Chained grain-pulling mixed bean combine harvester header

Abstract

The invention relates to the field of agricultural machinery, in particular to a chained seedling pulling device for mixed beans, which comprises a frame and a transmission mechanism, a chained seedling pulling device, a vibration digging and cutting device, an auxiliary picking device, a spiral auger device and the transmission mechanism are mounted on the frame, and the auxiliary picking device is mounted above the tail end of the vibration digging and cutting device. The auxiliary pick-up device is matched with the chain type seedling pulling device to pull up mixed bean plants and convey the crops backwards; the vibration digging and cutting device comprises a digging and cutting flat shovel, a separation grid plate, a shovel frame, a cutter driving rod, a connecting rod and an eccentric disc, the shovel frame is hinged to square pipes on the two sides of the rack and fixedly connected with the digging and cutting flat shovel and the separation grid plate through bolts, the digging and cutting flat shovel is located on the lower side of the front portion of the shovel frame, and the separation grid plate is additionally installed behind the digging and cutting flat shovel. The shovel frame is connected with a cutter driving rod through a bolt, the cutter driving rod is hinged to one end of a connecting rod, and an eccentric disc driven by a transmission mechanism is installed in the center of the other end of the connecting rod. The impact force on mixed bean pods is reduced, and mechanical damage is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, in particular to a chain-type harvesting platform for a straw and bean combine harvester. Background Art

[0002] As an important grain crop in my country, beans are rich in nutrients needed by the human body, such as protein, fat, carbohydrates, etc., and have important nutritional and economic value. However, at present, the harvesting of beans in the field still requires manual work, and there are problems such as tight harvest period and high labor intensity, which seriously restricts the modernization of the bean industry and the progress of agricultural mechanization in my country.

[0003] The harvester header is generally composed of mechanisms such as plowing, cutting, and conveying. It is located in front of the combine harvester and powered by the combine harvester. At present, the existing combine harvester headers for bean crops in China mainly use wheeled plowing devices and reciprocating cutters, which cause serious header losses. The wheeled plowing device is located further forward than the cutter. This installation method causes the plowing tines to hit the crop ears many times before the cutter cuts the soybean plants, causing the pods to burst under the load. The reciprocating cutter device is usually set high above the ground, higher than the bottom pod height of the miscellaneous bean crops, resulting in serious missed harvesting.

[0004] For this reason, the design of chain-type straw pulling and pulling device for miscellaneous beans was carried out to solve the technical problem of large loss of cutting table of miscellaneous bean combine harvester. The research on Xiangnu is meaningful to the development of miscellaneous bean industry and to make up for the short board of low level of mechanization technology in the whole process of miscellaneous grains. Summary of the invention

[0005] In order to solve the existing technical problem of bean pod bursting, the present invention provides a chain-type weeding and weeding combined harvester cutting table. The chain-type weeding and weeding device is used to reduce the number of times the plants are struck, and reduce the loss of grains from the cutting table caused by pod explosion. After the weeding and weeding process is completed, the freely rotating weeding and weeding rod cooperates with the eccentric shaft to clamp the weed bean plants after digging and transport them backwards into the spiral auger device. A vibrating flat shovel-type digging and cutting component is used to dig and cut the roots of the weed beans at a depth on the surface, and the plants are separated and transported backwards through the grid-type separation and transportation component at the rear. The plants are separated from the soil layer and transported backwards to enter the auxiliary picking device, completing the functions of weeding and weeding, digging, separating, and transporting.

[0006] The present invention is achieved by adopting the following technical solutions:

[0007] A chain-type straw-pulling and bean combine harvester header comprises a frame 6 and a transmission mechanism, on which a chain-type straw-pulling device 2 for supporting and guiding bean plants, a vibrating digging device 1 for cutting crops and an auxiliary picking device 3, a spiral auger device 4 and a transmission mechanism are installed, and the auxiliary picking device 3 is installed above the end of the vibrating digging device 1, and the auxiliary picking device 3 cooperates with the chain-pulling device 2 to pull up the bean plants and transport the crops backwards;

[0008] The vibrating excavation device 1 comprises: an excavation shovel 11, a separation grid plate 12, a shovel frame 13, a cutter drive rod 14, a connecting rod 15 and an eccentric disk 16. The shovel frame 13 is hinged on the square tubes on both sides of the frame, and the shovel frame 13 is fixedly connected to the excavation shovel 11 and the separation grid plate 12 by bolts respectively. The excavation shovel 11 is located at the lower front side of the shovel frame 3, and the separation grid plate 12 is installed behind the excavation shovel 11. The shovel frame 13 is hinged to the square tube of the frame, and the shovel frame 13 is connected to the cutter drive rod 14 by bolts. The cutter drive rod 14 is hinged to one end of the connecting rod 15, and an eccentric disk 16 driven by a transmission mechanism is installed at the center of the other end of the connecting rod.

[0009] Preferably, the separation grid includes: a cutting blade liner 121, a plurality of separation bars 122 are welded to the rear side of the cutting guide liner 121, the tail of the separation bars 122 are welded to the rear liner 123, and the rear liner 123 is welded to the cutting blade liner 121 through the side liner 124 on both sides.

[0010] Preferably, the installation inclination angle of the cutting blade 11 to the plane is 15°, and the angle γ formed by the upper surface of the blade and the ground is 40°.

[0011] Preferably, the chain-type straw-moving device 2 comprises: a supporting sprocket 21, a self-rotating straw-moving rod 23, a straw-moving chain 24, a driving sprocket 25, a tensioning mechanism 26 and a transmission sprocket 22. The supporting sprocket 21 is installed on the front side of the upper part of the frame 6 through a pin shaft, the driving sprocket 25 is installed on the rear side of the upper part of the frame 6 through a tensioning mechanism 26, and the transmission sprocket 22 is installed on the lower part of the side plate of the frame 6. The driving sprocket 25, the supporting sprocket 21 and the transmission sprocket 22 are distributed in a triangle, the driving sprocket 25 is connected to the transmission mechanism, and the driving sprocket 25 is respectively connected to the supporting sprocket 21 and the transmission sprocket 22 through the straw-moving chain 24. A self-rotating straw-moving rod 23 for guiding the straw-moving of crops is installed on the straw-moving chain 21, and the self-rotating straw-moving rods are evenly distributed on the straw-moving chain 21.

[0012] Preferably, when working, the bean harvester transmits power to the driving sprocket 25, and the driving sprocket 25 drives the transmission sprocket 22 and the support sprocket 21 for transportation, and the self-rotating straw rod 23 moves to the lower right along with the conveying straw chain 24.

[0013] Preferably, the auxiliary picking device 3 includes: a roller 31, a telescopic spring tooth 32, an eccentric shaft 33 and a transmission shaft 34. The roller 31 is fixed to the side plate of the frame by bolts, and the eccentric shaft 33 inside the roller 31 is connected to the transmission shaft 34 through an eccentric disk, and the transmission shaft 34 is installed on the frame; the telescopic spring tooth 32 is fixed on the eccentric shaft 33; when rotating, the roller 31 drives the telescopic spring tooth 32 to make a circular motion together.

[0014] Preferably, the spiral auger device 4 includes: rod teeth 41, rod tooth seat 43, auger eccentric shaft 44, spiral drum 45, main shaft 46, spiral blades 42 arranged in the frame recessed plate 47, the left-handed spiral blades 42 are welded on the outside of the spiral drum 45 to form a shell, the spiral drum 45 is provided with a rod tooth seat 43, the rod tooth 41 that passes through the spiral drum 45 is installed on the rod tooth seat 43, the rod tooth 41 is hinged to the auger eccentric shaft 44, and the auger eccentric shaft 44 is connected to the main shaft 46 installed on the frame through an eccentric disk.

[0015] Preferably, the crops are transported forward and toward the rod teeth 41 during the rotation of the spiral blades, and the crops are evenly transported to the bridge conveying device under the joint action of the spiral blades 42 and the rod teeth 41.

[0016] Preferably, the transmission mechanism includes: a transmission main shaft 5 of the bridge conveyor chain drive, and the transmission main shaft 5 is respectively connected to the vibrating digging device 1, the chain-type weeding device 2, the auxiliary picking device 3 and the spiral auger device 4 through a transmission chain.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The chain-type straw-pulling and pulling device for miscellaneous beans of the present invention utilizes the chain-type straw-pulling device to support and guide the miscellaneous bean plants, and adopts the vibration digging device to separate the plants from the soil during the in-soil cutting operation, thereby solving the problem of missed cutting losses caused by the low pod-forming position of bean crops. The chain-type straw-pulling device continuously guides and pulls the crops, and effectively reduces the grain loss by reducing the number and strength of the chain-type straw-pulling device hitting the bean crops. The crops are transported backward to the vibration digging device. After cutting, under the action of the auxiliary picking device and the straw-pulling device, the miscellaneous bean plants are pulled up and transported backward, and the materials are separated from the soil and the plants on the separation grid of the digging device, and the materials are transported to the bridge device through the spiral conveying device, completing all the operations of the cutting table device. The difficulties solved by the cutting table of the miscellaneous bean combine harvester are: 1) Determination of the kinematic parameters of the spatial layout of the self-rotating straw-pulling rod; 2) Vibration is the analysis of the structure and dynamic characteristics of the digging device; eccentricity is the determination of the structure and kinematic parameters of the picking and clamping conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall structural diagram of the harvester header of the chain-type rice-pulling and bean combine harvester of the present invention;

[0020] Figure 2 It is a top view of the harvester header of the chain-type rice-pulling and bean combine harvester of the present invention;

[0021] Figure 3 It is a structural diagram of the vibrating cutting device of the cutting table of the chain-type rice-pulling and bean combine harvester of the present invention;

[0022] Figure 4 It is a schematic diagram of the separation grid structure of the cutting table of the chain-type rice and bean combine harvester of the present invention;

[0023] Figure 5 It is a schematic diagram of the digging and shoveling operation of the cutting table of the chain-type rice-pulling and bean combine harvester of the present invention;

[0024] Figure 6 It is a schematic structural diagram of a chain-type reed-pulling device of a harvesting table of a chain-type reed-pulling bean combine harvester according to the present invention;

[0025] Figure 7 It is a structural diagram of the auxiliary picking and conveying device of the cutting table of the chain-type rice and bean combine harvester of the present invention;

[0026] Figure 8 It is a side view of the spiral auger device of the cutting table of the chain-type rice and bean combine harvester of the present invention;

[0027] Fig. 9 It is a working principle diagram of the lifting structure of the cutting table of the chain-type rice-pulling and bean combine harvester of the present invention;

[0028] Fig.10 It is a schematic diagram of a spiral auger device of a cutting table of a chain-type rice and bean combine harvester of the present invention;

[0029] Fig.11 The utility model is a schematic diagram of a cutting table transmission mechanism of a chain-type straw and bean combine harvester of the present invention.

[0030] In the figure: 1-vibrating digging device, 11-digging flat shovel; 12-separation grid plate; 13-shovel frame; 14-cutter driving rod; 15-connecting rod; 16-eccentric plate; 121-cutter lining plate; 122-separation grid bar; 123-rear lining plate; 124-side plate; 2-chain reed-pushing device, 21-support sprocket; 22-frame; 23-rotating reed-pushing rod; 24-reed-pushing chain; 25-driving sprocket; 26-tensioning mechanism; 27-transmission sprocket; 3-auxiliary Auxiliary picking device, 31-drum; 32-telescopic spring teeth; 33-eccentric shaft; 34-drive shaft; 4-spiral auger device, 41-rod teeth; 42-spiral blades; 43-rod tooth seat; 44-eccentric shaft; 45-housing: 46-main shaft; 5-drive main shaft; 6-frame; 10-vibration digging device chain transmission assembly; 20-chain-type weeding device power chain transmission assembly; 30-auxiliary picking device chain transmission assembly; 40-spiral auger device chain transmission assembly. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0032] Example 1

[0033] like Figure 1-2As shown, the chain-type reed-pulling and mixed bean combine harvester header includes a frame 6, on which are mounted a chain-type reed-pulling device 2 for supporting and guiding the mixed bean plants, a vibrating digging device 1 for cutting the crops, an auxiliary picking device 3, a spiral auger device 4 and a transmission mechanism. The auxiliary picking device 3 is mounted above the end of the vibrating digging device 1, and there is a gap between the vibrating digging device 1 and the bottom of the chain-type reed-pulling wheel 2. The auxiliary picking device 3 cooperates with the chain-type reed-pulling device 2 to pull up the mixed bean plants and transport the crops backwards. The spiral auger device 4 is mounted before the frame concave plate 47 and after the auxiliary picking device 3. The spiral auger device 4 and the bridge conveying device complete the transportation of the crops. During operation, the header device completes the work of supporting and guiding the crops, harvesting the crops from the roots, and picking up, feeding and transporting them backwards. The vibrating digging device adopts a vibrating flat shovel-type digging component to dig and cut off the roots of the mixed beans at a depth of 5-8 cm below the surface, and separate and transport the crops through the grid-type separation and conveying components at the back. The plants are separated from the soil layer and transported backwards to enter the auxiliary picking device to complete the functions of weeding, digging, separation, and transportation. The gap between the vibrating digging device 1 and the chain weeding wheel 2 is 5 mm. The auxiliary picking device 3 performs circular motion, and the cut miscellaneous bean plants are pulled and picked up in the feeding direction by adding telescopic spring teeth to realize backward transportation. At the same time, the spiral auger device 4 continues to transport the picked crops backwards under the action of the telescopic rod teeth, and the crops are transported to the bridge conveying device through the rotation of the spiral auger device, followed by threshing, cleaning and other operations, thus completing the whole harvesting operation of miscellaneous beans in the field.

[0034] like Figure 3In the figure, the vibrating excavation device 1 includes: an excavation shovel 11, a separation grid plate 12, a shovel frame 13, a cutter drive rod 14, a connecting rod 15 and an eccentric disk 16. The shovel frame 13 is hinged on the square tubes on both sides of the frame. The shovel frame 13 is fixedly connected with the excavation shovel 11 and the separation grid plate 12 by bolts respectively. The excavation shovel 11 is located at the lower front side of the shovel frame 3, and the separation grid plate 12 is installed behind the excavation shovel 11. The shovel frame 13 is hinged with the square tube of the cutting table frame, and the shovel frame 13 is connected with the cutter drive rod 14 by bolts. The drive rod 14 is hinged with one end of the connecting rod 15, and an eccentric disk 16 driven by a transmission mechanism is installed at the center of the other end of the connecting rod. The eccentricity of the eccentric disk is 10 mm. After the eccentric disk 16 rotates, it drives the connecting rod 15, so that the cutter drive rod 14 and the shovel frame 13 rotate around the hinge point between the shovel frame and the side plate of the frame, and finally realizes the vibration digging of the digging shovel, with an amplitude of 46.6mm and a vibration frequency of 5.88Hz. During operation, the digging shovel 11 is pushed by the cutting platform, and the reciprocating vibration of the digging shovel 11 enters the ground surface to cut at a depth of 0 to 50mm, cuts off the root system of the miscellaneous bean plant and digs it up while reducing the cutting resistance. Through the vibration of the digging device and the separation grid 12, the excavated soil is separated from the plant, and the plant is transported to the cutting platform under the action of the reeding and auxiliary picking device. The separation grid is 1200mm long and 100mm wide. The chain-type reeding device is used to continuously support, guide and send crops to the miscellaneous bean plants, and the crops are transported backward to the vibrating digging device. The miscellaneous bean plants guided by the chain-type reeding device 2 are pulled up and cut from the roots. The straw bar in the chain-type straw-pushing device has three states: movement with the conveying sprocket, machine movement, and self-circular motion. It can continuously guide and push the crops. Under the joint action of the auxiliary picking device and the straw-pushing device, the continuous pushing operation of the crops backward is completed, and the intensity and frequency of the blows to the miscellaneous bean plants are reduced, thus reducing mechanical damage.

[0035] After the vibrating digging and cutting device completes cutting, the miscellaneous bean plants are pulled up and transported backwards. The crops are separated from the soil and the plants on the separation grid at the end of the digging and cutting device. The crops are then transported to the bridge device through the spiral auger device, completing all the operations of the cutting table device.

[0036] like Figure 4 In the invention, the separation grid plate includes a cutter liner 121, a separation grid bar 122, a rear liner 123, and a side liner 124 welded together. Seven blind holes with a diameter of 10 mm are evenly distributed on the top of the cutter liner 121 for fixing the cutter. The cutter liner 121 is 1160 mm long, 48 mm wide, and 10 mm thick. Multiple groups of separation grid bars 122 with a diameter of 4 mm and a spacing of 76 mm between each group are welded on the rear side of the cutting guide liner 121, so that the soil can fall through the gap during the operation of the cutting platform, and the larger bean stalks can be intercepted on the grid plate to separate the soil from the plants. The tail of the separation grid bar 122 is welded to the rear liner 123, and the rear liner 123 is welded to the cutter liner 121 through the side liner 124 on both sides.

[0037] like Figure 5 In the process of digging and cutting flat shovel operation, the field operation speed v of the bean harvester is 1.2m / s. In order to allow the soil covering the cutting blade surface to move smoothly to the separation grid during cutting, the separation grid is installed lower than the digging and cutting flat shovel 11, and the inclination angle θ is 15°. The installation inclination angle of the digging and cutting flat shovel 1 to the plane is 15°, and the angle γ formed by the upper surface of the shovel blade and the ground is 40°. The digging and cutting flat shovel is 1200mm long and 70mm wide. It can meet the operation requirements of cutting bean plants 50-80mm into the soil.

[0038] like Figure 6 In the embodiment, the chain-type straw-pushing device 2 comprises: a supporting sprocket 21, a self-rotating straw-pushing rod 23, a straw-pushing chain 24, a driving sprocket 25, a tensioning mechanism 26 and a transmission sprocket 22. The supporting sprocket 21 is installed on the front side of the upper part of the frame 6 through a pin shaft, the driving sprocket 25 is installed on the rear side of the upper part of the frame 6 through a tensioning mechanism 26, and the transmission sprocket 22 is installed on the lower part of the side plate of the frame 6. The driving sprocket 25 is connected to the transmission main shaft, and the driving sprocket 25, the supporting sprocket 21 and the transmission sprocket 22 are distributed in a triangle. The driving sprocket 25 is connected to the supporting sprocket 21 and the transmission sprocket 22 through the straw-pushing chain 24, and the self-rotating straw-pushing rod 23 evenly distributed is installed on the straw-pushing chain 21; when working, the miscellaneous bean harvester transmits power to the driving sprocket 25, which then drives the transmission sprocket 22 and the supporting sprocket 21, and at the same time, the self-rotating straw-pushing rod 23 starts to move under the drive of the straw-pushing chain 24. When the machine is working in the field, after the self-rotating straw-pushing rod 23 contacts the head of the miscellaneous bean ear, it continues to guide and push the crop to the vibrating cutting device with its own movement, supports the crop during cutting, and pushes the cut crop backward to the auxiliary picking mechanism after cutting. The support sprocket 21 is installed at a height of 680mm, and the horizontal distance from the front end of the auxiliary picking device is 760mm. The height of the active sprocket 25 is 720mm. An angle is set between the front side of the frame and the ground, and the angle is specifically 53°. After completing the straw-pushing process, the freely rotating self-rotating straw-pushing rod 23 cooperates with the eccentric transmission shaft 34 of the auxiliary picking device to clamp the miscellaneous bean plants after cutting and transport them backward into the spiral conveying device.

[0039] The chain-type straw-pushing device meshes with the straw-pushing chain to form a conveying mechanism, which is fixed at both ends of the conveying chain. The self-rotating straw-pushing rod rotates around its own axis to reduce the grain loss caused by the friction between the self-rotating straw-pushing rod and the crop. The outer layer of the self-rotating straw-pushing rod is covered with a rubber sleeve, with a length of 1200mm, a diameter of 15mm, an inner diameter of 15mm, and an outer diameter of 25mm. The spacing between each two groups of self-rotating straw-pushing rods is 300mm. The conveying chain is triangular in shape as a whole, and the driving sprocket 25 drives the transmission sprocket 22 and the support sprocket 21 for conveying, and the straw-pushing rod moves to the lower right with the conveying chain. The movement trajectory of the self-rotating straw-pushing rod can complete the pushing operation of the miscellaneous beans, so that the stems do not rebound and are completely pressed into the auxiliary picking device, effectively reducing the number of times the bean pods are hit and the grain loss of the cutting table caused by the pod explosion. The self-rotating straw bar can continuously guide and push the crops under the combined action of the three movements of moving with the conveyor chain, its own circular motion, and linear motion as the machine moves forward, and continuously transport the crops backward to the cutting device.

[0040] like Figure 7 In the figure, the auxiliary picking device 3 includes a roller 31, a telescopic spring tooth 32, an eccentric shaft 33 and a transmission shaft 34. The roller 31 is fixed to the side plate of the frame by bolts, and the eccentric shaft 33 inside the roller 31 is connected to the transmission shaft 34 through an eccentric disk. The transmission shaft 34 is installed on the frame, and the telescopic spring tooth 32 is fixed to the eccentric shaft 33 by bolts. The interval between two adjacent spring teeth is 45mm, and the installation angle difference is 120°. The roller 31 is 1200mm long, 170mm in outer diameter, and 2mm in wall thickness. The telescopic spring tooth 4 is 125mm long and 13mm in diameter, and the eccentric distance of the eccentric disk is 45mm. When rotating, the roller 31 drives the telescopic spring tooth 32 to make a circular motion together, and the diameter of the roller is smaller than the length of the spring tooth. In order to avoid problems such as the telescopic rod teeth contacting the ground stones, soil blocks, etc. during operation, resulting in low picking quality and efficiency, the vertical position of the roller 1 is higher than the ground and lower than the lowest trajectory position of the straw bar movement. The horizontal position is between the vibration cutting device 1 and the chain-type weeding device 2 driving sprocket. To ensure the rationality of the layout of the harvesting table and the realization of the clockwise transmission of the drum. The telescopic spring teeth 32 installed on the eccentric shaft 33 make circular motion with the eccentric shaft. Because it is different from the center of the drum, it makes telescopic motion relative to the surface of the drum. When the self-rotating weeding rod moves downward from the top, the spring teeth extend and push the stems backward with the rotation. When the rod reaches the lowest position, the rod teeth rotate to the highest position and retract. The two cooperate to send the crops to the feeding device, while avoiding the phenomenon of grass returning, and effectively completing the picking operation.

[0041] like Figure 8In the embodiment, 24 telescopic spring teeth 32 are installed on the eccentric shaft 33, and the diameter of the eccentric shaft is set to 20mm. The telescopic spring teeth 32 and the eccentric shaft 33 are fixed by fastening threads 35 to ensure the stability of the connection. The telescopic spring teeth 32 move in a circle with the drum 31, and perform telescopic movements to pick up the work. The distance between the two telescopic spring teeth is set to 45mm to ensure the flexibility of the picking operation and the overall size of the cutting platform. The telescopic spring tooth rod maintains a certain distance from the chain-type weeding device to ensure transmission efficiency and stability. The telescopic spring tooth diameter is 13mm, and the telescopic spring tooth length is 125mm.

[0042] The speed of the picking and conveying mechanism has a significant impact on its picking capacity. As one of the key factors to measure the working efficiency of the device, the speed is directly related to the efficiency of crops being effectively grabbed and transported during the picking process. The appropriate speed can ensure that the auxiliary picking device can quickly and accurately grab crops during the operation, avoid crop omission or excessive damage, thereby improving the picking efficiency and quality. The calculation shows that the total picking volume Q is 612kg / h and the speed n is 80r / min.

[0043] like Fig. 9 The working principle of the pulling mechanism is: the auxiliary picking device cooperates with the chain-type straw-pulling device, and when the straw-pulling rod moves to the bottom, it works together with the picking and conveying mechanism to pull the cut beans out of the soil and convey them backwards. N is the normal force of the straw-pulling rod on the stem, Q is the friction force of the straw-pulling rod on the stem, ω 1 is the circumferential speed of the bat, ω 2 is the circumferential speed of the picking and conveying mechanism. During field operation of the harvesting platform, the straw bar and the picking and conveying mechanism move in a circular motion toward each other. When the bean stalk is at point A, the self-rotating straw bar and the auxiliary picking and conveying mechanism push together to complete the grabbing, compression and pulling operations to pull out the stalk. With the cooperation of the chain straw bar, when the straw bar moves to the bottom, the auxiliary picking device works together with the picking and conveying mechanism to pull out the cut bean crops from the soil and convey them backwards.

[0044] like Fig.10In the embodiment, the spiral auger device 4 includes: a rod tooth 41, a rod tooth seat 43, an auger eccentric shaft 44, a spiral drum 45, a main shaft 46, and a spiral blade 42 arranged in a frame concave plate 47. The left-handed spiral blade 42 is welded on the outer side of the spiral drum 45 to form a shell. The spiral drum 45 is provided with a rod tooth seat 43. The rod tooth 41 that runs through the spiral drum 45 is installed on the rod tooth seat 43. The rod tooth 41 is hinged with the auger eccentric shaft 44. The auger eccentric shaft 44 is connected to the main shaft 46 installed on the frame through an eccentric disk. During the rotation of the spiral blade 42, the crop is transported forward and toward the rod tooth 41. Under the joint action of the spiral blade 42 and the rod tooth 41, the crop is evenly transported to the bridge conveying device. Its function is to continue to transport the picked bean stalks to the rear for threshing and other operations. It has a certain flexibility and better expands the scope of operation.

[0045] When the hollow cylindrical spiral drum 45 performs circular motion, the rod teeth 41 rotates at the same time, but due to the misalignment of the centers of the two, the rod teeth 41 are extended and retracted relative to the spiral drum 45. When the spiral auger device is working, the rod teeth 41 extend forward, which is conducive to pushing the miscellaneous bean crops backward and upward. When the rod teeth 41 turn to the rear, they are retracted to avoid the phenomenon of grass returning and causing interference to the conveying operation. The spiral drum 45 has an outer diameter of 220mm and a wall thickness of 2mm. The spiral blade 42 has an outer diameter of 340mm, an inner diameter of 220mm, and a pitch of 310mm. There are 6 groups of rod teeth 41, 165mm long, 15mm in diameter, 45mm interval between each group of spring teeth, and an installation angle difference of 120°. The rod tooth shaft is 30mm long and has an eccentricity of 45mm.

[0046] like Fig.11In the embodiment, the transmission mechanism is composed of a transmission main shaft 5, a vibration digging device chain transmission assembly, a chain-type reed-pulling device chain transmission assembly, an auxiliary picking device chain transmission assembly, a spiral auger device chain transmission assembly, etc. The vibration digging device chain transmission assembly 10 includes: an eccentric disk 16 of the vibration digging device 1 and a first transmission chain connected to the transmission main shaft, the chain-type reed-pulling device chain transmission assembly 20 includes: a driving sprocket 25 of the chain-type reed-pulling device 2 and a second transmission chain connected to the transmission main shaft, the auxiliary picking device chain transmission assembly 30 includes: a transmission shaft 34 of the auxiliary picking device 3 and a third transmission chain connected to the transmission main shaft, and the spiral auger device chain transmission assembly 40 includes: a main shaft 46 of the spiral auger device 4 and a fourth transmission chain connected to the transmission main shaft; the bridge conveying device chain transmission has a transmission main shaft 5, and the transmission main shaft 5 is respectively connected to the vibration digging device 1, the chain-type reed-pulling device 2, the auxiliary picking device 3 and the spiral auger device 4 through the transmission chain. The bridge conveyor is powered by the combine harvester, with a speed of 234r / min. The bridge conveyor chain drives the transmission main shaft 1, with a transmission ratio of 1:1, to achieve a transmission main shaft speed of 234r / min. The vibration digging device chain drive ratio is 1.5:1, to achieve a vibration frequency of 5.88Hz. The chain drive ratio of the chain-type reed-pulling device is 1:2.25, to achieve a working speed of 104r / min. The chain drive ratio of the spiral auger device is 1:2.25, to achieve a roller speed of 104r / min. The chain drive ratio of the auxiliary pick-up device is 1:1, to achieve a working speed of 104r / min.

[0047] During operation, the chain-type weeding device is used to support and guide the crops into the cutting table, reducing the number of blows to the plants and the loss of grains from the cutting table caused by pod explosion. After the weeding process is completed, the freely rotating weeding rod cooperates with the eccentric shaft of the auxiliary picking device to clamp the cut and transport the miscellaneous bean plants backward into the spiral auger device. The digging and cutting flat shovel of the vibrating flat shovel type digging and cutting component is used to dig and cut the roots of the miscellaneous bean crops at a depth of 5-8cm below the surface, and the separation of the crops and the soil is completed through the separation grid at the back. The plants are separated from the soil layer and transported backward to the auxiliary picking device to complete the functions of weeding, digging, separation, and transportation. When the weeding rod moves to the bottom of the chain-type weeding device, it works together with the auxiliary picking device to complete the pulling and gathering of the crops. The spiral auger device and the telescopic spring teeth gather the crops in the cutting table and transport them to the bridge conveying device at the rear end of the cutting table. The bridge conveying device transports the crops upward and backward to the feeding entrance of the threshing device to complete the operation of the cutting table.

[0048] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chain-type harvester for harvesting rice and beans, comprising a frame (6) and a transmission mechanism, characterized in that: A chain-type weeding device (2) for supporting and guiding plants, a vibrating digging device (1) for cutting crops, an auxiliary picking device (3), a spiral auger device (4) and a transmission mechanism are installed on the frame (6). The auxiliary picking device (3) is installed above the end of the vibrating digging device (1). The auxiliary picking device (3) cooperates with the chain-type weeding device (2) to pull up plants and transport crops to the spiral auger device. The vibrating excavation device comprises: a shovel frame (13) hinged on the square tubes on both sides of the frame, the shovel frame (13) is fixedly connected to the excavation shovel (11) and the separation grid plate (12) by bolts, the excavation shovel (11) is located at the lower front side of the shovel frame (13), the separation grid plate (12) is installed behind the excavation shovel (11), the shovel frame 13 is hinged to the square tube of the frame, the shovel frame (13) is connected to the cutting knife driving rod (14) by bolts, the cutting knife driving rod (14) is hinged to one end of the connecting rod (15), and an eccentric disk (16) driven by a transmission mechanism is installed at the center of the other end of the connecting rod (15).

2. The chain-type harvester header for rice and bean harvesters according to claim 1, characterized in that: The separation grid plate comprises: a cutting blade liner (121), a plurality of separation grid bars (122) are welded to the rear side of the cutting guide liner (121), the tail of the separation grid bars (122) are welded to the rear liner (123), and the rear liner (123) is welded to the cutting blade liner (121) through the side liner plates (124) on both sides.

3. The chain-type harvester header for combined harvesters of rice and beans according to claim 1, characterized in that: The installation inclination angle of the excavation flat shovel (11) and the plane is 15°, and the angle γ formed by the upper surface of the blade of the excavation flat shovel (11) and the ground is 40°.

4. The chain-type harvester header for combined harvesters of rice and beans according to claim 1, characterized in that: The chain-type weeding device comprises: a supporting sprocket (21), a self-rotating weeding rod (23), a weeding chain (24), a driving sprocket (25), a tensioning mechanism (26) and a transmission sprocket (22); the supporting sprocket (21) is installed on the front side of the upper part of a frame (6) through a pin shaft; the driving sprocket (25) is installed on the rear side of the upper part of the frame (6) through a tensioning mechanism (26); the transmission sprocket (22) is installed on the lower part of the side plate of the frame (6); the driving sprocket (25), the supporting sprocket (21) and the transmission sprocket (22) are distributed in a triangular shape; the driving sprocket (25) is connected to the transmission mechanism; the driving sprocket (25) is respectively connected to the supporting sprocket (21) and the transmission sprocket (22) through the weeding chain (24); a self-rotating weeding rod (23) for guiding weeding crops is installed on the weeding chain (21); and the self-rotating weeding rods are evenly distributed on the weeding chain (21).

5. The chain-type harvester header for combined harvesters of rice and beans according to claim 4, characterized in that: During operation, the bean harvester transmits power to the driving sprocket (25), which drives the transmission sprocket (22) and the support sprocket (21) to transport the beans, and the rotating straw-moving rod (23) moves to the lower right along with the conveying straw-moving chain (24).

6. The chain-type harvester header for combined harvesters of rice and beans according to claim 1, characterized in that: The auxiliary picking device comprises: a roller (31), a telescopic spring tooth (32), an eccentric shaft (33) and a transmission shaft (34); the roller (31) is fixed on the side plate of the frame; the eccentric shaft (33) inside the roller (31) is connected to the transmission shaft (34) through an eccentric disk; the transmission shaft (34) is installed on the frame; the telescopic spring tooth (32) is fixed on the eccentric shaft (33); when rotating, the roller (31) drives the telescopic spring tooth (32) to perform a circular motion together.

7. The chain-type harvester header for combined harvesters of rice and beans according to claim 1, characterized in that: The spiral auger device comprises: a spiral blade (42) arranged in a frame concave plate (47), a left-handed spiral blade (42) welded on the outer side of a spiral drum (45) to form a shell, a rod tooth seat (43) is provided on the spiral drum (45), a rod tooth (41) penetrating the spiral drum (45) is installed on the rod tooth seat (43), the rod tooth (41) is hinged to the auger eccentric shaft (44), and the auger eccentric shaft (44) is connected to a main shaft (46) installed on the frame through an eccentric disk.

8. The chain-type harvester header for combined harvesters of rice and beans according to claim 7, characterized in that: During the rotation of the spiral blade, the crops are transported forward and toward the rod teeth (41), and under the joint action of the spiral blade (42) and the rod teeth (41), the crops are evenly transported to the bridge transport device.

9. The chain-type harvester header for combined harvesters of rice and beans according to claim 1, characterized in that: The transmission mechanism comprises: a transmission main shaft (5) of the bridge conveying device chain drive, and the transmission main shaft (5) is respectively connected to the vibration cutting device (1), the chain-type weeding device (2), the auxiliary picking device (3) and the spiral auger device (4) through the transmission chain.

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