A bush harvester header

Abstract

This invention relates to a shrub harvester header, comprising a frame, two sets of transmission assemblies, two sets of cutting assemblies, two sets of feeding assemblies, and an auxiliary feeding assembly. The two transmission assemblies are bolted to the frame and are symmetrical about the frame axis. The auxiliary feeding assembly is located behind the header. The cutting assembly is connected to the output end of the sun gear shaft of the transmission assembly, rotating at high speed in opposite directions. The inner ring of the feeding assembly's connecting flange is connected to the output end of the low-speed transmission sleeve of the transmission assembly, rotating at low speed in opposite directions. The cutting assembly and the feeding assembly rotate coaxially and in the same direction at different speeds. A flexible connection is used between the transmission assembly and the cutting assembly to protect the cutter blade. A contour wheel and a transverse contouring mechanism enable longitudinal and transverse contouring of the header. This invention has the advantages of simple and stable structure, smooth transmission, and high harvesting efficiency, and can significantly improve the efficiency and quality of shrub harvesting.

Description

Technical Field

[0001] This invention relates to the forestry field, and more particularly to a cutting platform for a shrub harvester. Background Technology

[0002] Shrubs can prevent wind erosion and sand fixation, conserve water and soil, improve ecosystems, and are also used in papermaking, fiberboard production, and animal feed. They are also important industrial raw materials for biomass power generation. my country has large areas of shrub forests, and shrub plants have good development and utilization value. Fully utilizing this resource has great practical value and a positive promoting effect on the development of local animal husbandry in desert areas. Currently, most shrub harvester headers are modified from silage harvesting equipment or directly use silage headers. The feeding mechanism and cutting mechanism are directly connected and rotate synchronously. The high-speed feeding mechanism and feeding device cannot be effectively matched, which easily leads to "stuck-up and material blockage," resulting in low cutting efficiency, poor cutting effect, and high header failure rate. At the same time, existing headers have problems such as poor terrain adaptability, easy damage to the cutting blades, and uneven stubble. Therefore, researching and designing a shrub harvester header with a reasonable structure, good performance, and strong adaptability to solve the problem of difficult shrub harvesting in my country has significant social and economic benefits.

[0003] Chinese invention patent (application number CN202311460643.X) discloses a header device for a Caragana korshinskii shrub coppicing harvester, including a header frame assembly, two header gearboxes, two feed cylinder assemblies, two cutter disc assemblies, and a feed stop bracket. The two header gearboxes are connected and fixed to the header frame assembly, rotating in opposite directions. The two feed cylinder assemblies are respectively fixedly connected to one output end of the lower part of each of the two header gearboxes. The two cutter disc assemblies are respectively fixedly connected to the other output end of each of the two header gearboxes. Driven by a hydraulic motor, the device increases the speed of the cutter disc in the Caragana korshinskii shrub coppicing harvester. Through three-stage speed reduction and torque increase in the header gearbox, greater torque is provided to the feed device, resulting in smoother crop feeding and meeting the greater feeding capacity requirements of the conveying mechanism. The hydraulic motor drive reduces the failure rate and vibration of belt drives, effectively ensuring the coppicing requirements of Caragana korshinskii shrubs and improving harvesting efficiency. However, the invention does not involve the design of a contour-following device for the cutting platform during shrub harvesting, resulting in poor terrain adaptability and difficulty in ensuring the stubble height.

[0004] Chinese utility model patent (application number CN202222054985.9) discloses a forced-inlet dual-drive disc-type shrub harvester, comprising a bevel gear transmission box, a harvester frame, disc cutters, inlet finger discs, a triple-linked stop belt, and a seated bearing. The harvester frame is symmetrically arranged, with two sets of disc cutters and forced-inlet trays symmetrically arranged at the front of the harvester frame. The upper and lower longitudinal support plates welded to the harvester frame for the disc cutters and forced-inlet trays are inclined forward at 9-11° from the vertical. However, this harvester uses a rigid connection, which may lead to connection failure or damage under excessive load or significant deviation. Summary of the Invention

[0005] To address the shortcomings of existing equipment, the purpose of this invention is to solve the problems of ineffective matching between the high-speed feeding mechanism and the feeding device, poor adaptability of the cutting table to terrain, and easy damage to the cutting blade. To achieve the above objectives, the technical solution adopted by this invention is as follows:

[0006] A shrub harvester header includes a frame, two sets of transmission assemblies, two sets of cutting assemblies, two sets of feeding assemblies, and an auxiliary feeding assembly. The two sets of transmission assemblies are bolted to the frame and are symmetrical with respect to the frame axis. The cutting assembly is connected to the output end of the sun gear shaft of the transmission assembly through a shrink sleeve I. The inner ring of the feeding assembly connecting flange is connected to the output end of the low-speed transmission sleeve of the transmission assembly through a shrink sleeve II. The rotational speed of the feeding assembly is 1 / 6 to 1 / 7 of the rotational speed of the cutting assembly. The installation positions of the transmission assembly, feeding assembly, and cutting assembly are symmetrical with respect to the frame, and the two sets of cutting assemblies have a 35mm overlap in the horizontal direction. The auxiliary feeding assembly is installed at the rear of the header.

[0007] Further defining the transmission assembly, it includes a sun gear shaft, planetary gears, an internal gear ring, a planetary gear shaft, an upper housing, a lower housing, a planetary carrier, and a low-speed transmission sleeve. The sun gear shaft gear portion meshes externally with three planetary gears, and the three planetary gears mesh internally with the internal gear ring. Weight reduction holes are provided on the planetary gears. The planetary gears are fixedly mounted on the planetary gear shaft, which is bolted to the planetary carrier. The low-speed transmission sleeve is welded to the planetary carrier, and an angular contact ball bearing with its opening facing upwards is installed between the low-speed transmission sleeve and the sun gear shaft. An angular contact ball bearing with its opening facing upwards is also installed between the lower housing and the low-speed transmission sleeve. Skeleton-type sealing rings are installed between the sun gear shaft and the upper housing, between the sun gear shaft and the low-speed transmission sleeve, and between the low-speed transmission sleeve and the lower housing. The power input end of the sun gear shaft can be connected to a hydraulic motor, pulley, sprocket, or other devices for power transmission.

[0008] Further defining the cutting assembly, the assembly includes a cutter head fixing shaft, a spring, elastic sleeve support cylinders, elastic sleeves, a cutter head, cutting blades, a connecting flange, and a shrink sleeve II. The cutter head has a disc-shaped structure, with a circular plane on both the inner and outer rings. The height difference between the upper and lower planes is 120mm, and both planes have mounting holes evenly distributed around the axis. Eight cutting blades are fixedly mounted on the outer ring plane of the cutter head using countersunk hexagonal bolts, forming a circular cutting blade with an outer ring diameter of 950mm. Six elastic sleeve support cylinders are welded into the circular holes evenly distributed around the center line on the inner ring plane of the cutter head. The elastic sleeves are installed inside the elastic sleeve support cylinders. The outer ring of the connecting flange has six circular holes, and the holes are straight. The diameter is smaller than the inner diameter of the elastic sleeve; the cutter head fixing shaft passes through the round hole of the connecting flange and the elastic sleeve, and the lower end shoulder abuts against the upper surface of the connecting flange; there is a 2mm gap between the upper shoulder of the cutter head fixing shaft and the upper surface of the elastic sleeve support cylinder; a spring is installed between the upper shoulder of the cutter head fixing shaft and the upper surface of the cutter head. Under normal conditions, the spring is in a compressed state and is used to apply preload to the cutter head. The outer ring of the elastic sleeve and the inner ring of the elastic sleeve support cylinder, the cutter head fixing shaft and the connecting flange, and the cutter head fixing shaft and the inner ring of the elastic sleeve all adopt an overfit to ensure that each component can provide stable support; when the axial force on the cutter is greater than the preload, the elastic sleeve is compressed and deformed, and the cutter head deflects axially.

[0009] Further defined, the material feeding assembly includes a material feeding cylinder cover, a material feeding cylinder, an expansion sleeve I, a support frame, and material feeding plates; the material feeding cylinder cover is bolted to the top of the material feeding cylinder; the diameter of the material feeding cylinder is 2 / 5 of the outer diameter of the cutter's outer ring; the material feeding cylinder is bolted to the outer ring of the support frame; the inner ring of the support frame is bolted to the outer ring of the low-speed transmission sleeve; four layers of evenly distributed material feeding plates are welded on the circumference of the material feeding cylinder; each layer of material feeding plates is staggered and the length of the material feeding plates gradually decreases from bottom to top; a 15mm gap is left between the lower surface of the material feeding cylinder and the upper surface of the cutter head.

[0010] Further defining the frame, it comprises a machine frame welded from square steel pipes and steel plates, a cutting table transverse contouring component, contouring wheels, a contouring wheel steering mechanism, a contouring wheel support frame, a limiting plate, and shock absorbers; the steel plates are laid and welded according to the structure of the frame; the contouring wheels are installed below the contouring wheel steering mechanism, the contouring wheel steering mechanism is hinged to the contouring wheel support frame, and the contouring wheel support frame is symmetrically installed on both sides of the machine frame with U-bolts; the contouring wheel support frame and the contouring wheel steering mechanism are connected by a pin shaft, the contouring wheel steering mechanism forms a 20° angle with the vertical direction, the contouring wheels can swing up and down around the pin shaft, and the contact point of the contouring wheels is located in front of the cutter; the limiting plate has an arc groove, the ungrooved side is welded to the contouring wheel steering mechanism, and the other side is connected to the contouring wheel support frame by a pin shaft.

[0011] Further specifying, the cutting table transverse contouring assembly includes a cutting assembly mounting bracket, a support spring rod, a transverse contouring connecting assembly, and a hydraulic push rod; one side of the support spring rod is hinged to the side of the transverse contouring connecting assembly, and the other side is fixedly connected to the longitudinal beam on the side of the frame; one side of the hydraulic push rod is hinged to the frame, and the other side is hinged to the transverse contouring connecting assembly; two connecting shafts are welded to the front and rear side plates of the cutting assembly mounting bracket, one of which passes through the transverse contouring connecting assembly and connects to the frame, allowing the cutting assembly mounting bracket and the transverse contouring connecting assembly to rotate relative to the frame around this connecting shaft, and the other connecting shaft is fixedly connected only to the transverse contouring connecting assembly. The two connecting shafts fix the cutting assembly mounting bracket and the transverse contouring connecting assembly together, facilitating subsequent maintenance and replacement.

[0012] Further specifying, the auxiliary feeding assembly includes a linkage feeding mechanism, a feeding roller, and two transmission pulleys; the linkage feeding mechanism is located below the feeding roller, directly behind the cutting assembly; a base plate is installed above the linkage feeding mechanism, and the base plate has a toothed through groove; the two transmission pulleys are respectively installed on the same side shaft end of the linkage feeding mechanism and the feeding roller, and the two transmission pulleys have the same diameter; the linkage feeding mechanism includes an active linkage, a limiting linkage, a passive linkage, a lever, and a lever connecting shaft; one side connection hole of the active linkage is fixedly connected to the transmission shaft, and the other side connection hole is hinged to the middle hole of the passive linkage; one side connection hole of the limiting linkage is hinged to the side plate of the frame, and the other side connection hole is hinged to the lower hole of the passive linkage; the two lever connecting shafts are respectively connected to the middle hole and the upper hole of the passive linkage; the levers are evenly installed on the lever connecting shafts, and the length of the lever at the middle position of the cutting table is greater than that on both sides.

[0013] Based on the above technical solution, the advantages of the present invention compared with the prior art are as follows:

[0014] 1. This invention proposes a shrub harvester header. After the shrubs are cut down by a high-speed rotating cutting component, they are fed to the harvester's feeding device by a low-speed rotating feeding component. Without adding an additional power input mechanism, the cutting component and the feeding component of the header can rotate coaxially and in the same direction at different speeds, effectively reducing the weight of the header and solving the problems of poor feeding effect and easy blockage caused by the high rotation speed of the feeding component. The planetary gear mechanism operates smoothly and has high transmission efficiency, which can improve the shrub harvesting efficiency and harvesting quality.

[0015] 2. The cutter head in the cutting assembly is designed with a bowl-shaped structure, which has good rigidity. It can reduce the thickness of the cutter head and the weight of the header while ensuring good balance and stability of the cutting assembly under high-speed rotation. This reduces the overall vibration and noise of the header, improves harvesting quality, and reduces the header failure rate. The cutting assembly and the transmission assembly are connected by an elastic sleeve, which allows the cutter to "yield" when it encounters hard objects (such as stones), thereby protecting the cutter from damage, increasing the cutter's service life, and effectively reducing production costs.

[0016] 3. The design incorporates highly flexible contouring wheels and a transverse contouring mechanism, enabling the header to smoothly follow the terrain during harvesting while maintaining stable steering, thus reducing operational difficulties for the driver. The contouring wheels have a long service life, effectively minimizing damage to the ground caused by the header during harvesting. Simultaneously, this invention utilizes a linkage-type auxiliary feeding mechanism to optimize the motion curve of the toothed working part, resulting in a smoother material conveying path and avoiding problems such as easy jamming and large space occupation associated with traditional feeding mechanisms. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram showing the installation of the transmission assembly, the feeding assembly, and the cutting assembly.

[0020] Figure 3 This is a schematic diagram of the framework;

[0021] Figure 4 Schematic diagram of the auxiliary feeding assembly;

[0022] Figure 5 This is a side view of the present invention.

[0023] The labels in the diagram are as follows:

[0024] 1. Frame; 101. Machine frame; 102. Lateral contouring assembly for the cutting table; 1021. Cutting assembly mounting bracket; 1022. Support spring rod; 1023. Lateral contouring connection assembly; 1024. Hydraulic push rod; 103. Contouring wheel; 104. Contouring wheel steering gear; 105. Contouring wheel support frame; 106. Limiting plate; 107. Shock absorber; 2. Transmission assembly; 201. Sun gear shaft; 202. Planetary gears; 203. Internal gear ring; 204. Planetary gear shaft; 205. Upper housing; 206. Lower housing; 207. Planetary carrier; 208. Low-speed transmission sleeve; 3. Cutting assembly; 3 01. Cutter head fixed shaft; 302. Spring; 303. Elastic sleeve support cylinder; 304. Elastic sleeve; 305. Cutter head; 306. Cutting blade; 307. Connecting flange; 308. Expansion sleeve II; 4. Material feeding assembly; 401. Material cylinder cover; 402. Material feeding cylinder; 403. Expansion sleeve I; 404. Support frame; 405. Material feeding plate; 5. Auxiliary feeding assembly; 501. Linkage feeding mechanism; 5011. Active link; 5012. Limiting link; 5013. Passive link; 5014. Feeding rod; 5015. Feeding rod connecting shaft; 502. Feeding roller; 503. Transmission pulley. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] A shrub harvester header includes a frame 1, two transmission assemblies 2, two cutting assemblies 3, two feeding assemblies 4, and an auxiliary feeding assembly 5. The two transmission assemblies 2 are bolted to the frame 1 and are symmetrical about the frame 1 axis. The cutting assemblies 3 are connected to the output end of the sun gear shaft 201 of the transmission assemblies 2 via a shrink sleeve I 403. The inner ring 307 of the feeding assembly 4 is connected to the output end of the low-speed transmission sleeve 208 of the transmission assemblies 2 via a shrink sleeve II 308. Related technologies generally employ a keyed connection structure design. The design cleverly utilizes an expansion sleeve connection structure, resulting in high centering accuracy of the rotating components, convenient installation, adjustment, and disassembly, and a stable and reliable connection. The rotation speed of the feeding assembly 4 is 1 / 6 to 1 / 7 of the rotation speed of the cutting assembly 3. Calculations show that the feeding assembly works best within this speed ratio range. The installation positions of the transmission assembly 2, feeding assembly 4, and cutting assembly 3 are symmetrical about the left and right sides of the frame 1, and the two sets of cutting assemblies 3 have a 35mm overlap in the horizontal direction to ensure that there are no missed cutting areas on the cutting table. The auxiliary feeding assembly 5 is installed behind the cutting table.

[0028] Furthermore, the transmission assembly 2 includes a sun gear shaft 201, planet gears 202, an internal gear ring 203, a planet gear shaft 204, an upper housing 205, a lower housing 206, a planet carrier 207, and a low-speed transmission sleeve 208. The gear portion of the sun gear shaft 201 meshes externally with the three planet gears 202, and the three planet gears 202 mesh internally with the internal gear ring 203. Weight reduction holes are provided on the planet gears 202. The planet gears 202 are fixedly mounted on the planet gear shaft 204, and the planet gear shaft 204 is bolted to the planet carrier 207. The low-speed transmission sleeve 208 is welded to the planet carrier 207, and an angular contact ball bearing is installed between the low-speed transmission sleeve 208 and the sun gear shaft 201 to ensure that the sun gear shaft and the low-speed transmission sleeve rotate coaxially while also withstanding the axial forces generated during operation. Force and radial force; an angular contact ball bearing is installed between the lower housing 206 and the low-speed transmission sleeve 208 to support all rotating parts in the transmission assembly 2, as well as the cutting assembly 3 and the material feeding assembly 4 installed on the transmission assembly 2; skeleton-type sealing rings are installed between the sun gear shaft 201 and the upper housing 205, between the sun gear shaft 201 and the low-speed transmission sleeve 208, and between the low-speed transmission sleeve 208 and the lower housing 206; the power input end of the sun gear shaft 201 can be connected to a hydraulic motor, pulley, sprocket, etc., for power transmission; in related technologies, transmission components generally adopt a multi-stage belt drive or multi-stage gearbox design. This application cleverly uses a planetary gear reduction design, which can greatly save space, reduce the weight of the cutting table, and improve the service life of the gearbox under the premise of a large transmission ratio.

[0029] Furthermore, the cutting assembly 3 includes a cutter head fixing shaft 301, a spring 302, an elastic sleeve support cylinder 303, an elastic sleeve 304, a cutter head 305, cutting blades 306, a connecting flange 307, and a shrink sleeve II 308; the cutter head 305 has a disc-shaped structure and each of its inner and outer rings has a section of annular plane, with a height difference of 120mm between the upper and lower planes, and mounting holes evenly distributed around the axis are provided on both the upper and lower planes; eight cutting blades 306 are fixedly installed on the outer ring plane of the cutter head 305 with thin countersunk hexagonal socket head cap screws, forming a circle with an outer ring diameter of 950mm. The cutter uses countersunk hexagonal socket head cap screws for easy cutter replacement and to prevent the nut from contacting the cutting edge and damaging it. Six elastic sleeve support cylinders 303 are welded into evenly distributed circular holes around the centerline on the inner ring plane of the cutter head 305. Elastic sleeves 304 are installed inside the elastic sleeve support cylinders 303. The outer ring of the connecting flange 307 has six circular holes with a diameter smaller than the inner ring diameter of the elastic sleeves 304. The cutter head fixing shaft 301 passes through the circular holes of the connecting flange 307 and the elastic sleeves 304, with its lower shoulder abutting against the upper surface of the connecting flange 307. The upper shoulder of the cutter head fixing shaft 301 and the elastic sleeve... There is a 2mm gap between the upper surfaces of the support cylinder 303 and the cutter head fixing shaft 301. A spring 302 is installed between the upper shoulder of the cutter head fixing shaft 301 and the upper surface of the cutter head 305. Under normal conditions, the spring 302 is in a compressed state to apply preload to the cutter head 305. The outer ring of the elastic sleeve 304 and the inner ring of the elastic sleeve support cylinder 303, the cutter head fixing shaft 301 and the connecting flange 307, and the cutter head fixing shaft 301 and the inner ring of the elastic sleeve 304 all adopt an overfit to ensure that each component can provide stable support. When the axial force on the cutter 306 is greater than the preload, the elastic sleeve 304... During compression deformation, the cutter 306 undergoes axial deflection, protecting it from damage. In related technologies, the cutter head 305 generally adopts a planar disc structure design and the cutting assembly and transmission assembly are rigidly connected. In this application, the cutter head 305 cleverly uses a three-dimensional structure design, which effectively improves the rotational stability of the cutter head and reduces its weight while ensuring that the strength of the cutter head 305 is not affected. At the same time, this application cleverly uses an elastic sleeve 304 to change the rigid connection of the cutting assembly 3 into a flexible connection, solving the problem of easy damage to the rigidly connected cutter head 306.

[0030] Furthermore, the feeding assembly 4 includes a feeding cylinder cover 401, a feeding cylinder 402, a support frame 404, and feeding plates 405; the feeding cylinder cover 401 is bolted to the top of the feeding cylinder 402; the diameter of the feeding cylinder 402 is 2 / 5 of the outer diameter of the cutter 306; the feeding cylinder 402 is bolted to the outer ring of the support frame 404; the inner ring of the support frame 404 is bolted to the outer ring of the low-speed transmission sleeve 208; four layers of evenly distributed feeding plates 405 are welded on the circumference of the feeding cylinder 402; each layer of feeding plates 405 is staggered and the length of the feeding plates 405 gradually decreases from bottom to top; a 15mm gap is left between the lower surface of the feeding cylinder 402 and the upper surface of the cutter head 305 to avoid collision between the feeding cylinder 402 and the cutter head 305.

[0031] Furthermore, the frame 1 includes a frame 101 welded from square steel pipes and steel plates, a transverse contouring assembly 102 for the cutting table, contouring wheels 103, a contouring wheel steering mechanism 104, a contouring wheel support frame 105, a limiting plate 106, and shock absorbers 107. The shock absorbers 107 are located on both sides of the frame 101 for vertical vibration damping. The steel plates are laid and welded according to the frame structure. The contouring wheels 103 are installed below the contouring wheel steering mechanism 104, which is hinged to the contouring wheel support frame 105. The contouring wheel support frame 105 is symmetrically installed on both sides of the frame 101 using U-bolts for easy installation, disassembly, and maintenance. The contour wheel support frame 105 and the contour wheel steering mechanism 104 are connected by a pin. The contour wheel steering mechanism 104 forms a 20° angle with the vertical direction. The contour wheel 103 can swing up and down around the pin. The ground point of the contour wheel 103 is located in front of the cutter 306. Before the cutter 306 starts working, the height of the cutting table is adjusted to achieve longitudinal contouring of the cutting table and ensure that the height of the shrub stubble is consistent. The limiting plate 106 has an arc groove. The side without the groove is welded to the contour wheel steering mechanism 104, and the other side is connected to the contour wheel support frame 105 by a pin. The limiting plate 106 limits the up and down swing range of the contour wheel 103 and avoids damage to the cutter in an emergency.

[0032] Furthermore, the cutting table transverse contouring assembly 102 includes a cutting assembly mounting bracket 1021, a support spring rod 1022, a transverse contouring connecting assembly 1023, and a hydraulic push rod 1024; one side of the support spring rod 1022 is hinged to the side of the transverse contouring connecting assembly 1023, and the other side is fixedly connected to the longitudinal beam on the side of the frame 101; one side of the hydraulic push rod is hinged to the frame 101, and the other side is hinged to the transverse contouring connecting assembly 1023; two connecting shafts are welded to the front and rear side plates of the cutting assembly mounting bracket 1021, one of which passes through the transverse contouring connecting assembly 1023 and connects to the frame 101, thus connecting the cutting assembly mounting bracket 1021. The frame 1021 and the transverse contouring connection assembly 1023 can rotate relative to the frame 101 around the connecting shaft. Another connecting shaft is fixedly connected to the transverse contouring connection assembly 1023. The two connecting shafts fix the cutting assembly mounting frame 1021 and the transverse contouring connection assembly 1023, which facilitates subsequent maintenance and replacement. Under the push of the hydraulic push rod 1024, the cutting assembly mounting frame 1021 can rotate laterally to achieve transverse contouring of the header cutting assembly 3. This design can ensure that the stubble height of the shrub is consistent, avoid the influence of sand dunes at the roots of shrubs and special terrain on the stubble height and cutting quality, and is conducive to the rejuvenation and regeneration of the cut crops.

[0033] Furthermore, the auxiliary feeding assembly 5 includes a linkage feeding mechanism 501, a feeding roller 502, and two transmission pulleys 503; the linkage feeding mechanism 501 is located below the feeding roller 502, directly behind the cutting assembly 3; a base plate is installed above the linkage feeding mechanism 501, and a toothed through groove is opened on the base plate; the two transmission pulleys 503 are respectively installed on the same side shaft end of the linkage feeding mechanism 501 and the feeding roller 502, and the two transmission pulleys have the same diameter; the linkage feeding mechanism 501 includes an active connecting rod 5011, a limiting connecting rod 5012, a passive connecting rod 5013, a shift rod 5014, and a shift rod connecting shaft 5015; the active... One side of the connecting rod 5011 is fixedly connected to the drive shaft, and the other side is hinged to the middle hole of the passive connecting rod 5013; one side of the limiting connecting rod 5012 is hinged to the side plate of the frame, and the other side is hinged to the lower hole of the passive connecting rod 5013; two lever connecting shafts 5015 are respectively connected to the middle hole and the upper hole of the passive connecting rod 5013; levers 5014 are evenly installed on lever connecting shafts 5015, and the length of the lever in the middle position of the cutting table is greater than that on both sides; the present invention utilizes the connecting rod structure to optimize the motion curve of the auxiliary feeding teeth, making the material conveying path smoother and avoiding the problems of easy jamming and large space occupation of traditional feeding mechanisms.

[0034] The working principle of the shrub harvester's header is as follows: the external power source is connected to the upper end of the sun gear shaft of the transmission assembly, transmitting power to the sun gear shaft and planetary gears. The lower end of the sun gear shaft is flexibly connected to the cutting assembly, transmitting power to the cutter blades for high-speed cutting. The planetary gears revolve around the sun gear shaft and the internal gear ring, driving the planetary carrier and the low-speed transmission sleeve to rotate at low speed. The low-speed transmission sleeve is connected to the inner ring of the support frame of the material feeding assembly through a shrink sleeve, transmitting power to the material feeding assembly for low-speed material feeding. The cutting assembly and the material feeding assembly are concentric. The differential rotation design ensures smooth operation of the header, which is relatively lightweight. During operation, the high-speed rotating cutter first cuts down the shrubs, and the low-speed rotating material feeding assembly moves the shrubs to the rear of the header. Subsequently, the auxiliary feeding mechanism located at the rear of the header feeds the material to the subsequent conveying mechanism. When the header encounters uneven ground, the contour wheel and the lateral contouring mechanism adjust the cutting angle of the cutting assembly in both the lateral and longitudinal directions to ensure that the shrub stubble height is consistent. At the same time, the contour wheel can swing left and right within a certain angle range to meet the turning requirements of the header.

[0035] It should be noted that in this application, terms such as "upper" and "lower" indicate directions or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These are used solely for the convenience of describing this application and for simplification, and do not imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A cutting platform for a shrub harvester, characterized in that: The assembly includes a frame (1), two sets of transmission assemblies (2), two sets of cutting assemblies (3), two sets of feeding assemblies (4), and an auxiliary feeding assembly (5). The two sets of transmission assemblies (2) are bolted to the frame (1) and are symmetrical with respect to the axis of the frame (1). The cutting assembly (3) is connected to the output end of the sun gear shaft (201) of the transmission assembly (2) through the expansion sleeve I (403). The feeding assembly (4) is connected to the inner ring of the flange (307) and is connected to the output end of the low-speed transmission sleeve (208) of the transmission assembly (2) through the expansion sleeve II (308). The rotation speed of the feeding assembly (4) is 1 / 6 to 1 / 7 of the rotation speed of the cutting assembly (3). The installation positions of the two sets of transmission assemblies (2), the two sets of feeding assemblies (4), and the two sets of cutting assemblies (3) are all symmetrical with respect to the frame (1) from left to right. The two sets of cutting assemblies (3) have a 35mm overlap in the horizontal direction.The auxiliary feeding assembly (5) is installed behind the cutting table; the frame (1) includes a frame (101) welded from square steel pipes and steel plates, a cutting table transverse contouring assembly (102), a contouring wheel (103), a contouring wheel steering mechanism (104), a contouring wheel support frame (105), a limiting plate (106), and a shock absorber (107); the contouring wheel (103) is installed below the contouring wheel steering mechanism (104), the contouring wheel steering mechanism (104) is hinged to the contouring wheel support frame (105), and the contouring wheel support frame (105) is symmetrically installed on both sides of the frame (101) with U-bolts; the contouring wheel support frame (105) is installed on both sides of the frame (101) with U-bolts; the contouring wheel support frame (105) is installed on both sides of the cutting table (101). The support frame (105) and the contour wheel steering mechanism (104) are connected by a pin. The contour wheel steering mechanism (104) forms a 20° angle with the vertical direction. The grounding point of the contour wheel (103) is located in front of the cutter (306). The limiting plate (106) has an arc groove. The side without the groove is welded to the contour wheel steering mechanism (104), and the other side is connected to the contour wheel support frame (105) by a pin. The shock absorbers (107) are set on both sides of the frame (101) for longitudinal shock absorption. The transverse contour assembly (102) of the cutting table includes a cutting assembly mounting frame (1021) and a support spring rod (103). 022), transverse contouring connection assembly (1023) and hydraulic push rod (1024); one side of the support spring rod (1022) is hinged to the side of the transverse contouring connection assembly (1023), and the other side is fixedly connected to the longitudinal beam on the side of the frame (101); one side of the hydraulic push rod (1024) is hinged to the frame (101), and the other side is hinged to the transverse contouring connection assembly (1023); two connecting shafts are welded to the front and rear side plates of the cutting assembly mounting bracket (1021). One connecting shaft passes through the transverse contouring connecting assembly (1023) and is connected to the frame (101). The cutting assembly mounting bracket (1021) and the transverse contouring connecting assembly (1023) can rotate relative to the frame (101) around this connecting shaft. The other connecting shaft is fixedly connected only to the transverse contouring connecting assembly (1023). The two connecting shafts fix the cutting assembly mounting bracket (1021) and the transverse contouring connecting assembly (1023) together, facilitating subsequent maintenance and replacement.

2. The shrub harvester header according to claim 1, characterized in that: The auxiliary feeding assembly (5) includes a linkage feeding mechanism (501), a feeding roller (502), and two transmission pulleys (503); the linkage feeding mechanism (501) is located below the feeding roller (502) and directly behind the cutting assembly (3); a base plate is installed above the linkage feeding mechanism (501), and a toothed through groove is opened on the base plate; the two transmission pulleys (503) are respectively installed on the same side shaft end of the linkage feeding mechanism (501) and the feeding roller (502), and the two transmission pulleys have the same diameter; the linkage feeding mechanism (501) includes an active connecting rod (5011) and a limiting connecting rod (5012). Passive connecting rod (5013), lever (5014), and lever connecting shaft (5015); the active connecting rod (5011) has a connecting hole on one side fixedly connected to the drive shaft, and a connecting hole on the other side hinged to the middle hole of the passive connecting rod (5013); the limiting connecting rod (5012) has a connecting hole on one side hinged to the side plate of the frame, and a connecting hole on the other side hinged to the lower hole of the passive connecting rod (5013); the two lever connecting shafts (5015) are respectively connected to the middle hole and the upper hole of the passive connecting rod (5013); the lever (5014) is evenly installed on the lever connecting shaft (5015), and the length of the lever at the middle position of the cutting table is greater than that on both sides.

3. The shrub harvester header according to claim 2, characterized in that: The transmission assembly (2) includes a sun gear shaft (201), planet gears (202), an internal gear ring (203), a planet gear shaft (204), an upper housing (205), a lower housing (206), a planet carrier (207), and a low-speed transmission sleeve (208); the gear portion of the sun gear shaft (201) meshes externally with three planet gears (202), and the three planet gears (202) mesh internally with the internal gear ring (203); the planet gears (202) have weight reduction holes; the planet gears (202) are fixedly mounted on the planet gear shaft (204), and the planet gear shaft (204) is fixedly connected to the planet carrier (207) with bolts; the low-speed transmission sleeve ( 208) is welded and fixed to the planetary carrier (207). An angular contact ball bearing is installed between the low-speed transmission sleeve (208) and the sun gear shaft (201), with the opening of the angular contact ball bearing facing upward. An angular contact ball bearing is installed between the lower housing (206) and the low-speed transmission sleeve (208), with the opening of the angular contact ball bearing facing upward. Skeleton-type sealing rings are installed between the sun gear shaft (201) and the upper housing (205), between the sun gear shaft (201) and the low-speed transmission sleeve (208), and between the low-speed transmission sleeve (208) and the lower housing (206). The power input end of the sun gear shaft (201) is connected to the hydraulic motor, pulley, and sprocket device for power transmission.

4. The shrub harvester header according to claim 2, characterized in that: The cutting assembly (3) includes a cutter head fixing shaft (301), a spring (302), an elastic sleeve support cylinder (303), an elastic sleeve (304), a cutter head (305), a cutting blade (306), and a connecting flange (307); the cutter head (305) has a disc-shaped structure and each of the inner and outer rings of the cutter head (305) has a section of annular plane, the height difference between the upper and lower planes is 120mm, and the upper and lower planes are provided with mounting holes evenly distributed around the axis; eight cutting blades (306) are fixedly installed on the outer ring plane of the cutter head (305) with thin countersunk hexagonal socket head cap screws to form a circular cutting blade with an outer ring diameter of 950mm; all six elastic sleeve support cylinders (303) are welded The inner ring of the cutter head (305) is evenly distributed with circular holes around the center line; the elastic sleeve (304) is installed in the elastic sleeve support cylinder (303); the outer ring of the connecting flange (307) is provided with six circular holes with a diameter smaller than the inner ring diameter of the elastic sleeve (304); the cutter head fixing shaft (301) passes through the circular hole of the connecting flange (307) and the elastic sleeve (304), and the lower end shoulder abuts against the upper surface of the connecting flange (307); there is a 2mm gap between the upper shoulder of the cutter head fixing shaft (301) and the upper surface of the elastic sleeve support cylinder (303), and a spring (302) is installed between the upper shoulder of the cutter head fixing shaft (301) and the upper surface of the cutter head (305).

5. The shrub harvester header according to claim 2, characterized in that: The feeding assembly (4) includes a feeding cylinder cover (401), a feeding cylinder (402), an expansion sleeve I (403), a support frame (404), and a feeding plate (405); the feeding cylinder cover (401) is bolted to the top of the feeding cylinder (402); the diameter of the feeding cylinder (402) is 2 / 5 of the outer diameter of the cutter (306), and the feeding cylinder (402) is bolted to the outer ring of the support frame (404). Next, the inner ring of the support frame (404) is fixedly connected to the outer ring of the low-speed transmission sleeve (208) by the expansion sleeve I (403). Four layers of evenly distributed material-pushing plates (405) are welded on the circumference of the material-pushing cylinder (402). Each layer of material-pushing plates (405) is staggered and the length of the material-pushing plates (405) gradually decreases from bottom to top. A gap of 15mm is left between the lower surface of the material-pushing cylinder (402) and the upper surface of the cutter head (305).

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