A straw picking machine knife shaft
By designing two sets of slings that are alternately dislocated in the axial direction and arranged at intervals in the circumferential direction on the knife shaft of the straw picker, the problems of complex structure, large resistance and poor picking effect in the prior art are solved, and a more efficient and stable straw picking effect is achieved.
Patent Information
- Application Number
- CN202421572734.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The existing straw picking machine has a complex knife shaft structure and the knife swinging setting is too concentrated, resulting in large resistance, poor stability and poor picking effect.
A straw picking machine knife shaft is designed, and two sets of swing knives are arranged alternately along the axial direction of the shaft roller, and arranged at intervals in the circumferential direction. The two sets of swing knives are arranged dispersed in the circumferential direction, and the number of swing knives in each group is odd, the axial distance of the adjacent swing knives is equal, and the circumferential directions of the middle swing knives and the two ends are staggered.
The tool shaft structure is simplified, the resistance is reduced, the pickup effect and stability is improved, the failure rate is reduced, and the long-term and stable operation of the machine is ensured.
Smart Images
Figure CN222736705U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of straw pickers, in particular to a knife shaft of a straw picker. Background Art
[0002] The straw picker is a modern agricultural machinery used to collect straw. It is of great significance to improve the efficiency of straw collection, reduce resource waste and environmental pollution.
[0003] The main picking component of the existing picker is the knife shaft, among which the knife shaft often has a relatively complex structure with multiple groups of fling knives. At the same time, each group of fling knives is relatively concentrated. When the fling knives are used to pick up straw, too many fling knives are used to pick up straw at the same time or in a short period of time. This can easily lead to greater resistance on the knife shaft and affect its long-term stable operation. At the same time, due to the poor dispersion of the fling knives, the picking effect is also easily affected. Utility Model Content
[0004] The purpose of the utility model is to provide a straw picking machine knife shaft, which solves the above-mentioned technical problems.
[0005] Utility model solution:
[0006] The utility model provides a straw picking machine knife shaft, comprising a shaft roller and two groups of fling knives arranged on the outer peripheral wall of the shaft roller; the fling knives in each group are arranged at intervals in the axial direction, and are symmetrically arranged about a virtual radial plane perpendicular to the shaft roller, and the fling knives located on both sides of the radial plane are respectively distributed in a spiral shape; the two groups of fling knives are staggered in the circumferential direction, and the fling knives in one group are arranged 180 degrees in the circumferential direction with the corresponding fling knives in the other group, and the corresponding fling knives in the two groups are staggered by a certain position along the axial direction and are arranged adjacent to each other.
[0007] Furthermore, the number of the swinging knives in each group is odd.
[0008] Furthermore, the axial distance between two adjacent fling knives in each group is equal.
[0009] Furthermore, the swinging knives in the middle of each group are arranged at a certain position staggered in the circumferential direction from the swinging knives at both ends.
[0010] Furthermore, the two groups of adjacent fling knives are arranged to partially overlap in the axial direction.
[0011] Furthermore, the outer end of the fling knife is provided with a bending portion for picking up straw.
[0012] Furthermore, both sides of the bending portion are convex.
[0013] Furthermore, a plurality of picking claws are protruding from the outer end of the bending portion.
[0014] Furthermore, the shaft roller is provided with a knife seat, and the swing knife is installed on the knife seat through a pin shaft.
[0015] Furthermore, a limiting groove is provided on the outer side of the knife seat, and the end of the pin shaft is accommodated and limited in the limiting groove.
[0016] Beneficial effects:
[0017] The utility model provides a straw picking machine cutter shaft, wherein two groups of fling knives are adopted and are alternately staggered along the axial direction of the shaft roller and are arranged in a staggered manner at intervals along the circumferential direction. Compared with the existing structure, the structure is relatively simple, and the two groups of fling knives are sufficiently spirally dispersed, which can ensure the picking effect and avoid straw leakage. At the same time, when the picker is working, a middle fling knife on the radial surface or two symmetrical fling knives on both sides thereof are used to pick up the straw. Compared with the existing technology, the resistance on the cutter shaft can be greatly reduced. At the same time, the picking and flinging knives are symmetrically arranged, which is conducive to uniform and stable load on the cutter shaft, thereby reducing the failure rate of the cutter shaft and ensuring the long-term stable operation of the machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the structure of the blade shaft of the straw picker provided in this embodiment;
[0020] Figure 2 This is a front view of the straw picker provided in this embodiment when the blade shaft is rotated to a certain angle, wherein the blades in the solid circle are one group of blades, and the spiral solid line is a virtual spiral distribution connecting line;
[0021] Figure 3 This is a front view of the straw picker provided in this embodiment with the blade shaft rotated to another angle; wherein the fling blades in the virtual circle are another set of fling blades, and the spiral dotted line is a virtual spiral distribution connecting line;
[0022] Figure 4 A left view of the blade shaft of the straw picker provided in this embodiment.
[0023] icon:
[0024] 100-shaft roller;
[0025] 200-fling knife; 210-bending part; 211-picking claw;
[0026] 300- radial surface;
[0027] 400-knife holder; 410-limiting groove;
[0028] 500-pin. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0030] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.
[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0033] This embodiment provides a straw picking machine blade shaft, please refer to Figure 1-4As shown, it includes a shaft roller 100 and two groups of swing knives 200 arranged on the outer peripheral wall of the shaft roller 100; the swing knives 200 in each group are arranged at intervals in the axial direction, and are symmetrically arranged about a virtual radial surface 300 perpendicular to the shaft roller 100, and the swing knives 200 located on both sides of the radial surface 300 are respectively distributed in a spiral shape; the two groups of swing knives 200 are staggered in the circumferential direction, and the swing knives 200 in one group are arranged 180 degrees in the circumferential direction with the corresponding swing knives 200 in the other group, and the corresponding swing knives 200 in the two groups are staggered by a certain position along the axial direction and are arranged adjacent to each other.
[0034] Specifically, the knives 200 in each group are arranged at intervals in the axial direction, and the corresponding adjacent knives 200 between the groups are staggered in the axial direction by a certain position and arranged adjacently, that is, the two groups of knives 200 are staggered in the axial direction in sequence, and the knives 200 in the group are spirally symmetrically arranged relative to the radial surface 300 in the circumferential direction, and the corresponding adjacent knives 200 between the groups are arranged at 180 degrees, and the two groups of knives 200 are staggered and dispersed in the circumferential direction; wherein, the corresponding adjacent knives 200 in the two groups refer to a knives 200 in one group and an adjacent knives 200 in the other group in the axial staggered direction. Another swing knife, that is, the corresponding swing knife 200 is further defined as the adjacent swing knife 200 in the axial dislocation direction, rather than the swing knives 200 adjacent to one swing knife 200 in both axial directions being the corresponding swing knives 200; wherein, the two groups of the swing knives 200 are arranged in a circumferential dislocation, which should be understood as a completely staggered arrangement with a margin; in addition, they are arranged at a certain axial staggered position, which can be a complete staggered arrangement with a slight margin, or a just staggered arrangement, or the adjacent side portions of the two corresponding adjacent swing knives 200 in the two groups slightly overlap in the axial direction, such as Figure 2-3 As shown, at this time, two adjacent picking claws 211 partially overlap; in addition, combined with Figure 1-4 As shown, the a-position and f-position (i.e., 1-position and 6-position) swing knives 200 in one group of swing knives 200 are located within the circumferential angle range between the C-position and D-position (i.e., 3-position and 4-position) swing knives 200 in another group of swing knives 200, that is, between the C-position and D-position swing knives 200 (circumferentially spaced two swing knives 200, by Figure 4 It can be seen that there are a total of 12 circumferential blades, that is, 30 degrees between two adjacent blades, which are set at a circumferential angle of 90 degrees; at the same time, the remaining adjacent blades 200 in each group (circumferentially spaced 1 blade 200) are set at a circumferential angle of 60 degrees; at this time, the angle of the D-position blade 200 relative to the A-position 0 degree is 210 degrees, which can be offset with the 180-degree setting of the a-position; wherein, the spiral angle on one side of the radial surface 300 is in the range of 0-330 degrees for the a-positions, and the angles of the a- and f-position blades 200 differ by 30 degrees; in addition, on the basis of satisfying the above-mentioned offset setting, the angle setting of each blade 200 can be flexibly adjusted.
[0035] In this embodiment, the number of the swinging knives 200 in each group is odd.
[0036] Specifically, when the number of the swinging blades 200 is odd, it is convenient to determine the position of the middle swinging blade 200, which serves as the end position of the spiral within the group, and it is convenient to set the end spiral position and the starting positions on both sides in a circumferentially offset comparison.
[0037] In this embodiment, the axial distance between two adjacent fling knives 200 in each group is equal.
[0038] Specifically, the lateral distances between adjacent swing knives 200 are equal, the load on the swing knives 200 is evenly distributed during the picking operation, and the knife shaft runs more smoothly.
[0039] In this embodiment, the swinging knives 200 in the middle position of each group are arranged at a certain position staggered in the circumferential direction from the swinging knives 200 at both ends.
[0040] Specifically, the middle blade 200 and the blades 200 at both ends are staggered in the circumferential direction. Compared with the circumferential overlapping arrangement, this simplifies the redundant structure and load resistance that may be caused by the overlapping, and at the same time increases the circumferential dispersion of the blades 200, which is beneficial to improving the picking effect.
[0041] In this embodiment, the two adjacent groups of fling knives 200 are arranged to partially overlap in the axial direction.
[0042] Specifically, the adjacent blades 200 between groups include one blade in one group and two blades 200 in another group adjacent to the one blade on both sides. The overlap means that two adjacent side portions of one blade 200 and two adjacent blades 200 overlap, that is, two adjacent picking claws 211 shown in the figure partially overlap, which can enhance the picking effect and avoid missing.
[0043] In this embodiment, the outer end of the flail blade 200 is provided with a bending portion 210 for picking up straw.
[0044] Specifically, the outer end of the fling knife 200 adopts a structure of a bending portion 210, which is convenient for picking up the straw, thereby avoiding material falling off and improving the picking effect; in addition, the bending portion 210 can be an inclined surface or a curved surface formed by bending.
[0045] In this embodiment, both sides of the bending portion 210 are convex.
[0046] Specifically, the two sides of the bending portion 210 are convexly arranged to increase the picking area and, at the same time, facilitate the overlapping arrangement of adjacent side portions of adjacent swing knives 200 between two groups.
[0047] In this embodiment, a plurality of picking claws 211 are protruding from the outer end of the bending portion 210 .
[0048] Specifically, a plurality of picking claws 211 are protruding from the outer end of the bending portion 210 to facilitate raking and picking up the straw, thereby avoiding material falling off and improving the picking effect.
[0049] In this embodiment, the shaft roller 100 is provided with a knife seat 400, and the swing knife 200 is installed on the knife seat 400 through a pin 500. A limiting groove 410 is provided on the outer side of the knife seat 400, and the end of the pin 500 is accommodated and limited in the limiting groove 410.
[0050] Specifically, in Figure 4 The left view shows a square limiting structure at the left end of the pin 500 , which is limited in the limiting groove 410 .
[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A straw picker blade shaft, characterized in that: It comprises an axial roller (100) and two groups of flinging knives (200) arranged on the outer peripheral wall of the axial roller (100); The fling knives (200) in each group are arranged at intervals in the axial direction and are symmetrically arranged about a virtual radial surface (300) perpendicular to the shaft roller (100), and the fling knives (200) located on both sides of the radial surface (300) are respectively distributed in a spiral shape; The two groups of fling knives (200) are staggered in the circumferential direction, and the fling knives (200) in one group are arranged 180 degrees from the corresponding fling knives (200) in the other group in the circumferential direction, and the corresponding fling knives (200) in the two groups are staggered by a certain position in the axial direction and are arranged adjacent to each other.
2. The blade shaft of a straw picker according to claim 1, characterized in that: The number of the fling knives (200) in each group is odd.
3. The blade shaft of a straw picker according to claim 1, characterized in that: The axial distance between two adjacent fling knives (200) in each group is equal.
4. The blade shaft of a straw picker according to claim 1, characterized in that: The swing knives (200) at the middle position of each group are arranged at a certain position staggered from the swing knives (200) at the two ends in the circumferential direction.
5. The blade shaft of a straw picker according to claim 1, characterized in that: The two adjacent groups of fling knives (200) are arranged to partially overlap in the axial direction.
6. A straw picker blade shaft according to any one of claims 1 to 5, characterized in that: The outer end of the flail blade (200) is provided with a bending portion (210) for picking up straw.
7. The blade shaft of a straw picker according to claim 6, characterized in that: Both sides of the bending portion (210) are arranged to be convex outwards.
8. The blade shaft of a straw picker according to claim 6, characterized in that: A plurality of picking claws (211) are protrudingly provided at the outer end of the bending portion (210).
9. A straw picker blade shaft according to any one of claims 1-5, 7-8, characterized in that: The shaft roller (100) is provided with a knife seat (400), and the swing knife (200) is installed on the knife seat (400) via a pin shaft (500).
10. The blade shaft of a straw picker according to claim 9, characterized in that: A limiting groove (410) is provided on the outer side of the knife seat (400), and the end of the pin shaft (500) is accommodated and limited in the limiting groove (410).