A corn harvester

Abstract

The utility model discloses a corn harvester, including power system, power system transmission connection power transmission mechanism, power transmission mechanism includes power main shaft and power auxiliary shaft, power main shaft is connected with power auxiliary shaft transmission, be provided with a plurality of power transmission gear A on power main shaft, be provided with a plurality of walking speed change gear B on power auxiliary shaft, walking speed change gear B and power transmission gear A slide fit, power main shaft transmission connection has the harvesting rotary tillage power mechanism, power auxiliary shaft transmission connection has walking power mechanism, walking casing and brake transmission gear J1 are provided with brake mechanism, through walking speed change gear B and the slide fit of a plurality of power transmission gear A on power main shaft, can flexibly adjust the speed of walking and the working speed of the harvesting portion match, control brake mechanism to brake transmission gear J1 brake to can avoid the situation of the machine after parking appears the car.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery, and specifically relates to a corn harvester. Background Technology

[0002] Small corn harvesters are highly adaptable and can be widely used in scattered plots of land, such as hilly and mountainous areas, where large corn harvesters cannot reach. Their small size makes them easier to transport and store, which is an advantage for family farms or small-scale growers.

[0003] When existing corn harvesters use belt or chain drives for power transmission, the pulleys are prone to slippage or the chains are prone to coming off during the transmission process.

[0004] Although some corn harvesters on the market use gear transmission to solve the problem of belt slippage or chain detachment, they cannot flexibly control the harvesting and walking parts. This can easily lead to situations where the walking speed is too fast or too slow and cannot match the working speed of the harvesting part, resulting in low work efficiency.

[0005] Furthermore, the existing corn harvesters are large combined corn harvesters and special corn harvesters, which are not suitable for the current small plots. Since there is a large inventory of existing micro-tillers, directly modifying the micro-tillers and applying them to small corn harvesters can reduce inventory while still meeting the needs of harvesting corn in small plots. However, the existing micro-tillers do not have braking mechanisms, and once applied to corn harvesters, they are prone to slipping after parking, which could lead to dangerous situations.

[0006] To address this issue, our company has developed a corn harvester that is highly maneuverable, efficient, and free from slippage. Utility Model Content

[0007] To address the aforementioned problems, this utility model designs a corn harvester, including a frame on which a power system is mounted. The power system is connected to a power transmission mechanism, which includes a main power shaft and a secondary power shaft. The main power shaft and the secondary power shaft are connected. The main power shaft has several power transmission gears A, and the secondary power shaft has several travel gears B. The travel gears B are slidably engaged with the power transmission gears A. The main power shaft is connected to a harvesting rotary tillage power mechanism, and the secondary power shaft is connected to a travel power mechanism.

[0008] The walking power mechanism includes a walking housing, a walking power transmission shaft is provided inside the walking housing, a brake transmission gear J1 is provided on the walking power transmission shaft, and a braking mechanism is provided on the walking housing and the brake transmission gear J1.

[0009] The power system includes an engine, the output end of which is connected to a power transmission mechanism, a clutch is connected between the output end of the engine and the power transmission mechanism, and a battery is connected to the engine.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: Power is transmitted to the power transmission mechanism through the power system. A main power shaft and a secondary power shaft are set in the power transmission mechanism. A harvesting and rotary tillage power mechanism is added to the main power shaft, and a walking power mechanism is added to the secondary power shaft. This allows power to be transmitted to the harvesting and walking parts respectively. By setting several walking speed-changing gears B on the secondary power shaft and slidingly engaging with several power transmission gears A on the main power shaft, the speed of the walking power can be changed during transmission by the secondary power shaft. This allows for flexible adjustment of the walking speed to match the working speed of the harvesting part, improving work efficiency. Furthermore, by setting a walking power transmission shaft within the walking housing of the walking power mechanism, and adding a brake transmission gear J1 to the walking power transmission shaft, the walking housing supports the braking mechanism while simultaneously controlling the braking mechanism to brake the brake transmission gear J1. This prevents the machine from slipping after parking, improving machine safety.

[0011] Furthermore, the braking mechanism includes a brake ring and a brake lever, and the brake transmission gear J1 is provided with a brake groove, and the brake ring is disposed in the brake groove;

[0012] The brake ring has an opening, one end of the brake rod is held in the opening, and the other end of the brake rod is rotatably mounted on the travel housing through the travel housing. The brake rod has a brake surface one and a brake surface two opposite to each other, and the brake rod also has a non-brake surface three and a non-brake surface four opposite to each other.

[0013] The beneficial effects of adopting the above-mentioned further technical solution are as follows: By setting an opening on the brake ring, one end of the brake lever is held in the opening. When the non-braking surface three and non-braking surface four are in contact with the cross section of the opening, the brake ring is not in close contact with the brake transmission gear J1. Rotating the brake lever, which is set in the walking housing at the other end, makes the brake surface one and brake surface two of the brake lever contact with the cross section at the opening, which enables the brake lever to push the brake ring outward, increasing the radius of the brake ring and generating a larger frictional force on the brake transmission gear J1, thereby locking the gear inside the walking power mechanism and preventing the vehicle from slipping when parked.

[0014] Furthermore, the first and second braking surfaces are outwardly convex curved surfaces, the third and fourth non-braking surfaces are planes, and the distance from the first braking surface to the second braking surface is greater than the distance from the first non-braking surface to the second non-braking surface.

[0015] Preferably, the brake lever is a round rod, the end of the brake lever that is held in the opening is a flat end, and the brake ring is an open, flexible circular ring.

[0016] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by making the braking surface an outwardly convex curved surface and the non-braking surface a plane, the distance from braking surface one to braking surface two is greater than the distance from non-braking surface one to non-braking surface two, which can adjust the size of the opening of the brake ring by the brake rod, thereby adjusting the diameter of the brake ring; by making the brake rod a round rod with a flat end set in the opening, and the brake ring a non-closed flexible ring, it is convenient to rotate the brake rod and at the same time convenient to open the brake ring.

[0017] Furthermore, the power transmission gear A includes a power transmission gear A1 and a power transmission gear A2, and the power transmission gear B includes a travel gear B1 and a travel gear B2. The travel gear B1 is slidably engaged with the power transmission gear A1, and the travel gear B2 is slidably engaged with the power transmission gear A2. The diameter of the power transmission gear A1 is larger than the diameter of the power transmission gear A2, and the diameter of the travel gear B1 is smaller than the diameter of the travel gear B2.

[0018] The power transmission mechanism also includes a reverse gear shaft, and a reverse gear A1 is also provided on the power main shaft;

[0019] The reverse gear shaft is provided with a reverse gear C1 and a reverse gear C2. The reverse gear C1 meshes with the reverse gear A1, and the travel gear B2 slides in mesh with the reverse gear C2.

[0020] Preferably, the reverse gear shaft is arranged parallel to the main power shaft and the auxiliary power shaft.

[0021] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by slidingly engaging the travel gear B1 with the power transmission gear A1, the travel power mechanism is in a fast gear state; by slidingly engaging the travel gear B2 with the power transmission gear A2, the travel power mechanism is in a slow gear state; by setting a reverse gear shaft, the reverse gear A1 on the power main shaft engages with the reverse gear C1 on the reverse gear shaft, and the travel gear B2 on the sliding power secondary shaft engages with the reverse gear C2, so that the direction of rotation of the power secondary shaft is opposite to the direction of rotation of the power main shaft, thereby enabling the travel power mechanism to reverse, thus further improving the flexibility during travel.

[0022] Furthermore, the harvesting rotary tillage power mechanism includes a harvesting rotary tillage power housing, a harvesting rotary tillage power input shaft, a first ear-picking power output roller, a second ear-picking power output roller, a rotary tillage power transmission shaft, and a rotary tillage power output shaft. The harvesting rotary tillage power input shaft, the first ear-picking power output roller, the second ear-picking power output roller, the rotary tillage power transmission shaft, and the rotary tillage power output shaft are arranged inside the harvesting rotary tillage power housing.

[0023] Preferably, the harvesting rotary tillage power input shaft is connected to the main power shaft through one side of the housing, and a power input gear D1 is slidably disposed on the harvesting rotary tillage power input shaft, and the power input gear D1 is connected to a shift fork;

[0024] The ear-picking power output roller is provided with ear-picking gear E1 and ear-picking gear E2, and ear-picking gear E1 is slidably meshed with power input gear D1;

[0025] The second ear-picking power output roller is equipped with an ear-picking gear F1, which meshes with the ear-picking gear E2;

[0026] The rotary tillage power transmission shaft is equipped with a power transmission gear G1 and a power transmission gear G2. The power transmission gear G2 meshes with the ear-picking gear E1, and the power transmission gear G1 is a bevel gear.

[0027] The rotary tillage power output shaft is provided with a power output gear H1, which meshes with the power transmission gear G1. The power output gear H1 is a bevel gear. One end of the rotary tillage power output shaft passes through the housing and is connected to a rotary tillage device. The rotary tillage device is located on the lower side of the harvesting rotary tillage power mechanism.

[0028] Preferably, a coupling is provided on the input end of the harvesting rotary tillage power input shaft and the output end of the power main shaft. The coupling includes a first sprocket, a second sprocket, and a double chain. The first sprocket is located at the input end of the harvesting rotary tillage power input shaft, the second sprocket is located at the output end of the power main shaft, and the double chain is sleeved on the first sprocket and the second sprocket.

[0029] Furthermore, the harvesting rotary tillage power input shaft, the first ear-picking power output roller, the second ear-picking power output roller, and the rotary tillage power transmission shaft are arranged in parallel, and the rotary tillage power output shaft is arranged perpendicular to the rotary tillage power transmission shaft.

[0030] The first and second ear-picking power output rollers are located below the harvesting rotary tillage power input shaft. The height of the second ear-picking power output roller is lower than that of the first ear-picking power output roller. The rotary tillage power output shaft is located below the first and second ear-picking power output rollers.

[0031] Furthermore, the harvesting rotary tillage power mechanism is connected to a harvesting assembly, which includes a first ear-picking roller and a second ear-picking roller. The first ear-picking roller is connected to a first ear-picking power output roller, and the second ear-picking roller is connected to a second ear-picking power output roller. Conveying ribs are provided on the first ear-picking roller and the second ear-picking roller. The height of the second ear-picking roller is lower than the height of the first ear-picking roller.

[0032] Preferably, a receiving hopper is provided on one side of the second ear-picking roller, and the receiving hopper is connected to the control mechanism.

[0033] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the power main shaft of the power transmission mechanism drives the harvesting rotary tillage power input shaft to rotate, the sliding power input gear D1 meshes with the ear-picking gear E1, causing the harvesting rotary tillage power input shaft to drive the ear-picking power output roller one to rotate, thereby driving the ear-picking roller one to rotate. Through the ear-picking gear E2 meshing with the ear-picking gear F1, the ear-picking power output roller one drives the ear-picking roller one to rotate, thereby driving the ear-picking roller two to rotate, thus cutting the corn. Through the power transmission gear G2 meshing with the ear-picking gear E1, and the power output gear H1 meshing with the power transmission gear G1, the rotary tillage power transmission shaft drives the rotary tillage power output shaft to rotate, thereby enabling the rotary tillage device to perform rotary tillage operations. By setting sprocket one at the input end of the harvesting rotary tillage power input shaft and sprocket two at the output end of the power main shaft, and by setting the double chain sleeve on sprocket one and sprocket two, a stable state can be maintained during the power transmission process.

[0034] By lowering the height of the second ear-picking power output roller than the first ear-picking power output roller, the harvesting assembly can be driven to rotate. After the harvesting assembly harvests the corn, it slides along the ear-picking power output roller at an angle into the hopper. By setting the rotary tillage power output shaft below the first and second ear-picking power output rollers, the transmission path connecting the rotary tillage power input shaft and the rotary tillage device can be shortened, making the machine more compact and lightweight.

[0035] Furthermore, the output end of the first or second ear-picking roller is provided with a lever mechanism. The lever mechanism includes a lever power transmission mechanism, a lever disk, and several levers. The several levers are arranged on the lever disk. The lever power transmission mechanism is a turbine and a worm gear. The worm gear is drivenly connected to the output end of the first or second ear-picking roller, and the turbine is drivenly connected to the lever disk.

[0036] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by setting a lever mechanism at the output end of the first or second ear-picking roller, the first or second ear-picking roller can rotate to drive the worm gear to rotate, thereby driving the worm gear to rotate the turbine, converting the force transmitted along the ear-picking roller into a force perpendicular to the ear-picking roller, thereby driving the lever disc to rotate, and causing the lever disc to drive the lever to push the corn between the first and second ear-picking rollers.

[0037] Furthermore, the walking power mechanism also includes a walking power input shaft and a walking power output shaft. The walking power input shaft is driven to the walking power transmission shaft, the walking power input shaft is driven to the power auxiliary shaft, and the walking power transmission shaft is driven to the walking power output shaft.

[0038] Preferably, the walking power input shaft is provided with a power input gear I1 and a power input gear I2, wherein the power input gear I1 is a bevel gear and the power input gear I2 is a conical gear;

[0039] The power output gear B1 is also provided on the power subshaft. The power output gear B1 is a bevel gear. The power input gear I1 meshes with the power output gear B1.

[0040] The walking power transmission shaft is also provided with a power transmission gear J2, which meshes with the power input gear I2. The power transmission gear J1 is a bevel gear.

[0041] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the power input gear I1 of the walking power input shaft meshes with the power output gear B1, thereby causing the power secondary shaft of the power transmission mechanism to drive the walking power input shaft to rotate. The power input gear I2 of the walking power input shaft meshes with the power transmission gear J1, and the power output gear K1 meshes with the power transmission gear J2, causing the small gear to drive the large gear to rotate, thereby causing the walking power transmission shaft and the walking power output shaft to rotate. This can decelerate the walking power mechanism before outputting. By setting a brake slot on the power transmission gear J1, and setting the brake mechanism in the brake slot, the brake mechanism can cooperate with the brake slot to limit the power transmission gear J1, so that the gears inside the walking power mechanism will not rotate after parking, preventing the vehicle from rolling away after parking.

[0042] Furthermore, the walking power input shaft is arranged perpendicularly to the walking power transmission shaft, the walking power transmission shaft is arranged parallel to the walking power output shaft, and the walking power transmission shaft and the walking power output shaft are arranged below the walking power input shaft.

[0043] Furthermore, the walking power output shaft passes through the walking housing and is connected to the walking wheel. A differential is provided on the walking power output shaft. The differential is respectively located on both sides of the power output power transmission gear K1 and is located outside the walking housing.

[0044] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by setting the walking power input shaft and the walking power transmission shaft perpendicularly, and setting the walking power transmission shaft and the walking power output shaft parallelly, the vertical force transmitted from the power system can be changed into a lateral force, thereby realizing the walking of the walking wheels. By setting the differential on the walking power output shaft and located outside the walking housing, it is convenient for the user to operate the differential using the control mechanism, which is beneficial to the steering of the walking power mechanism.

[0045] Furthermore, a handrail is provided at the end of the power system away from the harvesting rotary tillage power mechanism, and a control mechanism is provided on the handrail. The control mechanism is connected to the power system, the harvesting rotary tillage power mechanism, the walking power mechanism, the braking mechanism and the differential. The control mechanism includes a hopper control mechanism, a harvesting rotary tillage control mechanism, a clutch control mechanism, a walking speed control mechanism, a reverse gear control mechanism, a steering control mechanism and a walking brake control mechanism.

[0046] Preferably, the walking speed control mechanism is a lever and cable control, and the hopper control mechanism, harvesting rotary tillage control mechanism, clutch control mechanism, reverse gear control mechanism, steering control mechanism and walking braking control mechanism are lever and cable control or brake lever and cable control.

[0047] Preferably, a gathering frame is provided on the side of the frame away from the harvesting power transmission mechanism. The gathering frame includes an upper support, a middle support, and a lower support. The upper and middle supports are U-shaped, and the lower support is V-shaped.

[0048] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: the hopper control mechanism can control the opening and closing of the hopper for loading and unloading corn; the harvesting and rotary tillage control mechanism can control the start and stop of the harvesting components and rotary tillage device for harvesting and rotary tillage operations; the clutch control mechanism can control the transmission and disconnection of power between the engine and the power transmission mechanism; the reverse gear control mechanism can control the walking power mechanism to reverse; the steering control mechanism can control the walking power mechanism to easily steer; and the walking brake control mechanism controls the braking mechanism to brake the walking power mechanism internally, preventing the vehicle from slipping when parked. The gathering frame, including the upper, middle, and lower supports, can gather the corn before harvesting, which helps improve the efficiency of corn harvesting. Attached Figure Description

[0049] Figure 1 Schematic diagram of the transmission mechanism of a corn harvester Figure 1 ;

[0050] Figure 2 This is a schematic diagram of a corn harvester.

[0051] Figure 3Schematic diagram of the transmission mechanism of a corn harvester Figure 2 ;

[0052] Figure 4 Schematic diagram of the walking power mechanism Figure 1 ;

[0053] Figure 5 This is a schematic diagram of the power transmission mechanism;

[0054] Figure 6 Schematic diagram of the rotary tillage power mechanism for harvesting Figure 1 ;

[0055] Figure 7 Schematic diagram of the rotary tillage power mechanism for harvesting Figure 2 ;

[0056] Figure 8 Schematic diagram of the walking power mechanism Figure 2 ;

[0057] Figure 9 Schematic diagram of the braking mechanism Figure 1 ;

[0058] Figure 10 Schematic diagram of the braking mechanism Figure 2 ;

[0059] Figure 11 Schematic diagram of the braking mechanism Figure 3 ;

[0060] Figure 12 This is a schematic diagram of the lever power transmission mechanism.

[0061] Markings in the diagram: 1. Power system; 11. Engine; 12. Clutch; 13. Battery; 2. Power transmission mechanism; 21. Main power shaft; 211. Power transmission gear A1; 212. Power transmission gear A2; 213. Reverse gear A1; 22. Power countershaft; 221. Travel gear B1; 222. Travel gear B2; 223. Power output gear B1; 23. Reverse shaft; 231. Reverse gear C1; 232. Reverse gear C2; 3. Harvesting rotary tillage power mechanism; 31. Harvesting rotary tillage power housing 32. Harvesting rotary tillage power input shaft; 321. Power input gear D1; 33. Harvesting power output roller one; 331. Harvesting gear E1; 332. Harvesting gear E2; 34. Harvesting power output roller two; 341. Harvesting gear F1; 35. Rotary tillage power transmission shaft; 351. Power transmission gear G1; 352. Power transmission gear G2; 36. Rotary tillage power output shaft; 361. Power output gear H1; 37. Coupling; 371. Sprocket one; 372. Sprocket two; 38. Rotary tillage device; 4. Walking power unit Structure; 41. Walking housing; 42. Walking power input shaft; 421. Power input gear I1; 422. Power input gear I2; 43. Walking power transmission shaft; 431. Brake transmission gear J1; 432. Power transmission gear J2; 433. Brake slot; 44. Walking power output shaft; 441. Power output gear K1; 442. Differential; 45. Limiting hole; 46. Walking wheel; 5. Braking mechanism; 51. Brake ring; 511. Opening; 52. Brake lever; 521. Brake surface one; 522. Brake surface two 523. Non-braking surface three; 524. Non-braking surface four; 6. Harvesting assembly; 61. Harvesting roller one; 62. Harvesting roller two; 63. Lever power transmission mechanism; 631. Turbine; 632. Worm gear; 64. Lever disc; 65. Lever; 7. Handrail; 81. Frame; 82. Gathering frame; 9. Control mechanism; 91. Hopper control mechanism; 92. Harvesting rotary tillage control mechanism; 93. Clutch control mechanism; 94. Travel speed control mechanism; 95. Reverse gear control mechanism; 96. Steering control mechanism; 97. Travel braking control mechanism; Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model.

[0063] This embodiment provides Example 1.

[0064] Please see Figure 1-12A corn harvester includes a frame 81, on which a power system 1 is mounted. The power system 1 is connected to a power transmission mechanism 2. The power transmission mechanism 2 includes a main power shaft 21 and a secondary power shaft 22, which are connected. The main power shaft 21 has several power transmission gears A, and the secondary power shaft 22 has several travel gears B, which are slidably engaged with the power transmission gears A. The main power shaft 21 is connected to a harvesting rotary tillage power mechanism 3, and the secondary power shaft 22 is connected to a travel power mechanism 4. The travel power mechanism 4 includes a travel housing 41, inside which a travel power transmission shaft 43 is mounted. The travel power transmission shaft 43 has a brake transmission gear J1431, and a brake mechanism 5 is mounted on the travel housing 41 and the brake transmission gear J1431. The power system 1 includes an engine 11, the output end of which is connected to a power transmission mechanism 2. A clutch 12 connects the output end of the engine 11 and the power transmission mechanism 2. A battery 13 is connected to the engine 11. The power system 1 transmits power to the power transmission mechanism 2. A main power shaft 21 and a secondary power shaft 22 are provided in the power transmission mechanism 2. A harvesting and rotary tillage power mechanism 3 is added to the main power shaft 21, and a walking power mechanism 4 is added to the secondary power shaft 22, thereby transmitting power to the harvesting part and the walking part respectively. Several walking speed-changing gears are provided on the secondary power shaft 22. B slides in contact with several power transmission gears A on the main power shaft 21, allowing the speed of the walking power to be changed during transmission by the active secondary shaft. This enables flexible adjustment of the walking speed to match the working speed of the harvesting section, thereby improving work efficiency. By setting a walking power transmission shaft 43 inside the walking housing 41 of the walking power mechanism 4, and adding a brake transmission gear J1431 on the walking power transmission shaft 43, the walking housing 41 supports the braking mechanism 5 while controlling the braking mechanism 5 to brake the brake transmission gear J1431. This prevents the machine from slipping after parking, improving the machine's safety.

[0065] The braking mechanism 5 includes a brake ring 51 and a brake rod 52. The brake transmission gear J1431 is provided with a brake groove 433, and the brake ring 51 is disposed in the brake groove 433. The brake ring 51 is provided with an opening 511, and one end of the brake rod 52 is held in the opening 511. The other end of the brake rod 52 passes through the travel housing 41 and is rotatably disposed on the travel housing 41. The brake rod 52 is provided with a first braking surface 521 and a second braking surface 522 opposite to each other. The brake rod 52 is also provided with a third non-braking surface 523 and a fourth non-braking surface 524 opposite to each other. By setting an opening 511 on the brake ring 51, one end of the brake lever 52 is held in the opening 511. When the non-braking surface 3 523 and the non-braking surface 4 524 are in contact with the cross section of the opening 511, the brake ring 51 is not in close contact with the brake transmission gear J1431. Rotating the brake lever 52, which is set in the travel housing 41 at the other end, makes the braking surface 1 521 and the braking surface 2 522 of the brake lever 52 in contact with the cross section at the opening 511. This allows the brake lever 52 to push the brake ring 51 outward, increasing the radius of the brake ring 51 and generating a larger frictional force on the brake transmission gear J1431. This locks the gear inside the travel power mechanism 4, preventing the vehicle from slipping when parked.

[0066] The first braking surface 521 and the second braking surface 522 are outwardly convex curved surfaces, the third non-braking surface 523 and the fourth non-braking surface 524 are planes, the distance from the first braking surface 521 to the second braking surface 522 is greater than the distance from the first non-braking surface 521 to the second non-braking surface 522; the brake rod 52 is a round rod, the end of the brake rod 52 that is held in the opening 511 is a flat head, and the brake ring 51 is an open flexible ring. By using an outwardly convex curved surface for the braking surface and a flat surface for the non-braking surface, the distance from braking surface 521 to braking surface 522 is greater than the distance from non-braking surface 521 to non-braking surface 522. This allows adjustment of the opening size of the brake rod 52 on the brake ring 51 opening 511, thereby adjusting the diameter of the brake ring 51. The brake rod 52 is a round rod with a flat end inside the opening 511, and the brake ring 51 is an open, flexible ring, which facilitates the rotation of the brake rod 52 and the opening of the brake ring 51.

[0067] The power transmission gear A includes a power transmission gear A1211 and a power transmission gear A2212. The power transmission gear B includes a travel gear B1221 and a travel gear B2222. The travel gear B1221 is slidably engaged with the power transmission gear A1211, and the travel gear B2222 is slidably engaged with the power transmission gear A2212. The diameter of the power transmission gear A1211 is larger than the diameter of the power transmission gear A2212. The diameter of B1221 is smaller than the diameter of the travel gear B2222; the power transmission mechanism 2 also includes a reverse gear shaft 23, and a reverse gear A2 is also provided on the main power shaft 21; a reverse gear C1231 and a reverse gear C2232 are provided on the reverse gear shaft 23, the reverse gear C1231 meshes with the reverse gear A1213, and the travel gear B2222 slides in mesh with the reverse gear C2232; the reverse gear shaft 23 is arranged parallel to the main power shaft 21 and the secondary power shaft 22. By sliding the travel gear B1221 with the power transmission gear A1211, the travel power mechanism 4 is in fast gear. By sliding the travel gear B2222 with the power transmission gear A2212, the travel power mechanism 4 is in slow gear. By setting a reverse gear shaft, the reverse gear A1213 on the main power shaft 21 meshes with the reverse gear C1231 on the reverse gear shaft, and the travel gear B2 on the sliding power auxiliary shaft 22 meshes with the reverse gear C2232. This allows the power auxiliary shaft 22 to rotate in the opposite direction to the main power shaft 21, thus enabling the travel power mechanism 4 to reverse, thereby further improving the flexibility during travel.

[0068] The harvesting rotary tillage power mechanism 3 includes a harvesting rotary tillage power housing 31, a harvesting rotary tillage power input shaft 32, a first ear-picking power output roller 33, a second ear-picking power output roller 34, a rotary tillage power transmission shaft 35, and a rotary tillage power output shaft 36. The harvesting rotary tillage power input shaft 32, the first ear-picking power output roller 33, the second ear-picking power output roller 34, the rotary tillage power transmission shaft 35, and the rotary tillage power output shaft 36 are disposed inside the harvesting rotary tillage power housing 31. The harvesting rotary tillage power input shaft 32 penetrates one side of the housing and connects to the main power unit. A drive connection is made to shaft 21. A power input gear D1321 is slidably mounted on the harvesting rotary tillage power input shaft 32, and the power input gear D1321 is connected to a shift fork. A first harvesting power output roller 33 is equipped with harvesting gears E1331 and E2332, with E1331 slidably meshing with the power input gear D1321. A second harvesting power output roller 34 is equipped with harvesting gear F1341, which meshes with harvesting gear E2332. The rotary tillage power transmission shaft 35 is equipped with power transmission gears G1351 and G2352, wherein power transmission gear G2352 meshes with a picking gear E1331, and power transmission gear G1351 is a bevel gear; the rotary tillage power output shaft 36 is equipped with a power output gear H1361, wherein power output gear H1361 meshes with power transmission gear G1351, and power output gear H1361 is a bevel gear, and one end of the rotary tillage power output shaft 36 penetrates the housing. A rotary tillage device 38 is connected to the transmission, and the rotary tillage device 38 is located on the lower side of the harvesting rotary tillage power mechanism 3; a coupling 37 is provided on the input end of the harvesting rotary tillage power input shaft 32 and the output end of the power main shaft 21. The coupling 37 includes a first sprocket 371, a second sprocket 372 and a double chain. The first sprocket 371 is located at the input end of the harvesting rotary tillage power input shaft 32, the second sprocket 372 is located at the output end of the power main shaft 21, and the double chain is sleeved on the first sprocket 371 and the second sprocket 372.

[0069] The harvesting rotary tillage power input shaft 32, the first ear-picking power output roller 33, the second ear-picking power output roller 34, and the rotary tillage power transmission shaft 35 are arranged in parallel, and the rotary tillage power output shaft 36 is arranged perpendicular to the rotary tillage power transmission shaft 35; the first ear-picking power output roller 33 and the second ear-picking power output roller 34 are located below the harvesting rotary tillage power input shaft 32, the height of the second ear-picking power output roller 34 is lower than that of the first ear-picking power output roller 33, and the rotary tillage power output shaft 36 is located below the first ear-picking power output roller 33 and the second ear-picking power output roller 34.

[0070] The harvesting rotary tillage power mechanism 3 is driven to a harvesting assembly 6, which includes a first ear-picking roller 61 and a second ear-picking roller 62. The first ear-picking roller 61 is driven to a first ear-picking power output roller 33, and the second ear-picking roller 62 is driven to a second ear-picking power output roller 34. Conveying ribs are provided on the first ear-picking roller 61 and the second ear-picking roller 62. The height of the second ear-picking roller 62 is lower than the height of the first ear-picking roller 61. A receiving hopper is provided on one side of the second ear-picking roller 62, and the receiving hopper is connected to the control mechanism 9. The main power shaft 21 of the power transmission mechanism 2 drives the harvesting rotary tillage power input shaft 32 to rotate. The sliding power input gear D1321 meshes with the ear-picking gear E1331, causing the harvesting rotary tillage power input shaft 32 to drive the ear-picking power output roller 33 to rotate, thereby driving the ear-picking roller 61 to rotate. Through the engagement of the ear-picking gear E2332 and the ear-picking gear F1341, the ear-picking power output roller 33 drives the ear-picking roller 61 to rotate, thereby driving the ear-picking roller 62 to rotate, thus cutting the corn. Through the engagement of the power transmission gear G2352 and the ear-picking gear E1331, and the engagement of the power output gear H1361 and the power transmission gear G1351, the rotary tillage power transmission shaft 35 drives the rotary tillage power output shaft 36 to rotate, thus rotating the rotary tillage shaft. Device 38 performs rotary tillage. A first sprocket 371 is positioned at the input end of the harvesting rotary tillage power input shaft 32, and a second sprocket 372 is positioned at the output end of the power main shaft 21. A double chain is fitted onto sprockets 371 and 372 to maintain a stable power transmission. The second ear-picking power output roller 34, being lower than the first ear-picking power output roller 33, drives the harvesting assembly 6 to rotate. After harvesting the corn, the harvesting assembly 6 slides the corn along the ear-picking power output roller at an angle into the hopper. The rotary tillage power output shaft 36, positioned below the first ear-picking power output roller 33 and the second ear-picking power output roller 34, shortens the transmission path between the rotary tillage power input shaft 32 and the rotary tillage device 38, making the machine more compact and lightweight.

[0071] A lever mechanism is provided at the output end of the first ear-picking roller 61 or the second ear-picking roller 62. The lever mechanism includes a lever power transmission mechanism 63, a lever disk 64, and several levers 65. The levers 65 are mounted on the lever disk 64. The lever power transmission mechanism 63 consists of a turbine 631 and a worm gear 632. The worm gear 632 is driven to the output end of the first ear-picking roller 61 or the second ear-picking roller 62, and the turbine 631 is driven to the lever disk 64. By providing a lever mechanism at the output end of the first ear-picking roller 61 or the second ear-picking roller 62, the rotation of the first ear-picking roller 61 or the second ear-picking roller 62 can drive the worm gear 632 to rotate, thereby causing the worm gear 632 to drive the turbine 631 to rotate. This converts the force transmitted along the ear-picking roller into a force perpendicular to the ear-picking roller, thereby driving the lever disk 64 to rotate. The lever disk 64 then drives the levers 65 to move the corn between the first ear-picking roller 61 and the second ear-picking roller 62.

[0072] The walking power mechanism 4 further includes a walking power input shaft 42 and a walking power output shaft 44. The walking power input shaft 42 is connected to the walking power transmission shaft 43 and the power auxiliary shaft 22. The walking power transmission shaft 43 is connected to the walking power output shaft 44. The walking power input shaft 42 is provided with a power input gear I1421 and a power input gear I2422. The power input gear I1421 is a bevel gear, and the power input gear I2422 is a conical gear. The power auxiliary shaft 22 is also provided with a power output shaft gear B1223, which is a conical gear. The power input gear I1421 meshes with the power output shaft gear B1223. The walking power transmission shaft 43 is also provided with a power transmission gear J2432, which meshes with the power input gear I2422. The power transmission gear J1431 is a bevel gear. The power input gear I1421 of the walking power input shaft 42 meshes with the power output shaft gear B1223, thereby causing the power auxiliary shaft 22 of the power transmission mechanism 2 to drive the walking power input shaft 42 to rotate. The power input gear I2422 of the walking power input shaft 42 meshes with the power transmission gear J1431, and the power output gear K1441 meshes with the power transmission gear J2432, causing the small gear to drive the large gear to rotate, thereby causing the walking power transmission shaft 43 and the walking power output shaft 44 to rotate. This can decelerate the walking power mechanism 4 before outputting power. By providing a brake slot 433 on the power transmission gear J1431, and the brake mechanism 5 being located in the brake slot 433, the brake mechanism 5 and the brake slot 433 can cooperate to limit the power transmission gear J1431, so that the gears inside the walking power mechanism 4 will not rotate after parking, preventing the vehicle from rolling away after parking.

[0073] The walking power input shaft 42 is perpendicular to the walking power transmission shaft 43, and the walking power transmission shaft 43 is parallel to the walking power output shaft 44. The walking power transmission shaft 43 and the walking power output shaft 44 are located below the walking power input shaft 42. The walking power output shaft 44 passes through the walking housing 41 and connects to the walking wheel 46. A differential 442 is installed on the walking power output shaft 44, and the differential 442 is located on both sides of the power output transmission gear K1. The differential 442 is located outside the walking housing 41. By perpendicularly aligning the walking power input shaft 42 and the walking power transmission shaft 43, and parallelly aligning the walking power transmission shaft 43 and the walking power output shaft 44, the vertical force transmitted from the power system 1 can be converted into a lateral force, thereby enabling the walking wheel 46 to move. The differential 442, located on the walking power output shaft 44 and outside the walking housing 41, allows the user to operate the differential 442 using the control mechanism 9, thus facilitating the steering of the walking power mechanism 4.

[0074] A handrail 7 is provided at the end of the power system 1 away from the harvesting rotary tillage power mechanism 3. A control mechanism 9 is provided on the handrail 7. The control mechanism 9 is connected to the power system 1, the harvesting rotary tillage power mechanism 3, the walking power mechanism 4, the braking mechanism 5, and the differential 442. The control mechanism 9 includes a hopper control mechanism 91, a harvesting rotary tillage control mechanism 92, a clutch control mechanism 93, a walking speed control mechanism 94, a reverse gear control mechanism 95, a steering control mechanism 96, and a walking brake control mechanism 97. The walking speed control mechanism 94 is controlled by a lever and a cable. The hopper control mechanism 91, the harvesting rotary tillage control mechanism 92, the clutch control mechanism 93, the reverse gear control mechanism 95, the steering control mechanism 96, and the walking brake control mechanism 97 are controlled by a lever and a cable or by a brake lever and a cable. A gathering frame 82 is provided on the side of the frame 81 away from the harvesting power transmission mechanism 2. The gathering frame 82 includes an upper support, a middle support, and a lower support. The upper support and the middle support are U-shaped, and the lower support is V-shaped. The hopper control mechanism 91 controls the opening and closing of the hopper for loading and unloading corn. The harvesting and rotary tillage control mechanism 92 controls the start and stop of the harvesting assembly 6 and the rotary tillage device 38 for harvesting and rotary tillage operations. The clutch control mechanism 93 controls the transmission and disconnection of power between the engine 11 and the power transmission mechanism 2. The reverse gear control mechanism 9 controls the walking power mechanism 4 to reverse. The steering control mechanism 96 controls the walking power mechanism 4 to easily steer. The walking brake control mechanism 97 controls the braking mechanism 5 to brake the walking power mechanism 4 internally to prevent the vehicle from rolling away when parked. The gathering frame 82, including the upper support, middle support and lower support, can gather the corn before harvesting, which helps to improve the efficiency of corn harvesting.

[0075] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A corn harvester, characterized in that: The system includes a power system (1), which is connected to a power transmission mechanism (2). The power transmission mechanism (2) includes a main power shaft (21) and a secondary power shaft (22). The main power shaft (21) and the secondary power shaft (22) are connected in a transmission manner. The main power shaft (21) is provided with a plurality of power transmission gears A. The secondary power shaft (22) is slidably provided with a plurality of travel speed change gears B. The travel speed change gears B are slidably engaged with the power transmission gears A. The main power shaft (21) is connected in a transmission manner to a harvesting rotary tillage power mechanism (3). The secondary power shaft (22) is connected in a transmission manner to a travel power mechanism (4). The walking power mechanism (4) includes a walking housing (41), a walking power transmission shaft (43) is provided inside the walking housing (41), a power transmission gear J1 (431) is provided on the walking power transmission shaft (43), and a braking mechanism (5) is provided on the walking housing (41) and the power transmission gear J1 (431).

2. The corn harvester according to claim 1, characterized in that: The braking mechanism (5) includes a brake ring (51) and a brake lever (52). The power transmission gear J1 (431) is provided with a brake slot (433), and the brake ring (51) is disposed in the brake slot (433). The brake ring (51) has an opening (511), one end of the brake rod (52) is held in the opening (511), and the other end of the brake rod (52) passes through the walking housing (41) and is rotatably mounted on the walking housing (41). The brake rod (52) has a brake surface one (521) and a brake surface two (522) arranged opposite to each other, and the brake rod (52) also has a non-brake surface three (523) and a non-brake surface four (524) arranged opposite to each other.

3. The corn harvester according to claim 2, characterized in that: The first braking surface (521) and the second braking surface (522) are outwardly convex curved surfaces, while the third non-braking surface (523) and the fourth non-braking surface (524) are planar surfaces.

4. The corn harvester according to claim 2, characterized in that: The brake lever (52) is a round rod, and the end of the brake lever (52) that is held in the opening (511) is a flat head. The brake ring (51) is an open flexible ring.

5. The corn harvester according to claim 1, characterized in that: The power transmission gear A includes a power transmission gear A1 (211) and a power transmission gear A2 (212), and the power transmission gear B includes a travel gear B1 (221) and a travel gear B2 (222). The travel gear B1 (221) is slidably engaged with the power transmission gear A1 (211), and the travel gear B2 (222) is slidably engaged with the power transmission gear A2 (212).

6. The corn harvester according to claim 5, characterized in that: The power transmission mechanism (2) also includes a reverse gear shaft (23), and a reverse gear A1 (213) is also provided on the power main shaft (21). The reverse gear shaft (23) is provided with a reverse gear C1 (231) and a reverse gear C2 (232). The reverse gear C1 (231) meshes with the reverse gear A1 (213), and the travel gear B2 (222) slides into contact with the reverse gear C2 (232).

7. The corn harvester according to claim 6, characterized in that: The reverse gear shaft (23) is arranged in parallel with the main power shaft (21) and the secondary power shaft (22).

8. The corn harvester according to claim 1, characterized in that: The harvesting rotary tillage power mechanism (3) includes a harvesting rotary tillage power input shaft (32), a first ear-picking power output roller (33), a second ear-picking power output roller (34), a rotary tillage power transmission shaft (35), and a rotary tillage power output shaft (36).

9. The corn harvester according to claim 8, characterized in that: The harvesting rotary tillage power input shaft (32) passes through one side of the housing and is connected to the power main shaft (21) for transmission. A power input gear D1 (321) is slidably arranged on the harvesting rotary tillage power input shaft (32). The ear-picking power output roller (33) is provided with ear-picking gear E1 (331) and ear-picking gear E2 (332), and the ear-picking gear E1 (331) is slidably meshed with the power input gear D1 (321); The picking power output roller 2 (34) is provided with a picking gear F1 (341), which meshes with the picking gear E2 (332); The rotary tillage power transmission shaft (35) is provided with a power transmission gear G1 (351) and a power transmission gear G2 (352). The power transmission gear G2 (352) meshes with the ear-picking gear E1 (331). The power transmission gear G1 (351) is a bevel gear. The rotary tillage power output shaft (36) is provided with a power output gear H1 (361), which meshes with the power transmission gear G1 (351). The power output gear H1 (361) is a bevel gear. One end of the rotary tillage power output shaft (36) passes through the housing and is connected to a rotary tillage device (38). The rotary tillage device (38) is located on the lower side of the harvesting rotary tillage power mechanism (3).

10. The corn harvester according to claim 9, characterized in that: The harvesting rotary tillage power input shaft (32), the first ear-picking power output roller (33), the second ear-picking power output roller (34) and the rotary tillage power transmission shaft (35) are arranged in parallel, and the rotary tillage power output shaft (36) is arranged perpendicular to the rotary tillage power transmission shaft (35); The first ear-picking power output roller (33) and the second ear-picking power output roller (34) are located on the lower side of the harvesting rotary tillage power input shaft (32). The height of the second ear-picking power output roller (34) is lower than that of the first ear-picking power output roller (33). The rotary tillage power output shaft (36) is located on the lower side of the first ear-picking power output roller (33) and the second ear-picking power output roller (34).

11. The corn harvester according to claim 10, characterized in that: The harvesting rotary tillage power mechanism (3) is connected to a harvesting assembly (6), which includes a first ear-picking roller (61) and a second ear-picking roller (62). The first ear-picking roller (61) is connected to the first ear-picking power output roller (33), and the second ear-picking roller (62) is connected to the second ear-picking power output roller (34).

12. The corn harvester according to claim 11, characterized in that: The output end of the first picking roller (61) or the second picking roller (62) is provided with a lever mechanism. The lever mechanism includes a lever power transmission mechanism (63), a lever disk (64), and several levers (65). The several levers (65) are arranged on the lever disk (64). The lever power transmission mechanism (63) consists of a turbine (631) and a worm gear (632). The worm gear (632) is connected to the output end of the first picking roller (61) or the second picking roller (62). The turbine (631) is connected to the lever disk (64).

13. The corn harvester according to claim 1 or 7, characterized in that: The walking power mechanism (4) also includes a walking power input shaft (42) and a walking power output shaft (44). The walking power input shaft (42) is connected to the walking power transmission shaft (43) and to the power auxiliary shaft (22). The walking power transmission shaft (43) is connected to the walking power output shaft (44).

14. The corn harvester according to claim 13, characterized in that: The walking power input shaft (42) is provided with a power input gear I1 (421) and a power input gear I2 (422), wherein the power input gear I1 (421) is a bevel gear and the power input gear I2 (422) is a conical gear; The power output gear B1 (223) is also provided on the power subshaft (22). The power output gear B1 (223) is a bevel gear. The power input gear I1 (421) meshes with the power output gear B1 (223). The walking power transmission shaft (43) is also provided with a power transmission gear J2 (432), the power transmission gear J1 (431) meshes with the power input gear I2 (422), and the power transmission gear J1 (431) is a bevel gear; The walking power output shaft (44) is provided with a power output gear K1 (441), which meshes with the power transmission gear J2 (432). The diameter of the power transmission gear J2 (432) is smaller than the diameter of the power output gear K1 (441).

15. The corn harvester according to claim 14, characterized in that: The walking power input shaft (42) is perpendicular to the walking power transmission shaft (43), the walking power transmission shaft (43) is parallel to the walking power output shaft (44), and the walking power transmission shaft (43) and the walking power output shaft (44) are located on the lower side of the walking power input shaft (42).

16. The corn harvester according to claim 15, characterized in that: The walking power output shaft (44) passes through the walking housing (41) and is connected to the walking wheel (46). A differential (442) is provided on the walking power output shaft (44). The differential (442) is respectively located on both sides of the power output gear K1 (441). The differential (442) is located outside the walking housing (41).

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