Automatic crop harvesting vehicle

Abstract

The invention relates to the technical field of agricultural harvesting, and discloses an automatic crop harvesting vehicle which comprises a machine arm and a machine frame installed on the side of the machine arm, a collecting assembly is assembled on the upper layer of the machine arm, a traction assembly located on the machine frame is assembled on the side of the lower layer of the machine arm, a cutting assembly is assembled at the bottom of the machine frame, and a transmission assembly is arranged behind the machine arm. A cooling transition assembly and a lubricating and polishing assembly are further assembled at the front end of the machine frame, a husking and screening assembly is assembled at the rear end of the machine arm, and a flow guide groove located above the transmission assembly is formed between the traction assembly and the husking and screening assembly. The transmission assembly can drive the collecting assembly, the traction assembly and the cutting assembly to operate and is used for executing crop obtaining operation, straw delivery operation and straw cutting operation correspondingly, in the cutter operation process, a grinding piece synchronously executes lubricating type grinding, and meanwhile a sieve plate conducts vibration screening on threshed grains.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural harvesting, and more particularly to an automatic crop harvesting vehicle. Background Art

[0002] A crop harvester is a type of agricultural machinery specially designed to improve the efficiency and speed of crop harvesting. It can automatically complete tasks such as cutting, collecting, and preliminary processing of crops. Depending on the type of crops (such as wheat, rice, corn, etc.), there are various models and configurations of harvesters on the market to meet the needs of different environments.

[0003] When the harvester starts to operate, the cutting device will use its sharp and sturdy blade to quickly and forcefully cut the straw that enters its range of action according to the preset parameters and rhythm. At the same time, the straw conveying device is also operating synchronously. It is like a tireless "transportation channel", which transports the straw to the working area of ​​the cutting device in an orderly manner at a stable and appropriate speed, ensuring that each straw can be cut accurately and the grain is separated from the straw and sent to the grain stripping and screening device.

[0004] However, the sharpness of the blade of the cutting device will decrease after continuous operation, resulting in a decrease in cutting effect, and the blade needs to be stopped to replace, which is not conducive to continuous harvesting of crops. In addition, the straw conveying device, cutting device and grain stripping and screening device work in independent partitions, the structure is complex and occupies a large space, and maintenance is inconvenient.

[0005] Therefore, the present invention proposes an automatic crop harvester, which can automatically lubricate and grind the blade during the harvesting process, eliminating the problem of needing to shut down for maintenance due to blunt blades; at the same time, by simplifying the transmission structure of the straw conveying, cutting, and grain stripping and screening devices, it not only reduces the space occupancy of the equipment, but also reduces energy consumption. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic crop harvester to solve the problem of how to automatically lubricate and grind the blade during the harvesting process in the above-mentioned background technology, thereby eliminating the problem of needing to shut down for maintenance due to blunt blades; at the same time, by simplifying the combined transmission structure of the straw conveying, cutting and grain stripping and screening devices, the problem of energy consumption is reduced.

[0007] The present invention provides the following technical solution: an automatic crop harvester, comprising an arm and a frame installed beside the arm, wherein the upper layer of the arm is equipped with a collecting assembly, the lower layer side of the arm is equipped with a traction assembly located on the frame, the bottom of the frame is equipped with a cutting assembly, the rear of the arm is provided with a transmission assembly, the front end of the frame is also equipped with a cooling transition assembly and a lubrication and grinding assembly, the rear end of the arm is equipped with a stripping and screening assembly, and a guide groove located above the transmission assembly is provided between the traction assembly and the stripping and screening assembly; The cutting assembly comprises an axle seat and a cutter mounted around the rotating disk thereof, wherein the axle rod of the axle seat is rotatably arranged on the bottom wall of the frame through a bearing; The lubrication and grinding assembly comprises an oil collecting pipe, a piston tube, a grinding piece and a first spring, wherein the oil collecting pipe is mounted on the bottom frame of the frame, the plug disc at the top end of the piston tube can be telescopically inserted into the oil collecting pipe, the piston tube body is fixedly connected to the grinding piece, the liquid cavity of the oil collecting pipe is connected to the narrow passage in the piston tube body, a plurality of one-way capillaries connected to the piston tube are arranged inside the grinding piece, a grinding layer is arranged on the bottom wall of the grinding piece, the grinding piece can fit with the cutter, and a first spring is connected between the top wall end of the grinding piece and the oil collecting pipe; The grain stripping and screening assembly includes a material box, a screen plate, a push rod, a second spring and a hopper, wherein the material box is installed at the rear end of the machine arm, a hopper is assembled in the material box and its inner cavity is divided into a stripping chamber and a screening chamber, a crushing device is arranged in the stripping chamber, a screen plate is slidably arranged in the screening chamber, a push rod is fixedly connected to the side of the screen plate close to the frame, the cutter can rotate to push the push rod, a slide groove for the push rod to move is opened on the side wall of the material box, and the push rod is connected to the side wall of the material box by a second spring.

[0008] Furthermore, the cutter adopts a downward tilt design and forms a sharp cutting edge through a single-side grinding process.

[0009] Furthermore, the collecting assembly includes a pulley, a chain, a push plate and a rotating shaft, wherein the pulley is rotatably arranged in the wheel groove at the front and rear ends of the machine arm through the rotating shaft, the two pulleys are connected by chain transmission, and the contact parts of the pulley and the chain are meshed, the outer wall of the chain is fixedly connected with a push plate, and a motor is loaded above the rotating shaft on either side.

[0010] Furthermore, the traction assembly includes a worm roller, a blade roller and a coupling gear set, wherein the worm roller and the blade roller are arranged horizontally and are both set on the rear side plate of the frame through bearing transmission, and the coupling gear set is installed at one end of the worm roller and the blade roller close to the rear side plate of the frame.

[0011] Furthermore, the transmission assembly includes a transmission gear, a first transmission roller, a second transmission roller, a worm and a bevel gear group, wherein the transmission gear is assembled on the rear rotating shaft and is located in the wheel groove of the lower layer of the pulley, the transmission gear is meshed with the worm installed at the end of the first transmission roller, the first transmission roller and the worm roller, as well as the first transmission roller and the second transmission roller are all connected by a bevel gear group, the second transmission roller is rotatably set on the rear side plate of the frame through a bearing, and the second transmission roller and the near end of the shaft seat are also connected by a bevel gear group.

[0012] Furthermore, the length of the push plate is set to at least exceed the position of the gap between the worm roller and the blade roller, and the transmission assembly also includes a positioning frame installed on the machine arm, and the first transmission roller is rotatably set on the positioning frame.

[0013] Furthermore, the cooling transition assembly includes a cooling cylinder, a one-way discharge valve, an oil pipeline, a one-way feed valve and an impeller, wherein the cooling cylinder is mounted on the front side plate of the frame, an impeller assembled on the end of an impeller roller is rotatably arranged in the cooling cylinder, a one-way feed valve and a one-way discharge valve are respectively installed on the top and bottom sides of the cooling cylinder, wherein the one-way discharge valve is connected to the oil collecting pipe through the oil pipeline, the one-way feed valve is connected to the supply source, and the impeller roller can carry the impeller to rotate, thereby accelerating the cooling of the lubricating oil in the inner cavity of the cooling cylinder.

[0014] Furthermore, the frame is a U-shaped outward-extending frame structure, which is integrally formed by front and rear side panels and a base frame, wherein the rear side panel is mounted on the machine arm and extends outward to connect to the base frame, and an opening is reserved between the front side panel and the machine arm for crops to enter the gap between the worm roller and the blade roller.

[0015] Technical effects and advantages of the present invention: The present invention cooperates with the use of a cutting component, a lubricating and grinding component, and a grain stripping and screening component. When the cutter rotates and approaches the lubricating and grinding component, the grinding part that matches with it and the piston tube installed thereon can be gradually lifted up to compress the lubricating oil collected in the liquid cavity of the oil collecting tube and the total space of the narrow channel of the piston tube, so that the lubricating oil can seep out through the one-way capillary of the grinding part. On the one hand, the seeped lubricating oil drips on the surface of the cutter passing through, and the cutter will be sharpened once after passing over the grinding layer of the bottom wall of the grinding part. On the other hand, the rotation of the cutter passing over the push rod can cause the screen plate to swing under the elastic force of the second spring. Similarly, after the cutter cancels the squeezing of the grinding part, the grinding part and the piston tube can be reset under the elastic force of the first spring, and the oil collecting tube expands. Then, the lubricating oil in the cooling cylinder can be introduced into the oil collecting tube through the one-way discharge valve and the oil pipe for automatic rehydration. That is, during the operation of the cutter, the grinding part synchronously performs lubricating grinding, and the screen plate performs oscillating screening on the threshed grains. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention from a front side perspective.

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention from a rear side perspective.

[0018] Figure 3 For the present invention Figure 2 Schematic diagram of the structure and its local cross-section.

[0019] Figure 4 For the present invention Figure 3 Schematic diagram of further disassembly of the structure.

[0020] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A in the middle.

[0021] Figure 6 For the present invention Figure 4 The remaining structure without the collecting assembly and part of the transmission assembly and its further cross-sectional schematic diagram.

[0022] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point B in the middle.

[0023] Figure 8 For the present invention Figure 6 Schematic diagram of the structure at point C in the middle.

[0024] Fig. 9 It is a schematic diagram of the contact between the lubrication and grinding assembly and the cutter structure of the present invention.

[0025] The accompanying drawings are marked as follows: 1, machine arm; 2, frame; 3, collecting assembly; 301, pulley; 302, chain; 303, push plate; 304, rotating shaft; 4, transmission assembly; 401, transmission gear; 402, first transmission roller; 403, second transmission roller; 404, worm; 405, bevel gear set; 406, positioning frame; 5, traction assembly; 501, worm roller; 502, blade roller; 503, coupling gear set; 6, cutting assembly; 601, shaft seat; 602 , cutter; 7, cooling transition assembly; 701, cooling cylinder; 702, one-way discharge valve; 703, oil pipeline; 704, one-way feed valve; 705, impeller; 8, lubrication and grinding assembly; 801, oil collecting pipe; 802, piston tube; 803, grinding part; 804, first spring; 805, limiter; 9, grain stripping and screening assembly; 901, material box; 902, screen plate; 903, push rod; 904, second spring; 905, hopper; 10, guide trough. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The automatic crop harvester involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0027] Reference Figure 1-9 The present invention provides an automatic crop harvester, comprising an arm 1 and a frame 2 installed beside the arm 1, wherein the upper layer of the arm 1 is equipped with a collecting component 3, the lower layer side of the arm 1 is equipped with a traction component 5 located on the frame 2, the bottom of the frame 2 is equipped with a cutting component 6, and a transmission component 4 is arranged at the rear of the arm 1, the transmission component 4 can drive the collecting component 3, the traction component 5 and the cutting component 6 to operate, so as to respectively perform crop acquisition operation, straw delivery operation and straw cutting operation, the front end of the frame 2 is also equipped with a cooling transition component 7 and a lubrication and grinding component 8, the rear end of the arm 1 is equipped with a stripping and screening component 9, a guide groove 10 located above the transmission component 4 is arranged between the traction component 5 and the stripping and screening component 9, and the cutting component 6 can continuously act on the lubrication and grinding component 8 and the stripping and screening component 9 during operation.

[0028] In this embodiment, it should be specifically explained that the frame 2 is a U-shaped outward-extending frame structure, which is formed integrally by front and rear side plates and a bottom frame, wherein the rear side plate is mounted on the machine arm 1 and extends outward to connect the bottom frame, and an opening is reserved between the front side plate and the machine arm 1 for crops to enter the gap between the worm roller 501 and the leaf roller 502, so that the crops sandwiched in the gap between the worm roller 501 and the leaf roller 502 can be delivered downward without obstacles while being transported backwards; In this article, all the positional relationships we discuss about front, back, left, and right are based on Figure 1-4 The directions are defined by the perspective presented. These directions do not have actual geographical or physical meaning. They are just a reference frame set to help readers understand the content of the article more intuitively. In this way, we can show the relative position relationship between the various parts more clearly, making the entire discussion process easier to understand and follow. Please note that this custom direction mark is only for internal use in this article and does not represent any absolute direction or position in the real world. The improvement in this implementation focuses on the front operating harvesting part of the harvester, which is usually the key area for realizing the functions of the harvester and improving efficiency. The onboard part, as the support and transportation structure of the harvester, is crucial to the operation of the entire vehicle, but has not been improved or innovated in this embodiment and is therefore regarded as prior art and does not need to be elaborated in detail.

[0029] Reference Figure 3-6 The collecting component 3 includes a pulley 301, a chain 302, a push plate 303 and a rotating shaft 304, wherein the pulley 301 is rotatably arranged in the wheel groove at the front and rear ends of the machine arm 1 through the rotating shaft 304, and the two pulleys 301 are connected through the chain 302, and the pulley 301 can mesh with the contact part of the chain 302, and the outer wall of the chain 302 is fixedly connected with a plurality of push plates 303, and a motor can be loaded above the rotating shaft 304 on either side, and the output shaft of the motor drives the rotating shaft 304 connected thereto to rotate through a coupling, and this rotating shaft 304 carries the pulley 301 mounted thereon to rotate coaxially, and the front and rear pulleys 301 are driven by the chain 302, and then the chain 302 can carry the push plate 303 to be transported from front to back under the drive of the pulley 301, so that the push plates 303 that arrive at the turning point in front of the chain 302 in turn cut off the crops and carry them to the top of the traction component 5, thereby achieving the task of obtaining and transporting the crops; The traction assembly 5 includes a worm roller 501, a blade roller 502 and a coupling gear set 503, wherein the worm roller 501 and the blade roller 502 are arranged horizontally and are both rotatably arranged on the rear side plate of the frame 2 through bearings, and the coupling gear set 503 is installed at one end of the worm roller 501 and the blade roller 502 close to the rear side plate of the frame 2, so that the worm roller 501 and the blade roller 502 can rotate toward each other from outside to inside, so as to continuously pull the straw part of the crop downward, so that the crop is continuously pulled downward while being transported backward, so as to realize the task of transporting the crop and delivering the straw, wherein delivering the straw refers to delivering the straw; The transmission assembly 4 includes a transmission gear 401, a first transmission roller 402, a second transmission roller 403, a worm 404 and a bevel gear set 405, wherein the transmission gear 401 is assembled on the rear rotating shaft 304 and is located in the wheel groove of the lower layer of the pulley 301, and the transmission gear 401 can be meshed with the worm 404 installed at the end of the first transmission roller 402, and the first transmission roller 402 and the worm roller 501 as well as the first transmission roller 402 and the second transmission roller 403 are all connected by the bevel gear set 405 for transmission, and the second transmission roller 403 is connected by the bevel gear set 405. The second transmission roller 403 is rotatably arranged on the rear side plate of the frame 2 through the bearing, and the near end of the shaft seat 601 is also connected by the bevel gear set 405. The rear rotating shaft 304 can carry the transmission gear 401 installed on the lower layer to rotate coaxially, and transmit the worm 404 meshing with it, so that the worm 404 and the first transmission roller 402 rotate coaxially. The first transmission roller 402 transmits the torque force to the worm roller 501 and the second transmission roller 403 respectively through the two sets of bevel gear sets 405, so as to prompt the traction assembly 5 and the cutting assembly 6 to start working; The cutting assembly 6 includes an axle seat 601 and a cutter 602 installed around its turntable. The shaft of the axle seat 601 is rotatably set on the bottom wall of the frame 2 through a bearing. The cutter 602 adopts a downward inclination design and forms a sharp cutting edge through a single-side grinding process. The second transmission roller 403 will drive the cutting assembly 6 through the bevel gear set 405 constructed with the end of the axle seat 601, so that the whole assembly rotates around the axis, that is, the cutter 602 can rotate and cut from the back to the front to continuously cut the crop straw part that is continuously delivered downward.

[0030] In this embodiment, it should be specifically noted that the length of the push plate 303 is set to at least exceed the gap between the worm roller 501 and the blade roller 502, so that the push plate 303 can pull the crop to the top of the traction assembly 5; The transmission assembly 4 further includes a positioning frame 406 mounted on the machine arm 1 , and the first transmission roller 402 is rotatably disposed on the positioning frame 406 .

[0031] Reference Figure 6-9 The lubrication and grinding assembly 8 includes an oil collecting pipe 801, a piston tube 802, a grinding piece 803 and a first spring 804, wherein the oil collecting pipe 801 is installed on the bottom frame of the frame 2, the plug plate at the top of the piston tube 802 can be retracted and inserted into the oil collecting pipe 801, the tube body of the piston tube 802 is fixedly connected to the grinding piece 803, the liquid cavity of the oil collecting pipe 801 and the narrow passage in the tube body of the piston tube 802 are connected, the interior of the grinding piece 803 is provided with a plurality of one-way capillaries connected to the piston tube 802, the bottom wall of the grinding piece 803 is provided with a grinding layer, and the grinding piece 803 can be connected with the cutter 602 A first spring 804 is connected between the top wall end of the grinding piece 803 and the oil collecting pipe 801. When the cutter 602 rotates close to the lubricating and grinding assembly 8, the grinding piece 803 and the piston tube 802 mounted thereon that match with it can be gradually lifted up to compress the lubricating oil collected in the liquid cavity of the oil collecting pipe 801 and the total space of the narrow passage of the piston tube 802, so that the lubricating oil can seep out through the unidirectional capillary of the grinding piece 803. On the one hand, the seeping lubricating oil drips on the surface of the cutter 602 passing by, and the cutter 602 will be sharpened once after passing over the grinding layer of the bottom wall of the grinding piece 803. The cooling transition assembly 7 includes a cooling cylinder 701, a one-way discharge valve 702, an oil delivery pipe 703, a one-way feed valve 704 and an impeller 705, wherein the cooling cylinder 701 is mounted on the front side plate of the frame 2, and an impeller 705 assembled on the end of the impeller roller 502 is rotatably arranged in the cooling cylinder 701, and a one-way feed valve 704 and a one-way discharge valve 702 are respectively mounted on the top and bottom sides of the cooling cylinder 701, wherein the one-way discharge valve 702 is connected to the oil collecting pipe 801 through the oil delivery pipe 703, and the one-way feed valve 704 is connected to the supply source, and the impeller roller 502 can carry the impeller 705 to rotate, accelerating the cooling cylinder 7 01 Lubricating oil cooling in the inner cavity, the cooling cylinder 701 can provide cold oil for the oil collecting pipe 801. During the grinding process, the interaction between the grinding layer and the workpiece will generate a large amount of grinding heat, forming local instantaneous high temperature in the grinding area, such as the formation of surface oxide layer, amorphous structure layer, and high-temperature tempering layer. However, cold oil lubrication can provide a better cooling effect during the cutting process, which helps to reduce the temperature of the tool, reduce thermal deformation and wear, which is very important for maintaining the sharpness of the cutting tool and extending its service life. In addition, cold oil lubrication can also reduce friction, making the cutting process smoother, thereby improving cutting efficiency; The grain stripping and screening assembly 9 includes a material box 901, a screen plate 902, a push rod 903, a second spring 904 and a hopper 905, wherein the material box 901 is installed at the rear end of the machine arm 1, and a hopper 905 is installed in the material box 901, and its inner cavity is divided into a stripping chamber and a screening chamber, and a crushing device is arranged in the stripping chamber, and a screen plate 902 is slidably arranged in the screening chamber, and a push rod 903 is fixedly connected to the side of the screen plate 902 close to the frame 2, and the cutter 602 can rotate to push the push rod 903, and a slide groove for the push rod 903 to move is provided on the side wall of the material box 901, and the push rod 903 is connected to the side wall of the material box 901 by the second spring 904, and when the cutter 602 rotates close to the push rod 903, it can push the push rod 903 and the connected screen plate 902, and when the force on the push rod 903 is removed, the screen plate 902 can be reset under the traction of the elastic force of the second spring 904, so as to realize dynamic screening of the screen plate 902. In this embodiment, it should be specifically explained that the lubricating and grinding assembly 8 also includes a limiter 805 installed on the frame 2, and the bottom end of the limiter 805 extends to the bottom of the side wing of the grinding member 803 to assist in limiting the grinding member 803, that is, after the cutter 602 cancels the squeezing of the grinding member 803, the grinding member 803 and the piston tube 802 will sink under the elastic force of the first spring 804, and at this time, the limiter 805 resists the side wing of the grinding member 803, so that the piston tube 802 and the grinding member 803 are suspended here, sharing the force acting on the top plug of the piston tube 802; The grinding layer usually refers to the part of the grinding tool that contacts the workpiece and performs grinding. This part is composed of abrasives such as superhard materials such as artificial diamonds and cubic boron nitride or ordinary abrasives, fillers and binders.

[0032] Working principle of the present invention: The harvester moves along the vertical row of crops at a uniform speed, wherein the output shaft of the motor drives the connected shaft 304 to rotate through the coupling, and the shaft 304 carries the pulley 301 installed on the upper layer to rotate coaxially, and the front and rear pulleys 301 are driven by the chain 302, and then the chain 302 can carry the push plate 303 to be transported from front to rear under the drive of the pulley 301, so that the push plate 303 that arrives at the turning point in front of the chain 302 in turn cuts off the crop and pulls it to the top of the traction component 5, so as to achieve the task of obtaining and transporting the crop. At the same time, the rear shaft 304 can carry the transmission gear 401 installed on the lower layer to rotate coaxially, and drive the worm 404 meshing with it, so that the worm 404 and the first transmission roller 402 rotate coaxially, and the first transmission roller 402 transmits the torque force to the worm roller 501 through two sets of bevel gear sets 405 respectively. and the second transmission roller 403. On the one hand, after the worm roller 501 receives the torque force, it is transmitted through the coupling gear set 503, so that the worm roller 501 and the blade roller 502 can rotate from the outside to the inside, so as to continuously pull the crop straw part downward, so that the crop is continuously pulled downward while being transported backward, so as to realize the task of transporting and delivering the crop. At the same time, the second transmission roller 403 will drive the cutting assembly 6 through the bevel gear set 405 constructed with the end of the shaft seat 601, so that the whole body rotates around the axis, that is, the cutter 602 can rotate and cut from the back to the front, so as to continuously cut the crop straw part that is continuously delivered downward. However, the crop fruit at the end of the straw cannot pass through the gap between the worm roller 501 and the blade roller 502, and will continue to be transported backward and merged into the stripping cabin of the material box 901 through the guide groove 10, and the crushing device arranged in the stripping cabin will thresh the grains (fruits); At the same time, when the cutter 602 rotates and approaches the lubricating and grinding assembly 8, the grinding piece 803 and the piston tube 802 mounted thereon that match it can be gradually lifted up, so that the plug plate at the top of the piston tube 802 can move up along the liquid cavity of the oil collecting pipe 801 to compress the lubricating oil collected in the total space of the narrow channel of the liquid cavity of the oil collecting pipe 801 and the piston tube 802, so that the lubricating oil can seep out through the unidirectional capillary of the grinding piece 803. On the one hand, the seeped lubricating oil drips on the surface of the cutter 602 passing by, and the cutter 602 will be sharpened once after passing over the grinding layer of the bottom wall of the grinding piece 803, so as to achieve lubrication and grinding of the cutter 602. On the other hand, the cutter 602 rotates close to the push rod 903, which can push the push rod 903 and the connected sieve plate 902. When the force on the push rod 903 is cancelled, the sieve plate 902 can be reset under the elastic force of the second spring 904, so as to realize the dynamic screening of the sieve plate 902. Similarly, after the cutter 602 cancels the squeezing of the grinding part 803, the grinding part 803 and the piston tube 802 can be reset under the elastic force of the first spring 804, so as to expand the oil collecting pipe 801, and then the lubricating oil in the cooling cylinder 701 can be introduced into the oil collecting pipe 801 through the one-way discharge valve 702 and the oil pipeline 703 for automatic liquid replenishment.

[0033] During the operation of the cutter 602, the grinding element 803 performs lubricated grinding synchronously, while the screen plate 902 performs oscillating screening of the threshed grains.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or modifications within the technical scope disclosed by the present invention; according to the technical plan and its improved conception of the present invention, all of which should be included under the protection of the present invention.

Claims

1. An automatic crop harvester, comprising an arm (1) and a frame (2) mounted on the side thereof, characterized in that: The upper layer of the machine arm (1) is equipped with a collecting assembly (3), the lower layer side of the machine arm (1) is equipped with a traction assembly (5) located on the frame (2), the bottom of the frame (2) is equipped with a cutting assembly (6), the rear of the machine arm (1) is provided with a transmission assembly (4), the front end of the frame (2) is also equipped with a cooling transition assembly (7) and a lubrication and grinding assembly (8), the rear end of the machine arm (1) is equipped with a grain stripping and screening assembly (9), and a guide groove (10) located above the transmission assembly (4) is provided between the traction assembly (5) and the grain stripping and screening assembly (9); The cutting assembly (6) comprises an axle seat (601) and a cutter (602) mounted around a rotating disk thereof, wherein the axle rod of the axle seat (601) is rotatably arranged on the bottom wall of the frame (2) via a bearing; The lubrication and grinding assembly (8) comprises an oil collecting pipe (801), a piston tube (802), a grinding piece (803) and a first spring (804), wherein the oil collecting pipe (801) is mounted on a bottom frame of the frame (2); a plug disc at the top end of the piston tube (802) is telescopically plugged into the oil collecting pipe (801); the body of the piston tube (802) is fixedly connected to the grinding piece (803); a liquid cavity of the oil collecting pipe (801) and a narrow passage in the body of the piston tube (802) are connected; a plurality of one-way capillaries connected to the piston tube (802) are arranged inside the grinding piece (803); a grinding layer is arranged on the bottom wall of the grinding piece (803); the grinding piece (803) can fit with the cutter (602); and a first spring (804) is connected between the top wall end of the grinding piece (803) and the oil collecting pipe (801); The stripping and screening assembly (9) comprises a material box (901), a screen plate (902), a push rod (903), a second spring (904) and a hopper (905), wherein the material box (901) is installed at the rear end of the machine arm (1), the material box (901) is equipped with a hopper (905) and its inner cavity is divided into a stripping chamber and a screening chamber, a crushing device is arranged in the stripping chamber, a screen plate (902) is slidably arranged in the screening chamber, a push rod (903) is fixedly connected to a side of the screen plate (902) close to the frame (2), the cutter (602) can rotate to push the push rod (903), a sliding groove for the push rod (903) to move is opened on the side wall of the material box (901), and the push rod (903) is connected to the side wall of the material box (901) via the second spring (904).

2. The automatic crop harvesting vehicle according to claim 1, characterized in that: The cutter (602) is designed with a downward tilt angle and a sharp cutting edge is formed by a single-side grinding process.

3. The automatic crop harvesting vehicle according to claim 1, characterized in that: The collecting assembly (3) comprises a pulley (301), a chain (302), a push plate (303) and a rotating shaft (304), wherein the pulley (301) is rotatably arranged in a wheel groove at the front and rear ends of the machine arm (1) via the rotating shaft (304), the two pulleys (301) are connected to each other via the chain (302), and the contact parts of the pulley (301) and the chain (302) are meshed, the outer wall of the chain (302) is fixedly connected to the push plate (303), and a motor is mounted above the rotating shaft (304) on either side.

4. The automatic crop harvesting vehicle according to claim 3, characterized in that: The traction assembly (5) comprises a worm roller (501), a blade roller (502) and a coupling gear set (503), wherein the worm roller (501) and the blade roller (502) are arranged horizontally and are both rotatably arranged on the rear side plate of the frame (2) via bearings, and the coupling gear set (503) is installed at one end of the worm roller (501) and the blade roller (502) close to the rear side plate of the frame (2).

5. The automatic crop harvesting vehicle according to claim 4, characterized in that: The transmission assembly (4) comprises a transmission gear (401), a first transmission roller (402), a second transmission roller (403), a worm (404) and a bevel gear set (405), wherein the transmission gear (401) is assembled on the rear rotating shaft (304) and is located in the wheel groove of the lower layer of the pulley (301), the transmission gear (401) is meshed with the worm (404) installed at the end of the first transmission roller (402), the first transmission roller (402) and the worm roller (501) as well as the first transmission roller (402) and the second transmission roller (403) are all connected in transmission via the bevel gear set (405), the second transmission roller (403) is rotatably arranged on the rear side plate of the frame (2) via a bearing, and the second transmission roller (403) is also connected in transmission via the bevel gear set (405) to the near end of the shaft seat (601).

6. The automatic crop harvesting vehicle according to claim 5, characterized in that: The length of the push plate (303) is set to at least exceed the position of the gap between the worm roller (501) and the blade roller (502), and the transmission assembly (4) further includes a positioning frame (406) installed on the machine arm (1), and the first transmission roller (402) is rotatably set on the positioning frame (406).

7. The automatic crop harvesting vehicle according to claim 4, characterized in that: The cooling transition assembly (7) comprises a cooling cylinder (701), a one-way discharge valve (702), an oil delivery pipe (703), a one-way feed valve (704) and an impeller (705), wherein the cooling cylinder (701) is mounted on the front side plate of the frame (2), an impeller (705) assembled on the end of an impeller roller (502) is rotatably arranged in the cooling cylinder (701), and a one-way feed valve (704) and a one-way discharge valve (702) are respectively mounted on the top and bottom sides of the cooling cylinder (701), wherein the one-way discharge valve (702) is connected to the oil collecting pipe (801) via the oil delivery pipe (703), the one-way feed valve (704) is connected to a supply source, and the impeller roller (502) can carry the impeller (705) to rotate, thereby accelerating the cooling of the lubricating oil in the inner cavity of the cooling cylinder (701).

8. The automatic crop harvesting vehicle according to claim 1, characterized in that: The frame (2) is a U-shaped outwardly extending frame structure, which is formed integrally of front and rear side panels and a bottom frame, wherein the rear side panel is mounted on the machine arm (1) and extends outwardly to connect to the bottom frame, and an opening is reserved between the front side panel and the machine arm (1) for crops to enter the gap between the worm roller (501) and the leaf roller (502).

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