Self-propelled seedling throwing device for greenhouse rice

Abstract

The invention discloses a self-propelled seedling throwing device for greenhouse rice, which comprises a conveying frame, a main driving motor, a conveying belt, an angle adjusting gear, a positioning support plate, a storage box body, a lifting control motor, a translation control motor and a combined guide frame, and a conveying belt is installed at the middle end of the main driving motor in a surrounding and sleeving mode and is in direct driving connection with the motor through a roller, a cushion block is arranged on the outer surface of the conveying belt, and an angle adjusting gear and a positioning supporting plate are installed on a rotating shaft on the outer side of the rear end of the conveying belt. According to the self-propelled seedling throwing device for the greenhouse rice, the rack track is driven by the lifting control motor to be meshed with the angle adjusting gear, the seedling throwing angle can be accurately adjusted, and according to the planting requirements of different areas in the greenhouse, accurate throwing of seedlings is ensured through the design of the adjusting angle.

Description

Technical Field

[0001] The invention relates to the technical field of greenhouse rice planting, in particular to a self-propelled rice seedling throwing device for a greenhouse. Background Art

[0002] In recent years, the benefits of growing grain have been relatively low, while facility vegetables have developed rapidly. The pressure on grain production has increased year by year, and the safety of the "rice bag" has become increasingly prominent. In order to achieve stable grain production and increase efficiency, the greenhouse vegetable-rice rotation model has been vigorously promoted and applied. The greenhouse vegetable-rice rotation model has a tight planting cycle, and rice planting generally adopts the transplanting method. However, the greenhouse door is small, making it inconvenient for rice transplanters to enter and exit, and the space inside the greenhouse is small, making it inconvenient for transplanters to operate in the greenhouse, and the machine transplanting efficiency is low. The rice seedling broadcasting planting method has the characteristics of light plant injury, fast greening, and early tillering, and is suitable for promotion and application in greenhouse rice cultivation.

[0003] At present, there are two main modes of seedling throwing technology in agricultural production: manual and mechanical. Manual seedling throwing has high labor intensity and low operation efficiency, which can easily lead to uneven distribution of seedlings, requiring secondary replanting and affecting field management and seedling growth. Although mechanical seedling throwing can alleviate the manpower burden, its device structure is complex and the seedling trays are difficult to recover. Especially in the multi-link seedling picking and seedling delivery process, the rotating mechanism can easily damage the seedling roots and nutrient soil, directly affecting the later greening effect of live plants. Both methods generally have problems such as poor row and plant spacing control accuracy and insufficient field regularity when operating in narrow greenhouse areas. The high-pressure airflow or mechanical impact during the operation of mechanical spreading equipment is more likely to cause secondary damage such as seedling breakage and root damage, ultimately leading to a decrease in survival rate.

[0004] For example, in the comparative document: an intelligent self-ordering rice seedling throwing machine, publication number: CN118975450A, the overall volume is too large, and the outlet angle for throwing the rice seedlings is fixed. The parabola is controlled by wind power, and the force throwing system requires relatively complex equipment, such as fans, pipes and nozzles, etc. The initial investment is large, and it is easy to be affected when working in a small space such as a greenhouse, and is not suitable for rice planting in a greenhouse;

[0005] For example, in the reference document: An intelligent ejection-type seedling throwing machine for orderly seedling throwing and its control method, publication number: CN108235846A, the machine moves in the field through tracks, which causes damage to the land, and when it moves on soft land, the overall local angle changes, affecting the throwing accuracy. At the same time, the seedlings are accumulated in the drop barrel, and the material is automatically discharged through the drop switch baffle, and the seedlings at the bottom are squeezed into blocks, affecting the feeding efficiency;

[0006] For example, in the comparative document: a self-falling seedling throwing structure, publication number: CN115349332A, after the seedlings are clamped by the clamping mechanism, the clamping mechanism lowers the seedlings, and the seedlings fall into the hollow tube. The lifting mechanism controls the pressure cover to close with the hollow tube cover, and the air pressure in the air pipe drives the seedlings in the hollow tube into the field to complete the seedling throwing. The overall operation can easily cause the seedlings to be damaged during the clamping movement and the air pressure driving into the field. The clamping side of the clamping mechanism is provided with a silicone layer, but the clamping mechanism will squeeze and position the seedlings during operation, and the silicone layer will also squeeze the seedlings. If the clamping force is not enough, the seedlings will fall off.

[0007] Therefore, in order to improve the efficiency of rice seedling throwing in greenhouse rice planting, a self-propelled rice seedling throwing device for greenhouse rice is proposed. Summary of the invention

[0008] The purpose of the present invention is to provide a self-propelled rice seedling throwing device for greenhouses, so as to solve the problems of existing rice seedling throwing in greenhouses, that the distribution and sowing density of seedlings are often difficult to be uniform in the narrow greenhouse space, and when mechanized equipment such as pneumatic throwing is used during the seedling throwing process, especially when the seedlings are relatively fragile, the high pressure or impact of the machine may cause the seedlings to be broken or the root system to be damaged, thereby affecting the survival rate, and the ground-walking machine needs to occupy the ground space in the greenhouse, which makes it difficult to move flexibly, especially in the narrow greenhouse environment, and the machine is easily sunk due to muddy paddy fields, thereby increasing the difficulty of operation.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-propelled rice seedling throwing device for greenhouse, comprising a conveying frame, a main driving motor, a conveyor belt, an angle adjustment gear, a positioning support plate, a storage box, a lifting control motor, a translation control motor and a combined guide frame, the front end outer base of the conveying frame is installed with the main driving motor, and the middle end of the main driving motor is surrounded and sleeved with a conveyor belt, the conveyor belt is directly driven and connected to the motor through a roller, a pad is provided on the outer surface of the conveyor belt, the rear end outer shaft of the conveyor belt is installed with an angle adjustment gear and a positioning support plate, and the top of the positioning support plate is installed with a storage box, the back side of the storage box is fixedly installed with a lifting control motor and a translation control motor, and the translation control motor is located below the lifting control motor, and the rear side of the storage box is installed with a combined guide frame.

[0010] It can be seen that the traditional seedling throwing work in the greenhouse is carried out by manual or auxiliary tools. These devices need to be operated manually. At the same time, during the mechanical seedling throwing process, due to high-speed airflow or conveyor belt vibration, the roots of the seedlings are easily damaged or broken, affecting the survival rate and growth potential after transplanting.

[0011] Preferably, the pad block and the conveyor belt are integrally formed, and the front side of the top of the pad block is inclined at an angle, the pad block is arranged in a crescent structure, the pad blocks are distributed around the conveyor belt at equal intervals, and the conveyor belt is made of rubber material, the angle adjustment gears are symmetrically distributed on the conveying frame, the angle adjustment gears are connected to the conveying frame by inlay fixation, the conveying frame is connected to the positioning support plate by a hinged connection, and the positioning support plate is connected to the storage box by welding fixation, and the rotation center point of the positioning support plate and the conveying frame is located at the rear end of the conveying frame.

[0012] In the above scheme, the angle adjustment gear is installed on the conveying frame. By rotating the position of the adjustment gear, the angle of the conveying frame under the storage box can be changed. The positioning support plate is hingedly connected to the conveying frame, so the scattering angle of the seedlings can be adjusted according to actual needs.

[0013] It can be seen that through the design of the angle adjustment gear, the angle of seedling placement can be flexibly adjusted, making the seedling placement more precise and uniform. Compared with traditional manual or simple mechanical devices, this design provides higher flexibility and accuracy, ensuring that the operating requirements of different greenhouses can be met, avoiding the situation of overcrowding or uneven distribution of seedlings, thereby improving operating efficiency.

[0014] Preferably, the storage box body includes a limit stop bar, a seedling guide partition, a partition plate, a guide support plate, a support panel, a thrust support rod, a driving cam, a connecting shaft and a driven bevel gear, the limit stop bar is welded and fixedly installed on the top rear side of the storage box body, and the seedling guide partition and the partition plate are fixedly installed at the lower part of the interior of the storage box body, the seedling guide partition divides the internal space of the storage box body, the seedling storage bin is above the seedling guide partition, the seedling discharge channel is behind the seedling guide partition, the partition plate and the seedling guide partition are connected in an inlaid and fixed manner, the partition plate divides the seedling discharge channel into a plurality of independent channels, a guide support plate is installed below the partition plate, and the top of the guide support plate is connected to the bottom frame rotating shaft of the storage box body, a support panel is installed inside the lower part of the seedling guide partition, and a thrust support rod is arranged on the top surface of the support panel, the thrust support rod passes through the top surface of the seedling guide partition, and the support panel is below A driving cam is installed, and a connecting shaft is fixedly installed at the rear end center of the driving cam, and the connecting shaft passes through the rear end frame of the guide seedling partition, the partition plate and the storage box body, and the rear end of the connecting shaft is fixedly installed with a driven bevel gear, and the bottom end frame of the guide support plate is rounded, and the guide support plate naturally hangs to the top surface of the conveyor belt by inclination, and is separated by external force or deadweight after contact, and the support panel is in contact with the inner wall of the storage box body and the surface of the seedling guide partition, and the support panel is restricted by the seedling guide partition and adopts a sliding lifting method with the storage box body, the support panel is fixedly connected to the thrust support rod by inlaying, and the connection method of the thrust support rod and the seedling guide partition is a sliding connection, and the top surface of the seedling guide partition is an inclined structure, the connection method of the support panel and the driving cam is a fitting connection, and the connection method of the driving cam with the seedling guide partition, the partition plate and the storage box body through the connecting shaft is a bearing connection.

[0015] In the above scheme, a seedling guide partition and a partition plate are arranged inside the storage box. The seedling guide partition divides the internal space of the storage box into sections for storing seedlings and guiding the discharge of the seedlings. Through the cooperation of the thrust support rod and the driving cam, the support panel can drive the thrust support rod to slide and rise and fall under the guidance of the seedling guide partition, thereby loosening the seedlings in the storage box and ensuring that the seedlings can smoothly pass through the space between the partition plates. The seedlings slide onto the guide support plate for discharge for feeding. At the same time, the guide support plate naturally falls to the top surface of the conveyor belt by tilting. When the angle of the conveyor belt is adjusted, the guide support plate is pushed to rotate by the external force of the conveyor belt. At the same time, the inclined structural position of the guide support plate allows the guide support plate to remain in contact with the conveyor belt through its own weight. The structure of the guide support plate will not affect the conveying work of the pad for the seedlings, thereby maintaining the stability of the seedling transportation.

[0016] It can be seen that the structural design makes the storage and discharge of seedlings in the storage box more efficient and orderly. The support panel is matched and changed according to the angle adjustment of the conveyor belt, which can effectively avoid the accumulation or dislocation of seedlings, thereby ensuring that the seedlings are discharged evenly and orderly, improving the efficiency and accuracy of the operation. The continuous lifting and lowering operation of the thrust support rod prevents the seedlings at the bottom of the storage box from being squeezed and piled together and unable to be discharged, thereby improving the feeding efficiency.

[0017] Preferably, the lifting control motor includes a driving shaft, a lifting bracket and a rack track, the output end of the lifting control motor is inlaid and fixedly installed with a driving shaft, the outer side of the driving shaft is sleeved with a lifting bracket, and a rack track is arranged on the front side of the bottom end of the lifting bracket, the rack track is meshed and connected with the angle adjustment gear, the connection mode between the driving shaft and the lifting bracket is a driving lifting connection, and the connection mode between the lifting bracket and the outer surface of the storage box is a sliding fit.

[0018] In the above scheme, the lifting control motor drives the lifting bracket through the driving shaft, the rack track arranged on the lifting bracket is meshed with the angle adjustment gear, and the sliding of the lifting bracket drives the conveying frame to rotate to adjust the angle of seedling scattering. Through this angle adjustment method, the scattering angle can be flexibly adjusted according to the operation requirements of the greenhouse and the specific conditions of the seedlings, so that the seedlings are planted evenly.

[0019] It can be seen that the design of the lifting control motor enables the device to automatically adjust the angle according to different working environments, ensuring that the seedlings are scattered at the most appropriate angle, improving the flexibility and accuracy of the operation, adapting to different heights or ground undulations in the greenhouse, and ensuring the uniform placement of seedlings. Through precise angle adjustment, the uneven density or poor growth of seedlings caused by uneven placement is reduced, thereby improving the survival rate of crops and subsequent growth effects.

[0020] Preferably, the translation control motor includes a driving gear, a support shaft and an active bevel gear, the output end of the translation control motor is inlaid with a driving gear, and the support shaft is inlaid with a fixed installation at the bottom center of the driving gear, the bottom end of the support shaft is welded and fixedly installed with an active bevel gear, and the active bevel gear is meshingly connected with the driven bevel gear.

[0021] In the above scheme, the translation control motor cooperates with the thrust support rod through the active bevel gear to perform continuous lifting and lowering work. Through the engagement of the active bevel gear and the driven bevel gear, the translation control motor can realize the continuous rotation of the driving cam, push the support panel and the thrust support rod to rise and fall, and perform continuous loosening work to ensure that the seedlings can be discharged stably as needed.

[0022] It can be seen that the design of the translation control motor can ensure that the seedlings are discharged stably and evenly in the storage box through precise gear meshing and support panel lifting. Through continuous loosening work, the seedlings are prevented from being damaged due to dense stacking during transportation. The translation control motor makes the seedling discharge process smoother, reduces planting deviations caused by improper equipment operation, and ensures the uniformity and consistency of the seedlings when they are scattered.

[0023] Preferably, the combined guide frame includes a translation guide groove, a support groove, a reinforcement plate, a fixing bolt assembly, a rolling support wheel, a support support rod, a fixing support rod, a guide frame and a rack block. The combined guide frame is provided with a translation guide groove, and the back of the end of the combined guide frame is provided with a support groove. A reinforcement plate is installed inside the support groove, and one end of the reinforcement plate extends out of the support groove, and the length of the reinforcement plate is half of the length of the support groove. The reinforcement plate is fixedly connected to the combined guide frame by a fixing bolt assembly, and a rolling support wheel is installed inside the translation guide groove. A movable support wheel, and a supporting rod is installed at the front end center of the rolling support wheel, a fixed rod is welded and fixedly installed on the top surface of the combined guide frame, and a guide frame is welded and fixedly installed on the top end of the fixed rod, a rack block is provided on the front surface of the guide frame, and the rack block is meshed and connected with the driving gear, the rolling support wheel is connected to the combined guide frame through a reinforcement plate in a rolling and translational manner, and the reinforcement plates are symmetrically distributed on the combined guide frame, the rolling support wheel is connected to the supporting rod by a bearing connection, and the supporting rod is connected to the storage box by welding.

[0024] In the above scheme, the combined guide frame can realize the smooth movement of the storage box through the cooperation of the translation guide groove and the rolling support wheel. The connection method between the support rod and the storage box is welding and fixing, which ensures that the storage box is stable and not prone to displacement during the translation process. The guide frame and the rack block are connected to the driving gear, so that the translation control motor can drive the support panel and the thrust support rod to rise and fall while driving the storage box to translate.

[0025] It can be seen that the design of the combined guide frame effectively improves the stability and accuracy of the equipment, ensures the smooth movement of the storage box during operation, and reduces friction and energy consumption through the translation function of the rolling support wheels, making the equipment more efficient when working.

[0026] Compared with the prior art, the beneficial effects of the present invention are: the self-propelled rice seedling throwing device for greenhouse;

[0027] 1. The lifting control motor drives the meshing of the rack track and the angle adjustment gear, which can accurately adjust the seedling placement angle. According to the planting needs of different areas in the greenhouse, the angle adjustment design ensures accurate seedling placement;

[0028] 2. Through the precisely controlled gear meshing, the translation control motor ensures that the storage box can move smoothly. When controlling the translation of the storage box, the translation control motor loosens the seedlings inside the storage box through the linkage assembly to avoid accumulation or misalignment, ensuring that the seedlings are stably discharged during transportation;

[0029] 3. Seedling guide partitions and partitions are set in the storage box. The support panel and thrust support rod are used to loosen and smoothly discharge the seedlings, avoiding the accumulation of seedlings and possible damage during transportation, ensuring that the seedlings can smoothly pass through the channels between the partitions and be discharged evenly and efficiently. Through the sliding and lifting of the support panel, the seedlings will not be blocked due to dense accumulation, thereby improving the feeding efficiency.

[0030] 4. This device is fixedly connected to the greenhouse truss through a combined guide frame and is installed above the ground in a suspended manner. It does not need to occupy ground space, which solves the problem of difficult operation of the rice seedling transplanter in the narrow space of the greenhouse and the collapse of paddy fields. The meshing transmission of the translation guide groove, rolling support wheel and driving gear and rack block of the combined guide frame enables the device to move at a uniform speed along the truss track. No manual push is required during the rice seedling transplanting process, and the operation is stable and efficient. The combined guide frame reduces friction and energy consumption through the coordination of the translation guide groove and rolling support wheel, improves the stability and accuracy of the equipment during operation, and improves the stability of the storage box, making it less likely to deviate during the translation process, ensuring the accuracy of seedling placement and improving the working efficiency of the equipment.

[0031] 5. The pad is integrally formed with the conveyor belt, and the pad is in a crescent shape with an inclined angle. The seedlings slide onto the pad to reduce the damage of the seedlings during transportation. The pads are evenly spaced and distributed around the surface of the conveyor belt to enhance the stability of the transportation process. Through precise coordination with the conveyor belt and adjusting the running speed of the conveyor belt and the pad, the area where the seedlings are scattered can be controlled. At the same time, the pad increases the thrust during the seedling scattering process and improves the scattering efficiency. Because the device is located above the rice field, the seedling root substrate is dropped by its own weight, which effectively reduces energy consumption while maintaining the accuracy of the seedling roots falling on the rice field first. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall combined three-dimensional structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the overall flip three-dimensional structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the three-dimensional structure of the conveying frame and the positioning support plate of the present invention;

[0035] Figure 4 It is a schematic diagram of the three-dimensional structure of the internal components of the storage box of the present invention;

[0036] Figure 5 This is a schematic diagram of the three-dimensional structure of the internal components of the storage box of the present invention from a bottom-up perspective;

[0037] Figure 6 It is a schematic diagram of the inverted three-dimensional structure of the internal components of the storage box of the present invention;

[0038] Figure 7 It is a schematic diagram of the three-dimensional structure of the support panel and the thrust support rod of the present invention;

[0039] Figure 8 It is a schematic diagram of the three-dimensional structure of the driving cam, the connecting shaft and the driven bevel gear of the present invention;

[0040] Fig. 9 It is a schematic diagram of the combined structure of the lifting control motor, the translation control motor and the combined guide frame of the present invention;

[0041] Fig.10 It is a schematic diagram of the three-dimensional structure of the combined guide frame of the present invention;

[0042] Fig.11 It is a schematic diagram of the three-dimensional structure of the support rod and the rolling support wheel of the present invention.

[0043] In the figure: 1. conveying frame; 2. main driving motor; 3. conveyor belt; 31. pad; 4. angle adjustment gear; 5. positioning support plate; 6. storage box; 61. limit stop bar; 62. seedling guide partition; 63. partition plate; 64. guide support plate; 65. support panel; 66. thrust support rod; 67. driving cam; 68. connecting shaft; 69. driven bevel gear; 7. lifting control motor; 71. driving shaft; 72. lifting bracket; 73. rack track; 8. translation control motor; 81. driving gear; 82. support shaft; 83. active bevel gear; 9. combined guide frame; 91. translation guide groove; 92. support groove; 93. reinforcement plate; 94. fixing bolt assembly; 95. rolling support wheel; 96. supporting support rod; 97. fixing support rod; 98. guide frame; 99. rack block. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figures 1 to 11 The present invention provides a self-propelled rice seedling throwing device for greenhouse, and the technical scheme is as follows:

[0046] The greenhouse rice self-propelled seedling throwing device designed by the present invention includes a conveying frame 1, a main driving motor 2, a conveyor belt 3, a cushion block 31, an angle adjustment gear 4, a positioning support plate 5, a storage box 6, a lifting control motor 7, a translation control motor 8, and a combined guide frame 9. In the storage box 6, it includes a limit stop bar 61, a seedling guide partition 62, a partition plate 63, a guide support plate 64, a support panel 65, a thrust support rod 66, a driving cam 67, a connecting shaft 68 and a driven bevel gear 69. In the lifting control motor 7, it includes a driving shaft 71, a lifting bracket 72 and a rack track 73. In the translation control motor 8, it includes a driving gear 81, a support shaft 82 and an active bevel gear 83. In the combined guide frame 9, it includes a translation guide groove 91, a support groove 92, a reinforcement plate 93, a fixing bolt assembly 94, a rolling support wheel 95, a supporting support rod 96, a fixed support rod 97, a guide frame 98 and a rack block 99.

[0047] As an embodiment of the present invention, refer to Figure 1 to Figure 2 The conveying frame 1, the main driving motor 2, the conveyor belt 3, the angle adjustment gear 4, the positioning support plate 5, the storage box 6, the lifting control motor 7, the translation control motor 8 and the combined guide frame 9 together constitute the main body of the self-propelled seedling throwing device. The main driving motor 2 is installed on the front outer base of the conveying frame 1, and the conveyor belt 3 is installed around the middle end of the main driving motor 2. The conveyor belt 3 is directly driven and connected with the motor through a roller. A pad 31 is provided on the outer surface of the conveyor belt 3. The angle adjustment gear 4 and the positioning support plate 5 are installed on the outer rotating shaft of the rear end of the conveyor belt 3, and the storage box 6 is installed on the top of the positioning support plate 5. The lifting control motor 7 and the translation control motor 8 are fixedly installed on the back of the storage box 6, and the translation control motor 8 is located below the lifting control motor 7. A combined guide frame 9 is installed at the rear of the storage box 6.

[0048] As an embodiment of the present invention, refer to Figures 1 to 3 The pad 31 is integrally formed with the conveyor belt 3, and the front side of the top of the pad 31 is inclined at an angle. The pad 31 is a crescent structure. The pad 31 is evenly spaced and distributed around the conveyor belt 3, and the conveyor belt 3 is made of rubber material. The angle adjustment gear 4 is symmetrically distributed on the conveying frame 1, and the angle adjustment gear 4 is connected to the conveying frame 1 by inlaying and fixing. The conveying frame 1 and the positioning support plate 5 are connected by hinged connection, and the positioning support plate 5 and the storage box 6 are connected by welding and fixing, and the rotation center point of the positioning support plate 5 and the conveying frame 1 is located at the rear end of the conveying frame 1, so as to reduce resistance during the seedling transportation process and ensure the stable movement of the seedlings. The angle adjustment gear 4 is symmetrically distributed with the conveying frame 1 and is fixed on the conveying frame 1 by inlaying, so as to accurately adjust the angle of the conveyor belt 3.

[0049] As an embodiment of the present invention, refer to Figures 4 to 8 The storage box 6 includes a limit stop bar 61, a seedling guide partition 62, a partition plate 63, a guide support plate 64, a support panel 65, a thrust support rod 66, a driving cam 67, a connecting shaft 68 and a driven bevel gear 69. The limit stop bar 61 is welded and fixedly installed on the rear side of the top of the storage box 6, and a seedling guide partition 62 and a partition plate 63 are fixedly installed at the lower part of the storage box 6. The seedling guide partition 62 divides the internal space of the storage box 6. The seedling guide partition 62 is above the seedling storage bin, and the seedling guide partition 62 is behind the seedling discharge channel. The partition plate 63 is connected to the seedling guide partition 62 by inlaying and fixing. The partition plate 63 The seedling discharge channel is divided into a plurality of independent channels, a guide support plate 64 is installed below the partition plate 63, and the top of the guide support plate 64 is connected to the bottom frame rotation axis of the storage box 6, a support panel 65 is installed inside the lower part of the seedling guide partition 62, and a thrust support rod 66 is arranged on the top surface of the support panel 65, and the thrust support rod 66 passes through the top surface of the seedling guide partition 62, a driving cam 67 is installed below the support panel 65, and a connecting shaft 68 is fixedly installed at the rear end center of the driving cam 67, and the connecting shaft 68 passes through the seedling guide partition 62, the partition plate 63 and the rear end frame of the storage box 6, and the connecting shaft 68 The rear end of the guide support plate 64 is fixedly installed with a driven bevel gear 69, and the bottom end frame of the guide support plate 64 is rounded. The guide support plate 64 naturally falls to the top surface of the conveyor belt 3 by tilting, and is separated by external force or deadweight after contact. The support panel 65 fits the inner wall of the storage box 6 and the surface of the guide seedling partition 62, and the support panel 65 is restricted by the guide seedling partition 62 and adopts a sliding lifting method with the storage box 6. The support panel 65 is fixedly connected with the thrust support rod 66 by inlaying, and the connection method of the thrust support rod 66 and the guide seedling partition 62 is a sliding connection, and the top surface of the guide seedling partition 62 is an inclined structure. The connection between the plate 65 and the driving cam 67 is a fitting connection, and the connection between the driving cam 67 and the seedling guide partition 62, the partition plate 63 and the storage box 6 is a bearing connection through the connecting shaft 68. The storage box 6 includes a limit stop bar 61, a seedling guide partition 62, a partition plate 63, etc. The structural design can effectively divide the seedling storage and discharge areas. The seedling guide partition 62 divides the internal space of the storage box 6 into partitions, the top is used for storing seedlings, and the bottom rear is used for discharge. The support panel 65, the thrust support rod 66 and the driving cam 67 work together to loosen the bottom of the seedling storage area inside the storage box 6 to improve the discharge efficiency.

[0050] As an embodiment of the present invention, refer to Figure 2 and Fig. 9The lifting control motor 7 includes a driving shaft 71, a lifting bracket 72 and a rack track 73. The output end of the lifting control motor 7 is inlaid and fixed with the driving shaft 71. The lifting bracket 72 is sleeved on the outer side of the driving shaft 71, and a rack track 73 is arranged on the front side of the bottom end of the lifting bracket 72. The rack track 73 is meshed and connected with the angle adjustment gear 4. The connection mode between the driving shaft 71 and the lifting bracket 72 is a driving lifting connection, and the connection mode between the lifting bracket 72 and the outer surface of the storage box 6 is a sliding fit, which ensures that the lifting bracket 72 can accurately control the angle adjustment of the conveying frame 1 to achieve accurate delivery of the seedlings.

[0051] As an embodiment of the present invention, refer to Figure 2 and Figures 4 to 9 The translation control motor 8 includes a driving gear 81, a support shaft 82 and an active bevel gear 83. The output end of the translation control motor 8 is inlaid with the driving gear 81, and the support shaft 82 is inlaid and fixedly installed at the bottom center of the driving gear 81. The bottom end of the support shaft 82 is welded and fixedly installed with an active bevel gear 83. The active bevel gear 83 is meshed and connected with the driven bevel gear 69. The support shaft 82 is used to stabilize the movement of the device. The active bevel gear 83 is meshed and connected with the driven bevel gear 69, so that the storage box 6 can continuously loosen the seedlings.

[0052] As an embodiment of the present invention, refer to Figure 1 to Figure 2 and Figures 9 to 11The combined guide frame 9 includes a translation guide groove 91, a support groove 92, a reinforcement plate 93, a fixing bolt assembly 94, a rolling support wheel 95, a support support rod 96, a fixed support rod 97, a guide frame 98 and a rack block 99. The combined guide frame 9 is provided with a translation guide groove 91, and a support groove 92 is provided on the back of the end of the combined guide frame 9. A reinforcement plate 93 is installed inside the support groove 92, and one end of the reinforcement plate 93 extends out of the support groove 92, and the length of the reinforcement plate 93 is half of the length of the support groove 92. The reinforcement plate 93 is fixedly connected to the combined guide frame 9 by a fixing bolt assembly 94. A rolling support wheel 95 is installed inside the translation guide groove 91, and a support support rod 96 is installed at the front end center of the rolling support wheel 95. A fixed support rod 97 is welded and fixedly installed on the top surface of the combined guide frame 9, and a guide frame 98 is welded and fixedly installed on the top end of the fixed support rod 97. A rack block 99 is provided on the front surface of the guide frame 98, and the rack block 99 9 is meshed and connected with the driving gear 81, the rolling support wheel 95 is connected to the combined guide frame 9 through the reinforcement plate 93 by rolling translation, and the reinforcement plate 93 is symmetrically distributed on the combined guide frame 9, the rolling support wheel 95 is connected to the supporting support rod 96 by bearing connection, and the supporting support rod 96 is connected to the storage box 6 by welding and fixing, the rack block 99 is meshed with the driving gear 81, the device can be fixed to the greenhouse truss through the threaded holes and fasteners on the back of the combined guide frame 9, and the reinforcement plate 93 and the fixing bolt assembly 94 are used between the combined guide frames 9 to improve the stability of the line after laying, the translation guide groove 91 of the combined guide frame 9 is laid along the length direction of the greenhouse truss to form a track line, the translation control motor 8 drives the driving gear 81 to rotate, and the driving gear 81 is meshed with the rack block 99, driving the storage box 6 as a whole to translate along the track through the rolling support wheel 95 and the supporting support rod 96 according to the translation guide groove 91, so as to realize the self-propelled device and perform automatic seedling throwing.

[0053] Workflow: First, lay the combined guide frame 9, splice and lay it according to the line shape of the greenhouse planting area, and fix it to the greenhouse support structure through the threaded holes on the back. Adjacent combined guide frames 9 are seamlessly connected through support grooves 92, reinforcement plates 93 and fixing bolt assemblies 94 to form a continuous translation track to meet the requirements of different greenhouse lengths. Only the first frame is installed with support rods 96 and rolling wheels 95, and the remaining frames only need to provide the function of translation guide grooves 91 to reduce redundant costs. The ends of the support rods 96 are inserted into the reserved holes of the storage box 6, and welded and reinforced to ensure load-bearing stability. The driving gear 81 of the translation control motor 8 is strictly meshed with the rack block 99 on the frame to form a linear motion transmission chain;

[0054] The power supply mode is selected, and the lifting control motor 7, the translation control motor 8, and the main drive motor 2 are connected to the greenhouse power supply system through the power cord. It is suitable for fixed long-term operation. A battery pack and a control chip are installed in the storage box 6 to realize mobile operation and adapt to the environment without stable power supply. The control chip can be programmed to set the scattering path, speed and density, and supports remote operation or sensor linkage. The seedlings are placed above the seedling guide partition 62 inside the storage box 6. The seedlings form a slide through the inclined design of the seedling guide partition 62 and the partition plate 63. The seedlings rely on gravity to slide to the guide support plate 64, and accurately slide to the outer surface of the conveyor belt 3 according to the guide support plate 64. Pads 31 are added to the surface of the conveyor belt 3 to increase friction to prevent the seedlings from sliding and achieve uniform arrangement;

[0055] After the main driving motor 2 is started, it drives the conveyor belt 3 to operate in a circular manner, and at the same time activates the translation control motor 8 to drive the driving gear 81 to move along the rack block 99. The storage box 6 slides in the translation guide groove 91 through the rolling support wheel 95 to achieve uniform linear motion. The active bevel gear 83 drives the connecting shaft 68 and the driving cam 67 to operate through the driven bevel gear 69. The driving cam 67 drives the support panel 65 and the thrust support rod 66 to be lifted periodically to loosen the accumulated seedlings to ensure continuous unloading. During the operation of the conveyor belt 3, the conveyor belt 3 drives the pad 31 to operate synchronously. The conveyor belt 3 drives the seedlings to be transported evenly and stably according to the pad 31. According to the start of the conveyor belt 3, the storage box 6 is The seedlings are discharged and fed in sequence. According to the planting area required by the greenhouse, the angle position of the conveying frame 1 is started by the lifting control motor 7 to drive the driving shaft 71 to rotate. The driving shaft 71 can drive the lifting bracket 72 to lift and operate. The lifting bracket 72 drives the angle adjustment gear 4 to rotate through the rack track 73. The angle adjustment gear 4 can drive the conveying frame 1 and the conveyor belt 3 to rotate through the positioning support plate 5, so as to adjust the angle position of the scattering. The guide support plate 64 can be connected to the storage box 6 through rotation to guide the support plate 64 to keep in contact with the conveyor belt 3. The speed of the main driving motor 2 is adjusted to control the scattering density. The linear scattering mode is realized by combining the translation speed and the conveyor belt angle to cover different planting areas.

[0056] During the scattering and feeding process, when the translation control motor 8 is started, the translation control motor 8 can be connected to the meshing of the rack block 99 on the guide frame 98 through the driving gear 81. Because the positions of the guide frame 98 and the rack block 99 are fixed, the storage box 6 can slide and translate inside the translation guide groove 91 through the rolling support wheel 95 on the support rod 96, and the storage box 6 as a whole can perform uniform translation work. During the translation process of the storage box 6, the periodic lifting and synergy of the support panel 65 and the thrust support rod 66 in the storage box 6 can prevent the seedlings from sticking. By adjusting the translation speed, scattering height and angle, the error rate is less than 5%. Compared with manual scattering, the efficiency is improved by 3-5 times, which is suitable for greenhouse rice planting.

[0057] Start the main drive motor 2 to drive the conveyor belt 3 to operate, and simultaneously activate the translation control motor 8 to drive the storage box 6 to translate at a uniform speed along the track. The lifting control motor 7 adjusts the inclination angle, translation speed and coverage of the conveying frame 1, and guides the support plate 64 to fit the conveyor belt 3 in real time to keep the throwing trajectory accurate;

[0058] For the vegetable greenhouse in southern Zhejiang, with a span of 8m and a length of 80m, two devices can be installed in parallel along the center line of the truss to achieve full coverage of the greenhouse. The theoretical seedling throwing capacity of a single device is 54,000 plants per hour, and the actual effective seedling throwing capacity is 45,900 plants per hour. Only one person is required to be responsible for seedling filling, which is 2-3 people collaboratively operated compared to the traditional large-scale seedling throwing machine, reducing labor costs by 50%. Compared with the backpack pneumatic seedling throwing device, it eliminates manual load-bearing operations, reduces labor intensity by 70%, and improves the uniformity of seedling throwing by more than 30%. The existing ground-based walking seedling throwing machines need to be equipped with complex walking mechanisms and power systems, and the manufacturing cost of a single machine is as high as 30,000 to 50,000 yuan. This device simplifies the structure, has no walking chassis and pneumatic system, and adopts a suspended design. The batch cost of a single machine can be controlled within the first batch of production to verify the key cost reduction measures, with a cost of ≈5,500 yuan. The second phase introduces domestically produced alternative components, with a cost of ≈5,000 yuan. The third phase realizes the localization of the entire supply chain, with a cost of ≈4,800 yuan.

[0059] The main drive motor 2, lifting control motor 7 and translation control motor 8 used in this device are well-known general components in the field of agricultural automation equipment. The mechanical connection and basic control logic start and stop, and speed regulation of the motor are mature technologies. The specific model parameters can be determined through conventional engineering calculations according to load requirements. The system debugging process belongs to the scope of conventional engineering implementation and does not constitute an improvement to the structure of the device body, so it will not be elaborated.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-propelled rice seedling throwing device for greenhouse rice, comprising a conveying frame (1), a main driving motor (2), a conveyor belt (3), an angle adjustment gear (4), a positioning support plate (5), a storage box (6), a lifting control motor (7), a translation control motor (8) and a combined guide frame (9), characterized in that: A main drive motor (2) is installed on the outer base of the front end of the conveying frame (1), and a conveyor belt (3) is installed around the middle end of the main drive motor (2), and the conveyor belt (3) is directly driven and connected to the motor through a roller. A cushion block (31) is provided on the outer surface of the conveyor belt (3), and an angle adjustment gear (4) and a positioning support plate (5) are installed on the outer shaft of the rear end of the conveyor belt (3), and a storage box (6) is installed on the top of the positioning support plate (5). A lifting control motor (7) and a translation control motor (8) are fixedly installed on the back of the storage box (6), and the translation control motor (8) is located below the lifting control motor (7). A combined guide frame (9) is installed at the rear of the storage box (6).

2. The self-propelled rice seedling throwing device for greenhouse according to claim 1, characterized in that: The pad (31) and the conveyor belt (3) are integrally formed, and the front side of the top end of the pad (31) is inclined at an angle. The pad (31) is arranged in a crescent structure. The pad (31) is distributed around the conveyor belt (3) at equal intervals, and the conveyor belt (3) is made of rubber material.

3. The self-propelled rice seedling throwing device for greenhouse according to claim 1, characterized in that: The angle adjustment gears (4) are symmetrically distributed on the conveying frame (1); the angle adjustment gears (4) are connected to the conveying frame (1) by being embedded and fixed; the conveying frame (1) is connected to the positioning support plate (5) by being hinged; the positioning support plate (5) is connected to the storage box (6) by being welded and fixed; and the rotation center point of the positioning support plate (5) and the conveying frame (1) is located at the rear end of the conveying frame (1).

4. The self-propelled rice seedling throwing device for greenhouse according to claim 1, characterized in that: The storage box (6) comprises a limit stop bar (61), a seedling guide partition (62), a partition plate (63), a guide support plate (64), a support panel (65), a thrust support rod (66), a driving cam (67), a connecting shaft (68) and a driven bevel gear (69). The limit stop bar (61) is welded and fixedly installed on the rear side of the top end of the storage box (6), and a seedling guide partition (62) and a partition plate (63) are fixedly installed at the lower part of the storage box (6). The seedling guide partition (62) divides the internal space of the storage box (6). The seedling storage bin is located above the seedling guide partition (62), and the seedling discharge channel is located behind the seedling guide partition (62). The partition plate (63) is connected to the seedling guide partition (62) by being embedded and fixed. The partition plate (63) divides the seedling discharge channel into two parts. The passage is divided into a plurality of independent passages, a guide support plate (64) is installed below the partition plate (63), and the top end of the guide support plate (64) is connected to the bottom frame rotation shaft of the storage box (6), a support panel (65) is installed inside the lower part of the seedling guide partition (62), and a thrust support rod (66) is arranged on the top surface of the support panel (65), and the thrust support rod (66) passes through the top surface of the seedling guide partition (62), a driving cam (67) is installed below the support panel (65), a connecting shaft (68) is fixedly installed at the rear end center of the driving cam (67), and the connecting shaft (68) passes through the rear end frame of the seedling guide partition (62), the partition plate (63) and the storage box (6), and a driven bevel gear (69) is fixedly installed at the rear end of the connecting shaft (68).

5. The self-propelled rice seedling throwing device for greenhouse according to claim 4, characterized in that: The bottom edge frame of the guide support plate (64) is rounded, and the guide support plate (64) naturally falls to the top surface of the conveyor belt (3) by tilting, and separates by external force or deadweight after contact.

6. The self-propelled rice seedling throwing device for greenhouse according to claim 4, characterized in that: The support panel (65) is fitted with the inner wall of the storage box (6) and the surface of the seedling guide partition (62), and the support panel (65) is restricted by the seedling guide partition (62) and is connected to the storage box (6) in a sliding lifting manner. The support panel (65) is fixedly connected to the thrust support rod (66) by being embedded, and the thrust support rod (66) is connected to the seedling guide partition (62) in a sliding manner, and the top surface of the seedling guide partition (62) is an inclined structure. The support panel (65) is connected to the driving cam (67) in a fitting manner, and the driving cam (67) is connected to the seedling guide partition (62), the partition plate (63) and the storage box (6) through a connecting shaft (68) in a bearing manner.

7. The self-propelled rice seedling throwing device for greenhouse according to claim 1, characterized in that: The lifting control motor (7) comprises a driving shaft (71), a lifting bracket (72) and a rack track (73); the output end of the lifting control motor (7) is inlaid and fixedly mounted with the driving shaft (71); the lifting bracket (72) is sleeved and mounted on the outer side of the driving shaft (71); and the bottom front side of the lifting bracket (72) is provided with a rack track (73); the rack track (73) is meshedly connected with the angle adjustment gear (4); the driving shaft (71) and the lifting bracket (72) are connected in a driving lifting connection; and the lifting bracket (72) and the outer surface of the storage box (6) are connected in a sliding manner.

8. The self-propelled rice seedling throwing device for greenhouse according to claim 4, characterized in that: The translation control motor (8) comprises a driving gear (81), a support shaft (82) and an active bevel gear (83); the driving gear (81) is embedded and fixedly installed at the output end of the translation control motor (8), and the support shaft (82) is embedded and fixedly installed at the center of the bottom surface of the driving gear (81); the active bevel gear (83) is welded and fixedly installed at the bottom end of the support shaft (82); and the active bevel gear (83) is meshedly connected with the driven bevel gear (69).

9. The self-propelled rice seedling throwing device for greenhouse according to claim 8, characterized in that: The combined guide frame (9) comprises a translation guide groove (91), a support groove (92), a reinforcement plate (93), a fixing bolt assembly (94), a rolling support wheel (95), a support support rod (96), a fixing support rod (97), a guide frame (98) and a rack block (99). The combined guide frame (9) is provided with a translation guide groove (91), and a support groove (92) is provided at the rear end of the combined guide frame (9). A reinforcement plate (93) is installed inside the support groove (92), and one end of the reinforcement plate (93) extends out of the support groove (92), and the length of the reinforcement plate (93) is equal to the support groove (92). The reinforcing plate (93) is fixedly connected to the combined guide frame (9) by a fixing bolt assembly (94), a rolling support wheel (95) is installed inside the translation guide groove (91), and a supporting support rod (96) is installed at the front end center of the rolling support wheel (95), a fixed support rod (97) is welded and fixedly installed on the top surface of the combined guide frame (9), and a guide frame (98) is welded and fixedly installed on the top end of the fixed support rod (97), and a rack block (99) is provided on the front surface of the guide frame (98), and the rack block (99) is meshed and connected with the driving gear (81).

10. The self-propelled rice seedling throwing device for greenhouse according to claim 9, characterized in that: The rolling support wheel (95) is connected to the combined guide frame (9) via the reinforcement plate (93) in a rolling and translational manner, and the reinforcement plate (93) is symmetrically distributed on the combined guide frame (9). The rolling support wheel (95) is connected to the support rod (96) in a bearing connection manner, and the support rod (96) is connected to the storage box (6) in a welding and fixing manner.

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