the top of the fixed cover 107 clockwise. The threaded engagement between the screw 111 and the fixed cover 107 causes the piston plate 109 inside the piston chamber 108 to move downwards, compressing the air inside the piston chamber 108. Some of the air enters the bellows 106 on both sides through the connecting groove 110, allowing... The bellows 106 extends and pushes the top block 105 in the guide groove 104 to move. The inclined structure at the lower end of the top block 105 presses against the outer wall of the stop block 401, overcoming the tension of the first tension spring 402 and pushing the stop block 401 out of the movable groove 103. Another part of the air enters the sleeve rod 113 through the connecting pipe 115, pressing the piston rod 112 and stretching the second tension spring 114, increasing the contact pressure between the polishing wheel 204 and the ship plate, adapting to the high-efficiency polishing requirements of thick plates. For thin plates or narrow welds, the screw 111 is rotated in the opposite direction, driving the piston plate 109 to move upward, drawing the air in the bellows 106 and sleeve rod 113 back into the piston chamber 108, the top block 105 resets, and the stop block 401 retracts into the movable groove 103 under the action of the first tension spring 402, while reducing The polishing wheel 204 applies downward pressure to prevent over-polishing and resulting in dents in the ship plate. During adjustment, the extension height of the stop 401 can be visually observed through the indicator rod 403 at the upper end of the stop 401, allowing for precise control of the movement stroke of the drive block 302. After adjustment, the first drive motor 203 and the second drive motor 304 are started simultaneously. The first drive motor 203 transmits power through the speed change unit 202, driving the polishing wheel 204 to rotate at high speed to achieve the polishing operation of the ship plate weld. The second drive motor 304 drives the reciprocating threaded rod 301 in the slide groove 102 to rotate. The reciprocating threaded rod 301, through the surface groove, compresses and drives the guide block 303 inside the block 302, pushing the drive block 302 and the bottom polishing component 2 to reciprocate along the slide groove 102. When the drive block 302 moves... When the device moves to the extended stop 401 position, the stop 401 will prevent the drive block 302 from continuing to move in the same direction. The guide block 303 will then drive the drive block 302 to reverse and reset under the action of the reciprocating threaded rod 301 groove, thereby reducing the reciprocating stroke of the drive block 302 to suit the polishing of the corresponding width of the weld. Throughout the process, the polishing wheel 204 is prevented from continuously polishing in the same position, which would cause the polishing pad to heat up, deform, dent, or even burn through the ship plate, thus ensuring the polishing quality and operational safety. After the polishing operation is completed, the first drive motor 203 and the second drive motor 304 are turned off in sequence, and the screw 111 is rotated in the opposite direction to reset each component. The stop 401 retracts into the movable groove 103, the top block 105 returns to its position, the downward pressure of the polishing wheel 204 is released, and finally the moving frame 1 is pushed to move the device away from the work area.

[0051] The above are merely preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A polishing device for ship plate repair, comprising a movable frame, characterized in that: A connecting frame is installed on the lower side of the mobile frame, and a polishing assembly is installed on the lower side of the connecting frame. The polishing assembly includes a fixed frame, and a speed change unit is installed at the lower end of the fixed frame. A first drive motor is installed at one end of the speed change unit, and a polishing wheel is installed at the other end of the speed change unit. The lower end of the connecting frame is provided with a sliding groove, and an adjustment component is installed inside the sliding groove. The adjustment component includes a reciprocating threaded rod rotatably installed inside the sliding groove, and a driving block slidably installed inside the sliding groove. The driving block is fixedly connected to the upper end of the fixed frame. A guide block is rotatably installed on the inner wall of the driving block, and the reciprocating threaded rod presses against the outer wall of the guide block through the groove on its surface. The upper end of the inner wall of the slide is provided with multiple movable grooves, and a limit component is installed inside the movable groove. The limit component includes a stop block that is slidably installed inside the movable groove. The limit component is used to limit the movement distance of the moving block. The upper side of the connecting frame has two symmetrical guide grooves, and a top block for pressing the stop block is slidably installed inside each guide groove; Corrugated pipes are fixedly installed at the ends of the two top blocks that are close to each other, and the ends of the corrugated pipes that are away from the top blocks are fixedly connected to the inner wall of the guide groove. A fixed cover is fixedly installed on the upper end of the connecting frame. A piston chamber is opened inside the fixed cover, and a piston plate is slidably installed inside the piston chamber. The piston plate is used to compress the air inside the piston chamber. A connecting groove is opened at the lower end of the inner wall of the piston chamber, and the connecting groove communicates with the inside of the bellows.

2. The polishing device for ship plate repair according to claim 1, characterized in that: The adjustment assembly also includes a second drive motor fixedly installed on the outer wall of the connecting frame. The output end of the second drive motor extends through the outer wall of the connecting frame into the interior of the slide groove, and the output end of the second drive motor is coaxially connected to the reciprocating threaded rod.

3. A polishing device for ship plate repair according to claim 2, characterized in that: A first tension spring is fixedly installed on one side of the stop block, and the upper end of the first tension spring is fixedly connected to the inner wall of the movable groove.

4. A polishing device for ship plate repair according to claim 3, characterized in that: An indicator rod is fixedly installed on the other side of the upper end of the stop block, and the upper end of the indicator rod extends through the connecting frame to its upper exterior.

5. A polishing device for ship plate repair according to claim 4, characterized in that: The lower ends of the top block are inclined on both sides, and the inclined part on the top block squeezes the outer wall of the block.

6. A polishing device for ship plate repair according to claim 5, characterized in that: A lead screw is rotatably mounted on the upper end of the piston plate. The lead screw is threadedly connected to the fixed cover and is used to adjust the position of the piston plate.

7. A polishing device for ship plate repair according to claim 6, characterized in that: Piston rods are fixedly installed on both sides of the upper end of the connecting frame. A sleeve rod is sleeved on the outside of the piston rod. The sleeve rod is fixedly connected to the moving frame. A second tension spring is fixedly installed on the upper end of the piston rod. The upper end of the second tension spring is fixedly connected to the inner wall of the sleeve rod. Two connecting pipes are installed through the outer wall of the fixed cover. The end of the connecting pipe away from the fixed cover passes through the moving frame and the sleeve rod in sequence. The piston chamber forms a ventilation channel with the inside of the sleeve rod through the connecting pipe.

8. A polishing device for ship plate repair according to claim 7, characterized in that: The lower end of the mobile frame is fixedly equipped with multiple casters, and multiple counterweights are fixedly installed inside the mobile frame. The mobile frame makes frictional contact with the ship plate to be repaired through the casters.

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