A corn harvester based on a pre-tightening adjustment mechanism

Abstract

This invention discloses a corn harvester based on a pre-tensioning adjustment mechanism, comprising: a frame; a suspension support frame; an auger; a grain collection box; and a peeling mechanism disposed on the grain collection box, comprising: a box body; a first peeling roller and a second peeling roller; a third peeling roller and a fourth peeling roller; a peeling drive mechanism; two adjusting rods, one end of which is fixedly disposed at one end of each of the two peeling rollers; two torsion springs, each disposed on one adjusting rod; an oil storage chamber having an internal receiving cavity; an oil hole located at the bottom of the oil storage chamber; two piston cylinders, each connected to one end of the oil storage chamber; two piston mechanisms; two return springs; and an oil passage mechanism connected between the oil storage chamber and the piston cylinders. By cooperating between the oil storage chamber and the piston cylinders and pistons at its two ends, the position of the adjusting rods is changed, thereby changing the spacing between adjacent peeling rollers on the corn harvester and improving peeling efficiency.

Description

Technical Field

[0001] This invention relates to a corn harvester based on a pre-tightening adjustment mechanism, belonging to the field of corn harvesting devices. Background Technology

[0002] Currently, existing corn harvesters can be broadly categorized into two types based on their operational processes: one type involves ear picking, hulling, ear collection, and straw crushing and returning to the field or collection; the other type involves ear picking, ear collection, and straw crushing and returning to the field or collection. Due to varying regions and planting methods, a single machine cannot meet diverse harvesting needs and cannot adjust the spacing between the harvesting rollers according to the actual size of the corn ears, thus limiting the promotion and use of corn harvesters. Summary of the Invention

[0003] This invention designs and develops a corn harvester based on a pre-tightening adjustment mechanism. By cooperating between the oil storage chamber and the piston cylinders and pistons located at both ends, the position of the adjustment rod is changed, thereby changing the spacing between adjacent peeling rollers on the peeling mechanism of the corn harvester and improving the peeling efficiency of the corn harvester.

[0004] The technical solution provided by this invention is as follows:

[0005] A corn harvester based on a pre-tension adjustment mechanism includes:

[0006] Frame;

[0007] A suspension support frame, which is hinged to one end of the vehicle frame;

[0008] The auger is mounted on the suspension frame;

[0009] A grain collection bin, which is hinged to the auger;

[0010] A peeling mechanism, disposed on the grain collection bin, includes:

[0011] Box;

[0012] The first peeling roller and the second peeling roller are rotatably supported on the housing;

[0013] The third and fourth peeling rollers are rotatably supported on the housing.

[0014] A peeling drive mechanism is provided at one end of the housing, which can drive the first peeling roller and the second peeling roller to move relative to each other, and drive the third peeling roller and the fourth peeling roller to move relative to each other.

[0015] Two adjustment rods, one end of which is fixedly mounted on one end of each of the two peeling rollers;

[0016] Two torsion springs are respectively mounted on the adjustment rod;

[0017] The oil storage chamber has an internal cavity for receiving oil.

[0018] An oil hole is provided at the bottom of the oil reservoir;

[0019] Two piston cylinders are respectively connected to both ends of the oil reservoir;

[0020] Two piston mechanisms, one end of which is respectively disposed inside the piston cylinder, and the other end of which passes through the piston cylinder and is disposed outside the piston cylinder, and the other end of the piston mechanism is hinged to the other end of the adjusting rod;

[0021] Two return springs are respectively disposed inside the piston cylinder, with one end of the return spring abutting against the piston mechanism and the other end abutting against the inner wall of the piston cylinder;

[0022] An oil passage mechanism is provided between the oil reservoir and the piston cylinder.

[0023] Preferably, it also includes:

[0024] A rotating screw, disposed between the oil passage mechanism and the oil reservoir, is used to connect and close the oil reservoir to the oil passage mechanism.

[0025] Preferably, the piston mechanism includes:

[0026] piston;

[0027] A piston rod, one end of which is connected to the piston, and a torsion spring is coaxially mounted on the piston rod;

[0028] A connecting rod, one end of which is connected to the piston rod, and the other end of which can be connected to the adjusting rod.

[0029] Preferably, the oil passage mechanism includes:

[0030] The first oil passage and the second oil passage are connected at one end to the piston cylinder, and the other ends of the first oil passage and the second oil passage pass through the oil storage chamber and are connected to each other; one end of the rotating screw is connected to the connection between the first oil passage and the second oil passage.

[0031] Preferably, it also includes:

[0032] Two one-way valves are connected between the oil reservoir and the piston cylinder.

[0033] Preferably, the middle part of the adjustment rod is fixedly mounted on the housing of the corn harvesting table.

[0034] Preferably, the two ends of the torsion spring are disposed on the two ends of the adjusting rod.

[0035] Preferably, the oil storage chamber is further provided with an outer cavity.

[0036] Preferably, it also includes:

[0037] The ear-picking and cutting platform is hinged to the peeling mechanism and located at one end of the corn harvester.

[0038] Preferably, it also includes:

[0039] The elevator, one end of which is connected to the auger;

[0040] The ear of fruit is located at the other end of the frame, and the other end of the elevator is located above the ear of fruit.

[0041] The beneficial effects of this invention are as follows: The corn harvester based on the pre-tightening adjustment mechanism provided by this invention has a pre-tightening adjustment mechanism on the peeling mechanism. Through the cooperation between the oil storage chamber and the piston cylinder and piston at both ends, the position of the adjusting rod and the torsion spring are adjusted, thereby changing the distance between adjacent peeling rollers on the corn ear picking platform, improving peeling efficiency, ensuring that the corn ears are peeled smoothly, and ensuring the peeling effect of the corn ears, minimizing the loss of corn kernels, so that this mechanism can be applied in different regions and is suitable for different varieties. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the corn harvester based on the pre-tightening adjustment mechanism described in this invention.

[0043] Figure 2 This is a schematic diagram (I) of the power transmission system of the corn harvester based on the pre-tightening adjustment mechanism described in this invention.

[0044] Figure 3 This is a schematic diagram (II) of the power transmission system of the corn harvester based on the pre-tension adjustment mechanism described in this invention.

[0045] Figure 4 This is a schematic diagram (I) of the peeling mechanism and ear presser described in this invention.

[0046] Figure 5 This is a schematic diagram (II) of the peeling mechanism and ear conveyor described in this invention.

[0047] Figure 6 This is a schematic diagram of the pre-tightening adjustment mechanism described in this invention.

[0048] Figure 7 This is a cross-sectional view of the pre-tightening adjustment mechanism described in this invention. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0050] like Figure 1-7 As shown, the present invention provides a corn harvester based on a pre-tensioning adjustment mechanism, comprising: a frame 101, a transmission device 102, a walking wheel system 103, a suspension support frame 104, an auger 105, a grain collection box 106, a header 107, a peeling mechanism 108, an ear press conveyor 109, a cab 110, a hoist 111, an ear box 112, a stalk returning device 113, a chain power transmission system 114, and a header frame 1071.

[0051] like Figure 1-3 As shown, a corn harvester based on adjustable stalk roller gap includes: a frame 101, one end of a suspension support frame hinged 104 at one end of the frame 101, a corn ear box 112 disposed at the other end of the frame 101, a chain drive system 114 disposed below the frame, a transmission device 102 disposed on the frame and located at one end of the corn ear box 112, an auger 105 disposed on the suspension support frame 104, one end of a grain collection box 106 hinged to the other end of the suspension support frame, and a picking header 107 hinged to the grain collection box 105. At the other end of the receiving box 106, the peeling mechanism 108 is installed on the grain collection box 106, and the ear presser 109 is installed on the peeling mechanism 108. One end of the elevator 111 is connected to the auger 105, and the other end is installed above the ear box 112. At the bottom of the frame 101, a walking wheel system 103 is also installed. At the bottom of the frame 101, a stalk returning device and a transmission device are also installed. The ear picking cutter 107, the peeling mechanism 108 and the ear presser 109 are all driven independently by motors.

[0052] With the direction of travel as the positive direction of the corn harvester, the chain drive system 114 drives the first right sprocket 201r to rotate via the engine power output shaft. The first right sprocket 201r drives the eighth right sprocket 208r to rotate via the eighth chain 208a, which in turn drives the coaxial eighth sprocket 208 located on the left side of the vehicle to rotate. The eighth sprocket 208 drives the ninth sprocket 209 to rotate via the ninth chain 209a. The ninth sprocket 209 then drives the gearbox 210 to rotate via the tenth chain 210a, which in turn drives the wheels to move.

[0053] When the corn harvester enters the field and begins working, the engine drives the first sprocket 201 to rotate through the clutch device. The first sprocket 201 is then driven by the second chain 202a and the third chain 203a to rotate the second sprocket 202 and the third sprocket 203. The third sprocket 203 drives the fourth sprocket 204 to rotate through the fourth chain 204a, which is equipped with a tension wheel. The fourth sprocket 204 then drives the auger 105 to rotate through the fifth chain 205a. At the same time, the first sprocket 201 directly drives the sixth sprocket 206 to rotate through the sixth chain 206a. The sixth sprocket 206 then drives the seventh sprocket 207 to rotate through the seventh chain 207a, thereby driving the stalk returning device 113 to work.

[0054] The second sprocket 202 drives the coaxial second right sprocket 202r located on the right side of the vehicle to rotate. The second right sprocket 202r drives the eleventh sprocket 211 to rotate via the eleventh chain 211a. The eleventh sprocket 211 drives the twelfth sprocket 212 and the thirteenth sprocket 213 to rotate via the eleventh chain 212a and the thirteenth chain 213a. The twelfth sprocket 212 drives the blower to remove husks and weeds. The thirteenth sprocket 213 drives the elevator 111 to complete the transfer of the ears of fruit from the auger to the ear box.

[0055] The third sprocket 203 drives the coaxial third right sprocket 203r located on the right side of the vehicle to rotate. The third right sprocket 203r drives the fourteenth sprocket 214 to rotate through the fourteenth chain 214a equipped with a tension wheel. The fourteenth sprocket 214 then drives the fifteenth sprocket 215 to rotate through the chain. The fifteenth sprocket 215 drives the vibrating screen to work through the eccentric cam mechanism.

[0056] The peeling mechanism 108 is installed on the grain recycling box 106. The peeling mechanism includes: a box body 310 fixed on the grain recycling box, and a first peeling roller 408, a second peeling roller 409, a third peeling roller 410, and a fourth peeling roller 411 that are rotatably supported on the box body. The peeling drive mechanism is installed at one end of the box body 310 and can drive the first peeling roller 408 and the second peeling roller 409 to rotate relative to each other, as well as drive the third peeling roller 410 and the fourth peeling roller 411 to rotate relative to each other. The peeling drive mechanism includes: a peeling drive motor 401, a first bevel gear 402, a second bevel gear 403, a first cylindrical gear 407, a second cylindrical gear 406, a third cylindrical gear 404, and a fourth cylindrical gear 405. The peeling drive motor 401 is supported on the housing. The output end of the peeling drive motor 401 is connected to the first bevel gear 402. The first to fourth cylindrical gears are respectively matched on the first to fourth peeling rollers. The second bevel gear 403 and the third cylindrical gear 404 are coaxially arranged on the third peeling roller 410. The peeling drive motor 401 is connected to the first bevel gear 402. A first bevel gear 402 drives a second bevel gear 403 to rotate, which in turn drives a coaxial third peeling roller 410 to rotate. A third cylindrical gear 404 is coaxially mounted on the third peeling roller 410. The third cylindrical gear 404 meshes with a second cylindrical gear 406 on the second peeling roller 409 and a fourth cylindrical gear 405 on the fourth peeling roller 411, thereby driving the fourth cylindrical gear 405 and the second cylindrical gear 406 to rotate in the opposite direction. Simultaneously, the second cylindrical gear 406 drives a fifth cylindrical gear 407 on the first peeling roller 408 to rotate in the opposite direction. Therefore, driven by the peeling drive motor 401, the third peeling roller 410 and the fourth peeling roller 411 can rotate relative to each other, as can the first peeling roller 408 and the second peeling roller 409. Both ends of each peeling roller are supported on the housing by bearings.

[0057] As each pair of peeling rollers rotates relative to each other, the different tangential gripping forces exerted by each roller on the ear cause the ear to be continuously gripped and stripped of its leaves during rotation and sliding. Spiral rubber strips are provided on the third peeling roller 410, the second peeling roller 409, the fourth peeling roller 411, and the first peeling roller 408. The first peeling roller 408, the second peeling roller 409, the third peeling roller 410, and the fourth peeling roller 411 rotate relative to each other. The spiral rubber strips on the peeling rollers can uniformly distribute the ears of corn entering the peeling mechanism between the two pairs of rotating rollers, allowing them to advance smoothly along the relatively rotating rollers under the action of the planetary gears and the rotation of the ears themselves. During this process, the rotation direction of the rubber strips or nails on the first peeling roller 408, the second peeling roller 409, the third peeling roller 410, and the fourth peeling roller 411 ensures that the corn husks are torn open by the peeling rollers and pulled downwards by rotation and crushing, thus completing the ear peeling process.

[0058] The size of the gap between the third peeling roller 410 and the fourth peeling roller 411, and between the first peeling roller 408 and the second peeling roller 409, directly affects the peeling effect of corn husks. Adjustment rods 401 are provided at both ends of the first peeling roller 408 and the fourth peeling roller 411. The middle position of the rod is fixed to the support housing by a support pin, and the lower end is hinged to both ends of the double-chamber hydraulic device 402. Torsion springs 503 are respectively provided at the upper and lower ends of the adjustment rods 501 to enhance the torsional torque of the upper and lower ends relative to the support pins.

[0059] In the initial state of the peeling mechanism, the first peeling roller 408 and the fourth peeling roller 411, under the pre-tensioning action of the adjusting rod 401 and the torsion spring 403, have a relatively large initial gap between the third peeling roller 410 and the fourth peeling roller 411, and between the first peeling roller 408 and the second peeling roller 409. During the corn harvesting process, the gap between the peeling rollers can be automatically adjusted by adjusting the dual-chamber hydraulic device 502 according to the dryness and wetness of the corn ears; depending on the actual needs of the vehicle, the dual-chamber hydraulic device 502 can be adjusted by manual lever mechanism or by hydraulic control system.

[0060] like Figure 7 As shown, the dual-chamber hydraulic preload mechanism 502 includes: an oil port 5021, an oil reservoir 5022, a one-way valve 5023, a piston cylinder 5024, a piston 5025, a coil spring 5026, an oil passage 502a, and a screw 502b. The oil reservoir 5022 has a receiving cavity and stores oil. An outer cavity is also provided outside the oil reservoir 5022. An opening 5021 is provided at the bottom of the oil reservoir 5022. Two piston cylinders 5024 are respectively connected to both ends of the oil reservoir 5022. A piston mechanism is provided inside the piston cylinder 5024. The piston mechanism includes: a piston 502... 5. Piston rod and connecting rod: One end of the piston rod is connected to the piston, and the other end is connected to the connecting rod. The connecting rod passes through the piston cylinder and is hinged to the adjusting rod 501. Inside the piston cylinder 5024, a helical spring 5026 is provided. The helical spring is located outside the piston rod. One end of the helical spring 5026 abuts against the piston 5025, and the other end abuts against the inner wall of the piston cylinder 5024. At the connection between the piston cylinder 5024 and the oil reservoir 5022, a one-way valve 5023 is provided. By opening the one-way valve 5023, the oil in the oil reservoir 5022 flows into the piston cylinder 5024. Between the oil reservoir 5022 and the piston cylinder 5024, an oil passage mechanism 502a and a rotating screw 502b are also provided. The oil passage mechanism 502 includes a first oil passage and a second oil passage. One end of the first oil passage and the second oil passage are respectively connected to the piston cylinder 5024, and the other end passes through the oil reservoir 5022 and is connected to each other in the oil reservoir 5022 to form an oil passage assembly. At the top of the oil reservoir 5022, a rotating screw 502b is provided. By rotating the rotating screw, the connection between the piston cylinder 5024 and the oil reservoir 5022 is realized.

[0061] In operation, the oil volume in the dual-chamber hydraulic device 502 is controlled by a manual lever mechanism or a hydraulic control system. As oil enters the oil chamber 5022 from the oil hole 5021, the oil in the oil chamber 5022 enters the piston cylinders 5024 on both sides through the one-way valves 5023 on both sides. The oil pressure in the piston cylinders 5024 increases accordingly, pushing the piston 5025 to move to both ends. The helical spring 5026 is compressed accordingly. The lower ends of the adjusting rod 501 and the torsion spring 503, which are fixedly supported on the outer end of the piston 5025, expand outward around their support pins as the piston 5025 moves outward. The upper ends of the corresponding adjusting rod 501 and torsion spring 503 shift inward around their support pins. Therefore, as the oil volume in the dual-chamber hydraulic device 502 continuously increases...

[0062] When the manual lever mechanism or hydraulic control system stops working, the oil volume in the dual-chamber hydraulic device 502 no longer changes. Due to the setting of the one-way valve 5023, the oil pressure in the piston cylinders 5024 on both sides reaches a new equilibrium state with the adjusting rod 501 and the torsion spring 503. At this time, the torsional torque of the torsion spring 503 and the tension of the helical spring 5026 keep the adjusting rod 501 in the equilibrium position, and the gap between the peeling rollers remains at a certain value.

[0063] When the peeling mechanism stops working, the oil pressure in the oil chamber 5022 decreases as it connects to the outer chamber. At this time, an oil passage mechanism 502a, located on one side of the dual-chamber hydraulic device 502 and extending through the oil chamber 5022 to connect the left and right piston cylinders 5024, allows the oil in both piston cylinders 5024 to flow back into the oil chamber 5022. A rotating screw 502b on the oil passage 502a controls its opening and closing; rotating the screw connects the oil passage 502a to the oil chamber 5022. Under the pressure difference and spring force, the oil in both piston cylinders 5024 flows back into the oil chamber 5022 through the oil passage 502a. At this time, under the action of the torsional torque of the torsion spring 503 and the tension of the coil spring 5026, the pistons 5025 at both ends gradually return to their initial positions, that is, the adjusting rod 501 returns to its initial position. This ensures that the corn ears are peeled smoothly, while also ensuring the peeling effect of the corn ears and minimizing the loss of corn kernels.

[0064] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A corn harvester based on a pre-tensioning adjustment mechanism, characterized in that, include: Frame; A suspension support frame, which is hinged to one end of the vehicle frame; The auger is mounted on the suspension support frame; A grain collection bin, which is hinged to the auger; A peeling mechanism, disposed on the grain collection bin, includes: Box; The first peeling roller and the second peeling roller are rotatably supported on the housing; The third and fourth peeling rollers are rotatably supported on the housing. A peeling drive mechanism is provided at one end of the housing, which can drive the first peeling roller and the second peeling roller to move relative to each other, and drive the third peeling roller and the fourth peeling roller to move relative to each other. Two adjustment rods, one end of which is fixedly set at one end of the first peeling roller and the fourth peeling roller, respectively; Two torsion springs are respectively mounted on the adjustment rod; The oil storage chamber has an internal cavity for receiving oil. An oil hole is provided at the bottom of the oil reservoir; Two piston cylinders are respectively connected to both ends of the oil reservoir; Two piston mechanisms, one end of which is respectively disposed inside the piston cylinder, and the other end of which passes through the piston cylinder and is disposed outside the piston cylinder, and the other end of the piston mechanism is hinged to the other end of the adjusting rod; Two return springs are respectively disposed inside the piston cylinder, with one end of the return spring abutting against the piston mechanism and the other end abutting against the inner wall of the piston cylinder; An oil passage mechanism is connected between the oil reservoir and the piston cylinder; The piston mechanism includes: piston; A piston rod, one end of which is connected to the piston, and a return spring is coaxially mounted on the piston rod; A connecting rod, one end of which is connected to the piston rod, and the other end of which can be connected to the adjusting rod; A rotating screw, disposed between the oil passage mechanism and the oil reservoir, is used to connect and close the oil reservoir to the oil passage mechanism; The oil passage mechanism includes: The first oil passage and the second oil passage are connected at one end to the piston cylinder, and the other ends of the first oil passage and the second oil passage pass through the oil reservoir and are connected to each other; one end of the rotating screw is connected to the connection between the first oil passage and the second oil passage. The upper ends of the two torsion springs are respectively sleeved on one end of the first peeling roller and the fourth peeling roller, and the lower ends are respectively sleeved on the piston rod.

2. The corn harvester based on the pre-tension adjustment mechanism according to claim 1, characterized in that, Also includes: Two one-way valves are connected between the oil reservoir and the piston cylinder.

3. The corn harvester based on the pre-tension adjustment mechanism according to claim 2, characterized in that, The adjustment rod is fixedly mounted in the middle on the housing of the corn harvesting and cutting platform.

4. The corn harvester based on the pre-tension adjustment mechanism according to claim 3, characterized in that, The oil storage chamber is also provided with an external cavity.

5. The corn harvester based on the pre-tension adjustment mechanism according to claim 4, characterized in that, Also includes: The corn ear-picking header is hinged to the peeling mechanism and located at one end of the corn harvester.

6. The corn harvester based on the pre-tension adjustment mechanism according to claim 5, characterized in that, Also includes: The elevator, one end of which is connected to the auger; The ear of fruit is located at the other end of the frame, and the other end of the elevator is located above the ear of fruit.

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