Grain harvesting header transmission device and transmission method thereof

Abstract

The invention relates to a grain harvesting header transmission device and a transmission method thereof, and belongs to the technical field of agricultural machinery. According to the technical scheme, the two ends of a seventh bevel gear are connected with a transfer case main shaft, power is transmitted to transfer cases on the left side and the right side of a transmission case, and the transfer cases on the left side and the right side drive an ear picking device to conduct ear picking operation; the fifth bevel gear is connected with the left end of a first transmission shaft, the right end of the first transmission shaft is connected with the left end of a second transmission shaft through a coupler, the right end of the second transmission shaft is connected with a driving chain wheel, the driving chain wheel is meshed with an auger chain wheel through a chain, and the auger chain wheel is connected with a right auger to drive the auger to work. The left transmission mechanism drives the left packing auger to work, and the left packing auger and the right packing auger drive the middle packing auger to work at the same time. The left transmission mechanism and the right transmission mechanism are symmetrically arranged on the two sides of the axis of the header rack, power is efficiently transmitted to the header transfer case and the augers on the two sides for harvesting operation through centralized transmission, and operation safety and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a grain harvesting header transmission device and its transmission method, belonging to the technical field of agricultural machinery. BACKGROUND

[0002] Grain harvesting machinery refers to the general term for machinery used for harvesting the grains and straw of crops such as rice and wheat. It is used to cut down the stalks of crops such as rice and wheat and lay them on the field. According to the type of the header, it is divided into horizontal and vertical types. The vertical header harvester stands the cut crops upright on the cutter plane and lays them into strips outside the machine by the conveyor, with the advantages of compact structure, lightness, flexibility, good maneuverability, and suitability for small plots of land. As the core equipment for the mechanized harvesting of grains, the performance of the grain harvesting header directly affects the harvesting efficiency, straw processing quality, and equipment reliability. In the overall structure of the header, the transmission device is responsible for transmitting power to the key actuators such as the header, stem pulling, conveying, and chopping, and is an important guarantee for the realization of the functions of the whole machine. The rapid development of grain cultivation on a large scale has put forward higher requirements for the width and convenience of the header of the harvesting machine. The use of folding headers can increase the degree of the header while increasing convenience, such as Chinese patent application CN 202122092557.0 entitled "Folding Silage Header Frame, Folding Silage Header, and Harvester" and Chinese patent application CN 202022228285.8 entitled "Quick-release foldable header", etc. The header and auger adopt a two- or three-section folding method. However, the existing grain harvesting header is usually driven by a single power device to transmit power to both sides of the header for operation, which is difficult to meet the requirements of the folding header, has low safety and efficiency, high failure rate, is difficult to maintain, and has high cost. SUMMARY

[0003] The purpose of the present application is to provide a grain harvesting header transmission device and its transmission method, with two sets of transmission mechanisms symmetrically arranged on both sides of the header frame axis, which can efficiently transmit power to the header transfer case and the two side augers for harvesting operation, thereby improving the safety and efficiency of operation, improving the reliability and maintenance convenience of the equipment, reducing the overall cost, and solving the above technical problems existing in the prior art.

[0004] The technical solution of the present application is: The application discloses a grain harvesting header transmission device, which comprises a middle auger, a left auger and a right auger arranged on a header frame, the two ends of the middle auger are connected with the transmission shafts of the left auger and the right auger respectively, and the middle auger is foldable with the left auger and the right auger; left and right transmission mechanisms are symmetrically arranged on both sides of the axis of the header frame, the left and right transmission mechanisms are symmetrically identical in structure, and are respectively arranged on the header frame close to the left auger and the right auger at the two ends of the middle auger; the right transmission mechanism comprises a gear box, a cross shaft, a gearbox and a transmission box; the gear box transmits power to the gearbox through the cross shaft, the outer spline of the input shaft two at the upper end of the cross shaft is connected with the driven bevel gear one of the gear box in a meshing mode, and the lower end of the cross shaft is connected with the outer spline of the input shaft three of the gearbox in a meshing mode; the driven bevel gear two in the gearbox is meshed with the driving bevel gear two, the input shaft three is connected with the driven bevel gear two, the driving bevel gear two is connected with the output shaft, and the output shaft transmits power to the transmission box; the input shaft four of the transmission box is connected with the output shaft of the gearbox, the helical gear one and the helical gear two of the transmission box are connected with the outer spline of the input shaft four in a meshing mode, the helical gear one is connected with the helical gear three in a meshing mode, the helical gear two is connected with the helical gear four in a meshing mode, and the helical gear three and the helical gear four are connected with the intermediate shaft; the helical gear five is connected with the helical gear six in a meshing mode, the helical gear six is connected with the helical gear seven in a meshing mode, and the two ends of the helical gear seven are connected with the main shaft of the transfer box to transmit power to the transfer boxes on the left and right sides of the transmission box, so that the header picking device is driven to perform the header picking operation; the helical gear five is connected with the left end of the first transmission shaft, the right end of the first transmission shaft is connected with the left end of the second transmission shaft through a coupling, the right end of the second transmission shaft is connected with the driving sprocket, the driving sprocket is meshed with the auger sprocket through a chain, the auger sprocket is connected with the right auger to drive the auger to work, and the left transmission mechanism drives the left auger to work, the left auger and the right auger simultaneously drive the middle auger to work.

[0005] Further, the right end of the first transmission shaft is connected with one end of a coupling through a self-aligning roller bearing two and a coupling spring, the other end of the coupling is connected with the left end of the second transmission shaft, the coupling is a tooth coupling, and the first transmission shaft and the second transmission shaft form a foldable structure, so that the auger can be folded simultaneously, and power can be transmitted when the header is flattened.

[0006] Further, the bottom of the gear box is connected with a bottom plate through bolts, the bottom plate is fixed on a gear box cross beam, and the gear box cross beam is fixedly connected with the header frame.

[0007] Further, the clutch is arranged between the bevel gear one and the bevel gear two, the input shaft four is provided with a fork plate, the fork plate is connected with a fork guide sleeve, the fork plate slides along the input shaft four under the action of the fork guide sleeve and is matched with the clutch, the fork plate drives the clutch to contact and rotate with the bevel gear one or the bevel gear two. The fork plate is used for controlling the clutch, so that the header changes the transmission ratio of the bevel gear one and the bevel gear two in the working process, realizes speed change, selects high speed or low speed according to the harvesting actual situation, and then outputs power to the transfer case.

[0008] A grain harvesting header transmission method uses the transmission device, when working, the left and right transmission mechanisms work simultaneously, power is transmitted to the gear box through the input shaft one, the gear box is transmitted to the transmission box and the transmission box through the cross shaft, then the transmission box drives the transfer case to work, at the same time, the transmission box drives the auger sprocket to rotate through the second transmission shaft, so as to drive the auger to rotate, and the header works.

[0009] The positive effect of the present application is that the left and right transmission mechanisms are symmetrically arranged on both sides of the header frame axis, power is efficiently transmitted to the header transfer case and the two sides of the auger for harvesting work through centralized transmission, the working safety and efficiency are improved, the equipment reliability and maintenance convenience are improved, and the comprehensive cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a rear view of the overall structure of the embodiment of the present application; Figure 2 It is a main view of the right side transmission device structure of the embodiment of the present application; Figure 3 It is a main view of the internal structure of the embodiment of the present application; Figure 4 It is an embodiment of the present application Figure 3 It is an enlarged structure schematic view of A in the embodiment of the present application; Figure 5 It is an enlarged structure schematic view of B in the embodiment of the present application; Figure 2 Figure 6 It is a coupling structure schematic view of the embodiment of the present application; ​In the figure: 1 - cutting platform frame, 2 - gearbox base, 3 - gearbox crossbeam, 4 - gearbox, 5 - cross shaft, 6 - transmission box, 7 - drive box, 8 - transfer case, 9 - self-aligning roller bearing one, 10 - driving bevel gear one, 11 - input shaft one, 12 - driven bevel gear one, 13 - input shaft two, 14 - input shaft three, 15 - driven bevel gear two, 16 - driving bevel gear two, 17 - output shaft, 18 - tapered roller bearing, 19 - helical gear one, 20 - helical gear two, 21 - input shaft four, 22 - shift fork guide sleeve, 23 - shift fork plate, 24 - clutch, 25 - helical gear three, 26 - helical gear four, 27 - intermediate shaft, 28 - helical gear five, 29 - helical gear six, 30 - helical gear seven, 31 - transfer case main shaft, 32 - first transmission shaft, 33 - second transmission shaft, 34 - self-aligning roller bearing two, 35 - coupling spring, 36 - coupling, 37 - auger sprocket, 38 - auger sprocket, 40 - intermediate auger, 41 - left auger, 42 - right auger. DETAILED DESCRIPTION

[0011] The application will be further described by examples in connection with the drawings.

[0012] Referring to the drawings Figures 1-6The utility model provides a grain harvesting header transmission device, containing the intermediate auger 40, left auger 41 and right auger 42 of setting on the header frame 1, the transmission shaft of both ends of intermediate auger 40 is connected with the transmission shaft of left auger 41 and right auger 42 respectively, and the intermediate auger 40 is foldable between left auger 41 and right auger 42, the left and right transmission mechanism is symmetrically arranged on the both sides of the axis of header frame 1, the structure of left and right transmission mechanism is symmetrical and same, is arranged on the header frame 1 of the both ends of intermediate auger 40 close to left auger 41 and right auger 42 respectively, the right transmission mechanism contains gear box 4, cross shaft 5, gearbox 6 and transmission box 7, gear box 4 passes through cross shaft 5 and is connected with gearbox 6, the outer spline of input shaft two 13 of cross shaft 5 upper end is connected with gear box driven bevel gear one 12, and the outer spline of cross shaft 5 lower end is connected with the input shaft three 14 of gearbox, driven bevel gear two 15 in gearbox 6 is mutually engaged with driving bevel gear two 16, the input shaft three 14 is connected with driven bevel gear two 15, driving bevel gear two 16 is connected with output shaft 17, and power is transmitted to transmission box 7 through output shaft 17, the input shaft four 21 of transmission box 7 is connected with the output shaft 17 of gearbox 6, and the helical gear one 19 of transmission box 7 is connected with the helical gear two 20 through the outer spline of input shaft four 21, and the conical roller bearing 18 is arranged on input shaft four 21, the helical gear one 19 is connected with the helical gear three 25, the helical gear two 20 is connected with the helical gear four 26, and the helical gear three 25 and the helical gear four 26 are connected through intermediate shaft 27, the helical gear five 28 is connected with the helical gear six 29, the helical gear six 29 is connected with the helical gear seven 30, and the both ends of helical gear seven 30 are connected with the main shaft 31 of distribution box, and power is transmitted to the distribution box 8 of the left and right sides of transmission box 7, and the distribution box 8 of the left and right sides drives the ear picking device to carry out ear picking operation, the left end of helical gear five 28 is connected with the first transmission shaft 32, the right end of first transmission shaft 32 is connected with the left end of second transmission shaft 33 through coupling 36, the middle part of second transmission shaft 33 is equipped with the aligning roller bearing one 9, the right end of second transmission shaft 33 is connected with driving sprocket 37, driving sprocket 37 is engaged with auger sprocket 38 through chain 39, and auger sprocket 38 is connected with right auger 42, drives auger 42 to work, the left transmission mechanism drives left auger 41 to work, and left auger 41 and right auger 42 drive intermediate auger 40 to work simultaneously.

[0013] Refer to the attached drawings Figure 5 The right end of first transmission shaft 32 is connected with one end of coupling 36 through aligning roller bearing two 34 and coupling spring 35, the other end of coupling 36 is connected with the left end of second transmission shaft 33, the coupling 36 is a tooth coupling, and the first transmission shaft 32 and the second transmission shaft 33 constitute a foldable structure, which is convenient to fold with the auger simultaneously, and can transmit power when the header is flattened.

[0014] Preferably, the coupling 36 is a drum coupling.

[0015] The tooth coupling is used to realize the transmission of torque and rotational motion between two half couplings by using inner and outer tooth engagement, and is suitable for driving shaft system for connecting two concentric shafts, and has the performance of compensating the relative displacement between the two shafts, which is a commonly known mechanism in the art.

[0016] Referring to the drawings Figure 2 The bottom of the gear box 4 is connected to the bottom plate 2 by bolts, and the bottom plate 2 is fixed on the gear box cross beam 3, and the gear box cross beam 3 is fixedly connected with the header frame 1.

[0017] Referring to the drawings Figure 4 The clutch 24 is arranged between the helical gear one 19 or the helical gear two 20, the input shaft four 21 is provided with a yoke plate 23, the yoke plate 23 is connected with the yoke guide sleeve 22, and the yoke plate 23 slides along the input shaft four 21 under the action of the yoke guide sleeve 22 and matches the clutch 24, and the yoke plate 23 drives the clutch 24 to contact and rotate with the helical gear one 19 or the helical gear two 20. The yoke plate 23 is used to control the clutch 24, so that the transmission ratio of the helical gear one 19 and the helical gear two 20 is changed during the operation of the header, the speed is changed, the high and low speed is selected according to the actual harvesting situation, and then the power is output to the transfer case 8.

[0018] A grain harvesting header transmission method using the above transmission device, when working, the left and right transmission mechanisms work at the same time, the power is transmitted to the gear box 4 through the input shaft one 11, the gear box 4 transmits the power to the transmission box 7 through the cross shaft 5 and the transmission box 7, then the transmission box 7 drives the transfer case 8 to work, at the same time, the transmission box 7 drives the auger sprocket 38 to rotate through the second transmission shaft 33, so as to drive the auger to rotate, and the header works.

[0019] The gear box of the left and right transmission mechanisms is the input end of the total power, and is symmetrically arranged on the middle auger of the header, the power is transmitted to the transmission box through the cross shaft 5, and the transmission box 7 transmits the power to the transfer case 8 and the second transmission shaft 33 to drive the auger to rotate through chain transmission.

[0020] The left and right transmission mechanisms are shown in the unfolded state in the drawings Figure 5 The connection between the first transmission shaft 32 and the second transmission shaft 33 is shown in the drawings, and the unfolded state is shown. The transmission shafts connected with the left auger 41 and the right auger 42 at the two ends of the middle auger 40 also adopt the above foldable structure, so that the auger can be unfolded or folded, and the power can be transmitted after being unfolded. The folding positions of the middle auger 40, the left auger 41 and the right auger 42 correspond to the folding positions between the first transmission shaft 32 and the second transmission shaft 33 of the left and right transmission mechanisms, so that the header can be folded conveniently.

[0021] The power is output to the split gearbox by the power transmission box, and the power is transmitted axially and bilaterally. The power is transmitted by the coupling when the header is flattened, so that the power transmission efficiency is more efficient, and the power loss is greatly reduced. Moreover, the transmission structure is more simple, convenient to transport, saves manufacturing cost, and greatly shortens the maintenance time.

Claims

1. A grain harvester header drive apparatus, characterized by: The invention discloses a corn header, which comprises a middle auger (40), a left auger (41) and a right auger (42) arranged on a header frame (1), two end transmission shafts of the middle auger (40) are connected with transmission shafts of the left auger (41) and the right auger (42) respectively, and the middle auger (40) is foldable with the left auger (41) and the right auger (42); the header frame (1) is symmetrically arranged with left and right transmission mechanisms on both sides of the axis, the left and right transmission mechanisms are symmetrically identical in structure, and are arranged on the header frame (1) near the left auger (41) and the right auger (42) at two ends of the middle auger (40) respectively; the right transmission mechanism comprises a gear box (4), a cross shaft (5), a gearbox (6) and a transmission box (7); the gear box (4) transmits power to the gearbox (6) through the cross shaft (5), an input shaft two (13) on the upper end of the cross shaft (5) is connected in mesh with a driven bevel gear one (12) of the gear box, and a lower end of the cross shaft (5) is connected in mesh with an outer spline of an input shaft three (14) of the gearbox (6); a driven bevel gear two (15) in the gearbox (6) is meshed with a driving bevel gear two (16), the input shaft three (14) is connected with the driven bevel gear two (15), the driving bevel gear two (16) is connected with an output shaft (17), and the output shaft (17) transmits power to the transmission box (7); the input shaft four (21) of the transmission box (7) is connected with the output shaft (17) of the gearbox (6), the helical gear one (19) and the helical gear two (20) of the transmission box (7) are connected in mesh through the outer spline of the input shaft four (21), the helical gear one (19) is connected in mesh with the helical gear three (25), the helical gear two (20) is connected in mesh with the helical gear four (26), the helical gear three (25) and the helical gear four (26) are connected through a middle shaft (27), the helical gear five (28) is connected in mesh with the helical gear six (29), the helical gear six (29) is connected in mesh with the helical gear seven (30), and the two ends of the helical gear seven (30) are connected with a main shaft (31) of a transfer box, so as to transmit power to the transfer boxes (8) on both sides of the transmission box (7), and the transfer boxes (8) on both sides drive the ear picking device to carry out ear picking operation; the helical gear five (28) is connected with the left end of a first transmission shaft (32), the right end of the first transmission shaft (32) is connected with the left end of a second transmission shaft (33) through a coupling (36), the right end of the second transmission shaft (33) is connected with a driving sprocket (37), the driving sprocket (37) is meshed with an auger sprocket (38) through a chain, the auger sprocket (38) is connected with the right auger (42), and the right auger (42) is driven to work; the left transmission mechanism drives the left auger (41) to work, and the left auger (41) and the right auger (42) drive the middle auger (40) to work simultaneously.

2. A grain harvester header drive and method of driving thereof according to claim 1 wherein: The right end of the first transmission shaft (32) is connected with one end of a coupling (36) through a second self-aligning roller bearing (34) and a coupling spring (35), the other end of the coupling (36) is connected with the left end of a second transmission shaft (33), the coupling (36) is a gear coupling, and a foldable structure is formed between the first transmission shaft (32) and the second transmission shaft (33).

3. A grain harvester header drive and method of driving thereof according to claim 1 or 2 wherein: The bottom of the gear box (4) is connected with the bottom plate (2) through bolts, the bottom plate (2) is fixed on the gear box cross beam (3), and the gear box cross beam (3) is fixedly connected with the header frame (1).

4. A grain harvester header drive and method of driving thereof according to claim 3 wherein: The bevel gear one (19) or the bevel gear two (20) is provided with a clutch (24), the input shaft four (21) is provided with a fork plate (23), the fork plate (23) is connected with a fork guide sleeve (22), the fork plate (23) slides along the input shaft four (21) and matches the clutch (24) under the action of the fork guide sleeve (22), the fork plate (23) drives the clutch (24) to rotate in contact with the bevel gear one (19) or the bevel gear two (20).

5. A method of driving a grain harvester header drive as claimed in any one of claims 1 to 4, characterised in that: When working, the transmission mechanisms on the left and right sides work simultaneously, power is transmitted to the gear box (4) through the input shaft one (11), the gear box (4) transmits power to the transmission box (7) and the gearbox (6) through the cross shaft (5), then the transmission box (7) drives the transfer box (8) to work, at the same time, the transmission box (7) drives the auger sprocket (38) to rotate through the second transmission shaft (33), so as to drive the auger to rotate, and the header works.

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