A compound soil-breaking type crop harvester and harvesting method

Abstract

The application provides a composite soil crushing type crop harvester and harvesting method, and relates to the field of crop harvesting. The composite soil crushing type crop harvester comprises a frame and a traction assembly, the traction assembly is installed on one end of the frame, further comprises two groups of crop harvesting assemblies and a soil screening assembly which are installed along the frame, each of the two groups of crop harvesting assemblies comprises a plurality of vibration type digging assemblies connected with each other, an angle adjusting mechanism A and a vibration machine, the vibration machine and the angle adjusting mechanism A are respectively fixed on the two sides of the frame to drive the crop harvesting assemblies. The composite soil crushing type crop harvester and harvesting method can realize the effects of twice digging crops and twice vibrating treatment of crop soil and roots through the setting of the crop harvesting assemblies, and the treatment effect is good, the damage rate and the breakage rate are low; through the setting of the soil screening assembly, the effect of composite soil crushing can be realized while the crops are dug.

Description

Technical Field

[0001] This invention relates to the field of harvesting root and tuber crops, specifically to a composite soil-crushing crop harvester and harvesting method. Background Technology

[0002] Currently, harvesting machinery for root and tuber crops mainly includes potato harvesters mounted on hand-held tractors and root and tuber harvesters mounted on large and medium-sized tractors. Hand-held tractor-mounted potato harvesters have a shallow harvesting depth, and potatoes and sweet potatoes that grow deeper cannot be dug out intact. They often result in potatoes and sweet potatoes being cut in the middle, with half dug out and half left in the ground, leading to a high damage rate. The harvesting width is also narrow, resulting in low harvesting efficiency and high labor intensity. Large and medium-sized tractor-mounted root and tuber harvesters mainly include vibrating screen type, conveyor chain type, and half-screen, half-conveyor chain type models. Vibrating screen type root and tuber harvesters rely on reciprocating vibration to discharge the crops outside the screen. Potatoes and sweet potatoes repeatedly rub against each other within the vibrating screen. In cases where the soil clods are hard and numerous, the potatoes and sweet potatoes also rub against the soil repeatedly. In severe cases, the skin of the potatoes and sweet potatoes is completely peeled off, causing significant difficulties for storage, and even making storage impossible. For brittle medicinal herbs, breakage is particularly severe. Some brittle herbs are broken into fragments that leak with the soil under the vibrating screen, making them difficult to collect. While a semi-screen, semi-conveyor chain harvester for root and tuber crops reduces friction during discharge to some extent compared to a vibrating screen harvester, it does not fundamentally address the problem of friction damage to the crops. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a composite soil-crushing crop harvester and harvesting method, solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a composite soil-crushing crop harvester, comprising a frame and a traction assembly, the traction assembly being installed on one end of the frame, and further comprising two sets of crop harvesting assemblies and a soil screening assembly distributed along the frame;

[0005] Both sets of crop harvesting components include multiple interconnected vibratory digging components, angle adjustment mechanism A, and vibrator. The vibrator and angle adjustment mechanism A are fixed on both sides of the frame to drive the crop harvesting components.

[0006] The vibratory digging components in the two sets of crop harvesting units are spaced at different distances between any two. The distance between any two vibratory digging components in the crop harvesting unit closer to the forward direction of the frame is greater than the distance between any two vibratory digging components in the other set of crop harvesting units.

[0007] The vibratory excavation assembly includes a main shaft, a bidirectional cutter, and a vibration shaft. The main shaft is fixedly inserted through the center of the bidirectional cutter. The vibration shaft has two parts that are fixedly inserted through the bidirectional cutter. The vibration shafts of two adjacent vibratory excavation assemblies are fixed to each other. The vibration output end of the vibrator is fixed to the outermost vibration shaft.

[0008] Preferably, the vibratory excavation assembly further includes two bushings, which are located on both sides of the bidirectional cutter and are respectively sleeved on the outside of the main shaft located at both ends of the bidirectional cutter. Helical springs are fixedly sleeved on the outside of both ends of the main shaft, and the outer ends of the helical springs are fixed to the inner walls of the bushings. Each bushing is provided with two through holes communicating with its interior. A connecting shaft is fixedly installed on each vibratory shaft, and the other end of the connecting shaft passes through the through hole and is fixedly connected to the main shaft.

[0009] The two adjacent vibratory excavator components contain bushings whose ends away from the bidirectional cutter are fixed to each other. The two outermost bushings pass through the two side walls of the frame and are rotatably connected to the frame. The output shaft of the angle adjustment mechanism A is fixed to one of the bushings.

[0010] Preferably, the bidirectional blade has an S-shaped structure, with one end at the lower part of the frame extending upward in a curved shape, and the other end at the upper part of the frame extending downward in a curved shape, with an arc-shaped transition in the middle.

[0011] Preferably, a guide plate is provided inside the frame between the two crop harvesting components. The two ends of the guide plate are rotatably connected to the side wall of the frame. An angle adjustment mechanism B is fixedly installed on one side of the frame. The angle adjustment mechanism B is used to change the angle of the guide plate. The guide plate is inclined, with its inclined upward end close to the direction of the frame's forward movement and below the upper end of the bidirectional blade.

[0012] Preferably, the soil screening assembly includes a soil screening plate, a flywheel, a drive component, and a guide rod. There are two flywheels, which are rotatably connected to the inner wall of the frame. The soil screening plate is located between the two flywheels, and one end of the soil screening plate is rotatably connected to the eccentric part of the flywheel. The guide rod is fixed in the frame and has a rotatable roller sleeve installed on its outside. The end of the soil screening plate away from the flywheel is inclined downward and is located on the guide rod, with its bottom surface in contact with the roller sleeve. The drive component is installed on the frame and is used to drive the flywheel to rotate.

[0013] The soil screening plate is provided with a matrix of screening holes, which are through-holes. The end of the soil screening plate away from the frame has multiple pointed protrusions, and the bottom of the end of the soil screening plate away from the flywheel has multiple soil crushing plates fixed thereon.

[0014] Preferably, the traction assembly includes a towing rod, a towing device, a lifting rod, and a lifting device. The towing device is located at the middle position on one side of the frame in the forward direction. There are two towing rods, one end of which is hinged to the bottom side wall of the frame, and the other end is hinged to the towing device. The lifting device is located at the middle position on one side of the frame in the forward direction and is above the towing device. There are four lifting rods, one end of which is fixed to the side of the frame, and the other end of each rod is fixed to the lifting device.

[0015] Preferably, multiple wheels are installed at the bottom of both sides of the frame, and the wheels are rotatably connected to the frame.

[0016] Preferably, both angle adjustment mechanism A and angle adjustment mechanism B are combinations of a motor and a reducer, with the motor's rotating shaft connected to the reducer's input shaft and the reducer's output shaft connected to the main shaft.

[0017] Preferably, the frame is provided with a long groove corresponding to the outermost vibration shaft position, and the vibration shafts all pass through the long groove and are movably connected to it.

[0018] A harvesting method for a composite soil-crushing crop harvester includes the following steps:

[0019] Step 1: The equipment is installed on a tractor or towing equipment, with the tow unit bearing the towing force and the crane used to lift the weight of the entire equipment.

[0020] Step 2: Before the equipment moves forward in the ground, first control the angle adjustment mechanism A to tilt the tip of the bidirectional blade toward the ground;

[0021] Step 3: When the equipment is pulled forward, the bidirectional blade is inserted into the soil under force. The vibrator is controlled to generate frequency vibration. The frequency vibration of the vibrator acts on the bidirectional blade, making it easier for the bidirectional blade to insert into the soil. When the equipment moves forward, the bidirectional blade inserted into the soil can pull out the crops in the soil.

[0022] Step 4: After the crops are pulled out, they can be passed backward along the double-sided blade. Since the double-sided blade is in a vibrating state, the soil on the crops will also be shaken off and fall off when they are passed backward. Crops that are not pulled out can be brought out by the second crop harvesting component. The second crop harvesting component can clean up the crops passed from the first crop harvesting component.

[0023] Step 5: The crops continue to be passed to the soil sieving plate. The back-and-forth movement of the soil sieving plate can further remove the soil from the crops. The end of the soil sieving plate is in contact with the ground. When it moves back and forth, it can break up the soil after it has been dug by the bidirectional blade. The soil breaking plate can longitudinally cut the protrusions and sharp points.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. This composite soil-crushing crop harvester and harvesting method, by setting up crop harvesting components, consists of two sets of crop harvesting components composed of vibrating digging components with different densities. When the equipment moves forward to dig crops, the thin-bladed bidirectional blades can bring the crops out of the soil. Since the bidirectional blades are vibrating, the resistance to insertion into the soil is small, and they can easily insert into sticky soil. Because the bidirectional blades vibrate and insert without rotation, the crop loss rate is low when digging crops. Moreover, the crop harvesting components with different densities can not only remove the soil from the crops, but also achieve the effect of digging crops twice and vibrating crops twice to treat the soil and roots. The treatment effect is good, and the loss rate and breakage rate are low.

[0026] 2. This composite soil-crushing crop harvester and harvesting method, by setting up a soil screening component, allows the excavated crops to fall onto the soil screening plate as the equipment moves forward. As the soil screening plate reciprocates, the soil on the crops is further shaken off. Moreover, the soil screening plate adheres to the soil surface during operation. The soil crushing plate can break up the soil after it has been excavated by the bidirectional blades, and the pointed protrusions can further process the soil. In combination with excavating crops, it can also achieve the effect of composite soil crushing.

[0027] 3. The composite soil-crushing crop harvester and harvesting method, by setting a guide plate, allows the crops dug by the first crop harvesting component to fall onto the guide plate, and then onto the second crop harvesting component, which facilitates secondary soil processing. Because an angle adjustment mechanism B is set, the angle of the guide plate is adjustable and can be adjusted according to the angle of the bidirectional blade.

[0028] 4. This composite soil-crushing crop harvester and harvesting method, by setting up a two-way blade and an angle adjustment mechanism A, can change the angle of the two-way blade, and thus change the angle of its forward movement into the soil. It can change the digging direction according to the planting depth of the crops. Moreover, when the blade at one end of the machine becomes clogged with soil, the blade at the other end can be replaced. After vibration, the clogged soil can be removed. Therefore, the digging efficiency is high and the processing of crops is more efficient.

[0029] 5. This composite soil-crushing crop harvester and harvesting method, by setting up a traction component, can be used with existing tractors or traction equipment. It can be equipped with a towing bar and towing device for forward movement, and can also use a lifting device and lifting bar to lift the frame during transfer or reversal. It can be adapted to most existing agricultural machinery. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a front view of the structure of the present invention;

[0032] Figure 3 This is a top view of the structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the internal structure of the frame of the present invention;

[0034] Figure 5 This is a structural diagram of the two sets of crop harvesting components of the present invention;

[0035] Figure 6 This is a partial structural diagram of the vibratory excavation component of the present invention;

[0036] Figure 7 This is a cross-sectional view of the structure of the vibratory excavation assembly of the present invention;

[0037] Figure 8 This is a structural diagram of the traction assembly and frame of the present invention;

[0038] Figure 9 For the present invention Figure 8 Enlarged view of the structure at point A in the middle;

[0039] Figure 10 This is a schematic diagram of the blueprinting component of the present invention.

[0040] In the diagram: 1. Frame; 2. Traction assembly;

[0041] 201. Towing bar; 202. Towing device; 203. Lifting boom; 204. Lifting device;

[0042] 3. Crop harvesting components;

[0043] 301. Vibratory excavator assembly;

[0044] 3011, Spindle; 3012, Bidirectional cutter; 3013, Vibration shaft; 3014, Bushing; 3015, Helical spring; 3016, Through hole; 3017, Connecting shaft;

[0045] 302. Angle adjustment mechanism A; 303. Vibration machine;

[0046] 4. Soil screening components;

[0047] 401. Soil screening plate; 402. Flywheel; 403. Drive component; 404. Guide rod; 405. Roller sleeve; 406. Soil screening hole; 407. Tip protrusion; 408. Soil crushing plate;

[0048] 5. Guide plate; 6. Angle adjustment mechanism B; 7. Traveling wheels. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0050] like Figure 1-10 As shown, a composite soil-crushing crop harvester includes a frame 1 and a traction component 2, the traction component 2 being installed on one end of the frame 1, and also includes two sets of crop harvesting components 3 and a soil screening component 4 distributed along the frame 1.

[0051] Both sets of crop harvesting components 3 include multiple interconnected vibratory digging components 301, angle adjustment mechanism A302, and vibrator 303. The vibrator 303 and angle adjustment mechanism A302 are respectively fixed on both sides of the frame 1 to drive the crop harvesting components 3.

[0052] The distance between any two vibratory digging components 301 included in the two sets of crop harvesting components 3 is different. The distance between any two vibratory digging components 301 included in the crop harvesting component 3 closer to the forward direction of the frame 1 is greater than the distance between any two vibratory digging components 301 included in the other set of crop harvesting components 3.

[0053] The vibratory excavation assembly 301 includes a main shaft 3011, a bidirectional cutter 3012, and a vibration shaft 3013. The main shaft 3011 is fixedly inserted through the center of the bidirectional cutter 3012. The vibration shaft 3013 has two parts that are fixedly inserted through the bidirectional cutter 3012. The vibration shafts 3013 of two adjacent vibratory excavation assemblies 301 are fixed to each other. The vibration output end of the vibrator 303 is fixed to the outermost vibration shaft 3013.

[0054] The frame 1 measures 2580*2000*400mm and has an operating depth of 50mm-400mm, which can accommodate the planting depth of most crops on the market. If deeper operation is required, the specifications of some accessories need to be changed, but the shape, structure and installation method remain unchanged.

[0055] One set of crop harvesting components 3, which is close to the direction of advance during harvesting, includes two adjacent vibratory digging components 301 with a distance of 40 mm between each other, while the other set of crop harvesting components 3 has two adjacent vibratory digging components 301 with a distance of 80 mm between each other.

[0056] Both ends of the spindle 3011 are threaded, and both sides of the spindle that are in contact with the bidirectional cutter 3012 are screwed with nuts. Two nuts are screwed on each end, and anti-drop pads need to be installed. Since the bidirectional cutter 3012 is in a vibrating environment, it needs to be installed with good anti-vibration. The installation method of the vibration shaft 3013 is the same as that of the spindle 3011, and the anti-vibration effect can meet the usage requirements of one maintenance cycle.

[0057] The vibratory machine 303 uses an isolated linear vibratory motor. Its base is bolted to the frame 1, and its output end can output linear frequency vibration. When connected to the vibratory shaft 3013, the linear frequency vibration can be applied to the vibratory shaft 3013.

[0058] The vibratory excavator assembly 301 also includes two bushings 3014, which are located on both sides of the bidirectional cutter 3012 and are respectively sleeved on the outside of the main shaft 3011 located at both ends of the bidirectional cutter 3012. Helical springs 3015 are fixedly sleeved on the outside of both ends of the main shaft 3011. The outer ends of the helical springs 3015 are fixed to the inner walls of the bushings 3014. Each bushing 3014 is provided with two through holes 3016 communicating with its interior. A connecting shaft 3017 is fixedly installed on each vibratory shaft 3013. The other end of the connecting shaft 3017 passes through the through holes 3016 and is fixedly connected to the main shaft 3011.

[0059] The two adjacent vibratory excavating assemblies 301 include bushings 3014, the ends of which are away from the bidirectional cutter 3012 are fixed to each other. The two outermost bushings 3014 pass through the two side walls of the frame 1 respectively and are rotatably connected to the frame 1. The output shaft of the angle adjustment mechanism A302 is fixed to one of the bushings 3014.

[0060] The bushing 3014 is used for two-way connection, and the connection is fixed by double bolts and single nut. The opening of the bushing 3014 does not contact the bidirectional blade 3012. The spiral spring 3015 is a copper-nickel alloy spiral plate, which can still return to a concentric state after high-frequency vibration.

[0061] The bidirectional cutter 3012 has an S-shaped structure. One end of it, located at the lower part of the frame 1, curves upward and extends downward, while the other end, located at the upper part of the frame 1, curves downward, with an arc-shaped transition in the middle.

[0062] The 3012 double-ended blade is made of a thinner material, resulting in less resistance when inserted into the soil. However, its curved section does not have a cutting edge, and the front and back sides of the curved section are smoothly transitioned, so it will not cut the crops due to the resistance of the crops in the soil.

[0063] Inside the frame 1, between the two crop harvesting components 3, there is a guide plate 5. The two ends of the guide plate 5 are rotatably connected to the side wall of the frame 1. An angle adjustment mechanism B6 is fixedly installed on one side of the frame 1. The angle adjustment mechanism B6 is used to change the angle of the guide plate 5. The guide plate 5 is inclined, with its inclined upward end close to the forward direction of the frame 1 and below the upper end of the bidirectional blade 3012.

[0064] The guide plate 5 is used to transfer the excavated crops so that the crops with soil not being cleaned can be put back into the second crop harvesting assembly 3 for further soil processing. The guide plate 5 is also used to connect the two crop harvesting assemblies.

[0065] The soil screening assembly 4 includes a soil screening plate 401, a flywheel 402, a drive component 403, and a guide rod 404. There are two flywheels 402, which are rotatably connected to the inner wall of the frame 1 respectively. The soil screening plate 401 is located between the two flywheels 402. One end of the soil screening plate 401 is rotatably connected to the eccentric part of the flywheel 402. The guide rod 404 is fixed in the frame 1, and a rotatable roller sleeve 405 is installed on its outside. The end of the soil screening plate 401 away from the flywheel 402 is inclined downward and is located on the guide rod 404. Its bottom surface is in contact with the roller sleeve 405. The drive component 403 is installed on the frame 1 and is used to drive the flywheel 402 to rotate.

[0066] The soil screening plate 401 is provided with a matrix of soil screening holes 406, which are through-hole structures. The end of the soil screening plate 401 away from the frame 1 is provided with multiple pointed protrusions 407, and multiple soil crushing plates 408 are fixed at the bottom of the end of the soil screening plate 401 away from the flywheel 402.

[0067] The drive unit 403 can be a hydraulic motor connected to the hydraulic components of the tractor, or an electric motor connected to the tractor's battery, or a pulley or drive shaft assembly connected to the tractor. All of the above implementations are used to drive the rotation of the flywheel 402 and can be customized according to the customer's actual needs.

[0068] The soil screening plate 401 has a certain weight, so under the drive of the flywheel 402, its end will not be suspended in the air, but will basically be in contact with the guide rod 404. The bottom end of the soil crushing plate 408 is sharpened to crush protrusions.

[0069] The traction assembly 2 includes a towing rod 201, a towing device 202, a lifting rod 203, and a lifting device 204. The towing device 202 is located in the middle of one side of the frame 1 in the forward direction. There are two towing rods 201, one end of which is hinged to the bottom side wall of the frame 1, and the other end is hinged to the towing device 202. The lifting device 204 is located in the middle of one side of the frame 1 in the forward direction and is above the towing device 202. There are four lifting rods 203, one end of which is fixed to the side of the frame 1, and the other end of each rod is fixed to the lifting device 204.

[0070] Both the tow tractor 202 and the hoist 204 work together with the tractor to achieve traction, lifting and transfer.

[0071] Multiple wheels 7 are installed on both sides of the bottom of the frame 1, and the wheels 7 are rotatably connected to the frame 1.

[0072] The walking wheels 7 are used to assist the frame 1 in moving forward and harvesting in the land.

[0073] Both angle adjustment mechanisms A302 and B6 are combinations of motors and reducers. The rotating shaft of the motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the main shaft 3011.

[0074] The frame 1 is provided with a long groove corresponding to the outermost vibration shaft 3013, and the vibration shaft 3013 passes through the long groove and is movably connected to it.

[0075] The long slot is used to realize the movement of the vibration shaft 3013, giving the vibration shaft 3013 ample space to move.

[0076] A harvesting method for a composite soil-crushing crop harvester includes the following steps:

[0077] Step 1: The equipment is installed on a tractor or towing equipment, with the tow tractor 202 bearing the towing force and the hoist 204 used to lift the weight of the entire equipment.

[0078] Step 2: Before the equipment moves forward in the ground, first control the angle adjustment mechanism A302 to tilt the tip of the bidirectional cutter 3012 toward the ground;

[0079] Step 3: When the equipment is pulled forward, the bidirectional cutter 3012 is inserted into the soil under force, and the vibrator 303 is controlled to generate frequency vibration. The frequency vibration of the vibrator 303 acts on the bidirectional cutter 3012, making it easier for the bidirectional cutter 3012 to be inserted into the soil. When the equipment moves forward, the bidirectional cutter 3012 inserted into the soil can pull out the crops in the soil.

[0080] Step 4: After the crops are pulled out, they can be passed backward along the bidirectional blade 3012. Since the bidirectional blade 3012 is in a vibrating state, the soil on the crops will be shaken off and fall off when they are passed backward. Crops that are not pulled out can be brought out by the second crop harvesting component 3. The second crop harvesting component 3 can clean up the crops passed from the first crop harvesting component 3.

[0081] Step 5: The crops continue to be passed to the soil sieving plate 401. The back-and-forth movement of the soil sieving plate 401 can further sift the soil off the crops. The end of the soil sieving plate 401 is in contact with the soil. When it moves back and forth, it can break the soil after it has been dug by the bidirectional blade 3012. The soil breaking plate 408 can longitudinally cut the protrusions and sharp points.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0083] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0084] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite soil-crushing crop harvester, comprising a frame (1) and a traction assembly (2), wherein the traction assembly (2) is mounted on one end of the frame (1), characterized in that: It also includes two sets of crop harvesting components (3) and soil screening components (4) installed along the frame (1); Both sets of crop harvesting components (3) include multiple interconnected vibratory digging components (301), angle adjustment mechanism A (302), and vibrator (303). The vibrator (303) and angle adjustment mechanism A (302) are fixed on both sides of the frame (1) to drive the crop harvesting components (3). The distance between any two of the vibratory digging components (301) contained in the crop harvesting assembly (3) that is close to the forward direction of the frame (1) is greater than the distance between any two of the vibratory digging components (301) contained in another set of crop harvesting assemblies (3). The vibratory excavation assembly (301) includes a main shaft (3011), a bidirectional cutter (3012), and a vibration shaft (3013). The main shaft (3011) is fixedly inserted through the center of the bidirectional cutter (3012). The vibration shaft (3013) has two parts that are fixedly inserted through the bidirectional cutter (3012). The vibration shafts (3013) of two adjacent vibratory excavation assemblies (301) are fixed to each other. The vibration output end of the vibrator (303) is fixed to the outermost vibration shaft (3013). The vibratory excavation assembly (301) also includes two bushings (3014), which are located on both sides of the bidirectional cutter (3012) and are respectively sleeved on the outside of the main shaft (3011) located at both ends of the bidirectional cutter (3012). Both ends of the main shaft (3011) are fixedly sleeved with helical springs (3015). The outer ends of the helical springs (3015) are fixed to the inner wall of the bushings (3014). Each bushing (3014) is provided with two through holes (3016) communicating with its interior. Each vibration shaft (3013) is fixedly installed with a connecting shaft (3017). The other end of the connecting shaft (3017) passes through the through hole (3016) and is fixedly connected to the main shaft (3011). The bushings (3014) included in the two adjacent vibratory excavation assemblies (301) are fixed to each other at the ends away from the bidirectional cutter (3012). The two outermost bushings (3014) pass through the two side walls of the frame (1) respectively and are rotatably connected to the frame (1). The output shaft of the angle adjustment mechanism A (302) is fixed to one of the bushings (3014). The bidirectional blade (3012) has an S-shaped structure. One end of it is curved upward at the lower part of the frame (1), and the other end of it is curved downward at the upper part of the frame (1). The middle part is transitioned by an arc-shaped section, and the arc-shaped section does not have a cutting edge.

2. The composite soil-crushing crop harvester according to claim 1, characterized in that: Inside the frame (1), between the two crop harvesting components (3), there is a guide plate (5). The two ends of the guide plate (5) are rotatably connected to the side wall of the frame (1). An angle adjustment mechanism B (6) is fixedly installed on one side of the frame (1). The angle adjustment mechanism B (6) is used to change the angle of the guide plate (5). The guide plate (5) is inclined, and its inclined upward end is close to the direction of the frame (1) and below the upper end of the bidirectional blade (3012).

3. The composite soil-crushing crop harvester according to claim 2, characterized in that: The soil screening assembly (4) includes a soil screening plate (401), a flywheel (402), a drive component (403), and a guide rod (404). There are two flywheels (402), which are rotatably connected to the inner wall of the frame (1). The soil screening plate (401) is located between the two flywheels (402). One end of the soil screening plate (401) is rotatably connected to the eccentric part of the flywheel (402). The guide rod (404) is fixed in the frame (1) and has a rotatable sleeve (405) installed on its outside. The end of the soil screening plate (401) away from the flywheel (402) is inclined downward and located on the guide rod (404). Its bottom surface is in contact with the sleeve (405). The drive component (403) is installed on the frame (1) and is used to drive the flywheel (402) to rotate. The soil screening plate (401) is provided with a matrix of soil screening holes (406), which are through-holes. The soil screening holes (406) are through-holes. The end of the soil screening plate (401) away from the frame (1) is provided with multiple pointed protrusions (407), and the bottom of the end of the soil screening plate (401) away from the flywheel (402) is fixed with multiple soil breaking plates (408).

4. The composite soil-crushing crop harvester according to claim 3, characterized in that: The traction assembly (2) includes a drag bar (201), a dragger (202), a lifting bar (203), and a lifting device (204). The dragger (202) is located in the middle of one side of the frame (1) in the forward direction. There are two drag bars (201), one end of which is hinged to the bottom side wall of the frame (1), and the other end is hinged to the dragger (202). The lifting device (204) is located in the middle of one side of the frame (1) in the forward direction. The lifting device (204) is located above the dragger (202). There are four lifting bars (203), one end of which is fixed to the side of the frame (1), and the other end of each is fixed to the lifting device (204).

5. The composite soil-crushing crop harvester according to claim 4, characterized in that: Multiple wheels (7) are installed at the bottom of both sides of the frame (1), and the wheels (7) are rotatably connected to the frame (1).

6. The composite soil-crushing crop harvester according to claim 5, characterized in that: The angle adjustment mechanism A (302) and angle adjustment mechanism B (6) are both combinations of motor and reducer. In angle adjustment mechanism A (302), the rotating shaft of the motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the main shaft (3011).

7. The composite soil-crushing crop harvester according to claim 6, characterized in that: The frame (1) is provided with a long groove corresponding to the outermost vibration shaft (3013), and the vibration shaft (3013) passes through the long groove and is movably connected to it.

8. A harvesting method for a composite soil-crushing crop harvester, utilizing the composite soil-crushing crop harvester as described in claim 7, characterized in that: Includes the following steps: S1: The equipment is installed on a tractor or towing equipment, and the towing force is borne by the towing device (202), while the lifting device (204) is used to lift the weight of the entire equipment. S2: Before the equipment moves forward in the land, the angle adjustment mechanism A (302) is first controlled to tilt the tip of the bidirectional cutter (3012) toward the land; S3: When the equipment is pulled forward, the bidirectional cutter (3012) is inserted into the soil under force, and the vibrator (303) is controlled to generate frequency vibration. The frequency vibration of the vibrator (303) acts on the bidirectional cutter (3012), making it easier for the bidirectional cutter (3012) to be inserted into the soil. When the equipment moves forward, the bidirectional cutter (3012) inserted into the soil can pull out the crops in the soil. S4: After the crops are pulled out, they can be passed backward along the double-sided blade (3012). Since the double-sided blade (3012) is in a vibrating state, the soil on the crops will be shaken off and fall off when they are passed backward. Crops that are not pulled out can be carried out by the second crop harvesting component (3). The second crop harvesting component (3) can clean up the crops passed by the first crop harvesting component (3). S5: The crop continues to be passed to the soil sieving plate (401). The soil sieving plate (401) moves back and forth to further sift the soil off the crop. The end of the soil sieving plate (401) is in contact with the ground. When it moves back and forth, it can break the soil after it has been dug by the double-headed blade (3012). The soil breaking plate (408) can break the soil after it has been dug by the double-headed blade.

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