Header for harvesting sesame

Abstract

The utility model discloses a cutting table for harvesting sesame, which comprises a cutting table frame, a feeding auger arranged in the cutting table frame, a plurality of ear picking units uniformly distributed and fixed on a cross beam at the front end of the cutting table frame, a grain divider arranged on a grain pulling chain component between two adjacent ear picking units, and a gap bridge shaft arranged on the rear side of the cutting table frame, the corn harvester is characterized in that the divider comprises a base, a front protective cover is fixed at the front end of the base, an upper tray is hinged to the rear end of the base through a pin shaft, vertical edges are arranged on the two sides and the edge of the front end of the upper tray, and the lower end of the upper tray is hinged to the lower end of the base through a pin shaft. The upper tray falls on the base in an initial state and is used for receiving sesame seeds falling in a harvesting process; a driving mechanism is arranged on the base close to the front end, abuts against the bottom face of the upper tray and is used for driving the upper tray to swing in a reciprocating mode with the pin shaft as the axis. The header can realize grain recovery and reduce harvesting loss.

Description

Technical Field

[0001] The utility model relates to a cutting platform, in particular to a cutting platform for harvesting sesame. Background Art

[0002] Sesame is one of my country's traditional specialty oil crops. At present, mechanized production of sesame land preparation, sowing and intertillage management has been basically realized in production. Since the maturity period of sesame is inconsistent and the mature sesame capsule will be fully opened, the seeds are easy to fall and the straw is brittle and easy to break; therefore, the current harvesting process mainly uses manual harvesting, and the relevant research on special machinery for sesame harvesting is not yet mature. In actual production, manual harvesting is time-consuming and labor-intensive, resulting in high harvesting costs.

[0003] At present, the mechanical harvesting method mostly uses the traditional grain harvesting platform to harvest sesame. During the harvesting process, when the grain divider and the cutter touch the mature and dry sesame plants, the grains are easily separated from the sesame capsules, resulting in a high mechanical harvesting loss rate and serious sesame spillage, causing great economic losses to farmers. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a harvesting platform for sesame, which can realize seed recovery and reduce harvesting losses.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A sesame harvesting header comprises a header frame, a rotatable feeding auger is installed in the header frame, a plurality of ear picking units are evenly fixed on a crossbeam at the front end of the header frame, a grain divider is provided on a grain chain assembly between two adjacent ear picking units, a bridge shaft is rotatably installed on the rear side of the header frame, and the bridge shaft is transmission-connected with the central shaft of the feeding auger and the input shaft of the ear picking unit through a transmission mechanism arranged on one side of the header frame, and is characterized in that:

[0007] The crop divider comprises a base, a front shield is fixed at the front end of the base, an upper tray is hinged at the rear end of the base through a pin shaft, vertical edges are provided at both sides and the front edge of the upper tray, and the upper tray falls on the base in an initial state, and is used to receive sesame seeds dropped during the harvesting process;

[0008] A driving mechanism is provided on the base near the front end, and the driving mechanism abuts against the bottom surface of the upper tray and is used to drive the upper tray to swing back and forth with the pin shaft as the axis.

[0009] A further improvement of the technical solution of the utility model is that the inner bottom surface of the upper tray is in the shape of a slide, so that the sesame seeds can slide into the feeding auger at the rear.

[0010] A further improvement of the technical solution of the present utility model lies in that: the driving mechanism includes a reduction motor fixed on the base through a motor base, and a cam is fixed at the output end of the reduction motor.

[0011] A further improvement of the technical solution of the present utility model lies in that: a tension spring is provided between the front end of the upper tray and the base, and the upper tray is closely attached to the outer edge of the cam under the action of the tension spring.

[0012] A further improvement of the technical solution of the present utility model lies in that: a shock-absorbing plate is provided at the bottom of the upper tray corresponding to the cam, and the shock-absorbing plate is made of nylon material to prevent direct contact between the cam and the upper tray and cause wear.

[0013] A further improvement of the technical solution of the present utility model lies in that: side guard plates are symmetrically fixed on both sides of the bottom surface of the front part of the upper tray, and the side guard plates surround the outside of the vertical edges provided on both sides of the front part of the base to prevent crop seeds from falling between the upper tray and the base.

[0014] A further improvement of the technical solution of the present utility model lies in that: the base is a welded part formed by welding a front bottom plate and a rear bottom plate, which is convenient for processing.

[0015] A further improvement of the technical solution of the present utility model lies in that: brushes are evenly fixed on each of the two reel chain assemblies of each ear picking unit, and the brushes corresponding to the feeding channel on the two reel chain assemblies are vertically displaced and partially overlapped to achieve the closure of the feeding channel and reduce the loss of seed dropping during sesame harvesting.

[0016] A further improvement of the technical solution of the present utility model lies in that: a blade mounting disc is installed on an output shaft on the top surface of the gearbox at the rear end of each ear picking unit, and blades are evenly fixed on the blade mounting disc in a circumferential manner for cutting the rootstems of sesame straws.

[0017] A further improvement of the technical solution of the present utility model lies in that: a left side cover assembly and a right side cover assembly are respectively fixed at both ends of the cutter bar frame and outside the ear picking units on both sides, and a protective plate is provided at the upper rear end of the cutter bar frame, and the protective plate is connected between the rear ends of the left side cover assembly and the right side cover assembly to reduce the loss of sesame seed dropping during cutter bar harvesting.

[0018] The beneficial effects of the present utility model are:

[0019] 1. Since an upper tray is hinged to the rear end of the base of the dividing harrow through a pin shaft, vertical edges are provided on both sides and the front edge of the upper tray, and the upper tray falls on the base in the initial state, the upper tray can be used as a rear guard of the dividing harrow and can receive the crop seeds dropped during the harvesting process, especially for crops such as sesame whose seeds are easy to drop;

[0020] 2. By means of the driving mechanism provided near the front end of the base and abutting against the bottom surface of the upper tray, the upper tray can be driven to swing reciprocally around the pin shaft. Through the regular reciprocal swing of the upper tray, the sesame seeds in the recovery tank can be introduced into the subsequent feeding auger and recycled into the granary, thus realizing the return of the seeds to the granary, reducing the harvesting loss, lowering the harvesting cost, and improving the economic benefit. Brief Description of the Drawings

[0021] Figure 1 is a schematic three-dimensional structure diagram of the present utility model.

[0022] Figure 2 is a top view of the present utility model.

[0023] Figure 3 is a front view of the present utility model.

[0024] Figure 4 is a schematic structure diagram of the divider of the present utility model.

[0025] Figure 5 is Figure 4 the top view of

[0026] Figure 6 is Figure 5 the A-A cross-sectional view of

[0027] Figure 7 is Figure 6 the partial enlarged view of

[0028] Figure 8 is the schematic three-dimensional structure diagram of the divider.

[0029] Figure 9 is a schematic structure diagram of the ear picking unit.

[0030] Figure 10 is Figure 9 the top view of

[0031] Figure 11 is Figure 9 the bottom view of

[0032] Figure 12 is Figure 9 the B-B cross-sectional view of

[0033] Marking description in the figure: Reaping table frame 1, rear baffle 2, overpass shaft 3, arc-shaped bottom plate 4, discharge port 5, material pushing plate 6, protective plate 7, left side cover assembly 8, right side cover assembly 9, chain drive mechanism 10, feeding auger 11, ear picking unit 12, dividing header 13, front bracket 14, base 15, front bottom plate 151, rear bottom plate 152, side guard plate 16, front guard 17, upper tray 18, pin shaft 19, motor base 20, reduction motor 21, spring seat plate 22, tension spring 23, spring hook 24, shock-absorbing plate 25, unit bracket 26, gearbox 27, connecting block 28, V-shaped blade 29, blade mounting disc 30, brush 31, reel chain assembly 32, tension spring 33, sliding plate 34, input shaft 35, sprocket 36, L-shaped clamping plate 37, output shaft 38, bevel gear pair 39, cam 40. Detailed implementation mode

[0034] The present utility model will be further described in detail below in conjunction with embodiments:

[0035] As Figures 1 to 3 shown, a reaping table for harvesting sesame seeds according to the present utility model includes a reaping table frame 1, in which a rotatable feeding auger 11 is installed. An arc-shaped bottom plate 4 is fixed below the feeding auger 11 on the reaping table frame 1. A rear baffle 2 is fixed behind the feeding auger 11 on the reaping table frame 1, and a rectangular discharge port 5 is provided in the middle of the rear baffle 2 and biased to one side. Material pushing plates 6 are evenly distributed along the circumference corresponding to the discharge port on the outer edge of the feeding auger 11, which is used to send the sesame seeds fed by the feeding auger 11 to the material pushing plates 6 into the discharge port 5.

[0036] A plurality of ear picking units 12 are evenly fixed transversely on the cross beam at the front end of the reaping table frame 1. In this embodiment, six ear picking units are taken as an example. A dividing header 13 is installed on the reel chain assembly between two adjacent ear picking units 12. A horizontally arranged overpass shaft 3 is rotatably installed at the rear side of the reaping table frame 1 through bearings. One end of the overpass shaft 3 is respectively connected to the central shaft of the feeding auger 11 and the input shaft of the ear picking unit 12 on one side through two chain drive mechanisms 10 provided on one side of the reaping table frame 1. The input shafts of the plurality of ear picking units 12 are coaxially connected through chain couplings, which is used to drive the feeding auger 11 and the reel chain assemblies of the plurality of ear picking units 12 to rotate simultaneously.

[0037] As Figures 4 to 8As shown, the divider 13 includes a base 15 which is a welded part formed by welding a front base plate 151 and a rear base plate 152 for easy processing. A conical front guard 17 is fixedly welded to the front end of the front base plate of the base 15. The bottom surface of the front guard 17 is supported by bolts through a front bracket 14 at the front ends of the unit brackets of two adjacent ear picking units 12. A upper tray 18 is hinged to the rear end of the rear base plate of the base 15 through a pin shaft 19. Upturned vertical edges are provided on both sides and the front edge of the upper tray 18, and the upper tray 18 rests on the base 15 in the initial state for receiving sesame seeds that fall during the harvesting process. A driving mechanism is provided near the front end on the base 15, and the driving mechanism abuts against the bottom surface of the upper tray 18 for driving the upper tray 18 to swing reciprocally about the pin shaft.

[0038] Preferably, the driving mechanism includes a reduction motor 21 fixed to the front base plate through a motor base 20, and a cam 40 is fixed to the output end of the reduction motor 21. A tension spring 23 is hung between the front end of the upper tray 18 and the base 15, and the upper tray 18 is closely attached to the outer edge of the cam 40 under the action of the tension spring 23. A spring seat plate 22 is fixed to the front end of the motor base 20, and a plurality of hanging holes are evenly distributed on the spring seat plate 22. A spring hook 24 is fixed to the bottom surface of the front end of the upper tray 18, and the tension spring 23 is hung between the spring hook 24 and one of the hanging holes for adjusting the installation angle of the tension spring 23.

[0039] It should be noted that the driving mechanism can also be replaced by other mechanical transmission mechanisms as long as it can drive the upper tray 18 to achieve the reciprocating vibration function.

[0040] The inner bottom surface of the upper tray 18 is in the shape of a slide to facilitate the sesame seeds to slide into the subsequent feeding auger 11. A shock-absorbing plate 25 is provided at the bottom of the upper tray 18 corresponding to the cam 40, and the shock-absorbing plate 25 is made of nylon material to prevent direct contact and wear between the cam 40 and the upper tray 18.

[0041] Side guard plates 16 are symmetrically welded to both sides of the bottom surface of the front part of the upper tray 18, and the side guard plates 16 surround the outer sides of the vertical edges provided on both sides of the front part of the base 15 to prevent crop seeds from falling between the upper tray 18 and the base 15.

[0042] As Figures 9 to 12As shown, the ear picking unit 12 includes a unit bracket 26, a gear box 27 is fixed to the rear end of the unit bracket 26 by bolts, the gear box 27 is fixed and clamped on the crossbeam at the front end of the harvesting table frame 1 by two connecting blocks 28, an input shaft 35 and two output shafts 38 perpendicular to each other are installed in the gear box 27 through bearings, the two output shafts 38 are respectively connected to the input shaft 35 through a bevel gear pair 39 and pass through the top surface of the gear box 27, the input shaft 35 passes through the gear box 27 in the horizontal direction and sprockets 36 are respectively fixed at both ends, two rice-pulling chain assemblies 32 are installed on the unit bracket 26, the two rice-pulling chain assemblies 32 are arranged in an upper and lower staggered manner, the driving wheels of the two rice-pulling chain assemblies 32 are respectively fixed to the upper ends of the two output shafts 38, the driven wheels of the two rice-pulling chain assemblies 32 are respectively slidably installed on the unit bracket 26 through a sliding plate 34, and a tensioning spring 33 is sleeved on the stud arranged between the sliding plate 34 and the unit bracket 26 for tightening the rice-pulling chain;

[0043] A plurality of groups of brushes 31 are evenly fixed on the chains of the two reed chain assemblies 32 through L-shaped clamping plates 37, each group of brushes 31 is fixed on a rubber block and clamped on the L-shaped clamping plate 37 through the rubber block and fixed with screws, and the brushes 31 corresponding to the feeding channels on the two reed chain assemblies 32 overlap in the upper and lower staggered parts to achieve the closure of the feeding channel and reduce the loss of sesame seeds when harvesting;

[0044] A blade mounting plate 30 is installed on the top surface of the gear box 27 and on an output shaft 38 corresponding to the reed chain assembly 32 located above. The blade mounting plate 30 is welded to the driving wheel of the corresponding reed chain assembly 32. V-shaped blades 29 are evenly fixed on the blade mounting plate 30 by bolts to cut off the rhizomes of sesame straw.

[0045] A left cover assembly 8 and a right cover assembly 9 are respectively fixed to the two ends of the harvesting table frame 1 and the outside of the ear picking units 12 on both sides. A protective plate 7 is fixed to the upper rear end of the harvesting table frame 1 through a protective bracket. The protective plate 7 is connected between the rear ends of the left cover assembly 8 and the right cover assembly 9 to reduce the loss of sesame seeds caused by falling during harvesting with the harvesting table.

[0046] During installation, the header is installed at the front end of the harvester, and the other end of the bridge shaft 3 is connected to the power mechanism of the harvester through a chain transmission mechanism.

[0047] When working, the bridge shaft 3 is driven to rotate by the power mechanism of the harvester through the chain transmission mechanism. When the bridge shaft 3 rotates, the two chain transmission mechanisms respectively drive the feeding auger 11 and the input shaft 35 of the ear picking unit 12 located on one side to rotate. Through the chain coupling between the multiple ear picking units 12, the straw chain assemblies 32 of the multiple ear picking units 12 can be driven to rotate towards each other at the same time; as the cutting table moves forward, the sesame and other crop straws are introduced into the feeding channel of each ear picking unit 12 between the two straw chain assemblies 32 through the front shield 17 , the reed chain assembly 32 moves backward, and most of the sesame seeds that fall during the movement fall into the upper tray 18; at the same time, the reduction motor 21 is started and drives the cam 40 to rotate, and with the cooperation of the tension spring 23, the upper tray 18 can be driven to swing back and forth with the pin as the axis; the seeds in the recovery groove can be introduced into the rear feeding auger 11, that is, between the feeding auger 11 and the arc bottom plate 4; a small part of the fallen sesame seeds falls on the brush of the corresponding feeding channel, and is also introduced into the rear feeding auger 11 as the reed chain assembly 32 rotates in the opposite direction;

[0048] When the sesame straw is sent to the rear end of the feeding channel by the reed chain assembly 32, the blade 29 is driven to rotate by the blade mounting plate 30 installed on one of the driving wheels of the reed chain assembly, so that the rhizome of the sesame straw can be cut off; the cut sesame straw falls into the feeding auger 11; through the rotation of the feeding auger 11, the fallen sesame straw and sesame grains can be sent to the material-diverting plate 6, and through the rotation of the material-diverting plate 6, the sesame straw and sesame grains sent to the material-diverting plate 6 are sent to the discharge port 5 and recovered into the granary through the recovery channel, thereby realizing the return of the grains to the granary; reducing the harvesting loss, thereby improving the economic benefit.

[0049] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A sesame harvesting header, comprising a header frame, a rotatable feeding auger is installed in the header frame, a plurality of ear picking units are evenly fixed on the crossbeam at the front end of the header frame, a grain divider is provided on the grain chain assembly between two adjacent ear picking units, a bridge shaft is rotatably installed on the rear side of the header frame, and the bridge shaft is connected to the central shaft of the feeding auger and the input shaft of the ear picking unit through a transmission mechanism provided on one side of the header frame, wherein: The crop divider comprises a base, a front shield is fixed at the front end of the base, an upper tray is hinged at the rear end of the base through a pin shaft, vertical edges are provided at both sides and the front edge of the upper tray, and the upper tray falls on the base in an initial state, and is used to receive sesame seeds dropped during the harvesting process; A driving mechanism is provided on the base near the front end, and the driving mechanism abuts against the bottom surface of the upper tray and is used to drive the upper tray to swing back and forth with the pin shaft as the axis.

2. A header for harvesting sesame according to claim 1, characterized in that: The inner bottom surface of the upper tray is in a slide shape, so that the sesame seeds can slide into the feeding auger at the rear.

3. The header for harvesting sesame according to claim 1, characterized in that: The driving mechanism comprises a reduction motor fixed on the base through a motor seat, and a cam is fixed on the output end of the reduction motor.

4. A header for harvesting sesame according to claim 3, characterized in that: A tension spring is arranged between the front end of the upper tray and the base, and the upper tray is tightly attached to the outer edge of the cam under the action of the tension spring.

5. The header for harvesting sesame according to claim 3, characterized in that: A shock-absorbing plate is provided at the bottom of the upper tray corresponding to the cam, and the shock-absorbing plate is made of nylon to prevent the cam and the upper tray from direct contact and wear.

6. A header for harvesting sesame according to any one of claims 1 to 5, characterized in that: Side guard plates are symmetrically fixed on both sides of the bottom surface of the front part of the upper tray, and the side guard plates surround the outer sides of the vertical edges arranged on both sides of the front part of the base to prevent crop grains from falling between the upper tray and the base.

7. A header for harvesting sesame according to claim 6, characterized in that: The base is a welded part formed by welding a front bottom plate and a rear bottom plate, so as to facilitate processing.

8. A sesame harvesting header according to claim 1 or 7, characterized in that: Brushes are evenly distributed and fixed on the two rice-pulling chain assemblies of each ear-picking unit, and the brushes corresponding to the feeding channels on the two rice-pulling chain assemblies overlap in upper and lower offset parts to achieve the closure of the feeding channel and reduce the loss of grains during sesame harvesting.

9. A sesame harvesting header according to claim 8, characterized in that: A blade mounting disc is installed on an output shaft on the top surface of a gear box at the rear end of each ear picking unit. Blades are evenly distributed and fixed on the blade mounting disc to cut off the rhizomes of sesame straws.

10. A sesame harvesting header according to claim 1 or 9, characterized in that: A left cover assembly and a right cover assembly are respectively fixed at both ends of the harvesting table frame and on the outside of the ear picking units on both sides. A protective plate is provided at the upper rear end of the harvesting table frame, and the protective plate is connected between the rear ends of the left cover assembly and the right cover assembly to reduce the loss of sesame seeds falling during harvesting with the harvesting table.

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