An adjustable stalk chopping cutterhead assembly for a corn seed and stalk harvester

Abstract

The utility model discloses an adjustable stalk chopping cutter head assembly of corn seed stalk combined harvester, including the cutter head base body that is rotated by host drive around the central axis, a plurality of dynamic cutter units are arranged on the cutter head base body along the circumference, and every dynamic cutter unit all includes connecting block, cutter arm and dynamic blade, one end of cutter arm is established on connecting block through first hinged member, the cutter head base body still is equipped with angle adjusting mechanism, angle adjusting mechanism and the cutter arm linkage connection of all dynamic cutter units are used for driving all cutter arms around the central synchronous rotation of first hinged member, the utility model discloses through setting the dynamic cutter unit that can be relative to the horizontal plane cutting oblique, and setting angle adjusting mechanism between dynamic cutter unit and sleeve, make dynamic cutter unit be in horizontal state, can cut stalk with the mode of flat cutting, also can make dynamic cutter unit with certain cutting angle of oblique cutting, and cutting process is more labor saving, is suitable for processing thick, tenacious good stalk, and the power consumption is lower.

Description

Technical Field

[0001] This utility model belongs to the technical field of corn seed and stalk harvester, and particularly relates to an adjustable stalk chopping blade assembly for a corn seed and stalk harvester. Background Technology

[0002] Current corn seed and stalk harvesters include functions such as stalk cutting, ear picking, and peeling. Among them, the header assembly used for ear picking is one of its core components, responsible for picking corn ears. During the ear picking process, the reeling chain concentrates the corn plants towards the center and moves the ears and stalks downward. When the ears come into contact with the ear picking roller, the stalks and ears are separated by the rotation and friction of the ear picking roller. The stalks continue to move downward, causing the chopping disc located below the ear picking roller to cut and crush them.

[0003] Most existing stem chopping disc assemblies use fixed-angle moving blades mounted on a rotating disc. Fixed-angle blades can only achieve a single chopping effect at a specific rotation speed. When crop conditions change, such as encountering thick and tough stems that require greater cutting force, the fixed-angle disc cannot adapt to these different cutting requirements, easily leading to problems such as uneven chopping length, clogging, and increased power consumption. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an adjustable stalk chopping disc assembly for a corn seed and stalk harvester, so as to solve the technical problems mentioned in the background art.

[0005] This utility model provides the following technical solution: An adjustable stalk chopping blade assembly for a corn seed and stalk harvester includes a blade base driven by a main unit to rotate around a central axis. Several moving blade units are circumferentially arranged on the blade base. Each moving blade unit includes a connecting block, a blade arm, and a moving blade. The connecting block is disposed within a radial groove on the blade base via a connecting structure. One end of the blade arm is connected to the connecting block via a first hinge. The moving blade is disposed on the side of the blade arm facing the cutting direction. An angle adjustment mechanism is also provided on the blade base. This mechanism is linked to the blade arms of all the moving blade units and drives all the blade arms to rotate synchronously around the center of the first hinge, thereby changing the cutting angle of all the moving blades relative to the horizontal plane.

[0006] Preferably, the main unit is a cutting table assembly, which includes a transmission gearbox. The output end of the transmission gearbox is vertically downward and located on the power drive shaft. The lower end face of the transmission gearbox is also provided with a sleeve coaxially arranged with the power drive shaft.

[0007] Preferably, the angle adjustment mechanism includes a synchronous adjustment ring that can be axially moved and sleeved on the sleeve, and an adjustment link is hinged to the upper end face of each of the cutter arms, with the other end of all the adjustment links being hinged to the synchronous adjustment ring; the angle adjustment mechanism also includes a driving member for driving the synchronous adjustment ring to move axially.

[0008] Preferably, the angle adjustment mechanism further includes a plurality of vertical limiting grooves disposed on the inner side of the synchronous adjustment ring and a plurality of vertical limiting strips disposed on the outer side of the sleeve, each of which is adapted to the vertical limiting groove.

[0009] Preferably, the driving component is a telescopic cylinder, which is vertically downward, with the cylinder body connected to the side of the sleeve, and the movable end of the telescopic cylinder hinged to the synchronous adjusting ring.

[0010] Preferably, the telescopic cylinder is either an electric cylinder or a hydraulic cylinder.

[0011] Preferably, there are several telescopic cylinders, which are distributed at equal intervals around the axial direction of the synchronous adjustment ring, and the several telescopic cylinders work synchronously.

[0012] Preferably, the connection structure includes a plurality of through holes extending through the upper and lower end faces of the connecting block, a plurality of bolt holes located at the bottom of the radial groove, and a plurality of fastening bolts adapted to the bolt holes for locking the connecting block in the radial groove.

[0013] Preferably, the first hinge includes a first U-shaped seat disposed on the upper end face of the connecting block, a first bearing is disposed inside the first U-shaped seat, the inner ring of the first bearing is connected to the two end plates of the first U-shaped seat through a connecting rod, and the outer ring of the first bearing is connected to the end of the blade arm.

[0014] Preferably, the first bearing is a slewing bearing.

[0015] Preferably, the axial direction of the first bearing is perpendicular to the length direction of the cutter arm, and the length direction of the cutter arm is perpendicular to the axial direction of the cutter head base.

[0016] Preferably, the upper middle part of the cutter head base is coaxially connected to the power drive shaft through a second connecting structure; the second connecting structure includes a flange coaxially disposed at the lower end of the power drive shaft, and a plurality of second through holes extending vertically along the circumference of the flange. The upper end face of the cutter head base is provided with a plurality of second bolt holes corresponding one-to-one with the second through holes, and each second through hole is provided with a second fastening bolt adapted to the second bolt hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses an adjustable stalk chopping blade assembly for a corn seed and stalk harvester. By setting a moving blade unit that can cut at an angle relative to the horizontal plane, and setting an angle adjustment mechanism between the moving blade unit and the sleeve, the moving blade unit can cut the stalk in a flat cutting manner when it is in a horizontal state, and can also cut at an angle at a certain angle. The cutting process is more labor-saving, suitable for processing thick and tough stalks, and has lower power consumption. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the cutting platform assembly of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the connection structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the vertical limiting groove distribution of this utility model.

[0023] In the diagram: 1. Cutter head base; 2. Moving cutter unit; 3. Connecting block; 4. Cutter arm; 5. Moving blade; 6. Connecting structure; 63. Fastening bolt; 7. Radial groove; 8. First hinge; 81. First U-shaped seat; 82. First bearing; 9. Angle adjustment mechanism; 91. Synchronous adjustment ring; 92. Adjustment rod; 94. Vertical limiting groove; 95. Vertical limiting strip; 10. Sleeve; 11. Cutting table assembly; 12. Gearbox; 13. Power drive shaft. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] This utility model provides an adjustable stalk chopping blade assembly for a corn seed and stalk harvester, see reference. Figure 1-4 As shown, the device includes a cutter head base 1 driven by a host to rotate around a central axis. Several moving blade units 2 are circumferentially arranged on the cutter head base 1. Each moving blade unit 2 includes a connecting block 3, a blade arm 4, and a moving blade 5. The connecting block 3 is disposed within a radial groove 7 on the cutter head base 1 via a connecting structure. One end of the blade arm 4 is connected to the connecting block 3 via a first hinge 8. The moving blade 5 is disposed on the side of the blade arm 4 facing the cutting direction. An angle adjustment mechanism 9 is also provided on the cutter head base 1. The angle adjustment mechanism 9 is linked to the blade arms 4 of all the moving blade units 2, and is used to drive all the blade arms 4 to rotate synchronously around the center of the first hinge 8, thereby changing the cutting angle of all the moving blades 5 relative to the horizontal plane. The angle adjustment mechanism 9 allows adjustment of the cutting angle of all the moving blades 5, enabling the selection of appropriate cutting methods according to different stem conditions, thus improving chopping quality and work efficiency.

[0027] The main unit is a cutting table assembly 11, which includes a transmission gearbox 12. The output end of the transmission gearbox 12 is vertically downward and is located on the power drive shaft 13. The lower end face of the transmission gearbox 12 is also provided with a sleeve 10 coaxially arranged with the power drive shaft 13.

[0028] The angle adjustment mechanism 9 includes a synchronous adjustment ring 91 that is axially movable and sleeved on the sleeve 10. Each cutter arm 4 has an adjustment connecting rod 92 hinged to its upper end face, and the other end of all the adjustment connecting rods 92 is hinged to the synchronous adjustment ring 91. The angle adjustment mechanism 9 also includes a driving component for driving the synchronous adjustment ring 91 to move axially. The linkage structure of the synchronous adjustment ring 91 and the adjustment connecting rod 92 enables synchronous rotation of all cutter arms 4, ensuring the consistency of the moving blade 5 angle and accurate adjustment.

[0029] The angle adjustment mechanism 9 also includes a plurality of vertical limiting grooves 94 disposed on the inner side of the synchronous adjustment ring 91 and a plurality of vertical limiting strips 95 disposed on the outer side of the sleeve 11, each corresponding to one of the vertical limiting grooves 94. The cooperation of the vertical limiting grooves 94 and the vertical limiting strips 95 can prevent the circumferential rotation of the synchronous adjustment ring 91.

[0030] The driving component is a telescopic cylinder, which is arranged vertically downwards. The cylinder body of the telescopic cylinder is connected to the side of the sleeve 10, and the movable end of the telescopic cylinder is hinged to the synchronous adjustment ring 91. The telescopic cylinder is either an electric cylinder or a hydraulic cylinder. Several telescopic cylinders are provided, and the several telescopic cylinders are distributed at equal intervals around the axial direction of the synchronous adjustment ring 91, and the several telescopic cylinders work synchronously.

[0031] The connection structure includes several through holes on the upper and lower end faces of the connecting block 3, several bolt holes at the bottom of the radial groove 7, and several fastening bolts 63 that are adapted to the bolt holes to lock the connecting block 3 in the radial groove 7.

[0032] The first hinge member 8 includes a first U-shaped seat 81 disposed on the upper end face of the connecting block 3. A first bearing 82 is disposed inside the first U-shaped seat 81. The inner ring of the first bearing 82 is connected to the two end plates of the first U-shaped seat 81 through a connecting rod, and the outer ring of the first bearing 82 is connected to the end of the cutter arm 4. The first bearing 82 is a slewing bearing. Using a slewing bearing as the first hinge member ensures the stability and load-bearing capacity of the cutter arm 4 during rotation.

[0033] The axial direction of the first bearing is perpendicular to the length direction of the cutter arm 4, and the length direction of the cutter arm 4 is perpendicular to the axial direction of the cutter disc base 1.

[0034] The upper middle part of the cutter head base 1 is coaxially connected to the power drive shaft 13 through a second connecting structure; the second connecting structure includes a flange coaxially disposed at the lower end of the power drive shaft 13, and a plurality of second through holes extending vertically along its circumference on the flange. The upper end face of the cutter head base 1 is provided with a plurality of second bolt holes corresponding one-to-one with the second through holes, and each second through hole is provided with a second fastening bolt adapted to the second bolt hole.

[0035] When the cutting angle needs to be adjusted, the synchronous adjustment ring 91 moves up or down by the synchronous extension and retraction of the telescopic cylinder. The adjusting rod 92 drives all the blade arms 4 to rotate synchronously around the first hinge 8, thereby achieving a unified adjustment of the cutting angle of all moving blades 5. This design ensures that a good chopping effect can be obtained under various operating conditions.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable stalk chopping blade assembly for a corn seed and stalk harvester, comprising a blade base (1) driven by a main unit to rotate around a central axis, wherein a plurality of moving blade units (2) are arranged circumferentially on the blade base (1), characterized in that: Each of the moving blade units (2) includes a connecting block (3), a blade arm (4), and a moving blade (5); the connecting block (3) is disposed in a radial groove (7) provided on the cutter head base (1) through a connecting structure (6); one end of the blade arm (4) is disposed on the connecting block (3) through a first hinge (8), and the moving blade (5) is disposed on the side of the blade arm (4) facing the cutting direction; the cutter head base (1) is also provided with an angle adjustment mechanism (9), which is linked to the blade arms (4) of all the moving blade units (2) and is used to drive all the blade arms (4) to rotate synchronously around the center of the first hinge (8) to change the cutting angle of all the moving blades (5) relative to the horizontal plane.

2. The adjustable stalk chopping disc assembly of a corn seed and stalk harvester according to claim 1, characterized in that, The angle adjustment mechanism (9) includes a synchronous adjustment ring (91) that can be axially moved and sleeved on the sleeve (10). Each of the blade arms (4) has an adjustment link (92) hinged to its upper end face. The other end of all the adjustment links (92) is hinged to the synchronous adjustment ring (91). The angle adjustment mechanism (9) also includes a driving member for driving the synchronous adjustment ring (91) to move along its axial direction.

3. The adjustable stalk chopping disc assembly of a corn seed and stalk harvester according to claim 2, characterized in that, The driving component is a telescopic cylinder, which is set vertically downward. The cylinder body of the telescopic cylinder is connected to the side of the sleeve (10), and the movable end of the telescopic cylinder is hinged to the synchronous adjustment ring (91).

4. The adjustable stalk chopping blade assembly of a corn seed and stalk harvester according to claim 3, characterized in that, The telescopic cylinder is provided in a plurality of manners, and the plurality of telescopic cylinders are distributed sequentially at equal intervals around the axial direction of the synchronous adjustment ring (91), and the plurality of telescopic cylinders work synchronously.

5. The adjustable stalk chopping disc assembly of a corn seed and stalk harvester according to claim 1, characterized in that, The connection structure includes several through holes on the upper and lower end faces of the connecting block (3), several bolt holes at the bottom of the radial groove (7), and several fastening bolts (63) that are adapted to the bolt holes to lock the connecting block (3) in the radial groove (7).

6. The adjustable stalk chopping disc assembly of a corn seed and stalk harvester according to claim 1, characterized in that, The first hinge (8) includes a first U-shaped seat (81) disposed on the upper end face of the connecting block (3), a first bearing (82) is provided in the first U-shaped seat (81), the inner ring of the first bearing (82) is connected to the two end plates of the first U-shaped seat (81) through a connecting rod, and the outer ring of the first bearing (82) is connected to the end of the knife arm (4).

7. The adjustable stalk chopping disc assembly of a corn seed and stalk harvester according to claim 1, characterized in that, The upper middle part of the cutter head base (1) is coaxially connected to the power drive shaft (13) through a second connecting structure; the second connecting structure includes a flange coaxially disposed at the lower end of the power drive shaft (13), and the flange is provided with a number of second through holes running vertically along its circumference. The upper end face of the cutter head base (1) is provided with a number of second bolt holes corresponding to the second through holes, and each second through hole is provided with a second fastening bolt adapted to the second bolt hole.

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