Multi-drive potato digging and drip irrigation tape recycling combined machine

Abstract

The invention belongs to the technical field of potato operation machines, and particularly relates to a multi-drive potato digging and drip irrigation belt recycling combined machine. The combined operation machine comprises a rack, and a wringing and belt arranging device, a walking depth limiting device, a coiled belt self-discharging device, a shaking conveying device, a driving system and an excavating device which are mounted on the rack. Through multi-system cooperation of the torque detection and adjustment hydraulic control system, the hydraulic system and the mechanical system, the problems of large manpower consumption and high production cost caused by independent recovery operation of the drip irrigation tape during segmented harvesting under the potato shallow-buried drip irrigation technology are solved, potato digging and drip irrigation tape recovery operation are carried out at the same time, and the working efficiency is improved. The working efficiency of potato harvesting and drip irrigation tape recycling is improved, manpower consumption is reduced, the production cost is reduced, and development of the whole mechanization process of potatoes is promoted.

Description

Technical Field

[0001] The invention belongs to the technical field of potato working machines, and in particular relates to a multi-drive potato digging and drip irrigation belt recycling combined working machine. Background Art

[0002] The potato shallow buried drip irrigation technology can save water, save fertilizer, and increase production during potato planting, but it brings many troubles to the harvesting process. At present, the potato harvesting method is mainly segmented harvesting, that is, the machine digs the potatoes and then picks them up manually. The existence of the drip irrigation tape requires the collection of the drip irrigation tape after the potato picking is completed, which further increases the consumption of manual labor. Therefore, a potato digging and drip irrigation tape recovery combined operation machine that is efficient, low-loss and compatible with the potato shallow buried drip irrigation technology is needed. However, the existing potato digging and drip irrigation tape recovery combined operation machine is simply a simple integration of the potato harvester and the drip irrigation tape recovery device, and the mutual cooperation relationship between the two is not deeply considered, resulting in the widespread existence of incomplete potato-soil separation, serious potato damage, high drip irrigation tape breakage rate, time-consuming and labor-intensive manual unloading, and the recycling of round bales is complicated and difficult to reuse, as well as low intelligence.

[0003] For example, the Chinese invention patent application "A potato digging-drip tape recovery combined operation machine" CN114208475A adopts a traditional single-layer lifting chain to convey the potato-soil mixture and potato vines and weeds dug by a digging shovel, and the potato-soil mixture and potato vines and weeds are separated by a rear three-stage vibrating screen. Since the lifting chain has a short conveying distance and no shaking separation device is provided, congestion is prone to occur, and the three-stage vibrating screen surface has problems such as serious potato collision damage, incomplete potato-soil separation, and the potato-soil separation efficiency is proportional to the potato damage; its drip tape recovery device adopts a traditional mechanical ground wheel drive, which cannot solve the problem of frequent tape breakage caused by the mismatch of operating speed caused by the gradual increase of the recovery radius, and the low recovery efficiency; if a tape discharge mechanism is not provided, the recovered drip tape will be disordered and difficult to reuse; the umbrella-shaped structure adopted by the drip tape unloading device, although it reduces the labor intensity of manual unloading to a certain extent, still has the problem of difficult unloading, low efficiency due to manual unloading, and excessive labor intensity. Summary of the invention

[0004] In view of the above technical problems, the purpose of the present invention is to provide a multi-drive potato digging and drip tape recovery combined operation machine, which solves the problems of high manpower consumption and high production costs caused by the separate recovery operation of the drip tape during segmented harvesting under the potato shallow buried drip irrigation technology through torque detection and adjustment of the hydraulic control system, the hydraulic system and the mechanical system. It can realize the simultaneous potato digging and drip tape recovery operations, improve the efficiency of potato harvesting and drip tape recovery operations, reduce manpower consumption, reduce production costs, and promote the development of the full mechanization process of potatoes.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A multi-drive potato digging and drip irrigation tape recovery combined operation machine comprises a frame 1, and a wringing and discharging tape device 2, a walking depth limiting device 3, a tape winding self-unloading device 4, a shaking conveying device 5, a driving system 6 and a digging device 7 installed on the frame 1.

[0007] The frame 1 includes a front crossbeam 1-1, a three-point suspension frame 1-2, a suspension rod 1-3, an upper crossbeam 1-4, a vertical beam 1-5, a load-bearing crossbeam 1-6, a drive system bracket 1-7, a fixed beam 1-8, a side plate 1-9 and a fixed frame 1-10; the front crossbeam 1-1, the load-bearing crossbeam 1-6, the drive system bracket 1-7 and the fixed frame 1-10 are fixedly connected to the two side plates 1-9 in sequence from front to back; the upper crossbeam 1-4 is fixedly connected to the top of the load-bearing crossbeam 1-6 through the vertical beam 1-5; three fixed beams 1-8 arranged horizontally in the longitudinal direction are fixedly connected to the rear end surface of the upper crossbeam 1-4 and the fixed frame 1-10 at equal intervals; the three-point suspension frame 1-2 is fixedly connected to the front crossbeam 1-1; the suspension rod 1-3 is fixedly connected between the three-point suspension frame 1-2 and the upper crossbeam 1-4.

[0008] The wringing and belt discharge device 2 comprises a belt discharge mechanism 2-1 and a wringing and flow guiding mechanism 2-2.

[0009] The belt discharging mechanism 2-1 comprises a lead screw 2-1-1, a lead screw bearing 2-1-2 with a diamond seat, a slider 2-1-3, a sliding tongue 2-1-4, a slider connecting plate 2-1-5, a slide rail 2-1-6, a crossbeam connecting block 2-1-7 and a lead screw driving sprocket 2-1-8; the three crossbeam connecting blocks 2-1-7 are fixedly connected to the three fixed beams 1-8 with adjustable longitudinal mounting positions; the two lead screws 2-1-1 are installed in the same straight line on the crossbeam connecting block 2-1 through the lead screw bearings 2-1-2 with diamond seats -7; the slide rail 2-1-6 is installed on the crossbeam connecting block 2-1-7 parallel to the lead screw 2-1-1; the end of each lead screw 2-1-1 is fixedly connected to a lead screw driving sprocket 2-1-8; a slider 2-1-3 is arranged on each lead screw 2-1-1 through a sliding tongue 2-1-4, and each slider 2-1-3 is fixedly connected to a slider connecting plate 2-1-5 which is slidably connected to the slide rail 2-1-6; the bottom end of each slider connecting plate 2-1-5 is fixedly connected to a wringing guide mechanism 2-2.

[0010] The wringing guide mechanism 2-2 includes a wringing guide fixing plate 2-2-1, a wringing wheel mounting plate 2-2-2, a wringing wheel 2-2-3, a horizontal mounting frame 2-2-4, a transverse guide roller 2-2-5, a vertical guide roller 2-2-6 and an inclined mounting plate 2-2-7.

[0011] The wringing guide fixing plate 2-2-1 is fixed to the bottom end of the slider connecting plate 2-1-5; the upper ends of two vertically and parallelly arranged wringing wheel mounting plates 2-2-2 are fixed to the lower surface of the wringing guide fixing plate 2-2-1; two wringing wheels 2-2-3 arranged up and down and with adjustable spacing are installed between the two wringing wheel mounting plates 2-2-2; the middle part of the horizontal mounting frame 2-2-4 is fixed to the lower ends of the two wringing wheel mounting plates 2-2-2; the inclined mounting plate 2-2-7 is fixed to the horizontal mounting frame 2-2 -4; a pair of vertical guide rollers 2-2-6 arranged in parallel and at a certain distance are installed on the front and rear bottom plates of the horizontal mounting frame 2-2-4 and the inclined mounting plate 2-2-7; the lateral guide roller 2-2-5 is installed on the rear end of the horizontal mounting frame 2-2-4, protruding from the left and right side plates of the rear bottom plate, and is located between a pair of vertical guide rollers 2-2-6 on the rear bottom plate of the horizontal mounting frame 2-2-4 and a pair of vertical guide rollers 2-2-6 on the inclined mounting plate 2-2-7.

[0012] The excavating device 7 is fixedly connected to the front ends of the two side plates 1-9; the walking depth limiting device 3 is height-adjustably installed at the rear ends of the two side plates 1-9.

[0013] The belt unloading device 4 includes an active belt bearing 4-1 with a diamond seat, a detachable belt mechanism 4-2, a lifting arm 4-3, a U-shaped card 4-4, a lifting arm connecting plate 4-5, a hydraulic cylinder 4-6, a hanging ear 4-7 and an unloading mechanism 4-8.

[0014] The detachable tape winding mechanism 4-2 includes a fixed tape winding shaft 4-2-1, a tape winding driving sprocket 4-2-4, a flange 4-2-5, a conical drum 4-2-6, a drum mounting disk 4-2-7, a limiting disk 4-2-9, an active ratchet 4-2-11, a driven ratchet 4-2-12 and a movable tape winding shaft 4-2-13.

[0015] The two lifting arms 4-3 are hinged to the left and right ends of the upper crossbeam 1-4 through a rotating shaft 4-3-5 arranged at the top thereof and parallel to the longitudinal axis of the machine; the rotating shaft 4-3-5 is connected to the upper crossbeam 1-4 through a U-shaped card 4-4 and a lifting arm connecting plate 4-5; the cylinder ends of the two hydraulic cylinders 4-6 are hinged to the two hanging ears 4-7 fixed to the upper crossbeam 1-4, and the ends of the telescopic rods are hinged to the lifting arms 4-3 on the same side; the lower inner sides of the two lifting arms 4-3 are both equipped with a movable belt reel shaft 4- 2-13; the fixed tape reel shaft 4-2-1 is horizontally mounted on the vertical beam 1-5 through a pair of active tape reel bearings 4-1 with diamond seats; both ends of the fixed tape reel shaft 4-2-1 extend to the left and right sides; when the telescopic rod of the hydraulic cylinder 4-6 is in an extended state, the two movable tape reel shafts 4-2-13 are located on the same straight line as the fixed tape reel shaft 4-2-1; when the telescopic rod of the hydraulic cylinder 4-6 is in a retracted state, the two movable tape reel shafts 4-2-13 rotate outwards and separate from the fixed tape reel shaft 4-2-1, thereby realizing the unloading of the drip tape round bale.

[0016] A winding roller consisting of a flange 4-2-5, a conical drum 4-2-6, a drum mounting disk 4-2-7 and a limiting disk 4-2-9 is installed on the shaft bodies on the left and right sides of the fixed winding shaft 4-2-1 and the two movable winding shafts 4-2-13; the winding roller on the left shaft body of the fixed winding shaft 4-2-1 and the winding roller on the left movable winding shaft 4-2-13 are symmetrical to each other, and together constitute a left winding monomer; the winding roller on the right shaft body of the fixed winding shaft 4-2-1 and the winding roller on the right movable winding shaft 4-2-13 are symmetrical to each other, and together constitute a right winding monomer; wherein, the lower bottom surface of the conical drum 4-2-6 is fixedly connected to the drum mounting disk 4-2-7 as a whole; the flange 4-2-5 and the conical drum 4-2-6 are fixedly connected to the limiting disk 4- 2-9; the reel mounting disk 4-2-7 is fixedly connected to the limiting disk 4-2-9 by means of fixing bolts 4-2-8; a driving ratchet 4-2-11 is fixedly connected to the left and right axial ends of the fixed tape reel 4-2-1, and a driven ratchet 4-2-12 is fixedly connected to the axial ends of the two movable tape reel shafts 4-2-13; the driving ratchet 4-2-11 and the driven ratchet 4-2-12 are limited by the upper bottom surface of the conical reel 4-2-6 through the retaining ring 4-2-10; when the fixed tape reel 4-2-1 and the movable tape reel shaft 4-2-13 are located in the same straight line, the driving ratchet 4-2-11 and the driven ratchet 4-2-12 are meshed with each other; the tape drive sprocket 4-2-4 is fixedly connected to the fixed tape reel 4-2-1, and is located between the tape roller and the driving tape bearing 4-1 with a rhombus seat.

[0017] The unloading mechanism 4-8 is arranged below the detachable tape winding mechanism 4-2; the unloading mechanism 4-8 comprises a left slide plate 4-8-1, a right slide plate 4-8-2 and a slide plate support plate 4-8-3; the left slide plate 4-8-1 and the right slide plate 4-8-2, which are symmetrical on the left and right, are fixedly connected to the load-bearing beam 1-6 of the frame 1 by the slide plate support plate 4-8-3 with the inner side higher and the outer side lower, respectively corresponding to the left tape winding monomer and the right tape winding monomer, so as to realize the sliding of the drip irrigation tape round bundle.

[0018] The shaking conveyor 5 includes a primary shaking conveyor 5-1 and a secondary shaking conveyor 5-2 which are arranged in an inclined manner from front to back with the front lower and the back higher, and are used to remove the debris attached to the potatoes and transport the potatoes backwards; the front end of the secondary shaking conveyor 5-2 is located below the rear end of the primary shaking conveyor 5-1.

[0019] The first-stage shaking conveying device 5-1 includes a first-stage conveying chain 5-1-1, a first-stage support sprocket 5-1-2, a flower-shaped shaking wheel 5-1-4, a friction safety clutch 5-1-5, a first transmission sprocket 5-1-8, a first-stage driving gear 5-1-9, a first-stage driving shaft 5-1-10, a through-type bearing seat with a cover 5-1-11 and a second transmission sprocket 5-1-12.

[0020] A pair of primary support sprockets 5-1-2 are fixedly connected to the front part of the left and right side plates 1-9; the primary drive shaft 5-1-10 is installed in the middle part of the left and right side plates 1-9 through a through-type belt cover bearing seat 5-1-11; a pair of primary drive gears 5-1-9 are fixedly connected to the primary drive shaft 5-1-10; the primary conveying chain 5-1-1 is sleeved on the primary support sprockets 5-1-2 and the primary drive gears 5-1-9; the primary conveying chain 5-1-1 is composed of two primary chain belts 5-1-1-1 and a plurality of primary rods 5-1-1-2 uniformly fixed on the primary chain belts 5-1-1-1, wherein the primary chain belts 5-1-1-1 are in contact with the primary support sprockets 5-1-2, and the gear teeth of the primary drive gear 5-1-9 are meshed in the interval between two adjacent primary rods 5-1-1-2.

[0021] The flower-shaped shaking wheel 5-1-4 is arranged below the upper chain of the primary conveying chain 5-1-1. The flower-shaped shaking wheel 5-1-4 has a plurality of raised petals evenly distributed along the circumference. The tops of the raised petals are provided with grooves meshing with the primary rod 5-1-1-2, so that the upper chain of the primary conveying chain 5-1-1 generates a certain amplitude during the rotation process.

[0022] The friction clutch 5-1-5 and the first transmission sprocket 5-1-8 are fixedly connected to the left end of the primary drive shaft 5-1-10; the second transmission sprocket 5-1-12 is fixedly connected to the right end of the primary drive shaft 5-1-10.

[0023] The secondary shaking conveying device 5-2 includes a secondary conveying chain 5-2-1, a secondary support sprocket 5-2-2, a strong shaking mechanism 5-2-3, a third transmission sprocket 5-2-5, a secondary driving shaft 5-2-11, a secondary driving gear 5-2-12 and a closed bearing seat with a cover 5-2-13.

[0024] A pair of secondary sprocket wheels 5-2-2 are fixedly connected to the middle of the left and right side plates 1-9, and are located below the rear end of the primary shaking conveying device 5-1; the secondary driving shaft 5-2-11 is installed at the rear of the left and right side plates 1-9 through a closed cover bearing seat 5-2-13; a pair of secondary driving gears 5-2-12 are fixedly connected to the secondary driving shaft 5-2-11; the secondary conveying chain 5-2-1 is sleeved on the secondary sprocket wheels 5-2-2 and the secondary driving gears 5-2-12; the secondary conveying chain 5-2-1 is composed of It is composed of two secondary chain belts 5-2-1-3 and a plurality of secondary rods 5-2-1-1 uniformly fixed on the secondary chain belts 5-2-1-3, wherein the secondary chain belts 5-2-1-3 are in contact with the secondary support sprocket 5-2-2, and the teeth of the secondary drive gear 5-2-9 are meshed in the interval between two adjacent secondary rods 5-2-1-1; the third transmission sprocket 5-2-5 is fixed to the left end of the secondary drive shaft 5-2-11, and is connected to the first transmission sprocket 5-1-8 through a transmission chain.

[0025] The strong shaking mechanism 5-2-3 is arranged below the upper chain of the secondary conveying chain 5-2-1, and the strong shaking mechanism 5-2-3 includes a vertical seat bearing 5-2-3-1, a shaking wheel fixing plate 5-2-3-2, a shaking wheel 5-2-3-3, a strong shaking drive shaft 5-2-3-4 and a strong shaking drive sprocket 5-2-3-5; the strong shaking drive shaft 5-2-3-4 is installed on the left and right side plates through the vertical seat bearing 5-2-3-1 1-9; a plurality of shaking wheel fixing plates 5-2-3-2 are arranged at equal intervals on the strong shaking driving shaft 5-2-3-4, the middle part of the shaking wheel fixing plate 5-2-3-2 is fixedly connected to the strong shaking driving shaft 5-2-3-4, and a shaking wheel 5-2-3-3 is installed at both ends; the strong shaking driving sprocket 5-2-3-5 is fixedly connected to the right end of the strong shaking driving shaft 5-2-3-4, and is connected to the second transmission sprocket 5-1-12 through a transmission chain.

[0026] The driving system 6 includes a spline coupling 6-1-1, a gearbox 6-1-2, a gearbox power output shaft 6-1-3, a covered vertical bearing seat 6-1-4, an output shaft drive sprocket 6-1-5, an input shaft drive sprocket 6-1-6, a chain 6-1-7, an oil pump drive sprocket 6-1-8, a vertical bearing seat 6-1-9, an oil pump 6-2-1, an oil tank 6-2-4, a hydraulic diverter 6-2-5, a hydraulic speed regulating valve 6-2-6, a wringing and draining hydraulic motor 6-2-7, an oil return line assembly 6-2-8, a flange coupling 6-2-10, a double-row sprocket 6-2-11, a square bearing seat 6-2-12, an oil pipe 6-2-15, an electromagnetic proportional flow valve 6-3-1, a winding hydraulic motor 6-3-2, a torque sensor 6-3-3, a shaft sprocket 6-3-4 and a controller 6-3-6.

[0027] Among them, one end of the spline coupling 6-1-1 is connected to the power input shaft of the gearbox 6-1-2 fixedly connected to the front part of the frame 1, and the other end is connected to the power output shaft of the tractor, providing a power source for the whole machine; the gearbox power output shaft 6-1-3 is installed on the frame 1 through a covered vertical seat bearing 6-1-4; the output shaft drive sprocket 6-1-5 is fixedly connected to the gearbox power output shaft 6-1-3, and is connected to the sprocket on the friction safety clutch 5-1-5 through a transmission chain, driving the primary drive shaft 5-1-10 to rotate; the input shaft drive sprocket 6-1-6 is fixedly connected to the power input shaft of the gearbox 6-1-2, and is connected to the oil pump drive sprocket 6-1-8 fixedly connected to the drive shaft of the oil pump 6-2-1 through a chain 6-1-7, and the drive shaft of the oil pump 6-2-1 is installed on the frame 1 through a vertical bearing seat 6-1-9.

[0028] The oil pump 6-2-1 and the hydraulic diverter 6-2-5 are fixedly connected to the frame 1 through the "Z" support plate 6-2-2; the oil tank 6-2-4 is fixedly connected to the frame 1 through the oil tank bracket 6-2-3; the wringing and draining hydraulic motor 6-2-7 and the winding hydraulic motor 6-3-2 are fixedly connected to the rear and middle of the frame 1 through the motor support plate 6-2-9 and the slotted positioning plate 6-2-14 fixed to the frame 1; the axles of the double-row sprocket 6-2-11 and the belt shaft sprocket 6-3-4 are respectively installed at the rear and middle of the frame 1 through the square bearing seat 6-2-12 and the bearing seat support plate 6-2-13; the torque sensor 6-3-3 is installed in the middle of the frame 1 through the sensor support plate 6-3-5, located between the winding hydraulic motor 6-3-2 and the belt shaft sprocket 6-3-4; The power output shaft of the hydraulic motor 6-2-7 is fixedly connected to the axle of the double-row sprocket 6-2-11 through a flange coupling 6-2-10; the double-row sprocket 6-2-11 is connected to the two screw drive sprockets 2-1-8 of the wringing and discharging device 2 through a transmission chain, driving the screw 2-1-1 to rotate; the two ends of the torque sensor 6-3-3 are fixedly connected to the power output shaft of the belt winding hydraulic motor 6-3-2 and the axle of the belt shaft sprocket 6-3-4 through a flange coupling 6-2-10; the belt shaft sprocket 6-3-4 is connected to the belt winding drive sprocket 4-2-4 through a transmission chain, driving the fixed belt winding shaft 4-2-1 to rotate; the controller 6-3-6 is fixedly connected to the frame 1 through the controller bracket 6-3-7, and the controller 6-3-6 is respectively connected to the torque sensor 6-3-3 and the electromagnetic proportional flow valve 6-3-1.

[0029] The oil inlet of the oil pump 6-2-1 is connected to the oil tank 6-2-4 through an oil pipe 6-2-15, and the oil outlet of the oil pump 6-2-1 is connected to the hydraulic diverter 6-2-5 through an oil pipe; the equal oil pressure port and the equal flow port of the hydraulic diverter 6-2-5 are respectively connected to the oil inlet of the hydraulic speed regulating valve 6-2-6 and the oil inlet of the electromagnetic proportional flow valve 6-3-1 through oil pipes; the oil outlet of the hydraulic speed regulating valve 6-2-6 is connected to the oil inlet of the wringing and draining hydraulic motor 6-2-7 through an oil pipe; The oil outlet of the electromagnetic proportional flow valve 6-3-1 is connected to the oil inlet of the belt winding hydraulic motor 6-3-2; the oil inlet of the return oil circuit assembly 6-2-8 is connected to the oil return port of the wringing and draining hydraulic motor 6-2-7, the oil return port of the belt winding hydraulic motor 6-3-2, the oil return port of the hydraulic speed control valve 6-2-6, and the overflow port of the electromagnetic proportional flow valve 6-3-1 through oil pipes, and the oil outlet of the return oil circuit assembly 6-2-8 is connected to the oil inlet of the oil tank 6-2-4 through an oil pipe to complete the circulation of the oil circuit.

[0030] The material of the transverse guide roller 2-2-5 and the vertical guide roller 2-2-6 is nylon; the material of the wringer wheel 2-2-3 is polyurethane; the angle between the inclined mounting plate 2-2-7 and the horizontal plane is 30°.

[0031] A short shaft sleeve 4-2-2 is provided on the fixed tape shaft 4-2-1 between the tape drive sprocket 4-2-4 and the active tape bearing 4-1 with a diamond seat, so that the tape drive sprocket 4-2-4 is close to the flange 4-2-5; a long shaft sleeve 4-2-3 is provided on the fixed tape shaft 4-2-1 between the tape roller on the other side and the active tape bearing 4-1 with a diamond seat.

[0032] The lifting arm 4-3 includes a lifting arm body 4-3-1, a bearing chamber mounting plate 4-3-2, a deep groove ball bearing 4-3-4, a rotating shaft 4-3-5, a connecting rod fixing plate 4-3-6, a main connecting rod 4-3-7 and a hinge bolt 4-3-9; L-shaped grooves are opened on both sides of the top of the lifting arm body 4-3-1 and fixedly connected to the bearing chamber mounting plate 4-3-2 to form a bearing chamber 4-3-3; the rotating shaft 4-3-5 is installed in the bearing chamber 4-3-3 through a deep groove ball bearing 4-3-4; the connecting rod fixing plate 4-3-6 is fixedly connected to the outer side of the lifting arm body 4-3-1, the lower end of the main connecting rod 4-3-7 is fixedly connected to the connecting rod fixing plate 4-3-6, and the upper end is provided with a hinge bolt 4-3-9 for hinged connection with the telescopic rod end of the hydraulic cylinder 4-6; a reinforcing plate 4-3-8 is provided on the main connecting rod 4-3-7.

[0033] A primary support wheel 5-1-3 and a primary support tube 5-1-6 fixedly connected to the left and right side plates 1-9 are provided below the upper chain of the primary conveying chain 5-1-1; a secondary support tube 5-2-8 is provided below the upper chain of the secondary conveying chain 5-2-1, and a secondary support wheel 5-2-9 is installed on the secondary support tube 5-2-8 through a support wheel bracket 5-2-10; the rear part of the secondary shaking conveying device 5-2 is provided with an "eight"-shaped guide guard plate 5-2-6 and a potato collecting plate 5-2-7 fixedly connected to the left and right side plates 1-9.

[0034] The first-level shaking conveying device 5-1 is divided into two left-right symmetrical shaking conveying units by the middle support plate 5-1-7; the front end of the middle support plate 5-1-7 is fixedly connected to the excavation device 7, and the middle part is fixedly connected to the first-level support pipe 5-1-6; the middle part of the second-level conveying chain 5-2-1 is provided with a third second-level chain belt 5-2-1-3, and the third second-level chain belt 5-2-1-3 is fixedly connected to the second-level rod 5-2-1-1 through the middle clip 5-2-1-2.

[0035] An adjustable supporting mechanism 5-2-4 is provided at the lower rear part of the upper chain of the secondary conveying chain 5-2-1 for adjusting the inclination and rising angle of the secondary conveying chain 5-2-1; the adjustable supporting mechanism 5-2-4 comprises a crank 5-2-4-1, a connecting rod 5-2-4-2, an adjustable supporting wheel 5-2-4-3, a supporting wheel fixing plate 5-2-4-4 and a supporting rod 5-2-4-5; a plurality of supporting wheel fixing plates 5-2-4-4 are fixedly connected to the supporting rod 5-2-4-5 at equal intervals, and an adjustable supporting mechanism 5-2-4-4 for supporting the secondary conveying chain 5-2-1 is installed on the supporting wheel fixing plate 5-2-4-4. Support wheel 5-2-4-3; the left and right ends of the support rod 5-2-4-5 are fixedly connected with a crank 5-2-4-1, and the crank 5-2-4-1 is hinged to the connecting rod 5-2-4-2 fixedly connected to the left and right side plates 1-9 in an adjustable hinge position through a hinge bolt; different hinge positions make the support rod 5-2-4-5 have different horizontal heights, thereby realizing the adjustment of the inclination and rising angle of the secondary conveying chain 5-2-1, and at the same time, the vibration amplitude of the secondary conveying chain 5-2-1 under the action of the strong shaking mechanism can be changed accordingly; the inclination and rising angle range of the secondary conveying chain 5-2-1 is 10°~20°.

[0036] The inclined rising angle of the primary conveying chain 5-1-1 is 21°; the inclined rising angle of the secondary conveying chain 5-2-1 is 14°.

[0037] The excavation device 7 includes a short shovel 7-1, a long shovel 7-2, and a shovel seat 7-3, wherein the long shovel 7-2 and the short shovel 7-1 have countersunk slots, and the shovel tip has a blade angle, and the shovel seat 7-3 is fixedly connected to the shovel by countersunk bolts and welded to the frame 1.

[0038] The walking depth limiting device 3 includes a walking wheel 3-1, a limiting roller 3-2, a support arm connecting block 3-3, a side plate connecting block 3-4, a depth limiting connecting rod 3-5, a fixed plate 3-6, a sealed bearing seat 3-7 and a support arm 3-8; the limiting roller 3-2 is arranged on the wheel axle between the two walking wheels 3-1, and a sealed bearing seat 3-7 is provided at both ends of the wheel axle; the front end of the sealed bearing seat 3-7 is fixedly connected to a support arm 3-8, and the front end of the support arm 3-8 is hinged to the support arm connecting block 3-3 fixedly connected to the side plate 1-9; the rear end of the sealed bearing seat 3-7 is fixedly connected to a fixed plate 3-6; the lower end of the vertically arranged depth limiting connecting rod 3-5 is fixedly connected to the fixed plate 3-6, and the upper end of the depth limiting connecting rod 3-5 is fixedly connected to the side plate connecting block 3-4 fixedly connected to the side plate 1-9 with an adjustable installation height.

[0039] When the torque value detected by the torque sensor 6-3-3 exceeds the set limit, the output electrical signal is transmitted to the controller 6-3-6. The signal processing module in the controller 6-3-6 converts the electrical signal into a digital signal and transmits it to the single-chip microcomputer in the controller 6-3-6 for real-time processing. The single-chip microcomputer controls the proportional movement of the valve body inside the electromagnetic proportional flow valve 6-3-1 according to the preset value, thereby reducing the flow and pressure of the hydraulic oil, thereby controlling the speed of the winding hydraulic motor 6-3-2 to decrease; otherwise, the motor speed is increased to achieve electro-hydraulic control.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] 1. The present invention adopts a two-stage shaking conveying device with a fixed inclined rising angle, and is provided with a drivable strong shaking mechanism, an adjustable supporting mechanism, a friction plate type safety clutch, an "eight"-shaped guide guard plate and a potato collecting plate; wherein, the inclined rising angle of the first-stage shaking conveying device is 21°, ensuring that the potato-soil mixture, potato vines and weeds are conveyed and shaken and separated on the first-stage shaking conveying device, and most of the loose soil leaks to the surface through the gaps between the bars on the first-stage conveying chain, and the remaining agglomerated soil, stones and potatoes are conveyed to the second-stage shaking conveying device with an inclined rising angle of preferably 14°. Under the action of the drivable strong shaking mechanism and the adjustable supporting mechanism inside the second-stage shaking conveying device, the second-stage conveying chain generates an up and down amplitude, which is used to break up soil agglomerates, separate soil particles attached to potatoes, convey potatoes and some potato vines and weeds, and gather the conveyed potatoes into strips through the "eight"-shaped guide guard plate and the potato collecting plate. Compared with the existing technology, the shaking conveyor device 5 of the present invention has significant advantages such as more thorough potato and soil separation, less potato damage and skin breakage, and higher work efficiency, and is provided with a friction plate safety clutch to prevent damage to the shaking conveyor device due to overload movement caused by congestion.

[0042] 2. The present invention adopts a tape self-unloading device that integrates a detachable tape reel mechanism and a lifting arm, which solves the problem of manual tape unloading in traditional drip irrigation tape recovery devices, saving manpower and time costs;

[0043] 3. The present invention adopts a wringing and discharging device, and utilizes the reciprocating motion of the screw to arrange the recycled drip irrigation tape bales neatly and orderly, which is convenient for secondary recycling and unloading. At the same time, the squeezing effect of the wringing wheel is used to remove the residual moisture in the drip irrigation tape, so that the entire bale is in a dry state. ;

[0044] 4. The whole machine is jointly driven by the hydraulic control system, hydraulic system and mechanical system through torque detection and adjustment. It has the safety and stability of traditional mechanical system and hydraulic system, and integrates the intelligence of electro-hydraulic control system. During the operation, the mechanical system controls the digging, transportation, separation, and strip laying of potatoes. The torque detection and adjustment hydraulic control system detects the torque value in the tape winding process in real time, and feedback controls the tape winding speed to avoid the phenomenon of tape breaking and low efficiency. The hydraulic system controls the rolling, neat and orderly arrangement and self-unloading of the drip irrigation tape round bundle. Compared with the prior art, the multi-system driving method is more comprehensive, intelligent, safe and reliable, and has high work efficiency. Compared with the prior art, the driving system of the present invention improves the problems of low intelligence, inability to accurately control, and low operating efficiency caused by the existing device driven only by the mechanical system. The speed regulating valve and hydraulic diverter are added to the hydraulic system, which can realize the adjustment of the wringing and draining device at any time and control the drip irrigation tape to be arranged neatly and orderly. The torque detection and adjustment hydraulic control system is equipped with an electromagnetic proportional flow valve, a torque sensor, a controller, and a single-chip microcomputer. It can realize the fluctuation of the torque value of the detachable tape winding component caused by the different tensions on the drip irrigation tape during the operation. The torque sensor detects the torque value in real time and transmits the signal to the single-chip microcomputer, which controls the feedback signal to be sent to the electromagnetic proportional flow valve, controls the speed of the tape winding operation in real time, and prevents the tape from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a side structural schematic diagram of the multi-drive potato digging and drip irrigation tape recycling combined operation machine of the present invention;

[0046] Figure 2 It is a structural schematic diagram of rack 1;

[0047] Figure 3 It is a structural schematic diagram of the wringing and discharging device 2;

[0048] Figure 4 It is a structural schematic diagram of the walking depth limiting device 3;

[0049] Figure 5 It is a structural schematic diagram of the belt self-unloading device 4;

[0050] Figure 6 It is a schematic diagram of the separation state of the belt unloading device 4;

[0051] Figure 7 is a schematic cross-sectional structural diagram of a detachable tape winding mechanism 42;

[0052] Figure 8 is a schematic structural diagram of the lifting arm 43;

[0053] Fig. 9 is a schematic diagram of the external structure of the shaking conveying device 5;

[0054] Fig.10 is a schematic diagram of the internal structure of the shaking conveying device 5;

[0055] Fig.11 is a schematic structural diagram of a drive system 6;

[0056] Fig.12 is a schematic structural diagram of the excavation device 7;

[0057] Fig.13 It is a side view of the multi-drive potato digging and drip irrigation belt recycling combined operation state of the present invention;

[0058] Fig.14 It is a top view of the combined operation state of multi-drive potato digging and drip irrigation belt recovery of the present invention.

[0059] The accompanying drawings are denoted as follows:

[0060] 1 rack

[0061] 1-1 front crossbeam 1-2 three-point suspension

[0062] 1-3 suspension rod 1-4 upper beam

[0063] 1-5 vertical beams 1-6 load-bearing horizontal beams

[0064] 1-7 drive system bracket 1-8 fixed beam

[0065] 1-9 side panel 1-10 fixed frame

[0066] 2. Wringing and removing belt device

[0067] 2-1 belt discharging mechanism

[0068] 2-1-1 screw 2-1-2 screw bearing with diamond seat

[0069] 2-1-3 slider 2-1-4 sliding tongue

[0070] 2-1-5 Slider connecting plate 2-1-6 Slide rail

[0071] 2-1-7 Beam connecting block 2-1-8 Screw drive sprocket

[0072] 2-2 Wringing and diversion mechanism

[0073] 2-2-1 Wringer guide fixing plate 2-2-2 Wringer wheel installation plate

[0074] 2-2-3 Wringer wheel 2-2-4 Horizontal mounting frame

[0075] 2-2-5 lateral guide roller 2-2-6 vertical guide roller

[0076] 2-2-7 Tilt mounting plate

[0077] 3 Walking depth limit device

[0078] 3-1 Travel wheel 3-2 Limit roller

[0079] 3-3 Support arm connection block 3-4 Side plate connection block

[0080] 3-5 Depth Limiting Link 3-6 Fixed Plate

[0081] 3-7 Sealed bearing seat 3-8 Support arm

[0082] 4 rolls of self-unloading device

[0083] 4-1 Active tape bearing with diamond seat

[0084] 4-2 Separable tape winding mechanism

[0085] 4-2-1 Fixed tape reel shaft 4-2-2 Short shaft sleeve

[0086] 4-2-3 long sleeve 4-2-4 belt drive sprocket

[0087] 4-2-5 flange 4-2-6 cone reel

[0088] 4-2-7 Reel mounting plate 4-2-8 Fixing bolt

[0089] 4-2-9 limit disc 4-2-10 retaining ring

[0090] 4-2-11 Active ratchet 4-2-12 Driven ratchet

[0091] 4-2-13 Movable tape reel

[0092] 4-3 Lifting arm

[0093] 4-3-1 Lifting arm body 4-3-2 Bearing chamber mounting plate

[0094] 4-3-3 bearing chamber 4-3-4 deep groove ball bearing

[0095] 4-3-5 Rotating shaft 4-3-6 Connecting rod fixing plate

[0096] 4-3-7 Main connecting rod 4-3-8 Reinforcement plate

[0097] 4-3-9 hinge bolt 4-3-10 driven belt bearing with diamond seat

[0098] 44U card 4-5 connection plate

[0099] 4-6 Hydraulic cylinder 4-7 Mounting lug

[0100] 4-8 Unloading mechanism

[0101] 4-8-1 left skateboard 4-8-2 right skateboard

[0102] 4-8-3 Skateboard Support Plate

[0103] 5. Shaking conveyor device

[0104] 5-1 First-stage shaking conveyor

[0105] 5-1-1 Primary conveyor chain

[0106] 5-1-1-1 first-level chain belt 5-1-1-2 first-level bar

[0107] 5-1-2 First-stage support sprocket 5-1-3 First-stage support wheel

[0108] 5-1-4 flower-shaped shaking wheel 5-1-5 friction plate safety clutch

[0109] 5-1-6 First-level support tube 5-1-7 Middle support plate

[0110] 5-1-8 first transmission sprocket 5-1-9 first stage driving gear

[0111] 5-1-10 primary drive shaft 5-1-11 through-type bearing seat with cover

[0112] 5-1-12 Second transmission sprocket

[0113] 5-2 Two-stage shaking conveyor device

[0114] 5-2-1 Secondary conveyor chain

[0115] 5-2-1-1 Secondary rod 5-2-1-2 Middle clip

[0116] 5-2-1-3 Secondary chain belt

[0117] 5-2-2 Secondary carrier sprocket

[0118] 5-2-3 Strong shaking mechanism

[0119] 5-2-3-1 with vertical seat bearing 5-2-3-2 shaking wheel fixing plate

[0120] 5-2-3-3 shaking wheel 5-2-3-4 strong shaking drive shaft

[0121] 5-2-3-5 Strong Shake Drive Sprocket

[0122] 5-2-4 Adjustable support mechanism

[0123] 5-2-4-1 crank 5-2-4-2 connecting rod

[0124] 5-2-4-3 Adjustable support wheel 5-2-4-4 Support wheel fixing plate

[0125] 5-2-4-5 support rod

[0126] 5-2-5 The third transmission sprocket 5-2-6 "eight" shaped guide guard

[0127] 5-2-7 potato collecting board 5-2-8 secondary support tube

[0128] 5-2-9 Secondary support wheel 5-2-10 Support wheel bracket

[0129] 5-2-11 Secondary drive shaft 5-2-12 Secondary drive gear

[0130] 5-2-13 Closed Covered Bearing Seat

[0131] 6. Drive system

[0132] 6-1 Mechanical System

[0133] 6-1-1 spline coupling 6-1-2 gearbox

[0134] 6-1-3 gearbox power output shaft 6-1-4 vertical bearing seat with cover

[0135] 6-1-5 Output shaft drive sprocket 6-1-6 Input shaft drive sprocket

[0136] 6-1-7 Chain 6-1-8 Oil pump drive sprocket

[0137] 6-1-9 Vertical Bearing Seat

[0138] 6-2 Hydraulic system

[0139] 6-2-1 Oil pump 6-2-2 "Z" shaped support plate

[0140] 6-2-3 fuel tank bracket 6-2-4 fuel tank

[0141] 6-2-5 hydraulic flow divider 6-2-6 hydraulic speed regulating valve

[0142] 6-2-7 wringer and belt drain hydraulic motor 6-2-8 oil return line assembly

[0143] 6-2-9 Motor support plate 6-2-10 Flange coupling

[0144] 6-2-11 double row sprocket 6-2-12 with square bearing seat

[0145] 6-2-13 Bearing seat support plate 6-2-14 Slotted hole positioning plate

[0146] 6-2-15 Oil Pipe

[0147] 6-3 Torque detection and adjustment hydraulic control system

[0148] 6-3-1 Solenoid proportional flow valve 6-3-2 Tape hydraulic motor

[0149] 6-3-3 torque sensor 6-3-4 sprocket with shaft

[0150] 6-3-5 Sensor support plate 6-3-6 Controller

[0151] 6-3-7 Controller Bracket

[0152] 7 Excavation Device

[0153] 7-1 short shovel 7-2 long shovel

[0154] 7-3 Shovel seat DETAILED DESCRIPTION

[0155] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0156] like Figure 1 As shown, the present invention provides a multi-drive potato digging and drip irrigation tape recovery combined operation machine, including a frame 1, and a wringing and discharging device 2, a walking depth limiting device 3, a belt winding self-unloading device 4, a shaking conveying device 5, a driving system 6 and a digging device 7 installed on the frame 1.

[0157] like Figure 2As shown, the frame 1 includes a front crossbeam 1-1, a three-point suspension frame 1-2, a suspension rod 1-3, an upper crossbeam 1-4, a vertical beam 1-5, a load-bearing crossbeam 1-6, a drive system bracket 1-7, a fixed beam 1-8, a side plate 1-9 and a fixed frame 1-10; the front crossbeam 1-1, the load-bearing crossbeam 1-6, the drive system bracket 1-7 and the fixed frame 1-10 are fixed to the two side plates 1-9 in sequence from front to back. The distance between the two side plates 1-9 is the working width of the machine, and the working width of the machine is 1700mm. The upper crossbeam 1-4 is fixedly connected to the top of the load-bearing crossbeam 1-6 through the vertical beam 1-5; three fixed beams 1-8 arranged horizontally along the longitudinal direction are fixedly connected to the rear end face of the upper crossbeam 1-4 and the fixed frame 1-10 at equal intervals; the three-point suspension frame 1-2 is fixedly connected to the front crossbeam 1-1; the suspension rod 1-3 is fixedly connected between the three-point suspension frame 1-2 and the upper crossbeam 1-4.

[0158] like Figure 3 As shown, the wringing and belt discharge device 2 includes a belt discharge mechanism 2-1 and a wringing and flow guiding mechanism 2-2.

[0159] The belt discharging mechanism 2-1 comprises a lead screw 2-1-1, a lead screw bearing 2-1-2 with a diamond seat, a slider 2-1-3, a sliding tongue 2-1-4, a slider connecting plate 2-1-5, a slide rail 2-1-6, a cross beam connecting block 2-1-7 and a lead screw driving sprocket 2-1-8; the longitudinal mounting position of the three cross beam connecting blocks 2-1-7 is adjustable and fixed to the three fixed beams 1-8; the two lead screws 2-1-1 are connected to the lead screw bearing 2-1-2 with a diamond seat by the guide rail 2-1-3. The guide rails 2-1-6 are installed on the crossbeam connection block 2-1-7 in a straight line; the guide rails 2-1-6 are installed on the crossbeam connection block 2-1-7 in parallel with the guide screws 2-1-1; the end of each guide screw 2-1-1 is fixedly connected to a guide screw driving sprocket 2-1-8; a slider 2-1-3 is provided on each guide screw 2-1-1 through a sliding tongue 2-1-4, and a slider connecting plate 2-1-5 slidably connected to the guide rails 2-1-6 is fixedly connected to each slider connecting plate 2-1-5. A wringing guide mechanism 2-2 is fixedly connected to the bottom end of each slider connecting plate 2-1-5.

[0160] The wringing guide mechanism 2-2 includes a wringing guide fixing plate 2-2-1, a wringing wheel mounting plate 2-2-2, a wringing wheel 2-2-3, a horizontal mounting frame 2-2-4, a transverse guide roller 2-2-5, a vertical guide roller 2-2-6 and an inclined mounting plate 2-2-7;

[0161] The wringing guide fixing plate 2-2-1 is fixed to the bottom end of the slider connecting plate 2-1-5; the upper ends of two vertically and parallelly arranged wringing wheel mounting plates 2-2-2 are fixed to the lower surface of the wringing guide fixing plate 2-2-1; two wringing wheels 2-2-3 arranged up and down and with adjustable spacing are installed between the two wringing wheel mounting plates 2-2-2; the middle part of the horizontal mounting frame 2-2-4 is fixed to the lower ends of the two wringing wheel mounting plates 2-2-2; the inclined mounting plate 2-2-7 is fixed to the horizontal mounting frame 2-2 -4; a pair of vertical guide rollers 2-2-6 arranged in parallel and at a certain distance are installed on the front and rear bottom plates of the horizontal mounting frame 2-2-4 and the inclined mounting plate 2-2-7; the lateral guide roller 2-2-5 is installed on the rear end of the horizontal mounting frame 2-2-4, protruding from the left and right side plates of the rear bottom plate, and is located between a pair of vertical guide rollers 2-2-6 on the rear bottom plate of the horizontal mounting frame 2-2-4 and a pair of vertical guide rollers 2-2-6 on the inclined mounting plate 2-2-7. The drip irrigation belt passes between the two vertical guide rollers 2-2-6 on the inclined mounting plate 2-2-7, passes between the lateral guide rollers 2-2-5 and the two vertical guide rollers 2-2-6 on the rear bottom plate of the horizontal mounting frame 2-2-4, enters between the two wringing wheels 2-2-3, and finally passes between the two vertical guide rollers 2-2-6 on the front bottom plate of the horizontal mounting frame 2-2-4, and is wound on the belt unloading device 4; during the belt winding process, the belt discharge mechanism 2-1 drives the wringing guide mechanism 2-2 to reciprocate left and right, and the two vertical guide rollers 2-2-6 on the inclined mounting plate 2-2-7 guide the drip irrigation belt. The horizontal guide roller 2-2-5 has the functions of guiding, reducing friction and limiting the drip irrigation belt; the two vertical guide rollers 2-2-6 on the rear bottom plate of the horizontal mounting frame 2-2-4 have the functions of guiding, reducing friction and limiting the drip irrigation belt, and ensure that the drip irrigation belt is located in the center of the gap between the upper and lower wringing wheels 2-2-3; the two wringing wheels 2-2-3 squeeze the drip irrigation belt to squeeze out the water inside it; the two vertical guide rollers 2-2-6 on the front bottom plate of the horizontal mounting frame 2-2-4 have the functions of limiting, reducing friction and preventing the drip irrigation belt from directly contacting the frame to produce shearing effect and causing belt breakage.

[0162] Preferably, the material of the lateral guide roller 2-2-5 and the vertical guide roller 2-2-6 is nylon.

[0163] Preferably, the wringing wheel 2-2-3 is made of polyurethane.

[0164] Preferably, the angle between the inclined mounting plate 2-2-7 and the horizontal plane is 30°.

[0165] The excavating device 7 is fixedly connected to the front ends of the two side plates 1-9; the walking depth limiting device 3 is height-adjustably installed at the rear ends of the two side plates 1-9.

[0166] like Figure 4 As shown, the walking depth limiting device 3 includes a walking wheel 3-1, a limiting roller 3-2, a support arm connecting block 3-3, a side plate connecting block 3-4, a depth limiting connecting rod 3-5, a fixed plate 3-6, a sealed bearing seat 3-7 and a support arm 3-8; the limiting roller 3-2 is arranged on the wheel axle between the two walking wheels 3-1, and a sealed bearing seat 3-7 is provided at both ends of the wheel axle; the front end of the sealed bearing seat 3-7 is fixedly connected to a support arm 3-8, and the front end of the support arm 3-8 is hinged to the support arm connecting block 3-3 fixedly connected to the side plate 1-9; the rear end of the sealed bearing seat 3-7 is fixedly connected to a fixed plate 3-6; the lower end of the vertically arranged depth limiting connecting rod 3-5 is fixedly connected to the fixed plate 3-6, and the upper end of the depth limiting connecting rod 3-5 is fixedly connected to the side plate connecting block 3-4 fixedly connected to the side plate 1-9 with an adjustable installation height.

[0167] like Figure 5 and Figure 6 As shown, the belt unloading device 4 includes an active belt bearing 4-1 with a diamond seat, a detachable belt mechanism 4-2, a lifting arm 4-3, a U-shaped card 4-4, a lifting arm connecting plate 4-5, a hydraulic cylinder 4-6, a hanging ear 4-7 and an unloading mechanism 4-8;

[0168] like Figure 7 As shown, the detachable tape reel mechanism 4-2 includes a fixed tape reel shaft 4-2-1, a tape reel driving sprocket 4-2-4, a flange 4-2-5, a conical reel 4-2-6, a reel mounting plate 4-2-7, a limiting disc 4-2-9, an active ratchet 4-2-11, a driven ratchet 4-2-12 and a movable tape reel shaft 4-2-13;

[0169] The two lifting arms 4-3 are hinged to the left and right ends of the upper crossbeam 1-4 through a rotating shaft 4-3-5 arranged at the top thereof and parallel to the longitudinal axis of the machine; the rotating shaft 4-3-5 is connected to the upper crossbeam 1-4 through a U-shaped card 4-4 and a lifting arm connecting plate 4-5; the cylinder ends of the two hydraulic cylinders 4-6 are hinged to the two hanging ears 4-7 fixedly connected to the upper crossbeam 1-4, and the ends of the telescopic rods are hinged to the lifting arms 4-3 on the same side; a movable tape reel shaft 4-2-13 is installed on the inner sides of the lower parts of the two lifting arms 4-3 through a driven tape reel bearing 4-3-10 with a rhombus seat; the fixed tape reel shaft 4-2-1 is horizontally installed on the vertical beam 1-5 through a pair of active tape reel bearings 4-1 with a rhombus seat; the two ends of the fixed tape reel shaft 4-2-1 extend to the left and right sides; Figure 5 As shown, when the telescopic rod of the hydraulic cylinder 4-6 is in the extended state, the two movable belt reel shafts 4-2-13 and the fixed belt reel shaft 4-2-1 are located on the same straight line. Figure 6As shown, when the telescopic rod of the hydraulic cylinder 4-6 is in a retracted state, the two movable winding shafts 4-2-13 rotate outward and separate from the fixed winding shaft 4-2-1, thereby realizing the unloading of the drip irrigation tape round bale.

[0170] A winding roller consisting of a flange 4-2-5, a conical winding drum 4-2-6, a winding drum mounting disk 4-2-7 and a limiting disk 4-2-9 is installed on the shaft bodies on the left and right sides of the fixed winding shaft 4-2-1 and the two movable winding shafts 4-2-13; the winding roller on the left shaft body of the fixed winding shaft 4-2-1 and the winding roller on the left movable winding shaft 4-2-13 are symmetrical to each other and together constitute a left winding monomer; the winding roller on the right shaft body of the fixed winding shaft 4-2-1 and the winding roller on the right movable winding shaft 4-2-13 are symmetrical to each other and together constitute a right winding monomer; wherein, the lower bottom surface of the conical winding drum 4-2-6 is fixedly connected to the winding drum mounting disk 4-2-7 as a whole; the flange 4- 2-5 and the cone reel 4-2-6 are located on both sides of the limiting disc 4-2-9 and are fixed by bolts; the reel mounting disc 4-2-7 is fixed to the limiting disc 4-2-9 by the fixing bolts 4-2-8; a driving ratchet 4-2-11 is fixed to the left and right axial ends of the fixed tape reel shaft 4-2-1, and a driven ratchet 4-2-12 is fixed to the axial ends of the two movable tape reel shafts 4-2-13; the driving ratchet 4-2-11 and the driven ratchet 4-2-12 are limited by the upper bottom surface of the cone reel 4-2-6 through the retaining ring 4-2-10; when the fixed tape reel shaft 4-2-1 and the movable tape reel shaft 4-2-13 are located in the same straight line, the driving ratchet 4-2-11 and the driven ratchet 4-2-12 are meshed with each other. The tape drive sprocket 4-2-4 is fixedly connected to the fixed tape shaft 4-2-1 and is located between the tape roller and the active tape bearing 4-1 with a diamond seat.

[0171] Preferably, a short shaft sleeve 4-2-2 is provided on the fixed tape shaft 4-2-1 between the tape drive sprocket 4-2-4 and the active tape bearing 4-1 with a diamond seat, so that the tape drive sprocket 4-2-4 is close to the flange 4-2-5; a long shaft sleeve 4-2-3 is provided on the fixed tape shaft 4-2-1 between the tape roller on the other side and the active tape bearing 4-1 with a diamond seat.

[0172] The unloading mechanism 4-8 is arranged below the detachable tape winding mechanism 4-2; the unloading mechanism 4-8 comprises a left slide plate 4-8-1, a right slide plate 4-8-2 and a slide plate support plate 4-8-3; the left slide plate 4-8-1 and the right slide plate 4-8-2, which are symmetrical on the left and right, are fixedly connected to the load-bearing beam 1-6 of the frame 1 by the slide plate support plate 4-8-3 with the inner side higher and the outer side lower, respectively corresponding to the left tape winding monomer and the right tape winding monomer, so as to realize the sliding of the drip irrigation tape round bundle.

[0173] like Figure 8As shown, the lifting arm 4-3 includes a lifting arm body 4-3-1, a bearing chamber mounting plate 4-3-2, a deep groove ball bearing 4-3-4, a rotating shaft 4-3-5, a connecting rod fixing plate 4-3-6, a main connecting rod 4-3-7 and a hinge bolt 4-3-9; L-shaped notches are opened on both sides of the top of the lifting arm body 4-3-1 and fixedly connected to the bearing chamber mounting plate 4-3-2 to form a bearing chamber 4-3-3; the rotating shaft 4-3-5 is installed in the bearing chamber 4-3-3 through the deep groove ball bearing 4-3-4; the connecting rod fixing plate 4-3-6 is fixedly connected to the outside of the lifting arm body 4-3-1, the lower end of the main connecting rod 4-3-7 is fixedly connected to the connecting rod fixing plate 4-3-6, and the upper end is provided with a hinge bolt 4-3-9 for hinged connection with the telescopic rod end of the hydraulic cylinder 4-6. A reinforcing plate 4-3-8 is provided on the main connecting rod 4-3-7.

[0174] like Fig. 9 and Fig.10 As shown, the shaking conveyor 5 includes a primary shaking conveyor 5-1 and a secondary shaking conveyor 5-2 which are arranged obliquely from front to back with the front lower and the back higher, and are used to remove the debris attached to the potatoes and transport the potatoes backwards; the front end of the secondary shaking conveyor 5-2 is located below the rear end of the primary shaking conveyor 5-1.

[0175] The first-stage shaking conveying device 5-1 includes a first-stage conveying chain 5-1-1, a first-stage support sprocket 5-1-2, a flower-shaped shaking wheel 5-1-4, a friction safety clutch 5-1-5, a first transmission sprocket 5-1-8, a first-stage driving gear 5-1-9, a first-stage driving shaft 5-1-10, a through-type bearing seat with a cover 5-1-11 and a second transmission sprocket 5-1-12.

[0176] A pair of primary sprocket wheels 5-1-2 are fixedly connected to the front part of the left and right side plates 1-9; the primary drive shaft 5-1-10 is installed in the middle part of the left and right side plates 1-9 through a through-type belt cover bearing seat 5-1-11; a pair of primary drive gears 5-1-9 are fixedly connected to the primary drive shaft 5-1-10; the primary conveying chain 5-1-1 is sleeved on the primary sprocket wheels 5-1-2 and the primary drive gear 5-1-9; the primary conveying chain 5-1-1 is composed of two primary chain belts 5-1-1-1 and a plurality of primary bars 5-1-1-2 uniformly fixed on the primary chain belts 5-1-1-1, wherein the primary chain belts 5-1-1-1 are in contact with the primary sprocket wheels 5-1-2, and the gear teeth of the primary drive gear 5-1-9 are meshed in the interval between two adjacent primary bars 5-1-1-2;

[0177] The flower-shaped shaking wheel 5-1-4 is arranged below the upper chain of the primary conveying chain 5-1-1. The flower-shaped shaking wheel 5-1-4 has a plurality of raised petals evenly distributed along the circumference. The tops of the raised petals are provided with grooves meshing with the primary rods 5-1-1-2, so that the upper chain of the primary conveying chain 5-1-1 generates an amplitude of 36 mm during rotation, thereby enabling potatoes and debris to be separated more effectively, helping materials to flow more smoothly on the conveying chain and avoiding blockage or stagnation.

[0178] The friction clutch 5-1-5 and the first transmission sprocket 5-1-8 are fixedly connected to the left end of the primary drive shaft 5-1-10; the second transmission sprocket 5-1-12 is fixedly connected to the right end of the primary drive shaft 5-1-10.

[0179] Preferably, a primary support wheel 5-1-3 and a primary support tube 5-1-6 fixedly connected to the left and right side plates 1-9 are provided below the upper chain of the primary conveying chain 5-1-1, so as to enable the upper chain of the primary conveying chain 5-1-1 to maintain good stability during rotation and reduce irregular shaking and friction.

[0180] Preferably, the primary shaking conveying device 5-1 is divided into two symmetrical shaking conveying units by an intermediate support plate 5-1-7, which is used to evenly distribute the load of excavated potatoes and soil, thereby improving the conveying efficiency and reducing equipment wear. The front end of the intermediate support plate 5-1-7 is fixedly connected to the excavating device 7, and the middle part is fixedly connected to the primary support pipe 5-1-6.

[0181] The secondary shaking conveying device 5-2 includes a secondary conveying chain 5-2-1, a secondary supporting sprocket 5-2-2, a strong shaking mechanism 5-2-3, a third transmission sprocket 5-2-5, a secondary driving shaft 5-2-11, a secondary driving gear 5-2-12 and a closed bearing seat with a cover 5-2-13;

[0182] A pair of secondary support sprockets 5-2-2 are fixedly connected to the middle of the left and right side plates 1-9, and are located below the rear end of the primary shaking conveyor 5-1; the secondary drive shaft 5-2-11 is installed at the rear of the left and right side plates 1-9 through a closed belt cover bearing seat 5-2-13; a pair of secondary drive gears 5-2-12 are fixedly connected to the secondary drive shaft 5-2-11; the secondary conveying chain 5-2-1 is sleeved on the secondary support sprockets 5-2-2 and the secondary drive gear 5-2-12; the secondary conveying chain 5-2-1 is composed of two secondary chain belts 5-2-1-3 and a plurality of secondary rods 5-2-1-1 uniformly fixed on the secondary chain belts 5-2-1-3, wherein the secondary chain belts 5-2-1-3 are in contact with the secondary support sprockets 5-2-2, and the gear teeth of the secondary drive gear 5-2-9 are meshed in the interval between two adjacent secondary rods 5-2-1-1. The third transmission sprocket 5-2-5 is fixedly connected to the left end of the secondary drive shaft 5-2-11, and is connected to the first transmission sprocket 5-1-8 through a transmission chain.

[0183] Preferably, a third secondary chain belt 5-2-1-3 is provided in the middle of the secondary conveying chain 5-2-1, and the third secondary chain belt 5-2-1-3 is fixedly connected to the secondary rod 5-2-1-1 through an intermediate clip 5-2-1-2.

[0184] The strong shaking mechanism 5-2-3 is arranged below the upper chain of the secondary conveying chain 5-2-1, and the strong shaking mechanism 5-2-3 includes a vertical seat bearing 5-2-3-1, a shaking wheel fixing plate 5-2-3-2, a shaking wheel 5-2-3-3, a strong shaking drive shaft 5-2-3-4 and a strong shaking drive sprocket 5-2-3-5; the strong shaking drive shaft 5-2-3-4 is installed on the left and right side plates through the vertical seat bearing 5-2-3-1 1-9; a plurality of shaking wheel fixing plates 5-2-3-2 are arranged at equal intervals on the strong shaking drive shaft 5-2-3-4, the middle part of the shaking wheel fixing plate 5-2-3-2 is fixedly connected to the strong shaking drive shaft 5-2-3-4, and a shaking wheel 5-2-3-3 is installed at both ends; the strong shaking drive sprocket 5-2-3-5 is fixedly connected to the right end of the strong shaking drive shaft 5-2-3-4, and is connected to the second transmission sprocket 5-1-12 through a transmission chain. Under the rotation of the strong shaking drive shaft 5-2-3-4, the shaking wheel 5-2-3-3 performs a circular motion, continuously impacting the secondary conveying chain 5-2-1, so that the secondary conveying chain 5-2-1 produces an up and down amplitude, which is used to break soil aggregates.

[0185] Preferably, the rear portion of the secondary shaking conveying device 5-2 is provided with an "eight"-shaped flow guide guard plate 5-2-6 and a potato collecting plate 5-2-7 fixedly connected to the left and right side plates 1-9.

[0186] Preferably, a secondary support tube 5-2-8 is provided below the upper chain of the secondary conveying chain 5-2-1, and a secondary support wheel 5-2-9 is installed on the secondary support tube 5-2-8 through a support wheel bracket 5-2-10, so as to enable the upper chain of the secondary conveying chain 5-3-1 to maintain good stability during rotation and reduce irregular jitter and friction.

[0187] Preferably, an adjustable support mechanism 5-2-4 is provided at the lower rear part of the upper chain of the secondary conveying chain 5-2-1, which is used to adjust the inclination and rising angle of the secondary conveying chain 5-2-1; the adjustable support mechanism 5-2-4 comprises a crank 5-2-4-1, a connecting rod 5-2-4-2, an adjustable support wheel 5-2-4-3, a support wheel fixing plate 5-2-4-4 and a support rod 5-2-4-5; a plurality of support wheel fixing plates 5-2-4-4 are fixedly connected to the support rod 5-2-4-5 at equal intervals, and a plurality of support wheel fixing plates 5-2-4-4 are installed on the support wheel fixing plate 5-2-4-4. The adjustable support wheel 5-2-4-3 for supporting the secondary conveyor chain 5-2-1; the left and right ends of the support rod 5-2-4-5 are fixed with a crank 5-2-4-1, and the crank 5-2-4-1 is adjustable and hinged with the connecting rod 5-2-4-2 fixed on the left and right side plates 1-9 through the hinge bolt hinge position; different hinge positions make the support rod 5-2-4-5 have different horizontal heights, thereby realizing the adjustment of the inclination and rising angle of the secondary conveyor chain 5-2-1, and at the same time, the vibration amplitude of the secondary conveyor chain 5-2-1 under the action of the strong shaking mechanism can be changed accordingly. The inclination and rising angle range of the secondary conveyor chain 5-2-1 is 10°~20°.

[0188] Preferably, the inclined rising angle of the primary conveying chain 5-1-1 is 21°; the inclined rising angle of the secondary conveying chain 5-2-1 is 14°.

[0189] like Fig.11 As shown, the drive system 6 includes a spline coupling 6-1-1, a gearbox 6-1-2, a gearbox power output shaft 6-1-3, a covered vertical bearing seat 6-1-4, an output shaft drive sprocket 6-1-5, an input shaft drive sprocket 6-1-6, a chain 6-1-7, an oil pump drive sprocket 6-1-8, a vertical bearing seat 6-1-9, an oil pump 6-2-1, an oil tank 6-2-4, a hydraulic diverter 6-2-5, a hydraulic speed regulating valve 6-2-6, a wringing and draining hydraulic motor 6-2-7, an oil return line assembly 6-2-8, a flange coupling 6-2-10, a double-row sprocket 6-2-11, a square bearing seat 6-2-12, an oil pipe 6-2-15, an electromagnetic proportional flow valve 6-3-1, a winding hydraulic motor 6-3-2, a torque sensor 6-3-3, a shaft sprocket 6-3-4 and a controller 6-3-6.

[0190] Among them, one end of the spline coupling 6-1-1 is connected to the power input shaft of the gearbox 6-1-2 fixedly connected to the front part of the frame 1, and the other end is connected to the power output shaft of the tractor, providing a power source for the whole machine; the gearbox power output shaft 6-1-3 is installed on the frame 1 through a covered vertical seat bearing 6-1-4; the output shaft drive sprocket 6-1-5 is fixedly connected to the gearbox power output shaft 6-1-3, and is connected to the sprocket on the friction safety clutch 5-1-5 through a transmission chain, driving the primary drive shaft 5-1-10 to rotate; the input shaft drive sprocket 6-1-6 is fixedly connected to the power input shaft of the gearbox 6-1-2, and is connected to the oil pump drive sprocket 6-1-8 fixedly connected to the drive shaft of the oil pump 6-2-1 through a chain 6-1-7, and the drive shaft of the oil pump 6-2-1 is installed on the frame 1 through a vertical bearing seat 6-1-9.

[0191] The oil pump 6-2-1 and the hydraulic diverter 6-2-5 are fixedly connected to the frame 1 through the "Z" support plate 6-2-2; the oil tank 6-2-4 is fixedly connected to the frame 1 through the oil tank bracket 6-2-3; the wringing and draining hydraulic motor 6-2-7 and the winding hydraulic motor 6-3-2 are fixedly connected to the rear and middle of the frame 1 through the motor support plate 6-2-9 and the slotted positioning plate 6-2-14 fixed to the frame 1; the axles of the double-row sprocket 6-2-11 and the belt shaft sprocket 6-3-4 are respectively installed at the rear and middle of the frame 1 through the square bearing seat 6-2-12 and the bearing seat support plate 6-2-13; the torque sensor 6-3-3 is installed in the middle of the frame 1 through the sensor support plate 6-3-5, located between the winding hydraulic motor 6-3-2 and the belt shaft sprocket 6-3-4; The power output shaft of the hydraulic motor 6-2-7 is fixedly connected to the axle of the double-row sprocket 6-2-11 through a flange coupling 6-2-10; the double-row sprocket 6-2-11 is connected to the two screw drive sprockets 2-1-8 of the wringing and discharging device 2 through a transmission chain, driving the screw 2-1-1 to rotate; the two ends of the torque sensor 6-3-3 are fixedly connected to the power output shaft of the belt winding hydraulic motor 6-3-2 and the axle of the belt shaft sprocket 6-3-4 through a flange coupling 6-2-10; the belt shaft sprocket 6-3-4 is connected to the belt winding drive sprocket 4-2-4 through a transmission chain, driving the fixed belt winding shaft 4-2-1 to rotate; the controller 6-3-6 is fixedly connected to the frame 1 through the controller bracket 6-3-7, and the controller 6-3-6 is respectively connected to the torque sensor 6-3-3 and the electromagnetic proportional flow valve 6-3-1.

[0192] The oil inlet of the oil pump 6-2-1 is connected to the oil tank 6-2-4 through an oil pipe 6-2-15, and the oil outlet of the oil pump 6-2-1 is connected to the hydraulic diverter 6-2-5 through an oil pipe; the equal oil pressure port and the equal flow port of the hydraulic diverter 6-2-5 are respectively connected to the oil inlet of the hydraulic speed regulating valve 6-2-6 and the oil inlet of the electromagnetic proportional flow valve 6-3-1 through oil pipes; the oil outlet of the hydraulic speed regulating valve 6-2-6 is connected to the oil inlet of the wringing and draining hydraulic motor 6-2-7 through an oil pipe; The oil outlet of the electromagnetic proportional flow valve 6-3-1 is connected to the oil inlet of the belt winding hydraulic motor 6-3-2; the oil inlet of the return oil circuit assembly 6-2-8 is connected to the oil return port of the wringing and draining hydraulic motor 6-2-7, the oil return port of the belt winding hydraulic motor 6-3-2, the oil return port of the hydraulic speed control valve 6-2-6, and the overflow port of the electromagnetic proportional flow valve 6-3-1 through oil pipes, and the oil outlet of the return oil circuit assembly 6-2-8 is connected to the oil inlet of the oil tank 6-2-4 through an oil pipe to complete the circulation of the oil circuit.

[0193] As the diameter of the drip tape bale continues to increase, the linear speed of its outer edge is also increasing, while the forward speed of the operating machine needs to remain unchanged due to the potato digging and separation work. This causes the detachable tape winding mechanism 4-2 to be subjected to increasing tension from the drip tape, and its torque becomes larger and larger, resulting in tape breakage. When the torque value detected by the torque sensor 6-3-3 exceeds the set limit, the output electrical signal is transmitted to the controller 6-3-6. The signal processing module in the controller 6-3-6 converts the electrical signal into a digital signal and transmits it to the single-chip microcomputer in the controller 6-3-6 for real-time processing. The single-chip microcomputer controls the proportional movement of the valve body inside the electromagnetic proportional flow valve 6-3-1 according to the preset value, thereby reducing the flow and pressure of the hydraulic oil, thereby controlling the speed of the tape winding hydraulic motor to decrease; otherwise, the motor speed is increased to achieve electro-hydraulic control.

[0194] Among them, the spline coupling 6-1-1, the gearbox 6-1-2, the gearbox power output shaft 6-1-3, the covered vertical bearing seat 6-1-4, the output shaft drive sprocket 6-1-5, the input shaft drive sprocket 6-1-6, the chain 6-1-7, the oil pump drive sprocket 6-1-8, the vertical bearing seat 6-1-9, the double-row sprocket 6-2-11 and the shaft sprocket 6-3-4 constitute the mechanical system 6-1.

[0195] The oil pump 6-2-1, the oil tank 6-2-4, the hydraulic flow divider 6-2-5, the hydraulic speed regulating valve 6-2-6, the belt wringing and discharging hydraulic motor 6-2-7, the belt winding hydraulic motor 6-3-2, the oil return line assembly 6-2-8, and the oil pipe 6-2-15 constitute the hydraulic system 6-2.

[0196] The electromagnetic proportional flow valve 6-3-1, the torque sensor 6-3-3 and the controller 6-3-6 constitute the torque detection and adjustment hydraulic system 6-3.

[0197] like Fig.12 As shown, the excavating device 7 includes a short shovel 7-1, a long shovel 7-2, and a shovel seat 7-3, wherein the long shovel 7-2 and the short shovel 7-1 have countersunk slots, and the shovel tips have blade angles. The shovel seat 7-3 is fixedly connected to the shovel by countersunk bolts and welded to the frame 1.

[0198] like Fig.13 and Fig.14 As shown, the working process of the present invention is as follows:

[0199] 1-2 weeks before harvest, use a seedling-killing machine to kill the seedlings, leaving 10 cm-20 cm of stubble.

[0200] Before operation, the tractor is connected to the implement through the three-point suspension system, and the implement is lifted by the tractor's hydraulic system. The spline coupling 6-1-1 is connected to the tractor's power output shaft; the oil inlet and outlet of the hydraulic cylinder 4-6 are connected to the oil inlet and outlet of the tractor's hydraulic system respectively, the tractor's hydraulic system is started to provide power to the hydraulic cylinder 4-6, and it is checked whether it can work normally;

[0201] Adjust the tractor hydraulic pressure to slowly lower the implement until the excavation device 7 is close to the ground surface, then let the tractor pull the implement forward, and at the same time make the tractor's hydraulic system generate downward pressure, so that the limit roller 3-2 is close to the ground surface after the implement is working, so as to ensure that the excavation device 7 goes into the ground at a consistent working depth; under the action of traction, the excavation device 7 cuts into the ground surface at a certain angle, and excavates and transports the potatoes 10cm-15cm away from the ground surface and the drip irrigation tape 3-5cm away from the ground surface mixed with potato vines, weeds, and soil blocks to the shaking conveying device 5 connected thereto;

[0202] During the forward movement of the machine, the mixture of potatoes, soil, seedlings, weeds and drip irrigation tape is first conveyed to the primary conveyor chain 5-1-1. At this time, the tractor power output power provides power for the primary drive gear 5-1-9, and the primary conveyor chain 5-1-1 matched with it starts to circulate and generate an oblique upward conveying force; at the same time, the primary rod 5-1-1-2 fixedly installed on the primary conveyor chain 5-1-1 produces an up and down shaking effect under the action of the flower-shaped shaking wheel 5-1-4, and the mixture collides with the rod 5-1-1-2 under the action of the shaking, so that most of the soil is screened and falls back to the surface through the gaps between the rods. The unseparated mixture is continuously thrown to the secondary conveying chain 5-2-1, and is further screened by the secondary rod 5-2-1-1 and the strong shaking mechanism 5-2-2 on the secondary conveying chain 5-2-1 under the conveying and shaking action from the upper side. When the mixture is conveyed to the "eight" shaped guide guard plate 5-2-5 at the tail of the secondary conveying chain 5-2-1, it is gathered under its guide, and the coverage area of ​​the mixture is from wide to narrow. Then, the gathering action of the potato collecting plate 5-2-6 cooperates with the forward movement of the machine to collect the screened potatoes, soil blocks, potato vines, weeds and drip irrigation belt strips, and then spread them on the surface to facilitate the subsequent picking operation.

[0203] When potatoes, soil blocks, potato vines, weeds and drip irrigation tape strips are laid on the ground, the flame is turned off and the operation is stopped. The drip irrigation tape in the paving mixture is manually passed through the frame 1, the wringer wheel 2-2-3 and fastened to the detachable winding mechanism 4-2. Then the torque detection and adjustment hydraulic system 6-3 is started to supply power to the electromagnetic proportional flow valve 6-3-1, the torque sensor 6-3-3 and the controller 6-3-6 to put them into the standby state, and the electromagnetic proportional flow valve 6-3-1 and the hydraulic speed regulating valve 6-2-6 are opened.

[0204] The tractor is started to continue to work, and the remaining potato, soil, seedling and grass mixture that has not been gathered and laid on the shaking conveying device 5 continues to be shaken and separated by the action of the primary conveying chain 5-1-1 and the secondary conveying chain 5-2-1, and then transported to the guide guard plate 5-2-5 and the potato collecting plate 5-2-6 for gathering and laying; at the same time, the tractor power output shaft provides power for the oil pump 6-2-1, extracts the hydraulic oil in the oil tank 6-2-4, and sends it to the hydraulic diverter 6-2-5; the hydraulic diverter 6-2-5 divides the hydraulic oil into two, so that the hydraulic oil of the same pressure and flow rate passes through the electromagnetic proportional flow valve 6-3-1 and the hydraulic speed regulating valve 6-2-6 respectively, and then is transported to the belt winding hydraulic motor 6-3-2 to provide the required working speed for the detachable belt winding mechanism 4-2, and the belt winding operation is started, and at the same time, it is also transported to the wringing and discharging hydraulic motor 6-2-7 to provide the required working speed for the wringing and discharging device 2, and the belt discharging operation is started;

[0205] During the operation of the detachable tape winding mechanism 4-2, the torque sensor 6-3-3 performs real-time dynamic monitoring of the torque it is subjected to. The signal processing module in the controller 6-3-6 decodes the signal output by the sensor into a digital signal and transmits it to the single-chip microcomputer in the controller 6-3-6. The single-chip microcomputer calculates the optimal operating speed of the detachable tape winding mechanism 4-2 according to the real-time torque value and the preset torque and speed comparison parameters, and outputs a control signal to adjust the electromagnetic proportional flow valve 6-3-1 to proportionally change the flow and direction of the hydraulic pressure in and out of the tape winding hydraulic motor 6-3-2, thereby controlling the speed of the hydraulic motor and realizing automatic control of the speed of the detachable tape winding mechanism 4-2 to prevent the tape breaking caused by the mismatch between the tape winding line speed and the forward speed of the machine; according to the operating speed of the detachable tape winding mechanism 4-2, the hydraulic speed regulating valve 6-2-6 is adjusted to control the tape discharge rate of the wringing and discharge device 2, so that the drip irrigation tape forms neatly arranged, uniformly and tightly packed round bundles, which is convenient for subsequent unloading and recycling.

[0206] With the cooperation of the detachable belt winding mechanism 4-2 and the wringing and draining device 2, the diameter of the drip irrigation tape bale continues to increase. When it is observed that the diameter of the bale is less than 2 cm from the diameter of the limit disk 4-2-9, the machine stops working and starts the hydraulic cylinder 4-6 to retract it, while the lifting arm 4-3 connected thereto lifts the detachable belt winding mechanism 4-2 on both sides obliquely upward, so that the drip irrigation tape bale falls to the slide plate 4-8-1 under the action of gravity and finally slides to the ground surface; after unloading is completed, the hydraulic cylinder 4-6 is started to extend, so that the machine returns to its initial state and starts a new round of operation; during the forward movement of the machine, potatoes, soil, potato vines and weeds can be dug, shaken, separated and laid, and the drip irrigation tape can be rolled up, arranged, unloaded and recycled at the same time.

Claims

1. A multi-drive potato digging and drip irrigation tape recovery combined operation machine, characterized in that: The combined operation machine comprises a frame (1), and a wringing and discharging device (2), a walking depth limiting device (3), a belt winding self-unloading device (4), a shaking conveying device (5), a driving system (6) and an excavating device (7) installed on the frame (1); The frame (1) comprises a front crossbeam (1-1), a three-point suspension frame (1-2), a suspension pull rod (1-3), an upper crossbeam (1-4), a vertical beam (1-5), a load-bearing crossbeam (1-6), a drive system bracket (1-7), a fixed beam (1-8), a side plate (1-9) and a fixed frame (1-10); the front crossbeam (1-1), the load-bearing crossbeam (1-6), the drive system bracket (1-7) and the fixed frame (1-10) are fixedly connected in sequence from front to back. On two side plates (1-9); the upper crossbeam (1-4) is fixedly connected to the upper part of the load-bearing crossbeam (1-6) through a vertical beam (1-5); three fixed beams (1-8) arranged horizontally in the longitudinal direction are fixedly connected to the rear end surface of the upper crossbeam (1-4) and the fixed frame (1-10) at equal intervals; the three-point suspension frame (1-2) is fixedly connected to the front crossbeam (1-1); the suspension pull rod (1-3) is fixedly connected between the three-point suspension frame (1-2) and the upper crossbeam (1-4); The wringing and belt discharge device (2) comprises a belt discharge mechanism (2-1) and a wringing and flow guiding mechanism (2-2); The belt discharging mechanism (2-1) comprises a lead screw (2-1-1), a lead screw bearing with a diamond seat (2-1-2), a slider (2-1-3), a sliding tongue (2-1-4), a slider connecting plate (2-1-5), a slide rail (2-1-6), a crossbeam connecting block (2-1-7) and a lead screw driving sprocket (2-1-8); the three crossbeam connecting blocks (2-1-7) are fixedly connected to the three fixed beams (1-8) in an adjustable longitudinal installation position; the two lead screws (2-1-1) are installed in the same straight line on the crossbeam connecting block (2-1-2) through the lead screw bearing with a diamond seat (2-1-2). -7); the slide rail (2-1-6) is installed on the crossbeam connection block (2-1-7) parallel to the lead screw (2-1-1); the end of each lead screw (2-1-1) is fixedly connected to a lead screw driving sprocket (2-1-8); a slider (2-1-3) is provided on each lead screw (2-1-1) through a sliding tongue (2-1-4), and each slider (2-1-3) is fixedly connected to a slider connecting plate (2-1-5) slidably connected to the slide rail (2-1-6); the bottom end of each slider connecting plate (2-1-5) is fixedly connected to a wringing guide mechanism (2-2); The wringing guide mechanism (2-2) comprises a wringing guide fixing plate (2-2-1), a wringing wheel mounting plate (2-2-2), a wringing wheel (2-2-3), a horizontal mounting frame (2-2-4), a transverse guide roller (2-2-5), a vertical guide roller (2-2-6) and an inclined mounting plate (2-2-7); The wringing guide fixing plate (2-2-1) is fixedly connected to the bottom end of the slider connecting plate (2-1-5); the upper ends of two vertically and parallelly arranged wringing wheel mounting plates (2-2-2) are fixedly connected to the lower surface of the wringing guide fixing plate (2-2-1); two wringing wheels (2-2-3) arranged up and down and with adjustable spacing are installed between the two wringing wheel mounting plates (2-2-2); the middle part of the horizontal mounting frame (2-2-4) is fixedly connected to the lower ends of the two wringing wheel mounting plates (2-2-2); the inclined mounting plate (2-2-7) is fixedly connected to the horizontal mounting frame (2-2 -4); a pair of vertical guide rollers (2-2-6) arranged in parallel and spaced a certain distance apart are installed on the front and rear bottom plates of the horizontal mounting frame (2-2-4) and the inclined mounting plate (2-2-7); the lateral guide rollers (2-2-5) are installed at the rear end of the horizontal mounting frame (2-2-4) and protrude on the left and right side plates of the rear bottom plate, and are located between the pair of vertical guide rollers (2-2-6) on the rear bottom plate of the horizontal mounting frame (2-2-4) and the pair of vertical guide rollers (2-2-6) on the inclined mounting plate (2-2-7); The excavating device (7) is fixedly connected to the front ends of the two side plates (1-9); the walking depth limiting device (3) is height-adjustably installed at the rear ends of the two side plates (1-9); The belt self-unloading device (4) comprises an active belt bearing with a diamond-shaped seat (4-1), a detachable belt winding mechanism (4-2), a lifting arm (4-3), a U-shaped card (4-4), a lifting arm connecting plate (4-5), a hydraulic cylinder (4-6), a hanging ear (4-7) and an unloading mechanism (4-8); The detachable tape reel mechanism (4-2) comprises a fixed tape reel shaft (4-2-1), a tape reel driving sprocket (4-2-4), a flange (4-2-5), a cone reel (4-2-6), a reel mounting plate (4-2-7), a limiting disc (4-2-9), an active ratchet (4-2-11), a driven ratchet (4-2-12) and a movable tape reel shaft (4-2-13); The two lifting arms (4-3) are hinged to the left and right ends of the upper crossbeam (1-4) through a rotating shaft (4-3-5) arranged at the top of the two lifting arms and parallel to the longitudinal axis of the machine; the rotating shaft (4-3-5) is connected to the upper crossbeam (1-4) through a U-shaped clamp (4-4) and a lifting arm connecting plate (4-5); the cylinder ends of the two hydraulic cylinders (4-6) are hinged to two hanging ears (4-7) fixed to the upper crossbeam (1-4), and the ends of the telescopic rods are hinged to the lifting arms (4-3) on the same side; the lower inner sides of the two lifting arms (4-3) are both equipped with a movable belt winding shaft through a driven belt winding bearing (4-3-10) with a rhombus seat (4-2-13); the fixed tape reel shaft (4-2-1) is horizontally mounted on the vertical beam (1-5) via a pair of active tape reel bearings (4-1) with diamond seats; the two ends of the fixed tape reel shaft (4-2-1) extend to the left and right sides; when the telescopic rod of the hydraulic cylinder (4-6) is in an extended state, the two movable tape reel shafts (4-2-13) are located on the same straight line as the fixed tape reel shaft (4-2-1); when the telescopic rod of the hydraulic cylinder (4-6) is in a retracted state, the two movable tape reel shafts (4-2-13) rotate outwards and separate from the fixed tape reel shaft (4-2-1), thereby realizing the unloading of the drip irrigation tape round bale; A tape reel consisting of a flange (4-2-5), a conical reel (4-2-6), a reel mounting plate (4-2-7) and a limiting disc (4-2-9) is installed on the shaft bodies on the left and right sides of the fixed tape reel shaft (4-2-1) and the two movable tape reel shafts (4-2-13); the tape reel on the left shaft body of the fixed tape reel shaft (4-2-1) and the tape reel on the left movable tape reel shaft (4-2-13) are mutually opposed. The tape roller on the right side of the fixed tape shaft (4-2-1) and the tape roller on the right side of the movable tape shaft (4-2-13) are symmetrical to each other and together constitute a right tape shaft; wherein the lower bottom surface of the conical drum (4-2-6) is fixedly connected to the drum mounting plate (4-2-7) as a whole; the flange (4-2-5) and the conical drum (4-2-6) are fixedly connected to the limiting disk (4-2-9) The reel mounting plate (4-2-7) is fixedly connected to the limiting disc (4-2-9) via a fixing bolt (4-2-8); a driving ratchet (4-2-11) is fixedly connected to the left and right shaft ends of the fixed tape reel shaft (4-2-1); and a driven ratchet (4-2-12) is fixedly connected to the shaft ends of the two movable tape reel shafts (4-2-13); the driving ratchet (4-2-11) and the driven ratchet (4-2-12) are connected via a retaining ring ( The upper bottom surface of the tape reel (4-2-6) and the tape reel (4-2-10) cooperate to limit the position; when the fixed tape reel shaft (4-2-1) and the movable tape reel shaft (4-2-13) are located in the same straight line, the active ratchet (4-2-11) and the driven ratchet (4-2-12) are meshed with each other; the tape drive sprocket (4-2-4) is fixedly connected to the fixed tape reel shaft (4-2-1) and is located between the tape reel drum and the active tape reel bearing (4-1) with a rhombus seat; The unloading mechanism (4-8) is arranged below the detachable tape winding mechanism (4-2); the unloading mechanism (4-8) comprises a left slide plate (4-8-1), a right slide plate (4-8-2) and a slide plate support plate (4-8-3); the left slide plate (4-8-1) and the right slide plate (4-8-2) are fixedly connected to the load-bearing beam (1-6) of the frame (1) via the slide plate support plate (4-8-3) with the inner side higher and the outer side lower, respectively corresponding to the left tape winding unit and the right tape winding unit, so as to realize the sliding of the drip irrigation tape round bundle; The shaking conveyor device (5) comprises a primary shaking conveyor device (5-1) and a secondary shaking conveyor device (5-2) which are arranged in a slanted manner from front to back, with the front being lower and the rear being higher, and are used to remove dirt attached to the potatoes and transport the potatoes backwards; the front end of the secondary shaking conveyor device (5-2) is located below the rear end of the primary shaking conveyor device (5-1); The primary shaking conveying device (5-1) comprises a primary conveying chain (5-1-1), a primary supporting sprocket wheel (5-1-2), a flower-shaped shaking wheel (5-1-4), a friction safety clutch (5-1-5), a first transmission sprocket wheel (5-1-8), a primary driving gear (5-1-9), a primary driving shaft (5-1-10), a through-type bearing seat with a cover (5-1-11) and a second transmission sprocket wheel (5-1-12); A pair of primary sprocket wheels (5-1-2) are fixedly connected to the front of the left and right side plates (1-9); the primary drive shaft (5-1-10) is installed in the middle of the left and right side plates (1-9) through a through-type bearing seat with a cover (5-1-11); a pair of primary drive gears (5-1-9) are fixedly connected to the primary drive shaft (5-1-10); the primary conveying chain (5-1-1) is sleeved on the primary sprocket wheels (5-1-2) and the primary drive gear (5-1- 9); the primary conveying chain (5-1-1) is composed of two primary chain belts (5-1-1-1) and a plurality of primary bars (5-1-1-2) uniformly fixed on the primary chain belts (5-1-1-1), wherein the primary chain belt (5-1-1-1) is in contact with the primary sprocket wheel (5-1-2), and the gear teeth of the primary driving gear (5-1-9) are meshed in the interval between two adjacent primary bars (5-1-1-2); The flower-shaped shaking wheel (5-1-4) is arranged below the upper chain of the primary conveying chain (5-1-1), and has a plurality of convex petals evenly distributed along the circumference, and the tops of the convex petals are provided with grooves meshing with the primary bars (5-1-1-2), so that the upper chain of the primary conveying chain (5-1-1) generates a certain amplitude during the rotation process; The friction clutch (5-1-5) and the first transmission sprocket (5-1-8) are fixedly connected to the left end of the primary drive shaft (5-1-10); the second transmission sprocket (5-1-12) is fixedly connected to the right end of the primary drive shaft (5-1-10); The secondary shaking conveying device (5-2) comprises a secondary conveying chain (5-2-1), a secondary supporting sprocket (5-2-2), a strong shaking mechanism (5-2-3), a third transmission sprocket (5-2-5), a secondary driving shaft (5-2-11), a secondary driving gear (5-2-12) and a closed bearing seat with a cover (5-2-13); A pair of secondary sprocket wheels (5-2-2) are fixedly connected to the middle of the left and right side plates (1-9) and are located below the rear end of the primary shaking conveying device (5-1); the secondary driving shaft (5-2-11) is installed at the rear of the left and right side plates (1-9) through a closed bearing seat with a cover (5-2-13); a pair of secondary driving gears (5-2-12) are fixedly connected to the secondary driving shaft (5-2-11); the secondary conveying chain (5-2-1) is sleeved on the secondary sprocket wheels (5-2-2) and the secondary driving gear (5-2-12); the secondary conveying chain (5-2-1 ) is composed of two secondary chain belts (5-2-1-3) and a plurality of secondary rods (5-2-1-1) uniformly fixed on the secondary chain belts (5-2-1-3), wherein the secondary chain belts (5-2-1-3) are in contact with the secondary support sprocket (5-2-2), and the gear teeth of the secondary drive gear (5-2-9) are meshed in the interval between two adjacent secondary rods (5-2-1-1); the third transmission sprocket (5-2-5) is fixed to the left end of the secondary drive shaft (5-2-11), and is connected to the first transmission sprocket (5-1-8) through a transmission chain; The strong shaking mechanism (5-2-3) is arranged below the upper chain of the secondary conveying chain (5-2-1), and the strong shaking mechanism (5-2-3) comprises a belt vertical seat bearing (5-2-3-1), a shaking wheel fixing plate (5-2-3-2), a shaking wheel (5-2-3-3), a strong shaking drive shaft (5-2-3-4) and a strong shaking drive sprocket (5-2-3-5); the strong shaking drive shaft (5-2-3-4) is installed on the left and right sides through the belt vertical seat bearing (5-2-3-1) Plate (1-9); a plurality of shaking wheel fixing plates (5-2-3-2) are arranged at equal intervals on the strong shaking drive shaft (5-2-3-4); the middle part of the shaking wheel fixing plate (5-2-3-2) is fixedly connected to the strong shaking drive shaft (5-2-3-4), and a shaking wheel (5-2-3-3) is installed at both ends; the strong shaking drive sprocket (5-2-3-5) is fixedly connected to the right end of the strong shaking drive shaft (5-2-3-4), and is connected to the second transmission sprocket (5-1-12) through a transmission chain; The drive system (6) comprises a spline coupling (6-1-1), a gearbox (6-1-2), a gearbox power output shaft (6-1-3), a covered vertical bearing seat (6-1-4), an output shaft drive sprocket (6-1-5), an input shaft drive sprocket (6-1-6), a chain (6-1-7), an oil pump drive sprocket (6-1-8), a vertical bearing seat (6-1-9), an oil pump (6-2-1), an oil tank (6-2-4), a hydraulic diverter (6-2- 5), hydraulic speed regulating valve (6-2-6), wringing and discharging hydraulic motor (6-2-7), oil return line assembly (6-2-8), flange coupling (6-2-10), double-row sprocket (6-2-11), square bearing seat (6-2-12), oil pipe (6-2-15), electromagnetic proportional flow valve (6-3-1), winding hydraulic motor (6-3-2), torque sensor (6-3-3), shaft sprocket (6-3-4) and controller (6-3-6); One end of the spline coupling (6-1-1) is connected to the power input shaft of the gearbox (6-1-2) fixedly connected to the front of the frame (1), and the other end is connected to the tractor power output shaft, providing a power source for the whole machine; the gearbox power output shaft (6-1-3) is installed on the frame (1) through a hooded vertical seat bearing (6-1-4); the output shaft drive sprocket (6-1-5) is fixedly connected to the gearbox power output shaft (6-1-3) and is driven by a transmission chain. The input shaft driving sprocket (6-1-6) is connected to the sprocket on the friction safety clutch (5-1-5) to drive the primary driving shaft (5-1-10) to rotate; the input shaft driving sprocket (6-1-6) is fixedly connected to the power input shaft of the gearbox (6-1-2), and is connected to the oil pump driving sprocket (6-1-8) fixedly connected to the driving shaft of the oil pump (6-2-1) through a chain (6-1-7); the driving shaft of the oil pump (6-2-1) is installed on the frame (1) through a vertical bearing seat (6-1-9); The oil pump (6-2-1) and the hydraulic flow divider (6-2-5) are fixedly connected to the frame (1) via a "Z" support plate (6-2-2); the oil tank (6-2-4) is fixedly connected to the frame (1) via an oil tank bracket (6-2-3); the belt wringing and discharging hydraulic motor (6-2-7) and the belt winding hydraulic motor (6-3-2) are fixedly connected to the frame (1) via a motor support plate (6-2-9) and a slotted positioning plate (6-2-14) fixedly connected to the frame (1). ); the axles of the double-row sprocket (6-2-11) and the belt shaft sprocket (6-3-4) are respectively installed at the rear and middle of the frame (1) through a square bearing seat (6-2-12) and a bearing seat support plate (6-2-13); the torque sensor (6-3-3) is installed in the middle of the frame (1) through a sensor support plate (6-3-5), and is located between the belt winding hydraulic motor (6-3-2) and the belt shaft sprocket (6-3-4); the twisting The power output shaft of the dry belt hydraulic motor (6-2-7) is fixedly connected to the wheel shaft of the double-row sprocket (6-2-11) through a flange coupling (6-2-10); the double-row sprocket (6-2-11) is connected to two screw drive sprockets (2-1-8) of the dry belt device (2) through a transmission chain to drive the screw (2-1-1) to rotate; the two ends of the torque sensor (6-3-3) are connected to the belt hydraulic motor (6-2-10) through a flange coupling (6-2-10). The power output shaft of the belt shaft sprocket (6-3-4) is fixedly connected to the wheel shaft of the belt shaft sprocket (6-3-4); the belt shaft sprocket (6-3-4) is connected to the belt drive sprocket (4-2-4) through a transmission chain to drive the fixed belt shaft (4-2-1) to rotate; the controller (6-3-6) is fixedly connected to the frame (1) through a controller bracket (6-3-7), and the controller (6-3-6) is respectively connected to the torque sensor (6-3-3) and the electromagnetic proportional flow valve (6-3-1); The oil inlet of the oil pump (6-2-1) is connected to the oil tank (6-2-4) through an oil pipe (6-2-15), and the oil outlet of the oil pump (6-2-1) is connected to the hydraulic flow divider (6-2-5) through an oil pipe; the equal oil pressure port and the equal flow port of the hydraulic flow divider (6-2-5) are respectively connected to the oil inlet of the hydraulic speed regulating valve (6-2-6) and the oil inlet of the electromagnetic proportional flow valve (6-3-1) through oil pipes; the oil outlet of the hydraulic speed regulating valve (6-2-6) is connected to the oil inlet of the wringing and belt-extracting hydraulic motor (6-2-7) through an oil pipe. The oil outlet of the electromagnetic proportional flow valve (6-3-1) is connected to the oil inlet of the belt winding hydraulic motor (6-3-2); the oil inlet of the oil return circuit assembly (6-2-8) is respectively connected to the oil return port of the wringing and draining hydraulic motor (6-2-7), the oil return port of the belt winding hydraulic motor (6-3-2), the oil return port of the hydraulic speed regulating valve (6-2-6), and the overflow port of the electromagnetic proportional flow valve (6-3-1) through oil pipes; the oil outlet of the oil return circuit assembly (6-2-8) is connected to the oil inlet of the oil tank (6-2-4) through an oil pipe.

2. The multi-drive potato digging and drip irrigation tape recycling combined operation machine according to claim 1, characterized in that: The material of the transverse guide roller (2-2-5) and the vertical guide roller (2-2-6) is nylon; the material of the wringer wheel (2-2-3) is polyurethane; and the angle between the inclined mounting plate (2-2-7) and the horizontal plane is 30°.

3. The multi-drive potato digging and drip irrigation tape recycling combined operation machine according to claim 1, characterized in that: A short shaft sleeve (4-2-2) is provided on the fixed tape shaft (4-2-1) between the tape drive sprocket (4-2-4) and the active tape bearing (4-1) with a diamond seat, so that the tape drive sprocket (4-2-4) is close to the flange (4-2-5); and a long shaft sleeve (4-2-3) is provided on the fixed tape shaft (4-2-1) between the tape roller on the other side and the active tape bearing (4-1) with a diamond seat.

4. The multi-drive potato digging and drip irrigation tape recycling combined operation machine according to claim 1, characterized in that: The lifting arm (4-3) comprises a lifting arm body (4-3-1), a bearing chamber mounting plate (4-3-2), a deep groove ball bearing (4-3-4), a rotating shaft (4-3-5), a connecting rod fixing plate (4-3-6), a main connecting rod (4-3-7) and a hinge bolt (4-3-9); L-shaped notches are opened on both sides of the top of the lifting arm body (4-3-1) and fixedly connected to the bearing chamber mounting plate (4-3-2), thereby forming a bearing chamber (4-3-3); the rotating shaft ( 4-3-5) is installed in the bearing chamber (4-3-3) through a deep groove ball bearing (4-3-4); the connecting rod fixing plate (4-3-6) is fixedly connected to the outside of the lifting arm body (4-3-1); the lower end of the main connecting rod (4-3-7) is fixedly connected to the connecting rod fixing plate (4-3-6), and the upper end is provided with a hinge bolt (4-3-9) for hinged connection with the telescopic rod end of the hydraulic cylinder (4-6); the main connecting rod (4-3-7) is provided with a reinforcing plate (4-3-8).

5. The multi-drive potato digging and drip irrigation tape recycling combined operation machine according to claim 1, characterized in that: A primary support wheel (5-1-3) and a primary support pipe (5-1-6) fixedly connected to the left and right side plates (1-9) are provided below the upper chain of the primary conveying chain (5-1-1); a secondary support pipe (5-2-8) is provided below the upper chain of the secondary conveying chain (5-2-1), and a secondary support wheel (5-2-9) is installed on the secondary support pipe (5-2-8) via a support wheel bracket (5-2-10); and an "eight"-shaped flow guide guard plate (5-2-6) and a potato collecting plate (5-2-7) fixedly connected to the left and right side plates (1-9) are provided at the rear of the secondary shaking conveying device (5-2).

6. The multi-drive potato digging and drip irrigation tape recycling combined operation machine according to claim 5, characterized in that: The primary shaking conveying device (5-1) is divided into two left-right symmetrical shaking conveying units by an intermediate support plate (5-1-7); the intermediate support plate (5-1-7) is fixedly connected to the front end and the excavating device (7), and the middle part is fixedly connected to the primary support pipe (5-1-6); a third secondary chain belt (5-2-1-3) is provided in the middle part of the secondary conveying chain (5-2-1), and the third secondary chain belt (5-2-1-3) is fixedly connected to the secondary rod (5-2-1-1) by an intermediate clip (5-2-1-2).

7. The multi-drive potato digging and drip irrigation tape recycling combined operation machine according to claim 1, characterized in that: An adjustable support mechanism (5-2-4) is provided at the lower rear part of the upper chain of the secondary conveying chain (5-2-1) for adjusting the inclination and rising angle of the secondary conveying chain (5-2-1); the adjustable support mechanism (5-2-4) comprises a crank (5-2-4-1), a connecting rod (5-2-4-2), an adjustable support wheel (5-2-4-3), a support wheel fixing plate (5-2-4-4) and a support rod (5-2-4-5); a plurality of support wheel fixing plates (5-2-4-4) are fixedly connected to the support rod (5-2-4-5) at equal intervals, and an adjustable support wheel fixing plate (5-2-4-4) for supporting the secondary conveying chain (5-2-1) is installed on the support wheel fixing plate (5-2-4-4). The support wheel (5-2-4-3) is adjusted; the left and right ends of the support rod (5-2-4-5) are fixedly connected to a crank (5-2-4-1); the crank (5-2-4-1) is hinged to the connecting rod (5-2-4-2) fixed to the left and right side plates (1-9) in an adjustable hinge position through a hinge bolt; different hinge positions enable the support rod (5-2-4-5) to have different horizontal heights, thereby realizing the adjustment of the inclination and rising angle of the secondary conveying chain (5-2-1), and at the same time, the vibration amplitude of the secondary conveying chain (5-2-1) under the action of the strong shaking mechanism can be changed accordingly; the inclination and rising angle range of the secondary conveying chain (5-2-1) is 10° to 20°.

8. The multi-drive potato digging and drip irrigation tape recycling combined operation machine according to claim 7, characterized in that: The inclined rising angle of the primary conveying chain (5-1-1) is 21°; the inclined rising angle of the secondary conveying chain (5-2-1) is 14°.

9. The multi-drive potato digging and drip irrigation tape recycling combined operation machine according to claim 1, characterized in that: The excavating device (7) comprises a short shovel (7-1), a long shovel (7-2), and a shovel seat (7-3), wherein the long shovel (7-2) and the short shovel (7-1) are provided with countersunk slots, the shovel tips are provided with blade angles, and the shovel seat (7-3) is fixedly connected to the shovel by countersunk bolts and is welded to the frame (1); The walking depth limiting device (3) comprises a walking wheel (3-1), a limiting roller (3-2), a support arm connecting block (3-3), a side plate connecting block (3-4), a depth limiting connecting rod (3-5), a fixing plate (3-6), a sealing bearing seat (3-7) and a support arm (3-8); the limiting roller (3-2) is arranged on the wheel axle between the two walking wheels (3-1), and the two shaft ends of the wheel axle are each provided with a sealing bearing seat (3-7); the sealing bearing seat (3 -7) is fixedly connected to a support arm (3-8) at its front end, and the front end of the support arm (3-8) is hingedly connected to a support arm connecting block (3-3) fixedly connected to the side plate (1-9); the rear end of the sealing bearing seat (3-7) is fixedly connected to a fixing plate (3-6); the lower end of a vertically arranged depth limiting connecting rod (3-5) is fixedly connected to the fixing plate (3-6), and the upper end of the depth limiting connecting rod (3-5) is fixedly connected to a side plate connecting block (3-4) fixedly connected to the side plate (1-9) in an adjustable installation height.

10. The multi-drive potato digging and drip irrigation tape recycling combined operation machine according to claim 1, characterized in that: When the torque value detected by the torque sensor (6-3-3) exceeds the set limit, the output electrical signal is transmitted to the controller (6-3-6). The signal processing module in the controller (6-3-6) converts the electrical signal into a digital signal and transmits it to the single-chip microcomputer in the controller (6-3-6) for real-time processing. The single-chip microcomputer controls the proportional movement of the valve body inside the electromagnetic proportional flow valve (6-3-1) according to the preset value, thereby reducing the flow and pressure of the hydraulic oil, thereby controlling the speed of the winding hydraulic motor (6-3-2) to decrease; otherwise, the motor speed is increased to achieve electro-hydraulic control.

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