Transmission folding header adaptive to wide-body harvester

Abstract

The invention discloses a transmission folding header adaptive to a wide-body harvester, which belongs to the technical field of agricultural machinery and comprises a header main body structure, an exclusive transmission system, header pusher front and rear hanger plate structures, a box body cover plate fixing plate structure, a header folding hinge fixing frame structure, a folding header hydraulic control valve group structure and a folding hinge shaft. A header main body is in a layout of a middle fixed section and folding sections on the two sides, an exclusive transmission system adopts structures such as an inner insertion type universal fork shaft and a compression type universal joint to optimize a transmission gap, a front hanger plate and a rear hanger plate of a pusher make up a conveying space on the upper portion of an auger, and a box body cover plate fixing plate moves through a hinge shaft to avoid structural interference. The folding hinge fixing frame realizes uniform distribution of folding force and expands an auxiliary function, and the hydraulic control valve group is modularly integrated and optimizes oil path layout. The problems that a wide-body harvester header is small in transmission gap, blocked in crop conveying, large in structural interference, unstable in folding, poor in hydraulic control reliability and the like are solved, interference-free transmission, efficient conveying, stable folding and safe control of a nine-ridge header are achieved, the matched structure can be matched with multi-model multi-ridge-number headers, and practicability and generalization performance are high.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, specifically relating to a transmission folding header adapted to a wide-body harvester, and optimized structures such as the front and rear hanging plates of the header pusher, the box cover fixing plate, the header folding hinge fixing frame, and the hydraulic control valve group of the folding header designed for it. It focuses on solving technical problems such as excessively small transmission clearance of the header in wide-body harvesters, obstructed crop conveying, high failure rate of structural interference, unstable folding action, and poor reliability of hydraulic control. It is suitable for multi-row corn harvesting operation scenarios and also realizes interference-free transmission, efficient conveying, smooth folding, and safe control of the 9-row header. Background Technology

[0002] The existing wide-body harvesters equipped with folding headers have several technical defects in practical applications, failing to meet the requirements for efficient and stable harvesting operations. The specific problems are as follows: The 9-row cutting platform adopts a "fixed middle section + folding sections on both sides" layout. The space between the middle section and the main unit is extremely narrow. The conventional external plug-in universal shaft drive shaft is long and occupies a lot of space. It is easy to interfere with the cutting platform and the main unit, and cannot achieve normal transmission and folding. This has become the core bottleneck in the development of the 9-row folding cutting platform. Traditional header pushers use upper and lower hanging plates to fix the pushing auger, with the upper end fixed to the front upper beam of the folding hinge. This occupies the upper conveying space of the auger and easily causes straw blockage. Especially when harvesting lodged corn, the straw falls onto the surface of the auger and is obstructed, which seriously affects the conveying efficiency. The conventional box cover fixing plate hinge shaft position design is unreasonable, which is easy to conflict with the upper cover plate and plastic plate. When modifying or installing, the cover plate needs to be cut. After welding repair, deformation and cracking are easy to occur, resulting in a high failure and maintenance rate. Traditional cutting table folding hinge fixing frame is a simple one-piece structure without a dedicated load-bearing beam design. The hydraulic cylinder hanger can be installed in any position. When the cutting table is folded, the hydraulic driving force is concentrated at a local welding point, which is prone to deformation of the fixing frame and cracking of the welding point. In addition, the folding action is prone to jamming and the two sides are not synchronized. It cannot be adapted to the main vehicle to achieve auxiliary functions such as braking and swaying. Existing folding cutting tables mostly use conventional universal valve groups for splicing, resulting in a chaotic oil circuit layout. External oil pipes are prone to aging and cracking due to large-angle bending, leading to hydraulic oil leakage. Furthermore, there are no dedicated flow and synchronization control components, resulting in unstable operation of the large oil cylinder and poor synchronization between the two side oil cylinders. A single solenoid valve group cannot adapt to the needs of large / small flow oil cylinders. At the same time, there is a lack of dedicated pressure-holding safety valves, which makes the cutting table prone to pressure loss and loosening after folding, posing safety hazards. Summary of the Invention

[0003] To address several technical shortcomings of existing folding headers for wide-body harvesters, this invention provides a transmission-driven folding header adapted for wide-body harvesters. Through an integrated design of the header's main structure and optimized structures including the pusher suspension plate, housing cover fixing plate, folding hinge fixing frame, and hydraulic control valve group, the following invention objectives are achieved: Solve the problem of excessively small transmission clearance in the middle section of multi-ridge headers, achieve interference-free installation, operation and folding of transmission components, and break through the development bottleneck of multi-ridge folding headers; Optimize the crop transport path and make full use of the space above the auger to achieve unobstructed and stable transport of lodged corn and other crops, thereby improving harvesting efficiency. This addresses the structural interference problem at its root, eliminating the need for cover plate cutting and welding, and reducing equipment failure and maintenance rates as well as operating costs. The folding force structure of the cutting platform is optimized to achieve smooth and synchronous folding action, adapt to the hydraulic and electrical systems of the main vehicle, expand the braking and swaying functions, and improve the accuracy of operation. To achieve precise, stable, and safe control of the hydraulic system of the cutting platform, solve problems such as oil circuit cracking, asynchronous operation, and pressure loss, and improve the reliability of the hydraulic system; The cutting table can be folded as a whole, allowing for transport without disassembly, saving transportation time, manpower, and resources, and improving the equipment's practicality and adaptability.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A folding header adapted for wide-body harvesters is disclosed in this invention. The folding header comprises a main header structure, a dedicated transmission system, front and rear lifting plate structures for the header pusher, a housing cover plate fixing plate structure, a header folding hinge fixing frame structure, a folding header hydraulic control valve group structure, and a folding hinge shaft. These structures work together to achieve the overall functions of interference-free transmission, efficient conveying, smooth folding, and precise control of the header. The specific technical solution is as follows: The main structure of the header adopts a split layout with 5 fixed sections in the middle and 2 folding sections on each side. The folding sections on both sides are rotatably connected to the fixed section in the middle through folding hinges. The hinge shaft is installed at the hinge connection to realize the limiting function of folding the folding sections on both sides to the top of the fixed section in the middle. The overall layout reserves the installation space for the dedicated transmission system, avoids transmission gap conflicts from the structural level, and adapts to the needs of 9-row corn harvesting operations.

[0005] Drive shaft structure compression: The traditional external sleeve universal joint is eliminated, and an internal universal fork shaft + compressed universal joint structure is adopted, which greatly shortens the radial dimension of the shaft and reduces space occupation; the connection between the main unit and the cutting table adopts an inner and outer telescopic shaft, which can be freely inserted / pulled out to adapt to the telescopic needs of the cutting table during leveling and swinging, without occupying additional transmission clearance. Optimized bearing housing space: Abandoning conventional large-volume bearing housings, we adopt steel plate bending split bearing housings or integrated tubular bearing housings to simplify the structural volume and precisely install them on both sides of the middle 5 fixed sections; the bearing housing precisely restricts the axial position of the inner shaft, while allowing lateral clearance to the outside to avoid interference with the cutter body and folding components; Transmission connection adaptation: An additional cutter head drive shaft + coupling device is added to achieve flexible connection and separation of the shaft heads of the middle fixed section and the two side folding sections; during operation, the coupling engages the shaft heads, and the power is stably transmitted from the main unit output shaft through the telescopic shaft and universal fork shaft to each row of the cutter head; when folding, the coupling separates the shaft heads to avoid interference of transmission components due to folding force; the main unit output shaft adopts a fixed length design to precisely connect with the telescopic shaft and ensure the reliability of power transmission.

[0006] Structural Design: The design adopts a double-panel front and rear fixed design. The main body of the hanging plate is a double-panel integral structure. One end is fixed to the middle of the rear upright beam of the header frame with bolts, and the other end is rotatably connected to the outer wall of the auger. The height of the upper part of the hanging plate is close to the height of the auger pusher blades, which completely gives up the crop conveying space above the auger. Suitable scenarios: Optimized for harvesting lodged corn, it provides ample and unobstructed transport channels for crop straw, structurally avoiding straw blockage problems.

[0007] Structural Design: The design employs a double hinge shaft + integral plate bending structure, retaining the basic double hinge shaft structure while repositioning and adjusting the front hinge shaft to completely offset it from the upper cover plate and plastic plate, eliminating any interference. The fixing plate is formed by bending a single steel plate into an integral structure integrating the hinge plate and the fixing plate, eliminating the need for separate assembly. The double hinge shaft is securely connected to the fixing plate and the cutter box body via screws, ensuring connection strength and stability. Modification and adaptation: During modification, only a small amount of adaptation processing is required at the rear hinge position. The front hinge does not require cutting the upper cover plate and plastic plate, completely eliminating the cutting and welding process of the traditional structure.

[0008] Core structural design: It adopts an integrated structural design of front and rear fixed beams + central hydraulic cylinder hanger. The main body of the fixed frame is equipped with front and rear symmetrical fixed beams, which are seamlessly and fully welded to the cutting table box and folding hinges to form a stable load-bearing support frame and distribute the hydraulic driving force during folding. The hydraulic cylinder hanger is precisely welded to the middle position of the front and rear fixed beams, so that the driving force of the hydraulic cylinder acts perpendicularly to the force center of the fixed beam, achieving a uniform distribution of folding force. Hydraulic and electrical compatibility design: The fixed frame is reserved with a hydraulic oil port docking position for the main vehicle. The hydraulic oil output from the main vehicle of the harvester drives the cylinder to extend and retract, so as to realize the smooth unfolding and folding of the header. The frame is equipped with an electrical signal interface, which can receive electrical signals output and feedback from the main vehicle, and realize the braking and alignment of the header during operation, as well as the up and down swing function of the two sides of the header, to adapt to complex harvesting conditions in the field. Connection and fixing method: The hydraulic cylinder hanger and hydraulic cylinder are fixed with a pin shaft, which can rotate flexibly to adapt to the angle changes when the hydraulic cylinder extends and retracts, ensuring smooth folding action without jamming; the full welding process of the fixing frame, the cutting table box and the folding hinge improves the overall structural strength and avoids loosening and deformation during folding.

[0009] Modular core component integrated design: This design integrates an adjustable check valve, main solenoid valve assembly, small solenoid valve assembly, synchronization valve, safety valve, and symmetrical port connectors into a single valve block. The adjustable check valve precisely controls the unidirectional inlet and outlet oil flow, ensuring smooth deployment and retraction of the two large cylinders. The main solenoid valve assembly is adapted to high-flow oil circuits, enabling precise reversal of the main oil circuit for folding / unfolding the cutter head. The small solenoid valve assembly is specifically adapted to the low-flow oil circuits of the cylinders, matching their low-flow pressure requirements. The synchronization valve adjusts the inlet and outlet oil flow of both cylinders in real time, forcibly ensuring synchronized operation. The safety valve maintains pressure in the hydraulic system, automatically locking the pressure after the cutter head is folded / unfolded. The symmetrical port connectors precisely connect to the symmetrical ports of the bidirectional cylinders, achieving integrated control of cylinder extension / retraction and locking / unlocking, with high interface compatibility and no hydraulic oil leakage. Optimized straight-line oil circuit layout: The internal oil circuit of the valve group is designed in an integrated manner according to the hydraulic action requirements of the cutting table, with a simple and straight path and no unnecessary bends; all external oil pipes are straight or connected at a small angle, which completely solves the problem of cracking of steel wire rubber oil pipes after long-term large-angle bending and extends the service life of the oil pipes. Overall structural design: All components are integrated into a single valve block, which is compact and small in size, making it easy to install in the reserved position on the cutting table without taking up extra space; the valve block has a pre-set standardized installation interface, which can be precisely connected with the hydraulic cylinder of the cutting table and the hydraulic system of the main vehicle, making installation and debugging convenient.

[0010] The transmission folding header adapted for wide-body harvesters of the present invention is an integrated structure, consisting of a header body (5 fixed sections in the middle + 2 folding sections on each side), a dedicated transmission system (internal universal fork shaft, compression universal joint, steel plate bent split / integral tubular bearing seat, inner and outer telescopic shaft, header drive shaft + coupling device, main unit fixed output shaft), header pusher front and rear hanging plate structure, box cover plate fixing plate structure, header folding hinge fixing frame structure, folding header hydraulic control valve group structure, and folding hinge shaft; each component is standardized and modularly connected, working together to achieve interference-free transmission, efficient crop transport, smooth folding, precise hydraulic control and auxiliary operation functions for 9-row and multi-row headers.

[0011] The transmission folding header adapted for wide-body harvesters of the present invention, through the synergistic innovation of the header body and five supporting optimized structures, addresses several core defects of existing technologies, achieving technological breakthroughs and functional upgrades, and possessing the following significant beneficial effects: 1. Breakthrough in the development bottleneck of multi-row headers: Through structural optimization of the dedicated transmission system, the core problem of excessively small transmission clearance in the middle section of multi-row headers such as 9-row headers is completely solved, realizing interference-free installation, operation and folding of transmission components, turning the 9-row folding header from concept into practical equipment, filling the technological gap in the field of 9-row harvesting of wide-body harvesters; 2. Significantly improve crop conveying efficiency: The front and rear hanging plate structure of the header pusher completely frees up the conveying space above the auger, leaving ample and unobstructed channels for crop straw, completely solving the clogging problem of traditional upper and lower hanging plates. It is especially suitable for harvesting lodged corn. After the outer section of straw falls onto the surface of the auger, it can be conveyed smoothly without obstruction, greatly reducing the clogging failure rate and improving harvesting efficiency and adaptability to complex field conditions. 3. Reduce structural interference and maintenance costs at the source: The box cover fixing plate structure uses a front hinge shaft shifting design to eliminate the cutting and welding process of the upper cover plate and plastic plate, thus avoiding deformation and cracking after welding at the source. Equipment failures are reduced by more than half, significantly reducing maintenance costs and downtime. At the same time, the overall bending structure and screw fixing method improve structural stability, ensuring no shaking or displacement during operation. 4. Achieve smooth folding and functional expansion of the header: The header folding hinge fixing frame structure, through the design of front and rear fixing beams + central hydraulic cylinder hanger, achieves uniform distribution of folding force, completely solving the problems of local stress, deformation and cracking of traditional fixing frames. This ensures that the header unfolds and folds smoothly and synchronously, without jamming or deviation. At the same time, it is compatible with the main vehicle's hydraulic and electrical systems, realizing braking and alignment, and header swaying functions, improving the accuracy of harvesting operations and adaptability to field conditions. 5. Enhanced reliability and safety of the hydraulic system: The hydraulic control valve group structure of the folding header achieves precise control of the header's hydraulic movements through modular component integration and a linear oil circuit layout; the dual control of adjustable check valves and synchronization valves enables smooth operation of the large cylinder and synchronous extension and retraction of the cylinders on both sides; the external oil pipes have no large-angle bends, avoiding pipe cracking and leakage; large / small solenoid valve groups control the corresponding flow cylinders, ensuring precise matching of pressure and flow; the safety valve locks the pressure after it is in position, preventing the header from loosening on its own and ensuring structural safety during transportation, parking, and operation. 6. Enhance the overall practicality and adaptability of the equipment: The header can be folded as a whole and transported without disassembly, saving transportation time, manpower and resources, and avoiding the impact of weather on grain storage; all supporting structures adopt a modular design, which is convenient for individual disassembly and maintenance. In addition to the dedicated transmission system, the front and rear hanging plates of the header pusher, the fixing plate of the box cover, the header folding hinge fixing frame, the hydraulic control valve group of the folding header and other structures can be adapted to the folding headers of wide-body harvesters with other ridge numbers, which has broad application prospects and promotion value; 7. Enhance overall equipment durability: All structures adopt high-strength connection methods and optimized design, such as full welding process, screw fixing, and pin connection to ensure structural strength and avoid loosening, deformation and cracking during operation and folding, which greatly improves the overall durability and service life of the cutting table. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the transmission folding header adapted to a wide-body harvester according to the present invention; Figure 2 This is a schematic diagram of the structural assembly of the transmission system specific to this invention; Figure 3 This is a schematic diagram of the installation of the front and rear hanging plate structure of the cutting platform pusher of the present invention; Figure 4 This is a three-dimensional structural diagram of the box cover fixing plate structure of the present invention; Figure 5 This is an assembly diagram of the folding hinge fixing frame structure of the cutting table of the present invention; Figure 6 This is an integrated schematic diagram of the hydraulic control valve group structure of the folding cutter of the present invention; Figure 7 This is a schematic diagram of the structure of a folding header with one side folded and the other side unfolded, representing one type of ridge spacing in the multi-ridge spacing of the present invention.

[0013] The components include: 1. Front and rear lifting plate structure of the header pusher; 2. Cover plate fixing plate structure of the box; 3. Header folding hinge fixing frame; 4. Hydraulic cylinder; 5. Header body; 6. Folding hinge shaft; 7. Header drive shaft; 8. Coupling device; 9. Internal insertion universal fork shaft; 10. Telescopic shaft; 11. Compression universal joint; 12. Main unit fixed output shaft; 13. Safety valve; 14. Oil port connector; 15. Adjustable check valve; 16. Small solenoid valve assembly. Detailed Implementation

[0014] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see the appendix Figure 1 - Appendix Figure 5This invention provides a transmission-driven folding header adapted to a wide-body harvester, comprising a header main structure 5, a dedicated transmission system, a header pusher front and rear suspension plate structure 1, a housing 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; the header main structure 5 is a split layout with a middle ridge fixed section and folding sections on both sides, the folding sections on both sides are connected to the middle fixed section via folding hinges, and the folding hinge shaft 6 is installed at the hinge connection to achieve folding limit; dedicated... The transmission system includes an internal universal fork shaft 9, a compression universal joint 11, a steel plate bent and welded split / integral tubular bearing housing, an inner and outer telescopic shaft 10, a header drive shaft 7 + coupling device 8, and a main unit fixed output shaft 12. The bearing housing is mounted on both sides of the middle fixed section. The internal universal fork shaft 9 and the compression universal joint 11 are fitted inside the bearing housing. The header drive shaft 7 + coupling device 8 connects the middle fixed section and the shaft ends of the two side folding sections. The main unit fixed output shaft 12 is precisely connected to the inner and outer telescopic shaft 10. The header pusher... The front and rear hanging plate structure 1 is a double-panel integrated structure. One end is fixed to the middle of the rear upright beam of the cutting table frame with bolts, and the other end is rotatably connected to the outer wall of the auger. The height of the upper part of the hanging plate is close to the height of the auger pusher blades. The box cover plate fixing plate structure 2 is an integrated structure of double hinge shafts and integral plate bending. The front hinge shaft is designed to be shifted so that it does not interfere with the upper cover plate and plastic plate. The double hinge shafts are fixedly connected to the fixing plate and the cutting table box with screws. The cutting table folding hinge fixing frame structure 3 is an integrated structure of front and rear fixing beams and the middle hydraulic cylinder 4 hanger. The structure features seamless full welding between the front and rear fixed beams and the cutter box body and folding hinges. The hydraulic cylinder 4 hanger is welded to the middle of the front and rear fixed beams, and the hydraulic cylinder 4 is fixed to the hydraulic cylinder 4 hanger by a pin. The frame body has a reserved hydraulic oil port for the main vehicle to connect to the electrical signal interface. The hydraulic control valve group of the folding cutter has a modular integrated structure. The integrated valve block integrates an adjustable one-way valve 15, a main solenoid valve group, a small solenoid valve group 16, a synchronous valve, a safety valve 13, and symmetrical oil port connectors 14. The internal oil circuit has a straight layout, and the external oil pipes are connected in a straight or small angle.

[0016] Specifically, the fixed section of the middle ridge is connected to the folded sections of each ridge on both sides by folding hinges. The folding hinge shaft 6 is installed at the hinge connection to achieve folding limit of the folded sections on both sides. The header folding hinge fixing frame 3 is welded to the header body 5. The front and rear fixed beams are seamlessly welded to the header box and the folding hinges. The hydraulic cylinder 4 hanger is precisely welded to the middle of the front and rear fixed beams. The hydraulic cylinder 4 is fixed to the hydraulic cylinder 4 hanger by a pin. The hydraulic control valve group of the folding header is installed in the reserved hydraulic installation position of the header through a standardized interface. The symmetrical oil port connector 14 is precisely connected to the bidirectional hydraulic cylinder 4 of the header. The oil inlet of the valve group is connected to the output end of the main vehicle hydraulic system to complete the hydraulic system docking. The main vehicle electrical signal line is connected to the preset electrical signal interface of the header folding hinge fixing frame 3 to complete the linkage debugging of the electrical system.

[0017] Please see the appendix Figure 1 - Appendix Figure 3 The inner and outer telescopic shaft 10 of the dedicated transmission system can be freely inserted / pulled out to adapt to the telescopic needs of leveling and swinging the cutting table, without taking up additional transmission clearance.

[0018] Specifically, steel plate bent split bearing seats or integrated tubular bearing seats are installed on both sides of the fixed section of the middle ridge, and the internal insert universal fork shaft 9 and the compression universal joint 11 are assembled in the bearing seats; the cutter head drive shaft 7 and the coupling device 8 connect the shaft heads of the middle fixed section and the two side folding sections to realize the flexible combination and separation of the shaft heads; the main unit fixed output shaft 12 is precisely connected to the inner and outer sleeve telescopic shaft 10 of the cutter head to ensure that the telescopic shaft 10 can be flexibly inserted / pulled out to adapt to the leveling and swinging requirements of the cutter head.

[0019] Please see the appendix Figure 3 - Appendix Figure 7 The front and rear hanging plate structure 1 of the header pusher has a hanging plate seat welded to the middle section of the rear upright beam at the rear end of the hanging plate and a hanging plate connected to the pusher shaft at the front. The upper part of the hanging plate is aligned with the outer circle edge of the pusher blade. The structure completely leaves the upper conveying space of the pusher auger, preventing blockage. In particular, when harvesting lodged corn stalks, they will fall onto the pusher auger, forming an unobstructed and smooth crop conveying channel. The box cover plate fixing plate structure 2 is formed by bending a single piece of steel plate as a whole, without the need for separate assembly. During modification, only a small amount of adaptation treatment is required at the rear hinge shaft position, without the need to cut the upper cover plate and plastic plate.

[0020] Specifically, one end of the front and rear hanging plate structure 1 of the cutting table pusher is fixed to the middle of the rear upright beam of the frame with bolts, and the other end is rotatably connected to the outer wall of the pushing auger. During installation, ensure that the height of the upper part of the hanging plate is close to the height of the blades of the auger pusher, and do not intrude into the upper conveying space of the auger. The box cover plate fixing plate structure 2 adopts a single steel plate integrally bent to form a hinge plate and fixing plate integrated structure. The front hinge shaft is moved and installed to ensure no interference with the upper cover plate and plastic plate. The double hinge shaft is firmly connected to the fixing plate and the cutting table box with screws. During the modification, only a small amount of adaptation treatment is required at the position of the rear hinge shaft, and there is no need to cut the cover plate and plastic plate.

[0021] Please see the appendix Figure 3 - Appendix Figure 7The hydraulic cylinder 4 hanger of the folding hinge fixing frame structure 3 of the cutting table ensures that the driving force of the hydraulic cylinder 4 acts perpendicularly to the center of the fixed beam. The adjustable one-way valve 15 of the hydraulic control valve group structure of the folding cutting table precisely controls the one-way inlet and outlet oil flow. The synchronous valve adjusts the inlet and outlet oil flow of the two cylinders 4 in real time to ensure synchronous action. The safety valve 13 realizes pressure locking after the hydraulic system cutting table is folded / unfolded. The main solenoid valve group and the small solenoid valve group 16 are adapted to the large and small flow oil circuit requirements respectively. The cutting table drive shaft 7 + coupling device 8 can realize the flexible combination and separation of the shaft heads of the middle fixed section and the two side folding sections. The middle section of the 9-row cutting table has 5 rows on both sides. The distance between the bearing housing and the shaft head of the fixed output shaft 12 of the harvester main unit is relatively short. Through research and development, the transmission shaft 7 of the header and the bearing housing in the middle are moved outward to realize the transmission folding function of the 9-row folding header. The electrical signal interface of the header folding hinge fixing frame structure 3 can receive the electrical signal of the main vehicle. The symmetrical oil port connector 14 of the hydraulic control valve group structure of the folding header is precisely connected with the symmetrical oil port of the two-way oil cylinder 4. The front and rear hanging plate structure 1 of the header pusher, the box cover fixing plate structure 2, the header folding hinge fixing frame structure 3, and the hydraulic control valve group structure of the folding header can be directly adapted to the folding headers of wide-body harvesters of different models and different number of rows.

[0022] Specifically, according to the needs of the header operation, adjust the flow parameters of the adjustable one-way valve 15 of the hydraulic control valve group of the folding header, and adjust the synchronization accuracy of the synchronization valve to ensure that the two cylinders 4 move synchronously; preset the pressure holding value of the safety valve 13 to achieve automatic pressure locking after the header is unfolded / folded into place; adjust the electrical system to ensure that the braking alignment and the header's up-and-down swing functions are normal. During operation, the coupling device 8, combined with the shaft heads of the middle fixed section and the two side folding sections, and the main unit fixed output shaft 12, transmits the rotational power stably to each row of the header through the inner and outer sleeve telescopic shaft 10 and the inner insert universal fork shaft 9, and the auger rotates to transport crops; the crop straw is pushed forward along the auger's spiral blades, and the upper space provided by the front and rear hanging plate structure 1 of the header pusher provides a smooth passage for the straw. After the outer stalks of the lodged corn fall onto the auger surface, they are transported smoothly without obstruction, accumulation, or blockage. During operation, the main vehicle's electrical signals control the cutting platform's braking, alignment, and vertical swaying, adapting to complex harvesting conditions and improving operational accuracy. The hydraulic system uses control valve groups to achieve precise oil circuit reversal and flow control, ensuring the stability of the cutting platform operation. When folding and transport are required, the main vehicle's hydraulic control system is operated, and the main solenoid valve group of the folding cutting platform hydraulic control valve group reverses the oil circuit. The main vehicle outputs hydraulic oil to drive the cylinder 4 to extend and retract, transmitting uniform driving force through the cutting platform folding hinge fixing frame 3, causing the folding sections on both sides of the ridge to fold around the folding hinge shaft 6 to the top of the middle ridge fixing section. The folding hinge shaft 6 achieves folding limit. During the folding process, the coupling device 8 automatically... The central fixed section and the two folding sections are separated by a shaft head. The inner and outer sleeve telescopic shaft 10 adapts to the folding swing amplitude, and the transmission components are free from force interference. After folding to the correct position, the safety valve 13 automatically locks the hydraulic pressure to prevent the cutting table from loosening on its own. After the cutting table is folded as a whole, its size is greatly reduced. No parts need to be disassembled, and it can be directly transported, saving transportation time and manpower. It is compatible with various transport vehicles and avoids transportation difficulties caused by excessive cutting table width. Each component adopts a modular design, which is convenient for individual disassembly and maintenance. Regularly check the bearing seats, internal universal fork shaft 9, and coupling device 8 of the transmission system to ensure that the transmission is free from jamming. Regularly check the control valve group, oil pipes, and oil port joints 14 of the hydraulic system to ensure that there is no hydraulic oil leakage and adjust the valve group parameters to the optimal state. Regularly check... Check welded joints, screw fixing positions, and pin connection positions, tighten loose parts in a timely manner, and repair cracked welds; regularly clean straw and debris between the auger and the front and rear hanging plate structures 1 of the header pusher to ensure unobstructed conveying channels. In addition to the header body 5 of this invention being adapted to the dedicated transmission system of the folding header for corn ridges, the front and rear hanging plate structures 1 of the header pusher, the box cover fixing plate structure 2, the header folding hinge fixing frame 3, and the hydraulic control valve group of the folding header can all be directly adapted to the folding headers of wide-body harvesters of different models and different number of ridges; when replacing the hydraulic cylinder 4, only the flow parameters of the hydraulic control valve group need to be finely adjusted to achieve precise adaptation without additional modification; the overall structure can be adjusted according to the actual harvesting needs to adjust the ridge layout of the folding section and the fixed section to adapt to multi-ridge harvesting scenarios.

[0023] Workflow: Connect the fixed section of the middle ridge to the folding sections of each ridge on both sides using folding hinges. Folding hinge shafts 6 are installed at the hinge connection points to limit the folding of the folding sections on both sides. Weld the header folding hinge fixing frame 3 to the header body 5. Fix the hydraulic cylinder 4 to the cylinder 4 hanger via a pin. Install the folding header hydraulic control valve assembly into the reserved hydraulic installation position on the header using a standardized interface. Precisely align the symmetrical oil port connector 14 with the header's bidirectional cylinder 4. Connect the valve assembly inlet to the output end of the main vehicle's hydraulic system. Then connect the main vehicle's electrical signal line to... The pre-set electrical signal interface of the folding hinge fixing frame 3 of the header completes the linkage debugging of the electrical system. The steel plate bending split bearing seat or integrated tube bearing seat is installed on both sides of the middle ridge fixing section. The internal insertion universal fork shaft 9 and the compression universal joint 11 are assembled in the bearing seat. The header drive shaft 7 and the coupling device 8 connect the shaft head of the middle fixing section and the two side folding sections to realize the flexible combination and separation of the shaft head. The main unit fixed output shaft 12 is precisely connected to the inner and outer sleeve telescopic shaft 10 of the header to ensure that the telescopic shaft 10 can be flexibly inserted / pulled out to adapt to the leveling and swinging requirements of the header. According to the operating requirements of the header, adjust the flow parameters of the adjustable one-way valve 15 of the hydraulic control valve group of the folding header, and adjust the synchronization accuracy of the synchronization valve to ensure that the two cylinders 4 move synchronously. Set the safety valve 13 to the preset pressure value to achieve automatic pressure locking after the header is unfolded / folded. Adjust the electrical system to ensure that the braking and oscillation functions of the header are normal. During operation, the coupling device 8 connects the middle fixed section and the two side folding section shafts. The main unit fixed output shaft 12 transmits the rotational power stably through the telescopic shaft 10 and the internal universal fork shaft 9. At each row of the header, the auger rotates and transports the crop; the crop stalks are pushed forward along the spiral blades of the auger. The upper space provided by the front and rear hanging plate structure 1 of the header pusher provides a smooth passage for the stalks. The outer stalks of the lodged corn fall onto the surface of the auger and are transported smoothly without obstruction, accumulation, or blockage. During operation, the header is braked, aligned, and oscillated up and down through the main vehicle's electrical signals, adapting to complex harvesting conditions in the field and improving operational accuracy. The hydraulic system achieves precise switching and flow control of the oil circuit through the control valve group, ensuring the stability of the header operation.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transmission folding header adapted to a wide-body harvester, comprising a header main structure (5), a dedicated transmission system, a header pusher front and rear hanging plate structure (1), 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); characterized in that: The main structure (5) of the header is a split layout consisting of a fixed section in the middle ridge and folding sections on both sides. The folding sections on both sides are connected to the fixed section in the middle via folding hinges. The folding hinge shaft (6) is installed at the hinge connection to achieve folding limit. The dedicated transmission system includes an internal universal fork shaft (9), a compression universal joint (11), a steel plate bending and welding split / integral tubular bearing seat, an inner and outer telescopic shaft (10), a header transmission shaft (7) + a coupling device (8), and a main unit fixed output shaft. (12) The bearing seats are installed on both sides of the middle fixed section. The internal universal fork shaft (9) and the compression universal joint (11) are fitted in the bearing seats. The cutting table drive shaft (7) + coupling device (8) connects the shaft heads of the middle fixed section and the two side folding sections. The main machine fixed output shaft (12) is precisely connected to the inner and outer sleeve telescopic shaft (10). The front and rear hanging plate structure (1) of the cutting table pusher is a double panel type integral structure. One end is fixed to the middle of the rear upright beam of the cutting table frame by bolts, and the other end is connected to the folding part of the pusher auger. The internal hexagonal shaft is rotated and connected, and the height of the upper part of the hanging plate is close to the height of the auger pusher blade; the box cover plate fixing plate structure (2) is an integrated structure of double hinge shaft + integral plate bending and forming, the front hinge shaft is designed to be shifted and has no interference with the upper cover plate and plastic plate, and the double hinge shaft is fixedly connected to the fixing plate and the cutting table box by screws; the cutting table folding hinge fixing frame structure (3) is an integrated structure of front and rear fixed beams + middle oil cylinder (4) hanger, the front and rear fixed beams and the cutting table folding hinge are seamlessly welded, and the oil The cylinder (4) hanger is welded to the middle of the front and rear fixed beams. The hydraulic cylinder (4) is fixed to the main frame of the cylinder (4) by a pin. The valve body is reserved for the main vehicle hydraulic oil port to be connected to the electrical signal interface. The hydraulic control valve group of the folding cutter is modular and integrated. The integrated valve block integrates an adjustable check valve (15), a main solenoid valve group, a small solenoid valve group (16), a synchronous valve, a safety valve (13), and a symmetrical oil port connector (14). The internal oil circuit is laid out in a straight line, and the external oil pipe is connected in a straight line or at a small angle.

2. The transmission folding header adapted to a wide-body harvester according to claim 1, characterized in that, The inner and outer telescopic shaft (10) of the dedicated transmission system can be freely inserted / pulled out to adapt to the telescopic needs of the cutting table leveling and swinging, without occupying additional transmission clearance.

3. A transmission folding header adapted to a wide-body harvester according to claim 1, characterized in that, The front and rear hanging plate structure (1) of the header pusher has the rear end of the hanging plate connected to the hanging plate seat welded to the middle section of the rear upright beam, the front end of the hanging plate connected to the pusher shaft, and the upper part of the hanging plate aligned with the outer circle edge of the pusher blade. The structure completely allows the upper conveying space of the pusher auger, without blockage. In particular, when harvesting lodged corn stalks, they will fall onto the pusher auger, forming an unobstructed and smooth crop conveying channel.

4. A transmission folding header adapted to a wide-body harvester according to claim 1, characterized in that, The box cover fixing plate structure (2) is formed by bending a single steel plate as a whole, without the need for separate assembly. During modification, only a small amount of adaptation treatment is required at the rear hinge shaft position, without the need to cut the plastic plate at the front shaft position of the upper cover plate.

5. A transmission folding header adapted to a wide-body harvester according to claim 1, characterized in that, The hydraulic cylinder (4) hanger of the cutting table folding hinge fixing frame structure (3) enables the driving force of the hydraulic cylinder (4) to be used to fix the stress center of the beam.

6. A transmission folding header adapted to a wide-body harvester according to claim 1, characterized in that, The adjustable one-way valve (15) of the hydraulic control valve group structure of the folding cutter precisely controls the one-way inlet and outlet oil flow. The synchronous valve adjusts the inlet and outlet oil flow of the two cylinders (4) in real time to ensure synchronous action. The safety valve (13) realizes the pressure lock after the hydraulic system cutter is folded / unfolded. The main solenoid valve group and the small solenoid valve group are adapted to the large and small flow oil circuit requirements respectively through the main vehicle signal and the limit switch signal (16) at the folding point of the cutter.

7. A transmission folding header adapted to a wide-body harvester according to claim 1, characterized in that, The cutter drive shaft (7) + coupling device (8) can realize the flexible combination and separation of the shaft heads of the middle fixed section and the two side folding sections. The distance between the bearing seats on both sides of the middle section of the 9-row cutter and the shaft head of the fixed output shaft (12) of the harvester host is relatively short. After research and development, the cutter drive shaft (7) and bearing seats in the middle are moved outward to realize the transmission folding function of the 9-row folding cutter.

8. A transmission folding header adapted to a wide-body harvester according to claim 1, characterized in that, The limit signal switch interface of the cutter folding hinge fixing frame structure (3) can receive the main vehicle electrical signal.

9. A transmission folding header adapted to a wide-body harvester according to claim 1, characterized in that, The symmetrical oil port connector (14) of the hydraulic control valve group structure of the folding cutting table is precisely connected to the symmetrical oil port pipeline of the bidirectional oil cylinder (4) with a small-angle bend.

10. A transmission folding header adapted to a wide-body harvester according to any one of claims 1-9, characterized in that, The front and rear hanging plate structure (1), the box cover plate fixing plate structure (2), the folding hinge fixing frame structure (3), and the hydraulic control valve group structure of the folding header can be directly adapted to the folding headers of wide-body harvesters of different models and different number of rows.

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