A marine propeller wrap removal device and method

Abstract

The application discloses a marine propeller winding removal device, which comprises a protection assembly and a cutting component. The protection assembly is arranged on the periphery of the propeller, a hollow cylinder at one end of the protection assembly is sleeved on the propeller shaft, the protection assembly is driven by a driving mechanism on the ship body to rotate around the propeller shaft, a plurality of protection net sleeve components are arranged along the propeller shaft, the protection net sleeve components are circumferentially surrounded to form a protection, grooves and displacement holes are circumferentially arranged on the protection net sleeve components, the cutting component is fixed to the ship body and located above the protection assembly, the cutting component comprises a longitudinal cutting knife, a transverse cutting knife and a displacement rod, and the longitudinal cutting knife, the transverse cutting knife and the displacement rod are connected through respective up-down and left-right driving mechanisms, the blade of the longitudinal cutting knife is arranged in the axial direction of the protection net sleeve component, the blade of the transverse cutting knife is arranged in the circumferential direction of the protection net sleeve component, and the displacement rod corresponds to the displacement hole on the protection net sleeve component. The winding can be completely removed, and the propeller is not damaged.

Description

Technical Field

[0001] This invention relates to the field of marine component technology, and in particular to a device and method for removing entangled material from marine propellers. Background Technology

[0002] Ship propellers often encounter the problem of entanglement with suspended objects in the water during navigation. The main reason is that the exposed propeller shaft and high-speed rotating blades can become entangled with aquatic plants or abandoned fishing nets. The entanglement will increase and tighten, which can lead to increased propeller drag and wasted energy, or even cause the main engine to stop and the ship to lose control, resulting in shipwreck and loss of life, thus posing a certain safety hazard to the ship's navigation.

[0003] Most existing anti-winding devices use a cutting blade to directly cut the entangled material on the circumference of the propeller shaft. This method of cutting the entangled material has the following disadvantages: due to the complex structure of the propeller, cutting the entangled material is very difficult. Either the cut is not thorough, or the cutting device structure is too complicated, and it may even damage the propeller. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the prior art, the first objective of this invention is to disclose a device for removing entangled material from marine propellers;

[0005] The second objective is to disclose a method for removing entangled material from marine propellers using the aforementioned device.

[0006] Technical solution: The marine propeller entanglement removal device disclosed in this invention includes a protective component and a cutting component;

[0007] The protective component is located on the periphery of the propeller, with a hollow cylinder at one end loosely fitted onto the propeller shaft. The protective component is driven by a drive mechanism on the hull, enabling it to rotate around the propeller shaft.

[0008] The protective assembly is provided with multiple protective net kits of the same structure along the propeller axis, and the protective net kits surround the propeller circumferentially to form protection.

[0009] The protective netting kit is provided with grooves and displacement holes at intervals in the circumferential direction, and multiple grooves are spliced ​​together to form an axial groove channel;

[0010] The cut-off component is fixed to the hull and located above the protective assembly;

[0011] The cutting component includes a longitudinal cutting blade, a transverse cutting blade, and a displacement rod, all of which are connected by their respective up-down and left-right driving mechanisms. The cutting edge of the longitudinal cutting blade is set axially toward the protective net kit, the cutting edge of the transverse cutting blade is set circumferentially toward the protective net kit, and the displacement rod corresponds to the displacement hole on the protective net kit.

[0012] Furthermore, the protective assembly includes a first sprocket, a mounting plate, support rods, a protective net kit, and a protective cover. The mounting plate consists of a flat plate and a hollow cylinder perpendicular to it. A through hole is machined in the middle of the flat plate. The through hole in the middle of the flat plate and the hollow cylinder are coaxially arranged. The first sprocket is fixed on the hollow cylinder. Two support rods are symmetrically installed at both ends of the mounting plate. Multiple protective net kits with the same structure are fitted onto the two support rods. The protective cover is installed at the end of the last protective net kit. The space formed by the protective net kit and the protective cover is used to accommodate the propeller. The protective assembly is loosely fitted onto the propeller shaft through the hollow cylinder of the mounting plate. The first sprocket is connected to a sprocket mounted on the hull via a chain drive.

[0013] Furthermore, the protective net kit includes two protective rings and a net cover. The net cover is fixed between the two protective rings. Both the protective rings and the net cover are provided with grooves spaced apart circumferentially. The top of the protective ring is provided with a displacement hole, and the inner wall of the protective ring is machined with a guide hole corresponding to the support rod. The protective net kit is fitted onto the support rod through the guide hole.

[0014] Furthermore, the cutting component includes a fixing plate, a longitudinal cutting assembly, a shifting assembly, and a transverse cutting assembly. The shifting assembly is installed in the middle of the fixing plate, and the longitudinal cutting assembly and the transverse cutting assembly are located on both sides of the shifting assembly and installed on the fixing plate. The fixing plate is fixed to the hull.

[0015] Furthermore, a displacement hole is machined in the middle of the fixed plate, and longitudinal and transverse cutting holes are machined on both sides of the displacement hole, respectively.

[0016] Furthermore, the longitudinal cutting assembly includes a first opening frame, a first linear bearing, a first electric cylinder, a first mounting plate, a first guide rod, a first module mounting plate, a first linear module, a longitudinal cutting blade, and a first motor; the first mounting plate and the gantry frame formed by the two first opening frames are mounted on one side of the fixed plate; a through hole is machined in the middle of the first mounting plate; the first electric cylinder is mounted in the middle of the first mounting plate, and its electric rod passes through the through hole in the middle of the first mounting plate; the two first linear bearings are symmetrically mounted on the first mounting plate. The guide rod passes through the linear bearing and its flange end is fixedly connected to the mounting plate of module one. The end of the electric rod of electric cylinder one is also fixedly connected to the mounting plate of module one. When the electric rod of electric cylinder one extends or retracts, it drives the mounting plate of module one to move up and down. Linear module one and motor one are mounted in a straight line on the mounting plate of module one. The output shaft of motor one is connected to the lead screw of linear module one through a coupling. The longitudinal cutting blade is mounted on the nut of linear module one. Driven by linear module one, the longitudinal cutting blade moves longitudinally.

[0017] Furthermore, the two cutting edges of the longitudinal cutting blade are located in the same plane and arranged in two opposite directions.

[0018] Furthermore, the displacement assembly includes a second guide rod, a second linear bearing, a second sprocket, a second motor, a second mounting plate, a second guide bar, a lead screw, a second electric cylinder, a third linear bearing, a drive plate, a displacement rod, a nut, a T-shaped guide bar mounting base, and a bearing with a seat. Four second guide rods are linearly arrayed on the fixed plate. The second mounting plate is movably mounted on the four second guide rods via four second linear bearings. Two second electric cylinders are mounted on the fixed plate, located on either side of the displacement hole. The ends of the electric rods of the two second electric cylinders are fixedly connected to the bottom surface of the second mounting plate. When the electric rods of the two second electric cylinders extend or retract, they drive the second mounting plate to move up and down along the second guide rods. The lead screw is mounted in the middle of the bottom surface of the second mounting plate via a bearing with a seat. The two second guide bars are respectively mounted via T-shaped guide bar mounting bases. The drive plate is mounted on both sides of the bottom surface of the second mounting plate, symmetrical to the lead screw. Nuts are installed on the lead screw, and linear bearings are installed on the second guide rod. The drive plate is mounted on the linear bearing that mates with the second guide rod and is fixedly connected to the nut installed on the lead screw. The second motor is mounted on the top surface of the second mounting plate. A sprocket is mounted on the output shaft of the second motor. A sprocket is also mounted on the end of the lead screw near the second motor. The sprockets on the output shaft of the second motor and the sprockets on the end of the lead screw near the second motor are connected by a chain drive. Four shift rods are mounted in a linear array on the bottom surface of the drive plate and pass through the shift holes of the fixed plate. When the output shaft of the second motor rotates, the drive plate and the shift rods mounted on the drive plate move left and right through the sprocket and chain mechanism and the lead screw and nut mechanism.

[0019] Furthermore, the cross-cutting assembly includes a second opening frame, a fourth linear bearing, a third electric cylinder, a third mounting plate, a third guide rod, a second module mounting plate, a second linear module, a cross-cutting blade, and a third motor. The third mounting plate and the gantry frame formed by the two second opening frames are mounted on one side of the fixed plate. A through hole is machined in the middle of the third mounting plate. The third electric cylinder is mounted in the middle of the third mounting plate, and its electric rod passes through the through hole in the middle of the third mounting plate. Two fourth linear bearings are symmetrically mounted on the third mounting plate. The guide rod passes through the No. 4 linear bearing, and its flange end is fixedly connected to the No. 2 module mounting plate. The end of the electric rod of the No. 3 electric cylinder is also fixedly connected to the No. 2 module mounting plate. When the electric rod of the No. 3 electric cylinder extends or retracts, it drives the No. 2 module mounting plate to move up and down. The No. 2 linear module and the No. 3 motor are mounted in a straight line on the No. 2 module mounting plate. The output shaft of the No. 3 motor is connected to the lead screw of the No. 2 linear module through a coupling. The transverse cutting blade is mounted on the nut of the No. 2 linear module. Driven by the No. 2 linear module, the transverse cutting blade moves left and right.

[0020] The method for removing entangled material from marine propellers using the above-mentioned device includes the following steps:

[0021] S1. When the protective component is wrapped with the wrapped material, the protective component rotates under the action of external force until the groove of the protective component is below the longitudinal cutting component. The electric rod of the first electric cylinder of the longitudinal cutting component extends, driving the first module mounting plate and the longitudinal cutting blade to move down. The longitudinal cutting blade passes through the longitudinal cutting hole and inserts into the groove. The first linear module starts, driving the longitudinal cutting blade to move longitudinally along the protective component to achieve a longitudinal cut of the wrapped material.

[0022] S2. After completing one longitudinal cut of the entangled material, the electric rod of the No. 1 electric cylinder retracts, driving the No. 1 module mounting plate and the longitudinal cutting blade to move upward until the longitudinal cutting blade is pulled out of the groove.

[0023] S3. Repeat S1 and S2 until the winding in each groove is cut longitudinally.

[0024] S4. The protective component rotates under the action of external force until the displacement hole of the protective component is located below the displacement component;

[0025] S5. The output shaft of the second motor of the shifting assembly rotates, driving the drive plate and the shifting rods mounted on the drive plate to move through the sprocket and chain mechanism and the lead screw and nut mechanism until the four shifting rods are directly above the four displacement holes of the protective net kit at the end of the protective assembly. The electric rod of the second electric cylinder extends, driving the second mounting plate to move down along the second guide rod until the four shifting rods are inserted into the displacement holes. The output shaft of the second motor of the shifting assembly rotates again, driving the drive plate and the shifting rods mounted on the drive plate to move through the sprocket and chain mechanism and the lead screw and nut mechanism, thereby driving the last protective net kit to move until a certain gap is maintained between it and the protective net kit on the left side. The electric rod of the second electric cylinder retracts, driving the second mounting plate to move up along the second guide rod until the four shifting rods are pulled out from the displacement holes.

[0026] S6. The second linear module starts, driving the transverse cutting blade to move longitudinally along the protective assembly until the transverse cutting blade is above the gap between the last protective net kit and its adjacent left protective net kit. The electric rod of the third electric cylinder of the transverse cutting assembly extends, driving the second module mounting plate and the transverse cutting blade mounted on it to move down. The transverse cutting blade passes through the transverse cutting hole of the fixed plate and inserts into the gap between the last protective net kit and its adjacent left protective net kit. The protective assembly rotates once under the action of external force, realizing one transverse cut of the entangled material.

[0027] S7. The electric rod of the No. 3 electric cylinder of the cross-cutting component retracts, driving the No. 2 module mounting plate and the cross-cutting blade to move upward until the cross-cutting blade is pulled out from the gap between the last protective net kit and its adjacent left protective net kit.

[0028] S8. Following the same steps S6 and S7, make transverse cuts to the entanglement between all adjacent protective netting kits.

[0029] Beneficial effects: Compared with the prior art, the advantages of this invention are as follows: the protective component is arranged around the propeller to prevent the entanglement material from getting tangled on the propeller; the cutting component is arranged directly above the protective component to cut off the entanglement material tangled on the protective component; after being cut off, the entanglement material is detached from the protective component under the impact of the water flow, thereby achieving the removal of the entanglement material. Compared with the traditional cutting blade that directly cuts the entanglement material on the circumference of the propeller shaft, it can effectively avoid damage to the propeller during the cutting process; the entanglement material is cut both longitudinally and laterally, which greatly improves the cutting effect and makes the removal of the entanglement material more thorough. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the protective component structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the protective net structure of the present invention;

[0033] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0034] Figure 5 for Figure 3 Enlarged view at point B in the middle;

[0035] Figure 6 This is a schematic diagram of the cut-off component structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the fixing plate structure of the present invention;

[0037] Figure 8 This is a schematic diagram of the longitudinal slicing component structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the shifting structure of the present invention;

[0039] Figure 10 This is a schematic diagram of the cross-section component structure of the present invention. Detailed Implementation

[0040] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] like Figure 1 The marine propeller entanglement removal device shown includes a protective component 1 and a cutting component 2.

[0042] The protective component 1 is arranged around the propeller 3 to prevent the entangled material from getting tangled on the propeller 3. The cutting component 2 is arranged directly above the protective component 1 to cut off the entangled material tangled on the protective component 1. After being cut off, the entangled material is detached from the protective component 1 under the impact of the water flow, thereby removing the entangled material.

[0043] like Figure 2As shown, the protective assembly 1 includes a first sprocket 101, a mounting plate 102, support rods 103, protective net kits 104, and a protective cover 105. The mounting plate 102 consists of a flat plate and a perpendicular hollow cylinder. A through hole is machined in the middle of the flat plate of the mounting plate 102. The through hole in the middle of the flat plate of the mounting plate 102 and the hollow cylinder of the mounting plate 102 are coaxially arranged. The first sprocket 101 is mounted on the hollow cylinder of the mounting plate 102 by a key or interference fit. Two support rods 103 are symmetrically mounted at both ends of the mounting plate 102. Several identical protective net kits 104 are fitted onto the two support rods 103. The protective cover 105 is installed at the end of the outermost protective net kit 104. The space formed by the protective net kit 104 and the protective cover 105 is used to accommodate the propeller 3. This ensures that the entanglement can only wrap around the protective net kit 104 and the protective cover 105, effectively preventing the entanglement from wrapping around the propeller 3. The number of protective net kits 104 depends on the length of the propeller 3. In this embodiment, there are three protective net kits 104. The protective component 1 is loosely fitted onto the propeller shaft of the propeller 3 through the hollow cylinder of the mounting plate 102. The first sprocket 101 mounted on the hollow cylinder of the mounting plate 102 is connected to the sprocket mounted on the hull deck via a chain (not shown in the figure). Driven by the sprocket mounted on the hull deck, the protective component 1 can rotate around the propeller shaft of the propeller 3.

[0044] like Figures 3 to 5 As shown, the protective net kit 104 includes two protective rings 1041 and a net cover 1042. The net cover 1042 is welded between the protective rings 1041 at its left and right ends. The main body of the protective rings 1041 and the net cover 1042 is circular. To facilitate the complete removal of the entangled material, both the protective rings 1041 and the net cover 1042 are circumferentially spaced with grooves 1041.1. The top of the protective ring 1041 is machined with a displacement hole 1041.2, and the two sides of its horizontal position corresponding to the support rods 103 are machined with guide holes 1041.3 to facilitate the fitting of the protective net kit 104 onto the two support rods 103.

[0045] like Figure 6 As shown, the cutting component 2 includes a fixing plate 21, a longitudinal cutting assembly 22, a shifting assembly 23, and a transverse cutting assembly 24. The shifting assembly 23 is installed in the middle of the fixing plate 21, and the longitudinal cutting assembly 22 and the transverse cutting assembly 24 are located on both sides of the shifting assembly 23 and installed on the fixing plate 21. The fixing plate 21 is fixed to the hull.

[0046] like Figure 7As shown, the main structure of the fixing plate 21 is a flat plate, with a displacement hole 21.2 machined in the middle. Longitudinal cutting holes 21.1 and transverse cutting holes 21.3 are machined on both sides of the displacement hole 21.2, so that the longitudinal cutting blade 228 and the transverse cutting blade 248 can pass through the fixing plate 21 to longitudinally and transversely cut the wrapped material on the protective net kit 104 and the protective cover 105.

[0047] like Figure 8 As shown, the longitudinal cutting assembly 22 includes a first opening frame 221, a first linear bearing 222, a first electric cylinder 223, a first mounting plate 224, a first guide rod 225, a first module mounting plate 226, a first linear module 227, a longitudinal cutting blade 228, and a first motor 229. A gantry frame consisting of mounting plate 224 and two opening frames 221 is installed on one side of fixed plate 21. A through hole is machined in the middle of mounting plate 224. Electric cylinder 223 is installed in the middle of mounting plate 224, and its electric rod passes through the through hole in the middle of mounting plate 224. Two linear bearings 222 are symmetrically installed on mounting plate 224. Guide rod 225 passes through linear bearing 222, and its flange end is fixedly connected to module mounting plate 226. The end of electric rod of electric cylinder 223 is also fixedly connected to module mounting plate 226. When electric rod of electric cylinder 223 extends or retracts, it drives module mounting plate 226 to move up and down. Linear module 227 and motor 229 are mounted in a straight line on module mounting plate 226. The output shaft of motor 229 is connected to the lead screw of linear module 227 via a coupling (not shown in the figure). The longitudinal cutting blade 228 is mounted on the nut of linear module 227. Driven by linear module 227, the cutting blade 228 moves longitudinally. The two cutting edges of the longitudinal cutting blade 228 are located in the same plane and are arranged in two opposite directions.

[0048] like Figure 9As shown, the shifting assembly 23 includes a second guide rod 231, a second linear bearing 232, a second sprocket 233, a second motor 234, a second mounting plate 235, a second guide bar 236, a lead screw 237, a second electric cylinder 238, a third linear bearing 239, a drive plate 251, a shifting rod 252, a nut 253, a T-shaped guide bar mounting seat 254, and a seated bearing 255. Four guide rods 231 are linearly arrayed on the fixed plate 21 and located outside the four corners of the displacement hole 21.2. The mounting plate 235 is mounted on the four guide rods 231 via four linear bearings 232. Two electric cylinders 238 are mounted on the fixed plate 21 and located on both sides of the displacement hole 21.2. The ends of the electric rods of the two electric cylinders 238 are fixedly connected to the bottom surface of the mounting plate 235. When the electric rods of the two electric cylinders 238 extend or retract, they drive the mounting plate 235 to move up and down along the guide rods 231. The lead screw 237 is mounted on the bottom center of the second mounting plate 235 via a seated bearing 255. Two second linear guides 236 are mounted on opposite sides of the bottom of the second mounting plate 235 via T-shaped linear guide mounting seats 254, symmetrical to the lead screw 237. A nut 253 is fitted onto the lead screw 237. A third linear bearing 239 is fitted onto the second linear guide 236. The drive plate 251 is mounted on the third linear bearing 239 that mates with the second linear guide 236, and is fixedly connected to the nut 253 fitted onto the lead screw 237. Motor 234 is mounted on the top surface of mounting plate 235. A sprocket 233 is mounted on the output shaft of motor 234. A sprocket 233 is also mounted on the end of lead screw 237 near motor 234. The sprocket on the output shaft of motor 234 and the sprocket on the end of lead screw 237 near motor 234 are connected by a chain drive (not shown in the figure). Four shifting rods 252 are mounted in a linear array on the bottom surface of drive plate 251, passing through shifting holes 21.2 in fixed plate 21. When the output shaft of motor 234 rotates, the drive plate 251 and the shifting rods 252 mounted on it move left and right through the sprocket and chain mechanism and the lead screw and nut mechanism.

[0049] like Figure 10As shown, the cross-cutting assembly 24 includes a second opening frame 241, a fourth linear bearing 242, a third electric cylinder 243, a third mounting plate 244, a third guide rod 245, a second module mounting plate 246, a second linear module 247, a cross-cutting blade 248, and a third motor 249. The gantry frame consisting of mounting plate 244 and two open brackets 241 is installed on one side of the fixed plate 21. A through hole is machined in the middle of mounting plate 244. Electric cylinder 243 is installed in the middle of mounting plate 244, and its electric rod passes through the through hole in the middle of mounting plate 244. Two linear bearings 242 are symmetrically installed on mounting plate 244. Guide rod 245 passes through linear bearing 242 and its flange end is fixedly connected to module mounting plate 246. The end of electric rod of electric cylinder 243 is also fixedly connected to module mounting plate 246. When electric rod of electric cylinder 243 extends or retracts, it drives module mounting plate 246 to move up and down. Linear module 247 and motor 249 are mounted in a straight line on mounting plate 246 of module 2. The output shaft of motor 249 is connected to the lead screw of linear module 247 through a coupling (not shown in the figure). The horizontal cutting blade 248 is mounted on the nut of linear module 247. Driven by linear module 247, the horizontal cutting blade 248 moves left and right.

[0050] Work methods:

[0051] (1) Under normal circumstances, the protective component 1 remains stationary.

[0052] (2) When the protective component 1 is wrapped with the wrapped material, the protective component 1 rotates under the action of external force until the groove 1041.1 on the protective ring 1041 and the mesh cover 1042 of the protective component 1 is located below the longitudinal cutting component 22. The electric rod of the first electric cylinder 223 of the longitudinal cutting component 22 extends out, driving the first module mounting plate 226 and the longitudinal cutting blade 228 mounted on it to move down. The longitudinal cutting blade 228 passes through the longitudinal cutting hole 21.1 of the fixing plate 21 and is inserted into the groove 1041.1 on the protective ring 1041 and the mesh cover 1042 of the protective component 1 below the longitudinal cutting component 22. The first linear module 227 is started, driving the longitudinal cutting blade 228 to move longitudinally along the protective component 1 to realize a longitudinal cut of the wrapped material.

[0053] (3) After completing one longitudinal cut of the entangled material, the electric rod of the first electric cylinder 223 retracts, driving the first module mounting plate 226 and the longitudinal cutting blade 228 mounted on it to move upward until the longitudinal cutting blade 228 is pulled out from the groove 1041.1 on the protective ring 1041 and the mesh cover 1042 of the protective component 1 below the longitudinal cutting component 22.

[0054] (4) Repeat steps 2 and 3 until the winding in each groove 1041.1 is longitudinally cut.

[0055] (5) The protective component 1 rotates under the action of external force until the displacement hole 1041.2 on the protective ring 1041 and the mesh cover 1042 of the protective component 1 is located below the displacement component 23.

[0056] (6) The output shaft of the second motor 234 of the shift assembly 23 rotates, driving the drive plate 251 and the shift rods 252 mounted on the drive plate 251 to move through the sprocket and chain mechanism and the lead screw and nut mechanism until the four shift rods 252 are directly above the four displacement holes 1041.2 of the protective net kit 104 at the end of the protective assembly 1. The electric rod of the second electric cylinder 238 extends, driving the second mounting plate 235 to move down along the second guide rod 231 until the four shift rods 252 are inserted into the four displacement holes 1041.2 of the last protective net kit 104. The shift assembly 2 The output shaft of motor 234 rotates again, driving the drive plate 251 and the displacement rod 252 mounted on the drive plate 251 to move through the sprocket and chain mechanism and the lead screw and nut mechanism. This causes the last protective net kit 104 to move until a certain gap is maintained between the last protective net kit 104 and the adjacent left protective net kit 104. The electric rod of the second electric cylinder 238 retracts, driving the second mounting plate 235 to move upward along the second guide rod 231 until the four displacement rods 252 are pulled out from the four displacement holes 1041.2 of the last protective net kit 104.

[0057] (7) The second linear module 247 is started, which drives the transverse cutting blade 248 to move longitudinally along the protective component 1 until the transverse cutting blade 248 is above the gap between the last protective net kit and the adjacent left protective net kit. The electric rod of the third electric cylinder 243 of the transverse cutting component 24 extends, which drives the second module mounting plate 246 and the transverse cutting blade 248 mounted on it to move down. The transverse cutting blade 248 passes through the transverse cutting hole 21.3 of the fixing plate 21 and inserts into the gap between the last protective net kit and the adjacent left protective net kit. The protective component 1 rotates once under the action of external force to achieve one transverse cut of the entangled material.

[0058] (8) The electric cylinder 243 of the cross-cutting assembly 24 retracts, driving the mounting plate 246 of the second module and the cross-cutting blade 248 mounted thereon to move upward until the cross-cutting blade 248 is pulled out from the gap between the last protective net kit and the adjacent left protective net kit.

[0059] (9) Following the same procedure as steps (7) and (8), make a transverse cut between the wrappings of all adjacent protective netting kits 104.

Claims

1. A device for removing entangled material from a marine propeller, characterized in that, Includes protective components (1) and cut-off components (2); The protective component (1) is located on the periphery of the propeller (3), with a hollow cylinder at one end loosely fitted on the propeller shaft. The protective component is driven by the drive mechanism on the hull, so that the protective component can rotate around the propeller shaft. The protective component (1) has multiple protective net kits (104) with the same structure arranged along the axial direction of the propeller (3), and the protective net kits (104) surround the propeller (3) to form protection. The protective net kit (104) is provided with grooves (1041.1) and displacement holes (1041.2) spaced around the perimeter, and multiple grooves (1041.1) are spliced ​​together to form an axial groove channel; The cut-off component (2) is fixed to the hull and located above the protective assembly (1); The cutting component (2) includes a longitudinal cutting blade (228), a transverse cutting blade (248), and a shifting rod (252), all of which are connected by their respective up-down and left-right driving mechanisms. The blade of the longitudinal cutting blade (228) is set axially toward the protective net kit (104), and the blade of the transverse cutting blade (248) is set circumferentially toward the protective net kit (104). The shifting rod (252) corresponds to the displacement hole (1041.2) on the protective net kit (104).

2. The marine propeller entanglement removal device according to claim 1, characterized in that: The protective assembly (1) includes a first sprocket (101), a mounting plate (102), support rods (103), a protective net kit (104), and a protective cover (105). The mounting plate (102) consists of a flat plate and a hollow cylinder perpendicular to it. A through hole is machined in the middle of the flat plate of the mounting plate (102). The through hole in the middle of the flat plate of the mounting plate (102) and the hollow cylinder are coaxially arranged. The first sprocket (101) is fixed on the hollow cylinder. Two support rods (103) are symmetrically installed on the mounting plate (105). At both ends of 102), multiple protective net kits (104) with the same structure are fitted on two support rods (103). The protective cover (105) is installed at the end of the last protective net kit (104). The space formed by the protective net kit (104) and the protective cover (105) is used to accommodate the propeller (3). The protective component 1 is loosely fitted on the propeller shaft of the propeller (3) through the hollow cylinder of the mounting plate (102). The first sprocket (101) is connected to the sprocket drive installed on the hull through the chain.

3. The marine propeller entanglement removal device according to claim 2, characterized in that: The protective net kit (104) includes two protective rings (1041) and a net cover (1042). The net cover (1042) is fixed between the two protective rings (1041). Both the protective rings (1041) and the net cover (1042) are provided with grooves (1041.1) spaced apart in the circumference. The top of the protective ring (1041) is provided with a displacement hole (1041.2), and its inner wall is machined with a guide hole (1041.3) corresponding to the support rod (103). The protective net kit (104) is fitted onto the support rod (103) through the guide hole (1041.3).

4. The marine propeller entanglement removal device according to claim 3, characterized in that: The cutting component (2) includes a fixing plate (21), a longitudinal cutting component (22), a shifting component (23), and a transverse cutting component (24). The shifting component (23) is installed in the middle of the fixing plate (21), and the longitudinal cutting component (22) and the transverse cutting component (24) are located on both sides of the shifting component (23) and installed on the fixing plate (21). The fixing plate (21) is fixed to the hull.

5. The marine propeller entanglement removal device according to claim 4, characterized in that: The fixing plate (21) has a displacement hole (21.2) in the middle position, and longitudinal cutting holes (21.1) and transverse cutting holes (21.3) are respectively processed on both sides of the displacement hole (21.2).

6. The marine propeller entanglement removal device according to claim 5, characterized in that: The longitudinal cutting assembly (22) includes a first opening frame (221), a first linear bearing (222), a first electric cylinder (223), a first mounting plate (224), a first guide rod (225), a first module mounting plate (226), a first linear module (227), a longitudinal cutting blade (228), and a first motor (229). The first mounting plate (224) and the two first opening frames (221) form a gantry frame mounted on one side of the fixed plate (21). A through hole is machined in the middle of the first mounting plate (224). The first electric cylinder (223) is mounted in the middle of the first mounting plate (224), and its electric rod passes through the through hole in the middle of the first mounting plate (224). The two first linear bearings (222) are symmetrically mounted on the first mounting plate (224). 4) The first guide rod (225) passes through the first linear bearing (222), and its flange end is fixedly connected to the first module mounting plate (226). The end of the electric rod of the first electric cylinder (223) is also fixedly connected to the first module mounting plate (226). When the electric rod of the first electric cylinder (223) extends or retracts, it drives the first module mounting plate (226) to move up and down. The first linear module (227) and the first motor (229) are installed in a straight line on the first module mounting plate (226). The output shaft of the first motor (229) is connected to the lead screw of the first linear module (227) through a coupling. The longitudinal cutting blade (228) is installed on the nut of the first linear module (227). Under the drive of the first linear module (227), the longitudinal cutting blade (228) moves longitudinally.

7. The marine propeller entanglement removal device according to claim 6, characterized in that: The two cutting edges of the longitudinal cutting blade (228) are located in the same plane and are arranged in two opposite directions.

8. The marine propeller entanglement removal device according to claim 7, characterized in that: The displacement assembly (23) includes a second guide rod (231), a second linear bearing (232), a second sprocket (233), a second motor (234), a second mounting plate (235), a second optical bar (236), a lead screw (237), a second electric cylinder (238), a third linear bearing (239), a drive plate (251), a displacement rod (252), a nut (253), a T-shaped optical bar mounting seat (254), and a seated bearing (255). Four second guide rods (231) are mounted in a linear array on the fixed plate (21), and the second mounting plate (235) is connected to the fixed plate via four second linear bearings (232). The device is movably mounted on four guide rods (231). Two electric cylinders (238) are mounted on a fixed plate (21) and located on both sides of the displacement hole (21.2). The ends of the electric rods of the two electric cylinders (238) are fixedly connected to the bottom surface of the mounting plate (235). When the electric rods of the two electric cylinders (238) extend or retract, they drive the mounting plate (235) to move up and down along the guide rods (231). The lead screw (237) is mounted in the middle of the bottom surface of the mounting plate (235) through a bearing (255). Two optical rods (236) are respectively mounted through T-shaped optical rods. Mounting bracket (254) is installed on both sides of the bottom surface of mounting plate (235) and symmetrical to lead screw (237). Nut (253) is installed on lead screw (237). Linear bearing (239) is installed on linear guide (236). Drive plate (251) is installed on linear bearing (239) that mates with linear guide (236) and is fixedly connected to nut (253) installed on lead screw (237). Motor (234) is installed on top surface of mounting plate (235). Sprocket (233) is installed on output shaft of motor (234). A second sprocket (233) is installed at one end near the second motor (234). The second sprocket installed on the output shaft of the second motor (234) and the second sprocket installed on the end of the lead screw (237) near the second motor (234) are connected by chain drive. Four shift rods (252) are installed in a linear array on the bottom surface of the drive plate (251) and pass through the shift hole (21.2) of the fixed plate (21). When the output shaft of the second motor (234) rotates, the drive plate (251) and the shift rods (252) installed on the drive plate (251) move left and right through the sprocket chain mechanism and the lead screw nut mechanism.

9. The marine propeller entanglement removal device according to claim 8, characterized in that: The transverse cutting assembly (24) includes a second opening frame (241), a fourth linear bearing (242), a third electric cylinder (243), a third mounting plate (244), a third guide rod (245), a second module mounting plate (246), a second linear module (247), a transverse cutting blade (248), and a third motor (249). A gantry frame consisting of the third mounting plate (244) and two second opening frames (241) is mounted on one side of a fixed plate (21). A through hole is machined in the middle of the third mounting plate (244). The third electric cylinder (243) is mounted in the middle of the third mounting plate (244), and its electric rod passes through the through hole in the middle of the third mounting plate (244). Two fourth linear bearings (242) are symmetrically mounted on the third mounting plate (244). On the ), the No. 3 guide rod (245) passes through the No. 4 linear bearing (242), and its flange end is fixedly connected to the No. 2 module mounting plate (246). The end of the electric rod of the No. 3 electric cylinder (243) is also fixedly connected to the No. 2 module mounting plate (246). When the electric rod of the No. 3 electric cylinder (243) extends and retracts, it drives the No. 2 module mounting plate (246) to move up and down. The No. 2 linear module (247) and the No. 3 motor (249) are installed in a straight line on the No. 2 module mounting plate (246). The output shaft of the No. 3 motor (249) is connected to the lead screw of the No. 2 linear module (247) through a coupling. The horizontal cutting blade (248) is installed on the nut of the No. 2 linear module (247). Under the drive of the No. 2 linear module (247), the horizontal cutting blade (248) moves left and right.

10. A method for removing entangled material from a marine propeller, characterized in that, The marine propeller entanglement removal device according to claim 9 includes the following steps: S1. When the protective component (1) is wrapped with the wrapped material, the protective component (1) rotates under the action of external force until the groove (1041.1) of the protective component (1) is located below the longitudinal cutting component (22). The electric rod of the first electric cylinder (223) of the longitudinal cutting component (22) extends out, driving the first module mounting plate (226) and the longitudinal cutting blade (228) to move down. The longitudinal cutting blade (228) passes through the longitudinal cutting hole (21.1) and inserts into the groove (1041.1). The first linear module (227) starts, driving the longitudinal cutting blade (228) to move longitudinally along the protective component (1) to achieve a longitudinal cut of the wrapped material. S2. After completing one longitudinal cut of the entangled material, the electric rod of the first electric cylinder (223) retracts, driving the first module mounting plate (226) and the longitudinal cutting blade (228) to move upward until the longitudinal cutting blade (228) is pulled out of the groove (1041.1); S3. Repeat S1 and S2 until the winding in each groove (1041.1) is longitudinally cut; S4. The protective component (1) rotates under the action of external force until the displacement hole (1041.2) of the protective component (1) is located below the displacement component (23); S5. The output shaft of the second motor (234) of the shift assembly (23) rotates, driving the drive plate (251) and the shift rods (252) mounted on the drive plate (251) to move through the sprocket chain mechanism and the lead screw nut mechanism until the four shift rods (252) are directly above the four displacement holes (1041.2) of the protective net kit (104) at the far end of the protective assembly (1). The electric rod of the second electric cylinder (238) extends, driving the second mounting plate (235) to move down along the second guide rod (231) until the four shift rods (252) are inserted into the displacement holes (1041.2). In the middle, the output shaft of the second motor (234) of the shift assembly (23) rotates again, driving the drive plate (251) and the shift rod (252) mounted on the drive plate (251) to move through the sprocket chain mechanism and the screw nut mechanism, thereby driving the last protective net kit (104) to move until a certain gap is maintained between it and the adjacent left protective net kit (104). The electric rod of the second electric cylinder (238) retracts, driving the second mounting plate (235) to move up along the second guide rod (231) until the four shift rods (252) are pulled out from the displacement hole (1041.2); S6. The second linear module (247) is started, which drives the transverse cutting blade (248) to move longitudinally along the protective component (1) until the transverse cutting blade (248) is above the gap between the last protective net kit and the adjacent left protective net kit. The electric rod of the third electric cylinder (243) of the transverse cutting component (24) extends, which drives the second module mounting plate (246) and the transverse cutting blade (248) mounted on it to move down. The transverse cutting blade (248) passes through the transverse cutting hole (21.3) of the fixing plate (21) and is inserted into the gap between the last protective net kit and the adjacent left protective net kit. The protective component (1) rotates once under the action of external force to achieve a transverse cut of the entangled material. S7. The electric cylinder (243) of the transverse cutting assembly (24) retracts, driving the mounting plate (246) of the second module and the transverse cutting blade (248) to move upward until the transverse cutting blade (248) is pulled out from the gap between the last protective net kit and its adjacent left protective net kit. S8. Following the same operation as steps S6 and S7, make a transverse cut to the entanglement between all adjacent protective netting kits (104).

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