A corn harvester header transmission mechanism

Abstract

The utility model discloses a corn harvester header transmission mechanism, including a frame on which a hydraulic motor is installed, a transmission sprocket, an auger sprocket and a power transmission sprocket are rotatably connected on one side wall of the frame, and a transmission chain is connected to the transmission sprocket, the auger sprocket and the power transmission sprocket through an external common chain transmission. The utility model organically combines two groups of chain transmission mechanisms, and under the drive of a single hydraulic motor and the action of a steering part, the two groups of chain transmission mechanisms operate synchronously, and the auger drum and the straw-pulling mechanism work synchronously, forming an effect that one hydraulic motor drives multiple ear-picking box shafts to rotate, which is beneficial to the harvesting operation of the corn header, adopts a single-side transmission connection mode, reduces transmission components, has a simple structure, reduces power loss during the transmission process, and has a more sensitive response between structures, better protects the transmission system, greatly reduces manufacturing and maintenance costs, and significantly improves safety and stability, which is convenient for promotion in the transmission technology of corn headers.

Description

Technical Field

[0001] The utility model relates to the technical field of corn harvester transmission, in particular to a cutting table transmission mechanism for a corn harvester. Background Art

[0002] Corn harvesting header is an agricultural machine for picking and collecting corn ears. It uses the middle shield combination at the front end of the header to separate the corn stalks, so that the corn stalks enter the ear picking device in a certain order for mechanized corn harvesting. Due to regional differences, the row spacing of corn planting varies greatly, and customers will put forward various requirements for corn headers according to the corn varieties they grow.

[0003] With the continuous development of agricultural technology, the technical requirements for corn harvesting machinery are also getting higher. Among them, the quality of the header transmission is directly related to the yield and quality of corn harvesting. The existing corn header transmission method generally installs a drive pulley on the header frame to form a main input assembly. The pulley distributes the power to the sprockets on both sides through the transmission chain, and finally transmits the power to the reed chain and the auger drum. This method is generally called bilateral transmission. Due to the complex structure of the bilateral transmission method and the large number of transmission components, there is a problem of large power loss; due to the complexity of the bilateral transmission structure, the weight of the left and right transmission mechanisms has also increased a lot, and at the same time, the weight of the entire header has increased. When the whole machine is running, the inertia is also large, which may cause the header to shake and affect the stability of the fuselage; and the manufacturing and maintenance costs of the bilateral transmission structure are also high, which brings great inconvenience to use.

[0004] Therefore, it is necessary to invent a cutting table transmission mechanism for a corn harvester to achieve a transmission mode with simple structure and high transmission efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to address the deficiencies of the above-mentioned prior art and to provide a cutting table transmission mechanism for a corn harvester. A chain transmission mechanism is formed by arranging a transmission sprocket, an auger sprocket, a power transmission sprocket, a first tensioning part and a transmission chain on one side of the cutting table frame. A plurality of straw driving wheels and straw driven wheels form a chain transmission mechanism through a straw chain and a tensioning wheel. Under the action of the steering part, the power of the transmission sprocket can be transmitted through the first transmission shaft and the second transmission shaft to achieve synchronization of the two chain transmission mechanisms. Under the drive of a single hydraulic motor, the auger drum and the straw mechanism work synchronously, forming an effect in which one hydraulic motor drives a plurality of ear picking box shafts to rotate.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A corn harvester header transmission mechanism comprises a frame on which a hydraulic motor is mounted, a transmission sprocket, an auger sprocket and a power transmission sprocket are rotatably connected to one side wall of the frame, and a transmission chain is connected to the transmission sprocket, the auger sprocket and the power transmission sprocket through an external common chain drive;

[0008] The frame is also provided with a first tensioning part on the outside, which is used to keep the transmission chain in a tensioned state and to enable the transmission chain to be driven during operation. The first tensioning part includes two rotating pressing wheels, which are respectively pressed on the inner and outer sides of the transmission chain and are connected to the transmission chain in a chain transmission manner.

[0009] An ear picking box is installed on the inner side of the frame, and a first transmission shaft and a plurality of evenly distributed second transmission shafts are rotatably connected inside the ear picking box. The first transmission shaft causes the plurality of second transmission shafts to rotate synchronously through a steering portion, and a plurality of evenly distributed rice-pulling driving wheels are fixedly connected to the second transmission shaft. A plurality of evenly distributed rice-pulling driven wheels and two tensioning wheels are also rotatably connected inside the ear picking box. The plurality of rice-pulling driving wheels and the rice-pulling driven wheels form a chain transmission mechanism through a rice-pulling chain and a tensioning wheel.

[0010] Preferably, the first tensioning portion further comprises a support frame, and a middle portion of the support frame is rotatably connected to the frame, two rotatable pressure wheels are rotatably connected to two ends of the support frame, and a tensioning spring is connected between the support frame and the frame.

[0011] Preferably, the reel chain is arranged in a serpentine shape around a plurality of reel driving wheels, reel driven wheels and a tensioning wheel, and two ends of the reel chain are connected to form a closed loop.

[0012] Preferably, torsion plates are hinged on both sides of one end of the ear picking box, the tensioning wheel is rotatably connected to the other end of the torsion plate, and a torsion spring is provided at the hinge between the torsion plate and the ear picking box, so that the straw chain always remains in a tensioned state and can be transmitted during operation.

[0013] Preferably, the steering part is configured as a steering gear, the plurality of second transmission shafts are vertically distributed to the first transmission shaft, and the first transmission shaft synchronously transmits the plurality of second transmission shafts via the plurality of steering gears.

[0014] Preferably, an auger drum is rotatably connected inside the frame, and the auger drum is coaxially distributed with the auger sprocket and transmission-connected.

[0015] Preferably, the output shaft of the hydraulic motor is drivingly connected to the driving sprocket, a fixing seat is fixedly connected to the frame, and the hydraulic motor is placed flat and fixed on the fixing seat.

[0016] Preferably, the transmission sprocket and the auger sprocket are located on both sides of the power transmission sprocket, and the axes of the transmission sprocket, the auger sprocket and the power transmission sprocket are arranged in a colinear manner.

[0017] Preferably, the diameter of the auger sprocket is larger than the diameters of the drive sprocket and the auger sprocket.

[0018] The utility model has the following beneficial effects:

[0019] A chain transmission mechanism is formed by arranging a transmission sprocket, an auger sprocket, a power transmission sprocket, a first tensioning part and a transmission chain on one side of the harvesting platform frame; a plurality of grain-moving active wheels and grain-moving driven wheels form a chain transmission mechanism through a grain-moving chain and a tensioning wheel; under the action of the steering part, the power of the transmission sprocket can be synchronized with the first transmission shaft and the second transmission shaft to realize the synchronization of the two chain transmission mechanisms; under the drive of a single hydraulic motor, the auger drum and the grain-moving mechanism work synchronously, forming an effect in which a hydraulic motor drives a plurality of ear-moving box shafts to rotate, which is beneficial to the harvesting operation of the corn harvesting platform; a single-sided transmission connection method is adopted, which reduces the transmission components, has a simple structure, reduces the power loss in the transmission process, and has a more sensitive response between structures, better protects the transmission system, greatly reduces the manufacturing and maintenance costs, and significantly improves the safety and stability, which is convenient for promotion in the transmission technology of the corn harvesting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A right side view of a cutting table transmission mechanism for a corn harvester provided by the utility model;

[0021] Figure 2 A top view of a cutting table transmission mechanism for a corn harvester provided by the utility model;

[0022] Figure 3 A bottom view of a cutting table transmission mechanism for a corn harvester provided by the utility model;

[0023] Figure 4 A front view of a cutting table transmission mechanism for a corn harvester provided by the utility model;

[0024] Figure 5 The utility model is a rear view of the cutting table transmission mechanism for the corn harvester.

[0025] Among them are:

[0026] Frame; 2. Fixed seat; 3. Transmission sprocket; 4. Transmission chain; 5. First tensioning part; 6. Auger drum; 7. Auger sprocket; 8. Power transmission sprocket; 9. Ear picking box; 10. Reed-pulling driving wheel; 11. Reed-pulling driven wheel; 12. Reed-pulling chain; 13. Tensioning wheel; 14. Steering part; 15. First transmission shaft; 16. Second transmission shaft; 17. Torsion plate; 18. Hydraulic motor;

[0027] 501, rotating the pressure wheel; 502, supporting frame; 503, tightening the spring. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0029] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0030] like Figure 1-5 As shown, a corn harvester header transmission mechanism includes a frame 1 on which a hydraulic motor 18 is installed, a transmission sprocket 3, an auger sprocket 7 and a power transmission sprocket 8 are rotatably connected to a side wall of the frame 1, and a transmission chain 4 is connected to the external common chain drive of the transmission sprocket 3, the auger sprocket 7 and the power transmission sprocket 8;

[0031] The transmission sprocket 3, the auger sprocket 7 and the power transmission sprocket 8 are all made of 45 steel through quenching and tempering treatment, and the hardness reaches 217HBW-255HBW, and the sprocket teeth of the transmission sprocket 3, the auger sprocket 7 and the power transmission sprocket 8 are surface quenched, and the surface hardness reaches 45HRC-55HRC, which improves their stress strength, reduces processing difficulty, and improves machining efficiency;

[0032] A first tensioning part 5 is also provided on the outer side of the frame 1, which is used to keep the transmission chain 4 in a tensioned state and to be able to be driven when working. The first tensioning part 5 includes two rotating pressure wheels 501, which are respectively pressed on the inner and outer sides of the transmission chain 4 and are connected to the transmission chain 4 by chain transmission; the power transmission is simple and direct, which reduces the loss and speeds up the response time. At the same time, the hydraulic motor 18 is easy to control, and the precise control of the cutting table transmission can be realized;

[0033] The hydraulic motor 18 drives the chain transmission mechanism to directly control the speed of the auger drum 6 and the reed chain 12, thereby achieving precise control, accelerating the response time, and improving the transmission efficiency;

[0034] An ear picking box 9 is installed on the inner side of the frame 1, and a first transmission shaft 15 and a plurality of evenly distributed second transmission shafts 16 are rotatably connected in the ear picking box 9. The first transmission shaft 15 causes the plurality of second transmission shafts 16 to rotate synchronously through a steering portion 14. A power transmission sprocket 8 is fixed to the end of the first transmission shaft 15. The power transmission sprocket 8 is fixed to the end of the first transmission shaft 15. A plurality of evenly distributed reed-moving driving wheels 10 are fixedly connected to the second transmission shaft 16. A plurality of evenly distributed reed-moving driven wheels 11 and two tensioning wheels 13 are also rotatably connected in the ear picking box 9. The plurality of reed-moving driving wheels 10 and the reed-moving driven wheels 11 form a chain transmission mechanism through a reed-moving chain 12 and a tensioning wheel 13.

[0035] The rotating pressure wheel 501, the reel driving wheel 10, the reel driven wheel 11, the tension wheel 13 and the steering part 14 are all made of 45 steel after forging and normalizing, with a hardness of 167HBW-299HBW, and the chain tooth surface is quenched with a surface hardness of 45HRC-55HRC, which improves its strength and hardness and increases its service life.

[0036] Specifically, the first tensioning portion 5 also includes a support frame 502 , and the middle portion of the support frame 502 is rotatably connected to the frame 1 , two rotating pressure wheels 501 are rotatably connected to both ends of the support frame 502 , and a tensioning spring 503 is connected between the support frame 502 and the frame 1 .

[0037] Specifically, the reel chain 12 is arranged in a serpentine shape around a plurality of reel driving wheels 10 , a reel driven wheel 11 and a tension wheel 13 , and two ends of the reel chain 12 are connected to form a closed loop.

[0038] Specifically, torsion plates 17 are hinged on both sides of one end of the ear picking box 9, the tensioning wheel 13 is rotatably connected to the other end of the torsion plate 17, and a torsion spring is provided at the hinge between the torsion plate 17 and the ear picking box 9, so that the straw chain 12 always remains in a tensioned state and can be transmitted during operation.

[0039] Specifically, the steering portion 14 is configured as a steering gear, the plurality of second transmission shafts 16 are vertically distributed with respect to the first transmission shaft 15, and the first transmission shaft 15 synchronously transmits the plurality of second transmission shafts 16 via the plurality of steering gears.

[0040] Specifically, an auger drum 6 is rotatably connected inside the frame 1, and the auger drum 6 is coaxially distributed with the auger sprocket 7 and is transmission-connected.

[0041] Specifically, the output shaft of the hydraulic motor 18 is connected to the transmission sprocket 3, and a fixed seat 2 is fixedly connected to the frame 1, and the hydraulic motor 18 is placed flat and fixed on the fixed seat 2. The fixed seat 2 is made of Q355B material by laser cutting, has strong supporting strength, and utilizes a single-sided power transmission mechanism, which reasonably utilizes the space of the frame 1, fully considers the layout factors, reduces the weight of the cutting table, and further reduces the manufacturing cost of the cutting table.

[0042] Specifically, the transmission sprocket 3 and the auger sprocket 7 are located on both sides of the power transmission sprocket 8, and the axes of the transmission sprocket 3, the auger sprocket 7 and the power transmission sprocket 8 are arranged in a colinear manner.

[0043] Specifically, the diameter of the auger sprocket 7 is larger than the diameters of the transmission sprocket 3 and the auger sprocket 7 .

[0044] Working principle:

[0045] The transmission chain 4 is sleeved on the outside of the transmission sprocket 3, the auger sprocket 7 and the power transmission sprocket 8, and with the cooperation of the two rotating pressure wheels 501, the support frame 502 and the tensioning spring 503 distribution structure, the transmission chain 4 always keeps a tensioned state, and under the drive of the output shaft of the hydraulic motor 18, the auger drum 6 can rotate to perform the discharge operation. At the same time, the transmission sprocket 8 effectively transmits the first transmission shaft 15, and the first transmission shaft 15 synchronously transmits multiple second transmission shafts 16 through multiple steering gears. Multiple rice-moving active wheels 10 and rice-moving driven wheels 11 inside the ear-picking box 9 form a chain transmission mechanism through the rice-moving chain 12 and the tensioning wheel 13. The rice-moving mechanism is driven to work under the rotation of the second transmission shaft 16, and can be used for ear-picking operations.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A corn harvester header transmission mechanism, comprising a frame (1) on which a hydraulic motor (18) is mounted, characterized in that: A drive sprocket (3), an auger sprocket (7) and a power transmission sprocket (8) are rotatably connected to a side wall of the frame (1); a drive chain (4) is connected to the external common chain drive of the drive sprocket (3), the auger sprocket (7) and the power transmission sprocket (8); The frame (1) is also provided with a first tensioning portion (5) on the outside thereof, which is used to keep the transmission chain (4) in a tensioned state and capable of being driven when the transmission chain (4) is in operation. The first tensioning portion (5) comprises two rotating pressing wheels (501), which are respectively pressed on the inner and outer sides of the transmission chain (4) and are connected to the transmission chain (4) in a chain transmission manner. An ear picking box (9) is installed on the inner side of the frame (1). A first transmission shaft (15) and a plurality of evenly distributed second transmission shafts (16) are rotatably connected inside the ear picking box (9). The first transmission shaft (15) causes the plurality of second transmission shafts (16) to rotate synchronously via a steering portion (14). A power transmission sprocket (8) is fixed to the end of the first transmission shaft (15). A plurality of evenly distributed reed-moving driving wheels (10) are fixedly connected to the second transmission shaft (16). A plurality of evenly distributed reed-moving driven wheels (11) and two tensioning wheels (13) are also rotatably connected inside the ear picking box (9). The plurality of reed-moving driving wheels (10) and the reed-moving driven wheels (11) form a chain transmission mechanism through a reed-moving chain (12) and a tensioning wheel (13).

2. The corn harvester header transmission mechanism according to claim 1, characterized in that: The first tensioning portion (5) further comprises a support frame (502), wherein the middle portion of the support frame (502) is rotatably connected to the frame (1), the two rotating pressure wheels (501) are rotatably connected to the two ends of the support frame (502), and a tensioning spring (503) is connected between the support frame (502) and the frame (1).

3. The corn harvester header transmission mechanism according to claim 1, characterized in that: The reel chain (12) is arranged in a serpentine shape around a plurality of reel driving wheels (10), a reel driven wheel (11) and a tension wheel (13), and the two ends of the reel chain (12) are connected to form a closed loop.

4. The corn harvester header transmission mechanism according to claim 1, characterized in that: The two sides of one end of the ear picking box (9) are hingedly connected to a torsion plate (17), the tensioning wheel (13) is rotatably connected to the other end of the torsion plate (17), and a torsion spring is provided at the hinge between the torsion plate (17) and the ear picking box (9), so that the straw chain (12) is always kept in a tensioned state and can be driven when working.

5. The corn harvester header transmission mechanism according to claim 1, characterized in that: The steering portion (14) is configured as a steering gear, the plurality of second transmission shafts (16) are all distributed perpendicularly to the first transmission shaft (15), and the first transmission shaft (15) synchronously transmits the plurality of second transmission shafts (16) via the plurality of steering gears.

6. The corn harvester header transmission mechanism according to claim 1, characterized in that: An auger drum (6) is rotatably connected inside the frame (1), and the auger drum (6) is coaxially distributed with the auger sprocket (7) and is transmission-connected.

7. The corn harvester header transmission mechanism according to claim 1, characterized in that: The output shaft of the hydraulic motor (18) is drivingly connected to the driving sprocket (3); a fixing seat (2) is fixedly connected to the frame (1), and the hydraulic motor (18) is placed horizontally and fixed on the fixing seat (2).

8. The corn harvester header transmission mechanism according to claim 1, characterized in that: The transmission sprocket (3) and the auger sprocket (7) are located on both sides of the power transmission sprocket (8), and the axes of the transmission sprocket (3), the auger sprocket (7) and the power transmission sprocket (8) are arranged colinearly.

9. The corn harvester header transmission mechanism according to claim 8, characterized in that: The diameter of the auger sprocket (7) is greater than the diameters of the transmission sprocket (3) and the auger sprocket (7).

Images