Mechanical paddle

Abstract

The utility model relates to a mechanical paddle which comprises a coupling piece, a propeller hub, a paddle body, a power control mechanism, a supporting assembly and an angle adjusting piece. The propeller hub is of a hollow shell structure and fixedly installed at one end of the coupling piece, and the other end of the coupling piece is suitable for being connected with a tail shaft. The power control mechanism is installed on the coupling piece, one side of the power control mechanism extends into a shell of the propeller hub, and an adjusting shaft is arranged on the side, extending into the propeller hub, of the power control mechanism. The supporting assembly is installed on the adjusting shaft. More than two mounting holes are formed in a shell of the propeller hub, the mounting holes are opposite to the supporting assembly, the supporting assembly is rotatably provided with a rotary table through the mounting holes, and the more than two paddles are mounted on the rotary table in a one-to-one correspondence manner; connecting columns are arranged on the rotary tables, the angle adjusting pieces are movably installed on the adjusting shafts, push rods corresponding to the connecting columns are arranged on the angle adjusting pieces, and the push rods are connected with the connecting columns. The problem of excessive abrasion caused by large hydraulic transmission pressure difference is avoided, and the service life of the paddle is prolonged.

Description

Technical Field

[0001] The present application relates to the field of impellers, and in particular to a mechanical blade. Background Art

[0002] Aircraft in the sky and ships in the water all require propulsion power ranging from hundreds of kilowatts to tens of thousands of kilowatts. Both medium and low-speed aircraft and ships need to use propeller blades as propulsion devices. The angle between the propeller blades and the fluid during rotation determines the size of the work-doing rotational torque. When the engine output power is different, the aircraft or ship movement speed is different, and the fluid flow direction is different, it is best to dynamically adjust the propeller blades to an optimal angle and match the power and load to achieve energy saving and precise control. The actuator for dynamically controlling the rotating propeller blades is easy to design and implement on aircraft, but it is more difficult to implement on ships. Because the ship propeller is submerged in water and cannot be maintained at any time, it is also required that there must be no exposed parts, the structure must be strong, and it must be reliably sealed, etc., which is quite difficult.

[0003] Most propeller blades today use a dynamic seal hydraulic power oil input technology route, that is, a certain pressure of hydraulic oil is input into the continuously rotating transmission shaft through a dynamic seal device as the power source for increasing or decreasing the blade angle. Then a hydraulic cylinder is set in the propeller hub under the blade to generate thrust as the power for the blade rotation.

[0004] However, this type of hydraulic propeller uses a dynamic seal device to input hydraulic power oil into the rotating shaft of the propeller when adjusting the propeller angle. If the input pressure difference is not enough, the hydraulic cylinder power is too small, and the input pressure difference is large, the dynamic seal will be damaged or excessively worn. In practice, this device can only input hydraulic power oil that is one order of magnitude lower than the working pressure of the commonly used hydraulic cylinder. Even when white alloy is used as a dynamic seal, excessive wear failures often occur. Summary of the invention

[0005] In view of this, the present application proposes a mechanical blade, which avoids the problem of excessive wear caused by a large pressure difference in hydraulic transmission and increases the service life of the blade.

[0006] According to one aspect of the present application, there is provided a mechanical blade, comprising:

[0007] Couplings, hubs, blades, power control mechanisms, support assemblies, and angle adjustment components;

[0008] The propeller hub is a hollow shell structure, and is fixedly mounted on one end of the coupling, and the other end of the coupling is suitable for connecting the tail shaft;

[0009] The power control mechanism is installed on the coupling, one side of the power control mechanism extends into the housing of the hub, an adjustment shaft is arranged on the side of the power control mechanism extending into the hub, the adjustment shaft is coaxially arranged with the hub, and the power control mechanism drives the adjustment shaft to rotate;

[0010] The support assembly is mounted on the adjustment shaft;

[0011] The shell of the hub is provided with more than two mounting holes, the mounting holes are arranged opposite to the support assembly, the support assembly is rotatably mounted with a turntable through the mounting holes, the blades are more than two, and the blades are mounted on the turntable one by one;

[0012] The turntable is provided with a connecting column, the angle adjustment member is movably installed on the adjustment shaft, the angle adjustment member is provided with a push rod corresponding to the connecting column, and the push rod is connected to the connecting column so that the angle adjustment member drives the turntable to rotate through the push rod.

[0013] In a possible implementation, the angle adjustment member includes a moving platform and a pin shaft;

[0014] A threaded hole is provided on the movable platform, one end of the adjusting shaft is a trapezoidal screw, and the threaded hole on the movable platform matches the trapezoidal screw of the adjusting shaft;

[0015] The pin shafts are fixed on the moving platform, the number of the pin shafts matches the number of the push rods, and the push rods are connected to the pin shafts one by one.

[0016] In a possible implementation, the power control mechanism includes a forward transmission gear ring, a forward transmission gear shaft, and a brake;

[0017] An assembly hole is formed at one end of the coupling, and one end of the forward transmission gear shaft is fixedly mounted on the assembly hole of the coupling;

[0018] Gear segments are provided at both ends of the forward transmission gear shaft, the forward transmission gear ring is coaxially arranged with the coupling, the forward transmission gear ring is an internal gear ring, and a gear segment at one end of the forward transmission gear shaft is meshed with the forward transmission gear ring;

[0019] The adjusting shaft is provided with a transmission gear, the transmission gear is meshed with the gear segment at the other end of the forward transmission gear shaft, and the adjusting shaft is installed inside the propeller hub through the forward transmission gear shaft;

[0020] The brake is arranged on the outer side of the forward transmission gear ring, and the brake is suitable for being connected to the hull so as to control the rotation of the forward transmission gear ring through the brake.

[0021] In a possible implementation, the power control mechanism further includes a reverse transmission ring gear and a reverse transmission gear;

[0022] The reverse transmission gear is fixedly mounted on the coupling member via a shaft, the reverse transmission gear ring is an internal gear ring, the reverse transmission gear ring is coaxially arranged with the forward transmission gear ring, and the reverse transmission gear ring is meshed with the reverse transmission gear;

[0023] The gear section of the forward transmission gear shaft meshing with the forward transmission gear ring meshes with the reverse transmission gear, so that the reverse transmission gear can drive the forward transmission gear shaft to rotate;

[0024] The brake is arranged on the outer side of the reverse transmission gear ring so as to control the rotation of the reverse transmission gear ring through the brake.

[0025] In a possible implementation, the support assembly is in the shape of a cross axis, a matching hole is provided at the axis center of the support assembly, and the support assembly can be rotatably mounted on the adjustment shaft through the matching hole;

[0026] The support assembly and the angle adjustment member are sequentially mounted on the adjustment shaft, and the support assembly is arranged on a side adjacent to the coupling member;

[0027] A sleeve is provided on one side of the turntable facing the support assembly, so as to be sleeved on the axial surface of the support assembly through the sleeve;

[0028] The connecting column and the sleeve are arranged on the same side.

[0029] In a possible implementation, the side wall of the hub where the mounting hole is opened is a spherical surface.

[0030] In a possible implementation, the coupling is a coupling, the inner wall of the coupling is conical, a groove is provided on the inner wall of the coupling, and an oil filling hole connected to the groove is also provided on the coupling.

[0031] In a possible implementation, the brake includes a forward brake member, a reverse brake member, a fixing member, and a pushing member;

[0032] The forward brake member is disposed circumferentially around the forward transmission gear ring, and the reverse brake member is disposed circumferentially around the reverse transmission gear ring;

[0033] The forward brake member and the reverse brake member are both partially fixed on the fixing member, and the fixing member is suitable for being fixedly connected to the hull;

[0034] The pushing member passes through the fixing member and abuts against the forward braking member and the reverse braking member.

[0035] In a possible implementation, the fixing member includes two fixing plates and two fixing tubes;

[0036] The two fixing plates are both in an "Ω" shape, and the opening directions are opposite to each other to form a ring shape with two ears;

[0037] The pushing members are provided with two, and the two pushing members are respectively fixed between the opposite ears of the two fixing plates;

[0038] The two fixing pipes are respectively fixed on both sides of the two ears formed by the two fixing plates.

[0039] In a possible implementation, the forward brake member and the reverse brake member both have cavities therein for vacuuming or inflating;

[0040] Elastic steel wires are arranged in the inner cavities of the forward brake component and the reverse brake component, and the tails of the forward brake component and the reverse brake component are made of rubber material.

[0041] The mechanical blade of the present application is completed with the angle adjustment of the blade through the linkage of the coupling, the hub, the blade, the power control mechanism, the support assembly and the angle adjustment member. First, the tail shaft of the hull and the hub are connected by the coupling. Since the hub is the outer frame of the entire mechanical blade of the present application, the coupling plays the role of connecting the mechanical blade of the present application with the tail shaft of the hull, and the hub can be driven to rotate by the rotation of the tail shaft of the hull, thereby driving the blade to rotate. The above-mentioned power control mechanism, the adjustment shaft, the support assembly and the angle adjustment member form a mechanism for adjusting the angle of the blade. The power control mechanism drives the adjustment shaft to rotate so that the angle adjustment member can move along the axis direction of the shaft on the adjustment shaft. The support assembly is used to support and place the turntable on which the blade is installed, and the angle of the blade is adjusted by the rotation of the turntable. The specific adjustment process is as follows: the power control mechanism controls the angle adjustment member to move on the adjustment shaft, and the push rod on the angle adjustment member moves with the angle adjustment member. The push rod drives the turntable to rotate on the support assembly by pulling the connecting column on the turntable, thereby completing the angle adjustment of the blade. The present application controls the rotation of the adjusting shaft to move the angle adjusting member on the adjusting shaft, thereby enabling the pushing member on the angle adjusting member to pull the turntable to rotate to complete the angle adjustment of the blade. The blade is adjusted in this mechanical manner, avoiding the problem of excessive wear caused by the large pressure difference of the hydraulic transmission, and increasing the service life of the blade.

[0042] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0044] Figure 1 A partial cross-sectional view showing the main structure of a mechanical blade according to an embodiment of the present application;

[0045] Figure 2 An appearance diagram of a mechanical blade according to an embodiment of the present application is shown;

[0046] Figure 3 A connection diagram showing a coupling and a hub of a mechanical blade according to an embodiment of the present application;

[0047] Figure 4 A structural diagram showing a coupling of a mechanical blade according to an embodiment of the present application;

[0048] Figure 5 A connection diagram showing a blade, a support assembly and a turntable of a mechanical blade of an embodiment of the present application;

[0049] Figure 6 A structural diagram showing a turntable of a mechanical blade according to an embodiment of the present application;

[0050] Figure 7 A diagram showing the installation structure of the angle adjustment member and the rotating shaft of the mechanical blade of the embodiment of the present application;

[0051] Figure 8 A diagram showing the connection between the support assembly and the turntable of the mechanical blade of the embodiment of the present application

[0052] Fig. 9 A structural diagram showing an adjustment shaft of a mechanical blade according to an embodiment of the present application;

[0053] Fig.10 A schematic diagram showing the connection between the forward transmission gear ring and the forward transmission gear shaft of the mechanical blade according to an embodiment of the present application;

[0054] Fig.11 A schematic diagram showing the connection between the reverse transmission ring gear and the reverse transmission gear of the mechanical blade of the embodiment of the present application;

[0055] Fig.12 A structural diagram showing a forward brake member of a mechanical blade according to an embodiment of the present application;

[0056] Fig.13 A partial structural diagram of a fixing part of a mechanical blade according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0057] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0058] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0061] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0062] Figure 1 A partial cross-sectional view showing the main structure of a mechanical blade according to an embodiment of the present application; Figure 2 An appearance diagram of a mechanical blade according to an embodiment of the present application is shown; Figure 3 A connection diagram showing a coupling and a hub of a mechanical blade according to an embodiment of the present application; Figure 4 A structural diagram showing a coupling of a mechanical blade according to an embodiment of the present application;

[0063] Figure 5 A connection diagram showing a blade, a support assembly and a turntable of a mechanical blade of an embodiment of the present application; Figure 6 A structural diagram showing a turntable of a mechanical blade according to an embodiment of the present application; Figure 7 A diagram showing the installation structure of the angle adjustment member and the rotating shaft of the mechanical blade of the embodiment of the present application; Figure 8 A connection diagram showing a support assembly and a turntable of a mechanical blade according to an embodiment of the present application; Fig. 9 A structural diagram showing an adjustment shaft of a mechanical blade according to an embodiment of the present application; Fig.10 A schematic diagram showing the connection between the forward transmission gear ring and the forward transmission gear shaft of the mechanical blade according to an embodiment of the present application; Fig.11 A schematic diagram showing the connection between the reverse transmission ring gear and the reverse transmission gear of the mechanical blade of the embodiment of the present application; Fig.12 A structural diagram showing a forward brake member of a mechanical blade according to an embodiment of the present application; Fig.13 FIG. 1 is a partial structural diagram of a fixing member of a mechanical blade according to an embodiment of the present application. Figure 1 , Figure 5 , Figure 6 or Figure 7 As shown, the mechanical blade includes: a coupling 100, a hub 200, a blade 300, a power control mechanism 400, a support assembly 500 and an angle adjustment member 600, wherein the hub 200 is a hollow shell structure, the hub 200 is fixedly mounted on one end of the coupling 100, and the other end of the coupling 100 is connected to the tail shaft of the hull. The power control structure is mounted on the coupling 100, one side of the power control mechanism 400 extends into the shell of the hub 200, and the side of the power control mechanism 400 extending into the hub 200 is provided with an adjustment shaft 700, the adjustment shaft is coaxially arranged with the hub 200, the power control mechanism 400 can drive the adjustment shaft 700 to rotate, and the support assembly 500 is mounted on the adjustment shaft 700. The housing of the hub 200 is provided with more than two mounting holes, which are arranged opposite to the support assembly 500. The blades 300 are rotatably connected to the support assembly 500 through the turntable 800, and the turntable 800 is rotatably connected to the support assembly 500 through the mounting holes. The number of blades 300, the number of turntables 800 and the number of mounting holes are the same, so that the blades 300 are rotatably installed on the support assembly 500 one by one. Each turntable 800 has a connecting column 810, and the angle adjustment member 600 is movably installed on the adjustment shaft 700, and the angle adjustment member is provided with a push rod 900 corresponding to the connecting column 810, so that the angle adjustment member drives the turntable 800 to rotate through the push rod 900.

[0064] The mechanical blade of the present application completes the angle adjustment of the blade 300 through the linkage of the coupling 100, the hub 200, the blade 300, the power control mechanism 400, the support assembly 500 and the angle adjustment member 600. First, the tail shaft of the hull and the hub 200 are connected through the coupling 100. Since the hub 200 is the outer frame of the entire mechanical blade of the present application, the coupling 100 plays the role of connecting the mechanical blade of the present application with the tail shaft of the hull. The rotation of the tail shaft of the hull can drive the hub 200 to rotate, thereby driving the blade 300 to rotate. The above-mentioned power control mechanism 400, the adjustment shaft 700, the support assembly 500 and the angle adjustment member 600 form a mechanism for adjusting the angle of the blade 300. The power control mechanism 400 drives the adjustment shaft 700 to rotate, so that the angle adjustment member 600 can move along the axis direction of the shaft on the adjustment shaft. The support assembly 500 is used to support and place the turntable 800 on which the blade 300 is installed, and the angle of the blade 300 is adjusted by the rotation of the turntable 800. The specific adjustment process is as follows: the power control mechanism 400 controls the angle adjustment member 600 to move on the adjustment shaft 700, and the push rod 900 on the angle adjustment member 600 moves with the angle adjustment member 600, and the push rod 900 drives the turntable 800 to rotate on the support assembly 500 by pulling the connecting column 810 on the turntable 800, thereby completing the angle adjustment of the blade 300. The present application controls the rotation of the adjustment shaft 700 to make the angle adjustment member move on the adjustment shaft 700, thereby making the pusher on the angle adjustment member pull the turntable 800 to rotate to complete the angle adjustment of the blade 300, and the blade 300 is adjusted by this mechanical method, avoiding the problem of excessive wear caused by the large pressure difference of the hydraulic transmission, and improving the service life of the blade 300.

[0065] Here, it should be pointed out that, in a possible implementation, an opening is provided at a section of the hub 200 facing the coupling shaft, thereby facilitating installation of various components in the hub 200 .

[0066] like Figures 1 to 8 As shown, in a possible implementation, the angle adjustment member 600 includes a moving platform 610 and a pin 620, wherein a threaded hole is provided on the moving platform 610, one end of the adjustment shaft 700 is a trapezoidal screw 710, and the threaded hole on the moving platform 610 matches the trapezoidal screw 710 of the adjustment shaft 700. The pin 620 is fixed on the moving platform 610, and the number of the pins 620 matches the number of the push rods 900, and the push rods 900 are connected to the pins 620 one by one. Thus, the movement can be carried out by the screw, and the screw-nut type transmission has a reliable reverse transmission self-locking, and when the system has no control action, it can be mechanically self-locked, and the entire system is idle without friction and power consumption, which reduces energy loss and increases the service life of the present application.

[0067] Here, it should be noted that, in a possible implementation, the moving platform 610 is a rectangular block structure, and a rectangular base is provided on each side wall of the moving platform 610, and four bases are arranged at intervals at the corners of the four side walls of the moving platform 610. The two end surfaces of the base are arranged flush with the two end surfaces of the moving platform 610, and the pin 620 is fixed on the base.

[0068] Here, it should also be pointed out that, in a possible implementation, four blades 300 are provided, four mounting holes are also provided on the hub 200, four turntables 800 are also provided, and four pins 620, connecting columns 810 and push rods 900 are provided. A pin 620 is provided on each base, and one end of each push rod 900 is connected to the corresponding pin 620, and the other end is connected to the corresponding connecting column 810.

[0069] like Figures 1 to 13 As shown, in a possible implementation, the power control mechanism 400 includes a forward transmission gear ring 410, a forward transmission gear shaft 420 and a brake 430. An assembly hole is provided on one end of the coupling 100, and one end of the forward transmission gear shaft 420 is fixedly mounted on the assembly hole of the coupling 100. Gear segments are provided at both ends of the forward transmission gear shaft 420. The forward transmission gear ring 410 is coaxially arranged with the coupling 100. The forward transmission gear ring 410 is an internal gear ring. The gear segment at one end of the forward transmission gear shaft 420 is meshed with the forward transmission gear ring 410. A transmission gear 720 is provided on the adjustment shaft 700. The transmission gear 720 is meshed with the gear segment at the other end of the forward transmission gear shaft 420. The adjustment shaft 700 is mounted inside the hub 200 through the forward transmission gear 720 column. The brake 430 is disposed on the outside of the forward transmission gear ring 410 , and the brake 430 is connected to the hull so as to control the rotation of the forward transmission gear ring 410 through the brake 430 .

[0070] The embodiment of the present application inputs the forward rotation torque through the transmission of the gear ring. When there is no operation, there is no relative movement between the forward transmission gear ring 410, the forward transmission gear shaft 420, and the adjustment shaft 700. When the control torque needs to be input, the forward transmission gear ring 410 that rotates synchronously with the tail shaft is braked by controlling the brake 430. At this time, relative movement occurs between the forward transmission gear ring 410 and the forward transmission gear shaft 420, and then the forward transmission gear shaft 420 drives the transmission gear 720 to rotate, so that the adjustment shaft 700 and the angle adjustment member 600 move relative to each other, the angle adjustment member 600 is displaced, and the angle of the blade 300 is adjusted. When the predetermined control angle is reached, the brake 430 stops working, the braking force disappears, and the differential disappears.

[0071] Here, it should be pointed out that, in a possible implementation, four forward transmission gear shafts 420 are provided, and the four forward transmission gears 720 surround a square space.

[0072] Here, it should also be pointed out that, further, in a possible implementation, the shaft of the reverse transmission gear 440 may be integrally formed or may be split, that is, the gear is mounted on the shaft.

[0073] Furthermore, in a possible implementation, the power control mechanism 400 further includes a reverse transmission gear ring 440 and a reverse transmission gear 440, wherein the reverse transmission gear ring 440 can be fixed on the coupling 100 through a shaft, the reverse transmission gear ring 440 is an internal gear ring, the reverse transmission gear ring 440 is coaxially arranged with the forward transmission gear ring 410, and the reverse transmission gear 440 is meshed with the reverse transmission gear ring 440. The gear section of the forward transmission gear shaft 420 meshing with the forward transmission gear ring 410 is also meshed with the reverse transmission gear 440, so that the reverse transmission gear 440 can also drive the forward transmission gear shaft 420 to rotate, thereby driving the transmission gear 720 to rotate. The brake 430 is arranged on the outside of the reverse transmission gear ring 440, and the brake 430 can control the reverse transmission gear ring 440 to rotate.

[0074] The embodiment of the present application also inputs reverse rotation torque through the transmission of the gear ring. Similarly, when there is no input action, there is no relative movement between the reverse transmission gear 440 and the reverse transmission gear ring 440, and they rotate as a whole with the coupling. When the input reverse torque reduces the angle of the blade 300, the brake 430 is used to brake the reverse transmission gear ring 440, and the reverse transmission gear ring 440 is stationary relative to the hull, and relative rotation occurs between the reverse transmission gear 440 and the reverse transmission gear ring 440. The rotation of the reverse transmission gear 440 also drives the forward transmission gear shaft 420 meshing with it to rotate, thereby rotating the transmission gear 720, causing the angle adjustment member 600 to move, and the push rod 900 pulls the turntable 800 to rotate, and the angle of the blade 300 changes. Since the transmission gear 720 drives the forward transmission gear shaft 420 to rotate through the reverse transmission gear 440, it can obtain a torque with the same torque magnitude and the opposite rotation direction, and the rotation direction of the adjustment shaft 700 is opposite, driving the turntable 800 to rotate in the opposite direction, thereby performing the operation of reducing the angle of the blade 300. When the predetermined control angle is reached, the brake stops working, the braking force disappears, and the differential disappears.

[0075] Here, it should be pointed out that, in a possible implementation, four reverse transmission gears 440 are provided, and they are respectively meshed with four forward transmission gears 720 .

[0076] In a possible implementation, the support assembly 500 is a cross-axis structure, and a matching hole is provided at the axis of the support assembly 500, and the support assembly 500 is rotatably mounted on the adjustment shaft 700 through the matching hole. The support assembly 500 and the angle adjustment member 600 are sequentially mounted on the adjustment shaft 700, and the support assembly 500 is arranged on a side adjacent to the coupling member 100. A sleeve is provided on the side of the turntable 800 facing the support assembly 500, so as to be sleeved on the axial surface of the support assembly 500 through the sleeve. The connecting column 810 is arranged on the same side as the sleeve.

[0077] The present application reduces the reaction force on the turntable 800 by configuring the support assembly 500 in a cross-axis shape. The turntable 800 can be mounted on the support assembly 500 from the outside to the inside through the mounting hole, thus avoiding the problem of the third and fourth turntables 800 being blocked due to the step-by-step mounting of existing products.

[0078] Here, it should be pointed out that, in a possible implementation, the support assembly 500 may be clearance-matched with the adjustment shaft 700 .

[0079] Here, it should also be noted that, in a possible implementation, the adjusting shaft 700 includes a first smooth section, a trapezoidal screw section, and a second smooth section that are sequentially distributed along the axis. The first smooth section is sequentially mounted with a transmission gear 720 and a support assembly 500, the trapezoidal screw section is mounted with a moving platform 610, and the second smooth section may be mounted with a bearing that contacts the outer wall of the hub 200.

[0080] In a possible implementation, the side wall of the hub 200 where the mounting hole is provided is a spherical surface, thereby optimizing the outer structure of the hub 200 and reducing the resistance to water.

[0081] Here, it should be pointed out that the hub 200 may include a first cylindrical end, a first spherical segment, a second cylindrical segment, and a second spherical segment, and both ends of the first cylindrical segment, the first spherical segment, the second cylindrical segment, and the second spherical segment are provided with openings, and the first cylindrical segment, the first spherical segment, the second cylindrical segment, and the second spherical segment are connected in sequence. The openings at the connection of the first cylindrical segment, the first spherical segment, the second cylindrical segment, and the second spherical segment match. The opening of the second spherical segment gradually decreases in the direction away from the second cylindrical segment, so that the second spherical segment is provided with a taper. The transmission gear 720 is located in the first cylindrical segment, and four mounting holes are provided on the first spherical segment, and the four mounting holes are provided at equal intervals around the side wall of the first spherical segment, and the bearing installed on the adjustment shaft 700 abuts against the inner wall of the second spherical segment.

[0082] In a possible implementation, the coupling 100 includes a coupling, the inner wall of the coupling is conical, a groove is provided on the inner wall of the coupling, and an oil injection hole connected to the groove is provided on the coupling. The tail shaft and the coupling are matched through a tapered surface, and four flat keys can be added to connect. During installation, the nut 110 can be pushed and locked with the tail shaft, and oil pressure is injected into the groove through the oil injection hole to make the tapered surface swell.

[0083] Here, it should be pointed out that in a possible implementation, a small hole is opened on the flange of the coupling for connecting with the hub 200, and the small hole on the coupling is filled with butter, and an integral dynamic sealing component is arranged on the outside.

[0084] In a possible implementation, the brake 430 includes a forward brake member 431, a reverse brake member 432, a fixing member 433 and a pushing member 434, wherein the forward brake member 431 is arranged around the axis of the forward transmission gear ring 410, and the reverse brake member 432 is arranged circumferentially around the reverse transmission gear ring 440. Both the forward brake member 431 and the reverse brake member 432 are partially fixed on the fixing member 433, and the fixing member 433 is fixedly connected to the hull. The pushing member 434 passes through the fixing member 433 and abuts against the forward brake member 431 and the reverse brake member 432.

[0085] Furthermore, in a possible implementation, the fixing member 433 includes two fixing plates 4331 and two fixing tubes 4332. The two fixing plates 4331 are both in an "Ω" shape, and the opening directions are opposite to each other to form a ring shape with two ears. Two pushing members 434 are provided, and the two pushing members 434 are respectively fixed between the opposite ears of the two fixing plates 4331, and the two fixing tubes 4332 are respectively fixed on both sides of the two ears formed by the two fixing plates 4331.

[0086] In one possible implementation, both the forward brake member 431 and the reverse brake member 432 have cavities therein for vacuuming or inflating, elastic steel wires are arranged in the internal cavities of the forward brake member 431 and the reverse brake member 432, and the tails of the forward brake member 431 and the reverse brake member 432 are made of rubber material.

[0087] When the braking action is performed, the forward brake member 431 and the reverse brake are tightened and surrounded to brake the forward transmission gear ring 410 and the reverse rotation gear ring respectively. At the same time, compressed air can be filled into the hollow core, and the rubber strip expands to fill the gap between the outer surface of the gear ring and the brake member, and the braking effect can be achieved by friction. When idling, the compressed air is released, and a little inward thrust is applied at both ends of the forward brake member 431 and the reverse brake member 432. Since there is an elastic steel wire in the hollow core of the rubber strip, the forward brake member 431 and the reverse brake member 432 will open and stay away from the gear ring surface, and there is no friction braking. At this time, the screw and nut device is self-locking in place, without additional friction and power consumption.

[0088] Here, it should be pointed out that, in a possible implementation, the fixing tube 4332 is in the shape of a curved tube.

[0089] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A mechanical blade, characterized in that: include: Couplings, hubs, blades, power control mechanisms, support assemblies, and angle adjustment components; The propeller hub is a hollow shell structure, and is fixedly mounted on one end of the coupling, and the other end of the coupling is suitable for connecting the tail shaft; The power control mechanism is installed on the coupling, one side of the power control mechanism extends into the housing of the hub, an adjustment shaft is arranged on the side of the power control mechanism extending into the hub, the adjustment shaft is coaxially arranged with the hub, and the power control mechanism drives the adjustment shaft to rotate; The support assembly is mounted on the adjustment shaft; The shell of the hub is provided with more than two mounting holes, the mounting holes are arranged opposite to the support assembly, the support assembly is rotatably mounted with a turntable through the mounting holes, the blades are more than two, and the blades are mounted on the turntable one by one; The turntable is provided with a connecting column, the angle adjustment member is movably installed on the adjustment shaft, the angle adjustment member is provided with a push rod corresponding to the connecting column, and the push rod is connected to the connecting column so that the angle adjustment member drives the turntable to rotate through the push rod.

2. The mechanical blade according to claim 1, characterized in that: The angle adjustment member includes a moving platform and a pin shaft; A threaded hole is provided on the movable platform, one end of the adjusting shaft is a trapezoidal screw, and the threaded hole on the movable platform matches the trapezoidal screw of the adjusting shaft; The pin shafts are fixed on the moving platform, the number of the pin shafts matches the number of the push rods, and the push rods are connected to the pin shafts one by one.

3. The mechanical blade according to claim 1, characterized in that: The power control mechanism includes a forward transmission gear ring, a forward transmission gear shaft and a brake; An assembly hole is formed at one end of the coupling, and one end of the forward transmission gear shaft is fixedly mounted on the assembly hole of the coupling; Gear segments are provided at both ends of the forward transmission gear shaft, the forward transmission gear ring is coaxially arranged with the coupling, the forward transmission gear ring is an internal gear ring, and a gear segment at one end of the forward transmission gear shaft is meshed with the forward transmission gear ring; The adjusting shaft is provided with a transmission gear, the transmission gear is meshed with the gear segment at the other end of the forward transmission gear shaft, and the adjusting shaft is installed inside the propeller hub through the forward transmission gear shaft; The brake is arranged on the outer side of the forward transmission gear ring, and the brake is suitable for being connected to the hull so as to control the rotation of the forward transmission gear ring through the brake.

4. The mechanical blade according to claim 3, characterized in that: The power control mechanism also includes a reverse transmission ring gear and a reverse transmission gear; The reverse transmission gear is fixedly mounted on the coupling member via a shaft, the reverse transmission gear ring is an internal gear ring, the reverse transmission gear ring is coaxially arranged with the forward transmission gear ring, and the reverse transmission gear ring is meshed with the reverse transmission gear; The gear section of the forward transmission gear shaft meshing with the forward transmission gear ring meshes with the reverse transmission gear, so that the reverse transmission gear can drive the forward transmission gear shaft to rotate; The brake is arranged on the outer side of the reverse transmission gear ring so as to control the rotation of the reverse transmission gear ring through the brake.

5. The mechanical blade according to claim 1, characterized in that: The support assembly is in the shape of a cross axis, and a matching hole is provided at the axis center of the support assembly, and the support assembly can be rotatably mounted on the adjustment shaft through the matching hole; The support assembly and the angle adjustment member are sequentially mounted on the adjustment shaft, and the support assembly is arranged on a side adjacent to the coupling member; A sleeve is provided on one side of the turntable facing the support assembly, so as to be sleeved on the axial surface of the support assembly through the sleeve; The connecting column and the sleeve are arranged on the same side.

6. The mechanical blade according to claim 1, characterized in that: The side wall of the hub where the mounting hole is opened is a spherical surface.

7. The mechanical blade according to claim 1, characterized in that: The coupling is a coupling, the inner wall of the coupling is conical, a groove is provided on the inner wall of the coupling, and an oil filling hole connected with the groove is also provided on the coupling.

8. The mechanical blade according to claim 4, characterized in that: The brake comprises a forward brake member, a reverse brake member, a fixing member and a pushing member; The forward brake member is disposed circumferentially around the forward transmission gear ring, and the reverse brake member is disposed circumferentially around the reverse transmission gear ring; The forward brake member and the reverse brake member are both partially fixed on the fixing member, and the fixing member is suitable for being fixedly connected to the hull; The pushing member passes through the fixing member and abuts against the forward braking member and the reverse braking member.

9. The mechanical blade according to claim 8, characterized in that: The fixing member comprises two fixing plates and two fixing tubes; The two fixing plates are both in an "Ω" shape, and the opening directions are opposite to each other to form a ring shape with two ears; The pushing members are provided with two, and the two pushing members are respectively fixed between the opposite ears of the two fixing plates; The two fixing pipes are respectively fixed on both sides of the two ears formed by the two fixing plates.

10. The mechanical blade according to claim 8, characterized in that: The forward brake member and the reverse brake member both have cavities therein for vacuuming or inflating; Elastic steel wires are arranged in the inner cavities of the forward brake component and the reverse brake component, and the tails of the forward brake component and the reverse brake component are made of rubber material.

Images