45 results about "Disc harrow" patented technology

The invention relates to the field of operation machinery, and discloses a disc harrow adjusting system, an adjusting method and operation machinery. The disc harrow adjusting system comprises a harrow frame base body, a movable harrow and a deflection angle adjusting module. The deflection angle adjusting module is used for driving the movable harrow to deflect and adjust relative to the harrow frame base body; the control module comprises a data processing module, a data input module and a controller, a parameter optimization platform model and a simulation real-time response model after big data training are built in the data processing module, and the data input module is configured to import operation parameters into the simulation real-time response model to obtain all working condition data meeting requirements; the parameter optimization platform model is used for selecting an optimal working deflection angle from all the working condition data, and the controller is configured to control the deflection angle adjusting module to work according to the optimal working deflection angle. The disc harrow adjusting system disclosed by the invention can guarantee the farming quality and improve the working efficiency.

The invention belongs to the technical field of soda saline-alkali soil improvement, and particularly relates to a method for desalting a dry farmland plough layer of soda saline-alkali soil. The method comprises the following steps that (1) a soil subsoiler provided with a vibration subsoiling shovel is used for conducting vibration type subsoiling on the soda saline-alkali soil, and the soil loosening depth ranges from 40 cm to 60 cm; the modifier comprises the following components: aluminum sulfate, decomposed cow dung, a mixture of fermented gills and fish viscera, zeolite, carbonized rice husks, potassium fulvate, sulfur powder and compound bacteria, (2) in spring of the current year, a modifier is uniformly scattered on the soil surface of the soda saline-alkali land after deep scarification; after the modifier is spread, the modifier is mixed into the soil surface layer within the depth range of 0-20 cm by adopting a staggered rotary tillage method, soil blocks are harrowed and crushed by using a disc harrow after rotary tillage, and the land is leveled. The method provided by the invention can effectively reduce salt and alkaline components in the soil and improve the content of organic matters in the soil.

A recycling device with magnetic agricultural residual film adsorption capacity comprises a traditional mechanical mulching film recycling machine and a magnetic residual film adsorption recycling device, and the traditional mechanical mulching film recycling machine comprises a rack, a film lifting shovel, a soil penetration depth adjusting device, a front land supporting wheel, a rear land supporting wheel, a transmission gearbox, a transmission device, a conveying belt, a material collecting and scraping device and a material collecting box; the magnetic recovery device comprises a set of adjustable disc harrow pieces, a driving roller, a connecting piece, a transmission belt, a front transmission drum, a rear transmission drum, a conveying belt, a magnetic strip, an adjustable pinch roller, a residual film collecting and scraping device and a residual film collecting box. Magnetic residual films which cannot be completely recycled by a traditional mechanical mulching film recycling machine can be recycled; a magnetic strip is arranged on the conveying belt, so that most earth surface residual plastic film residues can be recycled conveniently; and the residual film is recovered by the magnetic residual film adsorption and recovery device and is stored by the residual film collection box. The device has the advantages of being convenient to operate, high in recovery efficiency of residual magnetic plastic film residues in the field, capable of solving plastic film residue pollution to the maximum degree and the like.

The present invention relates to an intelligent soil-turning device for cultivating saline-alkali land applied in the field of agricultural machinery technology, comprising a device body, a turning bracket, a turning plow bucket, an outlet, a disc harrow wheel, a compacting wheel, an outer wheel ring and a connecting membrane ring. The present invention performs deep plowing on the saline-alkali land through the turning plow bucket, and the chemical improver in the turning plow bucket leaks out through the outlet, and the chemical improver is laid in the deep grooves plowed by deep plowing. The laid chemical improver is then rolled by the outer wheel ring on the compacting wheel, effectively increasing the laying width and area of ​​the chemical improver. Subsequently, the disc harrow wheel crushes the soil blocks plowed by deep plowing and buries the chemical improver, effectively reducing the impact of planting activities on the soil surface on the chemical improver, effectively reducing the loss of the chemical improver, and the chemical improver that neutralizes the alkalinity of the soil effectively inhibits the sodium ions in the deep soil layer from rising to the soil surface, thereby effectively improving the planting soil layer of the saline-alkali land.

The present invention discloses a self-cleaning disc harrow in the field of disc harrow technology, comprising a main beam, a secondary beam fixedly connected to the left side of the main beam, a plurality of equally spaced connecting rods fixedly connected to the lower side of the main beam, a disc harrow blade rotatably connected to one side of the bottom end of the connecting rod through a rotating connection mechanism, the concave surface of the disc harrow blade is a cone-shaped structure, and the concave surface of the disc harrow blade faces away from the connecting rod; when a certain amount of mud is entangled on the fixed scraper bar, the first movable scraper bar and the second movable scraper bar, the trigger component can automatically trigger the cutting transmission component to operate, and the cutting transmission component can use the rotating disc harrow blade as power to cause the first movable scraper bar and the second movable scraper bar to slide back and forth in opposite directions along the fixed scraper bar, so that the first cutting teeth and the second cutting teeth cut off the entangled weeds, and then the weeds and the soil associated with the weeds can be easily dropped from the fixed scraper bar, the first movable scraper bar and the second movable scraper bar.

The utility model belongs to the technical field of agricultural planting, and particularly relates to a uniform soil turning device for agricultural planting, which comprises a disc harrow body, extending support plates are welded on two side parts of the disc harrow body, electric hydraulic push rods are fixedly mounted on the top end side parts of the extending support plates in a penetrating manner, and universal wheels are fixedly mounted at the output ends of the electric hydraulic push rods. A supporting square pipe is welded to the middle of one end of the disc harrow body, a fixing frame is welded to one end of the supporting square pipe, a supporting plate is movably installed at the top in the fixing frame, a movable sleeve is welded to the bottom of the supporting plate, a rotating rod is movably installed in the movable sleeve, and supporting wheels are installed on the two sides of the rotating rod. By lifting the disc harrow body, the disc harrow body can be conveniently pulled to move on a road, the road and the disc harrow body cannot be damaged, when the disc harrow body is used, by rotating the supporting wheels to the position above the disc harrow body, the configuration of the disc harrow body can be increased, and use of the disc harrow body is facilitated.

The present invention discloses a disc harrow shaft seat, belonging to the technical field of disc harrows. It includes a cast iron shaft seat, a radial load guiding unit, a composite load unit, a limiting platform, an end core shaft guiding member and an intermediate core shaft. A flange seat is integrally formed at the top of the cast iron shaft seat; flange rings are integrally formed at both ends of the cast iron shaft seat; a plurality of positioning blocks are integrally formed in the middle of the inner side of the cast iron shaft seat, and a plurality of limiting blocks are integrally formed on both sides of the positioning blocks of the cast iron shaft seat; screw holes are provided at the ends of the positioning blocks and the limiting blocks; the radial load guiding unit is clamped and fixed at the positioning blocks; the composite load unit abuts between the positioning blocks and the limiting blocks. The disc harrow shaft seat of the present invention can be directly installed in the middle of the disc harrow main shaft to support and guide the disc harrow main shaft. The radial load guiding unit always centers the middle of the intermediate core shaft and directly bears the axial impact force of the intermediate core shaft through the roller array, enabling the intermediate core shaft to rotate smoothly.

1. The name of the design product: harrow blade. 2. The use of the design product: the design product is used for the parts of the agricultural machinery disc harrow. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The utility model relates to the technical field of agricultural machinery, and discloses an agricultural machinery disc harrow which comprises a fixing support, a first harrow frame and a second harrow frame are installed at the bottom of the fixing support, a notch harrow set is rotatably installed at the bottom of the first harrow frame, and a disc harrow set is rotatably installed at the bottom of the second harrow frame. Mud scraping mechanisms which are distributed at equal intervals are fixedly mounted at the tops of the first harrow frame and the second harrow frame, and each mud scraping mechanism comprises a fixing plate and a mounting plate. Through the arrangement of the mud scraping mechanism, the mud scraping mechanism is composed of the fixing plate, the mounting plate, the mud scraping plate and the tooth set cutter, when the notch harrow set and the disc harrow set work, the mud scraping plate can scrape mud attached to the notch harrow set and the disc harrow set, and the cleaning effect on the notch harrow set and the disc harrow set is achieved; and the tooth group cutters can scatter the soil, so that the resistance during soil cleaning is small, and the soil adhered to the notch harrow group and the disc harrow group can be smoothly cleaned.

The invention relates to the technical field of agricultural machinery, in particular to a backpack type hydraulic folding soil preparation machine. Comprising a folding support and fixing supports rotationally arranged on the folding support, the fixing supports are symmetrically arranged, a harrow group mechanism is arranged at the bottom of the folding support, a crushing device is rotationally arranged at the rear end of the harrow group mechanism and the folding support, and an adjusting mechanism used for controlling the angle of the harrow group mechanism is arranged on the fixing supports. The ends, located on the two sides of the harrow group mechanism, of the folding support are provided with isolation mechanisms in a sliding mode, and the isolation mechanisms separate the adjacent soil low-lying positions. The distance between the isolation plate and the land is controlled by adjusting the angle of the first connecting plate and the second connecting plate, and the shielding position of the isolation plate on the soil turned by the fluted disc harrow and the disc harrow is changed, so that the phenomenon that the isolation plate cannot shield the turned soil in place when the fluted disc harrow and the disc harrow turn over the soil at too high speed can be avoided; therefore, the soil is prevented from gathering towards low-lying places, and smooth drainage is guaranteed.

The utility model discloses a seedbed leveling mechanism which comprises a soft elastic soil preparation plate, the soft elastic soil preparation plate is arranged between two furrow openers, and a plurality of rotary blades are further arranged on the inner side of the soft elastic soil preparation plate. The disc harrow is used for cutting soil, the rotary blade is used for rotary tillage operation to smash and scatter the soil, the furrow openers on the two sides of the seedbed are used for opening ditches on the two sides of the seedbed along the soil cutting track of the disc harrow while rotary tillage is conducted, the harrow grabs conduct one-time carding operation on the soil obtained after rotary tillage, and large protruding soil blocks, rice stubbles and the like are carded and pressed down. In the process that the soft elastic soil preparation plate scrapes scattered soil to be flat, and the soft elastic soil preparation plate flattens the soil, due to the soft and elastic characteristics of the soft elastic soil preparation plate, hard extrusion of the soft elastic soil preparation plate on the soil can be avoided, soil compression and caking are avoided, then the water permeability and the air permeability of the soil are guaranteed, and good conditions are provided for growth and development of seeds.

The invention discloses a disc harrow facilitating soil crushing. The disc harrow comprises a traction frame, a first disc harrow assembly, a second disc harrow assembly and a floating mechanism. A liftable roller is arranged on the traction frame; the first disc harrow assembly and the second disc harrow assembly are arranged on the traction frame in a front-back distribution mode in the advancing direction. The floating mechanisms are arranged between the first disc harrow assembly and the traction frame and between the second disc harrow assembly and the traction frame; the floating mechanism comprises a fixing seat, a floating connecting rod and an elastic pressure assembly, the fixing seat is installed on the traction frame, one end of the floating connecting rod is hinged to the fixing seat around the horizontal axis, the other end of the floating connecting rod is connected to the first disc harrow assembly / the second disc harrow assembly, and the elastic pressure assembly is used for applying downward pressure to the floating connecting rod. When encountering underground stones, the harrow blades can float upwards to cross hard obstacles, and deformation or breakage of the harrow blades caused by rigid collision is avoided. And the condition that the traction force exceeds the rated traction capacity of the traction device due to overlarge traction force can be avoided.

The invention relates to the technical field of agricultural machinery part machining, in particular to an agricultural machinery part multi-station self-adaptive machining tool system and a flexible machining method. The system comprises a rotary table, a bearing mechanism and a clamping mechanism, the bearing mechanism and the clamping mechanism are annularly arranged, the rotary table is provided with four stations of feeding and discharging, positioning and clamping, center hole machining and edge machining, and an auxiliary positioning mechanism and a top pressing mechanism are arranged. The clamping mechanism comprises three clamping jaws which synchronously displace, and V-shaped chucks are arranged at the jaw ends; the bearing mechanism comprises a bearing seat capable of being replaced quickly, and the top arc-shaped face of the bearing seat is matched with the bottom radian of the disc harrow blade. The auxiliary positioning mechanism is rectified and leveled through a pressing plate, and the top pressing mechanism is provided with four sets of constant-force pressing devices. Rapid model changing is achieved through magnetic attraction matching of the bearing seat and the mounting base, the clamping jaw is adaptive to the harrow blades with different outer diameters, and the constant-force pressing device ensures that machining is free of deviation. According to the system, the multi-variety production switching efficiency is improved, the machining coaxiality and precision are guaranteed, the rejection rate is reduced, and the system is suitable for efficient and flexible machining of disc harrow blades.

The utility model provides a strip tillage machine. Comprising a straw pulverizer rack, a main gear box, a transmission shaft, a lower suspension bracket, an upper suspension bracket, a side box transmission shaft, a strip tillage depth adjusting hydraulic cylinder, a strip tillage depth sensor, a press roller bracket, a press roller driving hydraulic motor, a press roller, a strip tillage rack, a strip tillage machine driving hydraulic motor, a strip tillage machine knife roller, a front disc harrow, a side box bearing seat and a side box, a straw crusher flail knife roller, a grass dividing baffle, a straw crusher flail knife roller height sensor, a straw crusher flail knife roller height adjusting hydraulic cylinder, a strip tillage rack adjusting connecting rod, a disc harrow seat, a rear disc harrow, a subsoiler, a fertilizer box, a disc harrow fertilization pipe, a subsoiler fertilization pipe, a bent flail knife, a straight flail knife, a strip tillage 7-shaped knife and a straw crusher fixed knife. Straw is crushed at the front part, then deep scarification is carried out, a shallow soil layer is broken through a disc harrow, and meanwhile, base fertilizer deep application and full plough layer mixed fertilization are carried out, so that the emergence rate is guaranteed.

The invention relates to an intelligent soil turning device for saline-alkali soil cultivation applied to the technical field of agricultural machinery, and the intelligent soil turning device comprises a device vehicle body, a turning support, a plow bucket, a leakage opening, a disc harrow wheel, a compaction wheel, an outer wheel ring and a connecting film ring. The saline-alkali soil is deeply ploughed through the plow bucket, and a chemical modifier in the plow bucket leaks out through the leakage opening; a chemical modifier is laid in a deeply ploughed deep groove, then the laid chemical modifier is rolled through an outer wheel ring on a compaction wheel, the laying width area of the chemical modifier is effectively increased, and then a disc harrow wheel crushes deeply ploughed soil blocks and embeds the chemical modifier. The influence of planting activities on the soil surface layer on the chemical modifier is effectively reduced, the loss of the chemical modifier is effectively reduced, the chemical modifier for neutralizing the soil alkalinity effectively inhibits sodium ions in the deep soil layer from upwelling to the soil surface layer, and then the planting soil layer of the saline-alkali soil is effectively improved.

The present invention relates to a wheeled trailing disc harrow, provided with a central platform equipped with gauge wheels, which is trailed by a tractor and which receives an overlaid chassis provided with steered wheels at its ends (front and rear), further receiving angle return arms having a hub and plate on which the concave discs are mounted. The hydraulic systems that equip this soil harrow make it possible to rotate the overlaid chassis, as well as the angle return arms and, consequently, the concave discs which, with this system, are reversible, that is, they operate in both directions, thereby allowing changes in the angle of attack according to the soil to be prepared for crop cultivation, operating efficiently at depths of up to 500 mm.

A residual film detection and recovery device based on superposition of an electric field and a magnetic field belongs to the field of intelligent agricultural equipment, a detection mechanism of the residual film detection and recovery device integrates an electric field detection part and a magnetic field detection part, an electric field is established through an electric field disc harrow emitting electrode, and preliminary positioning is performed by utilizing field intensity distortion caused by dielectric constant difference between residual films and soil; an alternating magnetic field is excited through the electromagnetic coil in the magnetic field disc harrow, secondary verification is carried out on magnetic field change caused by the blocking effect of the residual film on induced eddy current in soil, and the accuracy and the anti-jamming capability of residual film identification can be remarkably improved through an electric field and magnetic field superposed dual-mode detection mechanism. After detection, the soil loosening mechanism loosens the soil containing the residual films, then the picking and conveying mechanism with bionic spike teeth picks out the residual films and conveys the residual films to the film collecting box, and precise recovery is completed. According to the invention, integrated combined operation of residual film detection, positioning and recovery can be realized, and the problems of blind operation and incomplete recovery of a traditional recovery machine are effectively solved.

The utility model discloses a folding type combined land preparation machine, which relates to the technical field of combined land preparation machines and comprises a main beam, two sides of the main beam are rotatably connected with land preparation devices, each land preparation device comprises a connecting frame, and a cutting component and a soil loosening component are respectively mounted in each connecting frame from front to back. The cutting assembly comprises a plurality of cutting blades with the height capable of being adjusted up and down, and the disc harrow blade is installed on the connecting frame in a sliding mode through a plurality of elastic telescopic rods. According to the folding type combined land preparation machine, by arranging the cutting assembly, the cutting assembly cuts off crop stalks and weeds above the ground in advance, the workload of a rear disc harrow blade is relieved, and the disc harrow only needs to loosen soil and cut the cut stalks, weeds and underground roots. By arranging the soil loosening assembly, disc harrow blades of the soil loosening assembly are installed through the elastic telescopic rods, when the soil loosening assembly meets shallow stones, the telescopic rods contract to reduce friction between the harrow blades and the stones, abrasion is reduced, and the service life is prolonged.

The utility model relates to a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough device, and the utility model discloses a paddy field pool stem edge collecting disc plough, and the utility model discloses a paddy field pool stem edge collecting disc plough, the utility model discloses a paddy field pool stem edge collecting disc plough, and the paddy field pool stem edge collecting disc plough is used to the construction field of paddy field stem building and edge collecting.

The invention discloses a self-adaptive visbreaking desorption type composite disc harrow blade, and belongs to the technical field of agricultural machinery. The disc harrow blade comprises a disc harrow blade body, wherein a plurality of mounting grooves are uniformly formed in at least one disc surface of the disc harrow blade body at intervals in the circumferential direction; the plurality of groups of elastic supporting pieces correspond to the plurality of mounting grooves, and one end of each group of elastic supporting pieces is fixed at the bottom of the mounting groove close to one side of the center of the disc harrow blade body; the shape of the elastic piece is matched with that of the mounting groove, one end of the elastic piece is hinged to the inner side wall, away from the center of the disc harrow blade body, of the mounting groove, and the other end of the elastic piece is pressed at the other end of the corresponding elastic supporting piece. The elastic pieces can overcome the pre-tightening force of the elastic supporting pieces to slide inwards into the mounting grooves when subjected to soil extrusion force in the tillage burying stage, load is borne by the elastic pieces and the disc together, the elastic pieces can pop out by means of the restoring force of the springs in the unearthing stage, and attached soil can rapidly fall off by means of the low surfaces of the elastic pieces; therefore, continuous and efficient self-adaptive visbreaking and automatic desorption functions are realized.

The invention provides a high-performance and high-yield disc harrow blade manufacturing method based on novel boron steel. The disk blade structure is optimized, a forged round boss structure is adopted to replace a traditional connecting square hole, stress concentration is eliminated through an arc structure, the strength is improved, and the fatigue life is prolonged. The round boss is changed, forging and pressing procedures are reduced, the boss is directly formed during forging and pressing forming, and the production efficiency and the yield are improved. Component optimization design is carried out on the harrow blade material, and die forging pressure forming and composite heat treatment are synchronously carried out by adopting an integrated forming and critical cycle quenching process (machining-integrated forming-critical cycle quenching-tempering-shot blasting-plastic spraying-curing); stress concentration caused by micro-cracks and excessive punching during cold machining of the blank is avoided, the yield is increased, and the harrow blade has good strength, toughness and high wear resistance. The method is high in feasibility, easy to popularize, low in cost and expected to be widely applied to the field of agricultural machinery manufacturing.

The utility model provides a profiling foldable type strip tillage machine with multiple strips. Comprising a foldable main machine frame, a strip tillage machine unit, a fertilizer box, a main beam I, a lower suspension frame, an upper suspension frame, a hydraulic cylinder base, a main beam II, a small folding shaft, a ridge distance adjusting hydraulic cylinder, a four-connecting-rod profiling mechanism, a folding hydraulic cylinder, a folding hydraulic cylinder supporting plate, a strip tillage machine unit machine frame, an adjustable depth limiting land wheel, a subsoiling shovel fertilization pipe, a subsoiling shovel, a disc harrow and a four-connecting-rod profiling mechanism chaining base. The subsoiler comprises a subsoiler base, a disc harrow base, a U-shaped clip, a pressing roller bracket, a pressing roller driving hydraulic motor, a pressing roller, a strip tillage knife roller driving hydraulic motor, a strip tillage knife roller and a disc harrow fertilization pipe.

To improve adaptability to different fields. [Solution] A disc harrow type tilling implement 3 is connected to the rear of a tractor 1 via a lifting link mechanism 2 and tills the soil in accordance with the movement of the tractor 1. The implement comprises an implement frame 4 connected to the rear of the tractor 1, a front row of discs 5 arranged at predetermined intervals in the left-right direction below the front of the implement frame 4, a rear row of discs 6 arranged at predetermined intervals in the left-right direction below the rear of the implement frame 4, a roller 7 positioned behind the rear row of discs 6 so as to be vertically adjustable, and a weight 9 placed on the implement frame 4. Each of the multiple soil-crushing discs 16 constituting the front row of discs 5 and the rear row of discs 6 is rotatable about a disc support shaft 21 as its center of rotation, and the weight 9 is located above the disc support shaft 21 in a side view.

The utility model relates to the technical field of disc harrows, and discloses a hilly land profiling disc harrow mechanism which comprises a fixing frame, a plurality of disc pieces are arranged on an outer ring of a rotating shaft in a penetrating mode, a fixing shaft is fixedly connected between the front side and the rear side of the fixing frame, and rotating cylinders are rotationally connected to the front side and the rear side of an outer ring of the fixing shaft in a penetrating mode. Rotating blocks are fixedly connected to the tops of the rotating cylinders, a top plate is fixedly connected to the tops of the rotating blocks, a limiting block is fixedly connected to the top of the top plate, a rotating disc penetrates through the middle of the inner wall of the limiting block and is rotationally connected with the middle of the inner wall of the limiting block, a connecting shaft is fixedly connected to the top of the rotating disc, and traction frames penetrate through the left side and the right side of the outer ring of a rotating rod and are rotationally connected with the left side and the right side of the rotating rod. According to the utility model, when the disc sheet is in contact with the mountain stone, the disc harrow mechanism can be lifted left and right through the matching of the rotating drum and the rotating block, and the disc harrow mechanism can have a turning function through the rotation of the rotating disc and the connecting shaft in the limiting block, so that the maneuverability and the operation flexibility are improved.

The invention discloses a tapered roller bearing assembly for a disc harrow hub. The tapered roller bearing assembly comprises a main shaft, the cover body is arranged at the front end of the main shaft in a sleeving manner and is provided with a cylindrical base body and a convex disc part which is arranged at the front end of the base body and protrudes outwards in the radial direction; the main shaft is coaxially sleeved with the outer shell, and a step face extending inwards in the radial direction is arranged in an inner hole in the front end of the outer shell; an annular accommodating cavity is formed between the convex disc part of the cover body and the step surface of the outer shell, the accommodating cavity is communicated with a bearing mounting area between the main shaft and the outer shell, and a tapered roller bearing is mounted in the bearing mounting area; the sealing mechanism is arranged in the accommodating cavity; the lubricating channel penetrates into the main shaft in the axial direction and is communicated with the lubricating area of the bearing mounting area through a radial branch hole which penetrates through the main shaft in the radial direction, it is guaranteed that the harrow blade still keeps rotating accurately under the high-impact and high-overturning working conditions of the rugged earth surface, and the service life of the bearing and the service life of the whole machine are remarkably prolonged.

To improve the work efficiency of tillage depth adjustment work. [Solution] A disc harrow type tilling implement 3 that tills the soil in accordance with the movement of a tractor 1, comprising: a front disc row 5 and a rear disc row 6 that crush soil in accordance with the movement of the tractor 1; a roller 7 positioned behind the rear disc row 6 that rolls on the soil surface to regulate the tilling depth of the front disc row 5 and the rear disc row 6; a hydraulic cylinder 32 that raises and lowers the roller 7 between a lower limit position that regulates the tilling depth and a storage position that is retracted upward from the lower limit position; a mechanical stopper 55 that mechanically regulates the lower limit position of the roller 7; and a lower limit position adjustment unit 56 that can move and fix the position of the mechanical stopper 55 in accordance with manual operation, thereby changing the tilling depth of the front disc row 5 and the rear disc row 6 based on the position movement of the mechanical stopper 55.

The utility model discloses a disc harrow blade angle adjusting device, and belongs to the field of agricultural machinery, the angle adjusting device comprises a harrow group cross beam, a plurality of harrow legs are equidistantly arranged on the harrow group cross beam along the length direction of the harrow group cross beam, disc harrow blades are fixedly arranged at the lower ends of the harrow legs, and an angle adjusting mechanism is arranged on the harrow group cross beam; the angle adjusting mechanism comprises a first rack arranged at the upper end of the harrow group cross beam, a driven gear fixedly arranged at the top of the harrow leg in a sleeving mode and connected with the first rack in an engaged mode, and a driving piece used for driving the first rack to move in the length direction of the harrow group cross beam. Through the linkage design of the gear and the rack, synchronous angle adjustment of the multiple disc harrow blades is achieved, the tedious operation of adjustment one by one in the prior art is avoided, and the adjustment efficiency is remarkably improved; a mechanical transmission structure can ensure the precision and stability of angle adjustment, and the angle adjustment requirements of different farming scenes are met.

The application relates to a disc harrow blade and a preparation method thereof, and belongs to the technical field of high-strength steel for agricultural machinery; the microstructure of the edge part of the disc harrow blade is based on martensite, and the microstructure of the core part of the disc harrow blade is based on ferrite and pearlite; the distribution of the microstructure ensures the high wear resistance of the edge part of the disc harrow blade during work, and ensures the high toughness of the core part of the disc harrow blade, so that brittle fracture or cracking phenomenon is avoided during service.

The invention relates to the technical field of soybean cultivation, in particular to a high-yield and high-efficiency soybean cultivation method which comprises the following steps: step 1, variety selection: selecting soybean seeds with strong disease resistance, close planting resistance and high yield potential, and removing shriveled seeds, damaged seeds and impurities for fine selection; a previous non-leguminous crop plot is selected, deep ploughing is conducted after autumn harvesting, and a disc harrow is used for harrowing the plot for soil moisture preservation after soil is unfrozen in early spring; the spring soybeans are sown from mid-to-late April to early May, and the summer soybeans are sown from early June to mid-June. Sowing by using a sowing assembly; the fertilizer applying assembly applies fertilizer to the sides of the seeds. 4, field management, wherein first-time intertillage is conducted when the seedling height is 5 cm, and second-time intertillage is conducted when the seedling height is 15-20 cm. Soil water content in the seedling stage is maintained. Topdressing urea per mu at the initial stage of flowering; a monopotassium phosphate solution is sprayed in the early stage of seed filling of the weak-growing land parcels. Integrated operation of soybean sowing and fertilizing can be achieved, the utilization efficiency of agricultural machinery is improved, and the soybean yield is increased.

The utility model belongs to the technical field of landscaping, disclose a kind of land levelling equipment for landscaping construction, including traction frame, and the front end of traction frame is provided with traction part, and traction frame is sequentially provided with land levelling mechanism, soil breaking mechanism and leveling and compacting mechanism along the direction of travel, and land levelling mechanism includes at least one group of disc harrow group for carrying out preliminary cutting and overturning to soil, and soil breaking mechanism is located behind land levelling mechanism, and soil breaking mechanism includes at least one group of rake tooth component for carrying out secondary crushing to soil block after being processed by disc harrow group, and rake tooth component is made of multiple downward bending rigid ploughs, and leveling and compacting mechanism includes several compacting plates for rolling and flattening to loose soil, and multiple compacting plates are arranged along horizontal direction.The utility model can complete land levelling, soil breaking and leveling one time, and the disc harrow and plough of adjustable angle adapt to different soil conditions, greatly improve construction efficiency and soil uniformity.