Automatic hydrofoil adjusting structure for hydrofoil ship

Abstract

The utility model belongs to the technical field of hydrofoil ships, and provides an automatic hydrofoil adjusting structure for a hydrofoil ship, which comprises a main hydrofoil plate, and a strut is mounted at the upper end of the main hydrofoil plate; and the number of the flaps is at least one, and the flaps are installed on one side of the main hydrofoil plate. By adjusting the ratio of the connecting shaft, the fulcrum shaft, the supporting shaft and the shaft rod, the force scaling rod can effectively scale the output force of the driving piece and transmit the output force to the connecting rod mechanism, so that the load capacity of the whole transmission scheme is remarkably improved, and the transmission efficiency is improved. And secondly, the connecting rod mechanism also has the capability of stably and accurately transmitting the contraction and stretching actions of the driving piece. According to the technical scheme, contraction or stretching of the driving piece can be accurately and correctly transmitted to the flap through the connecting rod mechanism, then accurate control over the rotation angle of the flap is achieved, the stability and safety of a hydrofoil ship in the sailing process are improved, and powerful support is provided for fine adjustment of the posture of a ship body.

Description

Technical Field

[0001] This utility model belongs to the field of hydrofoil technology, specifically an automatic adjustment structure for hydrofoils in hydrofoils. Background Technology

[0002] As a vital mode of transportation, water transport has long faced two major challenges: high energy consumption and poor passenger comfort. This is primarily because ordinary boats experience significant resistance when navigating water, leading to persistently high energy consumption. Simultaneously, the direct contact between the boat hull and the water surface results in relatively poor wave resistance, further impacting passenger comfort.

[0003] To address these issues, hydrofoils were developed. Drawing inspiration from aircraft design, hydrofoils allow the hull to detach from the water at high speeds, relying solely on the lift generated by hydrofoils mounted on the sides or bottom of the hull for support. This design significantly reduces water resistance, enabling the vessel to glide smoothly and at high speeds, thereby drastically reducing energy consumption.

[0004] To achieve smooth movement and agile turning in a hydrofoil, precise control of the hydrofoil's lift is essential. Changes in lift not only affect the vessel's stability and speed but also directly impact passenger comfort. To achieve this, flaps, as a common method for controlling hydrofoil lift, are particularly important for their precise control and long-term reliability.

[0005] In the field of hydrofoil design, how to efficiently and precisely control flaps to adjust lift has always been a key challenge in technological development. Although the control scheme of traditional aircraft flaps is technically mature, its large size and complex design mean that directly applying it to hydrofoils would significantly increase the hull load and adversely affect the hydrofoil's flight drag, thereby reducing the overall energy efficiency of the hydrofoil.

[0006] To address this issue, the hydrofoil surfboard industry has attempted to adopt a servo-controlled flap solution. While this solution achieves some degree of automated flap control, the inherent limitations of servos, such as relatively short lifespan and limited load capacity, restrict their widespread application on high-performance hydrofoils. More importantly, the design of directly fixing the upper end of the lever to the servo arm in this solution leads to instability in fixing accuracy. This not only affects the precision of flap control but may also accelerate component damage due to long-term vibration and wear. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model provides an automatic hydrofoil adjustment structure for hydrofoils on hydrofoils, thereby resolving the problems described above.

[0008] An automatic hydrofoil adjustment structure for a hydrofoil boat includes:

[0009] Main hydrofoil, with a support column installed at the upper end of the main hydrofoil;

[0010] The flap is provided at least one, the flap is installed on one side of the main hydrofoil, a connecting plate is provided on one side of the main hydrofoil, and a connecting shaft is installed at one end of the flap, the connecting shaft being rotatably connected to the connecting plate;

[0011] A transmission assembly is disposed above the support column. The transmission assembly is used to adjust the angle of the flap. The transmission assembly includes a drive component disposed at the upper end of the support column. The upper end of the support column is rotatably connected to a force-adjusting rod via a support shaft. The output end of the drive component is rotatably mounted on the front end of the force-adjusting rod. A follower component is mounted at the rear end of the force-adjusting rod. The lower end of the follower component is rotatably mounted on one end of the flap.

[0012] Preferably, the driven member includes a support shaft passing through the inside of the force-scaling rod, and a connecting frame is rotatably mounted on the outer surface of the support shaft.

[0013] Preferably, a drive rod is installed at the lower end of the connecting frame, a fixing frame is installed at one end of the flap, a shaft is passed through the fixing frame, an mounting plate is rotatably installed on the outer surface of the shaft, and the upper end of the mounting plate is connected to the lower end of the drive rod.

[0014] Preferably, it also includes an adjustment component, which is installed on the upper end of the support column for adjusting the angle of the main hydrofoil. The adjustment component includes a mounting frame, and a U-shaped hanger is installed at the lower end of the mounting frame. A rotating shaft is rotatably installed inside the U-shaped hanger, and the support column is fixedly installed on the outer surface of the rotating shaft.

[0015] Preferably, a helical gear one is mounted on the outer surface of the rotating shaft, and a helical gear two is rotatably mounted inside the U-shaped hanger, with the helical gear one meshing with the helical gear two.

[0016] Preferably, a control component is mounted on the upper end of the mounting bracket, and the output end of the control component is connected to the second helical gear.

[0017] An automatic hydrofoil adjustment structure for a hydrofoil boat includes:

[0018] The main hydrofoil has a flap on one side and a support rod 1 and a support rod 2 on the top of the main hydrofoil, with the support rod 2 being fixedly connected to the main hydrofoil.

[0019] The adjustment component, which is installed on the upper end of the support rod, is used to adjust the angle between the main hydrofoil and the flaps and the hydrofoil boat;

[0020] A folding assembly is installed between support rod one and support rod two, and the folding assembly is used to fold support rod one and support rod two.

[0021] Preferably, the adjustment assembly includes a mounting bracket, a U-shaped hanger is mounted on the lower end of the mounting bracket, a rotating shaft is rotatably mounted inside the U-shaped hanger, and a support rod is fixedly mounted on the outer surface of the rotating shaft.

[0022] Preferably, a helical gear one is mounted on the outer surface of the rotating shaft, and a helical gear two is rotatably mounted inside the U-shaped hanger. The helical gear one meshes with the helical gear two. A control component is mounted on the upper end of the mounting bracket, and the output end of the control component is connected to the helical gear two.

[0023] Preferably, the folding assembly includes two connecting plates that are fixedly installed on both sides of the second support rod, and a rotating rod is inserted between the two connecting plates. The rotating rod is rotatably inserted inside the first support rod. A motor is fixedly installed on one side of the first support rod, and the output end of the motor is fixedly connected to one end of the rotating rod through a coupling.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention establishes a stable and efficient linkage mechanism by aligning the support shaft and connecting shaft, the support shaft and supporting shaft, the supporting shaft and shaft rod, and the shaft rod and connecting shaft. This mechanism, along with the force-scaling rod, connecting frame, drive rod, and mounting plate assembly, creates a stable and efficient linkage. Due to the hydrofoil's weight, the flaps experience significant forces during hull-mounted navigation and attitude adjustments. The hydrofoil adjustment structure adjusts the ratios between the connecting shaft, support shaft, supporting shaft, and shaft rod. The force-scaling rod effectively scales the output force of the drive component and transmits it to the linkage mechanism, significantly improving the load capacity of the entire transmission system. Furthermore, the linkage mechanism stably and accurately transmits the contraction and extension movements of the drive component. Both contraction and extension of the drive component are accurately and flawlessly transmitted to the flaps through the linkage mechanism, enabling precise control of the flap rotation angle. This not only improves the stability and safety of the hydrofoil during navigation but also provides strong support for fine-tuning the hull's attitude. Attached Figure Description

[0026] Figure 1 This is a first-view structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0028] Figure 3 For the present utility model Figure 2 Enlarged view of a section at point B in the middle;

[0029] Figure 4 For the present utility model Figure 2 Enlarged view of a portion of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the third-view structure of this utility model;

[0031] Figure 6 This is a first-view structural schematic diagram of Embodiment 3 of the present invention;

[0032] Figure 7 This is a second-view structural schematic diagram of Embodiment 3 of the present invention.

[0033] In the picture:

[0034] 1. Main hydrofoil; 2. Support column; 3. Connecting plate; 4. Connecting shaft; 5. Flap; 6. Transmission assembly; 61. Drive component; 62. Support shaft; 63. Force expansion rod; 64. Support shaft; 65. Connecting frame; 66. Drive rod; 67. Fixing frame; 68. Shaft; 69. Mounting plate; 7. Adjustment assembly; 71. Mounting frame; 72. U-shaped hanger; 73. Rotating shaft; 74. Helical gear one; 75. Helical gear two; 76. Control component; 8. Support rod one; 9. Support rod two; 10. Folding assembly; 101. Connecting plate; 102. Rotating rod; 103. Motor. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. It should be noted that the drawings are schematic and not illustrated to scale. For clarity and convenience, the relative sizes and proportions of the parts shown in the drawings have been exaggerated or reduced in size. Any size is only illustrative and not limiting.

[0036] Example 1:

[0037] refer to Figures 1-5 This utility model provides an automatic hydrofoil adjustment structure for a hydrofoil boat, comprising:

[0038] Main hydrofoil 1, with a support column 2 installed at the upper end of the main hydrofoil 1;

[0039] At least one flap 5 is provided. The flap 5 is installed on one side of the main hydrofoil plate 1. A connecting plate 3 is provided on one side of the main hydrofoil plate 1. A connecting shaft 4 is installed at one end of the flap 5. The connecting shaft 4 is rotatably connected to the connecting plate 3.

[0040] The transmission assembly 6 is located above the support column 2. The transmission assembly 6 is used to adjust the angle of the flap 5. The transmission assembly 6 includes a drive member 61 located at the upper end of the support column 2. The upper end of the support column 2 is rotatably connected to a force-adjusting rod 63 via a support shaft 62. The output end of the drive member 61 is rotatably mounted on the front end of the force-adjusting rod 63. A follower is mounted at the rear end of the force-adjusting rod 63. The lower end of the follower is rotatably mounted on one end of the flap 5. The drive member 61 includes, but is not limited to, an electric telescopic rod.

[0041] The driven component includes a support shaft 64 that passes through the force-expanding rod 63, and a connecting bracket 65 is rotatably mounted on the outer surface of the support shaft 64.

[0042] A drive rod 66 is installed at the lower end of the connecting frame 65, and a fixing frame 67 is installed at one end of the flap 5. A shaft 68 passes through the fixing frame 67, and a mounting plate 69 is rotatably installed on the outer surface of the shaft 68. The upper end of the mounting plate 69 is connected to the lower end of the drive rod 66.

[0043] Detailed Implementation: When the drive member 61 retracts, its output end moves backward, pulling the force scaling rod 63 to rotate counterclockwise along the support shaft 62. Simultaneously, it pulls the connecting frame 65 at the upper end of the drive rod 66 to rotate counterclockwise along the support shaft 64, causing the drive rod 66 to move upward. This, in turn, drives the fixed frame 67 upward via the mounting plate 69 and the shaft 68, causing the flap 5 to rotate counterclockwise on the side of the connecting plate 3 via the connecting shaft 4. This, in turn, causes the flap 5 to rotate counterclockwise on the side of the main hydrofoil plate 1 to adjust its angle. Conversely, when the drive member 61 extends, its output end moves forward, pushing the force scaling rod 63 to rotate clockwise along the support shaft 62. This, in turn, causes the connecting frame 65 at the upper end of the drive rod 66 to rotate clockwise along the support shaft 64, causing the drive rod 66 to move downward. This, in turn, drives the flap 5 to rotate clockwise on the side of the main hydrofoil plate 1 to adjust its angle. The linkage mechanism can effectively ensure a one-to-one correspondence and real-time response between the electric cylinder push rod and the flap 5.

[0044] By setting the support shaft 62 parallel to the connecting shaft 4, the support shaft 62 parallel to the support shaft 64, the support shaft 64 parallel to the shaft 68, and the shaft 68 parallel to the connecting shaft 4, the connecting shaft 4, support shaft 62, support shaft 64, and shaft 68 together form a stable and efficient linkage mechanism through the force scaling rod 63, connecting frame 65, drive rod 66, and mounting plate 69. Due to the weight of the hydrofoil itself, the flap 5 is subjected to a large force during hull wing flight and attitude adjustment. The hydrofoil adjustment structure adjusts the ratio between the connecting shaft 4, support shaft 62, support shaft 64, and shaft 68. The force scaling rod 63 can effectively scale the output force of the drive component 61 and transmit it to the linkage mechanism, thereby significantly improving the load capacity of the entire transmission scheme. In addition, the linkage mechanism also has the ability to stably and accurately transmit the contraction and extension actions of the drive component 61. Whether it is the retraction or extension of the drive component 61, it can be accurately and flawlessly transmitted to the flap 5 through the linkage mechanism, thereby achieving precise control of the rotation angle of the flap 5. This not only improves the stability and safety of the hydrofoil during navigation, but also provides strong support for the fine adjustment of the hull attitude.

[0045] Example 2:

[0046] refer to Figure 1 The second embodiment of this utility model includes:

[0047] Main hydrofoil 1, with a support column 2 installed at the upper end of the main hydrofoil 1;

[0048] At least one flap 5 is provided. The flap 5 is installed on one side of the main hydrofoil plate 1. A connecting plate 3 is provided on one side of the main hydrofoil plate 1. A connecting shaft 4 is installed at one end of the flap 5. The connecting shaft 4 is rotatably connected to the connecting plate 3.

[0049] Adjustment component 7, which is installed on the upper end of support column 2, is used to adjust the angle of main hydrofoil 1.

[0050] The adjustment component 7 includes a mounting bracket 71, a U-shaped hanger 72 is mounted on the lower end of the mounting bracket 71, a rotating shaft 73 is rotatably mounted inside the U-shaped hanger 72, and the support column 2 is fixedly mounted on the outer surface of the rotating shaft 73. The mounting bracket 71 can be installed on the hydrofoil by welding.

[0051] A helical gear 74 is mounted on the outer surface of the rotating shaft 73, and a helical gear 75 is rotatably mounted inside the U-shaped hanger 72. The helical gear 74 meshes with the helical gear 75.

[0052] A control component 76 is mounted on the upper end of the mounting bracket 71. The output end of the control component 76 is connected to the helical gear 75. The control component 76 includes, but is not limited to, a motor.

[0053] Detailed implementation: By firmly welding the mounting bracket 71 to the hydrofoil boat, when the hydrofoil needs to be activated, the control unit 76 drives the second helical gear 75 to rotate. This rotation, in turn, drives the meshing helical gear 74 to rotate synchronously. Finally, through the transmission of the shaft 73, the support column 2 rotates the entire hydrofoil system to the appropriate position, smoothly placing the hydrofoil into the water. This process is not only fast and efficient, but also ensures the accuracy and stability of the hydrofoil when it is put into use.

[0054] When the hydrofoil is no longer needed, such as when the hydrofoil is moored, sailing at low speed, or entering shallow water, the control unit 76 is rotated in the opposite direction, causing helical gears 75 and 74 to rotate in the opposite direction. This action drives the shaft 73 to rotate the support column 2, thereby achieving the folding and storage of the hydrofoil. This folding process not only greatly reduces the space occupied by the hydrofoil, allowing the hydrofoil to adapt more flexibly to different navigation environments and mooring conditions, but also helps to reduce the drag and energy consumption of the vessel when not in use, improving overall navigation efficiency.

[0055] Furthermore, during the hydrofoil's operation, the overall tilt angle of the main hydrofoil 1 and flaps 5 can be adjusted via the control unit 76. This function allows the hydrofoil to make precise attitude adjustments according to navigation requirements to optimize its performance. Simultaneously, the individual adjustment function of the transmission assembly 6 enables fine control of the flap 5's angle, further enhancing the hydrofoil's stability and maneuverability under complex navigation conditions.

[0056] Example 3:

[0057] refer to Figures 6-7 The third embodiment of this utility model includes:

[0058] Main hydrofoil 1, flap 5 is provided on one side of main hydrofoil 1, support rod 1 8 and support rod 2 9 are provided above main hydrofoil 1, and support rod 2 9 is fixedly connected to main hydrofoil 1.

[0059] Adjustment component 7, which is installed on the upper end of support rod 8, is used to adjust the angle between the main hydrofoil 1 and the flap 5 and the hydrofoil boat;

[0060] Folding assembly 10 is installed between support rod 1 8 and support rod 2 9. Folding assembly 10 is used to fold support rod 1 8 and support rod 2 9.

[0061] The adjustment assembly 7 includes a mounting bracket 71, a U-shaped hanger 72 is mounted on the lower end of the mounting bracket 71, a rotating shaft 73 is rotatably mounted inside the U-shaped hanger 72, and a support rod 8 is fixedly mounted on the outer surface of the rotating shaft 73.

[0062] A helical gear 74 is mounted on the outer surface of the rotating shaft 73. A helical gear 75 is rotatably mounted inside the U-shaped hanger 72. The helical gear 74 meshes with the helical gear 75. A control component 76 is mounted on the upper end of the mounting bracket 71. The output end of the control component 76 is connected to the helical gear 75.

[0063] The folding assembly 10 includes two connecting plates 101 that are fixedly installed on both sides of the second support rod 9. A rotating rod 102 is inserted between the two connecting plates 101. The rotating rod 102 is rotatably inserted inside the first support rod 8. A motor 103 is fixedly installed on one side of the first support rod 8. The output end of the motor 103 is fixedly connected to one end of the rotating rod 102 through a coupling.

[0064] Detailed Implementation: By securely welding the mounting bracket 71 to the hydrofoil, when the hydrofoil needs to be activated, the control unit 76 drives the second helical gear 75 to rotate. This rotation, in turn, drives the meshing helical gear 74 to rotate synchronously. Finally, through the transmission of the shaft 73, the support rods 8 and 9 rotate the entire hydrofoil system to the appropriate position, smoothly placing the main hydrofoil plate 1 and flaps 5 into the water. Furthermore, during the hydrofoil's navigation, the overall tilt angle of the main hydrofoil plate 1 and flaps 5 can be adjusted by operating the control unit 76. This function allows the hydrofoil to make precise attitude adjustments according to navigation requirements to optimize navigation performance.

[0065] By starting the motor 103, the rotating rod 102 can be driven to rotate. This rotation further drives the connecting plate 101 to rotate, which in turn causes the second support rod 9 to rotate, realizing the folding function of the second support rod 9. When the hydrofoil device is folded, its overall volume is significantly reduced, which is extremely advantageous for the transportation process, saving a lot of space and thus reducing transportation costs.

[0066] For hydrofoil devices requiring long-term storage, the folding design also demonstrates its unique advantages. It significantly reduces storage space requirements and improves space utilization efficiency. Furthermore, the folding design allows hydrofoil struts 8 and 9 to flexibly adjust their angles according to navigation conditions. This feature optimizes hydrofoil performance, enabling better adaptation to changing navigation environments and ensuring efficient and safe navigation.

[0067] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0068] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0069] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0070] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0073] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic hydrofoil adjustment structure for a hydrofoil boat, characterized in that: include: Main hydrofoil (1), with a support column (2) installed at the upper end of the main hydrofoil (1); Flap (5), at least one flap (5) is provided, the flap (5) is installed on one side of the main hydrofoil plate (1), a connecting plate (3) is provided on one side of the main hydrofoil plate (1), a connecting shaft (4) is installed at one end of the flap (5), and the connecting shaft (4) is rotatably connected to the connecting plate (3); A transmission assembly (6) is disposed above the support column (2). The transmission assembly (6) is used to adjust the angle of the flap (5). The transmission assembly (6) includes a drive member (61) disposed at the upper end of the support column (2). The upper end of the support column (2) is rotatably connected to a force scaling rod (63) via a support shaft (62). The output end of the drive member (61) is rotatably mounted on the front end of the force scaling rod (63). A follower is mounted at the rear end of the force scaling rod (63). The lower end of the follower is rotatably mounted on one end of the flap (5).

2. The automatic hydrofoil adjustment structure for a hydrofoil boat as described in claim 1, characterized in that: The driven member includes a support shaft (64) passing through the inside of the force scaling rod (63), and a connecting frame (65) is rotatably mounted on the outer surface of the support shaft (64).

3. The automatic hydrofoil adjustment structure for a hydrofoil boat as described in claim 2, characterized in that: A drive rod (66) is installed at the lower end of the connecting frame (65), a fixing frame (67) is installed at one end of the flap (5), a shaft (68) is passed through the fixing frame (67), and an mounting plate (69) is rotatably installed on the outer surface of the shaft (68). The upper end of the mounting plate (69) is connected to the lower end of the drive rod (66).

4. The automatic hydrofoil adjustment structure for a hydrofoil boat as described in claim 1, characterized in that: It also includes an adjustment component (7), which is installed on the upper end of the support column (2) for adjusting the angle of the main hydrofoil (1). The adjustment component (7) includes a mounting bracket (71), and a U-shaped hanger (72) is installed at the lower end of the mounting bracket (71). A rotating shaft (73) is rotatably installed inside the U-shaped hanger (72), and the support column (2) is fixedly installed on the outer surface of the rotating shaft (73).

5. The automatic hydrofoil adjustment structure for a hydrofoil boat as described in claim 4, characterized in that: The outer surface of the rotating shaft (73) is equipped with a helical gear one (74), and the U-shaped hanger (72) is rotatably equipped with a helical gear two (75), and the helical gear one (74) meshes with the helical gear two (75).

6. The automatic hydrofoil adjustment structure for a hydrofoil boat as described in claim 5, characterized in that: The upper end of the mounting bracket (71) is equipped with a control component (76), and the output end of the control component (76) is connected to the helical gear (75).

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