The invention discloses a subsoiling and tilling knife tool The subsoiling and tilling knife tool comprises a knife carrier, a spiral sheet is fixed on the knife carrier, knife blades are mounted on the spiral sheet, a first soil piercing knife blade is fixed at the lower end of the spiral sheet, and a second soil piercing knife blade is fixed at the lower end of the knife carrier; and the lower ends of the first and second soil piercing knife blades are lower than the bottom face of the knife carrier, an inclination angle of the first soil piercing knife blade and an inclination angle of the second soil piercing knife blade each is slightly greater than a spiral angle of the spiral sheet, crushing and leveling knife blades are arranged at the upper end of the knife carrier in a staggered manner, and each crushing and leveling knife blade has an insertion part, a first bent part and a second bent part According to the subsoiling and tilling knife tool, due to the structure, the subsoiling and tilling knife tool can more easily pierce soil and is more uniformly stressed during soil piercing, so that leveling re-crushing for topsoil can be better carried out by using the knife tool

Subsoiling and tilling knife tool

The invention discloses a self-locking differential type caterpillar band steering drive system The self-locking differential type caterpillar band steering drive system comprises a rack, a power input shaft installed on the rack, and a spindle installed on the rack The two ends of the spindle are each provided with a planetary gear type output mechanism The power input shaft is connected with the spindle through a first transmission mechanism Each planetary gear type output mechanism comprises a sun wheel, an inner gear ring, a planetary rack and a planetary wheel, wherein an output shaft is connected to the planetary rack The caterpillar band steering drive system further comprises a self-locking steering drive device for driving the inner gear rings of the two planetary gear type output mechanisms to rotate synchronously and reversely The self-locking differential type caterpillar band steering drive system has the advantages of being simple in structure, easy to manufacture, stable and reliable in operation, good in steering performance, high in maneuverability and flexibility, and the like

Self-locking differential type caterpillar band steering drive system

A double-chain seedling-slinging conveying mechanism of a combined harvester for peanuts mainly comprises a seeding clamping conveyer chain, an upper transmission chain, a lower transmission chain and a spring hold-down strip, and is characterized in that a certain distance is reserved between the upper transmission chain and the lower transmission chain which are arranged up and down and side by side and clamped at the tail part of the seeding clamping conveyer chain of the combined harvester for peanuts, the seeding clamping conveyer chain, the upper transmission chain and the rear seeding clamping conveyer chain are all mounted on a movable frame of the combined harvester for the peanuts, the spring hold-down strips are mounted on the same side of the upper transmission chain and the lower transmission chain, the hold-down strips are fixed on the movable frame on the same side of the upper and the lower transmission chains, and the spring hold-down strips are clung to the same side surface of the upper and the lower transmission chains through elastic force.

Double-chain seedling-slinging conveying mechanism of combined harvester for peanut

The invention relates to a planetary steering mechanism of a caterpillar tractor, which is mainly constituted of an engine, a clutch, a gear box, a hydraulic pump, a right planetary mechanism, a half shaft driving wheel, a rear axle, a left planetary mechanism, a hydraulic motor and a central transmission device, wherein the steering mechanism is a dual-power steering mechanism, that is to say, the output power of the engine is separated into walking drive and steering control through the gear box; the walking drive and the steering control are parallelly transmitted and converged at the planetary mechanisms; after the output power of the engine goes through the clutch and the gear box, one of the output power of the engine goes through the gear box, the central transmission device, the planetary mechanism whose speed is reduced and the half shaft driving wheel; the other one of the output power of the engine goes through the gear box, the hydraulic pump, a control valve and the hydraulic motor; and the two branches of output power of the engine are converged on the planetary wheel. According to the invention, the caterpillar tractor has the advantages of continuously stable steering and small steering diameter; the effort is saved when steering; and the work efficiency and the work quality of the tractor are greatly improved.

Planetary steering mechanism of caterpillar tractor

The invention relates to a travelling transmission mechanism for a tracked vehicle The mechanism is applied to agricultural mechanisms for tilling, harvesting, planting, seeding and the like The mechanism comprises an engine (1), a clutch (3), a travelling turning control device (9) and a travelling driving wheel (10); a hydraulic pump, a hydraulic motor, a high-low pressure overflowing valve which forms a system are connected between the clutch (2) and the travelling turning control device (9) and mounted into a housing to form a closed-loop system; the hydraulic pump, the hydraulic motor and the high-low pressure overflowing valve are intercommunicated through integrated oil channels formed in the housing According to the mechanism, the flow rate and flowing direction of hydraulic oil can be changed to achieve stepless speed variation and forward moving and backward moving; the power transmission structure is simple; the repair is convenient; the weight of the whole device can be reduced; the operation performance and travelling passing performance of the agricultural mechanisms can be improved

Travelling transmission mechanism for tracked vehicle

The invention relates to a crop clamping height adjusting device of a header of a semi-feeding type harvester. The crop clamping height adjusting device comprises a rack, a lower-layer transmission conveying assembly, a middle-layer transmission conveying assembly and an upper-layer transmission conveying assembly, wherein the lower-layer transmission conveying assembly, the middle-layer transmission conveying assembly and the upper-layer transmission conveying assembly are arranged on the rack. The rack is installed between a crop collecting and conveying device of the header and a clamping chain mechanism which enables crops to be horizontally arranged and conveyed for threshing. The bottom of the rear end of the rack is provided with a cantilever rod which is fixed to the rack. The cantilever rod is movably arranged in a cantilever pipe of a harvester body to enable the whole rack to be capable of rotating around the cantilever pipe. The bottom of the front end of the rack is provided with an adjusting lever which can be used for vertically adjusting the inclination angle of the rack. According to the crop clamping height adjusting device, the rack is installed between the crop collecting and conveying device of the header of the semi-feeding type harvester and the clamping chain mechanism which enables the crops to be horizontally arranged and conveyed for threshing, the transmission structure is ingenious, a vertical-to-horizontal transition side baffle plate is omitted, the size of the transmission structure greatly shrinks, and the crop clamping height adjusting device is low in manufacturing cost, high in working reliability and applicable to miniaturization development.

Crop clamping height adjusting device of header of semi-feeding type harvester

The utility model relates to a cutting table crop clamping height regulating device of a semi-feeding type harvesting machine. The cutting table crop clamping height regulating device comprises a machine frame and three (lower, middle and upper) layers of transmission conveying assemblies, wherein the machine frame is arranged between a cutting table crop collecting and conveying device and a horizontal arranging conveying and threshing clamping chain mechanism, the bottom of the back end of the machine frame is provided with a cantilever rod fixed with the machine frame, and the cantilever rod is movably arranged in a cantilever pipe of a harvesting machine body, so the whole machine frame can rotate around the cantilever pipe, and a regulating rod capable of being used for upwards and downwards regulating the inclination angle of the machine frame is arranged at the bottom of the front end of the machine frame. The cutting table crop clamping height regulating device provided by the utility model is arranged between the cutting table crop collecting and conveying device of the semi-feeding type harvesting machine and the horizontal arranging conveying and threshing clamping chain mechanism, the transmission structure is ingenious, a vertical-to-horizontal turning side baffle plate is omitted, the size of the transmission structure is greatly reduced, the manufacturing cost is low, the work reliability is high, and the cutting table crop clamping height regulating device for the cutting table of the semi-feeding type harvesting machine is suitable for miniature development.

Cutting table crop clamping height regulating device of semi-feeding type harvesting machine

The utility model relates to a weed separator arranged between a threshing cylinder and a concave grate of a half-feed harvester, and the weed separator belongs to straw processing parts of the harvester. A cylinder half-round cover (2) is mounted above a threshing cylinder (1), the inner side of the cylinder half-round cover (2) is circumferentially separated by a plurality of deflectors to form a plurality of spiral diversion trenches (6), weed air flow passages are formed between the spiral diversion trenches (6) and threshing teeth (7) of the threshing cylinder; and the last circle of the spiral diversion trenches (6) is arranged above an end part of the threshing cylinder (1) and connected with a diversion trench (8). By utilizing the utility model, more than 60 percent of weeds can be thrown away under the action of the centrifugal force generated by the threshing cylinder in high-speed rotation and then discharged with the threshed straws; and the cleaning area of a vibration sieve is reduced, the weed expelling load of the vibration sieve is reduced, and the utility model conforms to the miniaturization development direction of the half-feed harvester.

Weed separator arranged between threshing cylinder and concave grate of half-feed harvester

The invention discloses a crawler belt tensioning mechanism of a crawler belt tractor. The mechanism includes a drive wheel and a driven wheel, the outer parts of the drive wheel and the driven wheelare sleeved with crawler belts, a plurality of thrust wheels are arranged between the drive wheel and the driven wheel, the two sides of the drive wheel and the two sides of the driven wheel are fixedly connected through two blocking plates, and the two ends of one side of each blocking plate are symmetrically provided with pairs of bolt holes. Through guide wheels arranged on a first rotating shaft in a sleeving mode, when the crawler belt needs to be tensioned, the height of a switch regulating electric hydraulic rod is controlled through an electric hydraulic rod arranged on the control panel, the tensioning degree of the crawler belt is thus adjusted, and it is convenient for people to operate the mechanism. The two guide wheels are arranged, when one of the two guide wheels is damaged, the other one of the two guide wheels can continuously tension the crawler belt, through the bolt holes formed in the different positions on the blocking plates, the height of a first fixing block can be adjusted, the regulation space of the electric hydraulic rod is thus increased, and the tensioning operation is easily conducted.

Crawler belt tensioning mechanism of crawler belt tractor

The utility model relates to a threshing and weeding transportation device of a half-feed harvester, which is suitable for a small rice and wheat harvester The threshing and weeding transportation device mainly comprises a spring pressure plate (1), pressure springs, a drive chain wheel (2) and a holding chain (3); the holding chain (3) is sleeved on the drive chain wheel (2) and one or more support wheels (4 and 5), and the entire line of the holding chain (3) spans a threshing zone (7) and a weeding zone (8) of the harvester; a tensioning part (6) is arranged at a non-tension section of the threshing zone (7); a first pressure spring (9) attached and pressed onto a holding chain roller is arranged at a leading end of the threshing zone (7); and the spring pressure plate (1) in contact with the holding chain roller is arranged in the whole threshing zone (7), while a second, a third and a fourth pressure springs (10, 11 and 12) attached and pressed onto the holding chain roller are arranged in the weeding zone (8) The threshing and weeding transportation device has the advantages of simple transmission structure, low manufacturing cost, and high work reliability

Threshing and weeding transportation device of half-feed harvester

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