Small-sized hand-held pepper harvester

Abstract

The invention provides a small hand-held pepper harvester which comprises a driving mechanism, a frame, a variable row spacing picking mechanism and a lifting mechanism, the driving mechanism is connected with the frame, the variable row spacing picking mechanism and the lifting mechanism are installed on the frame, the variable row spacing picking mechanism comprises a set of spiral picking rollers, and the spiral picking rollers are connected with the frame. The upper ends of the two spiral picking rollers are respectively provided with a gear set, the lifting mechanisms are symmetrically installed on the two sides of the line-spacing-variable picking mechanism and located below the line-spacing-variable picking mechanism, a harvested material placing position is arranged at the rear end of the frame, and the upper ends of the lifting mechanisms are in butt joint with the harvested material placing position. According to the small walking type pepper harvester, the line spacing of the spiral picking rollers can be adjusted according to different plots and plant sizes, the adaptability and efficiency of harvesting are improved, by adjusting the line spacing, mistaken harvesting can be reduced, and excessive damage to plants is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pepper harvesting machinery and equipment, in particular to a small hand-held pepper harvester. Background Art

[0002] The entire growth period of peppers requires a lot of labor, and manual harvesting is costly and inefficient. If the peppers cannot be harvested and dried in time, it is easy to cause product waste and reduce commodity conversion rate. Therefore, efficient pepper harvesting machinery has become an urgent need.

[0003] At present, there are two main types of pepper harvesters: comb-tooth type and spiral roller type. The spiral roller type pepper harvester harvests peppers through the pulling force generated by the high-speed rotating spiral roller. The spiral roller has a small range of action and can effectively reduce stem breakage. The spiral steel rod contacts the pepper at a point contact, with a small contact area, which can reduce the breakage rate of the harvested pepper.

[0004] Although spiral roller pepper harvesters perform well in reducing the breakage rate of peppers, the existing spiral roller design has an obvious shortcoming: the width of the spiral roller is fixed and cannot be adjusted according to changes in plant size. This results in different effects of the spiral roller during the harvesting of peppers in different plots and at different growth stages, which may affect the quality and efficiency of harvesting. For example, in plots with denser or larger plants, spiral rollers with fixed widths may miss some peppers; while in plots with sparser or smaller plants, the spiral rollers may over-contact the plants, causing unnecessary damage. Summary of the invention

[0005] Aiming at the problem that the width of the spiral roller of a spiral roller pepper harvester is fixed and cannot be adjusted according to changes in plant size, the present invention provides a small hand-held pepper harvester with variable row spacing.

[0006] The solution adopted by the present invention to solve its technical problem is: a small hand-held pepper harvester, including a driving mechanism, a frame, a variable row spacing picking mechanism and a lifting mechanism, the driving mechanism is connected to the frame, and the variable row spacing picking mechanism and the lifting mechanism are installed on the frame.

[0007] The variable row spacing picking mechanism includes a group of spiral picking rollers, which are installed in the middle of the frame at an angle, and a spiral picking roller lower bearing seat is arranged on the lower side of the front end of the frame, and the front end of the spiral picking roller is installed on the spiral picking roller lower bearing seat, and a linear guide is fixed on the upper side of the rear end of the frame, and a group of linear guide sliders are symmetrically installed on the linear guide, and a bearing seat with a lead screw is installed on each linear guide slider, and a lead screw is arranged on the side of the bearing seat with a lead screw, and the two lead screws are arranged opposite to each other, and an adjusting rod is installed on the two lead screws, and screw holes are arranged at both ends of the adjusting rod, and the two lead screws are respectively screwed into the corresponding screw holes, and the external threads arranged on the two lead screws are in opposite directions, and by rotating the adjusting screw, the lead screws on both sides can move into the screw hole or move out of the screw hole at the same time, thereby making the linear guide sliders on both sides approach or move away.

[0008] The upper ends of the two spiral picking rollers are respectively equipped with gear sets, which drive the spiral picking rollers to rotate through the gear sets; the gear sets include a driven gear installed at the upper ends of the spiral picking rollers, the driven gear is meshed with a steering wheel, a first connecting plate is installed between the driven gear and the steering wheel, the driven gear and the steering wheel are respectively installed at two ends of the first connecting plate, the steering wheel is also meshed with a driving gear, a second connecting plate is installed between the steering wheel and the driving gear, the steering wheel and the driving gear are respectively installed at two ends of the second connecting plate, a fixing plate is also fixed at the rear end of the frame, a group of gear shafts are symmetrically arranged on the fixing plate, the driving gear of each group of gear sets is sleeved on the corresponding gear shaft, and a driven bevel gear is concentrically arranged on the driving gear of one group of gear sets; second bearing seats are fixed on both sides of the rear end of the frame, a hexagonal shaft is installed between the second bearing seats, a second driven sprocket and a driving bevel gear are sleeved on the hexagonal shaft, the driving bevel gear is meshed with the driven bevel gear for transmission, and the second driven sprocket is connected to the driving mechanism through a chain.

[0009] A set of lifting mechanisms are symmetrically installed on both sides of the variable row spacing picking mechanism. The lifting mechanisms are located below the variable row spacing picking mechanism. A harvested material placement area is provided at the rear end of the frame, and the upper end of the lifting mechanism is connected to the harvested material placement area.

[0010] Furthermore, the lifting mechanism includes an active roller, which is mounted on a hexagonal shaft and located on both sides of the variable row spacing picking mechanism. An intermediate roller shaft and a driven roller shaft are installed on the lower side of the front end of the frame. The intermediate roller is mounted on the intermediate roller shaft, and the driven roller is mounted on the driven roller shaft. A conveyor belt is wound around the active roller, the intermediate roller and the driven roller. A pressure wheel is also arranged on the intermediate roller shaft, and the pressure wheel is located above the conveyor belt. The conveyor belt is fitted to the intermediate roller through the pressure wheel.

[0011] Furthermore, baffles are evenly arranged laterally on the outer surface of the conveyor belt, and the harvested peppers are conveyed to a harvested material placement area arranged at the rear end of the frame through the baffles.

[0012] Furthermore, the driving mechanism includes a chassis, a rear driving wheel is installed below the chassis through an axle, a first driven sprocket is installed on the axle, an engine and a gearbox are installed above the chassis, a driving pulley is installed on the output shaft of the engine, a driven pulley is installed on the input shaft of the gearbox, the driving pulley and the driven pulley are connected by a V-belt transmission, the gearbox is provided with two output shafts, the input shaft of the gearbox is transmission-connected to the output shaft of the gearbox, a first output sprocket and a second output sprocket are respectively installed on the two output shafts of the gearbox, wherein the first output sprocket is transmission-connected to the first driven sprocket on the axle through a chain, thereby driving the rear driving wheel to rotate, driving the pepper harvester to move, the chassis of the driving mechanism is connected to the frame, the second driven sprocket on the hexagonal shaft is transmission-connected to the second output sprocket through a chain, thereby driving the hexagonal shaft and the spiral picking roller to rotate.

[0013] Furthermore, it also includes a folding mechanism, which includes a group of dial wheels symmetrically installed at the front end of the frame, an upper bearing seat is installed on the top of the front end of the frame, and a lower bearing seat is installed on the frame bottom frame corresponding to the upper bearing seat, and the dial wheel is vertically installed through the upper and lower bearing seats, and the dial wheel includes a main shaft, and levers are evenly arranged on the surface of the main shaft. When the dial wheel rotates, the lever can gather the pepper vines to the middle of the two dial wheels, and the main shaft of the dial wheel extends to the bottom of the frame, and a second bevel gear is installed on the extension section. A first bearing seat is installed under the frame, and a transmission shaft is horizontally installed under the frame through the first bearing seat, and a first bevel gear is installed on the transmission shaft. The first bevel gear and the second bevel gear are meshed for transmission, and a third driven sprocket is installed at the end of the transmission shaft facing the outside of the frame, and the third driven sprocket is transmission-connected to the lifting mechanism.

[0014] Furthermore, it also includes a pepper cutting mechanism, a carrier plate is arranged between the lower bearing seat of the spiral picking roller and the bearing seat with a lead screw, the carrier plate is located below the spiral picking roller, and multiple groups of pepper cutting mechanisms are evenly arranged on the carrier plate, the pepper cutting mechanism includes a group of side plates, the side of the side plate facing the spiral picking roller is arranged in an arc shape, and the arc shape is concentric with the spiral picking roller, two rows of symmetrical pressure measuring rollers are installed at the rear end of the side plate, the pressure measuring rollers include a guide seat and a groove seat, the guide seat is fixed on the carrier plate, the guide seat is provided with a pressure measuring hole and a guide hole, and a rubber roller is installed in the groove of the groove seat A pressure shaft and a positioning shaft are provided on the side of the groove seat facing the guide seat, wherein the pressure shaft is inserted into the pressure measuring hole, and the positioning shaft is inserted into the guide hole. A pressure spring is provided between the guide seat and the groove seat, and the pressure spring is sleeved on the positioning shaft. When the peppers rolled up by the spiral picking roller are transported to the lifting mechanisms on both sides, the peppers pass through the side plates of the pepper cutting mechanism and the pressure measuring rollers. The peppers can push the pressure measuring rollers on both sides, so that the groove seat compresses the pressure spring and moves toward the guide seat. A pressure sensor is installed between the guide seat and the pressure shaft, and the compressed pressure measuring roller can trigger the pressure sensor.

[0015] A guide arc is arranged between adjacent pepper cutting mechanisms, and the guide arc is arranged between the side plates of adjacent pepper cutting mechanisms, and the edge of the guide arc is connected to the arc-shaped edge of the side; the pepper cutting mechanism is also equipped with a cutter, and the cutter is installed on the outer side of the side plate, and a penetrating knife edge is arranged on the side plate, and the blade of the cutter passes through the knife edge toward between the side plates of the pepper cutting mechanism, and a pop-up mechanism is fixed on the carrier plate on the outer side of the side plate, and the cutter is installed on the pop-up mechanism. The pop-up mechanism can be used to push the cutter between the side plates, and the pepper stalk is cut by the cutter, so that the pepper is disconnected from the pepper vine; a PLC controller is installed on the frame, and the pressure sensor and the cylinder are connected to the PLC controller. The pressure change is monitored by the pressure sensor, so that the PLC controller controls the cutter to extend to cut the pepper stalk.

[0016] Furthermore, a pepper guide roller is installed between the arc-shaped upper ends of the side plates, and the pepper guide roller can push the peppers transported to the pepper cutting mechanism to between the side plates and the pressure measuring roller.

[0017] Furthermore, an anti-hair-dropping brush is installed below the spiral picking roller, and the anti-hair-dropping brush is fixed in the middle of the frame.

[0018] Furthermore, a harvesting guide plate is arranged at the lower part of the front end of the frame. The harvesting guide plate is trapezoidal and is symmetrically installed on both sides of the front end of the frame. The width between the harvesting guide plates decreases from the outside to the inside.

[0019] Furthermore, a material collecting guide plate is fixed on the frame above the lifting mechanism, and the material collecting guide plate cover is buckled above the place where the harvested materials are placed.

[0020] Beneficial effects of the present invention: The row spacing of the spiral picking rollers of the small walk-behind pepper harvester provided by the present invention can be adjusted according to different plots and plant sizes, thereby improving the adaptability and efficiency of harvesting. In plots with densely populated plants, spiral picking rollers with fixed row spacing may miss some peppers. By adjusting the row spacing, it is possible to ensure that the spiral picking rollers cover more plants and reduce missed picking. In plots with sparsely populated plants, spiral picking rollers with fixed row spacing may over-contact the plants, causing unnecessary damage. By adjusting the row spacing, it is possible to reduce mis-picking and avoid excessive damage to the plants.

[0021] At the same time, the present invention also provides a pepper cutting mechanism, which controls the cutter through a PLC controller and a pressure sensor, and timely cuts off the connection between the pepper and the pepper seedling, thereby preventing the leaves and stems of the pepper plant from being drawn into the roller to cause plant damage and affect the subsequent growth of the pepper. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2It is a side structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the top view of the structure of the present invention; Figure 4 It is a front structural schematic diagram of the present invention; Figure 5 It is a structural schematic diagram of a variable row spacing picking mechanism; Figure 6 It is a structural diagram of the lifting mechanism; Figure 7 It is a schematic diagram of the gear drive structure of the variable row spacing picking mechanism; Figure 8 It is a structural diagram of the pepper cutting mechanism; Fig. 9 It is a partial three-dimensional structural diagram of a pepper cutting mechanism; Fig.10 This is a diagram of the pepper picking and cutting process; Fig.11 It is a schematic diagram of the three-dimensional structure of the pressure measuring roller; Fig.12 It is a schematic diagram of the side structure of the pressure measuring roller; Fig.13 This is a partial enlarged view of the pepper cutting mechanism.

[0023] Markings in the figure: 1, frame; 2, upper bearing seat; 3, conveyor belt; 4, spiral picking roller; 5, collecting guide plate; 6, gearbox; 7, engine; 8, rear drive wheel; 9, second bearing seat; 10, baffle; 14, harvesting guide plate; 15, lower bearing seat; 16, universal wheel; 17, third driven sprocket; 18, lower bearing seat of spiral picking roller; 19, third driving sprocket; 20, first connecting plate; 21, second connecting plate; 22, driven pulley ; 23. Driving pulley; 24. Frame handle; 25. First driven sprocket; 26. First output sprocket; 27. Second output sprocket; 28. Harvested material placement; 29. ​​Anti-hair-dropping brush; 30. Feeding wheel; 31. Hexagonal shaft; 32. Bearing seat with screw rod; 33. Adjusting rod; 34. Driven gear; 35. Linear guide slider; 36. Steering wheel; 37. Linear guide; 38. Fixed plate; 39. Second driven sprocket; 40. Driving gear; 42. Active bevel gear; 43. Driven bevel gear; 44. First bearing seat; 45. Transmission shaft; 46. Second bevel gear; 47. First bevel gear; 48. Universal wheel height adjustment crank; 49. Active roller; 50. Pressure roller; 51. Intermediate roller; 52. Intermediate roller shaft; 53. Driven roller shaft; 54. Driven roller; 55. Carrier plate; 56. Pressure measuring roller; 57. Transmission rubber ring; 58. Chili guide roller; 59. Guide arc; 60. Side plate; 61. Rubber ring groove; 62. Groove seat; 63. Rubber roller; 64. Guide seat; 65. Pressure spring; 66. Pressure shaft; 67. Positioning shaft; 68. Cutter; 69. Pressure sensor; 70. Arc guide plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below.

[0025] Example 1: Figure 1 As shown, the present invention provides a small-sized walk-behind pepper harvester, which comprises a driving mechanism, a frame 1, a folding mechanism, a variable row spacing picking mechanism and a lifting mechanism.

[0026] like Figure 2 As shown, the driving mechanism includes a chassis, a rear driving wheel 8 is installed below the chassis through an axle, a first driven sprocket 25 is installed on the axle, an engine 7 and a gearbox 6 are installed above the chassis, and a frame 1 handle 24 is also provided on the driving mechanism, and the pepper harvester is pushed and controlled by the frame 1 handle 24.

[0027] like Figure 3As shown, a driving pulley 23 is installed on the output shaft of the engine 7, and a driven pulley 22 is installed on the input shaft of the gearbox 6. The driving pulley 23 and the driven pulley 22 are connected by a V-belt transmission. The gearbox 6 is provided with two output shafts, and the input shaft of the gearbox 6 is transmission-connected to the output shaft of the gearbox 6. A first output sprocket 26 and a second output sprocket 27 are respectively installed on the two output shafts of the gearbox 6, wherein the first output sprocket 26 is transmission-connected to the first driven sprocket 25 on the wheel axle through a chain, thereby driving the rear drive wheel 8 to rotate, thereby driving the pepper harvester to move.

[0028] The chassis of the driving mechanism is connected to the frame 1, and the folding mechanism, the variable row spacing picking mechanism and the lifting mechanism are installed on the frame 1. Universal wheels 16 are installed on both sides of the front end of the frame 1, and the universal wheels 16 are provided with a lifting wheel frame, and a universal wheel 16 height adjustment crank 48 is installed on the wheel frame. The height of the universal wheel 16 can be adjusted by the crank, so that the frame 1 can maintain a suitable angle with the ground.

[0029] The lower part of the front end of the frame 1 is provided with a harvesting guide plate 14, which is trapezoidal and symmetrically mounted on both sides of the front end of the frame 1. The width between the harvesting guide plates 14 decreases from the outside to the inside. The pepper harvester is a forward-moving type, and the pepper plants can gather toward the center of the harvester along the harvesting guide plate 14, so that the pepper seedlings enter the middle of the variable row spacing picking mechanism to complete the harvesting of peppers.

[0030] like Figure 1 and Figure 4 As shown, the folding mechanism includes a group of sending wheels 30 symmetrically installed at the front end of the frame 1, an upper bearing seat 2 is installed on the top of the front end of the frame 1, and a lower bearing seat 15 is installed on the bottom frame of the frame 1 corresponding to the upper bearing seat 2. The sending wheel 30 is vertically installed through the upper and lower bearing seats 15. The sending wheel 30 includes a main shaft, and a shift rod is evenly arranged on the surface of the main shaft. When the sending wheel 30 rotates, the shift rod can gather the pepper vines to the middle of the two sending wheels 30. The main shaft of the sending wheel 30 extends below the frame 1, and a second bevel gear 46 is installed in the extension section. A first bearing seat 44 is installed below the frame 1, and a transmission shaft 45 is horizontally installed below the frame 1 through the first bearing seat 44. A first bevel gear 47 is installed on the transmission shaft 45. The first bevel gear 47 is meshed with the second bevel gear 46 for transmission, and a third driven sprocket 17 is installed at the end of the transmission shaft 45 facing the outside of the frame 1.

[0031] like Figure 3 and Figure 5As shown, the variable row spacing picking mechanism includes a group of spiral picking rollers, and an anti-hair-dropping brush 29 is installed below the spiral picking rollers. The anti-hair-dropping brush 29 is fixed in the middle of the frame 1. The spiral picking rollers include a central shaft and two harvesting rods spirally wound on the outside of the central shaft. A gap is left between the harvesting rods and the central shaft for clamping the peppers for picking. During the harvesting operation, the peppers are between the spiral picking rollers, and the peppers are in contact with the left spiral roller or the right spiral roller. The peppers instantly follow the movement of the spiral harvesting rods. Through the relative rotation of the spiral picking rollers, the spiral harvesting rods roll the peppers, drag the peppers off the pepper plants, and transport them to the lifting mechanism to complete the harvesting.

[0032] When the spiral picking rollers are harvesting peppers, the peppers are between the two pairs of rollers. The smaller the distance between the rollers, the easier it is for the spiral harvesting rod to act on the peppers and the more complete the harvesting. However, it will also cause secondary squeezing damage to the peppers. The larger the distance between the rollers, the less damage to the peppers, but it is easy to miss the peppers. Therefore, the distance between the spiral picking rollers needs to be adjusted to achieve better harvesting results.

[0033] The spiral picking roller is installed obliquely in the middle of the frame 1, and a spiral picking roller lower bearing seat 18 is arranged on the lower side of the front end of the frame 1, and the front end of the spiral picking roller is installed on the spiral picking roller lower bearing seat 18, and a linear guide 37 is fixed on the upper side of the rear end of the frame 1, and a group of linear guide 37 sliders 35 are symmetrically installed on the linear guide 37, and a bearing seat 32 with a screw is installed on each linear guide 37 slider 35, and a screw is arranged on the side of the bearing seat 32 with a screw, and the two screws are arranged opposite to each other, and an adjusting rod 33 is installed on the two screws, and screw holes are arranged at both ends of the adjusting rod 33, and the two screws are respectively screwed into the corresponding screw holes, and the external threads arranged on the two screws are in opposite directions. By rotating the adjusting screw, the screws on both sides can move into the screw holes or out of the screw holes at the same time, so that the linear guide 37 sliders 35 on both sides are close to or away from each other.

[0034] Gear sets are respectively installed on the upper ends of the two spiral picking rollers, and the spiral picking rollers are driven to rotate through the gear sets.

[0035] like Figure 7As shown, the gear set includes a driven gear 34 installed on the upper end of the spiral picking roller, the driven gear 34 is meshed with a steering wheel 36, a first connecting plate 20 is installed between the driven gear 34 and the steering wheel 36, the driven gear 34 and the steering wheel 36 are respectively installed at both ends of the first connecting plate 20, the steering wheel 36 is also meshed with a driving gear 40, a second connecting plate 21 is installed between the steering wheel 36 and the driving gear 40, the steering wheel 36 and the driving gear 40 are respectively installed at both ends of the second connecting plate 21, a fixing plate 38 is also fixed at the rear end of the frame 1, a group of gear shafts are symmetrically arranged on the fixing plate 38, the driving gear 40 of each group of gear sets is sleeved on the corresponding gear shaft, and a driven bevel gear 43 is concentrically arranged on the driving gear 40 of one group of gear sets.

[0036] The connecting plate can fix the position of the corresponding gears to ensure that the gears are always meshed. The steering wheel 36 is located at the intersection of the two connecting plates and can move with the folding and unfolding of the connecting plates without affecting the meshing of the gears. When the distance between the sliders 35 on both sides is adjusted by adjusting the pull rod 33, the sliders 35 can pull the hinged connecting plates to unfold or fold, thereby changing the spacing between the upper ends of the spiral picking rollers.

[0037] The stems and leaves at the roots of the pepper vines are relatively concentrated, and the lower end of the obliquely installed spiral picking roller only needs to connect with the roots of the pepper vines, and the upper part of the spiral picking roller harvests the upper fluffy position of the pepper vines. Therefore, the pepper harvester provided by the present invention adopts an upper spacing adjustment method to adapt to the size of the pepper plants.

[0038] The lower bearing seat 18 of the spiral picking roller is bolted to the frame 1 through a flange or the like, and screw holes with different spacings can be provided on the frame 1. When necessary, the lower bearing seat 18 of the spiral picking roller is installed on the screw holes with different spacings to adjust the spacing of the lower end of the spiral picking roller.

[0039] The lower bearing seat 18 of the spiral picking roller is a spherical bearing seat. When the upper end of the spiral picking roller changes pitch, the spherical bearing seat can deflect to avoid affecting the rotation of the spiral picking roller.

[0040] Second bearing seats 9 are fixed on both sides of the rear end of the frame 1, and a hexagonal shaft 31 is installed between the second bearing seats 9. The hexagonal shaft 31 is mounted with a second driven sprocket 39 and a driving bevel gear 42. The driving bevel gear 42 is meshed with the driven bevel gear 43 for transmission. The second driven sprocket 39 is connected to the second output sprocket 27 through a chain, thereby driving the hexagonal shaft 31 and the spiral picking roller to rotate.

[0041] like Figure 3 As shown, a set of lifting mechanisms are symmetrically installed on both sides of the variable row spacing picking mechanism. Figure 6As shown, the lifting mechanism includes an active roller 49, which is mounted on the hexagonal shaft 31 and located on both sides of the variable row spacing picking mechanism. An intermediate roller shaft 52 and a driven roller shaft 53 are installed on the lower side of the front end of the frame 1. The intermediate roller 51 is mounted on the intermediate roller shaft 52, and the driven roller 54 is mounted on the driven roller shaft 53. A conveyor belt is wound around the active roller 49, the intermediate roller 51 and the driven roller 54. A clamping wheel 50 is also provided on the intermediate roller shaft 52. The clamping wheel 50 is located above the conveyor belt. The conveyor belt is fitted with the intermediate roller 51 through the clamping wheel 50. Baffles 10 are evenly and laterally arranged on the outer surface of the conveyor belt, and the harvested peppers are conveyed to the harvested material placement 28 set at the rear end of the frame 1 through the baffles 10.

[0042] The third driving sprocket 19 is installed on the driven roller shaft 53 of the lifting mechanism, and the third driven sprocket 17 is connected to the third driving sprocket 19 through a chain transmission, so that the transmission wheel 30 is driven to rotate when the lifting mechanism is running.

[0043] A material collecting guide plate 5 is fixed on the frame 1 above the lifting mechanism, and a cover buckle of the material collecting guide plate 5 is installed above the harvested material placement 28.

[0044] like Figure 8 As shown, a carrier plate 55 is arranged between the lower bearing seat 18 of the spiral picking roller and the bearing seat with a lead screw 32 . The carrier plate 55 is located below the spiral picking roller, and pepper cutting mechanisms are evenly arranged on the carrier plate 55 .

[0045] like Fig. 9 and Fig.10 As shown, the pepper cutting mechanism includes a set of side plates 60, and the side of the side plate 60 facing the spiral picking roller is set to an arc shape, and the arc is concentric with the spiral picking roller, and two rows of symmetrical pressure measuring rollers 56 are installed at the rear end of the side plate 60.

[0046] like Fig.11 and Fig.12 As shown, the pressure measuring roller 56 includes a guide seat 64 and a groove seat 62, the guide seat 64 is fixed on the carrier plate 55, and a pressure measuring hole and a guide hole are arranged on the guide seat 64, a rubber roller 63 is installed in the groove of the groove seat 62, and a pressure shaft 66 and a positioning shaft 67 are arranged on the side of the groove seat 62 facing the guide seat 64, wherein the pressure shaft 66 is inserted into the pressure measuring hole, and the positioning shaft 67 is inserted into the guide hole, and a pressure spring 65 is arranged between the guide seat 64 and the groove seat 62, and the pressure spring 65 is sleeved on the positioning shaft 67.

[0047] like Fig.13As shown, when the peppers wound up by the spiral picking rollers are transported to the lifting mechanisms on both sides, the peppers pass through the side plates 60 of the pepper cutting mechanism and the pressure measuring rollers 56. The peppers can push the pressure measuring rollers 56 on both sides, causing the groove seat 62 to compress the pressure spring 65 and move it toward the guide seat 64. A pressure sensor 69 is installed between the guide seat 64 and the pressure shaft 66. The compressed pressure measuring tube wheel can trigger the pressure sensor 69.

[0048] A guide arc 59 is provided between adjacent pepper cutting mechanisms. The guide arc 59 is provided between the side plates 60 of the adjacent pepper cutting mechanisms. The edge of the guide arc 59 is connected to the arc-shaped edge of the side.

[0049] The pepper cutting mechanism is also equipped with a cutter 68, which is installed on the outer side of the side plate 60. The side plate 60 is provided with a penetrating knife edge. The blade of the cutter 68 passes through the knife edge toward the side plates 60 of the pepper cutting mechanism. A pop-up mechanism is fixed on the carrier plate 55 on the outer side of the side plate 60. The cutter 68 is installed on the pop-up mechanism. The pop-up mechanism can be used to push the cutter 68 between the side plates 60, and the pepper stalk is cut by the cutter 68, so that the pepper is separated from the pepper vine.

[0050] The ejection mechanism can adopt an electric push rod or a cylinder, and a PLC controller is installed on the frame 1. The pressure sensor 69 and the cylinder are connected to the PLC controller, and the pressure measuring rollers 56 are numbered according to the distance from the spiral picking roller. When the pressure measuring roller 56 close to the spiral picking roller monitors the pressure change and the pressure measuring roller 56 far from the spiral picking roller monitors the pressure value, the PLC controller controls the cutter 68 to extend to cut the pepper stalk.

[0051] A pepper guide roller 58 is also installed between the arc-shaped upper ends of the side plates 60 , and the pepper guide roller 58 can push the peppers transported to the pepper cutting mechanism to between the side plates 60 and the pressure measuring roller 56 .

[0052] Specific working process: by adjusting the pull rod 33 and the screw rod to adjust the row spacing of the spiral picking roller to adapt to different plant sizes, start the engine 7, and through the transmission system of the gearbox 6, the rear drive wheel 8 starts to rotate to move the machine forward. The harvesting guide plate 14 at the front end of the frame 1 guides the pepper vine to the bottom of the spiral picking roller. The spiral picking roller rolls the pepper from the plant onto the spiral harvesting rod through the pulling force generated by the rotation. The rolled pepper is thrown to both sides during the movement and transported to the cutting mechanism.

[0053] like Fig.10 As shown, an arc-shaped guide plate 70 is further provided on the spiral picking roller, and the rolled peppers are transported to between the pressure measuring rollers 56 through the arc-shaped guide plate.

[0054] Using the width of the pepper, the pepper squeezes the pressure measuring rollers 56 on both sides to contract, and the pressure measuring rollers 56 trigger the pressure sensor 69, and the pepper continues to move to both sides. When the pepper stalk moves between the pressure measuring rollers 56, the roller close to the spiral picking roller pops out, and the pressure value of the pressure sensor 69 returns to zero. The roller away from the spiral picking roller still clamps the pepper to generate pressure feedback. The PLC controller determines the position of the pepper stalk based on the feedback changes of the front and rear pressure values, and starts the cutter 68 to pop out and cut off the pepper stalk, so as to avoid the spiral picking rollers continuously winding up the pepper vines and causing damage to the plants, affecting the subsequent growth of the pepper vines. The cut peppers are transported to the conveyor belt 3, and are lifted and collected by the conveyor belt 3 to the harvest material placement 28, completing the harvesting of the peppers.

[0055] The spiral picking roller wraps around the harder peppers and drags them, thereby pulling the peppers off the plants and harvesting the peppers. The connection between the peppers and the plants is relatively firm, and the plants will be directly pulled into the rollers during the dragging process, pulling the plants and leaves off, causing serious damage to the plants. The gap between the spiral picking rollers is large, and small peppers and flexible leaves will not be rolled into the rollers, causing no damage to the leaves and plants; only when dragging larger peppers will the spiral picking rollers get stuck in the peppers, rolling the peppers with leaves and stems into the rollers, causing plant damage and affecting the subsequent growth of the peppers. The cutting mechanism provided by the present invention accurately determines the movement position of the peppers through the feedback of the pressure sensor 69, cuts off the pepper stalks, and disconnects the peppers from the vines, thereby preventing the peppers from damaging the pepper vines during the harvesting process.

[0056] Further Fig.11 and Fig.12 As shown, a rubber ring groove 61 is provided in the middle of the rubber roller 63 of the pressure measuring roller 56, and a transmission rubber ring 57 is mounted on the rubber roller 63, and the transmission rubber ring 57 is inserted into the rubber ring groove 61. A driving motor is installed on the outer pressure measuring roller 56, and the driving motor drives the rubber roller 63 of the outer pressure measuring roller 56 to rotate actively, so that the pressure measuring roller 56 connected in series with the transmission rubber ring 57 rotates synchronously.

[0057] When the peppers enter between the pressure measuring rollers 56, the rubber roller 63 is actively rotated to transport the peppers to the lifting mechanism, thereby further improving the harvesting efficiency of the peppers.

[0058] The installation position of the driving motor can be flexibly set, as long as the motor can drive one of the rubber rollers 63 to rotate, the rubber rollers 63 of the parallel pressure measuring rollers 56 can be driven to rotate synchronously through the transmission rubber ring 57. A tensioning wheel can also be added to tighten the transmission rubber ring 57 to improve the transmission efficiency.

[0059] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A small hand-held pepper harvester, characterized in that: The invention comprises a driving mechanism, a frame (1), a variable row spacing picking mechanism and a lifting mechanism, wherein the driving mechanism is connected to the frame (1), and the variable row spacing picking mechanism and the lifting mechanism are installed on the frame (1); the variable row spacing picking mechanism comprises a group of spiral picking rollers (4), the spiral picking rollers (4) are obliquely installed in the middle of the frame (1), a spiral picking roller lower bearing seat (18) is arranged at the lower side of the front end of the frame (1), the front end of the spiral picking roller (4) is installed on the spiral picking roller lower bearing seat (18), a linear guide rail (37) is fixed on the upper side of the rear end of the frame (1), a group of linear guide rail sliders (35) are symmetrically installed on the linear guide rail (37), and each linear guide rail slider (35) is installed A bearing seat with a screw (32) is provided, a screw is arranged on the side of the bearing seat with a screw (32), and the two screws are arranged opposite to each other. An adjusting rod (33) is installed on the two screws. Screw holes are arranged at both ends of the adjusting rod (33). The two screws are respectively screwed into the corresponding screw holes. The external threads arranged on the two screws are in opposite directions. By rotating the adjusting screw, the screws on both sides can move into the screw holes or move out of the screw holes at the same time, so that the linear guide sliders (35) on both sides are moved closer or farther away; gear sets are respectively installed on the upper ends of the two spiral picking rollers (4), and the spiral picking rollers (4) are driven to rotate by the gear sets; the gear sets include a driven gear (34) installed on the upper ends of the spiral picking rollers (4), The driven gear (34) is meshed with a steering wheel (36), a first connecting plate (20) is installed between the driven gear (34) and the steering wheel (36), the driven gear (34) and the steering wheel (36) are respectively installed at two ends of the first connecting plate (20), the steering wheel (36) is also meshed with a driving gear (40), a second connecting plate (21) is installed between the steering wheel (36) and the driving gear (40), the steering wheel (36) and the driving gear (40) are respectively installed at two ends of the second connecting plate (21), a fixing plate (38) is also fixed at the rear end of the vehicle frame (1), a group of gear shafts are symmetrically arranged on the fixing plate (38), the driving gear (40) of each group of gears is sleeved on the corresponding gear shaft, and one of the groups of gears A driven bevel gear (43) is concentrically arranged on the driving gear (40) of the group; a second bearing seat (9) is fixed on both sides of the rear end of the frame (1); a hexagonal shaft (31) is installed between the second bearing seats (9); a second driven sprocket (39) and a driving bevel gear (42) are sleeved on the hexagonal shaft (31); the driving bevel gear (42) and the driven bevel gear (43) are meshed and driven; the second driven sprocket (39) is connected to the driving mechanism through a chain; a group of lifting mechanisms are symmetrically installed on both sides of the variable row spacing picking mechanism, the lifting mechanisms are located below the variable row spacing picking mechanism, a harvested material placement place (28) is arranged at the rear end of the frame (1), and the upper end of the lifting mechanism is connected to the harvested material placement place (28).

2. The small hand-held pepper harvester according to claim 1 is characterized in that: The lifting mechanism comprises a driving roller (49), the driving roller (49) being mounted on a hexagonal shaft (31) and being located on both sides of a variable row spacing picking mechanism, an intermediate roller shaft (52) and a driven roller shaft (53) being mounted on the lower side of the front end of the frame (1), an intermediate roller (51) being mounted on the intermediate roller shaft (52), and a driven roller being mounted on the driven roller shaft (53), a conveyor belt (3) being wound around the driving roller (49), the intermediate roller (51) and the driven roller, a clamping wheel (50) being further arranged on the intermediate roller shaft (52), the clamping wheel (50) being located above the conveyor belt (3), and the conveyor belt (3) being fitted to the intermediate roller (51) by the clamping wheel (50).

3. The small hand-held pepper harvester according to claim 2 is characterized in that: Baffles (10) are evenly arranged in a transverse manner on the outer surface of the conveyor belt (3), and the harvested peppers are conveyed to a harvested material placement area (28) arranged at the rear end of the frame (1) through the baffles (10).

4. The small hand-held pepper harvester according to claim 1 is characterized in that: The driving mechanism comprises a chassis, a rear driving wheel (8) is mounted below the chassis via a wheel axle, a first driven sprocket (25) is mounted on the wheel axle, an engine (7) and a gearbox (6) are mounted above the chassis, a driving pulley (23) is mounted on the output shaft of the engine (7), a driven pulley (22) is mounted on the input shaft of the gearbox (6), the driving pulley (23) and the driven pulley (22) are connected via a V-belt transmission, the gearbox (6) is provided with two output shafts, the input shaft of the gearbox (6) is connected to the output shaft of the gearbox (6) via a V-belt transmission. A first output sprocket (26) and a second output sprocket (27) are respectively mounted on two output shafts of the gearbox (6), wherein the first output sprocket (26) is connected to a first driven sprocket (25) on the wheel shaft via a chain, thereby driving the rear drive wheel (8) to rotate and driving the pepper harvester to move, the chassis of the driving mechanism is connected to the frame (1), and the second driven sprocket (39) on the hexagonal shaft (31) is connected to the second output sprocket (27) via a chain, thereby driving the hexagonal shaft (31) and the spiral picking roller (4) to rotate.

5. The small walk-behind pepper harvester according to claim 1, characterized in that: The vehicle also includes a folding mechanism, the folding mechanism including a group of symmetrically mounted sending wheels (30) at the front end of the vehicle frame (1), an upper bearing seat (2) being mounted on the top of the front end of the vehicle frame (1), a lower bearing seat (15) being mounted on the bottom frame of the vehicle frame (1) corresponding to the upper bearing seat (2), the sending wheel (30) being vertically mounted through the upper and lower bearing seats, the sending wheel (30) including a main shaft, and levers being evenly arranged on the surface of the main shaft, and when the sending wheel (30) is rotated, the levers can gather the pepper vines to the middle of the two sending wheels (30), and the main shaft of the sending wheel (30) is axially oriented. The vehicle frame (1) extends below the vehicle frame, a second bevel gear (46) is installed on the extension section, a first bearing seat (44) is installed below the vehicle frame (1), a transmission shaft (45) is installed transversely below the vehicle frame (1) through the first bearing seat (44), a first bevel gear (47) is installed on the transmission shaft (45), the first bevel gear (47) and the second bevel gear (46) are meshed for transmission, a third driven sprocket (17) is installed on the end of the transmission shaft (45) facing the outside of the vehicle frame (1), and the third driven sprocket (17) is transmission-connected to the lifting mechanism.

6. The small hand-held pepper harvester according to claim 1, characterized in that: The invention also comprises a pepper cutting mechanism, wherein a carrier plate (55) is arranged between the lower bearing seat (18) of the spiral picking roller and the bearing seat with a screw rod (32), the carrier plate (55) being located below the spiral picking roller (4), and a plurality of pepper cutting mechanisms are evenly arranged on the carrier plate (55), the pepper cutting mechanism comprising a group of side plates (60), the side of the side plates (60) facing the spiral picking roller (4) being arranged in an arc shape, and the arc shape is concentric with the spiral picking roller (4), two rows of symmetrical pressure measuring rollers (56) are installed at the rear end of the side plates (60), the pressure measuring rollers (56) comprising a guide seat (64) and a groove seat (62), the guide seat (64) being fixed on the carrier plate (55), the guide seat (64) being provided with a pressure measuring hole and a guide hole, a rubber roller (63) being installed in the groove of the groove seat (62), and the groove seat (62) ) A pressure shaft (66) and a positioning shaft (67) are provided on one side facing the guide seat (64), wherein the pressure shaft (66) is inserted into the pressure measuring hole, and the positioning shaft (67) is inserted into the guide hole. A pressure spring (65) is provided between the guide seat (64) and the groove seat (62), and the pressure spring (65) is sleeved on the positioning shaft (67). When the peppers rolled up by the spiral picking roller (4) are transported to the lifting mechanisms on both sides, the peppers pass through the side plates (60) of the pepper cutting mechanism and the pressure measuring rollers (56), and the peppers can push the pressure measuring rollers (56) on both sides, so that the groove seat (62) compresses the pressure spring (65) and moves toward the guide seat (64). A pressure sensor (69) is installed between the guide seat (64) and the pressure shaft (66), and the compressed pressure measuring roller can trigger the pressure sensor (69); A guide arc (59) is provided between adjacent pepper cutting mechanisms, the guide arc (59) being provided between the side plates (60) of the adjacent pepper cutting mechanisms, and the edge of the guide arc (59) being connected to the arc-shaped edge of the side; The chili cutting mechanism is also provided with a cutter (68), the cutter (68) being installed on the outside of the side plate (60), the side plate (60) being provided with a through-cutting edge, the blade of the cutter (68) passing through the cutting edge towards between the side plates (60) of the chili cutting mechanism, a pop-up mechanism being fixed on the carrier plate (55) outside the side plate (60), the cutter (68) being installed on the pop-up mechanism, the cutter (68) being able to be pushed out between the side plates (60) by the pop-up mechanism, the chili stem being cut by the cutter (68), and the chili being separated from the chili vine; A PLC controller is installed on the vehicle frame (1), and the pressure sensor (69) and the cylinder are both connected to the PLC controller. The PLC controller controls the cutter (68) to extend and cut the pepper stem according to the pressure change monitored by the pressure sensor (69).

7. The small hand-held pepper harvester according to claim 6, characterized in that: A pepper guide roller (58) is also installed between the arc-shaped upper ends of the side plates (60), and the pepper guide roller (58) can push the peppers transported to the pepper cutting mechanism to between the side plates (60) and the pressure measuring roller (56).

8. The small hand-held pepper harvester according to claim 1, characterized in that: An anti-hair-dropping brush (29) is installed below the spiral picking roller (4), and the anti-hair-dropping brush (29) is fixed to the middle of the vehicle frame (1).

9. The small walk-behind pepper harvester according to claim 1, characterized in that: A harvesting guide plate (14) is provided at the lower part of the front end of the vehicle frame (1). The harvesting guide plate (14) is trapezoidal and is symmetrically mounted on both sides of the front end of the vehicle frame (1). The width between the harvesting guide plates (14) decreases from the outside to the inside.

10. The small hand-held pepper harvester according to claim 1, characterized in that: A material collecting guide plate (5) is fixed on the vehicle frame (1) above the lifting mechanism, and the material collecting guide plate (5) is buckled above the harvested material placement area (28).

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