Electric yacht with noise reduction mechanism

Abstract

The application discloses an electric yacht with a noise reduction mechanism, which comprises a ship body, a propeller located at the tail of the ship body, a light shield plate on the upper side of the ship body, two vertical columns with upper ends hinged to the light shield plate and lower ends hinged to the ship body arranged on both sides of the end of the light shield plate close to the propeller, a connecting column with a lower end detachably connected to the bottom of the ship body and an upper end hinged to the light shield plate arranged at the end of the light shield plate away from the propeller, a fishing seat plate arranged on the connecting column, a turnover positioning assembly for overturning the fishing seat plate arranged between the fishing seat plate and the connecting column, and a sound-absorbing cotton pad wrapped on the upper side of the fishing seat plate, wherein the sound-absorbing cotton pad comprises a fitting part fixed on the upper surface of the fishing seat plate and a wrapping part integrally arranged on the circumferential side of the fitting part and used for wrapping the upper end of the propeller after the connecting column rotates. The motor position of the propeller is wrapped by the sound-absorbing cotton pad, and the sound-absorbing and sound-insulating effects of the sound-absorbing cotton pad are used to reduce noise.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric yacht design, and particularly relates to an electric yacht with a noise reduction mechanism. BACKGROUND

[0002] A yacht is a kind of high-grade durable consumer goods for water entertainment. It integrates functions of navigation, sports, entertainment and leisure, and meets the needs of individuals and families for enjoying life. In developed countries, yachts are mostly privately owned like cars.

[0003] At present, a rainwater collecting and discharging system for an electric yacht is disclosed in Chinese Patent No. CN215155572, published on December 14, 2021, which comprises a yacht body, and a rainwater collecting mechanism is arranged on a deck of the yacht body. The rainwater collecting mechanism comprises a water collecting tank, a plurality of strip-shaped holes are formed in the water collecting tank, a sealing plate is arranged in each strip-shaped hole, and a driving assembly for automatically controlling the rising or falling of the sealing plate is arranged in the water collecting tank.

[0004] In the existing design, a propeller needs to be installed at the tail of the yacht body, which comprises a motor located at the tail of the yacht body and a propeller located below the water surface. However, after the propeller is started, the motor will generate a large noise, thereby causing noise pollution to people on the boat and causing people's discomfort. SUMMARY

[0005] The purpose of the present application is to provide an electric yacht with a noise reduction mechanism, which can reduce the noise pollution generated by the motor.

[0006] The above technical purpose of the present application is achieved by the following technical scheme: an electric yacht with a noise reduction mechanism, comprising a hull, a propeller located at the tail of the hull, and a sunshade located on the upper side of the hull, wherein both sides of the end of the sunshade close to the propeller are provided with vertical columns hinged at the upper end to the sunshade and hinged at the lower end to the hull, a connecting column is arranged at the end of the sunshade away from the propeller, and the lower end of the connecting column is detachably connected to the bottom of the hull and the upper end is hinged to the sunshade, a fishing seat plate is arranged on the connecting column, a turnover positioning assembly for turning over the fishing seat plate is arranged between the fishing seat plate and the connecting column, a sound-absorbing cotton pad is wrapped on the upper side of the fishing seat plate, and the sound-absorbing cotton pad comprises a fitting part fixed to the upper surface of the fishing seat plate and a wrapping part integrally arranged on the circumferential side of the fitting part and wrapped on the upper end of the propeller after the connecting column is turned.

[0007] By adopting the technical scheme, when the hull is stopped at a fishing site and the propeller is not working, the propeller does not need to be subjected to noise reduction treatment, so the stand column is turned upward, the lower end of the connecting column is connected to the bottom of the hull, and at this time the light shield plate can be located above the hull; after the fishing seat plate is turned to the horizontal position by the turnover positioning assembly, people can sit on the fishing seat plate with the sound-absorbing cotton pad, and at this time the sound-absorbing cotton pad can provide comfortable seating for people.

[0008] When the hull needs to move forward and the propeller is working and emitting noise, the lower end of the connecting column is separated from the bottom of the hull, and then the connecting column is turned upward toward the side close to the light shield plate, and the stand column is turned downward toward the side close to the propeller, so that the folding of the stand column, the light shield plate and the connecting column on the hull is completed; when the connecting column is close to the propeller side, the fishing seat plate is turned over by the turnover positioning assembly, so that the upper surface of the fishing seat plate faces downward, and at this time the fishing seat plate can be moved to above the propeller with the connecting column, and then the sound-absorbing cotton pad on the fishing seat plate can abut against the upper side of the propeller, wherein the abutting part of the sound-absorbing cotton pad abuts against the upper surface of the propeller, and the wrapping part of the sound-absorbing cotton pad can wrap around the upper end of the propeller, so that the motor position of the propeller is wrapped by the sound-absorbing cotton pad, and the sound-absorbing and sound-insulating effects of the sound-absorbing cotton pad can reduce noise.

[0009] Further, the present application provides that the wrapping part is provided with a rubber neck ring on the side away from the abutting part, which is used to abut against the outer wall of the upper end of the propeller.

[0010] By adopting the technical scheme, the elastic property of the rubber neck ring can help the wrapping part to stably wrap around the upper end of the propeller.

[0011] Further, the present application provides that the turnover positioning assembly comprises a sliding sleeve sleeved on the connecting column, a first connecting arm hingedly connected to one end of the sliding sleeve and fixed to the lower surface of the fishing seat plate, a second connecting arm hingedly connected to one end of the side wall of the first connecting arm, a hook arranged at the end of the second connecting arm away from the first connecting arm, a ring groove arranged on the side of the connecting column, and a ring-shaped hanging groove arranged on the inner wall of the lower side of the ring groove and used for embedding the hook.

[0012] By adopting the technical scheme, when the fishing seat plate needs to be used for people to sit on, the fishing seat plate is turned upward, and then the second connecting arm is turned, so that the hook at the end of the second connecting arm is embedded in the ring-shaped hanging groove on the inner side of the ring groove, and at this time the fishing seat plate can be positioned at the height of the ring groove, and the sound-absorbing cotton pad on the fishing seat plate is arranged upward, so that people can conveniently sit on the fishing seat plate.

[0013] When the sound-absorbing cotton pad is used to wrap the upper end of the propeller, the first connecting arm is pushed upward, the hook at the end of the second connecting arm is released from the ring groove, then the fishing seat plate is rotated downward, the sound-absorbing cotton pad on the fishing seat plate is arranged downward, and finally the sound-absorbing cotton pad is conveniently wrapped on the upper end of the propeller on the lower side.

[0014] Since the ring groove and the annular hook groove are arranged on the circumferential side of the connecting column, the fishing seat plate can be rotated along the connecting column by the sliding sleeve and the hook, so that the fishing seat plate is adjusted to different positions on the circumferential side of the connecting column, and finally people can conveniently fish after sitting at different positions.

[0015] The fishing seat plate is conveniently adjusted to different positions on the circumferential side of the connecting column.

[0016] When the height of the fishing seat plate on the connecting column needs to be adjusted according to the height of the human body, the fishing seat plate can be moved up and down along the connecting column by the sliding sleeve, so that the fishing seat plate selects different heights of the ring groove, and finally the height of the fishing seat plate is adjusted.

[0017] The lower end of the connecting column is rotationally connected with a threaded column, and the bottom of the ship body away from the propeller is provided with a first internal thread sleeve for threadedly connecting the threaded column.

[0018] The threaded column is threadedly connected in the first internal thread sleeve at the bottom of the ship body by rotating the threaded column, so that the detachable connection between the lower end of the connecting column and the bottom of the ship body is realized.

[0019] The upper end of the threaded column is provided with an annular column with an inverted "convex" cross section, and the lower end surface of the connecting column is provided with an annular groove for embedding the annular column and cooperating with the shape of the annular column.

[0020] The threaded column is embedded in the annular groove on the lower end surface of the connecting column by the annular column, the cross section of the annular column is inverted "convex", and the annular groove cooperates with the shape of the annular column, so that the threaded column is circumferentially rotatable and axially fixedly connected to the lower end of the connecting column.

[0021] The ship body is provided with a second internal thread sleeve for threadedly connecting the threaded column near the end of the propeller, and the light shield plate is in a vertical state when the threaded column is threadedly connected with the second internal thread sleeve.

[0022] By adopting the technical scheme, when the ship body runs on the water surface and the propeller is damaged and loses power, the threaded column is removed from the first internal threaded sleeve, the vertical column and the connecting column are rotated, the light shield plate is swung towards the upper side of the propeller, then the threaded column is screwed with the second internal threaded sleeve, at this time, the light shield plate is in a vertical state, and the light shield plate can play the role of a sail, so that the ship body is conveniently landed on the shore by relying on the light shield plate and wind power.

[0023] Further, the light shield plate is provided with an opening in the middle part, and a sailcloth is arranged in the opening.

[0024] By adopting the technical scheme, the opening is arranged in the middle part of the light shield plate, the sailcloth is arranged in the opening, and the sailcloth is supported at the ends by the support rods, so that the sailcloth can be pushed by wind power to drive the ship body to move forward.

[0025] Further, a horizontal shaft is arranged at the center of the opening and is hingedly connected to the upper end of the connecting column, the middle part of the support rod is provided with a sliding sleeve arranged on the horizontal shaft, the two ends of the horizontal shaft are provided with positioning rings, a connecting spring is arranged on the horizontal shaft and abuts against the sliding sleeve at one end and the positioning ring at the other end, and a rotary positioning assembly is further arranged between the sliding sleeve and the light shield plate.

[0026] By adopting the technical scheme, when the sailcloth is subjected to wind power, the sailcloth can be stretched to an arc state, the support rods at the two ends of the sailcloth can be moved towards each other, the sliding sleeve can be moved along the horizontal shaft towards the side close to the positioning ring, and then the connecting spring can be compressed.

[0027] When people sit on the fishing seat plate and the light shield plate is used for sun-shading, the elastic restoring force of the connecting spring can push the sliding sleeve to move along the horizontal shaft away from the positioning ring, so that the sailcloth can be in a horizontal state to play a sun-shading effect.

[0028] The rotary positioning assembly drives the sailcloth to rotate, so that the angle of the sailcloth is adjusted, and finally the direction of the sailcloth can be controlled according to the wind direction.

[0029] Further, the rotary positioning assembly comprises a plurality of positioning grooves arranged on the circumferential outer wall of the sliding sleeve close to the propeller at one end of the horizontal shaft, a positioning rod hingedly connected to the positioning ring and embedded in any positioning groove, an elastic buckle arranged at the end of the positioning rod away from the positioning ring and in a C shape, and a clamping shaft arranged at the end of the light shield plate and clamped by the elastic buckle.

[0030] By adopting the technical scheme, the positioning rod is pulled out from the positioning groove, the sliding sleeve can rotate around the horizontal shaft center, thereby driving the canvas sleeve to rotate around the horizontal shaft center, the positioning rod is embedded in the positioning groove when the canvas rotates to the required position, the elastic buckle is clamped on the clamping shaft at the same time, the positioning of the sliding sleeve is completed through the positioning rod, and finally the position of the canvas after rotation is positioned.

[0031] In summary, the present application has the following advantages: when the hull stops at the fishing site and the propeller is not working, the propeller does not need to be noise-reduced, so the stand is turned up, the lower end of the connecting column is threadedly connected in the first inner threaded sleeve, the light shield plate is above the hull at this time, the fishing seat plate is then turned up, the second connecting arm is then rotated, the hook at the end of the second connecting arm is embedded in the annular hanging groove on the inner side of the ring groove, the fishing seat plate is positioned at the height of the ring groove at this time, the sound-absorbing cotton pad on the fishing seat plate is arranged upward, people can then conveniently sit on the fishing seat plate, and the sound-absorbing cotton pad can provide a comfortable seat for people.

[0032] When the hull needs to move forward and the propeller is working and making noise, the threaded column at the lower end of the connecting column is separated from the first inner threaded sleeve, the connecting column is then turned up toward the side close to the light shield plate, and the stand is turned down toward the side close to the propeller at this time, so the stand, the light shield plate and the connecting column are folded on the hull; when the connecting column moves close to the propeller, the first connecting arm is pushed up, the hook at the end of the second connecting arm is then pulled out of the ring groove, the fishing seat plate is then turned down, the sound-absorbing cotton pad on the fishing seat plate is arranged downward at this time, the fishing seat plate can then move to above the propeller with the connecting column, the sound-absorbing cotton pad on the fishing seat plate can then abut against the propeller, the abutting part of the sound-absorbing cotton pad abuts against the upper surface of the propeller, and the wrapping part of the sound-absorbing cotton pad can wrap around the upper end of the propeller, so the motor position of the propeller can be wrapped by the sound-absorbing cotton pad, the sound-absorbing and sound-insulating effects of the sound-absorbing cotton pad can reduce the noise.

[0033] When the hull moves on the water surface and the propeller is damaged and loses power, the threaded column is removed from the first inner threaded sleeve, the stand and the connecting column are rotated, the light shield plate swings toward the upper side of the propeller, the threaded column is then threadedly connected with the second inner threaded sleeve, the light shield plate is in a vertical state at this time, and the canvas in the light shield plate can function as a sail, so the hull can rely on the light shield plate and wind force to dock. BRIEF DESCRIPTION OF DRAWINGS

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the present invention. At this time, the boat is stopped at the fishing spot and the sound-absorbing cotton pad can provide a comfortable place for people to sit.

[0036] Figure 2 This is an enlarged view of the connection relationship between the light shield, the column, the connecting column and the fishing seat plate in this invention;

[0037] Figure 3 This is a cross-sectional view of the connection relationship between the first internal threaded sleeve, the connecting post, and the threaded post in this invention;

[0038] Figure 4 This is a partial cross-sectional view of the connection relationship between the connecting column, fishing seat plate, sound-absorbing cotton pad, and flip positioning component in this invention;

[0039] Figure 5 This is a structural schematic diagram of the present invention. At this time, the thruster needs to work, while the light shield, column and connecting column are folded, and the sound-absorbing cotton pad is wrapped around the upper end of the thruster.

[0040] Figure 6 This is a schematic diagram of the structure of the present invention. At this time, the threaded column is threadedly connected to the second internal threaded sleeve and the light-shielding plate is in a vertical state.

[0041] Figure 7 This is an enlarged view of the connection relationship between the light-shielding plate, the column, and the connecting column after they have been inverted in this invention;

[0042] Figure 8 yes Figure 7 Enlarged view of part A in the middle.

[0043] In the diagram, 1. Hull; 11. First internal threaded sleeve; 12. Second internal threaded sleeve; 2. Propeller; 3. Sunshade; 31. Column; 32. Connecting column; 321. Threaded column; 3211. Annular column; 322. Annular groove; 33. Opening; 34. Horizontal shaft; 341. Positioning ring; 342. Connecting spring; 4. Fishing seat plate; 41. Sound-absorbing cotton pad; 411. Fitting part; 412. Wrapping part; 4121. Rubber shrinking ring; 5. Flip positioning assembly; 51. Sliding sleeve; 52. First connecting arm; 53. Second connecting arm; 54. Hook; 55. Annular groove; 56. Annular hanging groove; 6. Canvas; 61. Support rod; 611. Sliding sleeve; 7. Rotary positioning assembly; 71. Positioning groove; 72. Positioning rod; 73. Elastic buckle; 74. Clip shaft. Embodiments

[0044] The technical solutions in the embodiments will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0045] A motor yacht with a noise reduction mechanism, referring to Figure 1 , Figure 2 , Figure 3 The motor yacht with a noise reduction mechanism comprises a hull 1, a propeller 2 and a sunshade 3. The propeller 2 is installed at the tail of the hull 1. The propeller 2 is a prior art, comprising a motor at the upper end and a propeller below the water surface. The sunshade 3 is located on the upper side of the hull 1. The sunshade 3 is provided with vertical columns 31 on both sides near one end of the propeller 2. The upper end of the vertical column 31 is hinged to the sunshade 3 and the lower end is hinged to the hull 1. A connecting column 32 is arranged at the middle position of the end of the sunshade 3 away from the propeller 2. The lower end of the connecting column 32 is detachably connected to the bottom of the hull 1 and the upper end is hinged to the sunshade 3. The lower end of the connecting column 32 is rotationally connected with a threaded column 321. The bottom of the hull 1 away from the propeller 2 is welded with a first internal thread sleeve 11 for threadedly connecting the threaded column 321. The upper end of the threaded column 321 is welded with an annular column 3211 with a reverse "convex" cross section. The lower end surface of the connecting column 32 is provided with an annular groove 322 for embedding the annular column 3211 and cooperating with the shape of the annular column 3211. At this time, the threaded column 321 is circumferentially rotationally connected and axially fixedly connected to the lower end of the connecting column 32.

[0046] Referring to Figure 1 , Figure 2 , Figure 4 A fishing seat 4 is further arranged on the connecting column 32. The fishing seat 4 can be used for people to sit when fishing. A turnover positioning assembly 5 for turning over the fishing seat 4 is arranged between the fishing seat 4 and the connecting column 32. The turnover positioning assembly 5 comprises a sliding sleeve 51, a first connecting arm 52, a second connecting arm 53, a hook 54, a ring groove 55 and an annular hanging groove 56. The sliding sleeve 51 is sleeved on the connecting column 32. One end of the first connecting arm 52 is hinged to the sliding sleeve 51 and the other end is fixed to the lower surface of the fishing seat 4 by bolts. One end of the second connecting arm 53 is hinged to the side wall of the first connecting arm 52. The hook 54 is integrally arranged at the end of the second connecting arm 53 away from the first connecting arm 52. The ring groove 55 is arranged on the circumferential side of the connecting column 32. The ring groove 55 is provided with a plurality of ring grooves 55 and is uniformly distributed along the extension direction of the connecting column 32. The annular hanging groove 56 is arranged on the inner wall of the lower side of the ring groove 55 and is embedded with the hook 54.

[0047] Referring to Figure 1 , Figure 2 , Figure 4 , Figure 5 , the upper side of the fishing seat plate 4 is wrapped with an acoustic cotton pad 41 made of acoustic sponge, which is processed from melamine foam and has unique comprehensive properties such as sound absorption, heat insulation, flame retardation, high temperature resistance, water absorption, and light weight. The acoustic cotton pad 41 includes a fitting part 411 and a wrapping part 412. The fitting part 411 is bonded and fixed on the upper surface of the fishing seat plate 4, and the wrapping part 412 is integrally arranged on the circumferential side of the fitting part 411. The wrapping part 412 can be used to wrap the upper end of the propeller 2 after the connecting column 32 rotates. The circumferential side of the end of the wrapping part 412 away from the fitting part 411 is bonded with a rubber neck ring 4121, which can be used to abut against the outer wall of the upper end of the propeller 2.

[0048] Referring to Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , the second internal threaded sleeve 12 for threaded connection with the threaded column 321 is welded at the end of the hull 1 close to the propeller 2. When the threaded column 321 is threaded with the second internal threaded sleeve 12, the sunshade 3 is in a vertical state. The middle part of the sunshade 3 is provided with an opening part 33, and the opening part 33 is provided with a canvas 6. A horizontal shaft 34 for hinging the upper end of the connecting column 32 is welded at the center of the opening part 33. The two ends of the canvas 6 are bonded and fixed with support rods 61, and the middle part of the support rods 61 is welded with a sliding sleeve 611 sleeved on the horizontal shaft 34. At this time, the support rods 61 can be slidably connected to the horizontal shaft 34. The two ends of the horizontal shaft 34 are welded with positioning rings 341, and the horizontal shaft 34 is sleeved with a connecting spring 342 abutting against the sliding sleeve 611 at one end and abutting against the positioning ring 341 at the other end.

[0049] Referring to Figure 7 , Figure 8 , a rotary positioning assembly 7 is further arranged between the sliding sleeve 611 and the sunshade 3. The rotary positioning assembly 7 includes positioning grooves 71, positioning rods 72, elastic buckles 73, and clamping shafts 74. The positioning grooves 71 are arranged in multiple numbers, and the multiple positioning grooves 71 are arranged on the circumferential outer wall of the sliding sleeve 611 at the end of the horizontal shaft 34 close to the propeller 2. One end of the positioning rod 72 is hinged to the positioning ring 341 and is used to be embedded in any positioning groove 71. The elastic buckle 73 is welded at the end of the positioning rod 72 away from the positioning ring 341 and has a C-shaped structure. The elastic buckle 73 is made of spring steel. The clamping shaft 74 is welded at the end of the sunshade 3 and is used for clamping the elastic buckle 73.

[0050] Principle: when the hull 1 stops at the fishing site and the propeller 2 does not work, there is no need to reduce the noise of the propeller 2, so the column 31 is turned up, and the lower end of the connecting column 32 is screwed into the first inner threaded sleeve 11 through the threaded column 321, at this time the light shield 3 can be located above the hull 1, and the fishing seat plate 4 is turned up, then the second connecting arm 53 is turned, so that the hook 54 at the end of the second connecting arm 53 is embedded in the annular hanging groove 56 inside the ring groove 55, at this time the fishing seat plate 4 can be positioned at the height of the ring groove 55, and the sound-absorbing cotton pad 41 on the fishing seat plate 4 is set upward, then people can easily sit on the fishing seat plate 4, at this time the soft sound-absorbing cotton pad 41 can provide comfortable seating for people.

[0051] When the hull 1 needs to move forward and the propeller 2 works to emit noise, the threaded column 321 at the lower end of the connecting column 32 is separated from the first inner threaded sleeve 11, then the connecting column 32 is turned up towards the side close to the light shield 3, while the column 31 is turned down towards the side close to the propeller 2, at this time the folding and storage of the column 31, the light shield 3 and the connecting column 32 on the hull 1 is completed; at the same time, when the connecting column 32 moves towards the side close to the propeller 2, the first connecting arm 52 is pushed up, so that the hook 54 at the end of the second connecting arm 53 is pulled out of the ring groove 55, then the fishing seat plate 4 is turned down, so that the sound-absorbing cotton pad 41 on the fishing seat plate 4 is set downward, at this time the fishing seat plate 4 can move to the upper side of the propeller 2 with the connecting column 32, then the sound-absorbing cotton pad 41 on the fishing seat plate 4 can be in contact with the propeller 2, wherein the contact part 411 of the sound-absorbing cotton pad 41 is in contact with the upper surface of the propeller 2, and the wrapping part 412 of the sound-absorbing cotton pad 41 can wrap around the upper end of the propeller 2, at this time the motor position of the propeller 2 can be wrapped by the sound-absorbing cotton pad 41, and the sound-absorbing and sound-insulating effect of the sound-absorbing cotton pad 41 can reduce noise; at the same time, one end of the light shield 3 is located on the upper side of the propeller 2 and the other end is located on the hull 1, so the light shield 3 is in an inclined state (see Figure 5 ), the inclined light shield 3 can play a role similar to the car spoiler, when the hull 1 drives at high speed through the propeller, the air resistance forms a downward pressure, which tries to offset the lift, effectively controls the airflow downward pressure, so that the wind resistance coefficient is correspondingly reduced, increasing the high-speed driving stability of the hull 1.

[0052] When the hull 1 drives on the water surface and the propeller 2 loses power due to damage, the threaded column 321 is removed from the first inner threaded sleeve 11, and the column 31 and the connecting column 32 are turned, so that the light shield 3 swings towards the upper side of the propeller 2, then the threaded column 321 is screwed with the second inner threaded sleeve 12, at this time the light shield 3 is in a vertical state, the canvas 6 in the light shield 3 can play the role of a sail, so that the hull 1 can rely on the light shield 3 and wind power to dock.

Claims

1. An electric yacht with noise reduction mechanism, comprising a hull (1), a propeller (2) located at the tail of the hull (1), characterized in that: The utility model also includes the sunshade (3) of ship body (1) upper side, both sides of the sunshade (3) are provided with the stand (31) which is hinged with the sunshade (3) on the upper end and is hinged with the ship body (1) on the lower end near one end of propeller (2), the sunshade (3) is provided with the connecting column (32) which is detachably connected with the bottom of ship body (1) on the lower end and is hinged with the sunshade (3) on the upper end far from one end of propeller (2), the connecting column (32) is provided with the fishing seat board (4), the fishing seat board (4) and the connecting column (32) are provided with the turnover positioning assembly (5) for overturning the fishing seat board (4), the upper side of fishing seat board (4) is wrapped with the sound-absorbing cotton pad (41), the sound-absorbing cotton pad (41) includes the fitment (411) fixed on the upper surface of fishing seat board (4), the wrapping part (412) integrally arranged on the circumferential side of fitment (411) and used for wrapping on the upper end of propeller (2) after the rotating of connecting column (32), the circumferential side of the end far from fitment (411) of wrapping part (412) is provided with the rubber neck ring (4121) for abutting on the outer wall of the upper end of propeller (2), the lower end of connecting column (32) is rotatably connected with the threaded column (321), the bottom of the ship body (1) far from one end of propeller (2) is provided with the first internal thread sleeve (11) for the threaded connection of threaded column (321), when the ship body (1) needs to go forward and the propeller (2) works and emits noise, the threaded column (321) on the lower end of connecting column (32) is separated from the first internal thread sleeve (11), then the connecting column (32) can be rotated upward towards the side close to the sunshade (3), and the stand (31) is rotated downward towards the side close to the propeller (2), at this time, the folding and storage of the stand (31), the sunshade (3) and the connecting column (32) on the ship body (1) can be completed, when the connecting column (32) is close to one side of the propeller (2), the first connecting arm (52) is pushed upward, the hook (54) on the end of the second connecting arm (53) is separated from the ring groove (55), then the fishing seat board (4) is rotated downward, the sound-absorbing cotton pad (41) on the fishing seat board (4) is arranged downward, at this time, the fishing seat board (4) can be moved to the upper side of the propeller (2) along with the connecting column (32), then the sound-absorbing cotton pad (41) on the fishing seat board (4) can abut on the upper side of the propeller (2), wherein the fitment (411) of the sound-absorbing cotton pad (41) abuts on the upper surface of the propeller (2), and the wrapping part (412) of the sound-absorbing cotton pad (41) can wrap on the upper end of the propeller (2), at this time, the motor position of the propeller (2) can be wrapped by the sound-absorbing cotton pad (41), the sound-absorbing and sound-insulating effects of the sound-absorbing cotton pad (41) can be used to reduce noise.

2. The electric yacht with noise reduction mechanism according to claim 1, characterized in that: The turnover positioning assembly (5) comprises a sliding sleeve (51) sleeved on the connecting column (32), a first connecting arm (52) with one end hinged to the sliding sleeve (51) and the other end fixed to the lower surface of the fishing seat plate (4), a second connecting arm (53) with one end hinged to the side wall of the first connecting arm (52), a hook (54) arranged at the end of the second connecting arm (53) away from the first connecting arm (52), a ring groove (55) opened in the peripheral side of the connecting column (32), and a ring-shaped hanging groove (56) opened in the lower inner wall of the ring groove (55) and embedded with the hook (54).

3. The electric yacht with noise reduction mechanism according to claim 2, characterized in that: The ring groove (55) is provided with a plurality of ring grooves (55) which are uniformly and spacedly distributed along the extension direction of the connecting column (32).

4. The electric yacht with noise reduction mechanism according to claim 1, characterized in that: The upper end of the threaded column (321) is provided with a ring-shaped column (3211) with an inverted "convex" cross section, and the lower end surface of the connecting column (32) is provided with a ring-shaped groove (322) embedded with the ring-shaped column (3211) and matched with the shape of the ring-shaped column (3211).

5. The electric yacht with noise reduction mechanism according to claim 1, characterized in that: The hull (1) is provided with a second internal threaded sleeve (12) for threaded connection with the threaded column (321) near the end of the propeller (2), and the sunshade (3) is in a vertical state when the threaded column (321) is threaded with the second internal threaded sleeve (12).

6. The electric yacht with noise reduction mechanism according to claim 5, characterized in that: The sunshade (3) is provided with an opening portion (33) in the middle, the opening portion (33) is provided with a canvas (6), and the both ends of the canvas (6) are provided with support rods (61) slidably connected in the opening portion (33).

7. The electric yacht with noise reduction mechanism according to claim 6, characterized in that: The center of the opening portion (33) is provided with a horizontal shaft (34) for hinging the upper end of the connecting column (32), the middle of the support rod (61) is provided with a sliding sleeve (611) sleeved on the horizontal shaft (34), the both ends of the horizontal shaft (34) are provided with positioning rings (341), the horizontal shaft (34) is sleeved with a connecting spring (342) with one end abutting against the sliding sleeve (611) and the other end abutting against the positioning ring (341), and a rotation positioning assembly (7) is further arranged between the sliding sleeve (611) and the sunshade (3).

8. The electric yacht with noise reduction mechanism according to claim 7, characterized in that: The rotation positioning assembly (7) comprises a plurality of positioning grooves (71) opened in the peripheral outer wall of the sliding sleeve (611) near the end of the horizontal shaft (34) close to the propeller (2), a positioning rod (72) with one end hinged to the positioning ring (341) and embedded in any positioning groove (71), an elastic buckle (73) arranged at the end of the positioning rod (72) away from the positioning ring (341) and in a C shape, and a clamping shaft (74) arranged at the end of the sunshade (3) and clamped with the elastic buckle (73).

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