Backpack type free threshing device additionally arranged on corn harvester

Abstract

The utility model relates to a backpack type free threshing device additionally arranged on a corn harvester, which comprises a main vehicle, a grain collecting device, a threshing device, a sieve plate fan device, a residue cleaning device, a grain collecting device, a power device and a clutch device, a grain collecting box is arranged on the main vehicle, a bracket is fixed on the rear side of the grain collecting box and at the tail end of the main vehicle, and box plates are fixed on two sides of the bracket; in the grain collecting box, a grain collecting device is arranged at the grain unloading end of the original vehicle conveying chain of the main vehicle; a threshing device is arranged on the bracket close to the unloading end of the grain collecting device; a sieve plate fan device is arranged at the grain outlet end of the threshing device and on the bracket; a residue cleaning device is arranged below the sieve plate fan device and on the bracket; a grain collecting device is arranged at a grain outlet of the sieve plate fan device and in the bracket; a power device is arranged on one side of the lower middle portion of the support, and the clutch device and the power unit are arranged adjacently. According to the corn harvester, an original corn harvester has the threshing function, and free conversion between the direct harvesting function and the independent corn cob harvesting function can be achieved during corn harvesting operation.

Description

Technical Field

[0001] This utility model is a backpack-type free threshing device added to a corn harvester, belonging to the field of agricultural machinery technology. Background Technology

[0002] Some existing corn harvesters only have the function of harvesting and peeling corn cobs, but lack the function of directly threshing them after harvesting and peeling. As a result, a threshing machine is needed to thresh the corn cobs separately after harvesting, which reduces work efficiency. With the development of the times and the increasing aging of rural populations, corn harvesting is gradually developing towards direct corn harvesters. This makes the existing corn harvesters, which lack threshing devices, face low work efficiency. Replacing them would incur significant economic costs, and choosing to replace them with existing corn harvesters in good condition would result in substantial economic losses for agricultural machinery users. Moreover, if corn is harvested directly before it is fully mature due to weather or other factors, the corn cobs will be crushed, reducing corn yield and wasting usable grain resources. Some large corn harvesters also crush and scatter the corn cobs without collecting them, resulting in the waste of corn cobs as energy. Utility Model Content

[0003] To solve the above problems, this utility model provides a backpack-type free threshing device for corn harvesters. This device adds a corn threshing device to the original corn ear picking and threshing machine, enabling the original corn harvester to have a threshing function. During corn harvesting operations, it can freely switch between direct harvesting and separate corn cob harvesting operations as needed.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a backpack-type free threshing device added to a corn harvester, including a main vehicle, a grain collecting device, a threshing device, a screen plate fan device, a residue cleaning device, a grain collecting device, a power device, and a clutch device. The main vehicle is the original corn ear picking and threshing machine. A grain collecting box in the shape of an inverted trapezoid is set on the main vehicle. A bracket is fixed at the end of the main vehicle behind the grain collecting box. A channel steel frame is set in the bracket. Box plates are fixed on the front and rear sides of the bracket. In the grain collecting box, the grain collecting device is set at the unloading end of the original conveyor chain of the main vehicle. At the position near the unloading end of the grain collecting device, a threshing device is set on the bracket. The unloading end of the grain collecting device is located at the grain inlet of the threshing device.

[0005] At the grain discharge end of the threshing device, a screen plate fan device is installed on the support; below the screen plate fan device, a residue cleaning device is installed on the support; at the grain discharge port of the screen plate fan device, a grain collecting device is installed in the support; a power unit is installed on the lower side of the support, and a clutch device is arranged adjacent to the power unit; a tie rod is fixed at the rear of the grain collection box of the main vehicle; two annular shaft lugs are provided at the grain discharge end of the grain collection box; a horizontal pressure plate is provided on the outside of the shaft lugs; a horizontal grain collection box shaft is hinged and inserted through the two inclined beams at the grain discharge end of the grain collection box; the grain collection box shaft is also inserted through the shaft lugs; the grain collection box shaft and the shaft lugs are fixed with set screws; and upper and lower connecting pin plates are also fixed at the inclined beams at the grain discharge end of the grain collection box.

[0006] Furthermore, the grain collection device is provided at the bottom of the unloading end of the grain collection conveyor belt of the main vehicle. The grain collection device is an anti-slip conveyor belt with a push plate installed on it. A hydraulic cylinder is installed on one side of the conveyor belt, and the oil circuit of the hydraulic cylinder is connected to the main vehicle. The grain collection device is installed in the grain collection box of the main vehicle.

[0007] Furthermore, the threshing device includes a grain feeding auger and a threshing auger, which are located below the grain outlet end of the grain collecting device and are installed side by side on the box plate; a bridge connects the grain feeding auger and the threshing auger; on the end side of the main vehicle, a pulley is installed at both ends of the grain feeding auger and the threshing auger, and the two pulleys are connected by a belt; the outer ring of the grain feeding auger and the threshing auger are both hollow cylinders.

[0008] One end of the box plate is a serrated arc plate. An adjusting shaft is hinged to the inner side of the arc edge. Adjusting handles are installed at both ends of the adjusting shaft. After the locking plate and spring are installed on the surface of the adjusting handle, the spring is positioned by a pin. The locking plate is locked in the serration of the arc edge under the action of the spring. One end of the adjusting rod is installed on the surface of the adjusting shaft. The other end of the adjusting rod is hinged to one end of the adjusting short rod. The other end of the adjusting short rod is hinged to the threshing deflector plate installed inside the threshing auger.

[0009] Furthermore, the screen plate blower device includes a screen plate and a blower. The screen plate is a screen mesh with a frame. Rollers and one end of screen connecting rods are installed at the frame at both ends of the screen mesh. An eccentric shaft is hinged to the other end of the two screen connecting rods. A sprocket is installed on the eccentric shaft. After the eccentric shaft is inserted into the opening of the channel steel frame in the support, eccentric discs are fixed at both ends of the eccentric shaft. One end of each screen connecting rod is hinged to the eccentric disc on its respective side. The rollers are clamped at the edge of the channel steel frame. An anti-detachment cover is installed on the channel steel frame above the rollers. The blower is fixed to the channel steel frame of the support by binding steel coils. At the end of the main vehicle, a pulley is installed at this end of the blower shaft. The pulley on the blower is connected to the pulley on the threshing auger through a transmission belt.

[0010] Furthermore, the waste removal device includes a grain bin and a bran bin. The grain bin is an inverted triangular bin, installed on a channel steel frame and located below the sieve plate. The lower part of the grain bin has an opening and is connected to a flip door via a flip shaft. The side wall of the grain bin has a locking structure, which includes a locking rod and a locking tongue. One end of the locking rod is interference-fitted to the end of the flip shaft via a spline structure, and the other end of the locking rod has a mounting groove. A locking tongue is installed in the mounting groove. The cap of one end of the locking tongue is located outside the mounting groove, and the other end of the locking tongue passes through the mounting groove and is inserted into the corresponding positioning hole on the grain bin. Inside the mounting groove, a vertical stop post is fixed on the rod of the locking tongue. A spring passes through the rod of the locking tongue and is located between the stop post and the side wall of the mounting groove near the cap post.

[0011] The bran box is located below the blower. The bran box is a hollow box formed by bolting a screen plate onto a channel steel frame. The bottom of the bran box has a rotating door hinged to the bottom channel steel frame. On the outside of the bran box, a touch signal device is installed on the support. Inside the bran box and below the blower, a conveying auger is installed on the support. A square trough is installed between the grain inlet end of the conveying auger and the grain outlet end of the threshing auger.

[0012] Two coaxial sprockets are installed at the end of the conveyor auger. On the same side, there is a sprocket at this end of the threshing auger. The inner sprocket on the conveyor auger is connected to the sprocket on the threshing auger through a transmission chain.

[0013] Furthermore, the grain collection device includes a grain collection box, a grain lifting auger, and a blower. The grain collection box is an inverted trapezoidal box with an open top. The grain collection box is located below the grain outlet of the sieve plate. The grain collection box is installed on a channel steel frame. The grain collection box has two openings, one at the top and one at the bottom. The grain lifting auger is fixed to the side wall of the grain collection box and communicates with the lower opening of the grain collection box.

[0014] The upper opening of the auger is equipped with a receiving plate, a connecting fork, an auger locking lug, and a sliding fork. The receiving plate is hinged to the outlet at the upper end of the auger. The connecting fork is hinged to the receiving plate and is a U-shaped fork with a folded edge. A long threaded rod is provided at the closed edge of the connecting fork. After the spring passes through the threaded rod of the connecting fork, the threaded rod passes through the through hole welded to the auger locking lug on the outer wall of the auger. The spring is located between the auger locking lug and the connecting fork. A sliding fork is fixed in the hole at the bottom of the threaded rod and rests against the bottom of the pull rod.

[0015] The blower is mounted on the box plate and located on one side of the grain conveying auger. The blower's air inlet is connected to the grain collection box. The blower's air outlet is equipped with an adjusting air plate, which is hinged to the blower's air outlet end face by an L-shaped long pin. The adjusting air plate and the long pin are integrated. The locking plate is fixed to the side wall of the blower's air outlet. The pin is a pin with a stepped platform in the middle and a thread at one end. The spring is placed on the stepped platform of the pin, and then the threaded end of the pin is passed through the hole on the short side of the long pin and the nut is tightened to assemble it into a whole. At the end of the main car, a pulley is installed on this end of the blower shaft. The pulley on the blower is connected to the pulley on the grain conveying auger by a belt.

[0016] A bevel gear box is installed at the bottom of the auger. On the side below the sprocket on the eccentric shaft, a sprocket is installed at this end of the bevel gear box. The sprocket on the bevel gear box is connected to the sprocket on the eccentric shaft via a transmission chain. On the side of the sprocket on the conveying auger, another sprocket is installed on the side of the bevel gear box. This sprocket on the bevel gear box is connected to the outer sprocket on the conveying auger via a transmission chain.

[0017] Furthermore, the power unit includes an engine, a gearbox, a battery, and a fuel tank. The engine is mounted on a support plate on the side of the bracket closest to the grain bin, and the fuel tank is located below the engine. The gearbox is installed at the drive end of the engine. On the output end side of the gearbox, the output end of the gearbox is connected to the pulley on the same side of the grain feeding auger via a belt. On the engine side, a battery is mounted on the support plate. The battery is arranged adjacent to the engine and is electrically connected to the engine.

[0018] Furthermore, the clutch device includes a clutch screw, a clutch rocker arm, a clutch crank, and a clutch plate. The clutch screw is a threaded rod with a cap. After the clutch screw is fitted with a spring, it is inserted into the hinged pin hole inside the upper connecting pin plate. The spring is located between the cap and the pin. The clutch screw and the upper part of the clutch rocker arm are threadedly connected. One end of the horizontal clutch crank is inserted into the hole of the lower connecting pin plate and hinged to each other. The clutch crank is a zigzag crank. Between the two lower connecting pin plates, two plates with pin holes and openings are fixed to this end of the clutch crank. The lower part of the clutch rocker arm is inserted into the gap between these two plates and hinged to the pin. The other end of the clutch crank is fitted into the clutch plate and positioned by a retaining spring. The clutch plate is a perforated flat plate with a bushing at the upper end. The clutch crank is inserted into the bushing of the clutch plate. A throttle rod is fitted into the hole at the flat plate and a hinge pin is inserted.

[0019] Furthermore, the grain collecting device can be replaced with a grain lifting auger.

[0020] The beneficial effects of this utility model are as follows: This utility model can convey peeled corn cobs to the corn thresher via a conveying mechanism, realizing the function of a direct corn harvester. It allows the original corn harvester to have a freely selectable function, which can be used alone for harvesting corn cobs or for harvesting and threshing corn cobs, thus maximizing the functionality of the corn harvester. The grain collection bin can collect corn cobs or corn kernels separately. In the event of an unavoidable natural disaster, directly harvesting immature corn will affect the quality of the corn and reduce income. If the original function of the device is used to peel and dry the corn before threshing, this risk can be effectively reduced, income can be increased, and it is more closely adapted to the needs of operation. The double-roller parallel arrangement can shorten the length of the machine body. This device enables the corn harvester, which is on the verge of being phased out, to achieve the dual harvesting function of harvesting corn cobs and corn kernels. The collected corn cobs can be used as energy for power generation, and the collected broken kernels can be used as livestock feed. This device has the characteristics of low manufacturing cost and convenient installation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the present invention.

[0023] Figure 3 This is a schematic diagram of a grain collection device.

[0024] Figure 4 This is a schematic diagram of a threshing device.

[0025] Figure 5 This is a schematic diagram of the internal structure of the threshing device.

[0026] Figure 6 This is a schematic diagram of a sieve plate blower device.

[0027] Figure 7 This is a partially enlarged schematic diagram of the sieve plate blower device.

[0028] Figure 8 This is a schematic diagram of the residual cleaning device.

[0029] Figure 9 This is a schematic diagram of a grain bin.

[0030] Figure 10 This is a schematic diagram of the back of the residual cleaning device.

[0031] Figure 11 This is a schematic diagram of the bottom of a bran bin.

[0032] Figure 12 This is a schematic diagram of one side of the particle lifting device.

[0033] Figure 13 This is a schematic diagram of the other side of the particle lifting device.

[0034] Figure 14 This is a schematic diagram of a screw conveyor.

[0035] Figure 15 This is a schematic diagram of a partial structure of the blower.

[0036] Figure 16 This is a schematic diagram of the power unit.

[0037] Figure 17 This is a schematic diagram of the clutch mechanism.

[0038] Figure 18 This is a schematic diagram of the rear of the main vehicle.

[0039] Figure 19 This is a schematic diagram of replacing the grain collecting device with a grain lifting auger.

[0040] Figure 20 This is a schematic diagram of the locking tongue.

[0041] The diagram is labeled as follows: 1. Main vehicle; 2. Grain collection device; 201. Push plate; 3. Threshing device; 301. Grain conveying auger; 302. Threshing auger; 3021. Adjusting shaft; 3022. Adjusting lever; 3023. Adjusting short rod; 3024. Threshing auger; 3025. Adjusting wrench; 4. Screen plate and blower device; 401. Screen plate; 4011. Roller; 4012. Screen connecting rod; 4013. Eccentric shaft; 402. Blower; 5. Residue removal device; 501. Mixed grain bin; 5011. Tilting door; 5012. Tilting shaft; 5013. Locking rod; 5014. Locking tongue; 502. Bran bin; 5021. Rotating door; 5022. Square trough; 5023. Conveying auger; 6. Grain collection device. 601. Grain receiving box; 602. Grain lifting auger; 6021. Grain receiving plate; 6022. Connecting fork; 6023. Grain lifting lock lug; 6024. Sliding fork; 603. Blower; 6031. Adjusting air vane; 6032. Lock hole plate; 6033. Long pin; 6034. Pin; 6035. Nut; 7. Touch control signal device; 8. Power unit; 801. Engine; 802. Gearbox; 803. Battery; 804. Fuel tank; 9. Clutch device; 901. Clutch screw; 902. Clutch lever; 903. Clutch crank; 904. Clutch plate; 103. Pull rod; 104. Grain collecting box shaft; 105. Shaft lug; 106. Connecting pin plate; 111. Box plate; 10. Ear lifting auger. Detailed Implementation

[0042] like Figure 1As shown in Figure 20, a backpack-type free threshing device is added to a corn harvester, including a main carriage 1, a grain collection device 2, a threshing device 3, a screen plate fan device 4, a residue cleaning device 5, a grain collection device 6, a power device 8, and a clutch device 9. The main carriage 1 is the original corn ear picking and threshing machine. A grain collection box in the shape of an inverted trapezoid is set on the main carriage 1. A bracket is fixed at the end of the main carriage 1 behind the grain collection box. A channel steel frame is provided in the bracket. Box plates 111 are fixed on the front and rear sides of the bracket. The grain collection device 2 is set at the unloading end of the original conveyor chain of the main carriage 1 in the grain collection box. The threshing device 3 is set on the bracket near the unloading end of the grain collection device 2. The unloading end of the grain collection device 2 is located at the grain inlet of the threshing device 3.

[0043] At the grain discharge end of the threshing device 3, a screen fan device 4 is installed on the support; below the screen fan device 4, a residue removal device 5 is installed on the support; at the grain discharge port of the screen fan device 4, a grain collection device 6 is installed in the support; a power device 8 is installed on the lower side of the support, and a clutch device 9 is arranged adjacent to the power device 8; a pull rod 103 is fixed at the rear of the grain collection box of the main vehicle 1, and two annular lugs 105 are provided at the grain discharge end of the grain collection box. A horizontal pressure plate is provided outside the lugs 105. A horizontal grain collection box shaft 104 is hinged and inserted through the two inclined beams at the grain discharge end of the grain collection box. The grain collection box shaft 104 is also inserted inside the lugs 105. The grain collection box shaft 104 and the lugs 105 are fixed with set screws. Two upper and lower connecting pins 106 are also fixed at the inclined beams at the grain discharge end of the grain collection box.

[0044] The grain collection device 2 is provided at the bottom of the unloading end of the grain collection conveyor belt of the main vehicle 1. The grain collection device 2 is an anti-slip conveyor belt with a push plate 201 installed on it. A hydraulic cylinder is installed on one side of the conveyor belt, and the oil circuit of the hydraulic cylinder is connected to the main vehicle 1. The grain collection device 2 is installed in the grain collection box of the main vehicle 1.

[0045] The threshing device 3 includes a grain feeding auger 301 and a threshing auger 302. The grain feeding auger 301 and the threshing auger 302 are located below the grain outlet end of the grain collecting device 2. The grain feeding auger 301 and the threshing auger 302 are installed side by side on the box plate 111. There is a bridge connecting the grain feeding auger 301 and the threshing auger 302. On the end side of the main car 1, a pulley is installed at both ends of the grain feeding auger 301 and the threshing auger 302. The two pulleys are connected by a belt. The outer ring of the grain feeding auger 301 and the threshing auger 302 are both hollow cylinders.

[0046] One end of the box plate 111 is a serrated arc plate. An adjusting shaft 3021 is hinged to the inner side of the arc edge. Adjusting handles 3025 are installed at both ends of the adjusting shaft 3021. After the locking plate and spring are installed on the surface of the adjusting handles 3025, the spring is positioned by a pin. The locking plate is locked in the serration of the arc edge under the action of the spring. One end of the adjusting rod 3022 is installed on the surface of the adjusting shaft 3021. The other end of the adjusting rod 3022 is hinged to one end of the adjusting short rod 3023. The other end of the adjusting short rod 3023 is hinged to the threshing flexure plate 3024 installed inside the threshing auger 302.

[0047] The screen plate blower device 4 includes a screen plate 401 and a blower 402. The screen plate 401 is a screen with a frame. Rollers 4011 and one end of screen connecting rods 4012 are installed at the frame at both ends of the screen. The other end of the two screen connecting rods 4012 is hinged to an eccentric shaft 4013. A sprocket is installed on the eccentric shaft 4013. After the eccentric shaft 4013 is inserted into the opening of the channel steel frame in the support, eccentric discs are fixed at both ends of the eccentric shaft 4013. One end of each screen connecting rod 4012 is hinged to the eccentric disc on its respective side. The rollers 4011 are clamped at the edge of the channel steel frame. An anti-detachment cover is installed on the channel steel frame above the rollers 4011. The blower 402 is fixed to the channel steel frame of the support by binding steel coils. At the end of the main carriage 1, a pulley is installed at this end of the shaft of the blower 402. The pulley on the blower 402 is connected to the pulley on the threshing auger 302 by a transmission belt.

[0048] The waste removal device 5 includes a grain bin 501 and a bran bin 502. The grain bin 501 is an inverted triangular bin, installed on a channel steel frame and located below the sieve plate 401. The lower part of the grain bin 501 has an opening and is connected to a flip door 5011 via a flip shaft 5012. The side wall of the grain bin 501 has a locking structure, which includes a locking rod 5013 and a locking tongue 5014. One end of the locking rod 5013 is interference-fitted to the end of the flip shaft 5012 via a spline structure. At the head, the other end of the locking rod 5013 is provided with a mounting groove, in which a locking tongue 5014 is provided. The cap of one end of the locking tongue 5014 is located outside the mounting groove, and the other end of the locking tongue 5014 passes through the mounting groove and is inserted into the corresponding positioning hole on the grain box 501. Inside the mounting groove, a vertical stop post is fixed on the rod of the locking tongue 5014, and a spring passes through the rod of the locking tongue 5014 and is located between the stop post and the side wall of the mounting groove near the cap.

[0049] The bran box 502 is located below the blower 402. The bran box 502 is a hollow box formed by bolting a screen plate onto a channel steel frame. The bottom of the bran box 502 is equipped with a rotating door 5021 hinged to the bottom channel steel frame. On the outside of the bran box 502, a touch signal device 7 is mounted on the bracket. Inside the bran box 502 and below the blower 402, a conveying auger 5023 is mounted on the bracket. A square trough 5022 is installed between the grain inlet end of the conveying auger 5023 and the grain outlet end of the threshing auger 302.

[0050] Two coaxial sprockets are installed at the end of the conveying auger 5023. On the same side, a sprocket is provided at the end of the threshing auger 302. The inner sprocket on the conveying auger 5023 is connected to the sprocket on the threshing auger 302 through a transmission chain.

[0051] The grain collection device 6 includes a grain collection box 601, a grain lifting auger 602, and a blower 603. The grain collection box 601 is an inverted trapezoidal box with an open top. The grain collection box 601 is located below the grain outlet of the sieve plate 401. The grain collection box 601 is installed on a channel steel frame. The grain collection box 601 has two openings, one at the top and one at the bottom. The grain lifting auger 602 is fixed to the side wall of the grain collection box 601 and communicates with the lower opening of the grain collection box 601.

[0052] The upper opening of the grain-lifting auger 602 is equipped with a grain receiving plate 6021, a connecting fork 6022, a grain-lifting locking lug 6023, and a sliding fork 6024. The grain receiving plate 6021 is hinged to the grain outlet at the upper end of the grain-lifting auger 602. The connecting fork 6022 is hinged to the grain receiving plate 6021. The connecting fork 6022 is a U-shaped fork with a folded edge. A long threaded rod is provided at the closed edge of the connecting fork 6022. After the spring passes through the threaded rod of the connecting fork 6022, the threaded rod passes through the through hole in the grain-lifting locking lug 6023 welded to the outer wall of the grain-lifting auger 602. The spring is located between the grain-lifting locking lug 6023 and the connecting fork 6022. The sliding fork 6024 is fixed in the hole at the bottom of the threaded rod and rests against the bottom of the pull rod 103.

[0053] The blower 603 is mounted on the box plate 111 and located on one side of the grain conveying auger 301. The air inlet of the blower 603 is connected to the grain collection box 601. The air outlet of the blower 603 is provided with an adjusting air plate 6031, which is hinged to the air outlet end face of the blower 603 by an L-shaped long pin 6033. The adjusting air plate 6031 and the long pin 6033 are integrated. The locking plate 6032 is fixed to the blower 603. At the side wall of the air vent, the pin 6034 is a pin with a stepped platform in the middle and a thread at one end. The spring is put on the stepped platform of the pin 6034, and then the threaded end of the pin 6034 is passed through the hole on the short side of the long pin 6033 and the nut 6035 is tightened to assemble it into a whole. At the end of the main car 1, a pulley is installed at this end of the shaft of the blower 603. The pulley on the blower 603 is connected to the pulley on the grain conveying auger 301 by a belt.

[0054] A bevel gear box is installed at the bottom of the lifting auger 602. On the side below the sprocket on the eccentric shaft 4013, a sprocket is installed at this end of the bevel gear box. The sprocket on the bevel gear box is connected to the sprocket on the eccentric shaft 4013 via a transmission chain. On the side of the sprocket on the conveying auger 5023, another sprocket is installed on the side of the bevel gear box. This sprocket on the bevel gear box is connected to the outer sprocket on the conveying auger 5023 via a transmission chain.

[0055] The power unit 8 includes an engine 801, a gearbox 802, a battery 803, and a fuel tank 804. The engine 801 is mounted on a support plate on the side of the bracket near the grain box 501, and the fuel tank 804 is located below the engine 801. The drive end of the engine 801 is equipped with the gearbox 802. On the output end side of the gearbox 802, the output end of the gearbox 802 is connected to the pulley on the same side of the grain feeding auger 301 via a belt. On one side of the engine 801, the support plate is equipped with the battery 803, which is arranged adjacent to the engine 801 and is electrically connected to the engine 801.

[0056] The clutch device 9 includes a clutch screw 901, a clutch rocker arm 902, a clutch crank 903, and a clutch plate 904. The clutch screw 901 is a threaded rod with a cap. After the clutch screw 901 is fitted with a spring, it is inserted into the hinged pin hole inside the upper connecting pin plate 106. The spring is located between the cap and the pin. The clutch screw 901 is threadedly connected to the upper part of the clutch rocker arm 902. One end of the horizontal clutch crank 903 is inserted into the hole of the lower connecting pin plate 106 and hinged to each other. The clutch crank 903 is zigzag shaped. Between the two lower connecting pin plates 106, one end of the clutch crank 903 is fixed with two plates with pin holes and openings. The lower part of the clutch rocker arm 902 passes through the gap between the two plates and is hinged with a pin. The other end of the clutch crank 903 is fitted into the clutch plate 904 and is positioned by a snap ring. The clutch plate 904 is a perforated plate with a bushing at the upper end. The clutch crank 903 passes into the bushing of the clutch plate 904. The throttle lever is fitted into the hole at the flat plate of the clutch plate 904 and a hinge pin is inserted.

[0057] Depending on the model of the main vehicle 1, the grain collection device 2 can be replaced with the ear-lifting auger 10.

[0058] During operation, the drive ends of the engine 801 and gearbox 802 are connected to the pulley at one end of the grain feeding auger 301 on the same side via belts. The engine 801 and gearbox 802 drive the grain feeding auger 301 to rotate via belt drive. The pulley at the other end of the grain feeding auger 301 is connected to the pulley at one end of the threshing auger 302 and the pulley at one end of the blower 603 on the same side via two belts. The grain feeding auger 301 drives the threshing auger 302 and the power input shaft of the blower 603 to rotate via belt drive. The pulley at one end of the threshing auger 302 is then connected to the pulley on the same side of the blower 402 via belt drive. The threshing auger 302 drives the fan blade shaft in the blower 402 to rotate via belt drive. The sprocket at the other end is connected to the inner sprocket at the end of the conveying auger 5023 via a transmission chain. The conveying auger 5023 is driven to rotate by the chain drive at the threshing auger 302 end. The outer sprocket at the end of the conveying auger 5023 is connected to the sprocket on the same side of the bevel gear box below the lifting auger 602 via a transmission chain. The conveying auger 5023 drives the bevel gear box to rotate the spiral roller in the lifting auger 602 via the chain drive. At the same time, the sprocket on the other side of the bevel gear box drives the sprocket on the eccentric shaft 4013 to rotate via the transmission chain. The eccentric discs at both ends of the eccentric shaft 4013 drive the screen plate 401 to reciprocate under the action of the roller 4011 via the screen connecting rod 4012. The bevel gear box is a structure in which three bevel gears mesh with each other.

[0059] During operation, the hydraulic cylinder drives the grain collecting device 2 to align with the grain outlet on the grain collecting box. The main vehicle's grain collecting conveyor belt transports the peeled corn cobs through the grain outlet to the grain collecting device 2 inside the grain collecting box. The grain collecting device 2 then transports the corn cobs to the feeding auger 301. The feeding auger 301 then transports the corn cobs to the threshing auger 302, where the threshing auger 302 uses rollers with guide vanes and spirally arranged kneading blocks to thresh the corn cobs. The threshed corn kernels fall into the reciprocating screen plate 401. After screening, the intact corn kernels fall through the outlet of the screen plate 401 into the grain collection box 601. The nut 6035 drives the long pin 6033 and the adjusting air plate 6031 to insert the pin 6034 into the hole on the locking plate 6032, thereby adjusting the air volume of the blower 603. With the cooperation of the blower 603, the blower 603 blows out the dust in the corn kernels. The corn kernels in the collection box 601 are transported to the top by the lifting auger 602. The corn kernels are sent out from the outlet of the lifting auger 602 and fall into the grain collection box through the receiving plate 6021. The weight of the corn kernels will press down on the receiving plate 6021. The pressed receiving plate 6021 will compress the spring. After the grain delivery is completed, the spring will reset the receiving plate 6021.

[0060] After threshing, the corn cobs are conveyed to the outlet by the threshing auger 302, and then enter the conveying auger 5023 through the square trough 2022. The conveying auger 5023 then conveys the corn cobs to the bran bin 502. When the weight of the threshed corn cobs in the bran bin 502 is too heavy, the touch signal device 7 will be triggered, and the lower flap 5021 will open to release the threshed corn cobs.

[0061] Just as the corn kernels are about to enter the sieve plate 401, the blower 402 blows air towards the sieve plate 401. The lighter broken corn kernels will be blown away by the air and enter the grain bin 501, while the whole corn kernels will enter the grain collection bin 601 through the sieve plate 401. After the grain bin 501 is full, pull out the locking tongue 5014 and turn the locking rod 5013. The locking rod 5013 drives the flip door 5011 to rotate and open, releasing the broken corn kernels in the grain bin 501.

[0062] Rotating the adjusting wrench 3025 causes the adjusting shaft 3021 to rotate, which in turn drives the adjusting rod 3022 to move. The adjusting rod 3022 is used to adjust the angle of the threshing deflector 3024, thereby adjusting the gap between the threshing drum and the threshing shaft roller to make threshing more thorough. The adjusting wrench 3025 is positioned on the arc plate by the pin and locking plate.

[0063] Engine 801 provides power to the entire device. When the grain collection box shaft 104 drives the shaft lug 105 to rotate, the shaft lug 105 presses down the clutch screw 901 and positions it. The clutch screw 901 drives the clutch rocker 902 to move, and the clutch rocker 902 drives the clutch crank 903 to rotate, producing a large adjustment. The rotation of the clutch crank 903 causes the throttle lever to move, reducing the throttle, so that the grain collection box can discharge grain without the need for high throttle operation. When the shaft lug 105 is lifted, the clutch screw 901 is automatically lifted, and the throttle is increased again, returning to the working state. If the main vehicle 1 has sufficient power, the power of the main vehicle 1 can be used to drive the threshing device, which reduces the vehicle weight and lowers the economic cost.

Claims

1. A backpack-type free threshing device added to a corn harvester, characterized in that: The system includes a main vehicle (1), a grain collection device (2), a threshing device (3), a screen fan device (4), a residue removal device (5), a grain collection device (6), a power device (8), and a clutch device (9). The main vehicle (1) is the original corn ear picking and threshing machine. The main vehicle (1) is equipped with a grain collection box in the shape of an inverted trapezoid. At the rear of the grain collection box, a support is fixed at the end of the main vehicle (1). The support has a channel steel frame, and box plates (111) are fixed on both the front and rear sides of the support. In the grain collection box, the grain collection device (2) is installed at the unloading end of the original conveyor chain of the main vehicle (1). At the position near the unloading end of the grain collection device (2), a threshing device (3) is installed on the support. The unloading end of the grain collection device (2) is located at the grain inlet of the threshing device (3). At the grain outlet of the threshing device (3), a screen fan device (4) is installed on the support; below the screen fan device (4), a residue removal device (5) is installed on the support; at the grain outlet of the screen fan device (4), a grain collecting device (6) is installed in the support; a power device (8) is installed on the lower side of the support, and a clutch device (9) is arranged adjacent to the power device (8); a pull rod (1) is fixed at the rear of the grain collection box of the main vehicle (1). 03) The unloading end of the grain collection box is provided with two circular lugs (105). A horizontal pressure plate is provided on the outside of the lugs (105). A horizontal grain collection box shaft (104) is hinged and inserted at the two inclined beams at the unloading end of the grain collection box. The grain collection box shaft (104) is also inserted inside the lugs (105). The grain collection box shaft (104) and the lugs (105) are fixed with set screws. Two connecting pins (106) are also fixed at the inclined beams at the unloading end of the grain collection box.

2. The backpack-type free threshing device added to a corn harvester according to claim 1, characterized in that: The grain collection device (2) is provided at the bottom of the unloading end of the grain collection conveyor belt of the main vehicle (1). The grain collection device (2) is an anti-slip conveyor belt. A push plate (201) is installed on the conveyor belt. A hydraulic cylinder is installed on one side of the conveyor belt. The oil circuit of the hydraulic cylinder is connected to the main vehicle (1). The grain collection device (2) is installed in the grain collection box of the main vehicle (1).

3. The backpack-type free threshing device added to a corn harvester according to claim 1, characterized in that: The threshing device (3) includes a grain feeding auger (301) and a threshing auger (302). The grain feeding auger (301) and the threshing auger (302) are located below the grain outlet of the grain collecting device (2). The grain feeding auger (301) and the threshing auger (302) are installed side by side on the box plate (111). There is a bridge connecting the grain feeding auger (301) and the threshing auger (302). On the end side of the main vehicle (1), there is a pulley at both ends of the grain feeding auger (301) and the threshing auger (302). The two pulleys are connected by a belt. The outer ring of the grain feeding auger (301) and the threshing auger (302) are both hollow cylinders. One end of the box plate (111) is a serrated arc plate. An adjusting shaft (3021) is hinged to the inner side of the arc edge. Adjusting handles (3025) are installed at both ends of the adjusting shaft (3021). After the locking plate and spring are installed on the surface of the adjusting handle (3025), the spring is positioned by a pin. The locking plate is locked in the serration of the arc edge under the action of the spring. One end of the adjusting rod (3022) is installed on the surface of the adjusting shaft (3021). The other end of the adjusting rod (3022) is hinged to one end of the adjusting short rod (3023). The other end of the adjusting short rod (3023) is hinged to the threshing flexure plate (3024) installed inside the threshing auger (302).

4. The backpack-type free threshing device added to a corn harvester according to claim 1, characterized in that: The screen plate fan device (4) includes a screen plate (401) and a fan (402). The screen plate (401) is a screen with a frame. Rollers (4011) and one end of screen connecting rods (4012) are installed at the frame at both ends of the screen. An eccentric shaft (4013) is hinged to the other end of the two screen connecting rods (4012). A sprocket is installed on the eccentric shaft (4013). After the eccentric shaft (4013) is inserted into the opening of the channel steel frame in the bracket, it is fixed at both ends. There is an eccentric disc, and one end of the screen connecting rod (4012) is hinged to the eccentric disc on its respective side; the roller (4011) is clamped at the edge of the channel steel frame, and an anti-detachment cover is installed on the channel steel frame above the roller (4011); the blower (402) is fixed to the channel steel frame of the support by binding steel coils, and a pulley is installed at the end of the main car (1) on this end of the blower (402) shaft, and the pulley on the blower (402) is connected to the pulley on the threshing auger (302) by a transmission belt.

5. The backpack-type free threshing device added to a corn harvester according to claim 1, characterized in that: The waste disposal device (5) includes a grain box (501) and a bran box (502). The grain box (501) is an inverted triangular box. The grain box (501) is installed on a channel steel frame and located below the sieve plate (401). The lower part of the grain box (501) has an open opening and is connected to a flip door (5011) through a flip shaft (5012). The side wall of the grain box (501) is provided with a locking structure, which includes a locking rod (5013) and a locking tongue (5014). One end of the locking rod (5013) is interference-fitted to the end of the flip shaft (5012) through a spline structure. The other end of the locking rod (5013) is provided with an installation groove. A locking tongue (5014) is provided in the installation groove. The cap of one end of the locking tongue (5014) is located outside the installation groove. The other end of the locking tongue (5014) passes through the installation groove and is inserted into the grain box (501). In the corresponding positioning hole; inside the mounting groove, a vertical stop post is fixed on the rod of the locking tongue (5014), and the spring passes through the rod of the locking tongue (5014) and is located between the stop post and the side wall of the mounting groove near the cap; the bran box (502) is located below the blower (402), and the bran box (502) is a hollow box formed by the screen plate being bolted to the channel steel frame. The bottom of the bran box (502) is provided with a rotating door (5021) hinged to the bottom channel steel frame; outside the bran box (502), a touch signal device (7) is installed on the bracket; inside the bran box (502) and below the blower (402), a conveying auger (5023) is installed on the bracket, and a square trough (5022) is installed between the grain inlet end of the conveying auger (5023) and the grain outlet end of the threshing auger (302); Two coaxial sprockets are installed at the end of the conveying auger (5023). On the same side, a sprocket is provided at the end of the threshing auger (302). The inner sprocket on the conveying auger (5023) is connected to the sprocket on the threshing auger (302) through a transmission chain.

6. The backpack-type free threshing device added to a corn harvester according to claim 1, characterized in that: The grain collection device (6) includes a grain collection box (601), a grain lifting auger (602), and a blower (603). The grain collection box (601) is an inverted trapezoidal box with an open top. The grain collection box (601) is located below the grain outlet of the sieve plate (401). The grain collection box (601) is installed on a channel steel frame. The grain collection box (601) has two openings, one at the top and one at the bottom. The grain lifting auger (602) is fixed on the side wall of the grain collection box (601) and communicates with the lower opening of the grain collection box (601). The upper opening of the grain-raising auger (602) is equipped with a grain receiving plate (6021), a connecting fork (6022), a grain-raising lock lug (6023), and a sliding fork (6024). The grain receiving plate (6021) is hinged to the grain outlet at the upper end of the grain-raising auger (602). The connecting fork (6022) is hinged to the grain receiving plate (6021). The connecting fork (6022) is a U-shaped fork with a folded edge. A long threaded rod is provided at the closed edge of the connecting fork (6022). After the spring passes through the threaded rod of the connecting fork (6022), the threaded rod passes through the through hole in the grain-raising lock lug (6023) welded to the outer wall of the grain-raising auger (6022). The spring is located between the grain-raising lock lug (6023) and the connecting fork (6022). The sliding fork (6024) is fixed in the hole at the bottom of the threaded rod and rests against the bottom of the pull rod (103). The blower (603) is installed on the box plate (111) and located on one side of the grain conveying auger (301). The air inlet of the blower (603) is connected to the grain receiving box (601). The air outlet of the blower (603) is provided with an adjusting air plate (6031). The adjusting air plate (6031) is hinged to the air outlet end face of the blower (603) by an L-shaped long pin (6033). The adjusting air plate (6031) and the long pin (6033) are integrated. The locking plate (6032) is fixed to the blower ( 603) At the side wall of the air outlet, the pin (6034) is a pin with a stepped platform in the middle and a thread at one end. The spring is put into the stepped platform of the pin (6034), and the threaded end of the pin (6034) is passed through the hole on the short side of the long pin (6033) and the nut (6035) is tightened to assemble it into a whole; at the end of the main car (1), a pulley is installed at this end of the shaft of the blower (603). The pulley on the blower (603) is connected to the pulley on the grain conveying auger (301) by a belt; A bevel gear box is installed at the bottom of the lifting auger (602). On the side below the sprocket on the eccentric shaft (4013), a sprocket is installed at this end of the bevel gear box. The sprocket on the bevel gear box is connected to the sprocket on the eccentric shaft (4013) via a transmission chain. On the side of the sprocket on the conveying auger (5023), another sprocket is installed on the side of the bevel gear box. This sprocket on the bevel gear box is connected to the outer sprocket on the conveying auger (5023) via a transmission chain.

7. The backpack-type free threshing device added to a corn harvester according to claim 1, characterized in that: The power unit (8) includes an engine (801), a gearbox (802), a battery (803), and a fuel tank (804). The engine (801) is mounted on a support plate on the side of the bracket near the grain box (501), and the fuel tank (804) is located below the engine (801). The drive end of the engine (801) is equipped with a gearbox (802). On the output end side of the gearbox (802), the output end of the gearbox (802) is connected to the pulley on the same side of the grain feeding auger (301) by a belt. On one side of the engine (801), a support plate is equipped with a battery (803). The battery (803) is arranged adjacent to the engine (801) and is electrically connected to the engine (801).

8. The backpack-type free threshing device added to a corn harvester according to claim 1, characterized in that: The clutch device (9) includes a clutch screw (901), a clutch rocker (902), a clutch crank (903), and a clutch plate (904). The clutch screw (901) is a threaded rod with a cap. After the clutch screw (901) is fitted with a spring, it is inserted into the hinged pin hole inside the upper connecting pin plate (106). The spring is located between the cap and the pin. The clutch screw (901) is threadedly connected to the upper part of the clutch rocker (902). One end of the horizontal clutch crank (903) is inserted into the hole of the lower connecting pin plate (106) and hinged to each other. The clutch crank (903) is... A zigzag crank handle; between the two lower connecting pin plates (106) at the opening, one end of the clutch crank handle (903) is fixed with two plates with pin holes and openings, the lower part of the clutch rocker arm (902) passes through the gap between the two plates and is hinged by a pin shaft; the other end of the clutch crank handle (903) is fitted into the clutch plate (904) and positioned by a snap ring; the clutch plate (904) is a perforated plate, the upper end of the plate is provided with a bushing, the clutch crank handle (903) passes into the bushing of the clutch plate (904), the hole at the plate of the clutch plate (904) is fitted with a throttle rod and a hinge pin is inserted.

9. The backpack-type free threshing device added to a corn harvester according to claim 1, characterized in that: The grain collection device (2) can be replaced by a grain lifting auger (10).

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