Pull-wire displacement sensor for semi-submerged propeller-propelled ship and semi-submerged propeller ship

Abstract

The present application relates to a wire-pull displacement sensor for a semi-submerged propeller-propelled ship. The wire-pull displacement sensor comprises: a housing, including a winding shaft; a detection element, arranged in the housing, and the detection element is connected to the winding shaft; a steel wire rope, one end of which is used to pass through the housing and connect to the winding shaft, and the other end is used to connect to the part to be detected; a flexible part, which is sleeved outside the steel wire rope, and the steel wire rope protrudes out of the opposite ends of the flexible part; a positioning part, which is sleeved outside the steel wire rope and connected between the housing and the flexible part to install the flexible part to the housing; a sealing tube, which is arranged between the positioning part and the steel wire rope, and the sealing tube and the steel wire rope are interference-fitted. By arranging a sealing tube between the positioning part and the steel wire rope, and making the sealing tube and the steel wire rope interference-fitted, the waterproof sealing effect of the wire-pull displacement sensor can be effectively improved, and water can be effectively prevented from entering the sensor from the gap between the steel wire rope and the flexible shaft to damage the electronic components, thereby increasing the service life of the wire-pull sensor and reducing the use cost of the wire-pull sensor.

Description

Technical Field

[0001] The present application relates to the technical field of semi-submerged propeller-propelled ships, and in particular to a pull-wire displacement sensor for semi-submerged propeller-propelled ships and a semi-submerged propeller-propelled ship. Background Art

[0002] With the development of semi-submerged propeller propulsion technology, the requirements for the control accuracy of the direction and trim depth of semi-submerged propeller ships are getting higher and higher. The cable displacement sensor is gradually applied to semi-submerged propeller propulsion ships to detect the rotation angle of the steering mechanism and trim mechanism of the propulsion device, so as to accurately control the navigation parameters of the ship. During operation, the housing of the cable displacement sensor is generally installed inside the hull, and the cable is connected to the part to be detected in the external water body. When the cable moves in the water with the part to be detected, water will enter the sensor box through the gap between the cable and the flexible shaft, thereby causing damage to the electronic components inside the housing, reducing the service life of the cable sensor, and increasing the use cost of the cable sensor. Summary of the invention

[0003] Based on this, it is necessary to provide a draw-wire displacement sensor and a semi-submerged propeller ship for a semi-submerged propeller ship to address the problem that when the draw-wire displacement sensor technology is applied to a semi-submerged propeller ship, water will enter the sensor box through the gap between the draw-wire and the flexible shaft.

[0004] One aspect of the present invention provides a pull-wire displacement sensor for a semi-submerged propeller-propelled ship, comprising: a shell, a winding shaft, a detection element, a flexible member, a positioning member and a sealing tube; the winding shaft is arranged in the shell; the detection element is connected to the winding shaft; the flexible member is sleeved outside the steel wire rope, and the steel wire rope protrudes out of the opposite ends of the flexible member; the positioning member is sleeved outside the steel wire rope and connected between the shell and the flexible member to install the flexible member to the shell; the sealing tube is arranged between the positioning member and the steel wire rope, and the sealing tube and the steel wire rope have an interference fit.

[0005] In one embodiment, the sealing tube includes a circular ring-shaped body and a plurality of annular sealing portions arranged on the inner circumference of the body, the plurality of sealing portions are arranged at intervals in a direction parallel to the central axis of the body, and the sealing portions are interference fit with the steel wire rope.

[0006] In one embodiment, the sealing portion is an axisymmetric structure.

[0007] In one embodiment, the minimum diameters of any two sealing portions are different.

[0008] In one of the embodiments, in a direction parallel to the central axis of the main body and gradually approaching the shell, the minimum diameters of the plurality of sealing portions gradually decrease.

[0009] In one of the embodiments, the positioning member is sleeved on the outside of the flexible member, and the positioning member, the flexible member, the steel wire rope and the shell are surrounded to form a containing space, and the sealing tube is arranged in the containing space.

[0010] In one of the embodiments, the pull-wire displacement sensor further includes a watertight plate, which is sleeved on the outer periphery of the flexible member, and the watertight plate and the flexible member are sealed and connected.

[0011] In one embodiment, the flexible member includes a flexible shaft and a first end and a second end connected at both ends of the flexible shaft, the second end is closer to the shell than the first end, the positioning member is connected between the second end and the shell, the watertight plate is arranged between the first end and the second end, and the first end is connected to a fixing member arranged in the water.

[0012] In one embodiment, the wire displacement sensor also includes a detection module, which includes a detection member and a prompt member. The detection member is sleeved on the outer periphery of the wire rope. In a direction parallel to the central axis of the main body, the detection member is closer to the shell than at least one sealing portion. The prompt member is arranged outside the shell. The detection member is a moisture meter. When the moisture value detected by the detection member is greater than a preset value, the prompt member will issue a prompt message perceptible to humans.

[0013] Another aspect of the present invention provides a semi-submerged propeller propelled ship, including a hull, a propulsion device 300 and a wire displacement sensor mentioned in any of the above embodiments, the shell is arranged in the hull, the hull includes a stern plate, the propulsion device is located outside the hull and connected to the stern plate, the propulsion device includes a steering mechanism and a trim mechanism, and one end of the wire rope is connected to the steering mechanism or the trim mechanism.

[0014] The wire-drawing displacement sensor according to one embodiment of the present invention can effectively improve the waterproof sealing effect of the wire-drawing displacement sensor by disposing a sealing tube between the positioning piece and the steel wire rope and making the sealing tube and the steel wire rope have an interference fit. It can effectively prevent water from entering the sensor through the gap between the steel wire rope and the flexible shaft and damaging the electronic components, thereby increasing the service life of the wire-drawing displacement sensor and reducing the use cost of the wire-drawing sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of a wire displacement sensor in an embodiment of the present invention, wherein the wire displacement sensor is in an initial state.

[0016] Figure 2 The cross-sectional view is a view of a wire displacement sensor in an embodiment of the present invention with the housing, winding shaft and detection element removed, wherein the wire displacement sensor is in a working state.

[0017] Figure 3 for Figure 2A partial enlarged view of point A in the middle, in which the wire displacement sensor is not equipped with a detection module.

[0018] Figure 4 It is a cross-sectional view of a combination of a steel wire rope, a flexible shaft and a first end head of a wire displacement sensor in one embodiment of the present invention, wherein the wire displacement sensor is in an initial state.

[0019] Figure 5 for Figure 2 A partial enlarged view of point A in the middle, in which the wire displacement sensor is provided with a detection module.

[0020] Figure 6 Schematic diagram of the combination of a draw-wire displacement sensor and a propulsion device 300 for a semi-submerged propeller-propelled ship according to an embodiment of the present invention.

[0021] Figure 7 for Figure 6 A partial enlarged view of point B in the middle.

[0022] Description of Figure Numbers:

[0023] 100, wire displacement sensor; 1, wire rope; 12, wire rope end; 13, end lock; 131, first mounting hole; 2, flexible member; 21, flexible shaft; 22, first end; 23, second end; 3, positioning member; 4, sealing tube; 41, body; 42, sealing part; 5, shell; 51, second mounting hole; 6, watertight plate; 61, sealing member; 7, winding shaft; 8, detection element; 9, detection member; 200, stern plate; 300, propulsion device; 3100, drive assembly; 3 110. First drive assembly; 3120. Prime mover; 3130. Transmission unit; 3140. Drive member; 3150. Second drive assembly; 3160. First axis; 3200. Propulsion assembly; 3210. First propulsion assembly; 3220. Second propulsion assembly; 3230. Second axis; 3211. Propeller; 3212. Connecting seat; 3300. Adjustment assembly; 3310. Trim mechanism; 3320. Steering mechanism; 3330. Coupling rod; 3400. Control assembly. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] The following is a detailed description of the pull-wire displacement sensor for a semi-submerged propeller-propelled ship provided by the present application in conjunction with the accompanying drawings.

[0026] refer to Figure 1 A pull-wire displacement sensor 100 for a semi-submerged propeller-propelled ship provided in one embodiment of the present application includes: a housing 5, a winding shaft 7, a detection element 8, a steel wire rope 1, a flexible member 2, a positioning member 3 and a sealing tube 4. Specifically, the winding shaft 7 and the detection element 8 are arranged in the housing 5, and the detection element 8 is connected to the winding shaft 7. One end of the steel wire rope 1 is used to pass through the housing 5 and be wound and connected to the winding shaft 7, and the other end is used to be connected to the part to be detected. The flexible member 2 is sleeved on the outside of the steel wire rope 1, and the steel wire rope 1 protrudes out of the opposite ends of the flexible member 2. The positioning member 3 is sleeved on the outside of the steel wire rope 1 and is connected between the housing 5 and the flexible member 2 to install the flexible member 2 to the housing 5. The sealing tube 4 is arranged between the positioning member 3 and the steel wire rope 1, and the sealing tube 4 is interference fit with the steel wire rope 1.

[0027] The wire-pull displacement sensor uses a highly flexible composite steel wire to measure displacement. The steel wire is wound on the winding shaft 7 through a spring, thereby converting the linear displacement of the steel wire rope 1 into the angular displacement of the winding shaft 7. The winding shaft 7 is directly connected to a detection element 8, and the angular displacement of the winding shaft 7 is detected by the detection element 8. Specifically, the detection element 8 is a rotary encoder, also called an angular displacement sensor, which is used to measure the angular displacement of the winding shaft 7. The linear displacement of the required part to be detected can be calculated by combining the angular displacement of the winding shaft 7 with the circumference of the winding shaft 7.

[0028] By arranging a sealing tube 4 between the positioning member 3 and the steel wire rope 1 and making the sealing tube 4 and the steel wire rope 1 have an interference fit, the waterproof sealing effect of the pull-wire displacement sensor 100 can be effectively improved, and water can be effectively prevented from entering the sensor from the gap between the steel wire rope 1 and the flexible member 2 and damaging the electronic components, thereby increasing the service life of the pull-wire sensor and reducing the use cost of the pull-wire sensor.

[0029] In one embodiment, reference Figure 2 and Figure 3 The sealing tube 4 includes a circular main body 41 and a plurality of annular sealing parts 42 arranged on the inner circumference of the main body 41. In a direction parallel to the central axis of the main body 41, the plurality of sealing parts 42 are arranged at intervals, and the sealing parts 42 are interference fit with the steel wire rope 1. By arranging a plurality of annular sealing parts 42 in the main body 41 and making the sealing parts 42 interference fit with the steel wire rope 1, a sealing surface can be formed between the sealing parts 42 and the steel wire rope 1 to prevent water from penetrating into the sensor shell through the gap. And when the steel wire rope 1 moves with the part to be detected, the plurality of sealing parts 42 can form a multi-layer scraping effect on the water attached to the surface of the steel wire rope 1 under the movement of the steel wire rope 1. If one of the sealing parts 42 fails, the other sealing parts 42 can still work normally, which can achieve multiple sealing effects and better waterproof sealing effect.

[0030] In one embodiment, reference Figure 2 and Figure 3 The sealing portion 42 is an axisymmetric structure. By setting the sealing portion 42 as an axisymmetric structure, the processing technology of the sealing tube 4 can be simplified and the processing cost can be reduced.

[0031] In one embodiment, reference Figure 2 and Figure 3 , the minimum inner diameters of any two sealing parts 42 are different. The outer surface of the steel wire rope 1 will be worn and irregular in shape during long-term operation. By changing the minimum inner diameter of the sealing part 42, the minimum inner diameters of any two sealing parts 42 are different, which can match the irregular outer surface of the steel wire rope 1 during operation, ensuring that the sealing part 42 and the steel wire rope 1 are closely matched, so that a sealing surface is formed between the sealing part 42 and the steel wire rope 1 to prevent the generation of a gap.

[0032] In one embodiment, reference Figure 2 and Figure 3 , in a direction parallel to the central axis of the body 41 and gradually approaching the housing 5, the minimum inner diameters of the plurality of sealing parts 42 gradually decrease. The closer to one end of the housing 5, the smaller the minimum inner diameter of each sealing part 42, the tighter the interference fit between the sealing part 42 and the steel wire rope 1, the greater the scraping force on the water attached to the steel wire rope 1, and the waterproof sealing effect can be effectively improved.

[0033] In one embodiment, reference Figure 2 and Figure 3 , the positioning member 3 is sleeved on the outside of the flexible member 2, the positioning member 3, the flexible member 2, the wire rope 1 and the housing 5 are surrounded by a receiving space, and the sealing tube 4 is arranged in the receiving space. Specifically, in this embodiment, the positioning member 3 is sleeved on the outside of the flexible member 2, and the positioning member 3 is connected to the flexible member 2 by a thread. By enclosing a receiving space and arranging the sealing tube 4 in the receiving space, the waterproof sealing effect of the sealing tube 4 can be improved to prevent water from penetrating into the housing 5.

[0034] In one embodiment, reference Figure 1 and Figure 2, the pull-wire displacement sensor 100 also includes a watertight plate 6, which is sleeved on the outer periphery of the flexible member 2, and the watertight plate 6 is sealed and connected to the flexible member 2. By setting the watertight plate 6, when actually used, the assembled flexible member 2 is placed in the water through the watertight plate 6, and the watertight plate 6 can separate the pull-wire displacement sensor 100 from the external water body. One end of the wire rope 1 is connected to the part to be detected, and the movement of the part to be detected in the water drives the wire rope 1 to move, and the wire rope 1 drives the winding shaft 7 to rotate. The sealed connection between the watertight plate 6 and the flexible member 2 can prevent water from penetrating into the watertight plate 6 from the gap between the watertight plate 6 and the flexible member 2. Specifically, in this embodiment, a sealing member 61 is provided between the watertight plate 6 and the flexible member 2, and the watertight plate 6 and the flexible member 2 are sealed by the sealing member 61. The sealing member can be a sealing ring, a sealant or other filler.

[0035] In one embodiment, reference Figure 1 , Figure 2 and Figure 4 The flexible member 2 includes a flexible shaft 21 and a first end 22 and a second end 23 connected at both ends of the flexible shaft 21. The second end 23 is closer to the housing 5 than the first end 22, and the positioning member 3 is connected between the second end 23 and the housing 5. Specifically, in this embodiment, the second end 23 and the flexible shaft 21 are an integrated structure, the positioning member 3 is sleeved on the outside of the second end 23, and the positioning member 3 is connected to the second end 23 by a thread. By setting the second end 23, the flexible shaft 21 can be connected to the positioning member 3.

[0036] In one embodiment, reference Figure 1 , Figure 2 and Figure 4 The watertight plate is arranged between the first end 22 and the second end 23, and the first end 22 is connected to a fixing member arranged in the water. Specifically, in this embodiment, the first end 22 and the flexible shaft 21 are an integrated structure, and the first end 22 is connected to the fixing member arranged in the water by a thread. By connecting the first end 22 to the fixing member, when the steel wire rope 1 and the object to be detected move together, the first end 22 can remain fixed in the water, which is conducive to reducing measurement errors.

[0037] In one embodiment, reference Figure 1 , Figure 2 and Figure 4, a wire rope end 12 is also provided on one end of the wire rope 1 connected to the part to be detected, the wire rope end 12 and the wire rope 1 are an integrated structure, the wire rope end 12 is connected to the end lock buckle 13, and the end lock buckle 13 is connected to the part to be detected. More specifically, in this embodiment, the wire rope end 12 and the end lock buckle 13 are connected by threads, and the end lock buckle 13 is provided with a mounting hole 131, and the end lock buckle 13 is connected to the part to be detected through the mounting hole 131. By providing the wire rope end 12 and the end lock buckle 13, the wire rope 1 can be more stably connected to the part to be detected, preventing the wire rope 1 from slipping off the part to be detected when working in water.

[0038] Specifically, refer to Figure 4 In the initial state, the steel wire rope 1 has not yet been connected to the object to be detected, and the steel wire rope end 12 and the first end 22 are in surface contact. Figure 2 In the working state, the end lock buckle 13 is connected to the part to be detected, the part to be detected drives the wire rope 1 to move, and the wire rope end 12 and the first end 22 are separated.

[0039] In one embodiment, a sealing member is provided between the first end 22 and the steel wire rope 1 to perform preliminary waterproof sealing work. The sealing member in this embodiment can be a sealing ring, a sealant or other fillers.

[0040] In one embodiment, the sealing tube 4 is made of rubber material, which can reduce the cost. In other embodiments, the sealing tube 4 can also be replaced by other materials such as engineering plastics, sealants, etc.

[0041] In one embodiment, the wire displacement sensor 100 further includes a detection module (not shown), the detection module includes a detection member 9 and a prompt member (not shown), the detection member 9 is sleeved on the outer periphery of the wire rope, in the direction parallel to the central axis of the body, the detection member 9 is closer to the housing 5 than at least one sealing portion 42, the prompt member is arranged outside the housing 5, the detection member 9 is a moisture meter, when the moisture value detected by the detection member 9 is greater than a preset value, the prompt member will issue a prompt message that can be perceived by humans. Specifically, if Figure 5 As shown, the detection member 9 can be set in the gap between adjacent sealing parts 42, or in the gap between the sealing part 42 and the positioning member 3. By setting the detection module, the waterproof sealing effect of the sealing tube 4 can be detected. When the detection member 9 detects that the amount of water attached to the steel wire rope 1 after the waterproof treatment of the sealing tube 4 exceeds the preset value, the detection member 9 will send a signal to the prompt member, and the prompt member will issue an alarm prompt to remind the staff that the waterproof seal of the sealing tube 4 has failed, so that the staff can handle it before the water penetrates into the shell 5 to prevent the water from penetrating into the shell 5 and damaging the electronic components. More specifically, the alarm prompt method of the prompt member can be an audible and visual alarm, a display alarm, or other alarm methods.

[0042] The present application also provides a semi-submerged propeller propelled ship, which includes a hull, a propulsion device 300 and a wire displacement sensor 100 mentioned in any of the above embodiments, the shell 5 is arranged in the hull, the hull includes a stern board 200, the propulsion device 300 is located outside the hull and connected to the stern board 200, the propulsion device 300 includes a trim mechanism 3310 and a steering mechanism 3320, and one end of the wire rope 1 is connected to the steering mechanism 3320 or the trim mechanism 3310.

[0043] refer to Figure 6 In one embodiment, the propulsion device 300 includes a driving assembly 3100, a propulsion assembly, an adjustment assembly 3300 and a control assembly 3400. The propulsion assembly is movably connected to the driving assembly 3100, and the driving assembly 3100 provides power for the propulsion assembly to move, and the propulsion assembly moves to drive the water transportation vehicle to move. Further, the driving assembly 3100 includes an output shaft (not shown in the figure) for outputting driving force, the output shaft rotates around the first axis 3160, and the propulsion assembly is connected to the output shaft and rotates around the second axis 3230 under the action of the output shaft. The two ends of the adjustment assembly 3300 are respectively movably connected to the propulsion assembly and the transom, and the adjustment assembly 3300 is used to adjust the action form of the propulsion assembly to adjust the movement speed, direction and other movement states of the water transportation vehicle. The control assembly 3400 is electrically connected to the driving assembly 3100 and the adjustment assembly 3300, and the control assembly 3400 controls the operation of the driving assembly 3100 and the adjustment assembly 3300 and makes them cooperate with each other so that the water transportation vehicle moves according to the required movement mode.

[0044] A semi-submerged propeller, or semi-submerged propeller in full, refers to a propeller that can still work normally even though at least part of its blades are above the water surface. Since the propeller shaft and other accessories are exposed to the water surface, the attached resistance of the semi-submerged propeller is greatly reduced. In addition, the diameter of the blade may not be restricted by other structures. Furthermore, when the blade is running in the water, the back pressure of the blade is reduced to form a suction surface. If the pressure at a certain point drops to the saturated vapor pressure of the water at that point, the steam and other gases escaping from the water will form bubbles that adhere to the surface of the blade, forming cavitation. Cavitation is the main cause of propeller surface erosion, vibration, noise, and performance deterioration. When the blades of a semi-submerged propeller alternately enter the water during operation, the cavitation generated will be replaced by the air cavity near the blade that is sucked in when the blade enters and exits the water, forming a "ventilated" state. Cavitation cannot be formed smoothly, thus avoiding the phenomenon of cavitation erosion on the blade surface, reducing the underwater vibration and noise of the blade, and increasing the service life of the blade.

[0045] Specifically, the drive assembly 3100 includes a prime mover 3120, a transmission unit 3130 and a drive member 3140. The prime mover 3120 is used to output driving force, and the prime mover 3120 can be a diesel engine, a gasoline engine, an electric motor, etc., which is not limited here. The transmission unit 3130 is connected to the prime mover 3120, and the transmission unit 3130 is used to adjust the drive output by the prime mover 3120 to the required range, for example: the speed, torque, and driving direction output by the prime mover 3120 are adjusted according to actual needs to meet the use requirements. The drive member 3140 is connected between the transmission unit 3130 and the propulsion assembly 3200, and is used to transmit the power output by the transmission unit 3130 to the propulsion assembly 3200, so that the propulsion assembly 3200 moves according to actual needs. The prime mover 3120, the transmission unit 3130 and the drive member 3140 are all connected in sequence along the first axis 3160. In this embodiment, the output end of the drive member 3140 is used as the output shaft of the drive assembly to flexibly connect one end of the propulsion assembly 3200.

[0046] refer to Figure 6 , the propulsion assembly 3200 is connected to the output shaft of the driving assembly 3100, and the propulsion assembly includes at least two first propulsion assemblies 3210 and second propulsion assemblies 3220 arranged in parallel. In the embodiment disclosed in the present application, the driving assembly 3100 is set to two, and the two driving assemblies 3100 are respectively connected and arranged corresponding to the first propulsion assembly 3210 and the second propulsion assembly 3220. In this embodiment, the first propulsion assembly 3210 and the second propulsion assembly 3220 have the same structure and size. Therefore, the following only takes one of the propulsion assemblies as an example for introduction, and does not elaborate on the same structure. Correspondingly, the driving assembly 3100 may include a first driving assembly 3110 that independently drives the first propulsion assembly 3210 to move and a second driving assembly 3150 that independently drives the second propulsion assembly 3220 to move, and the first driving assembly 3110 and the second driving assembly 3150 have similar structures.

[0047] The first propulsion assembly 3210 includes a connection seat 3212 that is transmission-connected to the output shaft and a propeller 3211 that is movably connected to the connection seat 3212. A transmission structure is provided in the connection seat 3212 to transmit the driving force of the drive assembly 10 to the propeller 3211. The propeller 3211 rotates around the second axis 3230 under the action of the drive assembly 3100 and acts on the water to propel the water transportation vehicle forward. At the same time, the propeller 3211 is rotationally connected to the connection seat 3212, and the propeller 3211 as a whole can rotate around the second axis 3230 through the connection seat 3212 and realize multi-degree-of-freedom rotation through the adjustment assembly 3300.

[0048] The adjustment assembly 3300 includes a trim mechanism 3310, a steering mechanism 3320, and a propeller coupling rod 3330. One end of the first propulsion assembly 3110 and the second propulsion assembly 3150 are fixed at the transom 200 of the water transportation vehicle, and the other ends of the first propulsion assembly 3110 and the second propulsion assembly 3150 are connected to each other through the propeller coupling rod 3330. Further, the propeller coupling rod 3330 is connected between the propellers 3211 of the first propulsion assembly 3110 and the second propulsion assembly 3150, and the propeller coupling rod 3330 allows the positions of adjacent propellers 3211 to be adjusted simultaneously. The adjacent propellers 3211 can be arranged substantially in parallel, and the propeller coupling rod 3330 is arranged perpendicularly or in different planes with the propellers 3211.

[0049] The adjustment assembly 3300 includes at least two groups, and each group of the adjustment assembly 3300 includes a trim mechanism 3310 and a steering mechanism 3320. Each group of the adjustment assembly 3300 is respectively arranged corresponding to the first propulsion assembly 3110 and the second propulsion assembly 3150. One end of the trim mechanism 3310 is movably connected to the transom 200, and the other end is movably connected to the propeller 3211. One end of the steering mechanism 3320 is movably connected to the transom 200, and the other end is movably connected to the propeller 3211. The trim mechanism 3310 can perform telescopic movement to adjust the angle of the propeller 3211 relative to the water surface, and the angle is the lifting angle of the propeller 3211, that is, the trim mechanism 3310 is used to adjust the lifting angle of the propeller 3211 in the first plane, and the second axis 3230 and the central axis of the trim mechanism 3310 intersect to form the first plane. It should be known that the second propulsion assembly 3150 can define the above-mentioned first plane, which will not be repeated here. The trim mechanism 3310 controls the volume of the part of the propeller 3211 immersed in the water by controlling the lifting and lowering of the propeller 3211, thereby controlling the resistance and thrust. The steering mechanism 3320 can perform telescopic movement to adjust the angle between the second axis 3230 and the first axis 3160 in the horizontal direction, that is, to adjust the angle between the first plane and the first axis 3160, which is the swing angle of the propeller 3211. The steering mechanism 3320 controls the angle between the propeller 3211 and the forward direction of the water transportation vehicle by controlling the swing of the propeller 3211, thereby causing the propulsion device 300 to generate a thrust that is deflected from the forward direction to turn the water transportation vehicle.

[0050] In one embodiment, if Figure 6 and 7As shown, the housing 5 of the pull-wire displacement sensor 100 is arranged inside the hull of a semi-submerged propeller-propelled ship, and the housing 5 is fixed to the hull through a second mounting hole 51. The end lock 13 is passed through the stern plate 200 and is used to connect with the part to be detected in the water body. Specifically, the end lock 13 passes through the stern plate 200 and is connected to the steering mechanism 3320 or the trim mechanism 3310. In this embodiment, the part to be detected is the steering mechanism 3320 or the trim mechanism 3310. More specifically, the first end 22 is connected to the connecting piece provided on the outer shell of the steering mechanism 3320 or the trim mechanism 3310 by a thread, and the end lock 13 is connected to the steering mechanism 3320 or the trim mechanism 3310 through the first mounting hole 131. A sealing member is provided between the stern plate 200 and the flexible shaft 21 to prevent water from penetrating into the interior of the hull. The sealing member in this embodiment can be a sealing ring, a sealant or other filler.

[0051] When the steering mechanism 3320 drives the wire rope 1 to move synchronously through the end lock 13, the wire rope 1 drives the winding shaft 7 to rotate, and the linear displacement of the steering mechanism 3320 can be calculated by measuring the change in the angular displacement of the winding shaft 7 through the detection element 8 and combining it with the pre-set circumference of the winding shaft 7. The rotation angle of the steering mechanism 3320 can be calculated by the obtained linear displacement of the steering mechanism 3320, thereby obtaining the swing angle of the propeller 3211.

[0052] In other embodiments not shown, the end lock 13 can also be inserted into the transom 200 and connected to the trim mechanism 3310. Similarly, when the trim mechanism 3310 drives the wire rope 1 to move synchronously through the end lock 13, the wire rope 1 drives the winding shaft 7 to rotate, and the linear displacement of the trim mechanism 3310 can be calculated by measuring the change in the angular displacement of the winding shaft 7 through the detection element 8 and combining it with the pre-set circumference of the winding shaft 7. The rotation angle of the trim mechanism 3310 can be calculated by the obtained linear displacement of the trim mechanism 3310, thereby obtaining the angle of the propeller 3211 relative to the water surface, which is the lifting angle of the propeller 3211.

[0053] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0054] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0056] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0058] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A semi-submerged propeller-propelled ship, characterized in that: The invention comprises a hull, a propulsion device and a pull-wire displacement sensor, wherein the hull comprises a transom, the propulsion device is located outside the hull and connected to the transom, and the propulsion device comprises a steering mechanism and a trim mechanism. The wire displacement sensor includes: a shell, disposed within the hull; A winding shaft, disposed in the housing; A detection element, disposed in the housing and connected to the winding shaft; A steel wire rope, one end of which passes through the housing and is connected to the winding shaft, and the other end of which is connected to the steering mechanism or the trim mechanism; A flexible member, comprising a flexible shaft and a first end and a second end connected to both ends of the flexible shaft, is sleeved outside the steel wire rope, and the steel wire rope protrudes out of opposite ends of the flexible member; the first end is connected to a connecting member provided on the outer shell of the steering mechanism or the trim mechanism; A watertight plate, which is sleeved on the outer periphery of the flexible member and arranged between the first end and the second end, and the watertight plate is sealed and connected to the flexible member; A positioning member, which is sleeved outside the steel wire rope and connected between the housing and the second end, so as to mount the flexible member to the housing; A sealing tube is arranged between the positioning piece and the steel wire rope, and the sealing tube and the steel wire rope are interference fit; in a direction parallel to the central axis of the main body, a plurality of sealing parts are arranged at intervals, and the sealing parts and the steel wire rope are interference fit; the sealing tube includes a circular ring-shaped main body and a plurality of annular sealing parts arranged on the inner circumference of the main body, the minimum inner diameters of any two sealing parts are different, and in a direction parallel to the central axis of the main body and gradually approaching the shell, the minimum inner diameters of the plurality of sealing parts gradually decrease.

2. The semi-submerged propeller-propelled ship according to claim 1, characterized in that: The sealing part has an axisymmetric structure.

3. The semi-submerged propeller-propelled ship according to claim 1, characterized in that: The positioning member is sleeved on the outside of the flexible member. The positioning member, the flexible member, the steel wire rope and the shell are surrounded to form a containing space. The sealing tube is arranged in the containing space.

4. The semi-submerged propeller-propelled ship according to claim 1, characterized in that: The flexible member includes a flexible shaft and a first end and a second end connected at both ends of the flexible shaft, the second end is closer to the shell than the first end, the positioning member is connected between the second end and the shell, the watertight plate is arranged between the first end and the second end, and the first end is connected to a fixing member arranged in water.

5. The semi-submerged propeller-propelled vessel according to claim 2, characterized in that: The wire displacement sensor also includes a detection module, which includes a detection member and a prompt member. The detection member is sleeved on the outer circumference of the wire rope. In a direction parallel to the central axis of the main body, the detection member is closer to the shell than at least one of the sealing parts. The prompt member is arranged outside the shell. The detection member is a moisture meter. When the moisture value detected by the detection member is greater than a preset value, the prompt member will issue a prompt information perceptible to humans.

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