Seeding and fertilizing machine driven by double motors
The dual-electric motor driven seeding and fertilizing machine addresses precision and uniformity issues in traditional equipment by using a dual-motor system for precise control and uniform fertilizer distribution, enhancing operational efficiency and crop growth.
Patent Information
- Application Number
- CN202510579719.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2025-07-15
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing sowing and fertilization equipment has problems such as uneven fertilization, lumpy fertilizers, and inaccurate sowing mouth adjustment, which affects crop growth.
It adopts dual motor drive, through the gear box and transmission box design, combined with the eccentric wheel and fertilizer spreading wheel structure, realizes automatic stirring and uniform spreading of fertilizers, and is equipped with adjustable fertilizer application ports and seeding ports to ensure uniform distribution of fertilizers and seeds.
It improves the efficiency and accuracy of fertilization and sowing, avoids brittle fertilizers, ensures uniform distribution of chemical fertilizers, and promotes balanced growth of crops.
Smart Images
Figure CN120304101A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of fertilizer applicators, and specifically to a seeding and fertilizing machine driven by two motors. Background Art
[0002] In agricultural production, seeding and fertilizing are important links, and their efficiency and accuracy have a significant impact on the yield and quality of crops. At present, there are many deficiencies in traditional seeding and fertilizing equipment. The common fertilizing method of agricultural seeding machines is that when a tractor is running, the wheels drive gears and chains, and then drive the fertilizing device in the fertilizer box to apply fertilizer. During the fertilizing process, the flatness of the land and the tightness of the gears and chains will affect the fertilizing effect. Moreover, the existing fertilizer boxes do not have a mixing device, and it is often necessary to manually stir the fertilizer for mixing during operation, which is very inconvenient.
[0003] At the same time, the adjustment of the fertilizer application port and seeding port of the existing equipment is not precise enough, and it is impossible to accurately control the opening size according to the fertilizer requirements and seed characteristics of different crops, resulting in uneven fertilization and affecting the growth of crops. Moreover, during the storage and transportation of fertilizers, caking is likely to occur, and the existing equipment often lacks effective measures to break up the lumps, so that the caked fertilizers enter the fertilizing system, affecting the fertilizing effect. In addition, the fertilizer spreading devices of some equipment are not reasonably designed and cannot evenly spread the chemical fertilizers, resulting in uneven distribution of fertilizers in the field and affecting the overall growth of crops. Summary of the Invention
[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a seeding and fertilizing machine driven by two motors.
[0005] The technical solution adopted by the present invention to solve its technical problems is: a seeding and fertilizing machine driven by two motors, including a fertilizer and seeding box. A support member is fixed on the side wall surface of the fertilizer and seeding box. A strip-shaped chute is formed in the support member on one side. A strip-shaped slider is slidably connected in the strip-shaped chute. A transmission box is fixed inside the strip-shaped slider. One end of the strip-shaped slider passing through the strip-shaped chute is bolted to a fixing member through a screw. An opening is provided on the side wall of the transmission box, and a box cover is fixed on the opening. A driving member is arranged inside the transmission box. A fertilizer spreading wheel is fixed at the top of the driving member. A fertilizer conveying member is arranged above the fertilizer spreading wheel;
[0006] An eccentric wheel is arranged inside the mounting frame. The eccentric wheel is fixedly connected to the gear box and the conveying wheel on the right side. A first driving rod is rotatably connected inside the eccentric wheel. The top of the first driving rod is rotatably connected to a second driving rod. A transmission member is arranged at the top of the second driving rod. A turntable is rotatably connected to the top of the transmission member. A striking member is fixed at one end of the turntable passing through the fertilizer and seeding box. A protective cover is arranged outside the transmission member.
[0007] Furthermore, the driving member includes a driving wheel rotatably disposed on one side inside the transmission case. A plurality of driven wheels are rotatably connected at equal intervals at the other end of the transmission case. The driven wheels are connected to the driving wheel by a transmission belt. A second driving motor is fixed to the top shaft of the driving wheel, and the top shaft of the driven wheel is fixedly connected to the fertilizer spreading wheel.
[0008] Furthermore, the fertilizer conveying member includes a housing disposed outside the fertilizer spreading wheel. The housing is fixedly connected to the transmission case. An arc-shaped groove is formed inside the top of the housing. A conveying pipe is inserted into the arc-shaped groove. A connecting hose is sleeved on the top of the conveying pipe, and the other end of the connecting hose is connected to the fertilizer application port.
[0009] Furthermore, the fertilizer spreading wheel is a conical wheel. A plurality of inclined plates are fixedly arranged on the fertilizer spreading wheel along the inclined surface. A gap is formed between the top of the fertilizer spreading wheel and the conveying pipe.
[0010] Furthermore, the transmission member includes a limiting bracket disposed on the side wall surface of the fertilizer and seed sowing box. The limiting bracket is slidably connected to the second driving rod. A rotating member is rotatably connected to the outer wall of the limiting bracket. One end of the rotating member is rotatably connected to the second driving frame. The other end of the rotating member is rotatably connected to a connecting member. The top of the connecting member is rotatably connected to the turntable.
[0011] Furthermore, a sleeve is provided at the connection between the second driving rod and the limiting bracket, and the sleeve is in fit with the outer wall of the second driving rod.
[0012] Furthermore, a strip-shaped groove is formed at the connection between the rotating member and the second driving rod. A slider is slidably connected inside the strip-shaped groove. The slider is fixedly connected to the second driving rod. The rotating member and the connecting member are connected by a pin shaft.
[0013] Furthermore, the connecting member is arranged in an "L" shape. A strip-shaped chute is formed at the top of the connecting member, and the strip-shaped chute is connected to the convex block on the turntable.
[0014] The beneficial effects of the present invention are as follows:
[0015] 1. Double-motor drive for efficient operation: Two first driving motors are provided to drive the conveying wheel to rotate through the gearbox to realize the fertilizer application and seeding work. At the same time, a second driving motor is provided to drive the fertilizer spreading wheel to rotate through the driving wheel, driven wheels and transmission belt. The double-motor drive improves the power and working efficiency of the equipment, can complete the seeding and fertilizing tasks more quickly and stably, can avoid the uneven fertilization caused by uneven land or loose chain, and makes the fertilization more accurate. Moreover, automatic mixing of fertilizers can be carried out, saving time and effort.
[0016] 2. Flexible transmission box adjustment: The position of the transmission box is adjusted by sliding the strip-shaped slider in the strip-shaped chute of the support member and fixed by the fixing member, which is convenient for flexibly adjusting the positions of components such as the fertilizer spreading wheel according to actual operation requirements, improving the adaptability and versatility of the equipment.
[0017] 3. Stable fertilizer transportation: The outer shell of the fertilizer conveying member is fixed to the transmission box by screws, and the arc-shaped groove at its top is adapted to the shape of the conveying pipe, which can better fix the conveying pipe and prevent it from shaking during operation. The conveying pipe is made of plastic pipe with good flexibility, and the connecting hose is made of rubber material with good elasticity and sealing performance, ensuring that the fertilizer can be smoothly transported from the fertilizing port to the fertilizer spreading wheel and guaranteeing the stability and reliability of the fertilizer transportation process.
[0018] 4. Uniform fertilizer spreading: The fertilizer spreading wheel is a conical wheel and multiple inclined plates are fixed obliquely along the inclined surface. The gap formed with the conveying pipe ensures that the fertilizer enters the fertilizer spreading wheel at an appropriate speed and flow rate. When the fertilizer spreading wheel rotates, the fertilizer is evenly scattered by the inclined plates, making the fertilizer more evenly distributed in the farmland. With subsequent irrigation, the fertilizer components will penetrate around the seeds, improving the fertilizer utilization rate and promoting the balanced growth of crops.
[0019] 5. Preventing fertilizer caking from affecting operation: An eccentric wheel is arranged inside the mounting frame and driven by a gearbox to perform eccentric motion, driving the first driving rod and the second driving rod to move up and down. Then, through the transmission member, the turntable is driven to rotate, making the striking member swing in the fertilizer box to break up the caked fertilizer, avoiding the influence of fertilizer caking on the fertilizing effect and ensuring the smoothness and uniformity of fertilization. Brief Description of the Drawings
[0020] Figure 1 is a schematic diagram of the present invention.
[0021] Figure 2 is Figure 1 the detailed drawing of the back connection structure of
[0022] Figure 3 is Figure 1 the detailed drawing of the sectional connection structure of the transmission box in
[0023] Figure 4 is Figure 1 the detailed drawing of the front sectional connection structure of
[0024] Figure 5 is Figure 4 the detailed drawing of the enlarged connection structure at position A in
[0025] Figure 6 is Figure 1 the detailed drawing of the right sectional connection structure of the transmission box in
[0026] Figure 7 isFigure 6 Detail view of the top-down connection structure
[0027] Figure 8 is Figure 1 Detail view of the sectional connection structure of the protective cover in
[0028] Figure 9 is Figure 8 Detail view of the right-side sectional connection structure of
[0029] Figure 10 is Figure 1 Detail view of the top-down connection structure of
[0030] Explanation of reference numerals: 1. Fertilizer and seeding box, 2. Fertilizer inlet, 3. Seeding inlet, 4. First driving motor, 5. Gearbox, 6. Mounting frame, 7. Conveyor wheel, 8. Regulator, 9. Support frame, 10. Transmission box, 11. Fixing member, 12. Box cover, 13. Driving wheel, 14. Driven wheel, 15. Transmission belt, 16. Second driving motor, 17. Fertilizer spreading wheel, 18. Outer shell, 19. Delivery pipe, 20. Connecting hose, 21. Eccentric wheel, 22. First driving rod, 23. Second driving rod, 24. Limit bracket, 25. Rotating member, 26. Connecting member, 27. Turntable, 28. Striking member, 29. Protective cover. Specific embodiments
[0031] The following further elaborates the present invention in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the application.
[0032] See Figures 1 - 10 This is a schematic structural view of the present invention. A seeding and fertilizing machine driven by a dual motor includes a fertilizer and seeding box 1. On both sides of the bottom end of the fertilizer and seeding box 1, a plurality of fertilizer inlets 2 and seeding inlets 3 are respectively arranged. As the core load-bearing component of the entire device, the fertilizer and seeding box 1 is made of a high-strength and corrosion-resistant alloy material, having good compressive resistance and durability, and being able to adapt to various complex farmland operation environments. Its internal space is reasonably divided into a fertilizer application area and a seeding area to ensure that the storage and transportation of chemical fertilizers and seeds do not interfere with each other. On both sides of the bottom end of the fertilizer and seeding box 1, a plurality of fertilizer inlets 2 and seeding inlets 3 are respectively arranged in a regular pattern, distributed at equal intervals in a straight line, and can perform precise fertilization according to different fertilizer requirements. The shape of the seeding inlet 3 is adapted to the shape of the seeds to ensure that the seeds can fall smoothly and be sown and fertilized;
[0033] There are two first drive motors 4 provided on the inner wall of the fertilizing and seeding box 1. The first drive motor 4 drives the conveying wheel 7 to rotate through a gearbox 5. When the conveying wheel 7 rotates in the seeding opening 3 and the fertilizing opening 2, fertilizing and seeding work can be carried out. The output end of the first drive motor 4 is fixed with a gearbox 5. The right gearbox 5 is connected to the fertilizing and seeding box 1 through a mounting bracket 6. The output end of the gearbox 5 is fixed with a conveying wheel 7. The conveying wheel 7 is rotatably arranged inside the fertilizing opening 2 and the seeding opening 3. On the other side of the fertilizing and seeding box 1, there is an opening adjuster 8;
[0034] On the side wall surface of the fertilizing and seeding box 1, there is a support member 9 fixed. One side of the support member 9 is hollow to form a strip-shaped chute. A strip-shaped slider is slidably connected inside the strip-shaped chute. The inner wall of the strip-shaped chute is processed by high-precision grinding, and the surface is smooth to reduce the frictional resistance with the strip-shaped slider. The inner side of the strip-shaped slider is fixed with a transmission box 10. The transmission box 10 adjusts its position through the strip-shaped slider. One end of the strip-shaped slider passing through the strip-shaped chute is bolted to a fixing member 11 through a screw. After the transmission box 10 adjusts its position, it is fixed by the fixing member 11. There is an opening on the side wall of the transmission box 10, and a box cover 12 is fixed on the opening. The box cover 12 can be opened from the transmission box 10, and the driving parts inside the transmission box 10 can be repaired. There is a driving part inside the transmission box 10. The driving part can drive the fertilizer spreading wheel 17 to rotate. The top end of the driving part is fixed with a fertilizer spreading wheel 17. Above the fertilizer spreading wheel 17, there is a fertilizer conveying part. The driving part includes a driving wheel 13. The driving wheel 13 is rotatably arranged on one side inside the transmission box 10. At the other end of the transmission box 10, a plurality of driven wheels 14 are rotatably connected at equal intervals. The driven wheels 14 are connected to the driving wheel 13 through a transmission belt 15. The top end rotating shaft of the driving wheel 13 is fixed with a second drive motor 16. The second drive motor 16 drives the driving wheel 13 to rotate through the output end. During the rotation of the driving wheel 13, the driven wheels 14 are driven to rotate through the transmission belt 15, and the fertilizer spreading wheel 17 is driven to rotate through the driven wheels 14. The top end rotating shaft of the driven wheel 14 is fixedly connected to the fertilizer spreading wheel 17.
[0035] The fertilizer conveying part includes a housing 18. The housing 18 is arranged outside the fertilizer spreading wheel 17. The housing 18 is fixedly connected to the transmission box 10. The housing 18 and the transmission box 10 are fixedly connected by a plurality of screws. An arc-shaped groove is formed inside the top end of the housing 18. A conveying pipe 19 is inserted into the arc-shaped groove. The design of the arc-shaped groove is adapted to the shape of the conveying pipe 19, which can better fix the conveying pipe 19 and prevent it from shaking during operation. A connecting hose 20 is sleeved on the top end of the conveying pipe 19. The other end of the connecting hose 20 is connected to the fertilizing opening 2. The conveying pipe 19 is made of plastic pipe material, which has good flexibility and corrosion resistance. The connecting hose 20 is made of rubber material, which has good stretchability and sealing performance, ensuring that the fertilizer can be smoothly conveyed from the fertilizing opening 2 to the fertilizer spreading wheel 17.
[0036] The fertilizer spreading wheel 17 is a conical wheel. A plurality of inclined plates are fixedly arranged on the fertilizer spreading wheel 17 along the inclined plane. A gap is formed between the top end of the fertilizer spreading wheel 17 and the conveying pipe 19. When the fertilizer spreading wheel 17 rotates, the inclined plates can evenly sprinkle the chemical fertilizer. The gap between the fertilizer spreading wheel 17 and the conveying pipe 19 ensures that the chemical fertilizer can enter the fertilizer spreading wheel 17 from the conveying pipe 19 at an appropriate speed and flow rate to achieve fertilizer spreading.
[0037] An eccentric wheel 21 is arranged inside the mounting frame 6. The eccentric wheel 21 is fixedly connected to the gearbox 5 and the conveying wheel 7 on the right side. Driven by the gearbox 5, the eccentric wheel 21 can perform eccentric motion. A first driving rod 22 is rotatably connected inside the eccentric wheel 21. The top end of the first driving rod 22 is rotatably connected to a second driving rod 23. A transmission member is arranged at the top end of the second driving rod 23. The second driving rod 23 drives the turntable 27 to rotate reciprocally through the transmission member. When the turntable 27 rotates, it drives the striking member 28 to swing in the fertilizer box to break up the caked chemical fertilizer. The top end of the transmission member is rotatably connected to the turntable 27. One end of the turntable 27 passing through the fertilizer and seeding box 1 is fixedly provided with the striking member 28. The striking member 28 is a rectangular frame, and a plurality of loosening rods are fixed inside the frame. A protective cover 29 is arranged outside the transmission member to protect the transmission member.
[0038] The transmission member includes a limit bracket 24. The limit bracket 24 is arranged on the side wall surface of the fertilizer and seeding box 1, and the limit bracket 24 is slidably connected to the second driving rod 23. When the second driving rod 23 is driven by the first driving rod 22, it moves upward in the limit bracket 24. A rotating member 25 is rotatably connected to the outer wall of the limit bracket 24. A strip-shaped groove is formed at the connection between the rotating member 25 and the second driving rod 23. When the second driving rod 23 moves up and down, it drives the rotating member 25 to swing on the limit bracket 24. Through the swing of the rotating member 25, the turntable 27 is driven to rotate through the connecting member 26. A slider is slidably connected inside the strip-shaped groove, and the slider is fixedly connected to the second driving rod 23. The rotating member 25 and the connecting member 26 are connected by a pin shaft. One end of the rotating member 25 is rotatably connected to the second driving frame 23, and the other end of the rotating member 25 is rotatably connected to the connecting member 26. The top end of the connecting member 26 is rotatably connected to the turntable 27. A sleeve is arranged at the connection between the second driving rod 23 and the limit bracket 24, and the sleeve is in contact with the outer wall of the second driving rod 23. The connecting member 26 is arranged in an "L" shape, and a strip-shaped chute is formed at the top end of the connecting member 26, and the strip-shaped chute is connected to the convex block on the turntable 27.
[0039] When the present invention is in use:
[0040] First, the seeds and fertilizers are stored in the sowing area and fertilization area of the fertilizer seeding box 1 respectively, and the conveying wheel 7 is driven by the first drive motor 4 and the gear box 5 to start rotating. When the conveying wheel 7 rotates in the sowing port 3, the seeds fall evenly from the sowing area through the sowing port 3 to the farmland by their own gravity and the friction or pulling force generated by the rotation of the conveying wheel 7, completing the sowing operation. While sowing, the conveying wheel 7 rotates in the fertilization port 2 at the same time. Under the action of gravity and the conveying wheel 7, the fertilizer enters the conveying pipe 19 from the fertilization area through the fertilization port 2 through the connecting hose 20. When entering the conveying pipe 19, the second drive motor 16 is started, and its output end drives the driving wheel 13 to rotate. During the rotation process, the driving wheel 13 drives the driven wheel 14 to rotate synchronously through the transmission belt 15. The top rotating shaft of the driven wheel 14 is fixedly connected to the fertilizer spreading wheel 17, thereby driving the fertilizer spreading wheel 17 to rotate. When the fertilizer spreading wheel 17 rotates, the inclined plate evenly throws the fertilizer dropped from the conveying pipe 19, so that the fertilizer is more evenly distributed in the farmland, thereby improving the fertilization effect.
[0041] If the amount of fertilizer and seeding needs to be adjusted, the opening adjuster 8 located on the other side of the fertilizer and seeding box 1 can be operated. The opening adjuster 8 is mainly composed of an adjusting knob, an adjusting screw and an adjusting plate. By rotating the adjusting knob, the adjusting screw is driven to rotate. The rotation of the adjusting screw causes the adjusting plate to move up and down at the fertilizer port 2 and the seeding port 3. When the adjusting plate moves upward, the openings of the fertilizer port 2 and the seeding port 3 increase, and the corresponding fertilizer and seeding amounts increase. Conversely, when the adjusting plate moves downward, the opening decreases, and the fertilizer and seeding amounts decrease, thereby realizing the adjustment of the fertilizer and seeding amounts.
[0042] When the gear box 5 is driven by the first drive motor 4 to operate, the eccentric wheel 21 performs eccentric motion accordingly. During the rotation of the eccentric wheel 21, the second drive rod 23 is driven to move up and down through the first drive rod 22. When the second drive rod 23 is driven by the first drive rod 22, it moves upward in the limit bracket 24. The outer wall of the limit bracket 24 is rotatably connected with a rotating member 25. A strip groove is provided at the connection between the rotating member 25 and the second drive rod 23. When the second drive rod 23 moves up and down, the rotating member 25 is driven to swing on the limit bracket 24. During the swinging process, the rotating member 25 drives the turntable 27 to rotate through the connecting member 26. When the turntable 27 rotates, it drives the striking member 28 to swing in the fertilizer box. For the agglomerated fertilizer, the swing of the striking member 28 can break it up, ensuring that the fertilizer can smoothly pass through the fertilizer port 2 for fertilization operation. A protective cover 29 is provided on the outer side of the transmission member to protect the transmission member and prevent it from being interfered or damaged by external factors.
Claims
1. A seeding and fertilizing machine driven by two motors, comprising a fertilizing and seeding box (1), characterized in that, A support member (9) is fixed on the side wall surface of the fertilizing and seeding box (1). A strip-shaped chute is formed in the interior of one side of the support member (9). A strip-shaped slider is slidably connected in the strip-shaped chute. A transmission box (10) is fixed on the inner side of the strip-shaped slider. One end of the strip-shaped slider passing through the strip-shaped chute is bolted to a fixing member (11) by a screw. An opening is provided on the side wall of the transmission box (10), and a box cover (12) is fixed on the opening. A driving member is arranged inside the transmission box (10), and a fertilizer spreading wheel (17) is fixed at the top end of the driving member. A fertilizer conveying member is arranged above the fertilizer spreading wheel (17). An eccentric wheel (21) is arranged inside the mounting frame (6). The eccentric wheel (21) is fixedly connected to the gear box (5) and the conveying wheel (7) on the right side. A first driving rod (22) is rotatably connected inside the eccentric wheel (21). The top end of the first driving rod (22) is rotatably connected to a second driving rod (23). A transmission member is arranged at the top end of the second driving rod (23). The top end of the transmission member is rotatably connected to a turntable (27). One end of the turntable (27) passing through the fertilizing and seeding box (1) is fixed with a striking member (28). A protective cover (29) is arranged outside the transmission member.
2. The seeding and fertilizing machine driven by two motors according to claim 1, characterized in that: The driving member includes a driving wheel (13). The driving wheel (13) is rotatably arranged on one side inside the transmission box (10). A plurality of driven wheels (14) are rotatably connected at equal intervals at the other end of the transmission box (10). The driven wheels (14) are connected to the driving wheel (13) by a transmission belt (15). A second driving motor (16) is fixed at the shaft at the top end of the driving wheel (13). The shaft at the top end of the driven wheel (14) is fixedly connected to the fertilizer spreading wheel (17).
3. A double-motor-driven seeding and fertilizing machine according to claim 1, characterized in that: The fertilizer conveying member includes a housing (18). The housing (18) is arranged outside the fertilizer spreading wheel (17). The housing (18) is fixedly connected to the transmission box (10). An arc-shaped groove is formed inside the top end of the housing (18). A conveying pipe (19) is inserted into the arc-shaped groove. A connecting hose (20) is sleeved at the top end of the conveying pipe (19). The other end of the connecting hose (20) is connected to a fertilizing port (2).
4. The seeding and fertilizing machine driven by two motors according to claim 3, wherein: The fertilizer spreading wheel (17) is a conical wheel. A plurality of inclined plates are fixedly arranged on the fertilizer spreading wheel (17) along the inclined surface. A gap is formed between the top end of the fertilizer spreading wheel (17) and the conveying pipe (19).
5. A double-motor-driven seeding and fertilizing machine according to claim 1, characterized in that: The transmission member includes a limiting bracket (24). The limiting bracket (24) is arranged on the side wall surface of the fertilizing and seeding box (1), and the limiting bracket (24) is slidably connected to the second driving rod (23). A rotating member (25) is rotatably connected to the outer wall of the limiting bracket (24). One end of the rotating member (25) is rotatably connected to the second driving rod (23). The other end of the rotating member (25) is rotatably connected to a connecting member (26). The top end of the connecting member (26) is rotatably connected to the turntable (27).
6. The seeding and fertilizing machine driven by two motors according to claim 5, characterized in that: A sleeve is provided at the connection between the second driving rod (23) and the limit bracket (24), and the sleeve is in contact with the outer wall of the second driving rod (23).
7. A double-motor-driven seeding and fertilizing machine according to claim 5, characterized in that: A strip-shaped groove is formed at the connection between the rotating member (25) and the second driving rod (23). A slider is slidably connected inside the strip-shaped groove. The slider is fixedly connected to the second driving rod (23), and the rotating member (25) is connected to the connecting member (26) by a pin shaft.
8. A seeding and fertilizing machine driven by a dual motor according to claim 5, characterized in that: The connecting member (26) is arranged in an "L" shape. A strip-shaped sliding groove is formed at the top of the connecting member (26), and the strip-shaped sliding groove is connected to the convex block on the turntable (27).