Lifting device, water propeller and water movable device

Abstract

This utility model relates to the field of water-based mobile equipment technology, and discloses a lifting device, a water-based propulsion device, and a water-based mobile equipment. The lifting device includes: a fixed bracket for connecting a water-based carrier; a rotating bracket rotatably connected to the fixed bracket for driving the water-based propulsion device to lift relative to the water-based carrier; a drive mechanism including a lifting motor, a transmission mechanism connected to the lifting motor, the lifting motor driving the rotating bracket to lift relative to the fixed bracket via the transmission mechanism; and an auxiliary structure connected to the transmission mechanism, and having a control end disposed on the side of the lifting device, the side being parallel to the lifting direction of the water-based propulsion device. The control end is used to drive the rotating bracket to lift relative to the fixed bracket via the transmission mechanism when the lifting motor fails. The control end is disposed on the side of the lifting device, facilitating operation of the auxiliary structure from the side of the lifting device, and facilitating manual lifting operation.

Description

Technical Field

[0001] This utility model relates to the field of water-based mobile equipment technology, and in particular to a lifting device, a water propeller, and a water-based mobile equipment. Background Technology

[0002] In the field of mobile equipment in waterways, such as ships, lifting devices can realize the core functions of shallow water obstacle avoidance, fixed lifting posture during mooring, and adjustment of navigation attitude. As ship power gradually becomes electric, electric lifting systems are gradually replacing traditional manual mechanical lifting systems. However, this technology system still lacks safety emergency insurance measures. When the outboard motor or circuit is damaged or fails, the electric lifting device will not be able to operate, which may cause the outboard motor to malfunction and make it impossible to drive the ship back to shore, resulting in a safety accident. Utility Model Content

[0003] This invention provides a lifting device, a water propeller, and a water-mobile device, which can ensure the normal operation of the water propeller by driving the lifting device through an additional lifting method when the motor is damaged.

[0004] In a first aspect, a lifting device is provided, the lifting device including a drive mechanism, a transmission mechanism, a rotating support, and an auxiliary structure; the drive mechanism includes a lifting motor. The transmission mechanism is connected to the tilting motor, and the rotating bracket is connected to the transmission mechanism. The tilting motor is used to drive the rotating bracket to tilt relative to the water carrier via the transmission mechanism; the rotating bracket is used to drive the water propulsion device to tilt relative to the water carrier. The auxiliary structure includes an auxiliary transmission assembly and a control component connected to the auxiliary transmission assembly. The auxiliary transmission assembly is connected to the transmission mechanism. The control component includes a control end located on the side of the lifting device. The side is parallel to the lifting direction of the water propulsion device. The control end is used to drive the rotating bracket to lift relative to the water carrier via the transmission mechanism when the lifting motor fails.

[0005] Optionally, the transmission mechanism includes a lead screw and a nut assembly connected to the lead screw, the tilting motor is coaxially connected to the lead screw, the nut assembly is connected to the rotating bracket, and the auxiliary structure is connected to the lead screw.

[0006] Optionally, it also includes a fixed bracket for connecting the water carrier, and the rotating bracket is rotatably connected to the fixed bracket so that the rotating bracket can tilt relative to the fixed bracket.

[0007] Optionally, the control element includes a rotating element connected to the auxiliary transmission assembly, and the control end is a cam disposed on the rotating element.

[0008] Optionally, the auxiliary transmission assembly includes a gear set connected to the transmission mechanism, and the rotating member is connected to the gear set.

[0009] Optionally, the gear set includes: a first bevel gear and a second bevel gear, the rotating member is coaxially and fixedly connected to the first bevel gear, the first bevel gear meshes with the second bevel gear, and the second bevel gear is coaxially and fixedly connected to the lead screw; the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the lead screw to rotate; the rotation planes of the first bevel gear and the second bevel gear are different.

[0010] Optionally, the rotating component is a connecting rod, the rotation planes of the first bevel gear and the second bevel gear are perpendicular, the first bevel gear is located on the side of the lead screw, the end of the first bevel gear near the lead screw meshes with the second bevel gear, the end of the first bevel gear away from the lead screw is coaxially and fixedly connected to the connecting rod, and the cam of the connecting rod is located at the end of the connecting rod away from the first bevel gear.

[0011] Optionally, the auxiliary transmission assembly includes a turbine and a worm gear, the control element is coaxially and fixedly connected to the worm gear, the control element is used to drive the worm gear to rotate, the worm gear drives the turbine gear to rotate, the turbine gear is coaxially and fixedly connected to the transmission mechanism, and the turbine gear drives the transmission mechanism to rotate.

[0012] Optionally, the transmission mechanism includes a lead screw, a nut assembly, a push rod, and a spur gear. The nut assembly is sleeved on the lead screw and threadedly engaged with it. The lead screw is connected to the spur gear, and the nut assembly is connected to the push rod. The spur gear can drive the lead screw to rotate, causing the nut assembly to drive the push rod to move along the axis of the lead screw, thereby generating a lifting force on the push rod.

[0013] Optionally, the spur gear includes a first spur gear, a second spur gear, and a third spur gear. The first spur gear is connected to the drive mechanism, meshes with the second spur gear, and the second spur gear also meshes with the third spur gear. The third spur gear is coaxially and fixedly connected to the lead screw, thereby driving the lead screw to rotate.

[0014] Optionally, the first spur gear, the second spur gear, and the third spur gear are arranged side by side.

[0015] Optionally, the drive mechanism further includes a reduction gearbox, the tilting motor is connected to the reduction gearbox, and the reduction gearbox is connected to the spur gear to drive the spur gear to rotate.

[0016] Optionally, the transmission mechanism and the drive mechanism are arranged side by side, and the axis of the lifting motor is parallel to the axis of the lead screw.

[0017] In a second aspect, a water propulsion device is provided, the propulsion device including a propulsion body and the lifting device described in the first aspect, the propulsion body being connected to the rotating support.

[0018] Thirdly, the water-based mobile device includes a water-based carrier and the water-based thruster described in the second aspect, wherein the water-based thruster is connected to the water-based carrier.

[0019] The aforementioned lifting device, water propulsion device, and water-based mobile equipment include a lifting device comprising: a driving mechanism, a transmission mechanism, a rotating support, and an auxiliary structure; the driving mechanism includes a lifting motor; the transmission mechanism is connected to the lifting motor, and the rotating support is connected to the transmission mechanism; the lifting motor drives the rotating support to lift relative to the water-based carrier via the transmission mechanism; the rotating support drives the water propulsion device to lift relative to the water-based carrier; the auxiliary structure includes an auxiliary transmission assembly and a control component connected to the auxiliary transmission assembly; the auxiliary transmission assembly is connected to the transmission mechanism; the control component includes a control end located on the side of the lifting device, the side being parallel to the lifting direction of the water propulsion device; the control end is used to drive the rotating support relative to the water-based carrier via the transmission mechanism when the lifting motor fails; by connecting the auxiliary structure to the transmission mechanism and positioning the control end on the side of the lifting device, it is convenient to operate the control end of the auxiliary structure from the side of the lifting device, facilitating manual lifting operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the lifting device in one embodiment of the present invention; Figure 2 This is an exploded cross-sectional view of the lifting device in one embodiment of this utility model; Figure 3 This is a partial structural schematic diagram of a water-based mobile device according to one embodiment of the present invention; Figure 4 This is a schematic diagram of the lifting device in another embodiment of the present invention; Figure 5This is a schematic diagram of the lifting device in another embodiment of the present invention.

[0022] Reference numerals: Water-based mobile device 100, water-based propeller 101, lifting device 110, fixed bracket 111, rotating bracket 112, drive mechanism 113, lifting motor 1131, reduction gearbox 1132, transmission mechanism 114, connecting screw 1141, nut assembly 1142, push rod 1143, first spur gear 1144, second spur gear 1145, third spur gear 1146, auxiliary structure 115, worm gear 1151, gear set 1152, first bevel gear 521, second bevel gear 522, control component 1153, rotating component 1531, cam 1532, turbine 1154, propeller body 120. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0024] In this application, such as Figure 3 As shown, the mobile waterway device 100 may include various water transportation vehicles such as passenger ships, yachts, cruise ships, sailboats, steamships, unmanned patrol boats, and waterborne drones.

[0025] Please see Figures 1-2 , Figure 1 and Figure 2 This is a schematic diagram of a lifting device provided in an embodiment of the present invention. The lifting device 110 includes: a fixed bracket 111 for connecting a water carrier; a rotating bracket 112 rotatably connected to the fixed bracket 111 for driving a water propulsion device to lift relative to the water carrier; a drive mechanism 113 including a lifting motor 1131, which is disposed on one of the fixed bracket 111 and the rotating bracket 112; a transmission mechanism 114 connected to the lifting motor 1131 and the other of the fixed bracket 111 and the rotating bracket 112, wherein the lifting motor 1131 is used to drive the rotating bracket 112 to lift relative to the fixed bracket 111 via the transmission mechanism 114; and an auxiliary structure 115 connected to the transmission mechanism 114 and having a control end disposed on the side of the lifting device 110, the side being parallel to the lifting direction of the water propulsion device, wherein the control end is used to drive the rotating bracket 112 to lift relative to the fixed bracket 112 via the transmission mechanism 114 when the lifting motor 1131 fails.

[0026] The waterborne carrier can be a ship hull, and the waterborne propulsion device is specifically the power engine of the waterborne propulsion unit 101, such as the propulsion motor of the outboard motor. The lifting motor 1131 can drive the rotating bracket 112 to lift relative to the fixed bracket 111 through the transmission mechanism 114, thereby realizing the electric lifting function.

[0027] By setting the auxiliary structure 115 to connect with the transmission mechanism 114, when the lifting motor 1131 fails or is damaged, causing the electric lifting function to fail, the user can drive the transmission mechanism 114 through the control terminal, and then drive the rotating bracket to lift relative to the fixed bracket 111 through the transmission mechanism 114, ensuring that the lifting function operates normally.

[0028] By setting the control end on the side of the lifting device 110, and aligning the side of the lifting device 110 with the longitudinal direction of the ship, it is convenient for the ship's driver to operate the control end on the side. This allows the driver to operate the control end of the auxiliary structure 115 from the side of the lifting device 110, facilitating manual lifting operations. The driver does not need to operate from the bottom, reducing the difficulty of operation.

[0029] The lifting motor 1131 can be mounted on a support bracket that is rotatably connected to the fixed bracket 111, so that the lifting motor and lifting assembly can rotate and lift the rotating bracket. The transmission mechanism 114 is connected to the lifting motor 1131 and the rotating bracket 112. The lifting motor 1131 drives the rotating bracket 112 to lift relative to the fixed bracket 111 via the transmission mechanism 114.

[0030] In one embodiment, such as Figures 1-2 , Figures 4-5 As shown, the transmission mechanism 114 includes a lead screw 1141 and a nut assembly 1142 connecting the lead screw 1141. The lifting motor 1131 is coaxially connected to the lead screw 1141. The nut assembly 1142 is connected to the rotating bracket 112. The auxiliary structure 115 is connected to the lead screw 1141.

[0031] The lifting motor 1131 drives the lead screw 1141 to rotate. The lead screw 1141 cooperates with the nut assembly 1142, allowing the nut assembly 1142 to move along the axis of the lead screw 1141. The nut assembly 1142 is connected to the rotating bracket 112 via a push rod. The lifting motor can drive the rotating bracket to lift relative to the fixed bracket 111 via the lead screw and lead screw nut.

[0032] Specifically, the tilting motor drives the lead screw to rotate, causing the nut assembly to move axially along the lead screw. The push rod is threadedly connected to the nut assembly, which in turn drives the push rod to move along the axis of the lead screw, allowing the push rod to extend and retract relative to the fixed bracket. The push rod is rotatably connected to the rotating bracket to convert the extension torque of the lead screw into the rotation torque of the rotating bracket, thereby driving the rotating bracket to tilt.

[0033] The auxiliary structure 115 is connected to the lead screw 1141, which allows the user to operate the control end of the auxiliary structure 115. The auxiliary structure can drive the rotating bracket to tilt relative to the fixed bracket 111 via the lead screw and lead screw nut.

[0034] Specifically, in some implementations, the user can operate the auxiliary structure 115 with tools such as a wrench, thereby driving the lead screw to rotate, without the need for additional auxiliary transmission components.

[0035] In one embodiment, such as Figures 1-2 , Figure 4 As shown, the auxiliary structure 115 includes an auxiliary transmission component and a control component 1153 connected to the auxiliary transmission component. The control end is disposed on the control component 1153, and the auxiliary drive component is connected to the transmission mechanism 114.

[0036] Among them, such as Figure 3 As shown, the side of the lifting device 110 is roughly parallel to the side of the outboard motor. The side of the outboard motor can be understood as the side of the lifting device. In actual operation, the operator does not need to operate from the bottom, reducing the difficulty of operation.

[0037] The end of the control component is positioned facing the side of the lifting device. The operator can operate the control end of the control component 1153 from the side of the lifting device 110, for example, by operating the control component from the side with a wrench. The control component 1153 drives the rotating bracket to lift relative to the fixed bracket 111 via the auxiliary transmission assembly and transmission mechanism 114, thereby realizing manual lifting. For additional control components, it is usually necessary to add an additional drive end to the lead screw. However, adding a drive end to the lead screw can only be done at the bottom or the top. It is difficult to operate at the bottom and the top is blocked. Therefore, side operation is convenient.

[0038] In one embodiment, the control element includes a rotating element 1531 connected to the auxiliary transmission assembly, and the control end is a cam 1532 disposed on the rotating element.

[0039] The user can rotate the cam of the rotating component, which drives the rotating bracket to tilt relative to the fixed bracket 111 via the auxiliary transmission component and transmission mechanism 114, thereby achieving manual tilting. The auxiliary transmission component can assist in manual tilting.

[0040] In one embodiment, such as Figure 1As shown, the auxiliary transmission assembly includes a gear set 1152 connected to the transmission mechanism 114, and the rotating component is connected to the gear set 1152.

[0041] The user can rotate the cam of the rotating component, which drives the rotating bracket to tilt relative to the fixed bracket 111 via the gear set 1152 and the transmission mechanism 114, thereby achieving manual tilting. The gear set 1152 can assist in manual tilting.

[0042] In one embodiment, such as Figure 1 As shown, the gear set 1152 includes: a first bevel gear 521 and a second bevel gear 522. A rotating component is coaxially and fixedly connected to the first bevel gear 521. The first bevel gear 521 meshes with the second bevel gear 522. The second bevel gear 522 is coaxially and fixedly connected to the lead screw 1141. The first bevel gear 521 drives the second bevel gear 522 to rotate, and the second bevel gear 522 drives the lead screw 1141 to rotate. The rotation planes of the first bevel gear 521 and the second bevel gear 522 are different.

[0043] The user can operate the cam of the rotating component to make the rotating component rotate. The rotating component drives the first bevel gear 521 to rotate, the first bevel gear 521 drives the second bevel gear 522 to rotate, and the second bevel gear 522 drives the lead screw 1141 to rotate. Thus, the rotating bracket can be driven to tilt relative to the fixed bracket 111 through the lead screw and lead screw nut.

[0044] In one embodiment, such as Figure 1 As shown, the rotating component is a connecting rod. The rotation planes of the first bevel gear 521 and the second bevel gear 522 are perpendicular. The first bevel gear 521 is located on the side of the lead screw 1141. The end of the first bevel gear 521 near the lead screw 1141 meshes with the second bevel gear 522. The end of the first bevel gear 521 away from the lead screw 1141 is coaxially and fixedly connected to the connecting rod. The cam of the connecting rod is located at the end of the connecting rod away from the first bevel gear 521.

[0045] The user can operate the cam of the rotating component to make the rotating component rotate, which drives the first bevel gear 521 to rotate. The first bevel gear 521 drives the second bevel gear 522 to rotate, and the second bevel gear 522 drives the lead screw 1141 to rotate. Thus, the rotating bracket 112 can be driven to tilt relative to the fixed bracket 111 through the lead screw 1141 and the nut assembly.

[0046] like Figure 4As shown, in another embodiment, the auxiliary transmission assembly includes a turbine 1154 and a worm gear 1151. A control member is coaxially and fixedly connected to the worm gear 1151. The control member is used to drive the worm gear 1151 to rotate, and the worm gear 1151 drives the turbine 1154 to rotate. The turbine 1154 is coaxially and fixedly connected to the transmission mechanism 114, and the turbine 1154 drives the transmission mechanism 114 to rotate.

[0047] The user can operate the control end of the control component from the side of the lifting device 110. The control component drives the worm gear 1151 to rotate, the worm gear 1151 drives the turbine 1154 to rotate, the turbine 1154 drives the transmission mechanism 114 to rotate, and the transmission mechanism drives the rotating bracket to lift relative to the fixed bracket 111.

[0048] Specifically, the turbine 1154 drives the lead screw to rotate, and the lead screw and lead screw nut drive the rotating bracket to tilt relative to the fixed bracket 111, thereby realizing manual tilting.

[0049] Optionally, the user can rotate the cam of the rotating component, which drives the rotating bracket to tilt relative to the fixed bracket 111 via the turbine 1154, the worm 1151 and the transmission mechanism 114, thereby achieving manual tilting. The turbine 1154 and the worm 1151 can assist in manual tilting.

[0050] In one embodiment, such as Figures 1-2 , Figures 4-5 As shown, the transmission mechanism 114 includes a lead screw 1141, a nut assembly 1142, a push rod 1143, and a spur gear. The nut assembly 1142 is sleeved on the lead screw 1141 and threadedly engaged with it. The lead screw 1141 is connected to the spur gear, and the nut assembly 1142 is connected to the push rod 1143. The spur gear can drive the lead screw 1141 to rotate, causing the nut assembly 1142 to drive the push rod 1143 to move along the axial direction of the lead screw 1141, so that the push rod 1143 generates lifting force.

[0051] The tilting motor 1131 can drive the lead screw 1141 to rotate. The lead screw 1141 cooperates with the nut assembly 1142, so that the nut assembly 1142 can move in the axial direction of the lead screw 1141. The nut assembly 1142 is used to drive the push rod 1143 to move in the axial direction of the lead screw 1141. The push rod 1143 drives the rotating bracket to tilt relative to the fixed bracket 111.

[0052] The nut assembly 1142 is connected to the rotating bracket 112, and the lifting motor can drive the rotating bracket to lift relative to the fixed bracket 111 via the lead screw and lead screw nut.

[0053] In one embodiment, such as Figures 1-2 , Figures 4-5 As shown, the spur gear includes a first spur gear 1144, a second spur gear 1145, and a third spur gear 1146. The first spur gear 1144 is connected to the drive mechanism 113. The first spur gear 1144 meshes with the second spur gear 1145. The second spur gear 1145 also meshes with the third spur gear 1146. The third spur gear 1146 is coaxially and fixedly connected to the lead screw 1141, thereby driving the lead screw 1141 to rotate.

[0054] The tilting motor 1131 can drive the first spur gear, the second spur gear and the third spur gear to rotate. The third spur gear drives the lead screw 1141 to rotate. The lead screw 1141 cooperates with the nut assembly 1142, so that the nut assembly 1142 can move in the axial direction of the lead screw 1141. The nut assembly 1142 is used to drive the push rod 1143 to move in the axial direction of the lead screw 1141. The push rod 1143 drives the rotating bracket to tilt relative to the fixed bracket 111.

[0055] In one embodiment, such as Figures 1-2 , Figures 4-5 As shown, the first spur gear 1144, the second spur gear 1145 and the third spur gear 1146 are arranged side by side, which allows the drive mechanism and transmission mechanism of the lifting device to be arranged more compactly.

[0056] In one embodiment, such as Figures 1-2 , Figures 4-5 As shown, the drive mechanism also includes a reduction gearbox 1132. The lifting motor 1131 is connected to the reduction gearbox 1132, and the reduction gearbox 1132 is connected to the spur gear to drive the spur gear to rotate. The reduction gearbox 1132 reduces the output torque of the lifting motor.

[0057] In one embodiment, such as Figures 1-2 , Figures 4-5 As shown, the transmission mechanism 114 and the drive mechanism 113 are arranged side by side, and the axis of the lifting motor 1131 is parallel to the axis of the lead screw 1141.

[0058] By arranging the transmission mechanism and the drive mechanism side by side, and with the axis of the lifting motor parallel to the axis of the lead screw, the layout of the lifting device can be made more compact.

[0059] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of a water propulsion device provided in an embodiment of the present utility model. The water propulsion device 101 is used to propel a water-mobile device to move in the water. The water propulsion device 101 includes a propeller, which is connected to a propulsion motor to drive the propeller to rotate through the propulsion motor.

[0060] The water propulsion device 101 includes a propulsion body 120 and a tilting device 110. The tilting device 110 is used to connect the propulsion body 120 to the water carrier. When the water mobile device is in normal operation, the water propulsion device 101 is in the lowered state, and the propeller is located in the water. When the water mobile device needs to stop, the water propulsion device 110 can be used to tilt the water propulsion device 101 to a predetermined position, so that the propeller of the water propulsion device 101 can be tilted out of the water, thus avoiding the propeller being submerged in water for a long time.

[0061] This application also provides a schematic diagram of the structure of a water-based mobile device, which may be, for example, a ship. The water-based mobile device includes a water-based carrier and a water-based thruster 101, which is connected to the water-based carrier.

[0062] It should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection. Furthermore, the directional terms mentioned in the embodiments of this application, such as "inner" and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. The above descriptions are merely specific implementations of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application.

[0063] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A lifting device, characterized in that, The lifting device includes a drive mechanism, a transmission mechanism, a rotating support, and an auxiliary structure; the drive mechanism includes a lifting motor. The transmission mechanism is connected to the tilting motor, and the rotating bracket is connected to the transmission mechanism. The tilting motor is used to drive the rotating bracket to tilt relative to the water carrier via the transmission mechanism; the rotating bracket is used to drive the water propulsion device to tilt relative to the water carrier. The auxiliary structure includes an auxiliary transmission assembly and a control component connected to the auxiliary transmission assembly. The auxiliary transmission assembly is connected to the transmission mechanism. The control component includes a control end located on the side of the lifting device. The side of the lifting device is parallel to the lifting direction of the water propulsion device. The control end is used to drive the rotating bracket to lift relative to the water carrier via the transmission mechanism when the lifting motor fails.

2. The lifting device according to claim 1, characterized in that, The transmission mechanism includes a lead screw and a nut assembly connecting the lead screw. The tilting motor is coaxially connected to the lead screw, the nut assembly is connected to the rotating bracket, and the auxiliary structure is connected to the lead screw.

3. The lifting device according to claim 2, characterized in that, It also includes a fixed bracket for connecting the water carrier, and a rotating bracket rotatably connected to the fixed bracket so that the rotating bracket can tilt relative to the fixed bracket.

4. The lifting device according to claim 3, characterized in that, The control element includes a rotating component connected to the auxiliary transmission assembly, and the control end is a cam disposed on the rotating component.

5. The lifting device according to claim 4, characterized in that, The auxiliary transmission assembly includes a gear set connected to the transmission mechanism, and the rotating component is connected to the gear set.

6. The lifting device according to claim 5, characterized in that, The gear set includes a first bevel gear and a second bevel gear. The rotating component is coaxially and fixedly connected to the first bevel gear. The first bevel gear meshes with the second bevel gear. The second bevel gear is coaxially and fixedly connected to the lead screw. The first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the lead screw to rotate. The rotation planes of the first bevel gear and the second bevel gear are different.

7. The lifting device according to claim 6, characterized in that, The rotating component is a connecting rod. The rotation planes of the first bevel gear and the second bevel gear are perpendicular. The first bevel gear is located on the side of the lead screw. The end of the first bevel gear near the lead screw meshes with the second bevel gear. The end of the first bevel gear away from the lead screw is coaxially and fixedly connected to the connecting rod. The cam of the connecting rod is located at the end of the connecting rod away from the first bevel gear.

8. The lifting device according to claim 3 or 4, characterized in that, The auxiliary transmission assembly includes a turbine and a worm gear. The control element is coaxially and fixedly connected to the worm gear. The control element is used to drive the worm gear to rotate, and the worm gear drives the turbine gear to rotate. The turbine gear is coaxially and fixedly connected to the transmission mechanism, and the turbine gear drives the transmission mechanism to rotate.

9. The lifting device according to any one of claims 2-7, characterized in that, The transmission mechanism and the drive mechanism are arranged side by side, and the axis of the lifting motor is parallel to the axis of the lead screw.

10. A water propulsion device, characterized in that, The propeller includes a propeller body and a lifting device according to any one of claims 1-9, wherein the propeller body is connected to the rotating support.

11. A water-based mobile device, characterized in that, The water-based mobile device includes a water-based carrier and a water-based thruster according to claim 10, wherein the water-based thruster is connected to the water-based carrier.

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