Dual-purpose header test stand

Abstract

This invention relates to the field of agricultural machinery technology and is used to test the ear-picking and stalk-feeding processes after stalk cutting. It allows for adjustments to the cutting position, header spacing, ear-picking roller speed, and feeding auger speed, enabling orthogonal experiments. The system includes a header, a main frame, and a test platform frame. The header comprises a header frame, a cutting mechanism, and a harvesting assembly. The cutting mechanism is located at the front end of the header frame. The harvesting assembly includes a harvester frame, harvesting sprockets, ear-picking rollers, and a support component. The rear end of the harvester frame is hinged to the header frame, and the support component is located between the header frame and the harvester frame. The test platform frame is hinged to the main frame, and an angle adjustment component allows for adjusting the relative angle between the two frames. A conveyor is movably mounted on the test platform frame, and a horizontal adjustment mechanism is provided to adjust the left and right positions of the conveyor. This invention can test the ear-picking and stalk-feeding processes after stalk cutting.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a combined harvesting platform test bench for both ear and stem harvesting. Background Technology

[0002] Corn ear and stalk harvesters can harvest both corn ears and stalks simultaneously, ensuring national food security and the sustainable development of the livestock industry while bringing double income to corn growers. They have become a new growth point in the agricultural machinery industry. However, the limitations of existing machines are becoming increasingly prominent. These limitations are mainly reflected in the fact that most domestic corn ear and stalk harvesters are modified from traditional corn harvesters, lacking overall design and optimization. They suffer from poor matching between the ear and stalk harvesting headers, excessive weight of the front header, and increased ear picking losses, which affect the overall operation quality and efficiency of the machine. Summary of the Invention

[0003] The purpose of this invention is to provide a combined ear and stem harvesting test bench for testing the ear picking process and stem feeding process after stem cutting. It enables adjustment of cutting position, cutter spacing, ear picking roller speed and feeding auger speed, and conducts orthogonal experiments.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a double-cropping test platform for both ear and stem harvesting, including a cutting platform, a main frame and a test platform frame;

[0005] The header includes a header frame, a cutting mechanism, and a harvesting assembly. The header frame is fixed to the main frame. The cutting mechanism is located at the front end of the header frame. The harvesting assembly includes a harvester frame, harvesting sprockets, a picking roller, and a support member. The rear end of the harvester frame is hinged to the header frame. The lower end of the support member is hinged to the header frame, and the upper end of the support member is hinged to the harvester frame. The length of the support member is adjustable and lockable. The harvesting sprockets are arranged in two sets, one on the left and one on the right, with several harvesting sprockets in each set connected together. The machine is equipped with a harvesting chain, on which there are equally spaced paddles; there are two picking rollers arranged on the left and right sides and rotatably connected to the harvester frame; when the length of the support is adjusted, the distance between the harvesting components and the cutting mechanism is changed, thereby realizing the adjustment of the header spacing; the rear side of the cutting mechanism has a stalk feeding auger, which is rotatably connected to the header frame; the header frame has a drive mechanism that drives the stalk feeding auger, the picking rollers and the harvesting sprocket to rotate, and the speed of the stalk feeding auger and the picking rollers is adjusted by the drive mechanism;

[0006] The test bench frame is hinged to the main frame and has an angle adjustment component between them to adjust the relative angle of the test bench frame. A conveyor for conveying stalks is movably mounted on the test bench frame, and the test bench frame has a horizontal adjustment mechanism for adjusting the left and right positions of the conveyor. The angle adjustment component drives the test bench frame to swing relative to the main frame, and the horizontal adjustment mechanism adjusts the left and right positions of the conveyor to adjust the cutting position.

[0007] Furthermore, the cutting mechanism includes fixed blades and moving blades. The fixed blades are multiple blades arranged at equal intervals and fixedly connected to the cutting table frame. The moving blades penetrate all the fixed blades.

[0008] Furthermore, the support member includes a sleeve, an inner rod, and a nut. The inner rod has two parts and external threads. The first end of the first inner rod is hinged to the harvester frame ear plate at the bottom of the harvester frame, and the second end of the first inner rod extends into the first end of the sleeve. The first end of the second inner rod is hinged to the harvester frame ear plate on the header frame, and the second end of the second inner rod extends into the second end of the sleeve. Nuts are rotatably installed at both ends of the sleeve, and the nuts are threadedly connected to the corresponding inner rods to lock the length of the support member.

[0009] Furthermore, multiple sprockets are rotatably mounted on the harvester frame, and sprockets are connected by sprocket chains. One of the sprockets is coaxially arranged with a harvester sprocket on the right side.

[0010] Furthermore, the cutting table frame has a reducer, the output end of the reducer has a reducer output shaft, a swing arm is fixed on the reducer output shaft, and the lower end of the swing arm has a drive gear; one end of the moving blade has a rack portion, and when the swing arm swings back and forth, the drive gear meshes with the rack portion to drive the moving blade to move back and forth.

[0011] Furthermore, the drive mechanism includes a drive shaft, a main shaft, a header housing, a drive pulley, a driven pulley, a chain drive mechanism, and the header housing. The main shaft is rotatably mounted on the header frame. The first end of the drive shaft is connected to the first end of the main shaft via a universal joint. The drive pulley is fixed to the second end of the main shaft, and the driven pulley is fixed to the input end of the reducer. A belt is fitted between the drive pulley and the driven pulley. The header housing is fixed to the harvester frame. The header housing contains a gear set. A chain drive mechanism is provided between the input end of the gear set and the second end of the main shaft, and between the stalk feeding auger and the second end of the main shaft. The gear set has multiple output ends, and each output end is fixedly connected to a corresponding harvesting sprocket, a reeling sprocket, and a picking roller.

[0012] Furthermore, the horizontal adjustment mechanism includes a lead screw, a lead screw nut, and a horizontal adjustment motor. The lead screw is rotatably mounted on the test bench support, the lead screw nut is assembled on the lead screw, the horizontal adjustment motor is fixed on the test bench support and drives the rotation of the lead screw, and the conveyor frame of the conveyor is fixedly connected to the lead screw nut.

[0013] Furthermore, the horizontal adjustment mechanism includes a horizontal adjustment sprocket, a horizontal adjustment chain, and a horizontal adjustment motor. The horizontal adjustment sprocket is rotatably mounted on the test bench support. The horizontal adjustment chain is assembled between two horizontal adjustment sprockets. The horizontal adjustment motor is fixed on the test bench support and drives the rotation of one of the horizontal adjustment sprockets. The conveyor frame of the conveyor is fixedly connected to the horizontal adjustment chain.

[0014] Furthermore, the tilt adjustment component is a cylinder, the test bench frame is located on the front side of the main frame and the rear end of the test bench frame is hinged to the front end of the main frame, the cylinder barrel is hinged to the front end of the main frame, and the piston rod of the cylinder is hinged to the front end of the test bench frame.

[0015] The beneficial effects of this invention are as follows: By configuring the support components, the height of the harvesting assembly relative to the cutting mechanism can be adjusted, thereby adjusting the header spacing to investigate the impact of header spacing on ear and stalk harvesting. By configuring the drive mechanism, the rotational speeds of the stalk feeding auger, ear-picking roller, and harvesting sprocket can be adjusted, thus studying the effects of different rotational speeds on ear and stalk harvesting. By configuring the tilt adjustment component and the horizontal adjustment mechanism, the cutting position can be adjusted, thus studying the impact of different cutting positions on ear and stalk harvesting. Through adjusting the above-mentioned different parameters, the effects on ear and stalk harvesting are studied. Attached Figure Description

[0016] Figure 1 This is the front view of the cutting table;

[0017] Figure 2 This is a top view of the cutting platform;

[0018] Figure 3 This is the right view of the cutting table;

[0019] Figure 4 A bottom view of the harvesting component;

[0020] Figure 5 This is a top view of the test bench of the present invention;

[0021] In the diagram: 1. Cutting table frame; 11. Transmission mechanism housing; 2. Cutting mechanism; 21. Fixed blade; 22. Moving blade; 221. 3. Rack and pinion section, 3. Stalk feeding auger, 31. First spiral blade, 32. Pulley, 4. Harvesting assembly, 41. Harvesting sprocket, 42. Harvesting chain, 43. Pulley block, 44. Reeling sprocket, 45. Support component, 451. Sleeve, 452. Inner rod, 453. Nut, 46. Harvester frame, 461. Harvester frame ear plate, 47. Pin, 48. Pulley plate, 49. Reeling chain, 5. Harvesting roller, 51. Second spiral blade, 6. Reducer, 61. Reducer output shaft, 62. Swing arm, 7. Main shaft, 71. Drive shaft, 72. Drive pulley, 73. Belt, 74. Driven pulley, 75. Chain drive mechanism, 8. Drive component, 9. Conveyor, 91. Conveyor frame, 10. Main frame, 12. Test bench frame, 13. Lead screw, 14. Horizontal adjustment motor, 15. Lead screw nut, 16. Crossbeam, 17. Crossbeam ear plate, 18. Cylinder, 19. Cutting table housing. Detailed Implementation

[0022] like Figures 1 to 5 As shown, the present invention includes a cutting table, a main frame 10, and a test bench frame 12. The structure and working principle of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 5 As shown, the combined spike and stem harvesting test bench includes a harvesting platform, a main frame 10, and a test bench frame 12, as follows: Figures 1 to 3 As shown, the header includes a header frame 1, a cutting mechanism 2, and a harvesting assembly 4, as follows: Figure 5 As shown, the header frame 1 is fixed on the main frame 10, and the cutting mechanism 2 is located at the front end of the header frame 1. The cutting mechanism includes fixed blades 21 and moving blades 22. Multiple fixed blades 21 are evenly spaced and fixedly connected to the header frame 1. The moving blades 22 penetrate all the fixed blades 21. The moving blades 22 are serrated, and when they move relative to the fixed blades 21, they work together to cut the straw.

[0024] like Figure 1 , Figure 2 As shown, the harvesting assembly 4 includes a harvester frame 46, a harvesting sprocket 41, a picking roller 5, and a support member 45, as follows: Figure 5 As shown, the rear end of the harvester frame 46 is hinged to the header frame 1. Specifically, as... Figure 2As shown, the rear end of the header frame 1 has a crossbeam 16, and a crossbeam ear plate 17 is fixed to the crossbeam 16 by bolts. The rear end of the harvester frame 46 is hinged to the crossbeam ear plate 17 by a pin 47. The lower end of the support member 45 is hinged to the header frame 1, and the upper end of the support member 45 is hinged to the harvester frame 46. The length of the support member 45 is adjustable and lockable. Specifically, the support member 45 includes a sleeve 451, an inner rod 452, and a nut 453. There are two inner rods 452, and the inner rods 452 have external threads. The first end of the first inner rod 452 is hinged to the harvester frame ear plate 461 at the bottom of the harvester frame 46, and the second end of the first inner rod 452 extends into the first end of the sleeve 451. The first end of the second inner rod 452 is hinged to the header frame ear plate on the header frame 1, and the second end of the second inner rod 452 extends into the second end of the sleeve 451. Nuts 453 are rotatably mounted at both ends of the sleeve 451. The nuts 453 are threadedly connected to the corresponding inner rod 452 to lock the length of the support member 45. The header frame ear plates are fixed to the header frame 1 with bolts. By loosening the nuts 453 and moving the inner rod 452 along its length, the length of the inner rod 452 extending into the sleeve 451 is adjusted, thereby adjusting the length of the support member 45. Adjusting the length of the support member 45 changes the distance between the harvesting assembly 4 and the cutting mechanism 2, thus adjusting the header spacing.

[0025] like Figure 2 As shown, there are two sets of harvesting sprockets 41 arranged left and right. A harvesting chain 42 is fitted between several harvesting sprockets 41 in each set, and the harvesting chain 42 has equally spaced pry blocks 43. There are two picking rollers 5 arranged left and right and rotatably connected to the harvester frame 46. The rear side of the cutting mechanism 2 has a stalk feeding auger 3, which is rotatably connected to the header frame 1. The header frame 1 has a drive mechanism that drives the stalk feeding auger 3, the picking rollers 5, and the harvesting sprockets 41 to rotate. The speed of the stalk feeding auger 3 and the picking rollers 5 is adjusted by the drive mechanism. The outer wall of the picking roller 5 has a second spiral blade 51 for conveying and picking the ears of grain.

[0026] The test bench frame 12 is hinged to the main frame 10, and there is a tilt adjustment component between them to adjust the relative angle of the test bench frame 12. Specifically, the tilt adjustment component is a cylinder 18. The test bench frame 12 is located on the front side of the main frame 10, and the rear end of the test bench frame 12 is hinged to the front end of the main frame 10. The cylinder barrel of the cylinder 18 is hinged to the front end of the main frame 10, and the piston rod of the cylinder 18 is hinged to the front end of the test bench frame 12.

[0027] A conveyor 9 for conveying stalks is movably mounted on the test bench frame 12, and the test bench frame 12 has a horizontal adjustment mechanism for adjusting the left and right positions of the conveyor 9.

[0028] As the first implementation of the horizontal adjustment mechanism, such as Figure 5 As shown, the horizontal adjustment mechanism includes a lead screw 13, a lead screw nut 15, and a horizontal adjustment motor 14. The lead screw 13 is rotatably mounted on the test bench support 12, the lead screw nut 15 is assembled on the lead screw 13, and the horizontal adjustment motor 14 is fixed on the test bench support 12 and drives the rotation of the lead screw 13. The conveyor frame 91 of the conveyor 9 is fixedly connected to the lead screw nut 15. After the horizontal adjustment motor 14 is started, the lead screw 13 rotates, which in turn drives the lead screw nut 15 to move, and in turn drives the conveyor 9 to move left and right.

[0029] As a second embodiment of the horizontal adjustment mechanism, the horizontal adjustment mechanism includes a horizontal adjustment sprocket, a horizontal adjustment chain, and a horizontal adjustment motor 14. The horizontal adjustment sprocket is rotatably mounted on the test bench support 12, the horizontal adjustment chain is assembled between the two horizontal adjustment sprockets, the horizontal adjustment motor 14 is fixed on the test bench support 12 and drives the rotation of one of the horizontal adjustment sprockets, and the conveyor frame 91 of the conveyor 9 is fixedly connected to the horizontal adjustment chain.

[0030] The tilt adjustment mechanism drives the test bench frame 12 to swing relative to the main frame 10, and the horizontal adjustment mechanism adjusts the left and right positions of the conveyor 9 to achieve the adjustment of the cutting position.

[0031] like Figure 2 As shown, multiple reeling sprockets 44 are rotatably mounted on the harvester frame 46, and a reeling chain 49 is fitted between the reeling sprockets 44. One of the reeling sprockets 44 is coaxially arranged with a harvesting sprocket 41 on the right side, so the reeling sprocket 44 and the harvesting sprocket 41 on the right side rotate simultaneously. Several equally spaced lever plates 48, which are made of rubber, are fixed on the reeling chain 49. When the reeling chain 49 moves, it drives the lever plates 48 to move.

[0032] like Figure 2 As shown, the cutting table frame 1 has a reducer 6, such as Figure 1 As shown, the output end of the reducer 6 has a reducer output shaft 61, and a rocker arm 62 is fixed on the reducer output shaft 61. The lower end of the rocker arm 62 has a drive gear. One end of the moving cutter 22 has a rack portion 221. When the rocker arm 62 swings back and forth, the drive gear meshes with the rack portion 221, thereby driving the moving cutter 22 to move back and forth. That is, the reciprocating movement of the moving cutter 22 is driven by the reducer 6, the reducer output shaft 61, and the rocker arm 62.

[0033] like Figure 2 , Figure 3As shown, the drive mechanism includes a drive shaft 71, a main shaft 7, a header housing 19, a drive pulley 72, a driven pulley 74, a chain drive mechanism, and the header housing 19. The main shaft 7 is rotatably mounted on the header frame 1. The first end of the drive shaft 71 is connected to the first end of the main shaft 7 via a universal joint. The drive pulley 72 is fixed to the second end of the main shaft 7, and the driven pulley 74 is fixed to the input end of the reducer 6. A belt 73 is fitted between the drive pulley 72 and the driven pulley 74. The header housing 19 is fixed to the harvester frame 46. The header housing 19 contains a gear set. Chain drive mechanisms 75 are located between the input end of the gear set and the second end of the main shaft 7, and between the stalk feeding auger 3 and the second end of the main shaft 7. The gear set has multiple output ends, each of which is fixedly connected to a corresponding harvesting sprocket 41, a picking sprocket 44, and a harvesting roller 5. Figure 5 As shown, a drive unit 8 is installed on the main frame 10. The drive unit 8 can be a diesel engine, and its output end is fixedly connected to the second end of the drive shaft 71 via a universal joint. When the drive unit 8 is working, it drives the rotation of the main shaft 7 via the drive shaft 71, which in turn drives the rotation of the gears inside the header housing 19 via the chain drive mechanism 75, thereby driving the rotation of the stalk feeding auger 3, the harvesting sprocket 41, and the reeling sprocket 44. One of the harvesting sprockets 41 on the left side is fixed to the first output end of the gear set in the header housing 19. When the main shaft 7 rotates, the drive pulley 72 rotates synchronously, driving the rotation of the driven pulley 74 via the belt 73, which in turn drives the reducer 6 to start. When the main shaft 7 rotates, it also drives the rotation of the stalk feeding auger 3 via the chain drive mechanism 75. The outer wall of the stalk feeding auger 3 has two first spiral blades 31 arranged symmetrically on the left and right sides. When the stalk feeding auger 3 rotates, the first spiral blades 31 are used to transport the stalks. A lever 32 is located between the two first spiral blades 31 of the stalk feeding auger 3. The lever 32 is arranged radially along the stalk feeding auger 3 and is fixed to the outer wall of the stalk feeding auger 3. The lever 32 is used to move the stalk. The picking roller 5 is fixed to the second and third output ends of the gear set of the header housing 19, and one of the sprockets on the right side is fixed to the fourth output end of the gear set of the header housing 19. When the main shaft 7 drives the input end of the gear set of the header housing 19 to rotate through the chain drive mechanism 75, all four output ends of the gear set of the header housing 19 rotate simultaneously, thereby driving the rotation of the picking roller 5, the harvesting sprocket 41, and the sprocket 44.

[0034] To protect the chain drive mechanism 75, belt 73, drive pulley 72 and driven pulley 74, a transmission mechanism housing 11 is fixed on the cutting table frame 1, which surrounds the chain drive mechanism 75, belt 73, drive pulley 72 and driven pulley 74.

[0035] The working principle of this invention is described below:

[0036] (1) The drive component 8 drives the drive shaft 71 to rotate, which in turn drives the main shaft 7 to rotate. (2) When the main shaft 7 rotates, the drive pulley 72, belt 73 and driven pulley 74 drive the reducer 6 to work. The reducer output shaft 61 rotates, which drives the swing arm 62 to swing. Then the drive teeth at the bottom of the swing arm 62 mesh with the rack part 221 of the moving blade 22, which drives the moving blade 62 to move back and forth relative to the fixed blade 61, thereby cutting the straw. (3) When the main shaft 7 rotates, the chain drive mechanism 75 drives the stalk feeding auger 3 to rotate, thereby conveying the straw. (4) When the main shaft 7 rotates, the chain drive mechanism 75 drives the gear inside the header box 19 to rotate, which in turn drives the harvesting sprocket 41, the picking sprocket 44 and the ear picking roller 5 to rotate, thereby pulling out the straw and picking the ears for harvesting. (5) After adjusting the conveyor 9 horizontally, the crossbeam ear plate 17 can be removed from the crossbeam 16. The cutter frame ear plate connected to the lower end of the support 45 and the cutter frame 1 can be removed. Then, adjust the position of the harvesting component 4 horizontally until the harvesting component 4 and the conveyor 9 are aligned. Then, reassemble the crossbeam ear plate 17 and the crossbeam 16, the cutter frame ear plate and the cutter frame 1 together.

[0037] This invention uses the support member 45 to adjust the height of the harvesting component 4 relative to the cutting mechanism 2, thereby adjusting the header spacing to investigate the effect of header spacing on ear and stem harvesting. The drive mechanism allows for adjustment of the rotational speeds of the stalk feeding auger, ear-picking roller, and harvesting sprocket, further studying the impact of different rotational speeds on ear and stem harvesting. The tilt adjustment member and horizontal adjustment mechanism allow for adjustment of the cutting position, further studying the effect of different cutting positions on ear and stem harvesting. By adjusting the above-mentioned parameters, the influence on ear and stem harvesting is investigated.

Claims

1. A combined spike and stem harvesting test platform, characterized in that, Includes the cutting table, main frame, and test bench frame; The header includes a header frame, a cutting mechanism, and a harvesting assembly. The header frame is fixed to the main frame. The cutting mechanism is located at the front end of the header frame. The harvesting assembly includes a harvester frame, harvesting sprockets, a picking roller, and a support member. The rear end of the harvester frame is hinged to the header frame. The lower end of the support member is hinged to the header frame, and the upper end of the support member is hinged to the harvester frame. The length of the support member is adjustable and lockable. The harvesting sprockets are arranged in two sets, one on the left and one on the right, with several harvesting sprockets in each set connected together. The machine is equipped with a harvesting chain, on which there are equally spaced paddles; there are two picking rollers arranged on the left and right sides and rotatably connected to the harvester frame; when the length of the support is adjusted, the distance between the harvesting components and the cutting mechanism is changed, thereby realizing the adjustment of the header spacing; the rear side of the cutting mechanism has a stalk feeding auger, which is rotatably connected to the header frame; the header frame has a drive mechanism that drives the stalk feeding auger, the picking rollers and the harvesting sprocket to rotate, and the speed of the stalk feeding auger and the picking rollers is adjusted by the drive mechanism; The test bench frame is hinged to the main frame and has an angle adjustment component between them to adjust the relative angle of the test bench frame. A conveyor for conveying stalks is movably mounted on the test bench frame, and the test bench frame has a horizontal adjustment mechanism for adjusting the left and right positions of the conveyor. The angle adjustment component drives the test bench frame to swing relative to the main frame, and the horizontal adjustment mechanism adjusts the left and right positions of the conveyor to adjust the cutting position.

2. The combined spike and stem harvesting test platform according to claim 1, characterized in that, The cutting mechanism includes fixed blades and moving blades. The fixed blades are multiple blades arranged at equal intervals and fixedly connected to the cutting table frame. The moving blades penetrate all the fixed blades.

3. The combined spike and stem harvesting test platform according to claim 2, characterized in that, The support component includes a sleeve, inner rods, and nuts. There are two inner rods with external threads. The first end of the first inner rod is hinged to a harvester frame ear plate at the bottom of the harvester frame, and the second end of the first inner rod extends into the first end of the sleeve. The first end of the second inner rod is hinged to a harvester frame ear plate on the header frame, and the second end of the second inner rod extends into the second end of the sleeve. Nuts are rotatably installed at both ends of the sleeve, and the nuts are threadedly connected to the corresponding inner rods to lock the length of the support component.

4. The combined spike and stem harvesting test platform according to claim 3, characterized in that, Multiple sprockets are rotatably mounted on the harvester frame, and sprockets are connected by sprocket chains. One of the sprockets is coaxially arranged with a harvester sprocket on the right side.

5. The combined spike and stalk harvesting test platform according to claim 4, characterized in that, The cutting table frame has a reducer, the output end of the reducer has a reducer output shaft, a swing arm is fixed on the reducer output shaft, and the lower end of the swing arm has a drive gear; one end of the moving blade has a rack, and when the swing arm swings back and forth, the drive gear meshes with the rack to drive the moving blade to move back and forth.

6. The combined spike and stem harvesting test platform according to claim 5, characterized in that, The drive mechanism includes a drive shaft, a main shaft, a drive pulley, a driven pulley, a chain drive mechanism, and a header housing. The main shaft is rotatably mounted on the header frame. The first end of the drive shaft is connected to the first end of the main shaft via a universal joint. The drive pulley is fixed to the second end of the main shaft, and the driven pulley is fixed to the input end of the reducer. A belt is fitted between the drive pulley and the driven pulley. The header housing is fixed to the harvester frame. The header housing contains a gear set. Chain drive mechanisms are provided between the input end of the gear set and the second end of the main shaft, and between the stalk feeding auger and the second end of the main shaft. The gear set has multiple output ends, and each output end is fixedly connected to a corresponding harvesting sprocket, reeling sprocket, and ear-picking roller.

7. The combined spike and stem harvesting test platform according to claim 6, characterized in that, The horizontal adjustment mechanism includes a lead screw, a lead screw nut, and a horizontal adjustment motor. The lead screw is rotatably mounted on the test bench support, the lead screw nut is assembled on the lead screw, the horizontal adjustment motor is fixed on the test bench support and drives the rotation of the lead screw, and the conveyor frame of the conveyor is fixedly connected to the lead screw nut.

8. The combined spike and stem harvesting test platform according to claim 7, characterized in that, The horizontal adjustment mechanism includes a horizontal adjustment sprocket, a horizontal adjustment chain, and a horizontal adjustment motor. The horizontal adjustment sprocket is rotatably mounted on the test bench support. The horizontal adjustment chain is assembled between two horizontal adjustment sprockets. The horizontal adjustment motor is fixed on the test bench support and drives the rotation of one of the horizontal adjustment sprockets. The conveyor frame of the conveyor is fixedly connected to the horizontal adjustment chain.

9. The combined spike and stem harvesting test platform according to claim 8, characterized in that, The tilt adjustment component is a cylinder. The test bench frame is located at the front of the main frame, and the rear end of the test bench frame is hinged to the front end of the main frame. The cylinder barrel is hinged to the front end of the main frame, and the piston rod of the cylinder is hinged to the front end of the test bench frame.

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