Marine blade grinding and polishing equipment

Abstract

The invention discloses marine paddle grinding and polishing equipment, and relates to the technical field of marine paddle maintenance. The paddle drives the grinding sand to flow, and the flowing grinding sand can generate friction on the surface of the paddle, so that grinding and polishing of the paddle are realized, and meanwhile, the curved surface contour of the paddle does not need to be considered; a meshing groove is matched with a meshing pin, so that the mounting work of the paddle before grinding and polishing is simpler and quicker, and the polishing efficiency of the paddle is improved; and through the arranged driving assembly, when the grinding driving motor stops working, the meshing pin can rotate to the initial default vertical position, and therefore the blade can be ground next time conveniently.

Description

Technical Field

[0001] This invention relates to the field of marine propeller maintenance technology, specifically to a marine propeller grinding and polishing equipment. Background Technology

[0002] Marine propeller blades often retain corrosion, marine organisms, and other impurities, necessitating polishing to improve surface smoothness and corrosion resistance. Polishing repairs damage caused by cavitation corrosion, erosion corrosion, and electrochemical corrosion, extending blade lifespan. It also removes contaminants from seawater, oil, and microorganisms, improving surface smoothness and streamlined shape, thus reducing ship drag.

[0003] Currently, there is an invention patent with publication number CN107081658A, which discloses a technical solution for a blade surface grinding device. This solution can automatically plan the grinding path for the blade, adapt to complex blade surfaces, and automatically adjust the tilt angle of the conical grinding wheel to keep the conical generatrix of the conical grinding wheel consistent with the blade surface. At the same time, it can control the grinding force within a set range, thus achieving high grinding accuracy. However, its grinding structure is too complex and it cannot grind blades with different curved surfaces. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: a marine propeller grinding and polishing device, comprising a grinding section, the grinding section including a grinding pool, the grinding pool containing grinding sand, two parallel lifting slides fixedly installed at the bottom of the grinding pool, lifting support blocks slidably installed on the lifting slides, and a grinding drive shaft rotatably installed on the lifting support blocks, a clamping telescopic cylinder fixedly installed on the grinding pool for clamping the propeller blades onto the grinding drive shaft; and a drive assembly, the drive assembly including a base and a rotating disk support, wherein a grinding drive shaft is fixedly installed inside the grinding pool. The device is equipped with a drive shaft bracket, on which a drive shaft is rotatably mounted. One end of the drive shaft is fixedly mounted with a stationary permanent magnet fixing disk and a rotating disk. The stationary permanent magnet fixing disk and the rotating disk are rotatably mounted on both sides of the rotating disk bracket. Two moving permanent magnets are symmetrically embedded on the stationary permanent magnet fixing disk. Two stationary permanent magnets with corresponding magnetic attraction to the two moving permanent magnets are also fixedly mounted on the grinding pool. A sliding block is fixedly mounted on the rotating disk. An outer drive sleeve is fitted on the outer surface of the sliding block. A meshing pin is fixedly set on the drive shaft. A meshing groove is opened on the grinding drive shaft to slide with the meshing pin.

[0005] Preferably, the end of the telescopic rod of the clamping telescopic cylinder is rotatably engaged with the blade, and the blade is fixedly engaged with the grinding drive shaft.

[0006] Preferably, a sliding sleeve bracket is fixedly installed on the grinding pool, a slide rail frame is fixedly installed on the sliding sleeve bracket, a sliding block is slidably installed on the slide rail frame, and a sliding sleeve is fixedly installed on the sliding block.

[0007] Preferably, the sliding sleeve support is fitted onto the outer surface of the sliding sleeve, and the sliding sleeve and the sliding sleeve support are slidably engaged. The sliding block and the lifting support block are movably connected through a lifting linkage.

[0008] Preferably, the grinding part further includes a lead screw support frame, on which a pulley and a lead screw are rotatably mounted, and the lead screw and the pulley are driven by a transmission belt.

[0009] Preferably, the sliding sleeve is fitted onto the outer surface of the lead screw, and the sliding sleeve is threadedly engaged with the lead screw. A lifting drive motor for driving the pulley to rotate is fixedly installed on the lead screw support frame.

[0010] Preferably, at least two sliding sleeve blocks are fixedly installed on the surface of the outer drive sleeve, a grinding drive motor is fixedly installed on the platform, a sliding pin bracket is fixedly installed on the output shaft of the grinding drive motor, and the sliding pin bracket is fixedly installed with the same number of sliding pins as the sliding sleeve blocks, and the sliding pins slide in engagement with the sliding sleeve blocks.

[0011] Preferably, the lead screw support frame is fixedly installed on the platform, and the movable block is symmetrically provided with two clearance surfaces, an inclined surface and a support surface. Each of the inclined surfaces is connected with a friction pin tube, and an elastic component is fixedly provided between the friction pin tube and the support surface.

[0012] Preferably, each of the friction pin tubes has an actuating pin attached to its surface, and all the actuating pins are fixedly mounted on the rotating disk.

[0013] Compared with the prior art, the present invention has the following advantages: (1) The present invention drives the abrasive sand to flow through the blade itself, and the flowing abrasive sand will generate friction on the blade surface, thereby achieving the polishing of the blade, without having to consider the blade surface profile; (2) The present invention sets up the engagement groove and engagement pin, making the installation of the blade before polishing simpler and faster, thereby improving the polishing efficiency of the blade; (3) The drive component set up in the present invention allows the engagement pin to rotate to the initial default vertical position when the polishing drive motor stops working, thereby facilitating the next polishing of the blade. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the internal structure of the grinding tank of the present invention.

[0016] Figure 3 This is a schematic diagram of the meshing groove structure of the present invention.

[0017] Figure 4 This is a schematic diagram of the driving component structure of the present invention.

[0018] Figure 5 This is a side view of the drive component structure of the present invention.

[0019] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0020] Figure 7 This is an exploded view of the drive component structure of the present invention.

[0021] In the diagram: 101-Grinding tank; 102-Clamping telescopic cylinder; 103-Lifting slide bar; 104-Lifting support block; 105-Lifting drive motor; 106-Grinding drive shaft; 1061-Meshing groove; 107-Lifting connecting rod; 108-Sliding block; 109-Slide rail frame; 110-Sliding sleeve; 111-Lead screw; 112-Transmission belt; 113-Pulley; 114-Sliding sleeve bracket; 115-Lead screw support frame; 201-Platform; 202-Grinding drive motor; 203-Rotation 204-Stationary permanent magnet; 205-Drive shaft bracket; 206-Drive shaft; 2061-Meshing pin; 207-Stationary permanent magnet fixing disc; 208-Moving permanent magnet; 209-Rotating disc; 210-Walking block; 2101-Allowing surface; 2102-Inclined surface; 2103-Supporting surface; 211-Outer drive sleeve; 212-Sliding sleeve block; 213-Sliding pin; 214-Sliding pin bracket; 215-Elastic component; 216-Friction pin tube; 217-Actuating pin; 3-Blade. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-7 The technical solution of the present invention will be further illustrated through specific embodiments.

[0023] This invention provides a marine propeller grinding and polishing device, including a grinding section. The grinding section includes a grinding tank 101, which contains grinding sand. Two parallel lifting slide rods 103 are fixedly installed at the bottom of the grinding tank 101. A lifting support block 104 is slidably installed on the lifting slide rods 103, and a grinding drive shaft 106 is rotatably installed on the lifting support block 104. A clamping telescopic cylinder 102 is also fixedly installed on the grinding tank 101. The clamping telescopic cylinder 102 is used to clamp the propeller blade 3 onto the grinding drive shaft 106. The end of the telescopic rod of the clamping telescopic cylinder 102 is rotatably engaged with the propeller blade 3, and the propeller blade 3 is fixedly engaged with the grinding drive shaft 106. A sliding sleeve bracket 114 is fixedly installed on the grinding tank 101. A slide rail frame 109 is fixedly installed on the sliding sleeve bracket 114. A sliding block 108 is slidably installed on the slide rail frame 109, and a sliding sleeve 110 is fixedly installed on the sliding block 108. A sliding sleeve support 114 is fitted onto the outer surface of a sliding sleeve 110, and the sliding sleeve 110 and the sliding sleeve support 114 are in sliding engagement. A sliding block 108 and a lifting support block 104 are movably connected via a lifting connecting rod 107. The grinding section also includes a lead screw support frame 115, on which a pulley 113 and a lead screw 111 are rotatably mounted. The lead screw 111 and the pulley 113 are in transmission engagement via a transmission belt 112. A sliding sleeve 110 is fitted onto the outer surface of the lead screw 111, and the sliding sleeve 110 and the lead screw 111 are threaded together. A lifting drive motor 105 for driving the pulley 113 to rotate is fixedly mounted on the lead screw support frame 115.

[0024] The drive assembly includes a platform 201 and a rotating disk support 203. A drive shaft support 205 is also fixedly installed inside the grinding pool 101. A drive shaft 206 is rotatably mounted on the drive shaft support 205. A static permanent magnet fixing disk 207 and a rotating disk 209 are fixedly mounted on one end of the drive shaft 206. The static permanent magnet fixing disk 207 and the rotating disk 209 are rotatably mounted on both sides of the rotating disk support 203. Two moving permanent magnets 208 are symmetrically embedded on the static permanent magnet fixing disk 207. Two static permanent magnets 204 with corresponding magnetic attraction to the two moving permanent magnets 208 are also fixedly installed on the grinding pool 101. A sliding block 210 is fixedly installed on the rotating disk 209. An outer drive sleeve 211 is fitted on the outer surface of the sliding block 210. A meshing pin 2061 is fixedly installed on the drive shaft 206. A meshing groove 1061 is opened on the grinding drive shaft 106 to slide with the meshing pin 2061. At least two sliding sleeve blocks 212 are fixedly mounted on the surface of the outer drive sleeve 211. A grinding drive motor 202 is fixedly mounted on the platform 201. A sliding pin bracket 214 is fixedly mounted on the output shaft of the grinding drive motor 202. The sliding pin bracket 214 has the same number of sliding pins 213 as the sliding sleeve blocks 212, and the sliding pins 213 slide in contact with the sliding sleeve blocks 212. A lead screw support frame 115 is fixedly mounted on the platform 201. Two clearance surfaces 2101, an inclined surface 2102, and a support surface 2103 are symmetrically arranged on the movable block 210. A friction pin tube 216 overlaps on each inclined surface 2102. An elastic component 215 is fixedly arranged between the friction pin tube 216 and the support surface 2103. A toggle pin 217 overlaps on the surface of each friction pin tube 216, and all the toggle pins 217 are fixedly mounted on the rotating disk 209.

[0025] The working principle of the marine propeller grinding and polishing equipment disclosed in this invention is as follows: The lifting drive motor 105 is controlled, and the output shaft of the lifting drive motor 105 drives the pulley 113 to rotate. The pulley 113 drives the lead screw 111 to rotate through the transmission belt 112. The rotation of the lead screw 111 drives the sliding sleeve 110 to move linearly. Then, the sliding block 108 drives the lifting support block 104 to move vertically on the lifting slide rod 103 through the lifting connecting rod 107 (because the sliding sleeve 110 and the sliding block 108 are fixed). Before this, the propeller 3 is sleeved (installed) on the end of the grinding drive shaft 106. Then, the grinding drive shaft 106 is moved to a position coaxial with the telescopic rod of the clamping telescopic cylinder 102. Then, the telescopic rod of the clamping telescopic cylinder 102 is controlled to extend, and then the propeller 3 is held in place to prevent the propeller 3 from falling off the grinding drive shaft 106. At the same time, the engagement pin 2061 is inserted into the engagement groove 1061 (there is friction between the rotational engagement between the grinding drive shaft 106 and the lifting support block 104, so when the grinding drive shaft 106 moves downward, the engagement groove 1061 needs to be rotated to a vertical position to facilitate the insertion of the engagement groove 1061 and the engagement pin 2061), and then the lifting drive motor 105 stops.At this time, the grinding drive motor 202 is started. The output shaft of the grinding drive motor 202 drives the sliding pin bracket 214 to rotate. The sliding pin bracket 214 drives the outer drive sleeve 211 to rotate through the sliding pin 213 (the sliding sleeve block 212 is fixed on the outer drive sleeve 211). The rotation of the outer drive sleeve 211 will drive the friction pin tube 216 to move along the inclined surface 2102 toward the relief surface 2101 through friction (due to the symmetrical arrangement, no matter whether it rotates clockwise or counterclockwise, there will always be one friction pin tube 216 moving toward the relief surface 2101). At this point, the inner wall of the outer drive sleeve 211 and the inclined surface 2102 will squeeze the friction pin tube 216, thereby further increasing the friction between the three, thus jamming, and then driving the actuating pin 217 to rotate. The rotation of the actuating pin 217 will drive the rotating disk 209 to rotate, and the rotation of the rotating disk 209 will drive the stationary permanent magnet fixing disk 207 and the transmission shaft 206 to rotate (the moving permanent magnet 208 set on the stationary permanent magnet fixing disk 207, in the absence of driving, the moving permanent magnet 208 on the stationary permanent magnet fixing disk 207 will be subject to the magnetic attraction force of the stationary permanent magnet 204, and remain stationary). The default position, where the engagement pin 2061 is vertical, facilitates the connection between the engagement pin 2061 and the engagement groove 1061. Then, the rotation of the drive shaft 206 drives the grinding drive shaft 106, which in turn drives the paddle 3 (the paddle 3 and the grinding drive shaft 106 have a spline sliding fit, as the inner ring of the paddle 3 has a spline groove to prevent slippage). As the paddle 3 rotates, it carries the abrasive sand inside the grinding pool 101 through the paddle 3, causing it to flow (the abrasive sand and water are mixed and placed inside the grinding pool 101). This flowing abrasive... The abrasive polishes the surface of the blade 3. After polishing, the abrasive drive motor 202 is stopped. At this time, the blade 3 will quickly stop due to the resistance of the abrasive, and the stopping position is uncertain. Therefore, the magnetic attraction of the stationary permanent magnet 204 and the moving permanent magnet 208 is set to rotate the engagement pin 2061 to a vertical position. Then, the telescopic rod of the clamping telescopic cylinder 102 is controlled to separate from the blade 3. The lifting drive motor 105 is controlled to move the lifting support block 104 upward along the lifting slide rod 103 to remove the blade 3 from the abrasive and then clean it.During the process of the stationary permanent magnet 204 pulling the moving permanent magnet 208 to the default position, the stationary permanent magnet fixing disk 207, as the active component, will also drive the rotating disk 209 to rotate. Due to the large magnetic resistance inside the grinding drive motor 202, it cannot drive the output shaft of the grinding drive motor 202 to rotate. When the rotating disk 209 rotates, it will drive the actuating pin 217 to rotate. The rotation of the actuating pin 217 will drive one of the friction pin tubes 216 to move towards the support surface 2103 on the inclined surface 2102, while compressing the elastic component 215. Then the friction between the friction pin tube 216 and the outer drive sleeve 211 will disappear. The other friction pin tube 216 will also move towards the support surface 2103 on the inclined surface 2102 under the action of the friction of the outer drive sleeve 211. Therefore, the rotation of the actuating pin 217 at this time will only drive the floating block 210 to rotate, and will not drive the outer drive sleeve 211 to rotate, so the torque will not be transmitted to the output shaft of the grinding drive motor 202.

Claims

1. A marine propeller grinding and polishing device, characterized in that: The device includes a grinding section, which includes a grinding pool (101) containing grinding sand. Two parallel lifting slide rods (103) are fixedly installed at the bottom of the grinding pool (101). A lifting support block (104) is slidably installed on the lifting slide rod (103), and a grinding drive shaft (106) is rotatably installed on the lifting support block (104). A clamping telescopic cylinder (102) is also fixedly installed on the grinding pool (101). The clamping telescopic cylinder (102) is used to clamp the blade (3) on the grinding drive shaft (106). It also includes a drive assembly, which includes a base (201) and a rotating disk support (203). A drive shaft support (205) is also fixedly installed inside the grinding pool (101). A drive shaft (206) is rotatably mounted on the drive shaft support (205). A static permanent magnet fixing disk (207) and a rotating disk (209) are fixedly mounted on one end of the drive shaft (206). The static permanent magnet fixing disk (207) and the rotating disk (209) are rotatably mounted on both sides of the rotating disk support (203). The static permanent magnet fixing disk (207) Two moving permanent magnets (208) are symmetrically embedded on the upper surface. Two stationary permanent magnets (204) with corresponding magnetic attraction to the two moving permanent magnets (208) are also fixedly installed on the grinding pool (101). A movable block (210) is fixedly installed on the rotating disk (209). An outer drive sleeve (211) is fitted on the outer surface of the movable block (210). A meshing pin (2061) is fixedly installed on the transmission shaft (206). A meshing groove (1061) is opened on the grinding drive shaft (106) to slide with the meshing pin (2061).

2. The marine propeller grinding and polishing equipment according to claim 1, characterized in that: The end of the telescopic rod of the clamping telescopic cylinder (102) is rotatably engaged with the blade (3), and the blade (3) is fixedly engaged with the grinding drive shaft (106).

3. The marine propeller grinding and polishing equipment according to claim 2, characterized in that: A sliding sleeve bracket (114) is fixedly installed on the grinding pool (101), a slide rail frame (109) is fixedly installed on the sliding sleeve bracket (114), a sliding block (108) is slidably installed on the slide rail frame (109), and a sliding sleeve (110) is fixedly installed on the sliding block (108).

4. The marine propeller grinding and polishing equipment according to claim 3, characterized in that: The sliding sleeve support (114) is sleeved on the outer surface of the sliding sleeve (110), and the sliding sleeve (110) and the sliding sleeve support (114) are in sliding cooperation. The sliding block (108) and the lifting support block (104) are movably connected through the lifting link (107).

5. The marine propeller grinding and polishing equipment according to claim 4, characterized in that: The grinding section also includes a lead screw support frame (115), on which a pulley (113) and a lead screw (111) are rotatably mounted. The lead screw (111) and the pulley (113) are driven together by a transmission belt (112).

6. The marine propeller grinding and polishing equipment according to claim 5, characterized in that: The sliding sleeve (110) is sleeved on the outer surface of the lead screw (111), and the sliding sleeve (110) is threadedly engaged with the lead screw (111). A lifting drive motor (105) for driving the pulley (113) to rotate is fixedly installed on the lead screw support frame (115).

7. The marine propeller grinding and polishing equipment according to claim 6, characterized in that: At least two sliding sleeve blocks (212) are fixedly installed on the surface of the outer drive sleeve (211). A grinding drive motor (202) is fixedly installed on the platform (201). A sliding pin bracket (214) is fixedly installed on the output shaft of the grinding drive motor (202). The sliding pin bracket (214) has the same number of sliding pins (213) as the sliding sleeve blocks (212). The sliding pins (213) slide in cooperation with the sliding sleeve blocks (212).

8. The marine propeller grinding and polishing equipment according to claim 7, characterized in that: The lead screw support frame (115) is fixedly installed on the platform (201). The movable block (210) is symmetrically provided with two clearance surfaces (2101), an inclined surface (2102) and a support surface (2103). Each inclined surface (2102) is connected with a friction pin tube (216). An elastic component (215) is fixedly provided between the friction pin tube (216) and the support surface (2103).

9. A marine propeller grinding and polishing device according to claim 8, characterized in that: Each of the friction pin tubes (216) has an actuating pin (217) attached to its surface, and all the actuating pins (217) are fixedly mounted on the rotating disk (209).

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