Novel peanut harvester with rear portion having soil breaking and seedling pulling functions

Abstract

The utility model discloses a novel peanut harvester with soil breaking and seedling pulling functions at the rear part, which comprises a frame, a power transmission mechanism, a depth roller, a scraper knife assembly, a soil breaking roller, a conveying chain ladder and a seedling and fruit laying and seedling turning mechanism, and a secondary pressing and soil breaking device is arranged between the lower part of the rear end of the conveying chain ladder and the upper part of the front part of the seedling and fruit laying and seedling turning mechanism on the frame. And the secondary pressing soil crushing device is in transmission connection with the rear side part of the conveying chain ladder. According to the peanut harvester, the secondary pressing and soil crushing device is additionally arranged on the basis of a peanut harvester with the patent number of ZL202322028149.8, soil blocks on peanut seedlings are completely crushed basically to separate soil, meanwhile, the inclination angle of the conveying chain ladder is reduced, peanut seedlings are prevented from being separated from the peanut seedlings due to impact force generated by vertical falling of the peanuts, the peanut harvester can advance at a high speed during harvesting operation, and the harvesting efficiency is improved. The soil crushing effect is improved while the harvesting operation efficiency is ensured, and the subsequent manual labor intensity is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery, and in particular relates to a novel peanut harvester with the functions of breaking soil and removing seedlings at the rear. Background Art

[0002] Peanut is an important economic crop in my country, with a large planting area. In recent years, the area of ​​mechanized harvesting operations has also increased. There are various structures of peanut harvesters. Among them, Chinese patent No. ZL202322028149.8 discloses a peanut harvester. In actual operation, there are the following problems:

[0003] 1) Since peanut harvesters are usually towed by tractors, if the tractor moves at a fast speed, the time it takes for peanuts and soil to pass through the soil crushing roller when being transported from the rear end of the shovel to the conveyor chain ladder will also be very fast. The floating soil crushing roller arranged above the rear side of the shovel will have a poor effect on crushing the soil on the peanuts. If the tractor's speed is reduced, the harvesting time will be delayed. Therefore, it is urgent to further set a soil crushing mechanism on the peanut harvester.

[0004] 2) The slope of the conveyor chain ladder is large, that is, the rear end of the conveyor chain is at a higher position. There is a height difference of about 60 cm between the rear end of the conveyor chain ladder and the vine laying and turning mechanism. This structure not only requires greater power during the conveying process of the peanut vines, but also has a greater impact force when the peanut vines fall from the rear end of the conveyor chain ladder to the vine laying and turning mechanism, which separates the peanuts from the vines and causes the peanuts to fall into the soil, resulting in poor harvesting effect. Utility Model Content

[0005] In order to solve the deficiencies in the prior art, the utility model provides a novel peanut harvester with a soil crushing and seedling-pulling function at the rear part while ensuring the harvesting efficiency and improving the soil crushing effect, with small conveying power and effective protection of the peanut seedlings and fruits from separation.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: a new peanut harvester with soil crushing and seedling turning function at the rear, including a frame, a power transmission mechanism, a depth limiting roller, a shovel blade assembly, a soil crushing roller, a conveyor chain ladder and a shovel fruit laying and turning mechanism. Lifting wheel frames are arranged on the left and right sides of the lower rear side of the frame, and the lower end of the lifting wheel frame is equipped with a ground wheel. A lifting frame for assembling and connecting with the hydraulic lifting arm at the rear end of the tractor is arranged on the upper front end of the frame. The power transmission mechanism is arranged in the middle of the upper front side of the frame, and the power output shaft of the tractor is connected with the power transmission mechanism. Depth limiting frames with a front low and a rear high tilted arrangement are fixed on the left and right sides of the front end of the frame. The depth limiting roller is horizontally rotatable in the left and right directions and is installed between the lower ends of the two depth limiting frames. The shovel blade assembly is fixed on the lower front side of the frame. The conveyor chain ladder is arranged at the rear end of the middle part of the frame with a low front and a high rear, and is arranged at an angle to the rear side of the middle part of the frame and is located at the rear and lower part of the depth limiting roller. Swing arms are arranged on the left and right sides of the front lower part of the frame. The soil crushing roller is installed between the rear ends of the two swing arms and is located at the rear upper part of the blade assembly. The conveyor chain ladder is arranged at a low front and a high rear, and is arranged at an angle to the rear side of the middle part of the frame and is located at the rear side of the soil crushing roller. The front end of the conveyor chain ladder is close to the rear end of the blade assembly and is located at the rear and lower part of the soil crushing roller. The vine and fruit laying and vine turning mechanism is arranged at the rear end of the frame and is located below the rear end of the conveyor chain ladder. The power transmission mechanism is respectively connected to the soil crushing roller and the conveyor chain ladder, and the conveyor chain ladder is connected to the vine and fruit laying and vine turning mechanism. A secondary suppression and soil crushing device is arranged on the frame between below the rear end of the conveyor chain ladder and above the front of the vine and fruit laying and vine turning mechanism. The secondary suppression and soil crushing device is connected to the rear side of the conveyor chain ladder.

[0007] The secondary soil crushing device comprises a fixed roller, a floating roller and two rocker arms. The fixed roller and the floating roller are arranged in parallel. The floating roller is located above and behind the fixed roller. The left and right ends of the fixed roller are rotatably connected to the left and right sides of the frame respectively. The two rocker arms are arranged in parallel. The front ends of the two rocker arms are rotatably connected to the left and right sides of the frame respectively through a fixed shaft. The fixed shaft is located above the fixed roller. The left end of the central axis of the floating roller is rotatably connected to the rear end of the left rocker arm, and the right end of the central axis of the floating roller is rotatably connected to the rear end of the right rocker arm. The left and right sides of the frame are respectively provided with baffles arranged from front to back along the blade assembly, the soil crushing roller and the conveying chain ladder. An arc hole for passing the central axis of the floating roller is opened on the baffle, and the center of the arc hole is located on the center line of the fixed shaft. A tension spring is connected to the rear end of the rocker arm. The tension spring is tilted high at the front and low at the rear. The rear lower end of the tension spring is connected to the frame. A soil crushing gap adjustment component located below the rear side of the rocker arm is provided on the frame, and the upper end of the soil crushing gap adjustment component is crimped to the bottom of the rocker arm.

[0008] The soil crushing gap adjustment assembly includes a fixing nut, a locking nut and an adjusting screw. The fixing nut is fixedly connected to the frame, the adjusting screw is vertically arranged, the lower end of the adjusting screw is threadedly connected in the fixing nut, the locking nut is threadedly connected to the adjusting screw and is crimped with the upper end of the fixing nut, a rubber cap is installed on the outside of the rod head at the upper end of the adjusting screw, and the upper end surface of the rubber cap is crimped with the bottom of the rocker arm.

[0009] The outer circles of the left and right ends of the floating roller are both provided with spiral seedling-pulling blades.

[0010] L-shaped seedling guide plates are provided on the frame below and behind the spiral seedling moving blades. The two seedling guide plates on the left and right sides have the same structure and are symmetrically arranged. The rear side of the left seedling guide plate gradually tilts backward from left to right, and the bottom of the left seedling guide plate gradually tilts downward from left to right and extends above the seedling and fruit laying and turning mechanism.

[0011] Using the above technical solution, the working process of the utility model is as follows:

[0012] The lifting frame at the front end of the frame is assembled and connected with the hydraulic lifting arm at the rear end of the tractor, and then the power output shaft of the tractor is connected with the power input shaft of the gearbox. The distance between the ground wheel and the frame is adjusted by the lifting wheel frame, and then the height of the frame is adjusted. At the same time, the height of the depth limiting roller is adjusted by the depth limiting frame to control the depth of the shovel assembly into the ground. The first transmission shaft drives the conveying chain ladder and the left seedling separating roller to rotate respectively, and the second transmission shaft drives the soil crushing roller and the right seedling separating roller to rotate respectively. The conveying chain ladder drives the vibrating shaft, fixed roller, floating roller and the seedlings and fruit laying and turning mechanisms on both sides to work. Then, the tractor pulls the frame forward, and the shovel assembly shovels up the peanut seedlings and soil blocks in the soil. The separating roller separates the scooped peanut vines and pushes them onto the conveyor chain ladder to prevent the peanut vines from being entangled. The peanut vines, fruits and soil blocks are transported from the rear end of the shovel blade assembly to the conveyor chain ladder through the soil crushing roller. The soil crushing roller can float up and down according to the amount of peanut vines, fruits and soil blocks passing under it. The soil crushing roller crushes the soil blocks once under its own weight and rotation without damaging the peanut vines. The rotation of the soil crushing roller can also push the peanut vines and fruits backwards onto the conveyor chain ladder. The soil crushing roller is located on the rear side of its up and down floating hinge point (the front end of the swing arm). In this way, the soil crushing roller can avoid being stuck and unable to get up when moving forward. The peanut vines, fruits and soil blocks are transported from the front and bottom to the back and up through the conveyor chain ladder. A rake rod is provided on the connecting rod of the conveyor chain ladder. The rake bar can further break up the soil blocks, and the vibrating shaft drives the vibrating wheel to rotate. The vibrating wheel can drive the upper half of the chain of the conveyor chain ladder to shake up and down, thereby shaking off the broken soil blocks. When the peanut vines are about to pass through the rightmost end of the conveyor chain ladder, the roots of the peanut vines still carry a certain amount of soil blocks. The peanut vines and the soil blocks first fall to the front half of the floating roller, and then slide forward to the gap between the floating roller and the fixed roller. The upper part of the fixed roller rotates backward, and the upper part of the floating roller rotates forward, driving the peanut vines to move downward through the gap. When the size of the soil blocks on the peanut vines is larger than the gap width, the floating roller overcomes the pulling force of the tension spring, and rotates and floats upward with the hinge point of the front end of the rocker arm and the frame as the center, thus shaking off the soil blocks. The blocks are crushed for the second time and the crushed soil falls to the ground. When the peanut vines pass through the gap, under the action of the tension spring, the floating roller rotates downward with the hinge point between the front end of the rocker arm and the frame as the center. During the working process of the secondary suppression and soil crushing device, the floating roller floats up and down continuously to perform secondary soil crushing operations. After the secondary soil crushing, the peanut vines and fruits basically carry no soil blocks and slide to the front side of the vine and fruit laying and turning mechanism. The star disk of the vine and fruit laying and turning mechanism turns the peanut vines and fruits to a state where the fruit faces up and the vines face down. The laying strips are laying grates, which guide the turned peanut vines and fruits and cooperate with the star disk to lay the vines and fruits on the ground in the middle of the rear side of the frame. As the entire peanut harvester continues to move forward, the peanut harvesting operation is completed.

[0013] The utility model reduces the height of the rear end of the conveyor chain ladder, and at the same time, a secondary suppression and soil crushing device is arranged between the lower part of the rear end of the conveyor chain ladder and the upper part of the front of the seedling laying and turning mechanism, so as to prevent the peanut seedlings and fruits falling from the rear end of the conveyor chain ladder from generating a large impact force and causing the peanut fruits to fall off the seedlings. At the same time, the soil is crushed by the primary suppression and soil crushing roller, the soil is crushed by the rake rod arranged on the connecting rod of the conveyor chain ladder through vibration, and the soil is crushed by the secondary suppression and soil crushing of the floating roller, so that the soil blocks on the peanut seedlings are basically cleaned, and the subsequent manual labor is fully reduced.

[0014] The spiral seedling-pulling blades arranged on the outer circles of the left and right ends of the floating roller rotate with the floating roller, and transport the peanut seedlings and fruits falling from the left and right ends of the conveyor chain ladder to the middle, avoiding secondary crushing through the gap between the floating roller and the fixed roller and then falling vertically to the space between the left and right sides of the front part of the seedling-turning mechanism for laying and turning the seedlings and fruits and the frame.

[0015] The rear side of the guide plate can prevent the peanuts falling from the left and right ends of the conveyor chain ladder from sliding back to the ground without secondary soil crushing. When the spiral blades move the peanuts to the middle during rotation, when they move to the bottom of the guide plate, the bottom of the guide plate guides the peanuts to the middle, preventing them from falling directly to the ground.

[0016] The soil crushing gap adjustment assembly is to loosen the locking nut first, then turn the adjusting screw to adjust the height of the upper end of the adjusting screw, adjust the height position of the rear end of the rocker arm, and adjust the minimum gap between the soil crushing roller and the fixed roller accordingly. After the adjustment is completed, tighten the locking nut to fix the adjusting screw. The rubber cap at the upper end of the adjusting screw reduces the impact force between the rocker arm and the adjusting screw when the floating roller floats up and down, and plays a role in shock absorption and noise reduction.

[0017] In summary, the utility model adds a secondary suppression and soil crushing device on the basis of the peanut harvester with patent number ZL202322028149.8, which basically completely crushes the soil blocks on the peanut vines and separates the soil from the fruits, while reducing the inclination angle of the conveyor chain ladder to prevent the impact force of the vertical fall of the peanuts from causing the peanuts to fall off the vines. During the harvesting operation, the machine can move at a high speed, ensuring the efficiency of the harvesting operation while improving the soil crushing effect and reducing the subsequent manual labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the left side orthographic projection structure of the utility model;

[0019] Figure 2 It is a top view of the utility model;

[0020] Figure 3 for Figure 1 Enlarged view of part A in the middle;

[0021] Figure 4 for Figure 2 Enlarged view of part B in the middle. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] like Figure 1-Figure 4 As shown, a new type of peanut harvester with soil crushing and seedling turning function at the rear part comprises a frame 1, a power transmission mechanism, a depth limiting roller 2, a blade assembly 3, a soil crushing roller 4, a conveying chain ladder 5 and a seedling and fruit laying and seedling turning mechanism 6. Lifting wheel frames 7 are arranged on the left and right sides of the lower rear side of the frame 1, and a ground wheel 8 is installed at the lower end of the lifting wheel frame 7. A lifting frame 9 for assembling and connecting with the hydraulic lifting arm at the rear end of the tractor is arranged on the upper front part of the frame 1. The power transmission mechanism is arranged in the middle of the upper front side of the frame 1, and the power output shaft of the tractor is connected with the power transmission mechanism. Depth limiting frames 10 with a front low and a rear high tilted arrangement are fixed on the left and right sides of the front end of the frame 1. The depth limiting roller 2 is installed between the lower ends of the two depth limiting frames 10 for horizontal rotation along the left and right directions. The blade assembly 3 is fixed on the lower front side of the frame 1 and is located at the rear and lower part of the depth limiting roller 2. 1 is provided with swing arms 11 on the left and right sides of the lower front side, the soil crushing roller 4 is horizontally rotated in the left and right directions and is installed between the rear ends of the two swing arms 11 and is located at the rear upper part of the blade assembly 3, the conveying chain ladder 5 is tilted and arranged at the rear side of the middle part of the frame 1 with a lower front and a higher rear, and is located at the rear side of the soil crushing roller 4, the front end of the conveying chain ladder 5 is close to the rear end of the blade assembly 3 and is located at the rear and lower part of the soil crushing roller 4, the vine fruit laying and vine turning mechanism 6 is arranged at the rear end of the frame 1 and is located below the rear end of the conveying chain ladder 5, the power transmission mechanism is respectively connected to the soil crushing roller 4 and the conveying chain ladder 5, the conveying chain ladder 5 is connected to the vine fruit laying and vine turning mechanism 6, a secondary suppression and soil crushing device 12 is provided on the frame 1 between below the rear end of the conveying chain ladder 5 and above the front of the vine fruit laying and vine turning mechanism 6, and the secondary suppression and soil crushing device 12 is connected to the rear side of the conveying chain ladder 5.

[0024] The secondary soil crushing device 12 includes a fixed roller 13, a floating roller 14 and two rocker arms 15. The fixed roller 13 and the floating roller 14 are arranged in parallel. The floating roller 14 is located above and behind the fixed roller 13. The left and right ends of the fixed roller 13 are respectively rotatably connected to the left and right sides of the frame 1. The two rocker arms 15 are arranged in parallel. The front ends of the two rocker arms 15 are respectively rotatably connected to the left and right sides of the frame 1 through a fixed shaft. The fixed shaft is located above the fixed roller. The left end of the central axis of the floating roller 14 is rotatably connected to the rear end of the left rocker arm 15, and the right end of the central axis of the floating roller 14 is rotatably connected to the right rocker arm 15. At the rear end of the arm 15, baffles 16 are respectively provided on the left and right sides of the frame 1, which are arranged from front to rear along the blade assembly 3, the soil crushing roller 4, and the conveyor chain ladder 5. An arc hole 17 for passing the central axis of the floating roller 14 is opened on the baffle 16. The center of the arc hole 17 is located on the center line of the fixed axis. A tension spring 18 is connected to the rear end of the rocker arm 15. The tension spring 18 is tilted with the front higher and the rear lower. The rear lower end of the tension spring 18 is connected to the frame 1. A soil crushing gap adjustment component 19 is provided on the frame 1 and is located at the lower rear side of the rocker arm 15. The upper end of the soil crushing gap adjustment component 19 is crimped to the bottom of the rocker arm 15.

[0025] The soil crushing gap adjustment assembly 19 includes a fixing nut 20, a locking nut 21 and an adjusting screw 22. The fixing nut 20 is fixedly connected to the frame 1, and the adjusting screw 22 is vertically arranged. The lower end of the adjusting screw 22 is threadedly connected in the fixing nut 20, and the locking nut 21 is threadedly connected to the adjusting screw 22 and crimped with the upper end of the fixing nut 20. A rubber cap 23 is installed on the outside of the rod head at the upper end of the adjusting screw 22, and the upper end surface of the rubber cap 23 is crimped with the bottom of the rocker arm 15.

[0026] The outer circles of the left and right ends of the floating roller 14 are both provided with spiral seedling-moving blades 24 .

[0027] An L-shaped seedling guide plate 25 is provided on the frame 1 below and behind the spiral seedling-pulling blade 24. The two seedling guide plates 25 on the left and right sides have the same structure and are symmetrically arranged. The rear side of the left seedling guide plate 25 gradually tilts backward from left to right, and the bottom of the left seedling guide plate 25 gradually tilts downward from left to right and extends above the seedling and fruit laying and turning mechanism 6.

[0028] The working process of the utility model is as follows: the lifting frame 9 at the front end of the frame 1 is assembled and connected with the hydraulic lifting arm at the rear end of the tractor, and then the power output shaft of the tractor is connected with the power input shaft of the gearbox, and the distance between the ground wheel 8 and the frame 1 is adjusted by the lifting wheel frame 7, and then the height of the frame 1 is adjusted. At the same time, the height of the depth limiting roller 2 is adjusted by the depth limiting frame 10, so that the depth of the shovel assembly 3 entering the ground can be controlled, the first transmission shaft 26 drives the conveying chain ladder 5 and the left seedling separation roller 27 to rotate respectively, the second transmission shaft 28 drives the soil crushing roller 4 and the right seedling separation roller 27 to rotate respectively, the conveying chain ladder 5 drives the vibration shaft 29, the fixed roller 13, the floating roller 14 and the seedling and fruit laying and turning mechanism 6 on both sides to work, and then the tractor pulls the frame 1 forward, and the shovel assembly 3 enters the ground. The knife assembly 3 scoops up the peanut vines and soil blocks in the soil, and the seedling separation rollers 27 on both sides separate the scooped peanut vines and push them onto the conveying chain ladder 5 to prevent the peanut vines from being entangled. The peanut vines and soil blocks pass through the soil crushing roller 4 when being conveyed from the rear end of the shovel blade assembly 3 to the conveying chain ladder 5. The soil crushing roller 4 can float up and down according to the amount of peanut vines and soil blocks passing below it. The soil crushing roller 4 crushes the soil blocks once under its own weight and rotation without damaging the peanut vines. The rotation of the soil crushing roller 4 can also push the peanut vines and soil blocks backward onto the conveying chain ladder 5. The soil crushing roller 4 is located at the rear side of the hinge point (the front end of the swing arm 11) where it floats up and down. In this way, the soil crushing roller 4 can be prevented from getting stuck and unable to get up when moving forward. The peanut vines and soil blocks are conveyed from the front to the back through the conveying chain ladder 5. A rake bar is provided on the connecting rod of the chain ladder 5, which can further break up the soil blocks. Moreover, the vibrating shaft 29 drives the vibrating wheel to rotate, and the vibrating wheel can drive the upper half of the chain of the conveying chain ladder 5 to shake up and down, thereby shaking off the broken soil blocks. When the peanut vines are about to pass through the rightmost end of the conveying chain ladder 5, the roots of the peanut vines still carry a certain amount of soil blocks. The peanut vines and the soil blocks first fall to the front half of the floating roller 14, and then slide forward to the gap between the floating roller 14 and the fixed roller 13. The upper part of the fixed roller 13 rotates backward, and the upper part of the floating roller 14 rotates forward, driving the peanut vines to move downward through the gap. When the size of the soil blocks on the peanut vines is larger than the gap width, the floating roller 14 overcomes the pulling force of the tension spring 18 and moves upward with the hinge point between the front end of the rocker arm 15 and the frame 1 as the center. Rotate and float, so that the soil blocks are crushed for the second time, and the crushed soil falls to the ground. When the peanut vines pass through the gap, under the action of the tension spring 18, the floating roller 14 rotates downward with the hinge point between the front end of the rocker arm 15 and the frame 1 as the center. During the working process of the secondary suppression and crushing device 12, the floating roller 14 floats up and down continuously to perform secondary soil crushing operations. After the secondary soil crushing, the peanut vines and fruits basically do not carry soil blocks, and slide to the front side of the vine and fruit laying and turning mechanism 6. The star disk of the vine and fruit laying and turning mechanism 6 turns the peanut vines and fruits into a state where the fruits are facing up and the vines are facing down. The laying strips are laying grates, which guide the turned peanut vines and fruits, and cooperate with the star disk to lay the vines and fruits on the ground in the middle of the rear side of the frame 1. As the entire peanut harvester continues to move forward, the peanut harvesting operation is completed.

[0029] The utility model reduces the height of the rear end of the conveyor chain ladder, and at the same time, a secondary suppression and soil crushing device 12 is arranged between the lower part of the rear end of the conveyor chain ladder 5 and the upper part of the front part of the seedling laying and turning mechanism 6, so as to prevent the peanut seedlings and fruits falling from the rear end of the conveyor chain ladder 5 from generating a large impact force and causing the peanut fruit to fall off the seedlings. At the same time, the primary suppression and soil crushing of the soil crushing roller 4, the vibration and soil crushing of the rake rod arranged on the connecting rod of the conveyor chain ladder 5, and the secondary suppression and soil crushing of the floating roller 14 can basically clean up the soil blocks on the peanut seedlings, and fully reduce the subsequent manual labor.

[0030] The spiral seedling-pulling blades 24 arranged on the outer circles of the left and right ends of the floating roller 14 rotate with the floating roller 14, and transport the peanut seedlings and fruits falling from the left and right ends of the conveyor chain ladder 5 to the middle, avoiding secondary crushing through the gap between the floating roller 14 and the fixed roller 13 and then falling vertically downward to the space between the left and right sides of the front part of the seedling-turning mechanism 6 for laying and turning the seedlings and fruits and the frame 1.

[0031] The rear side of the guide plate 25 can prevent the peanuts falling from the left and right ends of the conveyor chain ladder 5 from sliding backwards to the ground without secondary soil crushing. When the spiral seedling-pulling blades 24 pull the peanuts toward the middle during rotation, when they move to the bottom of the guide plate 25, the bottom of the guide plate 25 guides the peanuts toward the middle, preventing the peanuts from falling directly to the ground.

[0032] The soil crushing gap adjustment assembly 19 first loosens the locking nut 21, then turns the adjusting screw 22 to adjust the height of the upper end of the adjusting screw 22, and adjusts the height position of the rear end of the rocker arm 15, and the minimum gap between the soil crushing roller 4 and the fixed roller 13 is also adjusted accordingly. After the adjustment is completed, tighten the locking nut 21 to fix the adjusting screw 22. The rubber cap 23 at the upper end of the adjusting screw 22 reduces the impact force between the rocker arm 15 and the adjusting screw 22 when the floating roller 14 floats up and down, and plays a role in shock absorption and noise reduction.

[0033] The chain transmission mechanism is used to connect the conveyor chain ladder 5 with the floating roller 14 and the fixed roller 13 in the utility model. This is a conventional technology, and the specific structure is not repeated. The specific structure of the power transmission mechanism blade assembly 3, the soil crushing roller 4, the conveyor chain ladder 5 and the seedling and fruit laying and turning mechanism 6 is the same as that of the peanut harvester with patent number ZL202322028149.8, so the specific structure of these parts is not repeated.

[0034] The above two embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model belong to the protection scope of the technical solution of the utility model.

Claims

1. A new type of peanut harvester with a soil crushing and seedling-pulling function at the rear, comprising a frame, a power transmission mechanism, a depth-limiting roller, a blade assembly, a soil crushing roller, a conveying chain ladder and a seedling-fruit laying and seedling-turning mechanism. Lifting wheel frames are arranged on the left and right sides of the lower rear side of the frame, and a ground wheel is installed at the lower end of the lifting wheel frame. A lifting frame for assembling and connecting with a hydraulic lifting arm at the rear end of a tractor is arranged on the upper front part of the frame. The power transmission mechanism is arranged at the middle of the upper front side of the frame, and the power output shaft of the tractor is connected to the power transmission mechanism. Depth-limiting frames with a front low and a rear high tilted arrangement are fixed on the left and right sides of the front end of the frame, and the depth-limiting roller is installed between the lower ends of the two depth-limiting frames for horizontal rotation in the left and right directions. The shovel blade assembly is fixed to the lower front part of the frame and is located at the rear and lower part of the depth limiting roller. Swing arms are arranged on the left and right sides of the lower front part of the frame. The soil crushing roller is horizontally mounted between the rear ends of the two swing arms and is located at the upper rear part of the shovel blade assembly. The conveying chain ladder is arranged at the rear side of the middle part of the frame with a low front and a high rear, and is arranged at the rear side of the soil crushing roller. The front end of the conveying chain ladder is close to the rear end of the shovel blade assembly and is located at the rear and lower part of the soil crushing roller. The vine fruit laying and vine turning mechanism is arranged at the rear end of the frame and is located at the rear end of the conveying chain ladder. The power transmission mechanism is respectively connected to the soil crushing roller and the conveying chain ladder, and the conveying chain ladder is connected to the vine fruit laying and vine turning mechanism. It is characterized in that: A secondary soil crushing device is arranged on the frame between the lower part of the rear end of the conveying chain ladder and the upper part of the front part of the vine fruit laying and vine turning mechanism, and the secondary soil crushing device is transmission connected with the rear side of the conveying chain ladder.

2. The new peanut harvester with soil breaking and seedling removing function at the rear part according to claim 1 is characterized in that: The secondary soil crushing device comprises a fixed roller, a floating roller and two rocker arms. The fixed roller and the floating roller are arranged in parallel. The floating roller is located above and behind the fixed roller. The left and right ends of the fixed roller are rotatably connected to the left and right sides of the frame respectively. The two rocker arms are arranged in parallel. The front ends of the two rocker arms are rotatably connected to the left and right sides of the frame respectively through a fixed shaft. The fixed shaft is located above the fixed roller. The left end of the central axis of the floating roller is rotatably connected to the rear end of the left rocker arm, and the right end of the central axis of the floating roller is rotatably connected to the rear end of the right rocker arm. The left and right sides of the frame are respectively provided with baffles arranged from front to back along the blade assembly, the soil crushing roller and the conveying chain ladder. An arc hole for passing the central axis of the floating roller is opened on the baffle, and the center of the arc hole is located on the center line of the fixed shaft. A tension spring is connected to the rear end of the rocker arm. The tension spring is tilted high at the front and low at the rear. The rear lower end of the tension spring is connected to the frame. A soil crushing gap adjustment component located below the rear side of the rocker arm is provided on the frame, and the upper end of the soil crushing gap adjustment component is crimped to the bottom of the rocker arm.

3. The new peanut harvester with soil breaking and seedling removing function at the rear part according to claim 2 is characterized in that: The soil crushing gap adjustment assembly includes a fixing nut, a locking nut and an adjusting screw. The fixing nut is fixedly connected to the frame, the adjusting screw is vertically arranged, the lower end of the adjusting screw is threadedly connected in the fixing nut, the locking nut is threadedly connected to the adjusting screw and is crimped with the upper end of the fixing nut, a rubber cap is installed on the outside of the rod head at the upper end of the adjusting screw, and the upper end surface of the rubber cap is crimped with the bottom of the rocker arm.

4. The new peanut harvester with soil breaking and seedling removing function at the rear part according to claim 2 or 3, characterized in that: The outer circles of the left and right ends of the floating roller are both provided with spiral seedling-pulling blades.

5. The new peanut harvester with soil breaking and seedling removing function at the rear part according to claim 4 is characterized in that: L-shaped seedling guide plates are provided on the frame below and behind the spiral seedling moving blades. The two seedling guide plates on the left and right sides have the same structure and are symmetrically arranged. The rear side of the left seedling guide plate gradually tilts backward from left to right, and the bottom of the left seedling guide plate gradually tilts downward from left to right and extends above the seedling and fruit laying and turning mechanism.

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