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CN-121970613-A - Transmission folding header of adaptive wide body harvester

CN121970613ACN 121970613 ACN121970613 ACN 121970613ACN-121970613-A

Abstract

The invention discloses a transmission folding header adapting to a wide-body harvester, which belongs to the technical field of agricultural machinery and comprises a header main body structure, a dedicated transmission system, a header pushing device front and rear hanging plate structure, a box cover plate fixing plate structure, a header folding hinge fixing frame structure, a folding header hydraulic control valve group structure and folding hinge shafts, wherein the header main body is formed by arranging a middle fixing section and folding sections on two sides, the dedicated transmission system adopts structures such as an interpolation universal fork shaft, a compression universal joint and the like to optimize transmission gaps, the front and rear hanging plates of the pushing device leave a conveying space on the upper part of a packing auger, the box cover plate fixing plate is interfered by a hinge shaft displacement avoiding structure, the folding hinge fixing frame realizes folding force uniform distribution and auxiliary function expansion, and the hydraulic control valve group is integrated in a modularized mode and optimizes oil path layout. The invention solves the problems of small transmission gap, blocked crop conveying, more structural interference, unstable folding, poor hydraulic control reliability and the like of the header of the wide-body harvester, realizes the interference-free transmission, efficient conveying, stable folding and safe control of the 9-ridge header, and has strong practicability and popularization, and the matched structure can be adapted to a multi-model multi-ridge header.

Inventors

  • ZHANG XIANG

Assignees

  • 张祥

Dates

Publication Date
20260505
Application Date
20260324

Claims (10)

  1. 1. A transmission folding header suitable for a wide body harvester comprises a header main body structure (5), a special transmission system, a front lifting plate structure (1) and a rear lifting plate structure (2) of a header pushing and transporting device, a box cover plate fixing plate structure (2), a header folding hinge fixing frame structure (3), a folding header hydraulic control valve group structure and a folding hinge shaft (6), and is characterized in that the header main body structure (5) is a split type layout of a middle ridge fixing section and folding sections on two sides, the folding sections on two sides are in transmission connection with the middle fixing section through folding hinges, the folding hinge shaft (6) is arranged at a hinge connection position to realize folding limit, the special transmission system comprises an interpolation universal fork shaft (9), a compression universal joint (11), a steel plate bending and welding split/integrated tubular bearing seat, an inner and outer sleeve type telescopic shaft (10), a header transmission shaft (7) +coupler device (8) and a host fixing output shaft (12), the bearing seat is arranged on two sides of the middle ridge fixing section, the interpolation universal fork shaft (9) and the compression universal joint (11) are arranged in the bearing seat, the header transmission shaft (7) +the middle sleeve device (8) is connected with the middle lifting and the middle lifting shaft (12) through the middle lifting and transporting device on the two ends of the front lifting and the middle lifting frame structure, and the front lifting frame structure is in a six-shaped expansion joint structure is connected with the middle lifting frame structure through a front lifting and the middle lifting frame (1), the height of the upper edge of the hanging plate is close to the height of the auger pusher blade, the box cover plate fixing plate structure (2) is of an integrated structure formed by bending a double hinge shaft and an integral plate, the front hinge shaft is in a shifting design and is fixedly connected with the upper cover plate and the plastic plate through screws, the double hinge shaft is fixedly connected with the fixing plate and the header box, the header folding hinge fixing plate structure (3) is of an integrated structure of a front fixing beam, a rear fixing beam and a middle oil cylinder (4) hanging frame, the front fixing beam and the rear fixing beam are in seamless full welding with the header folding hinge, the oil cylinder (4) hanging frame is welded in the middle of the front fixing beam, the hydraulic oil cylinder (4) is fixed on a main frame of the oil cylinder (4) through a pin shaft, a main car hydraulic oil port is reserved for a valve body, the main car hydraulic oil port is in butt joint with an electric appliance signal interface, the folding header hydraulic control valve block structure is of a modularized integrated type, a main electromagnetic valve block is integrated with a one-way valve (15), a main electromagnetic valve block, a small electromagnetic valve (16), a synchronous valve and a safety valve (13) and a symmetrical oil port (14), an internal oil way is in a straight-down layout, and an external oil pipe is in butt joint at a small angle.
  2. 2. The transmission folding header of the adaptive wide body harvester according to claim 1, wherein the inner and outer sleeve type telescopic shafts (10) of the dedicated transmission system can be freely inserted/extracted, the adaptive header can level the telescopic requirement of swinging, and the transmission gap is not additionally occupied.
  3. 3. The transmission folding header of the adaptive wide body harvester according to claim 1, wherein the front and rear lifting plate structures (1) of the header pusher are characterized in that the rear ends of the lifting plates are connected with lifting plate seats welded at the middle sections of the rear vertical beams, the front ends of the lifting plates are connected with the pusher shaft, the upper edges of the lifting plates are aligned with the outer round edges of the pushing blades, the structure completely gives up the upper conveying space of the pushing auger, the upper conveying space is not blocked, and especially, the harvesting and lodging corn stalks can fall on the pushing auger, and a smooth crop conveying channel without blocking can be formed.
  4. 4. The transmission folding header of the adaptive wide body harvester according to claim 1, wherein the box cover plate fixing plate structure (2) is formed by integrally bending a single steel plate, split assembly is not needed, and only a small amount of adaptation treatment is carried out on the position of a rear hinge shaft during refitting, and a front shaft position plastic plate of an upper cover plate is not needed to be cut.
  5. 5. The transmission folding header of the adaptive wide body harvester according to claim 1, wherein a lifting frame of an oil cylinder (4) of the header folding hinge fixing frame structure (3) enables driving force of the hydraulic oil cylinder (4) to be used for fixing a beam stress center.
  6. 6. The transmission folding header of the adaptive wide body harvester according to claim 1, wherein an adjustable one-way valve (15) of the hydraulic control valve group structure of the folding header precisely controls one-way oil inlet and return flow, a synchronous valve adjusts the oil inlet and return flow of oil cylinders (4) on two sides in real time to ensure synchronous action, a safety valve (13) realizes pressure locking after the header of the hydraulic system is folded/unfolded in place, and a main electromagnetic valve group and a small electromagnetic valve group are respectively adaptive to large-flow and small-flow oil way demands through a main car signal and a header folding position limit switch signal (16).
  7. 7. The transmission folding header of the adaptive wide body harvester according to claim 1, wherein the header transmission shaft (7) +the coupler device (8) can realize flexible combination and separation of the middle fixed section and the shaft heads of the folding sections on two sides, the middle distance between the bearing seats on two sides of the 5 ridges of the middle section of the 9 ridges of the header and the shaft heads of the main machine fixed output shaft (12) of the harvester is shorter, and the transmission folding function of the 9 ridges of folding header is realized through the outward movement of the header transmission shaft (7) in the middle of research and development compression and the bearing seats.
  8. 8. The transmission folding header of the adaptive wide body harvester according to claim 1, wherein the limit signal switch interface of the header folding hinge fixing frame structure (3) can receive a main vehicle electrical appliance signal.
  9. 9. The transmission folding header of the adaptive wide body harvester according to claim 1, wherein the symmetrical oil port connector (14) of the hydraulic control valve group structure of the folding header is in small-angle bending and accurate butt joint with the symmetrical oil port pipeline of the bidirectional oil cylinder (4).
  10. 10. The transmission folding header for adapting to the wide body harvester according to any one of claims 1 to 9, wherein the front and rear hanging plate structures (1), the box cover plate fixing plate structure (2), the header folding hinge fixing frame structure (3) and the folding header hydraulic control valve group structure can be directly adapted to the folding header for the wide body harvester with different types and different ridge numbers.

Description

Transmission folding header of adaptive wide body harvester Technical Field The invention belongs to the technical field of agricultural machinery, and particularly relates to a transmission folding header suitable for a wide-body harvester, and optimization structures such as front and rear hanging plates, a box cover plate fixing plate, a header folding hinge fixing frame, a folding header hydraulic control valve group and the like designed for the transmission folding header. Background The existing folding header matched with the wide body harvester has a plurality of technical defects in practical application, and cannot meet the requirements of efficient and stable harvesting operation, and the specific problems are as follows: 9. the ridge cutting table adopts a layout of a middle fixed section and folding sections at two sides, the connecting space between the middle section and a host machine is extremely narrow, the transmission shaft of a conventional externally-inserted universal shaft is long in length and large in space occupation, and is easy to be connected with the cutting table and the host machine in a hanging manner, normal transmission and folding cannot be realized, and the ridge cutting table becomes a core bottleneck for developing the 9-ridge folding cutting table; the traditional header auger adopts an upper hanging plate and a lower hanging plate to fix an auger for pushing, the upper end of the auger is fixed on a front upper beam of a folding hinge, the upper conveying space of the auger is occupied, straw blockage is easy to occur, and especially when lodging corn is harvested, the straw is blocked after falling down on the surface of the auger, so that the conveying efficiency is seriously affected; The hinge shaft position of the conventional box cover plate fixing plate is unreasonable in design, is easy to collide with an upper cover plate and a plastic plate, the cover plate is required to be cut during refitting or installation, deformation and cracking are easy to occur after welding repair, and the fault maintenance rate is high; The traditional header folding hinge fixing frame is of a simple integrated structure, no special stress beam is designed, the installation position of the oil cylinder hanging frame is random, the hydraulic driving force is concentrated on a local welding point when the header is folded, deformation of the fixing frame and cracking of the welding point are easy to occur, folding actions are easy to be blocked, two sides are asynchronous, and auxiliary functions such as braking alignment, up-down swinging and the like cannot be realized by being matched with a main vehicle; The existing folding header is mostly spliced by adopting a conventional universal valve bank, the layout of an oil way is chaotic, an external oil pipe is bent at a large angle and easy to age and crack, hydraulic oil is leaked, a special flow and synchronous control assembly is not available, the action of a large oil cylinder is unstable, the synchronism of oil cylinders on two sides is poor, a single electromagnetic valve bank cannot adapt to the requirements of large/small flow oil cylinders, a special pressure maintaining safety valve is lacked, and after the header is folded, the pressure is easy to run off, the hydraulic oil is loose by oneself, so that potential safety hazards exist. Disclosure of Invention Aiming at the technical defects of the existing folding header of the wide body harvester, the invention provides a transmission folding header of an adaptive wide body harvester, which realizes the following aims by integrally designing a header main body structure and matched optimization structures such as an auger hanging plate, a box cover plate fixing plate, a folding hinge fixing frame, a hydraulic control valve group and the like: The problem that the transmission gap of the middle section of the multi-ridge cutting table is too small is solved, the transmission parts are installed, operated and folded without interference, and the development bottleneck of the multi-ridge folding cutting table is broken through; The crop conveying path is optimized, the upper space of the pushing auger is completely reserved, the unobstructed stable conveying of crops such as lodged corns is realized, and the harvesting efficiency is improved; the problem of structural interference is solved from the root, the working procedures of cutting and welding cover plates are omitted, and the equipment failure maintenance rate and the use cost are reduced; The folding stress structure of the header is optimized, stable and synchronous folding actions are realized, a hydraulic and electric system of a main vehicle is adapted, the functions of braking alignment and up-down swinging are expanded, and the operation accuracy is improved; the precise, stable and safe control of the hydraulic system of the cutting table is realized, the problems of cracking of an oil way, asynchronous