A test device for an outboard motor

Abstract

This invention provides a testing device for outboard motors, belonging to the field of outboard motor testing technology. It includes a simulation component and an outer water tank. The simulation component is located inside the outer water tank, and the outboard motor can be installed inside the simulation component. The simulation component can test the outboard motor. This invention uses a simulation component to fix the outboard motor on a clamping platform and injects liquid water suitable for the working water depth into the inner water tank. Simultaneously, sea salt is supplied as needed to adjust the salinity of the liquid water. Then, a first deflection mechanism drives the outboard motor, causing it to deflect back and forth along an arc-shaped positioning guide rail. A worm gear assembly drives the outboard motor to sway left and right, and a damping slide achieves lateral displacement. The salinity in the inner water tank is maintained, stably simulating the marine navigation environment and forming a multi-dimensional composite swaying scenario. This enables accurate testing of the outboard motor under all operating conditions, reducing the data distortion problems caused by single swaying and freshwater testing in traditional devices.

Description

Technical Field

[0001] This invention relates to the field of outboard motor testing technology, and in particular to a testing device for outboard motors. Background Technology

[0002] Outboard motors, as compact and independent propulsion systems, are widely used in recreational boats, workboats, and special-purpose vessels. Their ease of installation, flexible operation, and strong adaptability to shallow water make them a core choice for boat propulsion. However, the actual working environment of outboard motors is extremely complex. They must withstand the salt corrosion of the marine environment, the tilting / rolling / vibration of the boat during navigation, and meet the stringent requirements of international standard ISO8665:2006 and classification society certification for power, seaworthiness, stability, and other indicators. Therefore, precise simulation testing before delivery is a key step in ensuring product quality and market access.

[0003] Existing testing equipment lacks a sway simulation module or has insufficient sway simulation dimensions. The swaying of a vessel during navigation involves forward and backward deflection, left and right rolling, and lateral displacement during propulsion. However, traditional equipment can only achieve simple deflection in a single direction and cannot reproduce multi-dimensional complex sway scenarios, making it difficult to verify the seaworthiness of outboard motors. At the same time, existing equipment mostly uses freshwater testing, which cannot accurately adjust seawater salinity to simulate the marine corrosion environment, resulting in distorted test results for material corrosion resistance and power performance. Therefore, due to unrealistic environmental simulation and insufficient sway adjustment precision, the test data of key indicators such as power measurement and vibration noise deviate significantly from actual operating conditions, making it difficult to meet the stringent requirements of classification society certification for test data.

[0004] Therefore, this application provides a testing device for outboard motors to meet the requirements. Summary of the Invention

[0005] The technical problem this invention aims to solve is to provide a testing device for outboard motors. By setting up simulation components, the outboard motor is fixed to a clamping platform, and liquid water of appropriate working depth is injected into an inner water tank. Simultaneously, sea salt is supplied as needed to adjust the salinity of the liquid water. Then, a first deflection mechanism drives the outboard motor, causing it to deflect back and forth along an arc-shaped positioning guide rail. A worm gear assembly drives the outboard motor to sway left and right, and a damping slide achieves lateral displacement. The salinity in the inner water tank is maintained, stably simulating the marine navigation environment and forming a multi-dimensional composite swaying scenario. This allows for testing of core indicators such as the outboard motor's power, seaworthiness, and corrosion resistance, obtaining test data that closely reflects actual navigation conditions. This solves the problem of data distortion caused by single swaying and freshwater testing in existing testing devices.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A testing device for an outboard motor includes a simulation component and an outer water tank. The simulation component is located inside the outer water tank, and the outboard motor can be installed inside the simulation component. The simulation component can test the outboard motor. The simulation component includes an inner water tank, which is sealed and engaged with the outer water tank by a sealing strip. A positioning frame is fixedly installed on the top of the inner water tank. A rotating rod is rotatably connected to the inner wall of the middle part of the positioning frame. A damping slide is slidably installed on the rotating rod, and a first deflection mechanism is installed at the bottom of the damping slide.

[0008] Optionally, the first deflection mechanism includes a base, which is fixedly connected to the bottom of the damping slide. A top arc seat is fixedly installed on the base. The top arc seat has symmetrical arc grooves on both sides of its top. Arc positioning guides are fixedly installed on the inner walls of both sides of the arc grooves by bolts. A bottom arc seat is provided on the top of the top arc seat, and the bottom arc surface of the bottom arc seat is rotatably engaged with the top arc surface of the top arc seat. Arc platforms are symmetrically provided on both sides of the bottom of the bottom arc seat, and the arc platforms are used in conjunction with the arc grooves. Arc mating strips are fixedly installed on both sides of the arc platforms. The arc mating strips are located in the corresponding arc positioning guides and are rotatably connected to the corresponding arc positioning guides.

[0009] Optionally, a central groove is provided in the middle of the top surface of the top arc seat, a screw is rotatably connected to the inner wall of the central groove, a motor is fixedly installed on the outer wall of the top arc seat, and the output end of the motor is fixedly connected to the end wall of the screw. A threaded base is engaged on the screw, and the threaded base is slidably connected to the inner wall of the central groove. A clamp is fixedly installed on the threaded base.

[0010] Optionally, the bottom of the bottom arc seat has a central groove two, which is aligned with the central groove one. A square slot is provided at the center of the top of the bottom arc seat. A hanging seat is fixedly installed on the inner wall of the square slot by bolts. The hanging seat and the clamp are both located in the central groove two. A guide roller is fixedly installed on the bottom inner wall of the hanging seat. The guide roller is located in the clamp and is in movable contact with the inner wall of the clamp.

[0011] Optionally, a clamping platform is fixedly installed on the top of the bottom arc seat. The clamping platform is located inside the inner water tank, and the outboard motor is installed on the clamping platform by means of a clamp.

[0012] Optionally, a worm gear is rotatably connected to the inner wall of the outer side of the positioning frame, a worm wheel is fixedly installed on the end wall of the rotating rod and meshes with the worm gear, and a second motor is fixedly installed on the outer wall of the positioning frame and the output end of the second motor is fixedly connected to the end wall of the worm gear.

[0013] Optionally, a salt box is fixedly installed on the outer wall of the inner water tank, a first pump body is fixedly installed at the bottom of the salt box, the salt box is filled with sea salt, the first pump body is connected to the sea salt inside the salt box, and a salt delivery pipe is fixedly installed at the output end of the first pump body, and the salt delivery pipe is connected to the inside of the inner water tank.

[0014] Optionally, a second pump body is fixedly installed on the bottom outer wall of the outer water tank, and the second pump body is connected to the inside of the outer water tank. A water supply pipe is fixedly installed at the output end of the second pump body, and the other end of the water supply pipe is connected to the inside of the inner water tank.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above scheme, by setting up a simulation component, the outboard motor is fixed on a clamping platform, and liquid water of appropriate working depth is injected into the inner water tank. At the same time, sea salt is supplied as needed to adjust the salinity of the liquid water. Then, the first deflection mechanism drives the outboard motor to deflect back and forth along the arc-shaped positioning guide rail, the worm gear assembly drives the outboard motor to sway left and right, and the damping slide achieves lateral displacement. The salinity in the inner water tank is maintained, stably simulating the marine navigation environment. During the test, the water splashed in the outer water tank is recovered by the second pump and returned to the inner water tank to maintain the continuous stability of the test environment, forming a multi-dimensional composite swaying scenario. This allows for testing of the outboard motor's power, seaworthiness, corrosion resistance, and other core indicators, obtaining test data that closely matches actual navigation conditions. This achieves accurate testing of the outboard motor under all working conditions and reduces the problem of test data distortion caused by single swaying and freshwater testing in traditional devices. Attached Figure Description

[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0018] Figure 1 A three-dimensional structural diagram of a test device for an outboard motor;

[0019] Figure 2 This is a schematic diagram of the assembly of the inner and outer water tanks;

[0020] Figure 3 This is a schematic diagram showing the installation of the water supply pipe and the inner water tank;

[0021] Figure 4 This is a schematic diagram of the simulated component structure;

[0022] Figure 5 This is a schematic diagram of the installation structure of the positioning frame and the inner water tank;

[0023] Figure 6 This is a schematic diagram of the installation structure of the first deflection mechanism and the positioning frame;

[0024] Figure 7 This is a schematic diagram of the installation structure of the first deflection mechanism and the damping slide.

[0025] Figure 8 This is a schematic diagram of the first deflection mechanism;

[0026] Figure 9 This is a schematic diagram of the structure of each component on the bottom arc seat;

[0027] Figure 10 This is a schematic diagram of the assembly of the bottom arc seat and the hanging seat;

[0028] Figure 11 This is a diagram showing the installation position of the hanger on the bottom arc seat;

[0029] Figure 12 This is an assembly diagram of the threaded base, clamp, and top arc seat;

[0030] Figure 13 This is a schematic diagram showing the deflection of the bottom and top arc seats;

[0031] Figure 14 This is a deflection section view of the bottom and top arc seats;

[0032] Figure 15 This is a deflected sectional view of the bottom and top arc seats.

[0033] Figure label:

[0034] The components include: simulation component 100, first deflection mechanism 110, base 111, top arc seat 112, arc groove 113, arc positioning guide rail 114, central groove one 115, screw 116, motor one 117, threaded base 118, clamp 119, bottom arc seat 120, arc platform 121, arc mating strip 122, central groove two 123, square slot 124, hanging seat 125, guide roller 126, clamp platform 130, damping slide 140, positioning frame 150, rotating rod 151, worm gear 152, worm 153, motor two 154, inner water tank 160, salt box 161, first pump body 162, salt conveying pipe 163, outer water tank 200, second pump body 210, and water conveying pipe 220.

[0035] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0036] The testing device for an outboard motor provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0037] like Figures 1 to 15 As shown, an embodiment of the present invention provides a testing device for an outboard motor, including a simulation component 100 and an outer water tank 200. The simulation component 100 is located inside the outer water tank 200, and the outboard motor can be installed inside the simulation component 100. The simulation component 100 can test the outboard motor. The simulation component 100 includes an inner water tank 160, which is sealed to the outer water tank 200 by a sealing strip. When the outboard motor is simulated in the inner water tank 160, liquid water will splash from the inner water tank 160 into the outer water tank 200. At this time, the sealing strip between the inner water tank 160 and the outer water tank 200 can prevent liquid leakage. A positioning frame 150 is fixedly installed on the top of the 60. A rotating rod 151 is rotatably connected to the inner wall of the middle part of the positioning frame 150. A damping slide 140 is slidably installed on the rotating rod 151. The connection between the damping slide 140 and the rotating rod 151 is damped, which can select whether there is relative displacement between the damping slide 140 and the rotating rod 151. At this time, the position of the outboard motor is adjusted by sliding the position of the damping slide 140 on the rotating rod 151. If it is necessary to simulate the propulsion action of the outboard motor, the damping in the damping slide 140 can be adjusted so that the outboard motor can move laterally on the rotating rod 151 when it is working. A first deflection mechanism 110 is installed at the bottom of the damping slide 140.

[0038] As one implementation method in this embodiment, such as Figures 8 to 13As shown, the first deflection mechanism 110 includes a base 111, which is fixedly connected to the bottom of the damping slide 140. A top arc seat 112 is fixedly installed on the base 111. Arc grooves 113 are symmetrically opened on both sides of the top of the top arc seat 112. Arc positioning guide rails 114 are fixedly installed on the inner walls of both sides of the arc grooves 113 by bolts. A bottom arc seat 120 is provided on the top of the top arc seat 112, and the bottom arc surface of the bottom arc seat 120 is rotatably engaged with the top arc surface of the top arc seat 112. The bottom sides of the bottom arc seat 120 are symmetrically arranged... There is an arc-shaped platform 121, which is used in conjunction with the arc-shaped groove 113. Arc-shaped mating strips 122 are fixedly installed on both sides of the arc-shaped platform 121. The arc-shaped mating strips 122 are located in the corresponding arc-shaped positioning guide rails 114 and are rotatably connected to the corresponding arc-shaped positioning guide rails 114. The arc-shaped positioning guide rails 114 can limit the arc-shaped mating strips 122 to prevent the bottom arc seat 120 from separating from the top arc seat 112. At the same time, when the bottom arc seat 120 moves, it can guide the movement of the bottom arc seat 120.

[0039] In this embodiment, as Figures 8 to 12 , Figure 14 and Figure 15As shown, a central groove 115 is provided in the middle of the top surface of the top arc seat 112. A screw 116 is rotatably connected to the inner wall of the central groove 115. A motor 117 is fixedly installed on the outer wall of the top arc seat 112, and the output end of the motor 117 is fixedly connected to the end wall of the screw 116. A threaded base 118 is engaged on the screw 116, and the threaded base 118 is slidably connected to the inner wall of the central groove 115. The central groove 115 limits the movement of the threaded base 118. A clamping seat 119 is fixedly installed on the 18. A central groove 123 is formed at the bottom of the bottom arc seat 120, and this central groove 123 is aligned with the central groove 115. A square slot 124 is formed at the center of the top of the bottom arc seat 120. A hanging seat 125 is fixedly installed on the inner wall of the square slot 124 by bolts. Both the hanging seat 125 and the clamping seat 119 are located within the central groove 123. A guide roller 126 is fixedly installed on the inner wall of the bottom of the hanging seat 125, and the guide roller 126 is located within the clamping seat 119. The screw 116 moves in contact with the inner wall of the clamp 119. In this invention, the output shaft of the drive motor 117 drives the screw 116 to mesh with the threaded base 118. Under the limiting action of the central groove 115, the threaded base 118 drives the clamp 119 to move, so that the clamp 119 can push the guide roller 126. Under the guidance of the arc-shaped positioning guide rail 114, the bottom arc seat 120 deflects on the top arc seat 112, thereby driving the bottom arc seat 120 to move. When the fixed clamping platform 130 deflects, the outboard motor on the clamping platform 130 sways back and forth. In particular, when the clamping seat 119 pushes the guide roller 126 to drive the bottom arc seat 120 to swing, the guide roller 126 can reciprocate within the clamping seat 119. When the bottom arc seat 120 and the top arc seat 112 have the largest deflection angle, the guide roller 126 is located at the outermost end of the clamping seat 119. When the bottom arc seat 120 and the top arc seat 112 coincide, the guide roller 126 is located at the innermost end of the clamping seat 119.

[0040] In this embodiment, as Figure 3 and Figure 6 As shown, a clamping platform 130 is fixedly installed on the top of the bottom arc seat 120. The clamping platform 130 is located inside the inner water tank 160, and the outboard motor is installed on the clamping platform 130 by means of a clamp.

[0041] As one implementation method in this embodiment, such as Figure 6As shown, a worm gear 153 is rotatably connected to the inner wall of the outer side of the positioning frame 150, and a worm wheel 152 is fixedly installed on the end wall of the rotating rod 151, with the worm wheel 152 meshing with the worm gear 153. A second motor 154 is fixedly installed on the outer wall of the positioning frame 150, and the output end of the second motor 154 is fixedly connected to the end wall of the worm gear 153. In this invention, when it is necessary to simulate the outboard motor swaying left and right in seawater, the output shaft of the second motor 154 drives the worm gear 153 to mesh with the worm wheel 152, thereby causing the rotating rod 151 to rotate, which in turn causes the damping slide 140 to swing, thereby causing the outboard motor to sway left and right.

[0042] In this embodiment, as Figures 1 to 4 As shown, a salt box 161 is fixedly installed on the outer wall of the inner water tank 160, and a first pump body 162 is fixedly installed at the bottom of the salt box 161. The salt box 161 is filled with sea salt, and the first pump body 162 can transport the sea salt in the salt box 161 to the inner water tank 160, thereby simulating the working environment of the outboard motor propulsion in seawater. Different amounts of sea salt can be transported for different models of outboard motors to achieve various environmental effects. The first pump body 162 is connected to the sea salt inside the salt box 161, and a salt delivery pipe 163 is fixedly installed at the output end of the first pump body 162, and the salt delivery pipe 163 is connected to the inside of the inner water tank 160. A second pump body 210 is fixedly installed on the bottom outer wall of the outer water tank 200, and the second pump body 210 is connected to the inside of the outer water tank 200. A water delivery pipe 220 is fixedly installed at the output end of the second pump body 210, and the water delivery pipe 220 is connected to the outer water tank 200. The other end of pipe 220 is connected to the interior of the inner water tank 160. The second pump body 210 can re-input the liquid splashed out of the outer water tank 200 into the inner water tank 160 to ensure environmental stability. In this invention, liquid water is added to the inner water tank 160 according to the working water depth of the outboard motor to meet the working depth of the outboard motor. The first pump body 162 is driven to input the sea salt in the salt box 161 into the inner water tank 160 through the salt delivery pipe 163, thereby simulating the working environment of the outboard motor in seawater. In particular, during the operation of the outboard motor, some liquid will splash out from the inner water tank 160 into the outer water tank 200. At this time, the second pump body 210 is driven to re-input the water splashed into the outer water tank 200 into the inner water tank 160 through the water delivery pipe 220 to ensure that the inner water tank 160 always has a sufficient water supply.

[0043] The working principle of the technical solution provided by this invention is as follows: The outboard motor is held on the clamping platform 130 by the clamps on the outboard motor. Liquid water is added to the inner water tank 160 according to the working water depth of the outboard motor to meet the working depth of the outboard motor. The working position of the outboard motor is adjusted by the position of the sliding damping slide 140 on the rotating rod 151. If it is necessary to simulate the propulsion action of the outboard motor, the damping in the damping slide 140 can be adjusted so that the outboard motor can rotate during operation. The rod 151 moves laterally, which then drives the first pump body 162 to input sea salt from the salt box 161 into the inner water tank 160 through the salt delivery pipe 163, thereby simulating the working environment of the outboard motor in seawater. Since the ship will sway during navigation, the outboard motor will also sway. To simulate this swaying effect, the output shaft of the drive motor 117 drives the screw 116 to mesh with the threaded base 118. Under the limiting action of the central slot 115, This causes the threaded base 118 to move the clamp 119, which in turn pushes the guide roller 126. Under the guidance of the arc-shaped positioning guide rail 114, the bottom arc seat 120 deflects on the top arc seat 112, thereby causing the clamping platform 130, which is fixed to the bottom arc seat 120, to deflect as well. This causes the outboard motor on the clamping platform 130 to sway back and forth. The output shaft of the drive motor 154 drives the worm gear 153 to mesh with the worm wheel 152, thereby driving the rotating rod 15... When the rotation occurs, the rotating rod 151 drives the damping slide 140 to swing, thereby causing the outboard motor to sway left and right, simulating the swaying effect of the outboard motor when the ship is sailing. During the operation of the outboard motor, some liquid will splash out from the inner water tank 160 into the outer water tank 200. At this time, the second pump body 210 is driven to re-input the water splashed into the outer water tank 200 into the inner water tank 160 through the water supply pipe 220, so as to ensure that the inner water tank 160 always has a sufficient water supply.

[0044] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0045] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A testing device for an outboard engine, comprising a simulation assembly (100) and an outer tank (200), the simulation assembly (100) being located inside the outer tank (200) and the outboard engine being mountable inside the simulation assembly (100), the simulation assembly (100) being capable of testing the outboard engine, characterized in that, The simulation assembly (100) comprises an inner water tank (160), the inner water tank (160) is sealed and clamped with an outer water tank (200) through a sealing strip, a positioning frame (150) is fixedly installed on the top of the inner water tank (160), a rotating rod (151) is rotatably connected to the inner wall of the middle part of the positioning frame (150), a damping sliding table (140) is slidably installed on the rotating rod (151), and a first deflection mechanism (110) is installed at the bottom of the damping sliding table (140); The first deflection mechanism (110) comprises a base (111), the base (111) is fixedly connected with the bottom of the damping sliding table (140), a top arc seat (112) is fixedly installed on the base (111), arc-shaped grooves (113) are symmetrically formed on the top of the two sides of the top arc seat (112), arc-shaped positioning guide rails (114) are fixedly installed on the inner walls of the two sides of the arc-shaped grooves (113) through bolts, a bottom arc seat (120) is arranged on the top of the top arc seat (112), the bottom arc surface of the bottom arc seat (120) is rotatably connected with the top arc surface of the top arc seat (112), arc-shaped tables (121) are symmetrically arranged on the bottom of the two sides of the bottom arc seat (120), and the arc-shaped tables (121) are used in cooperation with the arc-shaped grooves (113), arc-shaped matching strips (122) are fixedly installed on the two side walls of the arc-shaped tables (121), the arc-shaped matching strips (122) are located in the corresponding arc-shaped positioning guide rails (114), and the arc-shaped matching strips (122) are rotatably connected with the corresponding arc-shaped positioning guide rails (114); The inner wall of the inner water tank (160) is fixedly installed with a salt box (161), the bottom of the salt box (161) is fixedly installed with a first pump body (162), sea salt is filled in the salt box (161), the first pump body (162) is communicated with the sea salt in the salt box (161), and the output end of the first pump body (162) is fixedly installed with a salt conveying pipe (163) communicated with the inside of the inner water tank (160); The bottom outer wall of the outer water tank (200) is fixedly installed with a second pump body (210) communicated with the inside of the outer water tank (200), and the output end of the second pump body (210) is fixedly installed with a water conveying pipe (220) communicated with the inside of the inner water tank (160); Liquid water is added into the inner water tank (160), the first pump body (162) is driven to input the sea salt in the salt box (161) into the inner water tank (160) through the salt conveying pipe (163), the working environment of the outboard engine in seawater is simulated, the second pump body (210) is driven to input the water splashed into the outer water tank (200) into the inner water tank (160) through the water conveying pipe (220), and the water source in the inner water tank (160) is ensured to be sufficient.

2. A testing device for an outboard motor according to claim 1, characterized in that The top arc seat (112) top surface middle part is provided with a middle groove one (115), the inner wall of the middle groove one (115) is rotatably connected with a screw rod (116), the outer wall of the top arc seat (112) is fixedly installed with a motor one (117), and the output end of the motor one (117) is fixedly connected with the end wall of the screw rod (116), the screw rod (116) is meshed with a threaded base (118), and the threaded base (118) is slidably connected with the inner wall of the middle groove one (115), and the threaded base (118) is fixedly installed with a clamp seat (119).

3. A testing device for an outboard motor according to claim 2, characterized in that The bottom arc seat (120) bottom is provided with a middle groove two (123), and the middle groove two (123) is aligned with the middle groove one (115), the top center of the bottom arc seat (120) is provided with a square clamping groove (124), the inner wall of the square clamping groove (124) is fixedly installed with a hanging seat (125) through bolts, the hanging seat (125) and the clamp seat (119) are located in the middle groove two (123), the bottom inner wall of the hanging seat (125) is fixedly installed with a guide roller (126), the guide roller (126) is located in the clamp seat (119), and is in movable contact with the inner wall of the clamp seat (119).

4. A testing device for an outboard motor according to claim 1, characterized in that The bottom arc seat (120) top is fixedly installed with a clamp table (130), the clamp table (130) is located in the inner water tank (160), and the outboard engine is installed on the clamp table (130) through a clamp.

5. A testing device for an outboard motor according to claim 1, wherein The outer side inner wall of the positioning frame (150) is rotatably connected with a worm (153), the end wall of the rotating rod (151) is fixedly installed with a worm wheel (152), and the worm wheel (152) is engaged with the worm (153), the outer side wall of the positioning frame (150) is fixedly installed with a motor two (154), and the output end of the motor two (154) is fixedly connected with the end wall of the worm (153).

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