Lifting all-round propulsion device

Abstract

The utility model discloses a kind of lifting type full-rotation propelling devices, including full-rotation propeller, lifting mechanism and thrust frame, lifting mechanism is installed in the side of well box assembly, full-rotation propeller further include with the motor support box body of well box assembly sliding connection and with the bottom fixed connection of motor support box body lifting stand, thrust frame is set in the bottom of the outer periphery of lifting stand, thrust frame is used to cooperate with the well of ship body, lifting stand is set in the outer periphery of rudder stand and rudder stand is rotatably connected with lifting stand, lifting mechanism is used to drive lifting stand to move up and down relative to well box assembly.The utility model's lifting type full-rotation propelling device, can realize the lifting, rotation and propulsion three major functions of full-rotation propeller, and full electric drive, equipment integration degree is high, floor space is small, can satisfy the new system and reconstruction demand of various work boats, provide simple and efficient power demand for the work of ship in different water depth.

Description

Technical Field

[0001] This utility model belongs to the field of marine equipment technology, specifically relating to a lifting-type full-rotation propulsion device. Background Technology

[0002] Traditional rotary propulsion devices powered by the main motor are bolted to the ship's cofferdam via the well box flange and do not have lifting or lowering capabilities.

[0003] With the rapid development of the shipbuilding market, the requirements for complex waters and multi-functional working conditions are getting higher and higher. As a result, lifting and rotating propulsion devices have begun to appear. At present, most propulsion manufacturers at home and abroad use hydraulic cylinders to achieve the lifting function. However, this type of supporting product has the following disadvantages in previous applications: (1) The equipment layout size is large, which leads to a large space requirement; (2) An external hydraulic station system is required, and the control program is relatively complex; (3) The weight of the equipment is large and exceeds the design requirements of the hull; (4) The response speed is slow and there are many start-up checks. Utility Model Content

[0004] In view of this, in order to overcome the shortcomings of the prior art, this utility model provides a lifting and rotating propulsion device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A lifting-type azimuth propulsion device includes an azimuth thruster. The azimuth thruster includes a well housing assembly, a rudder propeller body, a rudder steering mechanism, and a propulsion motor. The rudder propeller body includes a rudder column, a propeller, and a lower gearbox. The rudder steering mechanism drives the rudder propeller body to rotate around the axis of the rudder column. The propulsion motor drives the propeller blades to rotate. The lifting-type azimuth propulsion device also includes a lifting mechanism and a thrust frame. The lifting mechanism is installed on one side of the well housing assembly. The azimuth thruster also includes a motor support housing slidably connected to the well housing assembly and a lifting column fixedly connected to the bottom of the motor support housing. The rudder steering mechanism is located on one side of the motor support housing. The thrust frame is sleeved on the bottom of the lifting column and is used to cooperate with the ship's cofferdam. The lifting column is sleeved on the outer periphery of the rudder column and the rudder column and the lifting column are rotatably connected. The lifting mechanism is used to drive the lifting column to move up and down relative to the well housing assembly.

[0006] According to some preferred embodiments of the present invention, the motor support housing includes a housing body, a guide assembly and a connecting rod disposed on the housing body, the housing body having a first through cavity inside, the bottom of the housing of the propulsion motor being fixedly connected to the top of the housing body, and the top of the lifting column being fixedly connected to the bottom of the housing body.

[0007] According to some preferred embodiments of this utility model, the guide assembly includes extension rods located on both sides of the housing body and rollers rotatably connected to the end of each extension rod away from the housing body. The length direction of the extension rods is perpendicular to the height direction of the well housing assembly. The well housing assembly includes a base and a vertical rod perpendicular to and fixedly connected to the top surface of the base. Each of the two sides of the vertical rod has a groove for accommodating the rollers, extending from the side closest to the housing body to the other side. The rollers can move up and down along the length direction of the grooves, and the outer periphery of the rollers contacts the edge of the grooves. The guide assembly serves to guide the lifting column when the lifting mechanism moves it up and down, maintaining its straightness, enabling more stable movement, and reducing unnecessary vibration.

[0008] According to some preferred embodiments of the present invention, at least one connecting rod is fixedly provided at both ends of the box body near the lifting mechanism, and two fixing rods are provided at the top of the upright corresponding to the two connecting rods, with the fixing rods located above the connecting rods.

[0009] According to some preferred embodiments of the present invention, the lifting mechanism includes a lifting driver, a first reducer connected to the lifting driver, couplings located on both sides of the first reducer, a steering gear connected to the end of each coupling away from the first reducer, and a lead screw connected to each steering gear. The top end of each lead screw is fixedly connected to one end of a corresponding fixed rod. The first reducer and the steering gear are both fixedly connected to the top surface of the base. The lead screw is perpendicular to the coupling, and a lead screw nut is provided on the lead screw. The lead screw is parallel to the upright and passes through the end of a connecting rod away from the housing body. The top of the lead screw nut is fixedly connected to one end of the connecting rod. The lifting driver is used to drive the lead screw to rotate.

[0010] According to some preferred embodiments of this utility model, the lifting column passes through the middle of the base, the length of the rudder column is greater than the length of the lifting column, the lifting column is parallel to the lead screw, the thrust frame is located below the base, the distance from the top surface of the thrust frame to the top surface of the lifting column is less than the length of the lead screw, the thrust frame includes two symmetrically arranged and fixedly connected push plates, one end of each push plate is in contact with one side of the outer periphery of the lifting column, and the other end of each push plate extends away from the lifting column and is fixedly provided with a mating block, the center lines of the two push plates coincide; grooves are formed from the inside to the outside on the two opposing side walls of the cofferdam, the length direction of the grooves is parallel to the length direction of the lifting column, each groove is used to accommodate a corresponding mating block and the outer wall of each mating block is in contact with the inner wall of the groove, the mating block can move up and down along the length direction of the groove. The thrust frame is used to transmit the thrust of the propeller to the hull, thereby realizing the power needs of the ship in different directions.

[0011] According to some preferred embodiments of this utility model, the azimuth thruster further includes a transmission assembly. A second through-cavity extending along the length of the rudder column is provided inside the rudder column. The upper end of the transmission assembly is located in the first through-cavity, and the remaining part of the transmission assembly is located in the second through-cavity. The transmission assembly includes an input shaft, a drive shaft, a first bushing, a first bearing, a bearing housing, an upper pressure cap, and a first sealing ring. The motor support housing further includes a fixing plate fixedly disposed inside the first through-cavity. The transmission assembly passes through the middle of the fixing plate, and the bearing housing is fixedly connected to the fixing plate. The first sealing ring serves a sealing function, ensuring that the lubricating oil inside the input shaft remains sealed during high-speed rotation and does not leak out.

[0012] According to some preferred embodiments of the present invention, the top end of the input shaft is fixedly connected to one end of the shaft of the propulsion motor, the bottom end of the input shaft is fixedly connected to the top end of the transmission shaft, the bottom end of the transmission shaft is fixedly connected to the top end of the shaft of the lower gearbox, the first bushing and the first bearing are both sleeved on the outer periphery of the upper end of the input shaft, the bottom surface of the first bushing is in contact with the top surface of the first bearing, the upper pressure cover and the first sealing ring are both sleeved on the outer periphery of the first bushing, the bottom surface of the upper pressure cover is in contact with the top surface of the first sealing ring, and the bearing seat is sleeved on the outer periphery of the upper pressure cover, the first sealing ring and the first bearing, and the top of the bearing seat is also fixedly connected to the upper pressure cover.

[0013] According to some preferred embodiments of the present invention, the steering mechanism includes a steering motor, a second reducer located below the steering motor, a worm fixedly connected to one end of the rotating shaft of the second reducer, and a worm wheel meshing with one end of the worm. One end of the housing of the second reducer is fixedly connected to one end of the housing body. The worm wheel is fixedly connected to the top end of the steering column and is sleeved on the outer periphery of the connection between the input shaft and the transmission shaft. The steering motor is used to drive the steering column to rotate.

[0014] According to some preferred embodiments of this utility model, the lower gearbox further includes a first bevel gear and a second bevel gear. The first bevel gear is fixedly connected to the bottom end of the rotating shaft of the lower gearbox, and the second bevel gear meshes with the first bevel gear and is fixedly connected to one end of the rotating shaft of the propeller. The propeller blades are driven to rotate at high speed by the driving action of the propulsion motor.

[0015] Compared with the prior art, the advantages of this utility model are as follows: The lifting-type azimuth propulsion device of this utility model, through the setting of a lifting mechanism and thrust frame that cooperate with the azimuth propeller, can realize the three major functions of lifting, rotating, and propulsing of the azimuth propeller. Furthermore, it is fully electrically driven, and the entire device has a high degree of integration, effectively reducing the footprint. In addition, the control logic of the lifting mechanism of this utility model is simple, and the lifting action responds quickly, completing all start-up checks within minutes. The lifting-type azimuth propulsion device of this utility model can meet the needs of new construction and modification of various existing workboats, providing simple and efficient power for vessels operating at different water depths. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0017] Figure 1 This is a three-dimensional structural diagram of the lifting full-rotation propulsion device in a preferred embodiment of the present utility model; Figure 2 This is a schematic diagram of the main structure of the lifting full-rotation propulsion device in a preferred embodiment of the present invention; Figure 3 This is a side view of the lifting full-rotation propulsion device in a preferred embodiment of the present invention. Figure 4 for Figure 3 A partial sectional view of the structure; Figure 5 for Figure 4 A partial cross-sectional view of the transmission assembly; The attached figures are labeled as follows: Azimuth thruster-1, base-111, receiving slot-C1, guide seat-112, upright-113, slide-C2, fixing rod-114, rudder column-121, second cavity-Q2, propeller-122, lower gearbox-123, first bevel gear-1231, second bevel gear-1232, guide pipe-124, rudder motor-131, second reducer-132, worm gear-133, worm wheel-134, propulsion motor-14, housing body-151, first cavity-Q1, extension rod-152, roller-153, connecting rod-154, fixing plate-155, lifting column-1 6. Third passage cavity - Q3, input shaft - 171, transmission shaft - 172, first bushing - 173, first bearing - 174, bearing seat - 175, upper pressure cover - 176, first sealing ring - 177, second sealing ring - 178, second bushing - 181, second bearing - 182, third bushing - 191, third bearing - 192, third sealing ring - 193, bottom cover - 194, lifting mechanism - 2, lifting drive - 21, first reducer - 22, coupling - 23, steering gear - 24, lead screw - 25, lead screw nut - 26, handwheel - 27, thrust frame - 3, push plate - 31, mating block - 32. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0019] like Figures 1 to 5 As shown, the lifting-type azimuth propulsion device in this embodiment includes an azimuth thruster 1, a lifting mechanism 2, and a thrust frame 3. The azimuth thruster 1 includes a well housing assembly, a rudder propeller body, a rudder steering mechanism, a propulsion motor 14, a transmission assembly, a motor support housing slidably connected to the well housing assembly, and a lifting column 16 fixedly connected to the bottom of the motor support housing. The lifting mechanism 2 is installed on one side of the well housing assembly, and the rudder steering mechanism is located on one side of the motor support housing. The lifting-type azimuth propulsion device in this embodiment can realize the lifting, azimuth rotation, and propulsion of the azimuth thruster 1, meeting the needs of new construction and modification of various existing workboats, and providing simple and efficient power for vessels operating at different water depths.

[0020] Furthermore, such as Figures 1 to 4As shown, the motor support housing includes a housing body 151, a fixing plate 155, a guide assembly and a connecting rod 154 disposed on the housing body 151. The housing body 151 has a first through cavity Q1 inside. The fixing plate 155 is located inside the first through cavity Q1 and is fixedly connected to the inner wall of the housing body 151. The bottom of the housing of the propulsion motor 14 is fixedly connected to the top of the housing body 151. The guide assembly includes extension rods 152 located on both sides of the housing body 151 and rollers 153 rotatably connected to the end of each extension rod 152 away from the housing body 151. The length direction of the extension rods 152 is perpendicular to the height direction of the well box assembly. In this embodiment, a connecting rod 154 is fixedly disposed at both ends of the housing body 151 near the lifting mechanism 2.

[0021] The well box assembly includes a base 111 and a vertical rod 113 that is perpendicular to and fixedly connected to the top surface of the base 111. Two fixing rods 114 are provided on the top of the vertical rod 113 corresponding to two connecting rods 154, and the fixing rods 114 are located above the connecting rods 154. The motor support housing, propulsion motor 14, and steering mechanism are all located between the two vertical rods 113. A receiving groove C1 is formed on the top surface of the base 111, and a cylindrical guide seat 112 is fixedly installed in the middle of the receiving groove C1. The depth of the receiving groove C1 is less than the height of the base 111. Each of the two sides of the vertical rod 113 has a sliding groove C2 formed from the side closest to the housing body 151 to the other side to accommodate a roller 153. The roller 153 can move up and down along the length of the sliding groove C2. The outer periphery of the roller 153 contacts the edge of the sliding groove C2 to ensure that the sliding groove C2 has a greater guiding effect than the roller 153 during movement.

[0022] The propeller body includes a rudder column 121, a propeller 122, a guide tube 124, and a lower gearbox 123. The rudder column 121 has a second through cavity Q2 extending along its length. The bottom of the rudder column 121 is fixedly connected to the top of the lower gearbox 123. The guide tube 124 covers the outside of the propeller blades of the propeller 122, and the top surface of the guide tube 124 is fixedly connected to the bottom of the rudder column 121, while the bottom of the guide tube 124 is fixedly connected to the bottom of the lower gearbox 123. The lower gearbox 123 has a first bevel gear 1231 and a second bevel gear 1232 inside. The first bevel gear 1231 is fixedly connected to the bottom end of the shaft of the lower gearbox 123, and the second bevel gear 1232 meshes with the first bevel gear 1231 and is fixedly connected to one end of the shaft of the propeller 122.

[0023] The steering mechanism includes a steering motor 131, a second reducer 132 located below the steering motor 131, a worm 133 fixedly connected to one end of the shaft of the second reducer 132, and a worm wheel 134 meshing with one end of the worm 133. One end of the shaft of the steering motor 131 is fixedly connected to one end of the second reducer 132. In this embodiment, the second reducer 132 is a right-angle reducer. One end of the housing of the second reducer 132 is fixedly connected to one end of the housing of the steering motor 131. One end of the housing of the second reducer 132 is fixedly connected to one end of the housing body 151. The worm wheel 134 is fixedly connected to the top of the steering column 121. The steering motor 131 is used to drive the steering column 121 to rotate, thereby driving the lower gearbox 123, propeller 122, and guide pipe 124 to rotate 360° around the axis of the steering column 121.

[0024] Furthermore, the top of the lifting column 16 is fixedly connected to the bottom of the housing body 151, the length of the steering column 121 is greater than the length of the lifting column 16, the lifting column 16 passes through the middle of the guide seat 112 and the outer wall of the lifting column 16 is in contact with the inner wall of the guide seat 112, and the outer diameter of the top of the lifting column 16 is smaller than the outer diameter of the guide seat 112 and larger than the inner diameter of the guide seat 112. The lifting column 16 has a third through cavity Q3 extending along its length. The lifting column 16 is sleeved on the outer periphery of the steering column 121. A second bushing 181 and a second bearing 182 are provided between the outer wall of the top of the steering column 121 and the inner wall of the top of the lifting column 16. The second bushing 181 is located above the second bearing 182, and the outer wall of the top of the second bushing 181 is also in contact with the inner wall of the bottom of the turbine. In addition, a third bushing 191 and a third bearing 192 are provided between the outer wall of the bottom of the steering column 121 and the inner wall of the bottom of the lifting column 16. The third bushing 191 is located below the third bearing 192. The arrangement of these bushings and bearings allows the steering column 121 to rotate relative to the lifting column 16. In this embodiment, a third sealing ring 193 and a bottom cover 194 are also fitted between the outer wall of the third bushing 191 and the inner wall of the bottom of the lifting column 16. The third sealing ring 193 is located above the bottom cover 194, and the bottom surface of the bottom cover 194 is flush with the bottom surface of the lifting column 16. The third sealing ring 193 fills the gap between the bottom cover 194 and the third bearing 192. This arrangement can ensure the sealing between the lifting column 16 and the steering column 121.

[0025] The thrust frame 3 is located below the base 111 and is fitted around the bottom of the lifting column 16 for engagement with the ship's cofferdam (not shown). The thrust frame 3 can move as the lifting column 16 moves. Specifically, the thrust frame 3 includes two symmetrically arranged and fixedly connected push plates 31. One end of each push plate 31 is attached to one side of the outer periphery of the lifting column 16, and the ends of the two push plates 31 that are close to each other are fixedly connected to surround the outer periphery of the lifting column 16. The other end of each push plate 31 extends away from the lifting column 16 and is fixedly provided with a mating block 32. The axis lines of the two push plates 31 coincide, and a portion of the orthographic projection of the thrust frame 3 on the bottom surface of the base 111 is located within the range of the bottom surface of the base 111. Furthermore, grooves are formed on both opposing sidewalls of the cofferdam from the inside out. The length of the grooves is parallel to the length of the lifting column 16. Each groove accommodates a corresponding mating block 32, and the outer wall of each mating block 32 fits against the inner wall of the groove. The mating block 32 can move up and down along the length of the groove. Through the cooperation between the thrust frame 3 and the cofferdam, the thrust of the propeller 122 can be transmitted to the hull, thereby meeting the power requirements of the ship in different directions.

[0026] Furthermore, the propulsion motor 14 is connected to the shaft of the lower gearbox 123 via a transmission assembly, such as... Figure 4 and Figure 5 As shown, the transmission assembly passes through the middle of the fixed plate 155, with its upper end located in the first through cavity Q1 and the remaining part located in the second through cavity Q2. Specifically, the transmission assembly includes an input shaft 171, a transmission shaft 172, a first bushing 173, a first bearing 174, a bearing housing 175, an upper pressure cover 176, a first sealing ring 177, and a second sealing ring 178. The top end of the input shaft 171 is fixedly connected to one end of the shaft of the propulsion motor 14, and the bottom end of the input shaft 171 is fixedly connected to the top end of the transmission shaft 172. The worm gear 134 is sleeved on the outer periphery of the connection between the input shaft 171 and the transmission shaft 172. The bottom end of the transmission shaft 172 is fixedly connected to the top end of the shaft of the lower gearbox 123. The rotation of the shaft of the propulsion motor 14 drives the rotation of the input shaft 171 and the transmission shaft 172, which in turn drives the shaft of the lower gearbox 123 to rotate. Then, through the transmission action of the first bevel gear 1231 and the second bevel gear 1232, the shaft of the propeller 122 is driven to rotate, which finally drives the blade of the propeller 122 to rotate at high speed.

[0027] Specifically, the first bushing 173 and the first bearing 174 are both sleeved on the outer periphery of the upper end of the input shaft 171 to ensure the stability of the rotation of the input shaft 171. The bottom surface of the first bushing 173 is in contact with the top surface of the first bearing 174. The upper cover 176 and the first sealing ring 177 are both sleeved on the outer periphery of the first bushing 173. The bottom surface of the upper cover 176 is in contact with the top surface of the first sealing ring 177. The first sealing ring 177 can ensure that the lubricating oil inside the input shaft 171 is sealed during high-speed rotation and will not leak out. A bearing housing 175 is fitted around the outer periphery of the upper pressure cover 176, the first sealing ring 177, and the first bearing 174. The inner wall of the middle portion of the bearing housing 175 is in contact with the outer wall of the first bushing 173 located between the first sealing ring 177 and the first bearing 174. The top portion of the bearing housing 175 near the upper pressure cover 176 is fixedly connected to the top of the upper pressure cover 176, and the top portion of the bearing housing 175 away from the upper pressure cover 176 is fixedly connected to the fixing plate 155 to support the entire transmission assembly. In addition, a second sealing ring 178 is fitted around the outer periphery of the top of the first bushing 173. The bottom surface of the second sealing ring 178 is in contact with the top surface of the upper pressure cover 176, and the second sealing ring 178 serves as a dustproof seal.

[0028] Furthermore, the lifting mechanism 2 is used to drive the lifting column 16 to move up and down relative to the well box assembly, such as... Figures 1 to 3 As shown, the lifting mechanism 2 includes a lifting drive 21, a first reducer 22 connected to the lifting drive 21, couplings 23 located on both sides of the first reducer 22, a steering gear 24 connected to the end of each coupling 23 away from the first reducer 22, and a lead screw 25 connected to each steering gear 24. The top end of each lead screw 25 is fixedly connected to one end of a corresponding fixed rod 114. Each lead screw 25 is provided with a lead screw nut 26. The lead screw 25 is perpendicular to the coupling 23 and parallel to the lifting column 16 and the upright 113. In this embodiment, the first reducer 22 and the steering gear 24 are both fixedly connected to the top surface of the base 111. A lead screw 25 passes through the end of a corresponding connecting rod 154 away from the housing body 151. The top of the lead screw nut 26 is fixedly connected to one end of the connecting rod 154. In this embodiment, the lifting drive 21 is preferably a motor. The lifting drive 21 drives the two couplings 23 to rotate simultaneously, and further drives the two lead screws 25 to rotate simultaneously through the steering gear 24. Since the lead screw 25 is restricted between the fixed rod 114 and the steering gear 24, when the lead screw 25 rotates in its original position, it drives the lead screw nut 26 to rotate upward or downward, thereby driving the connecting rod 154 to move, and finally driving the entire motor support housing to move, thereby realizing the movement of other components in the full-rotation thruster 1 except for the well box assembly and the thrust frame 3. In order to ensure the effective distance of the movement of the lifting column 16, the length of the lead screw 25 is set to be greater than the distance from the top surface of the thrust frame 3 to the top surface of the lifting column 16.

[0029] In addition, in this embodiment, a handwheel 27 is provided on the outside of each steering gear 24. The handwheel 27 is fixedly connected to the end of the coupling 23 away from the first reducer 22 through the steering gear 24, so as to ensure that in the event of an electrical fault, the handwheel 27 can be manually rotated to drive the lead screw 25 to rotate, thereby realizing the lifting function.

[0030] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting-type azimuth propulsion device, comprising a azimuth thruster, the azimuth thruster comprising a well housing assembly, a rudder propeller body, a rudder steering mechanism, and a propulsion motor, the rudder propeller body comprising a rudder column, a propeller, and a lower gearbox, the rudder steering mechanism being used to drive the rudder propeller body to rotate about the axis of the rudder column, and the propulsion motor being used to drive the propeller blades to rotate, characterized in that, The lifting-type azimuth propulsion device further includes a lifting mechanism and a thrust frame. The lifting mechanism is installed on one side of the well box assembly. The azimuth propulsion device also includes a motor support box that is slidably connected to the well box assembly and a lifting column that is fixedly connected to the bottom of the motor support box. The steering mechanism is located on one side of the motor support box. The thrust frame is sleeved on the bottom of the outer periphery of the lifting column. The thrust frame is used to cooperate with the cofferdam of the hull. The lifting column is sleeved on the outer periphery of the steering column and the steering column and the lifting column are rotatably connected. The lifting mechanism is used to drive the lifting column to move up and down relative to the well box assembly.

2. The lifting-type full-rotation propulsion device according to claim 1, characterized in that, The motor support housing includes a housing body, a guide assembly and a connecting rod disposed on the housing body, the housing body having a first through cavity inside, the bottom of the housing of the propulsion motor being fixedly connected to the top of the housing body, and the top of the lifting column being fixedly connected to the bottom of the housing body.

3. The lifting-type full-rotation propulsion device according to claim 2, characterized in that, The guide assembly includes extension rods located on both sides of the housing body and rollers rotatably connected to the end of each extension rod away from the housing body. The length direction of the extension rods is perpendicular to the height direction of the well housing assembly. The well housing assembly includes a base and a vertical rod that is perpendicular to and fixedly connected to the top surface of the base. Both sides of the vertical rod are provided with grooves for accommodating the rollers from one side closer to the housing body to the other side. The rollers can move up and down along the length direction of the grooves, and the outer periphery of the rollers contacts the edge of the grooves.

4. The lifting-type full-rotation propulsion device according to claim 3, characterized in that, At least one connecting rod is fixedly installed at both ends of the box body near the lifting mechanism. Two fixing rods are installed at the top of the upright corresponding to the two connecting rods, and the fixing rods are located above the connecting rods.

5. The lifting-type full-rotation propulsion device according to claim 4, characterized in that, The lifting mechanism includes a lifting driver, a first reducer connected to the lifting driver, couplings located on both sides of the first reducer, a steering gear connected to the end of each coupling away from the first reducer, and a lead screw connected to each steering gear. The top end of each lead screw is fixedly connected to one end of a corresponding fixed rod. The first reducer and the steering gear are both fixedly connected to the top surface of the base. The lead screw is perpendicular to the coupling, and a lead screw nut is provided on the lead screw. The lead screw is parallel to the upright and passes through the end of a connecting rod away from the housing body. The top of the lead screw nut is fixedly connected to one end of the connecting rod. The lifting driver is used to drive the lead screw to rotate.

6. The lifting-type full-rotation propulsion device according to claim 5, characterized in that, The lifting column passes through the middle of the base. The length of the steering column is greater than the length of the lifting column. The lifting column is parallel to the lead screw. The thrust frame is located below the base. The distance from the top surface of the thrust frame to the top surface of the lifting column is less than the length of the lead screw. The thrust frame includes two symmetrically arranged and fixedly connected push plates. One end of each push plate is in contact with one side of the outer perimeter of the lifting column. The other end of each push plate extends away from the lifting column and is fixedly provided with a mating block. The center lines of the two push plates coincide. Grooves are formed from the inside to the outside on the two opposing side walls of the well. The length direction of the groove is parallel to the length direction of the lifting column. Each groove is used to accommodate a corresponding mating block, and the outer wall of each mating block is in contact with the inner wall of the groove. The mating block can move up and down along the length direction of the groove.

7. The lifting-type full-rotation propulsion device according to claim 2, characterized in that, The azimuth thruster also includes a transmission assembly. The rudder column has a second cavity extending through its length. The upper end of the transmission assembly is located in the first cavity, and the remaining part of the transmission assembly is located in the second cavity. The transmission assembly includes an input shaft, a drive shaft, a first bushing, a first bearing, a bearing housing, an upper pressure cover, and a first sealing ring. The motor support housing also includes a fixed plate fixedly disposed inside the first cavity. The transmission assembly passes through the middle of the fixed plate, and the bearing housing is fixedly connected to the fixed plate.

8. The lifting-type full-rotation propulsion device according to claim 7, characterized in that, The top end of the input shaft is fixedly connected to one end of the shaft of the propulsion motor, the bottom end of the input shaft is fixedly connected to the top end of the transmission shaft, the bottom end of the transmission shaft is fixedly connected to the top end of the shaft of the lower gearbox, the first bushing and the first bearing are both sleeved on the outer periphery of the upper end of the input shaft, the bottom surface of the first bushing is in contact with the top surface of the first bearing, the upper pressure cover and the first sealing ring are both sleeved on the outer periphery of the first bushing, the bottom surface of the upper pressure cover is in contact with the top surface of the first sealing ring, and the bearing seat is sleeved on the outer periphery of the upper pressure cover, the first sealing ring and the first bearing, and the top of the bearing seat is also fixedly connected to the upper pressure cover.

9. The lifting-type full-rotation propulsion device according to claim 8, characterized in that, The steering mechanism includes a steering motor, a second reducer located below the steering motor, a worm gear fixedly connected to one end of the shaft of the second reducer, and a worm wheel meshing with one end of the worm gear. One end of the housing of the second reducer is fixedly connected to one end of the housing body. The worm wheel is fixedly connected to the top of the steering column and is sleeved on the outer periphery of the connection between the input shaft and the transmission shaft. The steering motor is used to drive the steering column to rotate.

10. The lifting-type full-rotation propulsion device according to claim 8, characterized in that, The lower gearbox also includes a first bevel gear and a second bevel gear. The first bevel gear is fixedly connected to the bottom end of the shaft of the lower gearbox, and the second bevel gear meshes with the first bevel gear and is fixedly connected to one end of the shaft of the propeller.

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