Marine propeller hub polishing device
By designing a marine propeller grinding device with automatic positioning and fixed structure, the problems of uneven grinding and low accuracy are solved, and efficient and precise grinding effects are achieved.
Patent Information
- Application Number
- CN202510049990.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-03-28
AI Technical Summary
The prior art has problems of uneven grinding and low precision when grinding marine propeller hubs, especially because the propeller is large in size and difficult to position well, which affects the grinding efficiency and quality.
A marine propeller grinding device is designed, using a positioning seat, a tightening sleeve, an elastic rod and a pressing rod to realize automatic positioning and fixing of the propeller hub, and combined with a grinding mechanism and transmission parts to achieve automatic grinding.
Through automatic positioning and fixing, the uniformity and accuracy of grinding are improved, the grinding efficiency is enhanced, and the stability of the propeller is further improved through the coordination of the electromagnet and the compression cylinder to ensure grinding accuracy.
Smart Images
Figure CN119703932A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of marine propeller grinding, in particular to a marine propeller hub grinding device. Background Art
[0002] A marine propeller is a device used to convert the power of a ship's main engine (such as a diesel engine, steam turbine, etc.) into ship propulsion. It is usually installed at the stern of a ship and generates backward thrust by rotating to push the ship forward. In terms of appearance, it is mainly composed of blades and a hub. The blades are generally twisted blades with a certain geometric shape, usually 3-5 pieces in number, and these blades are radially distributed around the hub. The hub is the part that connects the blades to the ship's propulsion shaft, which transmits the torque of the main engine to the blades so that the blades can rotate.
[0003] The actual production process involves grinding the outer surface of the hub to achieve surface treatment. Currently, many areas of the hub surface are manually polished, which can easily lead to uneven grinding. In addition, due to the large size of marine propellers, it is difficult to position them well, which will affect the grinding accuracy. Summary of the invention
[0004] In order to further improve the uniformity and precision of grinding, the present application provides a marine propeller grinding device.
[0005] The present application provides a marine propeller grinding device, which adopts the following technical solution: A marine propeller hub grinding device comprises a base and a bracket, wherein a positioning seat is arranged on the base, a grinding mechanism is arranged on the bracket, a positioning groove for placing the hub is opened on the positioning seat, a tightening sleeve is arranged in the positioning groove, an elastic rod and a pressure rod are vertically slidably connected to the bottom wall of the positioning groove, a linkage member for transmitting the reverse movement of the elastic rod and the pressure rod is arranged between the elastic rod and the pressure rod, and the pressure rod is used to press the tightening sleeve to expand the hub.
[0006] Optionally, the linkage member includes a connecting rod, one end of which is movably hinged on the elastic rod, and the other end of which is movably hinged on the pressure rod, and the middle part of the connecting rod is rotatably connected to the positioning seat.
[0007] Optionally, the positioning seat is vertically slidably connected to the base, and a limiting rod is vertically slidably connected to the base at the end of the propeller blade corresponding to the propeller, and a vertical groove for lifting and lowering the positioning seat is provided on the base, and a driving rod is vertically slidably connected to the bottom of the vertical groove, and a transmission member is provided between the driving rod and the limiting rod to link the two to move in opposite directions.
[0008] Optionally, the transmission member includes a transmission rod horizontally slidably connected to the base, both ends of the transmission rod have wedge-shaped surfaces, and the ends of the driving rod and the limiting rod have inclined surfaces abutting against the wedge-shaped surfaces.
[0009] Optionally, a magnet block is fixedly disposed at the bottom of the positioning seat, and an electromagnet for adsorbing and fixing the magnet block is embedded in the bottom wall of the vertical groove.
[0010] Optionally, the grinding mechanism includes a mounting plate, a grinding roller and a first motor, wherein the first motor drives the grinding roller to rotate, the first motor is mounted on the mounting plate, a second motor driving the grinding roller to rotate is disposed on the mounting plate, and the second motor is mounted on a bracket.
[0011] Optionally, the bracket includes a vertical frame and a horizontal frame, one end of the horizontal frame is rotatably connected to the vertical frame, a lifting cylinder is provided on the horizontal frame, the lifting cylinder drives the mounting plate to rise and fall vertically, and the bracket is horizontally slidably connected to the base.
[0012] Optionally, the mounting plate has a clamping cylinder at a position corresponding to the propeller hub, the output end of the clamping cylinder has a lower clamping block, and the clamping cylinder drives the lower clamping block to clamp the propeller hub.
[0013] Optionally, a pushing cylinder for driving the positioning seat to move up and reset is provided at the bottom of the vertical groove, a plurality of air nozzles are provided at the bottom of the mounting plate, the air nozzles are connected to a high-pressure air source, and a switch button for opening and closing the air nozzles is provided at the bottom wall of the mounting plate corresponding to the propeller hub. The pushing cylinder drives the positioning seat to move up and reset so that the switch button on the bottom wall of the propeller hub is pressed to trigger the air nozzle to open and blow air.
[0014] Optionally, the outer wall of the positioning seat has a lifting plate fixed thereto, the width of the lifting plate is consistent with the width of the vertical groove, after the lifting cylinder drives the lifting plate to move up and reset, the top wall of the lifting plate is flush with the top wall of the base, and the bottom end of the grinding roller has a threaded section for installing a horizontal push rod.
[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. Use the positioning seat to position the propeller hub. The propeller hub is placed in the positioning groove. The weight of the propeller drives the elastic rod to move downward and the pressing rod to move upward to press the expansion sleeve to automatically tighten and fix the hub, so as to position and fix the propeller. This ensures that the propeller is not easy to move or rotate during the grinding process. Then, the top grinding mechanism can be used to achieve automatic grinding, which effectively improves the uniformity and accuracy of grinding, and effectively improves the grinding efficiency. 2. After the propeller is placed on the positioning seat, the driving rod is driven downward during the downward movement of the positioning seat, and the limiting rod is driven upward with the help of the transmission member. The side wall of the limiting rod presses the end of the propeller blade to achieve further automatic limiting in the horizontal direction, avoid shaking and tilting of the propeller, further block the positioning of the propeller, and improve the stability of the propeller placement; 3. Further use the adsorption of the electromagnet and the top compression cylinder to achieve vertical fixation of the hub, improve the stability of propeller placement, and thus ensure the grinding accuracy; 4. The design of the air nozzle can clean the debris after the propeller is polished. When the polished propeller moves upward under the action of the ejection cylinder, the switch button is automatically triggered to realize automatic air blowing and cleaning. No manual operation is required, which is simple and convenient. During polishing, the vertical groove can be used as a groove body to receive the debris. Most of the debris falls into the groove body, and the debris in the groove body is lifted to the same level as the top wall of the base with the help of the lifting plate during the upward movement of the positioning seat, so as to facilitate the unified cleaning of the debris. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is an overall structural diagram of an embodiment of the present application.
[0017] Figure 2 It is a cross-sectional view of the base in the embodiment of the present application.
[0018] Figure 3 yes Figure 2 Enlarged view of point A in the middle.
[0019] Description of reference numerals: 1. Base; 2. Bracket; 3. Grinding mechanism; 4. Vertical slot; 5. Positioning seat; 6. Propeller; 7. Hub; 8. Positioning slot; 9. Mounting plate; 10. Grinding roller; 11. First motor; 12. Vertical frame; 13. Horizontal frame; 14. Lifting cylinder; 15. Second motor; 16. Expansion sleeve; 17. Rod body; 18. Return spring; 19. Pressure rod; 20. Connecting rod; 21. Magnet block; 22. Electromagnet; 23. Limit rod; 24. Blade; 25. Drive rod; 26. Compression spring; 27. Transmission rod; 28. Horizontal slot; 29. Wedge surface; 30. Inclined surface; 31. Pressing cylinder; 32. Pressing block; 33. Storage slot; 34. Ejecting cylinder; 35. Air nozzle; 36. Switch button; 37. Slot body; 38. Lifting plate; 39. Threaded section. DETAILED DESCRIPTION
[0020] The following is combined with Figure 1-3 This application is described in further detail.
[0021] A marine propeller grinding device, such as Figure 1 and Figure 2As shown, it includes a base 1 and a bracket 2, a grinding mechanism 3 is arranged on the bracket 2, a vertical slot 4 is arranged in the middle of the base 1, a positioning seat 5 is vertically lifted and connected in the vertical slot 4, a positioning slot 8 for inserting and positioning the hub 7 of the propeller 6 is opened on the top of the positioning seat 5, the grinding mechanism 3 includes a mounting plate 9, a grinding roller 10 and a first motor 11, the first motor 11 drives the grinding roller 10 to rotate through a belt drive, the bracket 2 is horizontally slidably connected to the base 1, the bracket 2 can be driven by a motor with a screw rod or a cylinder, and the bracket 2 includes a vertical frame 1 2 and a horizontal frame 13, one end of the horizontal frame 13 is rotatably connected to the top of the vertical frame 12 by means of a rotating shaft, the other end of the horizontal frame 13 is provided with a lifting cylinder 14, the output end of the lifting cylinder 14 is provided with a second motor 15, the output end of the second motor 15 is connected to the mounting plate 9, the mounting plate 9 is driven to rotate by means of the second motor 15, the rotation center of the mounting plate 9 coincides with the center line of the hub 7, the center line of the grinding roller 10 is arranged parallel to the rotation center of the mounting plate 9, and the grinding roller 10 is driven to rotate by driving the mounting plate 9 to rotate to achieve grinding of the circumferential outer wall of the hub 7.
[0022] The lifting cylinder 14 can drive the grinding roller 10 to adjust the vertical height, thereby ensuring that the outer surface of the hub 7 can be polished, and adjustment can be achieved for hubs 7 of different specifications. The horizontal movement of the bracket 2 can adjust the horizontal position of the grinding roller 10 to improve applicability. After grinding, the grinding roller 10 can be moved horizontally so that it no longer contacts the surface of the hub 7, and then the cross frame 13 is turned open. At this time, the grinding mechanism 3 is no longer located around the propeller 6, which facilitates the removal and placement of the propeller 6.
[0023] like Figure 2 and Figure 3 As shown, a tightening sleeve 16 is arranged in the positioning groove 8, and the tightening sleeve 16 is made of a rubber sleeve. The tightening sleeve 16 is used to be sleeved on the propeller hub 7. An elastic rod is vertically elastically connected to the bottom wall of the positioning groove 8. The elastic rod includes a rod body 17 and a reset spring 18. The reset spring 18 drives the rod body 17 to reset to the top end and penetrate into the positioning groove 8. In addition, a pressing rod 19 is vertically slidably connected in the positioning groove 8. A linkage member for driving the pressing rod 19 and the rod body 17 to move in the opposite direction is arranged between the pressing rod 19 and the rod body 17. The moving part includes a connecting rod 20, the middle part of which is rotatably connected to the positioning seat 5, one end of the connecting rod 20 is movably hinged on the rod body 17, and the other end is movably hinged on the pressure rod 19; in this way, when the hub 7 is placed in the positioning groove 8, the weight of the hub 7 drives the rod body 17 to move downward and links the pressure rod 19 to move upward, and the pressure rod 19 presses the expansion sleeve 16 to realize automatic expansion and fixation of the hub 7, thereby improving the stability of the placement of the hub 7 and reducing the relative rotation of the hub 7 during grinding.
[0024] like Figure 2 and Figure 3As shown, a magnet block 21 is embedded at the bottom of the positioning seat 5, and a ring-shaped electromagnet 22 is embedded at the bottom of the vertical slot 4 corresponding to the magnet block 21. When the positioning seat 5 descends to the bottom of the vertical slot 4, the electromagnet 22 contacts the magnet block 21. At this time, the electromagnet 22 is energized to further attract the magnet block 21 with the help of magnetic force, thereby further realizing the adsorption and fixation of the positioning seat 5 and improving the stability of the positioning seat 5.
[0025] like Figure 2 and Figure 3 As shown, a limit rod 23 is vertically slidably connected at the end of the blade 24 of the propeller 6 corresponding to the base 1, and the top side wall of the limit rod 23 is used to abut the end of the blade 24 to block and limit it in the horizontal direction. A driving rod 25 is vertically slidably connected to the bottom wall of the vertical groove 4, and the top of the driving rod 25 is located in the vertical groove 4. A compression spring 26 is provided on the base 1 to drive the driving rod 25 to move up and reset. The compression spring 26 drives the driving rod 25 to move up and reset until its top end penetrates into the vertical groove 4. A transmission member that links the two to move in opposite directions is provided between the driving rod 25 and the limit rod 23. The transmission member includes a transmission rod 27, and the transmission rod 27 is horizontally slidably connected to the base 1. The base 1 is provided with a transverse groove 26 for the transmission rod 27 to slide horizontally. 8. Both ends of the transmission rod 27 have wedge-shaped surfaces 29, and the ends of the driving rod 25 and the limiting rod 23 have inclined surfaces 30 abutting against the wedge-shaped surfaces 29. The weight of the driving rod 25 is less than that of the limiting rod 23. In the initial state, the top end of the driving rod 25 is located in the vertical groove 4, and the positioning seat 5 moves down to the bottom of the vertical groove 4 to drive the driving rod 25 to be pressed down. During the pressing process of the driving rod 25, the limiting rod 23 is synchronously driven to move up with the help of the transmission rod 27, so that the top end of the limiting rod 23 finally abuts against the end of the blade 24 to achieve horizontal blocking. In this embodiment, two limiting rods 23 are symmetrically arranged, and the horizontal blocking and limiting of the limiting rod 23 are used to prevent the propeller 6 from shaking and tilting, further positioning and blocking the propeller 6, and improving the stability of the placement of the propeller 6.
[0026] like Figure 1 As shown, a clamping cylinder 31 is provided at the top of the mounting plate 9 corresponding to the hub 7, and the output end of the clamping cylinder 31 has a pressing block 32, and the mounting plate 9 has a receiving groove 33 for receiving the pressing block 32. The clamping cylinder 31 drives the pressing block 32 to move downward to further clamp and fix the hub 7, and further clamp and fix the hub 7 in the vertical direction, thereby reducing the up and down movement or rotation of the hub 7, improving the stability of the propeller 6, and improving the grinding accuracy.
[0027] like Figure 1 and Figure 2As shown, a pushing cylinder 34 is provided at the bottom of the base 1, and the output end of the pushing cylinder 34 is penetrated at the bottom center of the vertical groove 4, and the output end of the pushing cylinder 34 is connected to the bottom wall of the positioning seat 5. After the polishing of the propeller 6 is completed, the positioning seat 5 can be driven upward by the pushing cylinder 34 to realize automatic upward reset, which is convenient for the subsequent removal of the propeller 6.
[0028] like Figure 1 and Figure 2 As shown, a plurality of downward air nozzles 35 are evenly distributed on the bottom wall of the mounting plate 9, and the air nozzles 35 are used to connect to a high-pressure air source. At the same time, a switch button 36 for controlling the opening and closing of the air nozzles 35 is provided on the bottom wall of the mounting plate 9 corresponding to the hub 7. After grinding is completed in actual use, the ejection cylinder 34 drives the positioning seat 5 to move upward, and the switch button 36 is pressed on the top wall of the hub 7 to open the air nozzle 35. The air nozzle 35 blows air to clean the debris that has fallen on the propeller 6, and simultaneously realizes good cleaning of the debris. There is no need to clean it in other processes later, which saves processes and achieves the purpose of improving production efficiency.
[0029] like Figure 1 and Figure 2 As shown, the width of the vertical groove 4 is greater than the positioning seat 5, so that the outer circle of the vertical groove 4 forms a groove body 37 for receiving the debris during the grinding process, and a lifting plate 38 is fixedly arranged on the outer wall of the bottom of the positioning seat 5, and the outer diameter of the lifting plate 38 is consistent with the width of the vertical groove 4. When the lifting cylinder 34 drives the lifting plate 38 to move up and reset, the top wall of the lifting plate 38 is flush with the top wall of the base 1. In this way, with the help of the lifting plate 38, the debris in the groove body 37 can be lifted to the horizontal position of the top wall of the base 1 during the upward movement of the positioning seat 5, which is convenient for the subsequent unified cleaning of the debris and improves the cleaning efficiency of the debris; in addition, a water tank for installing a water tank is provided at the bottom end of the grinding roller 10. The threaded section 39 of the horizontal push rod is threadedly connected to the grinding roller 10 to achieve detachability. The threaded section 39 can be removed when not in use, and installed when needed. Then, a horizontal push rod is installed on the threaded section 39. The horizontal push rod is driven downward to abut against the top wall of the base 1 by means of the lifting cylinder 14, and then the bracket 2 is driven to move horizontally to push the debris to one side with the help of the horizontal push rod, so that the debris can be uniformly collected and processed, and the grinding roller 10 can be used for multi-functional use, thereby having better practicality. After completing the grinding of the hub 7 at one end of the propeller 6, the propeller 6 is turned over and the hub 7 at the other end is ground.
[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A marine propeller hub grinding device, characterized in that: The invention comprises a base (1) and a bracket (2), wherein a positioning seat (5) is arranged on the base (1), a grinding mechanism (3) is arranged on the bracket (2), a positioning groove (8) for placing a propeller hub (7) is provided on the positioning seat (5), a tightening sleeve (16) is arranged in the positioning groove (8), an elastic rod and a pressing rod (19) are vertically slidably connected to the bottom wall of the positioning groove (8), a linkage member for transmitting the reverse movement of the elastic rod and the pressing rod (19) is arranged between the elastic rod and the pressing rod (19), and the pressing rod (19) is used to press the tightening sleeve (16) to tighten the propeller hub (7).
2. A marine propeller hub grinding device according to claim 1, characterized in that: The linkage member comprises a connecting rod (20), one end of which is movably hinged on the elastic rod, and the other end of which is movably hinged on the pressing rod (19), and the middle part of the connecting rod (20) is rotatably connected to the positioning seat (5).
3. A marine propeller hub grinding device according to claim 2, characterized in that: The positioning seat (5) is vertically slidably connected to the base (1); the end of the blade (24) of the propeller (6) on the base (1) is vertically slidably connected to a limit rod (23); a vertical groove (4) for the positioning seat (5) to be raised and lowered is provided on the base (1); a driving rod (25) is vertically slidably connected to the bottom of the vertical groove (4); a transmission member is provided between the driving rod (25) and the limit rod (23) for linking the two to move in opposite directions.
4. A marine propeller hub grinding device according to claim 3, characterized in that: The transmission member comprises a transmission rod (27) horizontally slidably connected to the base (1), the two ends of the transmission rod (27) having wedge-shaped surfaces (29), and the ends of the driving rod (25) and the limiting rod (23) having inclined surfaces (30) abutting against the wedge-shaped surfaces (29).
5. The marine propeller hub grinding device according to claim 3, characterized in that: A magnet block (21) is fixedly arranged at the bottom of the positioning seat (5), and an electromagnet (22) for adsorbing and fixing the magnet block (21) is embedded in the bottom wall of the vertical slot (4).
6. A marine propeller hub grinding device according to claim 3, characterized in that: The grinding mechanism (3) comprises a mounting plate (9), a grinding roller (10) and a first motor (11); the first motor (11) drives the grinding roller (10) to rotate; the first motor (11) is mounted on the mounting plate (9); a second motor (15) is provided on the mounting plate (9) for driving the grinding roller to rotate; the second motor (15) is mounted on the bracket (2).
7. A marine propeller hub grinding device according to claim 6, characterized in that: The support (2) comprises a vertical frame (12) and a horizontal frame (13), one end of the horizontal frame (13) is rotatably connected to the vertical frame (12), a lifting cylinder (14) is provided on the horizontal frame (13), and the lifting cylinder (14) drives the mounting plate (9) to rise and fall vertically, and the support (2) is horizontally slidably connected to the base (1).
8. A marine propeller hub grinding device according to claim 6, characterized in that: The mounting plate (9) is provided with a pressing cylinder (31) at a position corresponding to the propeller hub (7), and the output end of the pressing cylinder (31) is provided with a lower pressing block (32), and the pressing cylinder (31) drives the lower pressing block (32) to press the propeller hub (7).
9. A marine propeller hub grinding device according to claim 7, characterized in that: A pushing cylinder (34) is provided at the bottom of the vertical groove (4) for driving the positioning seat (5) to move upward and reset; a plurality of air nozzles (35) are provided at the bottom of the mounting plate (9); the air nozzles (35) are connected to a high-pressure air source; a switch button (36) for opening and closing the air nozzles (35) is provided at the bottom wall of the mounting plate (9) corresponding to the propeller hub (7); the pushing cylinder (34) drives the positioning seat (5) to move upward and reset so that the bottom wall of the propeller hub (7) presses the switch button (36) to trigger the air nozzles (35) to start blowing.
10. A marine propeller hub grinding device according to claim 9, characterized in that: The outer wall of the positioning seat (5) has a lifting plate (38) fixed thereto, the width of the lifting plate (38) is consistent with the width of the vertical groove (4), after the lifting cylinder (34) drives the lifting plate (38) to move up and reset, the top wall of the lifting plate (38) is flush with the top wall of the base (1), and the bottom end of the grinding roller (10) has a threaded section (39) for installing a horizontal push rod.