Multifunctional rice combine harvesting experiment machine

Abstract

The embodiment of the invention discloses a multifunctional rice combine harvesting experiment machine, and relates to the technical field of analogue simulation tools. The multifunctional rice combine harvesting experiment machine comprises a rack, a header mechanism, a connecting frame, a transmission mechanism, a first driving mechanism, a first power unit, a roller screen mechanism, a second driving mechanism and a shaking screen mechanism, the header mechanism is connected with the connecting frame, the transmission mechanism is connected with the connecting frame, the connecting frame is rotationally connected with the rack, the first power unit is rotationally connected to the rack, and the second power unit is rotationally connected to the shaking screen mechanism. The first driving mechanism is installed on the machine frame and used for driving the connecting frame to drive the header mechanism and the transmission mechanism to swing, the first driving mechanism further drives the screen shaking mechanism to swing, the roller screen mechanism is installed on the machine frame, and the second driving mechanism is installed on the machine frame and used for driving the roller screen mechanism to rotate. Therefore, the harvesting experiment machine can truly simulate, the operation principle of the harvester can be known, the actual situation can be dealt with, and the limitation of the whole machine motion experiment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of simulation tools, and in particular to a multi-functional rice combine harvester experiment machine. Background Art

[0002] Most of the existing harvester experiment machines are of an integrated design, with fixed functions and limited adaptability. They cannot understand the operating principle of the harvester, cannot truly simulate, and are difficult to cope with real situations, resulting in limitations in the overall machine movement experiment. Summary of the Invention

[0003] Based on this, it is necessary to provide a multi-functional rice combine harvester experiment machine, aiming to solve the technical problems that most of the existing harvester experiment machines are of an integrated design, with fixed functions and limited adaptability, cannot understand the operating principle of the harvester, cannot truly simulate, and are difficult to cope with real situations, resulting in limitations in the overall machine movement experiment.

[0004] The present invention provides a multi-functional rice combine harvester experiment machine, which includes: a frame, a cutter bar mechanism, a connecting frame, a transmission mechanism, a first driving mechanism, a first power unit, a rotary sieve mechanism, a second driving mechanism, and a vibrating sieve mechanism. The cutter bar mechanism is connected to the connecting frame, the transmission mechanism is connected to the connecting frame, the connecting frame is rotatably connected to the frame, the first power unit is rotatably connected to the frame and is used to drive the connecting frame to drive the cutter bar mechanism and the transmission mechanism to swing. The first driving mechanism is installed on the frame and is used to drive the transmission mechanism to rotate. The first driving mechanism also drives the vibrating sieve mechanism to swing. The rotary sieve mechanism is installed on the frame, and the second driving mechanism is installed on the frame and is used to drive the rotary sieve mechanism to rotate.

[0005] In one embodiment, the cutter bar mechanism includes a second power unit, a moving frame, and a reel. The second power unit is rotatably connected to the connecting frame, the moving frame is rotatably connected to the connecting frame, the reel is rotatably connected to the moving frame, and the second power unit is rotatably connected to the moving frame and is used to drive the moving frame and the reel to swing.

[0006] In one embodiment, the cutter bar mechanism further includes a third power unit, a screw conveyor, a first belt assembly, an upper cutter, and a lower cutter. The third power unit is fixed to the moving frame, the third power unit is fixed to the screw conveyor and is used to drive the screw conveyor to rotate. The screw conveyor is in transmission connection with the first belt assembly, the first belt assembly is in transmission connection with the reel, one end of the screw conveyor is in transmission connection with the lower cutter, and the upper cutter is fixed to the moving frame.

[0007] In one embodiment, the transmission mechanism includes a second belt assembly, a first transmission shaft, a first sprocket, a first chain, a conveying member, a second sprocket, and a second transmission shaft. The first driving mechanism is in transmission connection with the second belt assembly, the second belt assembly is in transmission connection with the first transmission shaft, the first transmission shaft is rotatably connected to the connecting frame, the second transmission shaft is rotatably connected to the connecting frame, the first sprocket is fixed to the first transmission shaft, the second sprocket is fixed to the second transmission shaft, the first chain surrounds the first sprocket and the second sprocket, and the conveying member is fixed to the first chain.

[0008] In one embodiment, the transmission mechanism further includes a speed reducer, and the speed reducer is fixed to the connecting frame and fixedly connected to the second transmission shaft.

[0009] In one embodiment, the first driving mechanism includes a first driving motor and a crank. The first driving motor is fixed to the crank. One end of the crank is in transmission connection with the second belt assembly. The crank is rotatably connected to the vibrating sieve mechanism and is used to drive the vibrating sieve mechanism to swing reciprocally.

[0010] In one embodiment, the vibrating sieve mechanism includes a connecting rod, a first connecting rod, a first rotating rod, a first vibrating sieve plate, a second rotating rod, a second vibrating sieve plate, and a third rotating rod. The first connecting rod is fixed to one end of the first vibrating sieve plate. The first connecting rod is rotatably connected to the connecting rod. The connecting rod is rotatably connected to the crank. One end of the first vibrating sieve plate is rotatably connected to the machine frame through the first rotating rod, and the other end is rotatably connected to the second rotating rod. The second rotating rod is rotatably connected to the machine frame. The second rotating rod is also rotatably connected to the second vibrating sieve plate. The second vibrating sieve plate is also rotatably connected to the machine frame through the third rotating rod.

[0011] In one embodiment, the second driving mechanism includes a second driving motor, a worm, a worm gear, a third sprocket, a fourth sprocket, and a second chain. The rotary sieve mechanism includes a rolling member and a rotary sieve roller. The second driving motor is fixed to the machine frame. The second driving motor is fixedly connected to the worm. The worm is rotatably connected to the machine frame. The worm gear is rotatably connected to the machine frame and is fixed to the worm gear. The worm is meshed with the worm gear. One end of the worm is fixed with the third sprocket. The rolling member is rotatably connected to the machine frame. One end of the rolling member is fixed with the fourth sprocket. The second chain surrounds the third sprocket and the fourth sprocket.

[0012] Implementing the embodiments of the present invention will have the following beneficial effects: Using the multi-functional rice combined harvesting experimental machine of the present invention, the cutting table mechanism of the multi-functional rice combined harvesting experimental machine is connected to the connecting frame, the transmission mechanism is connected to the connecting frame, the connecting frame is rotatably connected to the machine frame, the first power unit is rotatably connected to the machine frame, and is used to drive the connecting frame to drive the cutting table mechanism and the transmission mechanism to swing. The first driving mechanism is installed on the machine frame and is used to drive the transmission mechanism to rotate. The first driving mechanism also drives the vibrating sieve mechanism to swing. The rotary sieve mechanism is installed on the machine frame, and the second driving mechanism is installed on the machine frame and is used to drive the rotary sieve mechanism to rotate, so that the harvesting experimental machine can truly simulate and understand the operating principle of the harvester, thereby coping with the actual situation and improving the limitations of the whole machine movement experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Wherein: Figure 1 FIG. is an axonometric schematic diagram of the multi-functional rice combined harvesting experimental machine in one embodiment.

[0015] Figure 2 is Figure 1 an exploded schematic diagram of the multi-functional rice combined harvesting experimental machine shown.

[0016] Figure 3 is Figure 1 a first-angle schematic diagram of the cutting table mechanism and the transmission mechanism in the multi-functional rice combined harvesting experimental machine shown.

[0017] Figure 4 is Figure 1 a second-angle schematic diagram of the cutting table mechanism and the transmission mechanism in the multi-functional rice combined harvesting experimental machine shown.

[0018] Figure 5 is Figure 1 a schematic diagram of the rotary sieve mechanism and the vibrating sieve mechanism in the multi-functional rice combined harvesting experimental machine shown.

[0019] Reference numerals: Machine frame; 2. Cutting table mechanism; 21. Second power unit; 22. Moving frame; 23. Reel; 24. Third power unit; 25. Auger; 26. First belt assembly; 27. Upper cutter; 28. Lower cutter; 3. Connecting frame; 4. Transmission mechanism; 41. Second belt assembly; 42. First transmission shaft; 43. First sprocket; 44. First chain; 45. Transmission part; 46. Second sprocket; 47. Second transmission shaft; 48. Reducer; First drive mechanism; 51. First drive motor; 52. Crank; 6. First power unit; 7. Rotary screen mechanism; 71. Rolling part; 72. Rotary screen roller; 8. Second drive mechanism; 81. Second drive motor; 82. Worm; 83. Worm gear; 84. Third sprocket; 85. Fourth sprocket; 86. Second chain; 9. Shaking screen mechanism; 91. Connecting rod; 92. First connecting rod; 93. First rotating rod; 94. First shaking screen plate; 95. Second rotating rod; 96. Second shaking screen plate; 97. Third rotating rod. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0023] In addition, if terms such as "first", "second", etc. are only used for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0024] It should be noted that the features in the embodiments of the present invention can be combined with each other without conflict.

[0025] Please refer to Figures 1 to 5 together for a description of the multi-functional rice combine harvester experiment machine provided by the present invention.

[0026] The multi-functional rice combine harvester experiment machine includes: a frame 1, a cutting table mechanism 2, a connecting frame 3, a transmission mechanism 4, a first driving mechanism 5, a first power unit 6, a rotary sieve mechanism 7, a second driving mechanism 8 and a vibrating sieve mechanism 9. The cutting table mechanism 2 is connected to the connecting frame 3, the transmission mechanism 4 is connected to the connecting frame 3, the connecting frame 3 is rotatably connected to the frame 1, the first power unit 6 is rotatably connected to the frame 1 and is used to drive the connecting frame 3 to drive the cutting table mechanism 2 and the transmission mechanism 4 to swing. The first driving mechanism 5 is installed on the frame 1 and is used to drive the transmission mechanism 4 to rotate. The first driving mechanism 5 also drives the vibrating sieve mechanism 9 to swing. The rotary sieve mechanism 7 is installed on the frame 1, and the second driving mechanism 8 is installed on the frame 1 and is used to drive the rotary sieve mechanism 7 to rotate.

[0027] It can be understood that the cutting table mechanism 2 of the multi-functional rice combine harvester experiment machine is connected to the connecting frame 3, the transmission mechanism 4 is connected to the connecting frame 3, the connecting frame 3 is rotatably connected to the frame 1, the first power unit 6 is rotatably connected to the frame 1 and is used to drive the connecting frame 3 to drive the cutting table mechanism 2 and the transmission mechanism 4 to swing. The first driving mechanism 5 is installed on the frame 1 and is used to drive the transmission mechanism 4 to rotate. The first driving mechanism 5 also drives the vibrating sieve mechanism 9 to swing. The rotary sieve mechanism 7 is installed on the frame 1, and the second driving mechanism 8 is installed on the frame 1 and is used to drive the rotary sieve mechanism 7 to rotate, enabling the harvester experiment machine to truly simulate and understand the operating principle of the harvester, so as to cope with real situations and improve the limitations of the overall machine movement experiment.

[0028] It should be noted that the multi-functional rice combine harvester experiment machine also includes a first sensor, a second sensor, a third sensor and a fourth sensor. The first sensor is used to sense the data of the cutting table mechanism 2, the second sensor is used to sense the data of the transmission mechanism 4, the third sensor is used to sense the data of the rotary sieve mechanism 7, and the fourth sensor is used to sense the data of the vibrating sieve mechanism 9. In this way, during the simulation process of the harvester experiment machine, the operating state and data can be sensed in real time. That is to say, after changing the operating parameters of the cutting table mechanism 2, the transmission mechanism 4, the rotary sieve mechanism 7 and the vibrating sieve mechanism 9, the changed parameter values can be sensed in real time, so as to conduct operating analysis and efficiency calculation.

[0029] In addition, the cutting table mechanism 2, the transmission mechanism 4, the rotary sieve mechanism 7 and the vibrating sieve mechanism 9 are modularly designed and can be replaced and disassembled, thus improving the expandability of the experiment machine. The modular structure enables the equipment to be flexibly configured in the experiment, adapt to different experimental conditions and requirements, and simplifies the adjustment and optimization process of the experimental equipment.

[0030] It should be added that the multi-functional rice combine harvester experimental machine also includes an intelligent control system. The intelligent control system can monitor and automatically adjust parameters in real time during the experiment, ensuring the accuracy and repeatability of experimental data, while reducing human errors and operation complexity. This design not only improves the experimental efficiency and data reliability, but also reduces the experimental cost, providing strong technical support for the research and development and optimization of agricultural mechanization equipment.

[0031] In this embodiment, the header mechanism 2 includes a second power unit 21, a moving frame 22 and a reel 23. The second power unit 21 is rotatably connected to the connecting frame 3, the moving frame 22 is rotatably connected to the connecting frame 3, the reel 23 is rotatably connected to the moving frame 22, and the second power unit 21 is rotatably connected to the moving frame 22 and is used to drive the moving frame 22 and the reel 23 to swing. Specifically, the second power unit 21 is an electric cylinder. The second power unit 21 drives the moving frame 22 to swing, and the moving frame 22 drives the reel 23 to swing, thereby adjusting the angle of the reel 23.

[0032] Furthermore, the header mechanism 2 further includes a third power unit 24, a screw conveyor 25, a first belt assembly 26, an upper cutter 27 and a lower cutter 28. The third power unit 24 is fixed to the moving frame 22, the third power unit 24 is fixed to the screw conveyor 25 and is used to drive the screw conveyor 25 to rotate. The screw conveyor 25 is in transmission connection with the first belt assembly 26, the first belt assembly 26 is in transmission connection with the reel 23, one end of the screw conveyor 25 is in transmission connection with the lower cutter 28, and the upper cutter 27 is fixed to the moving frame 22. Specifically, the third power unit 24 can be a motor. The third driving unit drives the screw conveyor 25 to rotate, the screw conveyor 25 drives the first belt assembly 26 to rotate, the first belt assembly 26 drives the reel 23 to rotate, and at the same time, the screw conveyor 25 also drives the lower cutter 28 to reciprocate.

[0033] Furthermore, the header mechanism 2 further includes an eccentric wheel, a first spherical eye joint, a transmission rod, a second spherical eye joint and a rotating disc. One end of the screw conveyor 25 is fixed to the eccentric wheel, the first spherical eye joint is rotatably connected to the eccentric wheel, the first spherical eye joint is in transmission connection with the second spherical eye joint through the transmission rod, the second spherical eye joint is rotatably connected to the rotating disc, the rotating disc is rotatably connected to the connecting frame 3, and one end of the lower cutter 28 is rotatably connected to the eccentric position of the rotating disc.

[0034] Further, the transmission mechanism 4 includes a second belt assembly 41, a first transmission shaft 42, a first sprocket 43, a first chain 44, a conveyor 45, a second sprocket 46, and a second transmission shaft 47. The first driving mechanism 5 is drivingly connected to the second belt assembly 41. The second belt assembly 41 is drivingly connected to the first transmission shaft 42. The first transmission shaft 42 is rotatably connected to the connecting frame 3. The second transmission shaft 47 is rotatably connected to the connecting frame 3. The first sprocket 43 is fixed to the first transmission shaft 42. The second sprocket 46 is fixed to the second transmission shaft 47. The first chain 44 surrounds the first sprocket 43 and the second sprocket 46. The conveyor 45 is fixed to the first chain 44. The first driving mechanism 5 drives the second belt assembly 41 to rotate. The second belt assembly 41 drives the first transmission shaft 42 to rotate. The first transmission shaft 42 drives the first sprocket 43 to rotate. The first sprocket 43 drives the first chain 44 to rotate. The first chain 44 drives the second sprocket 46 to rotate. The second sprocket 46 drives the second transmission shaft 47 to rotate. The second transmission shaft 47 drives the transmission member to rotate.

[0035] Further, the transmission mechanism 4 further includes a speed reducer 48. The speed reducer 48 is fixed to the connecting frame 3 and fixedly connected to the second transmission shaft 47. The speed reducer 48 is used to reduce the transmission speed of the transmission mechanism 4, thereby avoiding damage to personnel caused by excessive speed.

[0036] Further, the first driving mechanism 5 includes a first driving motor 51 and a crank 52. The first driving motor 51 is fixed to the crank 52. One end of the crank 52 is drivingly connected to the second belt assembly 41. The crank 52 is rotatably connected to the vibrating screen mechanism 9 and is used to drive the vibrating screen mechanism 9 to swing reciprocally. The first driving motor 51 drives the crank 52 to rotate. The crank 52 drives the vibrating screen mechanism 9 to swing reciprocally. At the same time, one end of the crank 52 drives the second belt assembly 41 to rotate.

[0037] Further, the vibrating sieve mechanism 9 includes a connecting rod 91, a first connecting rod 92, a first rotating rod 93, a first vibrating sieve plate 94, a second rotating rod 95, a second vibrating sieve plate 96 and a third rotating rod 97. The first connecting rod 92 is fixed to one end of the first vibrating sieve plate 94. The first connecting rod 92 is rotatably connected to the connecting rod 91. The connecting rod 91 is rotatably connected to the crank 52. One end of the first vibrating sieve plate 94 is rotatably connected to the frame 1 through the first rotating rod 93, and the other end is rotatably connected to the second rotating rod 95. The second rotating rod 95 is rotatably connected to the frame 1. The second rotating rod 95 is also rotatably connected to the second vibrating sieve plate 96. The second vibrating sieve plate 96 is also rotatably connected to the frame 1 through the third rotating rod 97. Specifically, the first driving motor 51 drives the crank 52 to rotate. The crank 52 drives the connecting rod 91 to reciprocate. The connecting rod 91 drives the first connecting rod 92 to reciprocate. The first connecting rod 92 drives the first rotating rod 93 to swing reciprocally, and drives the first vibrating sieve plate 94 to swing reciprocally. The first vibrating sieve plate 94 drives the second rotating rod 95 to swing reciprocally. The second rotating rod 95 drives the second vibrating sieve plate 96 to swing reciprocally. The second vibrating sieve plate 96 drives the third rotating rod 97 to swing reciprocally.

[0038] Further, the second driving mechanism 8 includes a second driving motor 81, a worm 82, a worm gear 83, a third sprocket 84, a fourth sprocket 85 and a second chain 86. The rotary sieve mechanism 7 includes a rolling member 71 and a rotary sieve roller 72. The second driving motor 81 is fixed to the frame 1. The second driving motor 81 is fixedly connected to the worm 82. The worm 82 is rotatably connected to the frame 1. The worm gear 83 is rotatably connected to the frame 1 and is fixed to the worm gear 83. The worm 82 is meshed with the worm gear 83. A third sprocket 84 is fixed to one end of the worm 82. The rolling member 71 is rotatably connected to the frame 1. A fourth sprocket 85 is fixed to one end of the rolling member 71. The second chain 86 surrounds the third sprocket 84 and the fourth sprocket 85.

[0039] Specifically, the second driving motor 81 drives the worm 82 to rotate. The worm 82 drives the worm gear 83 to rotate. The worm gear 83 drives the rotary sieve roller 72 to rotate. At the same time, the worm 82 also drives the third sprocket 84 to rotate. The third sprocket 84 drives the second chain 86 to rotate. The second chain 86 drives the fourth sprocket 85 to rotate. The fourth sprocket 85 drives the rolling member 71 to rotate.

[0040] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0041] The above-disclosed is only the preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Therefore, the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A multifunctional rice combine harvester experimental machine, characterized in that: The multifunctional rice combine harvester experimental machine includes: a frame, a harvesting table mechanism, a connecting frame, a transmission mechanism, a first driving mechanism, a first power unit, a rolling screen mechanism, a second driving mechanism and a shaking screen mechanism. The harvesting table mechanism is connected to the connecting frame, the transmission mechanism is connected to the connecting frame, the connecting frame is rotatably connected to the frame, the first power unit is rotatably connected to the frame, and is used to drive the connecting frame to drive the harvesting table mechanism and the transmission mechanism to swing, the first driving mechanism is installed on the frame, and is used to drive the transmission mechanism to rotate, the first driving mechanism also drives the shaking screen mechanism to swing, the rolling screen mechanism is installed on the frame, and the second driving mechanism is installed on the frame, and is used to drive the rolling screen mechanism to rotate.

2. The multifunctional rice combine harvester experimental machine according to claim 1, characterized in that: The harvesting platform mechanism includes a second power unit, a movable frame and a reel, wherein the second power unit is rotatably connected to the connecting frame, the movable frame is rotatably connected to the connecting frame, the reel is rotatably connected to the movable frame, and the second power unit is rotatably connected to the movable frame and is used to drive the movable frame and the reel to swing.

3. The multifunctional rice combine harvester experimental machine according to claim 2, characterized in that: The cutting table mechanism also includes a third power unit, an auger, a first belt assembly, an upper cutting knife and a lower cutting knife. The third power unit is fixed to the mobile frame. The third power unit is fixed to the auger and is used to drive the auger to rotate. The auger is transmission-connected to the first belt assembly, the first belt assembly is transmission-connected to the reel, one end of the auger is transmission-connected to the lower cutting knife, and the upper cutting knife is fixed to the mobile frame.

4. The multifunctional rice combine harvester experimental machine according to claim 1, characterized in that: The transmission mechanism includes a second belt assembly, a first transmission shaft, a first sprocket, a first chain, a transmission member, a second sprocket and a second transmission shaft. The first driving mechanism is transmission-connected to the second belt assembly, the second belt assembly is transmission-connected to the first transmission shaft, the first transmission shaft is rotationally connected to the connecting frame, the second transmission shaft is rotationally connected to the connecting frame, the first sprocket is fixed to the first transmission shaft, the second sprocket is fixed to the second transmission shaft, the first chain surrounds the first sprocket and the second sprocket, and the transmission member is fixed to the first chain.

5. The multifunctional rice combine harvester experimental machine according to claim 4, characterized in that: The transmission mechanism also includes a reducer, which is fixed to the connecting frame and fixedly connected to the second transmission shaft.

6. The multifunctional rice combine harvester experimental machine according to claim 4, characterized in that: The first driving mechanism includes a first driving motor and a crank, the first driving motor is fixed to the crank, one end of the crank is drivingly connected to the second belt assembly, the crank is rotationally connected to the shaking screen mechanism, and is used to drive the shaking screen mechanism to swing back and forth.

7. The multifunctional rice combine harvester experimental machine according to claim 6, characterized in that: The shaking screen mechanism includes a connecting rod, a first connecting rod, a first rotating rod, a first shaking screen plate, a second rotating rod, a second shaking screen plate and a third rotating rod, the first connecting rod is fixed to one end of the first shaking screen plate, the first connecting rod is rotatably connected to the connecting rod, the connecting rod is rotatably connected to the crank, one end of the first shaking screen plate is rotatably connected to the frame through the first rotating rod, and the other end is rotatably connected to the second rotating rod, the second rotating rod is rotatably connected to the frame, the second rotating rod is also rotatably connected to the second shaking screen plate, and the second shaking screen plate is also rotatably connected to the frame through the third rotating rod.

8. The multifunctional rice combine harvester experimental machine according to claim 1, characterized in that: The second driving mechanism includes a second driving motor, a worm, a worm wheel, a third sprocket, a fourth sprocket and a second chain, the rolling screen mechanism includes a rolling member and a rolling screen roller, the second driving motor is fixed to the frame, the second driving motor is fixedly connected to the worm, the worm is rotatably connected to the frame, the worm wheel is rotatably connected to the frame and fixed to the worm wheel, the worm is meshed with the worm wheel, the third sprocket is fixed to one end of the worm, the rolling member is rotatably connected to the frame, the fourth sprocket is fixed to one end of the rolling member, and the second chain surrounds the third sprocket and the fourth sprocket.

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