CN108684366A - Hand-held high-clearance cotton field topping machine - Google Patents

Abstract

The invention relates to a hand-held high-gap cotton field topping machine, which includes a frame, an adjustable high-gap chassis, a rope-type topping device, a hydraulic system and a transmission system; the invention adopts a rope-type topping method and uses a nylon rope instead The traditional blade prevents the blade from being thrown out and hurts people, reducing potential safety hazards; the light nylon rope material reduces power consumption during topping; at the same time, the nylon rope has strong toughness, good corrosion resistance and wear resistance, and is convenient for daily maintenance and maintenance. The invention can adjust the wheel base and the height of the chassis according to the different row spacing and cotton plant height of cotton planting, can satisfy different cotton planting row spacing and cotton plant height, and improves the passability of the machine in the field.

Description

Walk-behind high clearance cotton field topping machine

technical field

The invention relates to a hand-held high-gap cotton field topping machine, in particular to a rope-type topping device and an adjustable high-gap chassis for cotton topping operations, belonging to cotton field management machinery.

Background technique

Cotton is an important economic crop in my country, with a large planting area and a wide range. It is mainly divided into the cotton area in the middle and lower reaches of the Yangtze River, the cotton area in the middle and lower reaches of the Yellow River, and Xinjiang cotton area. In the cotton production process, the topping operation is very important. Through the topping operation, the cotton top core can be removed, the top advantage can be eliminated, the growth of cotton bolls can be promoted, the quality of cotton can be improved, and the purpose of increasing production and income can be achieved. For a long time, the topping operation of cotton in my country has mainly been done manually. The time is tight, the task is heavy, the cost is high, and the labor intensity is high, which reduces the production enthusiasm of cotton farmers.

At present, some universities and research institutes in the cotton area of Xinjiang have developed a suspended cotton field topping machine, which needs to be mounted on a traditional high-horsepower tractor. It has a small ground clearance and a large tire width, so it has poor passability in the cotton field. . Due to the different cotton planting patterns in the eastern and western cotton regions of my country, this kind of topping machine in Xinjiang cotton region is not suitable for the eastern region. In recent years, the eastern region has also developed a topping machine suitable for the eastern cotton region, which is suitable for large-scale cotton planting in the plains, but it cannot be used normally in the eastern hilly areas. Therefore, it is of great significance to design a cotton field topping machine suitable for the eastern hilly area to improve the mechanization level of cotton production in my country and promote the development of agricultural economy.

Contents of the invention

The technical problem to be solved by this invention is to provide a hand-held high-gap cotton field topping machine. Due to the difference in cotton varieties and growth, the height of the cotton plants during the topping period is different. The topping machine can be used according to different cotton plant heights and planting The line spacing is adjusted to improve the passability of the topping machine in the cotton field. In the present invention, the topping device adopts hydraulic drive, and the cutter in the topping device is designed as a rope-type cutter. Compared with the existing blade-type cutter, it has small driving force, high safety, strong stability, Easy to maintain and repair. The whole machine is small in size, flexible and convenient, and is suitable for use in small cotton fields in eastern hilly areas.

A hand-held high clearance cotton field topping machine, including a frame, an adjustable high clearance chassis, a rope topping device, a hydraulic system and a transmission system;

The adjustable high ground clearance chassis includes a front wheel track adjusting device, a driving wheel track adjusting device, and a chassis height adjusting device.

The front of the frame is equipped with two front wheels symmetrically through the front wheel mounting frame; the front wheel mounting frame is provided with a height adjustment mechanism; the front wheel height adjustment mechanism includes a leading screw and a handle; The wheel mounting frame is composed of two steel pipes of different lengths that can be nested inside and outside. The top of the short thin steel pipe inside is provided with threads; The handles are connected, and the bottom of the lead screw is connected with the thread; when the handle is turned, the lead screw rotates, driving the thinner steel pipe to move up and down. The bottom of the thin steel pipe is connected to the front wheel; by turning the handle, the forward and reverse rotation of the lead screw can be adjusted to adjust the ground clearance of the front part of the high ground clearance; it cooperates with the chassis height adjustment device to complete the adjustment of the chassis height of the whole machine.

The front wheel track adjustment device includes a fixed shaft and a front wheel support shaft; two ends of the fixed shaft are respectively connected to two front wheel support shafts; the fixed shaft is two hexagonal shafts nested and installed, and the two hexagonal shafts can Slide to adjust the depth of embedding to adjust the distance between the two front wheel support shafts, thereby adjusting the distance between the two front wheels; the front wheel support shafts are installed on the front wheel mounting frame.

The driving wheel track adjusting device is symmetrically arranged on the left and right sides of the frame behind the front wheels; the driving wheel track adjusting device includes a driving wheel mounting frame, a driving wheel mounting seat, a transmission shaft and double cross universal joints; The driving wheel mounting frame is installed on the frame; the bottom of the driving wheel mounting frame is movable with a driving wheel mounting seat; at the same time, the two ends of the transmission shaft are respectively nested and connected with the driving wheel mounting seats on both sides; the driving wheel mounting seat is used for It is used to install the driving wheel; the inner side of each driving wheel is connected with double cross universal joints; two double cross universal joints are installed on the drive shaft; the drive shaft is two hexagonal shafts nested and installed, and the embedded depth can be adjusted by relative sliding , to adjust the distance between the two double cross universal joints; by adjusting the distance between the two double cross universal joints, adjust the wheelbase between the driving wheels; according to the cotton planting row spacing, the wheelbase of the driving wheels is between 1~ Adjustable within 1.6m.

The chassis height adjustment device includes a height adjustment seat and a lead screw; the height adjustment seat is installed on the driving wheel mounting frame; the height adjustment seat and the driving wheel mounting seat are vertically symmetrically installed on the driving wheel mounting frame; The wheel mounting seat moves simultaneously on the driving wheel mounting frame; the left and right positions of the height adjustment seat and the driving wheel mounting seat on the driving wheel mounting frame are adjustable; each driving wheel is connected with a chain transmission mechanism; the chain transmission mechanism includes a chain Wheel mounting plate, sprocket I, sprocket II and chain; the chain transmission mechanism is fixed on the driving wheel mounting seat through the sprocket mounting plate; the sprocket I is installed on the driving wheel shaft; the two ends of the transmission shaft are respectively connected to the chain Wheel II; sprocket I and sprocket II are connected by a chain; there is a sprocket mounting plate on each of the two sides, the upper end of the sprocket mounting plate is connected to the driving wheel mounting seat, the lower end of the sprocket mounting plate is connected to the driving wheel shaft, and the two sprockets The mounting plate is connected with a fixed bent plate; the height adjustment seat is provided with a lead screw 2; the bottom end of the lead screw 2 is hinged with the fixed bent plate; Adjust the positive and negative rotation of the lead screw 2, the length of the lead screw 2 is extended or shortened, and it is used to control the rotation of the chain transmission mechanism around the drive wheel mounting seat to change the ground clearance at the rear of the chassis, and the clearance adjustment range is 0.6 ~ 1m; The four-link mounting frame is symmetrically arranged on the left and right sides of the rear of the frame; the two four-link mounting frames are symmetrically provided with adjustment holes; the rectangular mounting frame is movably installed on the four-link mounting frame through a parallel four-bar linkage mechanism ; The parallel four-bar linkage mechanism can adjust the height of the rope-type topping device from the ground by coordinating and connecting with different adjustment holes.

The rope-type topping device includes a parallel four-bar linkage mechanism, a rectangular mounting frame, a hydraulic lifting cylinder, a topping device mounting frame, a topping mechanism mounting seat, a hydraulic motor, a belt, a pulley, a shaft, a tensioning device, and a nylon rope. , a nylon rope fixing plate and a protective cover; the parallel four-bar linkage mechanism is composed of four equal-length connecting rods, and the four connecting rods are symmetrically installed on the four-link mounting brackets on both sides respectively, and each four-link is installed Two connecting rods are installed on the frame; one end of the connecting rod is installed in the adjustment hole in the corresponding position; The two ends of the oil cylinder are respectively connected to the upper cross bar of the rectangular mounting frame and the front end of the adjustable chassis through pin shafts; as the hydraulic lifting cylinder is extended or shortened, the parallel four-bar linkage mechanism is driven to rotate up and down, thereby driving the rectangular mounting frame to adjust up and down; The topping device mounting frame is fixed on the lower cross bar of the rectangular mounting frame; the topping mechanism mounting seat is fixed on the topping device mounting frame; the topping mechanism mounting seat is used to install the bearing seat; the shaft is installed in the bearing seat, and the shaft The upper end is equipped with a small pulley, and the lower end is installed with a nylon rope fixed disk; the nylon rope fixed disk is evenly distributed with nylon ropes along its axial direction, which is used to cut the top core of cotton plants; the number of small pulleys, nylon rope fixed disks and shafts depends on the number of topping The number of rows is determined; the hydraulic motor is installed on the topping device installation frame through the hydraulic motor mounting seat; the large pulley is installed on the output shaft of the hydraulic motor; the large pulley and the small pulley and between the small pulleys are connected by a belt; each topping There is a tensioning device on one side of the mechanism mounting seat, and the tensioning device is used to tension the belt; a protective cover is installed on the upper part of the belt, the large pulley and the small pulley to prevent the belt from wrapping around the stems and leaves of the cotton plant when the belt rotates, and at the same time prevent the belt from flying out Hurt.

The hydraulic system includes an engine (gasoline engine can be used), a hydraulic pump, a manual reversing valve, a hydraulic oil pipe and a hydraulic oil tank; the engine drives the hydraulic pump to work through a belt drive; The high-pressure oil outlet is connected to the oil inlet of the manual reversing valve through the hydraulic oil pipe; the oil outlet of the manual reversing valve is respectively connected to the oil inlet of the hydraulic lifting cylinder and the hydraulic motor through the hydraulic oil pipe; the manual reversing valve is connected by changing the hydraulic oil The flow direction of the hydraulic oil pump and the hydraulic motor are controlled; the oil outlets of the hydraulic lifting cylinder and the hydraulic motor are respectively connected with the hydraulic oil tank.

The transmission system includes a gearbox, an engine pulley and a belt; the gearbox and the engine are connected through a belt drive; the engine output shaft and the gearbox input shaft are connected through the engine pulley and a belt; after the gearbox changes speed and torque, the power is transmitted through the internal gear transmission To the output shaft of the gearbox, the output shaft of the gearbox is connected to the transmission shaft, and then the driving wheel is driven to rotate through the chain transmission mechanism, and the forward and backward of the whole machine is controlled.

Existing topping machines are all blade-type topping, which has great potential safety hazards; in order to prevent the blade from being thrown out and hurting people, the present invention uses a section of nylon rope instead of the blade. When the shaft rotates, the nylon rope is thrown out to cut the top core; During the cotton topping period, the top core is a tender bud, and the rotation speed of the nylon rope fixed disc can be increased to smoothly cut the top core.

Before entering the field work, adjust the wheel base and chassis height according to the row spacing of cotton planting and the height of cotton plants. The present invention designs a chassis wheel base adjustment device and a chassis height adjustment device. The adjustment method is manual adjustment; it can meet different requirements. The row spacing of cotton planting and the height of cotton plants can improve the passability of the machine in the field.

Advantages of the invention

(1) The present invention adopts the rope-type topping method, and uses nylon rope instead of the traditional blade to prevent the blade from being thrown out and hurt people, which reduces potential safety hazards; the material of the nylon rope is light and light, which reduces the power consumption during topping; at the same time, the nylon rope Strong toughness, good corrosion resistance and wear resistance, convenient for daily maintenance and repair.

(2) Handrails are installed in front of the adjustable high-ground clearance chassis, which can be used for hand-held work; at the same time, the wheel base and chassis height of the high-ground clearance chassis can be adjusted. The wheelbase can be adjusted according to the row spacing of cotton to improve the passability of the topping machine in the cotton field; the height of the chassis can be adjusted according to the height of different cotton plants to prevent damage to the cotton plants by the machine.

(3) The present invention is small in size and light in weight (the track of the driving wheel is only 1-1.6m, and the height of the chassis is only 0.6-1m). It reduces the compaction of the land and is convenient and flexible.

(4) The present invention can adjust the height of the rope type topping device according to actual needs, and is suitable for cotton plants of different heights.

Description of drawings

Figure 1 is a schematic diagram of a walk-behind high-gap cotton field topping machine;

Fig. 2 is a schematic diagram of a rope type topping device;

Fig. 3 is the chassis schematic diagram I of the hand-held high clearance cotton field topping machine;

Fig. 4 is a schematic diagram II of the chassis of a hand-held high-gap cotton field topping machine;

Fig. 5 is a schematic diagram of the transmission system of the walk-behind high-gap cotton field topping machine;

In the figure: 1. Engine, 2. Hydraulic pump, 3. Manual reversing valve, 4. Hydraulic oil pipe, 5. Drive wheel track adjustment mechanism, 6. Drive wheel height adjustment mechanism, 7. Drive wheel, 8. Front wheel , 9. Front wheel height adjustment mechanism, 10. Parallel four-bar linkage mechanism, 11. Rope topping device, 12. Rectangular mounting frame, 13. Hydraulic lifting cylinder, 14. Front wheel track adjustment mechanism, 15. Hydraulic pressure Fuel tank, 16. Gearbox, 17. Handrail assembly, 18. Mounting frame for topping device, 19. Nylon rope, 20. Nylon rope fixed disk, 21. Hydraulic motor, 22. Bearing seat, 23. Topping mechanism mounting seat , 24. Small pulley, 25. Belt, 26. Shaft, 27. Large pulley, 28. Hydraulic motor mount, 29. Front wheel height adjustment mechanism, 30. Front wheel support shaft, 31. Drive wheel mounting frame, 32. Lead screw, 33. Driving wheel height adjustment seat, 34. Driving wheel mounting seat, 35. Chain transmission mechanism, 36. Driving wheel shaft, 37. Double cross universal joint, 38. Transmission shaft, 39. Front wheel shaft, 40. Front Wheel mounting frame, 41. Front wheel track adjustment mechanism, 42. Four-link mounting frame, 43. Fixed bent plate, 44. Gearbox pulley, 45. Gearbox input shaft, 46. Gearbox belt, 47. Engine output Shaft, 48. engine pulley, 49. hydraulic pump belt, 50. hydraulic pump pulley, 51. hydraulic pump input shaft, 52. sprocket I, 53. transmission chain, 54. sprocket II, 55. transmission output shaft.

specific implementation

Before entering the cotton field operation, adjust the wheelbase of the topping machine according to the row spacing of cotton planting. The wheelbase adjustment range is 1-1.6m. The fixing bolts of the seat 34 are loosened, so that the driving wheel height adjustment seat 33 and the driving wheel mounting seat 34 can be slid left and right on the driving wheel mounting frame 31 for adjustment, and then the fixed pin on the driving wheel transmission shaft 38 is opened, and the driving wheel transmission The shaft 38 and the mounting shaft of the double cross universal joint 37 are nested and connected, and the depth of embedding can be adjusted. One end of the mounting shaft is provided with a plurality of through holes to match the through holes of the drive shaft 38, and the two are fixed with a fixed pin. connect. According to the row spacing of cotton planting, the drive wheels 7 on both sides are adjusted inwardly or outwardly by the wheel base adjusting device, and after the adjustment is completed, the bolts and fixing pins are fastened to complete the 7 wheel base adjustments of the drive wheels. Loosen the fixing bolts at the front wheel track adjustment mechanism 41 places, the front wheel support shaft 30 is a hexagonal shaft, and is nestedly connected with the fixed shaft at the wheel track adjustment mechanism 41 places, and the depth of embedding can be adjusted and fixed by bolts. According to the wheelbase requirements, the two front wheels 8 are adjusted inwardly or outwardly, and the bolts are tightened after the adjustment is completed, and the wheelbase adjustment between the front wheels 8 is completed.

Different varieties of cotton plants have different heights during the topping period. According to the height of cotton plants, the height of the chassis is adjusted to improve the passability of the machine in the cotton field. The chassis height adjustment device includes a drive wheel height adjustment seat 33 and a lead screw 32; the drive wheel height adjustment seat 33 is installed on the drive wheel mounting frame 31; the drive wheel height adjustment seat 33 and the drive wheel mounting seat 34 are installed symmetrically up and down On the drive wheel mount 31; the drive wheel height adjustment seat 33 and the drive wheel mount 34 move simultaneously on the drive wheel mount 31; the drive wheel height adjustment seat 33 and the drive wheel mount 34 on the drive wheel mount 31 The left and right positions can be adjusted simultaneously; each driving wheel 7 is connected with a chain drive mechanism 35; the chain drive mechanism 35 includes a sprocket mounting plate, sprocket wheel I52, sprocket wheel II54 and chain 53; The mounting plate is fixed on the drive wheel mount 34; the sprocket wheel I52 is mounted on the drive wheel shaft; the sprocket wheel II54 is mounted on the drive shaft 38; the sprocket wheel I52 and the sprocket wheel II54 are connected by a chain 53; the drive wheel 7 There is a sprocket mounting plate on both sides, the upper end of the sprocket mounting plate is connected to the driving wheel mounting seat 34, the lower end of the sprocket mounting plate is connected to the driving wheel shaft, and the fixed curved plate 43 is connected between the two sprocket mounting plates; the fixed curved plate 43 Fixed on the sprocket mounting plate; the driving wheel height adjustment seat 33 is provided with a lead screw 2 32; the bottom of the lead screw 32 is hinged with the fixed curved plate 43; The inclination angle of the transmission mechanism 35; adjust the forward and reverse rotation of the lead screw 2 32, the length of the lead screw 2 32 is extended or shortened, and is used to control the rotation of the chain drive mechanism 35 around the mounting seat of the drive wheel 7 to change the ground clearance at the rear of the chassis , the clearance adjustment range is 0.6 ~ 1m; by adjusting the handle on the front wheel 8 front wheel height adjustment mechanism 29, the ground clearance of the front part of the high ground clearance can be adjusted, so that the front and rear ground clearances of the chassis are the same, and the height of the chassis of the whole machine is completed. adjust.

The rope type topping device is fixed on the rectangular mounting frame 12 at the front of the topping machine through a U-shaped draw-in slot and bolts. During work, gasoline engine 1 output shaft 47 drives gearbox 16 work by belt 46, engine pulley 48, gearbox pulley 44, through gearbox 16 variable speed increases torsion power is output by gearbox output shaft 45, drives transmission shaft 38 to rotate, Transmission shaft two ends drive sprocket wheel II54 respectively, through chain 53, sprocket wheel I52 power is transmitted to drive wheel 7, the advance of control drive wheel and retreat. Simultaneously, the gasoline engine 1 output shaft 47 drives the hydraulic pump 2 to work through the belt 49, the engine pulley 48, and the hydraulic pump pulley 50. The hydraulic pump 2 absorbs hydraulic oil from the hydraulic oil tank 15. The reversing valve 3, the reversing valve 3 sends the hydraulic oil to the hydraulic lifting cylinder 13 or the hydraulic motor 21 through the hydraulic oil pipe 4, and controls the expansion and contraction of the hydraulic lifting cylinder 13 or the rotation of the hydraulic motor 21. The hydraulic lifting cylinder 13 is extended or shortened, driving the square tube of the parallel four-bar linkage mechanism to change the angle of inclination, controlling the upward or downward movement of the rectangular mounting frame 12, and adjusting the height of the rope type topping device 11 from the ground to meet the needs of different heights. The topping of the plant; the hydraulic motor 21 rotates to drive the large pulley 27 to rotate, and the belt 25 drives the small pulley 26 to rotate. The small pulley 24 is installed with the shaft 26 of the rope type topping device, and the shaft 26 of the rope type topping device is connected with the nylon The rope fixing plate 20 is bolted, and the nylon rope 19 is fixed on the nylon rope fixing plate 20, (the nylon fixing plate 20 can be provided with three sections or four sections of nylon rope 19 along its axial direction as the topping blade), and the small pulley 26 drives Axle 26 rotates, and then drives nylon rope 19 to rotate around axle 26, and nylon rope 19 cuts the top core of cotton plant, carries out topping operation.

Tensioning device among the present invention can adopt existing tensioning technology to realize: in the present embodiment, tensioning device is the nut that is welded on the topping device mounting frame and the bolt that cooperates with nut; Nut is fixed on the topping device mounting frame , screw in the bolt, and the thin end of the bolt bears against the mounting seat of the topping mechanism. After installing the belt, screw this bolt again to hold the mounting seat of the topping mechanism against it. A tensioning device is installed on one side of each topping mechanism mounting seat to tension the belt and prevent the belt from being too loose and detached from the pulley.

According to the different heights of different varieties of cotton during topping, the rope topping device can be adjusted up and down, and the four-link mounting frame 42 is fixed by bolt connection. The connecting position of the link mechanism realizes the up and down adjustment of the rope topping device.

In this embodiment, three rows of cotton topping operations are taken as an example, and three nylon rope fixing plates are set, but the number of simultaneous topping operations in the present invention is not limited to three rows, and the number of nylon ropes can be increased or decreased according to the actual number of topping rows. The number of rope fixed discs.

Claims (10)

1. a kind of hand-held high-clearance cotton field topping machine, including rack and transmission system;It is characterized in that:Further include:It is adjustable High-clearance chassis, rope type topping device and hydraulic system;

The adjustable high-clearance chassis includes front tread regulating device, driving tread regulating device, chassis height tune Regulating device;

It is symmetrically installed by front-wheel mounting bracket that there are two front-wheels in front of the rack;Front-wheel mounting bracket front-wheel mounting bracket is equipped with height Spend regulating mechanism;The front-wheel height adjustment mechanism includes leading screw one and handle;The front-wheel mounting bracket is two different lengths The movable inside and outside nested composition of steel pipe, be equipped with screw thread at the top of internal short fine steel tube;The setting of the leading screw one is nested in front-wheel Inside the long thick steel pipe of mounting bracket;The top of leading screw one is connected with handle, leading screw bottom be threadedly coupled;Rotational handle, leading screw rotation, Drive is moved up and down compared with fine steel tube;Fine steel tube bottom connects front-wheel;By rotational handle, height is adjusted in adjusting screw positive and negative rotation The road clearance of ground gap front;Coordinate with the chassis height adjusting devices, completes the adjusting of complete machine chassis height;

The front tread regulating device includes fixing axle and front wheel supporting axis;Fixed both ends of the shaft is separately connected two front wheel supportings Axis;The fixing axle is two hexagonal axis of nested installation, and two hexagonal axis opposite can slide the embedded depth of adjustment, with adjustment Spacing between two front wheel supporting axis, so as to adjust the spacing of two front-wheels;The front wheel supporting axis is installed mounted on front-wheel On frame;

The driving tread regulating device is symmetrically arranged at left and right sides of the rack at front-wheel rear;The driving tread is adjusted Device includes driving wheel mounting bracket, driving wheel mounting base, transmission shaft and diesis universal joint;Driving wheel mounting bracket is mounted on rack On;Driving wheel mounting bracket bottom is movable to be equipped with driving wheel mounting base;Simultaneously the transmission shaft both ends respectively with the drive of both sides Driving wheel mounting base nested encryptions;Driving wheel mounting base is for installing driving wheel;Diesis universal joint is connected on the inside of each driving wheel; Two diesis universal joints are mounted on transmission shaft;The transmission shaft is two hexagonal axis of nested installation, being capable of opposite sliding Insert depth is adjusted, to adjust the spacing between two diesis universal joints;By between two diesis universal joints of adjusting Spacing adjusts the wheelspan between driving wheel;

The chassis height adjusting devices include height adjustment seat and leading screw;The height adjustment seat is mounted on driving wheel mounting bracket On;Height adjustment seat is symmetrical above and below on driving wheel mounting bracket with driving wheel mounting base;Height adjustment seat is pacified with driving wheel It is mobile simultaneously on driving wheel mounting bracket to fill seat;The left and right position of height adjustment seat and driving wheel mounting base on driving wheel mounting bracket It sets adjustable;There are one chain-drive mechanisms for each driving wheel connection;The chain-drive mechanism includes sprocket wheel mounting plate, sprocket wheel I, sprocket wheel II and chain;Chain-drive mechanism is fixed on by sprocket wheel mounting plate in driving wheel mounting base;The sprocket wheel I is mounted on drive shaft On;The both ends of the drive shaft is separately connected sprocket wheel II;Sprocket wheel I is connected with sprocket wheel II by chain;Respectively there are one chains for the both sides Mounting plate is taken turns, sprocket wheel mounting plate upper end connects driving wheel mounting base, and sprocket wheel mounting plate lower end connects drive shaft, two sprocket wheel peaces Bent plate is connected and fixed between loading board;Height adjustment seat is equipped with leading screw two;Two bottom end of leading screw is hinged with mounting angle plate;Leading screw two is just Turn or invert, two length elongation of leading screw or shortening can adjust the angle of inclination of driving wheel chain-drive mechanism, to change chassis rear portion Road clearance;

The rope type topping device includes parallel four-bar linkage, rectangle carry frame, hydraulic lifting oil cylinder, topping device installation Frame, topping mechanism mounting base, hydraulic motor, belt, belt pulley, axis, tensioning apparatus, nylon rope, nylon rope fix disk and protection Cover;The parallel four-bar linkage is made of four isometric connecting rods, and four connecting rods are respectively symmetrically mounted on the double leval jib of both sides On mounting bracket, two connecting rods are installed on each double leval jib mounting bracket;The double leval jib mounting bracket is symmetrically arranged at a left side for frame aft Right both sides;It is arranged with adjustment hole on two double leval jib mounting brackets;Rectangle carry frame is pacified by parallel four-bar linkage activity On double leval jib mounting bracket;Connecting rod one end is mounted in the adjustment hole of corresponding position;The other end connects rectangle carry frame;Institute State cross tube and adjustable chassis front end that hydraulic lifting oil cylinder both ends connect rectangle carry frame by axis pin respectively;Hydraulic pressure liter Drop oil cylinder, which elongates or shortens, drives parallel four-bar linkage to rotate upwardly and downwardly, to drive rectangle carry frame to adjust up and down;Topping Device mounting bracket is fixed on rectangle carry frame sheer pole;Topping mechanism mounting base is fixed on topping device mounting bracket;It beats Top mechanism mounting base is for installing bearing block;Axis is mounted in bearing block, and small belt pulley is installed in the upper end of axis, and nylon is installed in lower end The fixed disk of rope;Hydraulic motor is mounted on by hydraulic motor mounting base on topping device mounting bracket;On the output shaft of hydraulic motor Big belt pulley is installed;It is connected between big belt pulley and small belt pulley and by belt between small belt pulley;The belt and great Pi Protective cover is installed on belt wheel and small belt pulley top;

The hydraulic system includes engine, hydraulic pump, hand-operated direction valve, hydraulic oil pipe and hydraulic oil container;Engine passes through band Transmission belt hydrodynamic pressure pump work;Hydraulic pump low pressure oil inlet is connected with hydraulic tank by hydraulic oil pipe, and high-pressure oil outlet passes through Hydraulic oil pipe is connect with hand-operated direction valve oil inlet;The oil outlet of hand-operated direction valve is oily with hydraulic lifting respectively by hydraulic oil pipe Cylinder is connected with the oil inlet of hydraulic motor;Hand-operated direction valve controls hydraulic oil pump and hydraulic pressure horse by the flow direction of change hydraulic oil The work reached;The oil outlet of hydraulic lifting oil cylinder and hydraulic motor is connected with hydraulic tank respectively.

2. a kind of small-sized self-walking high-clearance sprayer as described in claim 1, it is characterised in that:According to cotton planting row Away from the wheelspan of driving wheel is adjustable in 1~1.6m.

3. a kind of small-sized self-walking high-clearance sprayer as described in claim 1, it is characterised in that:The chassis rear portion from Ground gap adjustment range is 0.6~1m.

4. a kind of small-sized self-walking high-clearance sprayer as described in claim 1, it is characterised in that:The parallel―ordinal shift machine Structure adjusts height of the rope type topping device apart from ground by being connected with different adjustment hole.

5. a kind of small-sized self-walking high-clearance sprayer as described in claim 1, it is characterised in that:The connecting rod and adjustment hole And the connection of rectangle carry frame is axis pin connection.

6. a kind of small-sized self-walking high-clearance sprayer as described in claim 1, it is characterised in that:The nylon rope fixes disk It is evenly equipped with nylon rope along its axial direction, for cutting cotton plant plunger tip.

7. a kind of small-sized self-walking high-clearance sprayer as claimed in claim 6, it is characterised in that:The nylon rope fixes disk It is equipped with three sections or four sections of nylon ropes.

8. a kind of small-sized self-walking high-clearance sprayer as described in claim 1, it is characterised in that:The small belt pulley, Buddhist nun The number of the fixed disk of dragon rope and axis is arranged according to the line number of cotton topping.

9. a kind of small-sized self-walking high-clearance sprayer as described in claim 1, it is characterised in that:The installation of each topping mechanism Seat side is set there are one tensioning apparatus, and tensioning apparatus is used for tightening belt.

10. a kind of small-sized self-walking high-clearance sprayer as described in claim 1, it is characterised in that:The transmission system packet Include gearbox, belt pulley and belt;Gearbox is connect with engine by V belt translation;Engine output shaft and transmission input shaft It is connected by belt pulley, belt;Output shaft of gear-box is transferred power to through internal gear transmission after gearbox variable-speed torque-converting, is become Fast case output shaft and transmission axis connection, then drive traveling wheel rotation, control topping machine walking through chain drive.