An automatic walking rice throwing device for greenhouse

Abstract

The present invention discloses a self - propelled rice throwing device for greenhouse, which includes a conveying frame, a main drive motor, a conveyor belt, an angle - adjusting gear, a positioning support plate, a storage box, a lifting control motor, a translation control motor and a combined guide frame. A main drive motor is installed on the outer base of the front end of the conveying frame, and a conveyor belt is sleeved around the middle end of the main drive motor. The conveyor belt is directly driven and connected to the motor through a roller. A cushion block is arranged on the outer surface of the conveyor belt. An angle - adjusting gear and a positioning support plate are installed on the outer - side rotating shaft at the rear end of the conveyor belt. For this self - propelled rice throwing device for greenhouse, through the engagement of the rack track and the angle - adjusting gear driven by the lifting control motor, the throwing angle of the seedlings can be accurately adjusted. According to the planting needs of different areas in the greenhouse, the design of adjusting the angle ensures the accurate throwing of the seedlings.

Description

Technical Field

[0001] The present invention relates to the technical field of greenhouse rice planting, and specifically to a self-propelled rice throwing device for greenhouses. Background Art

[0002] In recent years, the benefits of grain planting have been relatively low, while the development of protected vegetables has been rapid, increasing the pressure on grain production year by year. The issue of "grain bags" security has become increasingly prominent. To achieve stable grain production and increased efficiency, the greenhouse vegetable-rice rotation mode has been vigorously promoted and applied. The planting slots in the greenhouse vegetable-rice rotation mode are tight. Generally, the transplanting method is used for rice planting. However, the greenhouse doors are small, making it inconvenient for rice transplanters to enter and exit. Moreover, the space inside the greenhouse is narrow, and the transplanter operates inflexibly inside the greenhouse, resulting in low machine transplanting efficiency. The rice throwing planting method has the characteristics of light seedling injury, quick greening return, and early tillering, and is suitable for popularization and application in greenhouse rice planting.

[0003] Currently, the rice throwing technology in agricultural production mainly exists in two modes: manual and mechanical. Manual rice throwing has a high labor intensity and low operation efficiency, easily leading to uneven distribution of seedlings, requiring secondary replanting and affecting field management and seedling growth. Although mechanical rice throwing can relieve the labor burden, its device structure is complex and the seedling tray recycling is difficult. Especially in the process of multi-link seedling picking and feeding, the rotating mechanism is prone to damage the root system and nutrient soil of the seedlings, directly affecting the later live seedling and greening return effect. Both methods generally have problems such as poor control accuracy of row and plant spacing and insufficient field regularity when operating in narrow greenhouse areas. Moreover, the high-pressure air flow or mechanical impact during the operation of mechanical throwing equipment is more likely to cause secondary damage such as seedling breakage and root system damage, ultimately resulting in a decrease in survival rate.

[0004] For example, in the comparative document: An intelligent self-order rice throwing machine, publication number: CN118975450A, the overall volume is too large, and the outlet angle for throwing seedlings is fixed. The parabola is controlled by wind force, and the force throwing system requires relatively complex equipment such as a fan, pipeline, and nozzle, with a large initial investment. When working in a narrow space such as a greenhouse, it is easily affected and not suitable for rice planting work in greenhouses;

[0005] For example, in the comparative document: An intelligent catapult rice throwing machine for achieving orderly rice throwing and its control method, publication number: CN108235846A, it moves through crawlers in the field, causing damage to the land. And when moving on soft land, the overall will have local angle changes, affecting the throwing accuracy. At the same time, the seedlings are stacked in the hopper, and the bottom seedlings will be squeezed into blocks through the automatic discharging of the hopper switch baffle, affecting the feeding efficiency;

[0006] As a comparative document: a self-falling seedling throwing structure, publication number: CN115349332A. After clamping the seedlings by the clamping mechanism, the clamping mechanism releases the seedlings, and the seedlings fall into the hollow tube. The lifting mechanism controls the closing of the pressure cover and 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 is likely to cause damage to the seedlings during the clamping movement and the process of driving them into the field by air pressure. A silica gel layer is provided on the clamping side of the clamping mechanism. However, during the operation of the clamping mechanism, it will squeeze and position the seedlings, and the silica gel layer will also squeeze the seedlings. If the clamping force is insufficient, the seedlings will fall off.

[0007] Therefore, in order to improve the seedling throwing efficiency of greenhouse rice planting, a self-propelled 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 seedling throwing device for greenhouse rice, which solves the problems that in the existing greenhouse rice seedling throwing, in the narrow greenhouse space, it is often difficult to evenly distribute the seedlings and the seeding density, and during the seedling throwing process, when using mechanized equipment such as pneumatic spreading, especially when the seedlings are relatively fragile, the high pressure or impact of the machine may cause the seedlings to break or the roots to be damaged, affecting the survival rate, and the ground walking type machine needs to occupy the ground space in the greenhouse, especially in a narrow greenhouse environment, it is difficult to move flexibly, and it is easy to cause the machine to sink due to the muddy paddy field, increasing the operation difficulty.

[0009] To achieve the above purpose, the present invention provides the following technical solution: A self-propelled seedling throwing device for greenhouse rice, including a conveying frame, a main drive 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 main drive motor is installed on the outer base of the front end of the conveying frame, and the conveyor belt is sleeved around the middle end of the main drive motor. The conveyor belt is directly driven by a roller connected to the motor. A cushion block is arranged on the outer surface of the conveyor belt. The angle adjustment gear and the positioning support plate are installed on the outer shaft of the rear end of the conveyor belt, and the storage box is installed on the top of the positioning support plate. The lifting control motor and the translation control motor are fixedly installed on the back of the storage box, and the translation control motor is located below the lifting control motor. A combined guide frame is installed behind the storage box.

[0010] It can be seen that when carrying out seedling throwing work in the greenhouse, for traditional seedling throwing planting, it is operated by manual or auxiliary tools. These devices require manual operation. At the same time, during the mechanical seedling throwing process, due to the high-speed airflow or the vibration of the conveyor belt, it is easy to cause damage or breakage of the roots of the seedlings, affecting the survival rate and growth potential after transplantation.

[0011] Preferably, the cushion block and the conveyor belt are integrally formed, and the front side of the top end of the cushion block is inclined at an angle. The cushion block is arranged in a crescent structure, and the cushion blocks are distributed around the conveyor belt at equal intervals. The conveyor belt is made of rubber material. The angle adjustment gears are symmetrically distributed on the conveying frame. The connection mode of the angle adjustment gears and the conveying frame is inlaid and fixed. The connection mode of the conveying frame and the positioning support plate is hinged connection, and the connection mode of the positioning support plate and the storage box body is welded and fixed. Moreover, 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 solution, the angle adjustment gears are installed on the conveying frame. By rotating the position of the adjustment gears, the angle of the conveying frame under the storage box body can be changed. The positioning support plate can adjust the throwing angle of the seedlings according to actual needs through its hinged connection with the conveying frame.

[0013] It can be seen that through the design of the angle adjustment gears, the throwing angle of the seedlings can be flexibly adjusted, making the throwing of the seedlings more accurate and uniform. Compared with traditional manual or simple mechanical devices, this design provides higher flexibility and accuracy, ensuring that the operation requirements of different greenhouses can be met, avoiding the situation of over-dense or uneven distribution of seedlings, and thus improving the operation efficiency.

[0014] Preferably, the storage box body includes a limit stop bar, a seedling guiding partition board, a partition board, a guiding support plate, a support panel, a thrust support rod, a driving cam, a connecting shaft body and a driven bevel gear. A limit stop bar is fixedly welded and installed at the rear side of the top end of the storage box body, and a seedling guiding partition board and a partition board are fixedly installed below the interior of the storage box body. The seedling guiding partition board divides the interior space of the storage box body. Above the seedling guiding partition board is a seedling storage bin, and behind the seedling guiding partition board is a seedling discharge channel. The partition board is fixedly installed inlaid with the seedling guiding partition board. The partition board divides the seedling discharge channel into multiple independent channels. A guiding support plate is installed below the partition board, and the top end of the guiding support plate is rotationally connected to the bottom frame of the storage box body through a shaft. Inside the lower part of the seedling guiding partition board, a support panel is installed, and a thrust support rod is arranged on the top surface of the support panel. The thrust support rod penetrates through the top surface of the seedling guiding partition board. A driving cam is installed below the support panel. A connecting shaft body is fixedly installed at the center of the rear end of the driving cam, and the connecting shaft body penetrates through the rear frame of the seedling guiding partition board, the partition board and the storage box body. A driven bevel gear is fixedly installed at the rear end of the connecting shaft body. The bottom frame of the guiding support plate is provided with a rounded corner. The guiding support plate naturally falls obliquely onto the top surface of the conveyor belt and is separated by external force or its own weight after contact. The support panel is mutually attached to the inner wall of the storage box body and the surface of the seedling guiding partition board, and the support panel is in a sliding and lifting manner with the storage box body under the limitation of the seedling guiding partition board. The support panel is fixedly connected to the thrust support rod by inlaying, and the connection mode of the thrust support rod and the seedling guiding partition board is a sliding connection. Moreover, the top surface of the seedling guiding partition board is an inclined structure. The connection mode of the support panel and the driving cam is a fitting connection, and the connection mode of the driving cam and the seedling guiding partition board, the partition board and the storage box body through the connecting shaft body is a bearing connection.

[0015] In the above solution, a seedling guiding partition board and a partition board are arranged inside the storage box body. The seedling guiding partition board divides the interior space of the storage box body, which is used for storing seedlings and guiding the discharge of seedlings. Through the cooperation of the thrust support rod and the driving cam, the support panel can drive the thrust support rod to slide up and down under the guidance of the seedling guiding partition board, so as to loosen the seedlings in the storage box body, ensure that the seedlings can smoothly pass through the space between the partition boards, and the seedlings slide onto the guiding support plate and are discharged for feeding work. At the same time, the guiding support plate naturally falls obliquely onto the top surface of the conveyor belt. When the angle of the conveyor belt is adjusted, the guiding support plate is pushed by the external force of the conveyor belt to rotate. At the same time, at the inclined structure position of the guiding support plate, the guiding support plate remains attached to the conveyor belt by its own weight. The structure of the guiding support plate will not affect the conveying work of the cushion blocks on the seedlings, and the stability of the seedling conveying is maintained.

[0016] It can be seen that this structural design makes the storage and discharge of seedlings in the storage box more efficient and orderly. The support panel is matched and transformed according to the adjustment of the conveyor belt angle, which can effectively avoid the phenomenon of seedling accumulation or misalignment, so as to ensure that the seedlings are discharged evenly and orderly, improving the efficiency and accuracy of the operation. The continuous lifting and running of the thrust support rod avoids the extrusion and accumulation of seedlings at the lower part inside the storage box body and makes it impossible to discharge, improving the feeding efficiency.

[0017] Preferably, the lifting control motor includes a drive shaft, a lifting bracket and a rack track. The output end of the lifting control motor is fixedly installed with a drive shaft inlaid. A lifting bracket is sleeved outside the drive shaft, 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 drive shaft and the lifting bracket is drive and lift connection, and the connection mode between the lifting bracket and the outer surface of the storage box body is sliding fit.

[0018] In the above scheme, the lifting control motor drives the lifting bracket through the drive shaft. The rack track arranged on the lifting bracket is meshed with the angle adjustment gear. The sliding of the lifting bracket drives the rotation of the conveying frame to adjust the throwing angle of the seedlings. Through this angle adjustment method, the throwing angle can be flexibly adjusted according to the operation requirements of the greenhouse and the specific situation of the seedlings, making the seedling planting uniform.

[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 thrown at the most suitable angle, improving the flexibility and accuracy of the operation, adapting to different heights or ground undulations in the greenhouse, ensuring the uniform placement of the seedlings. Through precise angle adjustment, the problems of uneven density or poor growth caused by uneven placement of the seedlings are reduced, thus improving the survival rate of the crops and the subsequent growth effect.

[0020] Preferably, the translation control motor includes a drive gear, a support shaft and a driving bevel gear. The output end of the translation control motor is fixedly installed with a drive gear inlaid, and a support shaft is fixedly installed inlaid at the center of the bottom surface of the drive gear. A driving bevel gear is fixedly installed by welding at the bottom end of the support shaft. The driving bevel gear is meshed and connected with the driven bevel gear.

[0021] In the above scheme, the translation control motor cooperates with the thrust support rod through the driving bevel gear to carry out continuous lifting work. Through the meshing of the driving bevel gear and the driven bevel gear, the translation control motor can drive the driving cam to rotate continuously, push the support panel and the thrust support rod to lift, and carry out continuous loosening work to ensure that the seedlings can be stably discharged according to the needs.

[0022] It can be seen that the design of the translation control motor can ensure the stable and uniform discharge of the seedlings in the storage box through precise gear meshing and the lifting of the support panel. Through continuous loosening work, it avoids the damage of the seedlings caused by dense stacking during transportation. The translation control motor makes the seedling discharge process smoother, reduces the planting deviation caused by improper equipment operation, and ensures the uniformity and consistency of the seedlings during throwing.

[0023] Preferably, the combined guide frame includes a translation guide groove, a support groove, a reinforcement plate, a fixed bolt assembly, a rolling support wheel, a support rod, a fixed rod, a guide frame and a rack block. The combined guide frame is provided with a translation guide groove, and a support groove is opened on the back of the end of the combined guide frame. 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 through the fixed bolt assembly. A rolling support wheel is installed inside the translation guide groove, and a support rod is installed at the center of the front end of the rolling support wheel. A fixed rod is fixedly installed by welding on the top surface of the combined guide frame, and a guide frame is fixedly installed by welding at the top end of the fixed rod. A rack block is arranged on the front surface of the guide frame, and the rack block is meshed with the driving gear. The connection mode of the rolling support wheel and the combined guide frame through the reinforcement plate is rolling translation, and the reinforcement plates are symmetrically distributed on the combined guide frame. The connection mode of the rolling support wheel and the support rod is bearing connection, and the connection mode of the support rod and the storage box body is fixed by welding.

[0024] In the above scheme, through the cooperation of the translation guide groove and the rolling support wheel of the combined guide frame, the smooth movement of the storage box body can be realized. The connection mode of the support rod and the storage box body is fixed by welding, ensuring that the storage box body is stable and not prone to deviation during translation. The guide frame and the rack block are connected to the driving gear, so that the translation control motor drives the support panel and the thrust support rod to lift while driving the storage box body to translate.

[0025] It can be seen that the design of the combined guide frame effectively improves the stability and precision of the equipment, ensures the smooth movement of the storage box body during operation, reduces friction and energy consumption through the translation function of the rolling support wheel, and makes the equipment more efficient during work.

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

[0027] 1. By driving the meshing of the rack track and the angle adjustment gear through the lifting control motor, the seedling throwing angle can be accurately adjusted. According to the planting needs of different areas in the greenhouse, the angle adjustment design ensures the accurate throwing of the seedlings;

[0028] 2. Through precisely controlled gear meshing, the translation control motor ensures that the storage box can move smoothly. During the process of controlling the translation of the storage box, the linkage component loosens the seedlings inside the storage box to avoid stacking or misalignment, ensuring the stable discharge of the seedlings during transportation.

[0029] 3. The seedling guide partition and partition plate are arranged inside the storage box. The cooperation of the support panel and the thrust support rod is used to loosen the seedlings and ensure smooth discharge, avoiding seedling stacking and possible damage during transportation, ensuring that the seedlings can smoothly pass through the channels between the partition plates, with uniform and efficient discharge. Through the sliding and lifting of the support panel, the seedlings will not be blocked due to dense stacking, improving the feeding efficiency.

[0030] 4. This device is fixedly connected to the greenhouse truss through the combined guide frame and is installed above the ground in a suspended manner, without occupying ground space, solving the problems of difficult operation of the throwing machine in the narrow space inside the shed and the subsidence of paddy fields. The meshing transmission of the translation guide groove, rolling support wheels, driving gear, and rack block of the combined guide frame realizes the uniform self-walking of the device along the truss track. During the throwing process, there is no need for manual pushing, with stable and efficient operation. The combined guide frame reduces friction and energy consumption through the cooperation of the translation guide groove and rolling support wheels, improving the stability and accuracy of the equipment during operation, enhancing the stability of the storage box, making it not prone to deviation during translation, ensuring the accuracy of seedling placement, and improving the working efficiency of the equipment.

[0031] 5. The cushion block is integrally formed with the conveyor belt, and the cushion block is in the shape of a crescent with an inclined angle. The seedlings slide onto the cushion block to reduce the damage of the seedlings during transportation. The cushion blocks are evenly distributed around the surface of the conveyor belt in a ring shape, enhancing the smoothness of the transportation process. By precisely cooperating with the conveyor belt and adjusting the running speeds of the conveyor belt and the cushion blocks, the area where the seedlings are thrown can be controlled. At the same time, the cushion blocks increase the thrust during the seedling throwing process, improving the throwing efficiency. Since this device is located above the paddy field, the seedlings fall by the self-weight of the root matrix, effectively reducing energy consumption and maintaining the accuracy of the roots of the seedlings first falling onto the paddy field. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0035] Figure 4 is the three-dimensional structure schematic diagram 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] Figure 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] Figure 10 It is a schematic diagram of the three-dimensional structure of the combined guide frame of the present invention;

[0042] Figure 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 self-propelled rice seedling throwing device designed by the present invention includes a conveying frame 1, a main drive 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 guiding partition 62, a partition plate 63, a guiding support plate 64, a support panel 65, a thrust support rod 66, a driving cam 67, a connecting shaft body 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 a driving bevel gear 83. In the combined guide frame 9, it includes a translation guide groove 91, a support groove 92, a reinforcing plate 93, a fixing bolt assembly 94, a rolling support wheel 95, a support strut 96, a fixing strut 97, a guide frame 98, and a rack block 99.

[0047] As an embodiment of the present invention, refer to Figures 1 to 2 , the conveying frame 1, the main drive 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 rice seedling throwing device. The main drive motor 2 is installed on the front outer base of the conveying frame 1, and the middle end of the main drive motor 2 is sleeved and installed with the conveyor belt 3 around it. The conveyor belt 3 is directly driven and connected to the motor through a roller. The outer surface of the conveyor belt 3 is provided with cushion blocks 31. The outer side shaft at the rear end of the conveyor belt 3 is installed with an angle adjustment gear 4 and a positioning support plate 5, and the top of the positioning support plate 5 is installed with a storage box 6. The back of the storage box 6 is fixedly installed with a lifting control motor 7 and a translation control motor 8, and the translation control motor 8 is located below the lifting control motor 7. A combined guide frame 9 is installed behind the storage box 6.

[0048] As an embodiment of the present invention, refer to Figures 1 to 3 , the cushion block 31 and the conveyor belt 3 are integrally formed, and the front side at the top of the cushion block 31 is inclined at an angle. The cushion block 31 is arranged in a crescent structure, and the cushion blocks 31 are evenly distributed around the conveyor belt 3 at equal intervals, and the conveyor belt 3 is made of rubber material. The angle adjustment gears 4 are symmetrically distributed on the conveying frame 1, and the connection method between the angle adjustment gear 4 and the conveying frame 1 is inlaid and fixed. The connection method between the conveying frame 1 and the positioning support plate 5 is hinged connection, and the connection method between the positioning support plate 5 and the storage box 6 is welded and fixed. And the rotation center point between 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 conveying process and ensure the stable movement of the seedlings. The angle adjustment gears 4 are symmetrically distributed with the conveying frame 1, and by being inlaid and fixed on the conveying frame 1, the angle of the conveyor belt 3 can be accurately adjusted.

[0049] As an embodiment of the present invention, refer toFigures 4 to 8 , the storage box body 6 includes a limit stop bar 61, a seedling guiding partition plate 62, a partition plate 63, a guiding support plate 64, a support panel 65, a thrust support rod 66, a driving cam 67, a connecting shaft body 68 and a driven bevel gear 69. The limit stop bar 61 is fixedly installed by welding at the rear side of the top end of the storage box body 6, and the seedling guiding partition plate 62 and the partition plate 63 are fixedly installed at the lower part inside the storage box body 6. The seedling guiding partition plate 62 divides the internal space of the storage box body 6. The upper part of the seedling guiding partition plate 62 is the seedling storage bin, and the rear part of the seedling guiding partition plate 62 is the seedling discharge channel. The partition plate 63 is fixedly installed by embedding with the seedling guiding partition plate 62. The partition plate 63 divides the seedling discharge channel into multiple independent channels. The guiding support plate 64 is installed below the partition plate 63, and the top end of the guiding support plate 64 is rotationally connected to the bottom frame of the storage box body 6 by a shaft. Inside the lower part of the seedling guiding partition plate 62, a support panel 65 is installed, and a thrust support rod 66 is arranged on the top surface of the support panel 65. The thrust support rod 66 penetrates through the top surface of the seedling guiding partition plate 62. A driving cam 67 is installed below the support panel 65. A connecting shaft body 68 is fixedly installed at the center of the rear end of the driving cam 67, and the connecting shaft body 68 penetrates through the rear frames of the seedling guiding partition plate 62, the partition plate 63 and the storage box body 6. A driven bevel gear 69 is fixedly installed at the rear end of the connecting shaft body 68. The bottom frame of the guiding support plate 64 is provided with a rounded edge. The guiding support plate 64 naturally falls obliquely onto the top surface of the conveyor belt 3 and separates by external force or its own weight after contact. The support panel 65 is mutually attached to the inner wall of the storage box body 6 and the surface of the seedling guiding partition plate 62, and the support panel 65 is slidably lifted in the storage box body 6 under the restriction of the seedling guiding partition plate 62. The support panel 65 and the thrust support rod 66 are fixedly installed by embedding, and the connection mode of the thrust support rod 66 and the seedling guiding partition plate 62 is a sliding connection. Moreover, the top surface of the seedling guiding partition plate 62 is an inclined structure. The connection mode of the support panel 65 and the driving cam 67 is a fitting connection, and the connection mode of the driving cam 67 and the seedling guiding partition plate 62, the partition plate 63 and the storage box body 6 through the connecting shaft body 68 is a bearing connection. The storage box body 6 includes a limit stop bar 61, a seedling guiding partition plate 62, a partition plate 63, etc. The structural design can effectively divide the seedling storage and discharge areas. The seedling guiding partition plate 62 divides the internal space of the storage box body 6. The top is used for storing seedlings, and the bottom rear is used for discharging. The support panel 65, the thrust support rod 66 and the driving cam 67 cooperate together to loosen the bottom of the seedling storage area inside the storage box body 6 and improve the discharge efficiency.

[0050] As an implementation manner of the present invention, referring to Figure 2 and Figure 9, the lifting control motor 7 includes a drive shaft 71, a lifting bracket 72, and a rack track 73. The output end of the lifting control motor 7 is fixedly installed with the drive shaft 71 in an embedded manner. The outer side of the drive shaft 71 is sleeved with the lifting bracket 72, 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 drive shaft 71 and the lifting bracket 72 is a driving and lifting connection, and the connection mode between the lifting bracket 72 and the outer surface of the storage box body 6 is a sliding fit, ensuring that the lifting bracket 72 can accurately control the angle adjustment of the conveying frame 1 to achieve the precise placement of the seedlings.

[0051] As an implementation manner of the present invention, referring to Figure 2 and Figures 4 to 9 , the translation control motor 8 includes a drive gear 81, a support shaft 82, and a driving bevel gear 83. The output end of the translation control motor 8 is fixedly installed with the drive gear 81 in an embedded manner, and the center of the bottom surface of the drive gear 81 is fixedly installed with the support shaft 82 in an embedded manner. The bottom end of the support shaft 82 is fixedly installed with the driving bevel gear 83 by welding. The driving 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, and the driving bevel gear 83 is meshed and connected with the driven bevel gear 69 to enable continuous loosening of the seedlings inside the storage box body 6.

[0052] As an implementation manner of the present invention, referring to Figures 1 to 2 and Figures 9 to 11, the 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 rod 96, a fixing rod 97, a guide frame 98 and a rack block 99. A translation guide groove 91 is provided on the combined guide frame 9, 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 through the fixing bolt assembly 94. A rolling support wheel 95 is installed inside the translation guide groove 91, and a support rod 96 is installed at the center of the front end of the rolling support wheel 95. A fixing rod 97 is fixedly installed by welding on the top surface of the combined guide frame 9, and a guide frame 98 is fixedly installed by welding at the top end of the fixing rod 97. 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. The connection mode of the rolling support wheel 95 and the combined guide frame 9 through the reinforcement plate 93 is rolling translation, and the reinforcement plates 93 are symmetrically distributed on the combined guide frame 9. The connection mode of the rolling support wheel 95 and the support rod 96 is bearing connection, and the connection mode of the support rod 96 and the storage box body 6 is fixedly installed by welding. The rack block 99 is meshed with the driving gear 81. This device can be fixed on the greenhouse truss through the threaded holes and fasteners on the back of the combined guide frame 9. The stability of the laid line is improved between the combined guide frames 9 through the reinforcement plates 93 and the fixing bolt assembly 94. The translation guide grooves 91 of the combined guide frames 9 are 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. The driving gear 81 is meshed with the rack block 99, driving the whole storage box body 6 to translate along the track according to the translation guide groove 91 through the rolling support wheel 95 and the support rod 96, realizing the self-walking of the device and carrying out automatic seedling throwing work.

[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 the support groove 92, the reinforcement plate 93 and the fixing bolt assembly 94 to form a continuous translation track, adapting to the length requirements of different greenhouses. Only the first frame is installed with the support rod 96 and the rolling support wheel 95, and the remaining frames only need to provide the function of the translation guide groove 91 to reduce redundant costs. Insert the end of the support rod 96 into the reserved hole groove of the storage box body 6 and weld and reinforce it to ensure the 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] Power supply mode selection: Connect the lifting control motor 7, translation control motor 8, and main drive motor 2 to the greenhouse power supply system through the power cord, which is suitable for fixed long-term operations. Install a battery pack and a control chip in the storage box 6 to achieve mobile operations and adapt to environments without a stable power supply. The control chip can be programmed to set the spreading path, speed, and density, and supports remote operation or sensor linkage. Place the seedlings above the guiding partition 62 inside the storage box 6. The seedlings form a chute through the inclined design of the guiding partition 62 in cooperation with the partition 63, and the seedlings slide to the guiding support plate 64 by gravity. According to the guiding support plate 64, they precisely slide onto the outer surface of the conveyor belt 3. Cushion blocks 31 are added to the surface of the conveyor belt 3 to increase the friction force and prevent the seedlings from sliding, achieving uniform arrangement;

[0055] After the main drive motor 2 starts, it drives the conveyor belt 3 to rotate in a cycle. At the same time, it activates the translation control motor 8 to drive the drive gear 81 to move along the rack block 99. The storage box 6 slides in the translation guide groove 91 through the rolling wheels 95, achieving a uniform linear motion. The driving bevel gear 83 drives the connecting shaft body 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 periodically lifted, loosening the piled-up seedlings to ensure continuous feeding. During the operation of the conveyor belt 3, the conveyor belt 3 drives the cushion blocks 31 to rotate synchronously. The conveyor belt 3 drives the seedlings to be evenly and stably transported according to the cushion blocks 31. According to the start of the conveyor belt 3, the seedlings inside the storage box 6 are sequentially discharged for feeding. According to the required planting area in the greenhouse, the angular position of the conveying frame 1 is driven by the lifting control motor 7 to start and drive the drive shaft 71 to rotate. The drive shaft 71 can drive the lifting bracket 72 to perform lifting operations. 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, thereby adjusting the spreading angular position. The guiding support plate 64 can be rotationally connected to the storage box 6, and the guiding support plate 64 remains in contact with the conveyor belt 3. Adjust the rotation speed of the main drive motor 2 to control the spreading density, and combine the translation speed and the conveyor belt angle to achieve a linear spreading mode, covering different planting areas;

[0056] During the spreading and feeding process, when the translation control motor 8 starts, the translation control motor 8 can be meshed with the rack block 99 on the guiding frame 98 through the drive gear 81. Since the positions of the guiding frame 98 and the rack block 99 are fixed, the storage box 6 slides and translates inside the translation guide groove 91 through the rolling wheels 95 on the support rod 96. The whole storage box 6 can perform uniform translation work. During the translation of the storage box 6, the periodic jacking of the support panel 65 and the thrust support rod 66 inside the storage box 6 acts synergistically to prevent the seedlings from sticking. By adjusting the translation speed, spreading height, and angle, the error rate < 5%. Compared with manual spreading, the efficiency is increased 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 run, synchronously activate the translation control motor 8 to drive the storage box body 6 to translate uniformly along the track, adjust the inclination angle, translation speed and coverage range of the conveying frame 1 through the lifting control motor 7, and guide the supporting plate 64 to fit the conveyor belt 3 in real time to keep the throwing trajectory accurate;

[0058] For the facilities vegetable greenhouses in southern Zhejiang, with a span of 8m×length of 80m, installing 2 sets of this device side by side along the center line of the truss can achieve full greenhouse coverage. The theoretical throwing amount of a single device per hour is up to 54,000 plants, and the actual effective throwing amount per hour is 45,900 plants. Only 1 person is required to be responsible for seedling loading. Compared with traditional large-scale rice transplanters that require 2-3 people to operate in coordination, the labor cost is reduced by 50%. Compared with the backpack pneumatic rice transplanter, manual load-bearing operations are eliminated, the labor intensity is reduced by 70%, and the throwing uniformity is improved by more than 30%. Existing ground walking rice transplanters need to be equipped with complex walking mechanisms and power systems, and the single-machine manufacturing cost is as high as 30,000-50,000 yuan. However, this device simplifies the structure, has no walking chassis and pneumatic system, adopts a suspended design, and the single-machine batch cost can be controlled at about 5,500 yuan for the first batch of production verification of key cost reduction measures, about 5,000 yuan for the second phase of introducing domestic substitute components, and about 4,800 yuan for the third phase of realizing full supply chain localization;

[0059] The main drive motor 2, lifting control motor 7 and translation control motor 8 used in this device belong to well-known general components in the field of agricultural automation equipment. The mechanical connection and basic control logic start / stop and speed regulation of the motors are mature technologies. The specific model parameters can be determined through conventional engineering calculations according to the load requirements. The system debugging process belongs to the category 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 foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-propelled rice throwing device for greenhouse, comprising a conveying frame (1), a main drive 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 at the front end of the conveying frame (1), and a conveyor belt (3) is sleeved around the middle end of the main drive motor (2). The conveyor belt (3) is directly driven and connected to the motor through a roller. A cushion block (31) is arranged on the outer surface of the conveyor belt (3). The cushion block (31) is integrally formed with the conveyor belt (3), and the front side of the top end of the cushion block (31) is inclined at an angle. The cushion block (31) is arranged in a crescent structure. The cushion blocks (31) are distributed around the conveyor belt (3) at equal intervals, and the conveyor belt (3) is made of rubber material. An angle adjustment gear (4) and a positioning support plate (5) are installed on the outer shaft at the rear end of the conveyor belt (3), and a storage box body (6) is installed on the top end 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 body (6), and the translation control motor (8) is located below the lifting control motor (7). A combined guide frame (9) is installed behind the storage box body (6); The storage box body (6) includes a limit stop bar (61), a seedling guiding partition plate (62), a partition plate (63), a guiding support plate (64), a support panel (65), a thrust support rod (66), a driving cam (67), a connecting shaft body (68), and a driven bevel gear (69). A limit stop bar (61) is fixedly installed by welding on the rear side of the top end of the storage box body (6), and a seedling guiding partition plate (62) and a partition plate (63) are fixedly installed below the interior of the storage box body (6). The seedling guiding partition plate (62) divides the interior space of the storage box body (6). The upper part of the seedling guiding partition plate (62) is a seedling storage bin, and the rear part of the seedling guiding partition plate (62) is a seedling discharge channel. The partition plate (63) is fixedly installed in an inlaid manner with the seedling guiding partition plate (62). The partition plate (63) divides the seedling discharge channel into multiple independent channels. A guiding support plate (64) is installed below the partition plate (63), and the top end of the guiding support plate (64) is rotationally connected to the bottom frame of the storage box body (6) through a shaft. A support panel (65) is installed inside the lower part of the seedling guiding partition plate (62), and a thrust support rod (66) is arranged on the top surface of the support panel (65). The thrust support rod (66) penetrates through the top surface of the seedling guiding partition plate (62). A driving cam (67) is installed below the support panel (65). A connecting shaft body (68) is fixedly installed at the center of the rear end of the driving cam (67), and the connecting shaft body (68) penetrates through the rear frames of the seedling guiding partition plate (62), the partition plate (63), and the storage box body (6). A driven bevel gear (69) is fixedly installed at the rear end of the connecting shaft body (68).

2. The self-propelled rice 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 connection method between the angle adjustment gears (4) and the conveying frame (1) is inlaid and fixed. The connection method between the conveying frame (1) and the positioning support plate (5) is hinged connection. And the connection method between the positioning support plate (5) and the storage box body (6) is welded and fixed. Moreover, 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).

3. A self-propelled rice throwing device for greenhouse, according to claim 1, characterized in that: The bottom border of the guiding support plate (64) is rounded. The guiding support plate (64) naturally drops obliquely onto the top surface of the conveyor belt (3) and separates by external force or its own weight after contact.

4. A self-propelled rice throwing device for a greenhouse according to claim 1, characterized in that: The support panel (65) fits against the inner wall of the storage box body (6) and the surface of the seedling guiding partition plate (62). And the support panel (65) adopts a sliding lifting method with the storage box body (6) under the restriction of the seedling guiding partition plate (62). The support panel (65) and the thrust support rod (66) are connected by inlaid fixation. And the connection method between the thrust support rod (66) and the seedling guiding partition plate (62) is sliding connection. Moreover, the top surface of the seedling guiding partition plate (62) is an inclined structure. The connection method between the support panel (65) and the driving cam (67) is a fitting connection. And the driving cam (67) is connected to the seedling guiding partition plate (62), the partition plate (63) and the storage box body (6) by bearing connection through the connecting shaft body (68).

5. The self-propelled rice throwing device for greenhouse according to claim 1, characterized in that: The 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 fixedly installed with the driving shaft (71) by inlay. The outside of the driving shaft (71) is sleeved with the lifting bracket (72). 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 with the angle adjustment gear (4). The connection method between the driving shaft (71) and the lifting bracket (72) is driving and lifting connection. And the connection method between the lifting bracket (72) and the outer surface of the storage box body (6) is sliding fit.

6. The self-propelled rice throwing device for greenhouse according to claim 1, characterized in that: The translation control motor (8) includes a driving gear (81), a support shaft (82) and a driving bevel gear (83). The output end of the translation control motor (8) is fixedly installed with the driving gear (81) by inlay. And the center of the bottom surface of the driving gear (81) is fixedly installed with the support shaft (82) by welding. The bottom end of the support shaft (82) is fixedly installed with the driving bevel gear (83) by welding. The driving bevel gear (83) is meshed with the driven bevel gear (69).

7. The self-propelled rice throwing device for greenhouse according to claim 6, characterized in that: The 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 rod (96), a fixing rod (97), a guide frame (98) and a rack block (99). A translation guide groove (91) is provided on the combined guide frame (9), and a support groove (92) is provided on the back surface 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) through the fixing bolt assembly (94). A rolling support wheel (95) is installed inside the translation guide groove (91), and a support rod (96) is installed at the center of the front end of the rolling support wheel (95). A fixing rod (97) is fixedly installed by welding on the top surface of the combined guide frame (9), and a guide frame (98) is fixedly installed by welding at the top end of the fixing rod (97). A rack block (99) is provided on the front surface of the guide frame (98), and the rack block (99) is meshed with the driving gear (81).

8. The self-propelled rice throwing device for greenhouse according to claim 7, characterized in that: The connection mode of the rolling support wheel (95) and the combined guide frame (9) through the reinforcement plate (93) is rolling translation, and the reinforcement plates (93) are symmetrically distributed on the combined guide frame (9). The connection mode of the rolling support wheel (95) and the support rod (96) is bearing connection, and the connection mode of the support rod (96) and the storage box body (6) is fixed by welding.

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