CN109661889B - A cassava combine harvester - Google Patents

Abstract

The invention discloses a cassava combine harvester which comprises an excavating device, a vibrating conveying device, a discharging device and a transmission mechanism, wherein the excavating device, the vibrating conveying device and the discharging device are sequentially arranged on a frame from front to back, a rotary land wheel is arranged at the bottom of the frame, a traction frame is arranged at the front end of the frame, the transmission mechanism is arranged on the upper side of the traction frame, and a cutting disc is further arranged on the frame on the front side of the excavating device. The automatic soil and weed cutting machine has the advantages that soil and weeds are automatically cut, the soil and cassava are fully separated by vibration in the conveying process after loosening, the cassava is automatically unloaded, time and labor are saved, and the working efficiency is greatly improved.

Description

A cassava combine harvester

technical field

The invention relates to an agricultural machine, in particular to a cassava combine harvester.

Background technique

The planting scale of cassava in my country continues to expand, but the level of mechanized harvesting is very low, most of which rely on manual work, and a few areas have realized semi-mechanized cassava harvesting, which is labor-intensive and production costs are high. Aiming at the low level of mechanization of cassava in my country, time-consuming and labor-intensive manual harvesting, and low efficiency, a cassava harvester with high working efficiency is designed.

Chinese patent 201610419084.1 discloses a cassava harvester. The front end of the front longitudinal beam is provided with a forced conveying wheel. The forced conveying wheel is connected to the motor through the clamping belt and the pulley. The motor is connected to the hydraulic motor through the hydraulic pump. A potato cutter is installed, and a digging shovel is installed under both sides of the forced conveying wheel. The digging shovel is connected to the hydraulic cylinder through the depth-limiting wheel, and the hydraulic cylinder is fixed to the machine body. The main transmission shaft and the transmission are connected with the potato piece transportation device, the potato piece transportation device is connected with the potato piece box, the driver's cab is arranged on the front side of the potato piece box, and the crawler chassis is arranged at the bottom of the frame. The invention can complete cassava excavation, clamping Holding transportation, potato stem separation and soil removal and collection; the holding and conveying mechanism can effectively reduce the excavation resistance and reduce the power requirements of the machine; the harvesting process consumes less labor and significantly improves production efficiency. The disadvantages are: 1. When the digging shovel is working, the resistance it receives is large, and the soil cannot be well loosened; 2. In addition, the cassava block conveying device only directly transports the cassava with soil into the potato block box; 3. The cassava collection box cannot activities, after the cassava harvester finishes working, it still needs to manually remove the cassava from the collection box, and there is no automatic unloading function; 4. The clamping function can only adapt to sandy loam, and for the characteristics of southern red soil clay that is easy to harden, the clamping process Potato breakage is easy to occur in the process, and the loss rate is high, which reduces the practicability of the machine.

Contents of the invention

In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a cassava combine harvester, which has the functions of automatically cutting the soil, digging after loosening, vibrating during the conveying process to fully separate the soil from the cassava, and automatically unloading the cassava, etc. Save time and effort, greatly improve work efficiency.

Technical scheme of the present invention is:

A cassava combine harvester, comprising excavating device, vibrating conveying device, unloading device and transmission mechanism, described excavating device, vibrating conveying device and unloading device are installed on the frame successively from front to back, and the bottom of the frame is provided with The ground wheel is rotated, the front end is provided with a traction frame, the upper side of the traction frame is provided with a transmission mechanism, and a cutting disc is also provided on the front frame of the excavating device.

The excavating device is composed of an excavating shovel, a transition plate, a swing lever and an eccentric wheel. Mounting ears are respectively arranged on both sides of the excavating shovel. The swing shaft is connected to one end of the swing rod, and the other end of the swing rod is provided with an eccentric sleeve, the eccentric sleeve is connected to the rotating shaft through the eccentric wheel, and the rotating shaft is connected to the frame. The excavating shovel is 65Mn quenched and tempered It is made of steel plate material, and its outer side is an inverted w-shaped structure, and its inner side is provided with a transition plate, which faces the vibrating conveying device.

The vibrating conveying device includes a conveying screen, a primary conveying frame, a secondary conveying frame, a hydraulic cylinder, a conveying screen support shaft, a primary conveying vibration shaft, a secondary conveying rotating shaft and a tertiary conveying rotating shaft. The supporting shaft of the conveying screen and the first-stage conveying vibration shaft are respectively installed on the first-stage conveying frame of the frame at intervals from the front to the rear through the bearing, the first-stage conveying frame is installed on the front of the frame, and the second-stage conveying frame passes through the second The first-stage conveying rotating shaft is connected to the rear end of the first-stage conveying frame, and the second-stage conveying rotating shaft and the third-stage conveying rotating shaft are respectively installed on the front and rear positions of the second-stage conveying frame. On the first-stage conveying vibration shaft, the second-stage conveying rotating shaft and the third-stage conveying rotating shaft, the edges of both sides of the conveying screen rest on the rolling cylinder inside the frame, and the third-stage conveying rotating shaft is evenly equipped with driving Plum blossom rubber wheel, the driving plum blossom rubber wheel is in contact with the horizontal mesh rod of the conveying screen, and the driving plum blossom rubber wheel drives the conveying screen to run. The two ends of the primary conveying vibration shaft are respectively equipped with a fourth transmission sprocket and a fourth transmission chain Oval vibrating wheels are evenly installed on the first-stage conveying vibration shaft inside the wheel, and the first-stage conveying vibrating shaft contacts the conveying screen through the oval-shaped vibrating wheel. Connection, the other end of the hydraulic cylinder is connected with the bracket on the upper side of the frame.

The unloading device includes a cassava loading and unloading bucket, a lifting hydraulic cylinder, and a hopper support frame. One side of the cassava loading and unloading bucket is provided with a vertical wall, and the two sides of the vertical wall are respectively equipped with a lifting hydraulic cylinder. One end of the lifting hydraulic cylinder It is movably connected with the vertical wall, and the other end is connected with the hopper support frame. The hopper support frame is arranged on one side of the frame, the cassava loading and unloading bucket bracket is placed on the frame, and the vertical wall of the cassava loading and unloading bucket and the hopper support frame are attached to each other , the top of the vertical wall is connected with the hopper support frame through the horizontal shaft.

The transmission mechanism includes a transmission universal joint, a universal joint transmission shaft, a first transmission chain, a second transmission chain, a third transmission chain, a first transmission sprocket, a second transmission gear, a third transmission sprocket, The fourth transmission sprocket, the fifth transmission sprocket, the sixth transmission sprocket, the seventh transmission sprocket, the eighth transmission sprocket and the ninth transmission gear, the first transmission sprocket and the ninth transmission gear are respectively Installed on both ends of the universal joint transmission shaft, the second transmission gear is installed on the rotating shaft, the third transmission sprocket is installed on the shaft of the frame, the fourth transmission sprocket and the fifth transmission sprocket are respectively installed on a The sixth transmission sprocket and the seventh transmission sprocket are respectively installed on the two ends of the second-stage transmission vibration shaft, and the eighth transmission sprocket is installed on both ends of the third-stage transmission rotation shaft. The first transmission The chain is connected to the first transmission sprocket, the third transmission sprocket, and the fourth transmission sprocket, the ninth transmission gear is meshed with the second transmission gear, and the second transmission chain is connected to the fifth transmission sprocket, the sixth transmission chain On the wheel, the third transmission chain is connected to the seventh transmission sprocket and the eighth transmission sprocket. The transmission universal joint is connected to the transmission shaft of the universal joint through the gearbox, and the transmission universal joint is connected to the power unit of the tractor. connection, the tractor power unit drives the transmission universal joint to rotate, the transmission universal joint drives the universal joint transmission shaft to rotate through the gearbox, the universal joint transmission shaft drives the second transmission gear to rotate through the ninth transmission gear, and then drives the eccentric wheel to run, At the same time, the universal joint transmission shaft drives the first transmission chain through the first transmission sprocket, and then drives the second transmission chain and the third transmission chain to run step by step. The first transmission chain, the second transmission chain and the third transmission chain respectively drive The corresponding device operates.

The transmission chain, the transmission sprocket and the transmission gear are all provided with two sets, which are installed on both sides of the frame respectively.

The beneficial effects of the present invention are:

1. The working method of the digging shovel is to continuously vibrate while digging to reduce the digging resistance, loosen the soil, and facilitate the subsequent transportation and harvesting of cassava.

2. The working method of the cassava conveyor chain row is vibration, screening, and transportation, and the cassava mixed with a large amount of soil is separated from the soil and cassava through different vibrations on the conveyor chain row, and gradually separated through two-stage screening Clean, leaving only the cassava and finally transported to the cassava loading and unloading bucket.

3. The cassava loading and unloading bucket is automatically unloaded, which reduces manual cassava picking and loading operations.

4. The present invention fully realizes the mechanized assembly line operation, and realizes harvest operations such as automatic excavation of cassava in the field, automatic separation and transportation of mud and potatoes, automatic unloading and loading.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is an explosion diagram of the present invention;

Fig. 3 is the transmission mechanism schematic diagram of the present invention;

Fig. 4 is a side view of the present invention;

Fig. 5 is an exploded view of the conveying device and the swing rod of the present invention;

Fig. 6 is a partial enlarged view of A in Fig. 5;

Fig. 7 is a schematic diagram of the drive gear installation structure of the present invention;

Fig. 8 is a schematic diagram of the installation structure of the first transmission chain of the present invention.

In the figure: 1 frame, 2 rotating ground wheel, 3 traction frame, 4 digging shovel, 5 transition plate, 6 swing lever, 7 eccentric wheel, 8 movable shaft, 9 swing shaft, 10 rotating shaft, 11 conveying screen, 12 a Level conveying frame, 13 secondary conveying frame, 14 hydraulic cylinder, 15 conveying screen support shaft, 16 primary conveying vibration shaft, 17 secondary conveying rotating shaft, 18 tertiary conveying rotating shaft, 19 driving plum flower rubber wheel, 20 vibrating wheel . 31 second transmission chain, 32 third transmission chain, 33 first transmission sprocket, 34 second transmission gear, 35 third transmission sprocket, 36 fourth transmission sprocket, 37 fifth transmission sprocket, 38 sixth transmission Sprocket wheel, 39 the seventh transmission sprockets, 40 the eighth transmission sprockets, 41 the ninth transmission gears, 42 gearboxes, 43 cutting discs.

Detailed ways

The present invention will be further described in detail in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 8, a cassava combine harvester includes an excavating device, a vibrating conveying device, a discharge device and a transmission mechanism. On the frame 1, the bottom of the frame 1 is provided with a rotating ground wheel 2, the front end is provided with a traction frame 3, the upper side of the traction frame 3 is provided with a transmission mechanism, and the front frame 1 of the excavating device is also provided with a cutting disc 43 .

As shown in Figures 1 to 5, the excavating device is composed of an excavating shovel 4, a transition plate 5, a swing rod 6, and an eccentric wheel 7. The two sides of the excavating shovel 4 are respectively provided with mounting ears, and the middle of the mounting ears Installed on the frame 1 through the movable shaft 8, the upper part of the mounting ear is connected with one end of the swing rod 6 through the swing shaft 9, and the other end of the swing rod 6 is provided with an eccentric sleeve, and the eccentric sleeve is connected with the rotating shaft 10 through the eccentric wheel 7 , the rotating shaft 10 is connected on the frame 1, and the eccentric wheel 7 drives the digging shovel 4 to vibrate continuously through the swing rod 6, and goes deep into the root of cassava to carry out vibratory excavation to achieve the best digging effect. The described digging shovel 4 is 65Mn It is made of quenched and tempered steel plate material, and its outer side is an inverted w-shaped structure, which can be used for continuous excavation of highly viscous and easy-to-harden soil, reducing excavation resistance, etc., and its inner side is provided with a transition plate 5 Towards the vibrating conveying device, the excavating shovel 4 enters the excavated cassava through the transition plate 5 into the vibrating conveying device.

As shown in Figures 1 to 7, the vibrating conveying device includes a conveying screen 11, a primary conveying frame 12, a secondary conveying frame 13, a hydraulic cylinder 14, a conveying screen support shaft 15, a primary conveying vibration shaft 16, The first-stage conveying rotating shaft 17 and the third-stage conveying rotating shaft 18, the conveying screen support shaft 15 and the first-stage conveying vibration shaft 16 are respectively installed on the first-stage conveying frame 12 of the frame 1 at intervals from the front to the rear through bearings, The primary conveying frame 12 is installed on the front part of the frame 1, and the secondary conveying frame 13 is connected to the rear end of the primary conveying frame 12 through the secondary conveying rotating shaft 17. The secondary conveying rotating shaft 17 and the tertiary conveying rotating shaft The shafts 18 are respectively mounted on the front and rear positions of the secondary conveying frame 13, and the conveying screen 11 is wound around the conveying screen support shaft 15, the primary conveying vibration shaft 16, the secondary conveying rotating shaft 17 and the tertiary conveying rotating shaft 18 On the top, the two side edges of the conveying screen 11 rest on the rolling cylinder inside the frame 1, and the three-stage conveying rotating shaft 18 is evenly equipped with driving plum blossom rubber wheels 19, and the driving plum blossom rubber wheels 19 and the conveying screen 11 The horizontal net rods contact with each other, and the driving plum blossom rubber wheel 19 drives the conveying screen 11 to run. The two ends of the first-stage conveying vibration shaft 16 are respectively equipped with a fourth transmission sprocket 36, and the first-stage conveying on the inside of the fourth transmission sprocket 36 An oval vibrating wheel 20 is evenly installed on the vibrating shaft 16, and the primary conveying vibrating shaft 16 is in contact with the conveying screen 11 through the oval vibrating wheel 20. 11 produces the effect of vibration conveying, the cassava that enters on the conveying sieve 11 from the transition plate 5 is under the vibrating conveying of the conveying sieve 11, shakes the earth adhering to the cassava and falls from the mesh gap of the conveying sieve 11, thereby The soil is removed from the cassava to achieve the effect of cleaning the cassava. The upper cross bar 21 of the secondary conveying frame 13 is connected with one end of the hydraulic cylinder 14, and the other end of the hydraulic cylinder 14 is connected with the support on the upper side of the frame 1. 22 connections, the secondary conveying frame 13 takes the secondary conveying rotating shaft 17 as the axis, can drive the rear end of the secondary conveying frame 13 to rise, and after the secondary conveying frame 13 rear end folds and rises, it is the cassava loading and unloading bucket 23 Unloading to make room.

As shown in Figures 1, 2, 3, 4 and 5, the described unloading device includes a cassava loading and unloading bucket 23, a lifting hydraulic cylinder 24 and a hopper support frame 25, and one side of the cassava loading and unloading bucket 23 is provided with a vertical wall 26. Lifting hydraulic cylinders 24 are respectively provided on both sides of the vertical wall 26. One end of the lifting hydraulic cylinder 24 is movably connected to the vertical wall 26, and the other end is connected to the hopper support frame 25. The hopper support frame 25 is set on the frame 1 On one side, the cassava loading and unloading bucket 23 is supported on the frame 1, the vertical wall 26 of the cassava loading and unloading bucket 23 is close to the hopper support frame 25, and the top of the vertical wall 26 is connected with the hopper support frame 25 through a horizontal shaft 27. When the cassava loading and unloading bucket 23 is raised by the cylinder 24 to unload, the cassava loading and unloading bucket 23 is supported by the horizontal axis 27, and the raised cassava loading and unloading bucket 23 is discharged from the top of the vertical wall 26, so that the cassava raw materials can be poured into the cassava transport vehicle. in the compartment.

As shown in Figures 1, 2, 3, 4, 5 and 8, the transmission mechanism includes a transmission universal joint 28, a universal joint transmission shaft 29, a first transmission chain 30, a second transmission chain 31, a third transmission chain Transmission chain 32, first transmission sprocket 33, second transmission gear 34, third transmission sprocket 35, fourth transmission sprocket 36, fifth transmission sprocket 37, sixth transmission sprocket 38, seventh transmission sprocket 39. The eighth transmission sprocket 40 and the ninth transmission gear 41, the first transmission sprocket 33 and the ninth transmission gear 41 are respectively installed on both ends of the universal joint transmission shaft 29, and the second transmission gear 34 is installed On the rotating shaft 10, the third transmission sprocket 35 is installed on the shaft of the frame 1, the fourth transmission sprocket 36, and the fifth transmission sprocket 37 are respectively installed at both ends of the primary conveying vibration shaft 16, and the sixth transmission sprocket The sprocket 38 and the seventh transmission sprocket 39 are respectively installed on the secondary transmission rotating shaft 17, the eighth transmission sprocket 40 is installed on the two ends of the third transmission rotation shaft 18, and the first transmission chain 30 is connected to the On a drive sprocket 33, the 3rd drive sprocket 35, the 4th drive sprocket 36, the 9th drive gear 41 is meshed with the 2nd drive gear 34, and the 2nd drive chain 31 is connected on the 5th drive sprocket 37, the 4th drive sprocket On the six transmission sprockets 38, the third transmission chain 32 is connected on the seventh transmission sprocket 39 and the eighth transmission sprocket 40, and the transmission universal joint 28 is connected with the universal joint drive shaft 29 through a gearbox 42, The transmission universal joint 28 is connected with the power unit of the tractor, the tractor power unit drives the transmission universal joint 28 to rotate, the transmission universal joint 28 drives the universal joint transmission shaft 29 to rotate through the gearbox 42, and the universal joint transmission shaft 29 passes through the first The nine transmission gear 41 drives the second transmission gear 34 to rotate, and then drives the eccentric wheel 7 to run, while the universal joint drive shaft 29 respectively drives the first transmission chain 30 through the first transmission sprocket 33, and then drives the second transmission chain 31 step by step 1. The third transmission chain 32 runs, and the first transmission chain 30, the second transmission chain 31, and the third transmission chain 32 respectively drive corresponding devices to run.

Described transmission chain, transmission sprocket wheel and transmission gear are all provided with two sets, are installed in the both sides of frame 1 respectively.

working principle:

The tractor is connected to the traction frame 3 at the front end of the frame 1 through the side tie rod at the rear end, the power device of the tractor is transmitted to the gearbox 42 through the transmission universal joint 28, and the excavating shovel 4 is driven by the gearbox 42 to reduce resistance through vibration. The cassava is excavated, and the excavated cassava passes through the cassava transition plate 5 and is transported to the conveying screen 11. Under the action of the first-stage conveying vibration shaft 16, the cassava on the conveying screen 11 is vibrated to separate the soil and potato. The separated cassava is transported to the cassava loading and unloading bucket 23. After the cassava loading and unloading bucket 23 is full, the hydraulic cylinder 14 is driven by the hydraulic device of the tractor, and the rear end of the secondary conveying frame 13 is raised to lift the cassava loading and unloading bucket 23 to unload the cassava. The cassava is made to slide into the compartment of the cassava transport vehicle to complete the cassava harvesting process.

In view of the easy hardening of southern red soil, the cutting disc 43 penetrates into the soil by its own weight, and longitudinally cuts the soil when the tractor is pulled forward. Excavation, simultaneously cutting disc 43 has concurrently the effect of cutting grass and reducing forward resistance.

The above is described by way of example, but the present invention is not limited to the specific forms disclosed above. It should be understood that all modifications or replacements of the technical solution of the present invention by those skilled in the art will not depart from the spirit and protection scope of the technical solution of the present invention.

Claims (4)

1. The utility model provides a cassava combine harvester which characterized in that: the device comprises an excavating device, a vibrating conveying device, a discharging device and a transmission mechanism, wherein the excavating device, the vibrating conveying device and the discharging device are sequentially arranged on a frame (1) from front to back, a rotary land wheel (2) is arranged at the bottom of the frame (1), a traction frame (3) is arranged at the front end of the frame, the transmission mechanism is arranged at the upper side of the traction frame (3), and a cutting disc (43) is further arranged on the frame (1) at the front side of the excavating device; the excavating device consists of an excavating shovel (4), a transition plate (5), a swinging rod (6) and an eccentric wheel (7), wherein two sides of the excavating shovel (4) are respectively provided with mounting lugs, the middle parts of the mounting lugs are mounted on a frame (1) through movable shafts (8), the upper parts of the mounting lugs are connected with one end of the swinging rod (6) through swinging shafts (9), the other end of the swinging rod (6) is provided with an eccentric sleeve, the eccentric sleeve is connected with a rotating shaft (10) through the eccentric wheel (7), the rotating shaft (10) is connected to the frame (1), the excavating shovel (4) is made of a 65Mn quenched and tempered steel plate material, the outer sides of the excavating shovel are in a inverted w-shaped structure, the inner sides of the excavating shovel are provided with the transition plate (5), and the transition plate (5) faces to a vibration conveying device; the vibrating conveying device comprises a conveying sieve (11), a first-stage conveying frame (12), a second-stage conveying frame (13), a hydraulic cylinder (14), a conveying sieve supporting shaft (15), a first-stage conveying vibrating shaft (16), a second-stage conveying rotating shaft (17) and a third-stage conveying rotating shaft (18), wherein the conveying sieve supporting shaft (15) and the first-stage conveying vibrating shaft (16) are respectively arranged on the first-stage conveying frame (12) of the frame (1) at intervals from front to back through bearings, the first-stage conveying frame (12) is arranged at the front part of the frame (1), the second-stage conveying frame (13) is connected to the rear end part of the first-stage conveying frame (12) through the second-stage conveying rotating shaft (17), the third-stage conveying rotating shaft (18) is respectively arranged at the front and back positions of the second-stage conveying frame (13), the conveying sieve (11) is arranged on the conveying sieve supporting shaft (15), the first-stage conveying vibrating shaft (16), the second-stage conveying rotating shaft (17) and the third-stage conveying rotating shaft (18) at intervals, the inner sides of the conveying sieve (11) are supported by the frame (1) in a supporting manner, the inner sides of the conveying sieve are supported by the frame (1), the driving wheels (19) are uniformly contacted with the conveying sieve (19) and the driving wheels (19), the conveying sieve (11) is driven to run by the driving plum blossom rubber wheel (19), a fourth driving chain wheel (36) is respectively arranged at two ends of the primary conveying vibration shaft (16), elliptical vibration wheels (20) are uniformly arranged on the primary conveying vibration shaft (16) at the inner side of the fourth driving chain wheel (36), the primary conveying vibration shaft (16) is contacted with the conveying sieve (11) through the elliptical vibration wheels (20), a cross rod (21) at the upper side of the secondary conveying frame (13) is connected with one end of a hydraulic cylinder (14), and the other end of the hydraulic cylinder (14) is connected with a support (22) at the upper side of the frame (1).

2. A cassava combine harvester according to claim 1, in which: the discharging device comprises a cassava loading and unloading bucket (23), a lifting hydraulic cylinder (24) and a hopper supporting frame (25), wherein a vertical wall (26) is arranged on one side of the cassava loading and unloading bucket (23), the lifting hydraulic cylinders (24) are respectively arranged on two sides of the vertical wall (26), one end of each lifting hydraulic cylinder (24) is movably connected with the corresponding vertical wall (26), the other end of each lifting hydraulic cylinder is connected with the corresponding hopper supporting frame (25), the hopper supporting frame (25) is arranged on one side of the frame (1), the cassava loading and unloading bucket (23) is supported on the frame (1), the vertical wall (26) of the cassava loading and unloading bucket (23) is mutually attached to the corresponding hopper supporting frame (25), and the top end of the vertical wall (26) is connected with the corresponding hopper supporting frame (25) through a transverse shaft (27).

3. A cassava combine harvester according to claim 1, in which: the transmission mechanism comprises a transmission universal joint (28), a universal joint transmission shaft (29), a first transmission chain (30), a second transmission chain (31), a third transmission chain (32), a first transmission sprocket (33), a second transmission gear (34), a third transmission sprocket (35), a fourth transmission sprocket (36), a fifth transmission sprocket (37), a sixth transmission sprocket (38), a seventh transmission sprocket (39), an eighth transmission sprocket (40) and a ninth transmission gear (41), wherein the first transmission sprocket (33) and the ninth transmission gear (41) are respectively arranged at two ends of the universal joint transmission shaft (29), the second transmission gear (34) is arranged on a rotating shaft (10), the third transmission sprocket (35) is arranged on a shaft of a frame (1), the fourth transmission sprocket (36) and the fifth transmission sprocket (37) are respectively arranged at two ends of a primary transmission vibrating shaft (16), the sixth transmission sprocket (38) and the seventh transmission sprocket (39) are respectively arranged at two ends of a secondary transmission rotating shaft (17), the eighth transmission sprocket (40) is respectively arranged at two ends of a tertiary transmission sprocket (18), the third transmission sprocket (35) is respectively arranged at two ends of the third transmission sprocket (35), the ninth transmission gear (41) is meshed with the second transmission gear (34), the second transmission chain (31) is connected to the fifth transmission sprocket (37) and the sixth transmission sprocket (38), the third transmission chain (32) is connected to the seventh transmission sprocket (39) and the eighth transmission sprocket (40), the transmission universal joint (28) is connected with the universal joint transmission shaft (29) through a gearbox (42), the transmission universal joint (28) is connected with a power device of the tractor, the tractor power device drives the transmission universal joint (28) to rotate, the transmission universal joint (28) drives the universal joint transmission shaft (29) to rotate through the gearbox (42), the universal joint transmission shaft (29) drives the second transmission gear (34) to rotate through the ninth transmission gear (41), and then drives the eccentric wheel (7) to operate, meanwhile, the universal joint transmission shaft (29) drives the first transmission chain (30) through the first transmission sprocket (33), and then drives the second transmission chain (31) and the third transmission chain (32) to operate, and the first transmission chain (30), the second transmission chain (31) and the third transmission chain (32) drive the corresponding devices to operate.

4. A cassava combine harvester according to claim 3 in which: the transmission chain, the transmission chain wheel and the transmission gear are respectively provided with two sets, and are respectively arranged at two sides of the frame (1).