Rotary tillage transmission mechanism and mini-tiller

Abstract

The invention provides a rotary tillage transmission mechanism and a mini-tiller. The rotary tillage transmission mechanism comprises a first shaft, a driving assembly, a second shaft, a first transmission assembly, two third shafts and two second transmission assemblies. The first shaft and the second shaft are arranged in parallel, the driving assembly drives the first shaft to rotate, and the first transmission assembly is in transmission connection with the first shaft and the second shaft. The two third shafts are rotationally arranged on the second shaft in a sleeving mode, and the rotation axis of each third shaft coincides with the rotation axis of the second shaft. Each first transmission assembly is used for being in transmission connection with the first shaft and the corresponding third shaft and enabling the rotation direction of the third shaft to be opposite to the rotation direction of the second shaft. The second shaft and the two third shafts are designed to be of a coaxial structure with the opposite rotation directions, the rotation directions of the first cutter assembly and the second cutter assembly are opposite, in this way, a rotary tillage cutter can apply acting force to the ground from the positive direction and the negative direction at the same time, the whole machine operates more stably in the ploughing process, and safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and in particular to a rotary tillage transmission mechanism and a micro-tillage machine. Background Art

[0002] A micro-tiller is an agricultural machine powered by a small diesel engine or gasoline engine. It is characterized by light weight, small size and compact structure. Its core components include a power system, a transmission device and a rotary tillage tool. By driving the rotary tillage tool to rotate, it can quickly complete land tillage and soil crushing.

[0003] The rotary tillage cutter of the existing micro-tillage machine can rotate in the same direction or in the opposite direction as the traveling wheel, that is, the rotary tillage cutter can only realize unidirectional rotation. During the tillage process, if the rotary tillage cutter rotates in the same direction as the traveling wheel, the whole machine may move forward, which not only easily causes missed tillage, but also poses a safety hazard; if the rotary tillage cutter rotates in the opposite direction as the traveling wheel, the traveling wheel may slip, affecting the normal operation of the whole machine. In addition, the cutter that can only perform unidirectional rotation is prone to entanglement with grass during the tillage process, affecting the normal use of the cutter. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a rotary tillage transmission mechanism and a micro-tillage machine to improve the stability and safety of the whole machine during operation and reduce the risk of grass entanglement.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a rotary tillage transmission mechanism, including a first shaft; a driving assembly, used to drive the first shaft to rotate; a second shaft, arranged parallel to the first shaft; a first transmission assembly, used to transmit and connect the first shaft and the second shaft; two third shafts, respectively rotatably mounted on the second shafts, the rotation axis of the third shafts coincides with the rotation axis of the second shaft; and two second transmission assemblies, each corresponding to one of the third shafts, each of the first transmission assemblies is used to transmit and connect the first shaft with the corresponding third shaft, and make the rotation direction of the third shaft opposite to the rotation direction of the second shaft.

[0006] Preferably, the second transmission assembly includes a first gear and a second gear, the first gear is arranged on the first shaft, and the second gear is arranged on the third shaft and meshes with the first gear.

[0007] Preferably, the first transmission assembly includes a third gear, a fourth shaft, a fourth gear and a fifth gear; the third gear is arranged on the first shaft, the fourth shaft is arranged parallel to the first shaft, the fourth gear is arranged on the fourth shaft and meshes with the third gear; the fifth gear is arranged on the second shaft and meshes with the fourth gear.

[0008] Preferably, the third gear and one of the first gears are an integral structure.

[0009] Preferably, the fourth gear includes a first wheel body and a second wheel body, the first wheel body is meshed with the third gear, and the second wheel body is meshed with the fifth gear.

[0010] The present invention also provides a micro-tiller, comprising the above-mentioned rotary tillage transmission mechanism, and also comprising a shell, two first tool assemblies and two second tool assemblies; the first shaft and the fourth shaft are both rotatably arranged in the shell, and the second shaft and the third shaft extend out of the shell; the two first tool assemblies are respectively arranged at both ends of the second shaft, and each second tool assembly is arranged on the corresponding third shaft.

[0011] Preferably, the first tool assembly includes a first connecting cylinder, a first cutter disc and a plurality of first blades; the first connecting cylinder is sleeved outside the second shaft, the first cutter disc is arranged at one end of the first connecting cylinder away from the shell, and the plurality of first blades are arranged on the first cutter disc.

[0012] Preferably, the second tool assembly comprises a second connecting cylinder, a second knife disc and a plurality of second blades; the second connecting cylinder is sleeved outside the third shaft, the second knife disc is arranged on the second connecting cylinder, and a plurality of second blades are arranged on the second knife disc; a first dustproof disc is arranged at one end of the first connecting cylinder close to the second connecting cylinder, and the edge of the first dustproof disc is arranged outside the second connecting cylinder;

[0013] The shell is provided with two through holes for the third shaft to extend out, and the edges of the through holes are convex to form a boss; the second connecting tube is provided with a second dustproof plate at one end close to the shell, and the edge of the second dustproof plate is arranged outside the boss on the corresponding side.

[0014] Preferably, the drive assembly includes a fifth shaft, a sixth gear, a seventh gear and an eighth gear, the fifth shaft is rotatably arranged in the shell, and the axis of the fifth shaft is perpendicular to the axis of the first shaft; the sixth gear and the seventh gear are respectively arranged at both ends of the fifth shaft, the sixth gear is located outside the shell, and the eighth gear is arranged on the first shaft and meshes with the seventh gear.

[0015] Beneficial effects of the present invention:

[0016] The present invention discloses a rotary tillage transmission mechanism and a micro-tillage machine, which design the second shaft and the two third shafts to be coaxial structures, utilize the transmission action of the first transmission assembly and the two second transmission assemblies, so that the rotation directions of the second shaft and the two third shafts are opposite, and the rotation directions of the first tool assembly and the second tool assembly are also opposite. In this way, the rotary tillage tool will apply force to the ground from both the positive direction and the reverse direction at the same time, and the operation of the whole machine in the tillage process will be more stable, thereby improving the safety and making the structure of the whole machine more compact.

[0017] In addition, the counter-rotating structure of the first and second tool components can simultaneously achieve fast forward cutting and deep reverse crushing, that is, the forward blade quickly cuts the surface soil, while the reverse blade can perform secondary crushing on the deep soil, thereby reducing the residual soil clods and improving the soil fineness. At the same time, the reverse blade combination can cover a wider area through cutting paths in different directions, especially in complex terrain, which can effectively avoid the phenomenon of missed tillage caused by the one-way rotation of the traditional rotary tiller.

[0018] In addition, the counter-rotating first tool assembly and the second tool assembly form an interlaced motion trajectory during operation, which can quickly cut off the weed roots and disperse the residues, and can significantly reduce the risk of entanglement of the second axis, the third axis and the tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0020] Figure 1 A schematic structural diagram of a rotary tillage transmission mechanism provided by an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure behind the hidden shell;

[0022] Figure 3 is a structural schematic diagram of a first transmission assembly;

[0023] Figure 4 for Figure 3 Structural diagram of another perspective in the state;

[0024] Figure 5 is a structural schematic diagram of a second transmission assembly;

[0025] Figure 6 is a schematic diagram of the structure of the first transmission assembly and the second transmission assembly;

[0026] Figure 7is a structural schematic diagram of a first tool assembly;

[0027] Figure 8 is a schematic structural diagram of a second tool assembly;

[0028] Fig. 9 for Figure 1 Side view of the state;

[0029] Fig.10 for Fig. 9 AA section diagram in;

[0030] Fig.11 for Fig.10 The local schematic diagram of the A in the middle;

[0031] Reference numerals:

[0032] 10. First shaft; 21. Fifth shaft; 22. Sixth gear; 23. Seventh gear; 24. Eighth gear; 30. Second shaft; 41. Third gear; 42. Fourth shaft; 43. Fourth gear; 431. First wheel body; 432. Second wheel body; 44. Fifth gear; 50. Third shaft; 61. First gear; 62. Second gear; 70. Housing; 80. First tool assembly; 81. First connecting cylinder; 82. First cutter disc; 83. First blade; 90. Second tool assembly; 91. Second connecting cylinder; 92. Second cutter disc; 93. Second blade. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0034] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] like Figure 1-11 As shown, in one embodiment of the present invention, a rotary tillage transmission mechanism and a micro-tillage machine including the rotary tillage transmission mechanism are provided, wherein the rotary tillage transmission mechanism includes a first shaft 10, a drive assembly, a second shaft 30, a first transmission assembly, two third shafts 50 and two second transmission assemblies. The first shaft 10 is arranged in parallel with the second shaft 30, the drive assembly is used to drive the first shaft 10 to rotate, and the first transmission assembly is used to drive the first shaft 10 to connect with the second shaft 30. The third shaft 50 is a hollow structure, and the two third shafts 50 are respectively rotatably sleeved on the second shaft 30, and the rotation axis of the third shaft 50 coincides with the rotation axis of the second shaft 30. The two second transmission assemblies correspond to one third shaft 50 respectively, and each first transmission assembly is used to drive the connection between the first shaft 10 and the corresponding third shaft 50, and the rotation direction of the third shaft 50 is opposite to the rotation direction of the second shaft 30.

[0040] The micro-tillage machine also includes a housing 70, two first tool assemblies 80 and two second tool assemblies 90, the first shaft 10, the second shaft 30 and the third shaft 50 are all rotatably matched with the housing 70, the first shaft 10 is located in the housing 70, and the second shaft 30 and the third shaft 50 extend out of the housing 70. The two first tool assemblies 80 are respectively arranged at both ends of the second shaft 30, and each second tool assembly 90 is arranged on the corresponding third shaft 50.

[0041] When the driving assembly drives the first shaft 10 to rotate, the first transmission assembly will transfer the power of the first shaft 10 to the second shaft 30, causing the second shaft 30 to rotate, and the second shaft 30 will drive the first tool assembly 80 installed at both ends to rotate. While the first shaft 10 rotates, the second transmission assembly will transfer the power of the first shaft 10 to the two third shafts 50, causing the two third shafts 50 to rotate, and each third shaft 50 will drive the respective second tool assembly 90 to rotate. Since the rotation direction of the third shaft 50 is opposite to that of the second shaft 30, the rotation direction of the second tool assembly 90 is opposite to that of the first tool assembly 80.

[0042] The present embodiment discloses a rotary tillage transmission mechanism and a micro-tillage machine, which design the second shaft 30 and the two third shafts 50 to be coaxial structures, and utilize the transmission action of the first transmission assembly and the two second transmission assemblies to make the second shaft 30 and the two third shafts 50 rotate in opposite directions, and the first tool assembly 80 and the second tool assembly 90 rotate in opposite directions. In this way, the rotary tillage tool will apply force to the ground from both the positive direction and the reverse direction at the same time, and the operation of the whole machine during the tillage process will be more stable, thereby improving safety and making the structure of the whole machine more compact.

[0043] In addition, the structure of the first tool assembly 80 and the second tool assembly 90 rotating in opposite directions can simultaneously achieve fast forward cutting and deep crushing in reverse rotation, that is, the forward blade quickly cuts the surface soil, while the reverse blade can perform secondary crushing on the deep soil, thereby reducing the residual soil clods and improving the soil fineness. At the same time, the reverse blade combination can cover a wider area through cutting paths in different directions, especially in complex terrain, which can effectively avoid the phenomenon of missed tillage caused by the unidirectional rotation of the traditional rotary tiller.

[0044] In addition, the first tool assembly 80 and the second tool assembly 90 rotating in opposite directions form an interlaced motion trajectory during operation, which can quickly cut off the weed roots and disperse the residues, and can significantly reduce the risk of entanglement of the second shaft 30, the third shaft 50 and the tools.

[0045] In one embodiment, the second transmission assembly includes a first gear 61 and a second gear 62, wherein the first gear 61 is fixed on the first shaft 10, and the second gear 62 is fixed on the third shaft 50 and meshes with the first gear 61. When the driving assembly drives the first shaft 10 to rotate, the first shaft 10 will synchronously drive the two first gears 61 to rotate, and each first gear 61 will drive the corresponding second gear 62 and the third shaft 50 to rotate (the rotation direction of the third shaft 50 is opposite to that of the first shaft 10), so that each third shaft 50 drives the second tool assembly 90 to rotate.

[0046] In one embodiment, the first transmission assembly includes a third gear 41, a fourth shaft 42, a fourth gear 43 and a fifth gear 44. The third gear 41 is fixed on the first shaft 10, the fourth shaft 42 is arranged parallel to the first shaft 10, the fourth shaft 42 is rotatably disposed in the housing 70, the fourth gear 43 is fixed on the fourth shaft 42 and meshes with the third gear 41. The fifth gear 44 is fixed on the second shaft 30 and meshes with the fourth gear 43, and the fifth gear 44 is located between the two second gears 62.

[0047] When the driving component drives the first shaft 10 to rotate, the first shaft 10 will drive the third gear 41 to rotate, and through the transmission of the fourth gear 43, it will drive the fifth gear 44 and the second shaft 30 to rotate (the rotation direction of the second shaft 30 is the same as the rotation direction of the first shaft 10). In this way, a design in which the second shaft 30 and the third shaft 50 rotate in opposite directions is realized.

[0048] In one embodiment, the third gear 41 and one of the first gears 61 are an integral structure, or the third gear 41 and one of the first gears 61 can also be designed as the same gear. The above structural design integrates the third gear 41 and one of the first gears 61 into a whole, while achieving synchronous transmission of the first transmission assembly and the second transmission assembly, and also facilitates the assembly of the first gear 61 and the third gear 41.

[0049] In one embodiment, the fourth gear 43 includes a first wheel body 431 and a second wheel body 432, the first wheel body 431 is meshed with the third gear 41, and the second wheel body 432 is meshed with the fifth gear 44. The outer diameter of the first wheel body 431 and the outer diameter of the second wheel body 432 can reasonably set the rotation speed of the second shaft 30 by reasonably designing the outer diameters of the third gear 41, the first wheel body 431, the second wheel body 432 and the fifth gear 44.

[0050] In one embodiment, the first cutter assembly 80 includes a first connecting cylinder 81, a first cutter disc 82 and a plurality of first blades 83. The first connecting cylinder 81 is sleeved outside the second shaft 30, the first cutter disc 82 is arranged at one end of the first connecting cylinder 81 away from the housing 70, and the plurality of first blades 83 are arranged on the first cutter disc 82.

[0051] In one embodiment, the second tool assembly 90 includes a second connecting cylinder 91, a second cutter disc 92, and a plurality of second blades 93. The second connecting cylinder 91 is sleeved outside the third shaft 50, the second cutter disc 92 is arranged on the second connecting cylinder 91, and the plurality of second blades 93 are arranged on the second cutter disc 92. A first dustproof disc is provided at one end of the first connecting cylinder 81 close to the second connecting cylinder 91, and the edge of the first dustproof disc is arranged outside the second connecting cylinder 91. The housing 70 is provided with two through holes for the third shaft 50 to extend out, and the edges of the through holes are convex to form a boss. A second dustproof disc is provided at one end of the second connecting cylinder 91 close to the housing 70, and the edge of the second dustproof disc is arranged outside the boss on the corresponding side.

[0052] In one embodiment, the driving assembly includes a fifth shaft 21, a sixth gear 22, a seventh gear 23 and an eighth gear 24, and the sixth gear 22, the seventh gear 23 and the eighth gear 24 are all bevel gears. The fifth shaft 21 is rotatably arranged in the housing 70, and the axis of the fifth shaft 21 is perpendicular to the axis of the first shaft 10. The sixth gear 22 and the seventh gear 23 are respectively arranged at both ends of the fifth shaft 21, the sixth gear 22 is located outside the housing 70, and the eighth gear 24 is arranged on the first shaft 10 and meshes with the seventh gear 23.

[0053] The power part of the micro-tillage machine can transmit power to the second shaft 30 and the third shaft 50 through the fifth shaft 21, the seventh gear 23 and the eighth gear 24 by meshing with the sixth gear 22, thereby realizing the reverse rotation of the first tool assembly 80 and the second tool assembly 90.

[0054] In the specification of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A rotary tillage transmission mechanism, characterized in that: include: First axis (10); A driving assembly, used for driving the first shaft (10) to rotate; A second axis (30) arranged parallel to the first axis (10); A first transmission assembly, used for transmission connection between the first shaft (10) and the second shaft (30); Two third shafts (50) are respectively rotatably sleeved on the second shaft (30), and the rotation axis of the third shaft (50) coincides with the rotation axis of the second shaft (30); as well as Two second transmission assemblies correspond to one of the third shafts (50), respectively. Each of the first transmission assemblies is used to transmit and connect the first shaft (10) with the corresponding third shaft (50), and to make the rotation direction of the third shaft (50) opposite to the rotation direction of the second shaft (30).

2. The rotary tillage transmission mechanism according to claim 1, characterized in that: The second transmission assembly comprises a first gear (61) and a second gear (62), wherein the first gear (61) is arranged on the first shaft (10), and the second gear (62) is arranged on the third shaft (50) and meshes with the first gear (61).

3. The rotary tillage transmission mechanism according to claim 2, characterized in that: The first transmission assembly comprises a third gear (41), a fourth shaft (42), a fourth gear (43) and a fifth gear (44); The third gear (41) is arranged on the first shaft (10), the fourth shaft (42) is arranged parallel to the first shaft (10), the fourth gear (43) is arranged on the fourth shaft (42) and meshes with the third gear (41); the fifth gear (44) is arranged on the second shaft (30) and meshes with the fourth gear (43).

4. The rotary tillage transmission mechanism according to claim 3, characterized in that: The third gear (41) and one of the first gears (61) are an integral structure.

5. The rotary tillage transmission mechanism according to claim 3, characterized in that: The fourth gear (43) comprises a first wheel body (431) and a second wheel body (432); the first wheel body (431) is meshed with the third gear (41); and the second wheel body (432) is meshed with the fifth gear (44).

6. A micro-tillage machine, comprising the rotary tillage transmission mechanism according to any one of claims 3 to 5, characterized in that: Also includes a housing (70), two first tool assemblies (80) and two second tool assemblies (90); The first shaft (10) and the fourth shaft (42) are both rotatably arranged in the housing (70), and the second shaft (30) and the third shaft (50) extend out of the housing (70); two first tool assemblies (80) are respectively arranged at two ends of the second shaft (30), and each second tool assembly (90) is arranged on the corresponding third shaft (50).

7. The micro-tillage machine according to claim 6, characterized in that: The first tool assembly (80) comprises a first connecting cylinder (81), a first tool disc (82) and a plurality of first blades (83); The first connecting tube (81) is sleeved outside the second shaft (30), the first cutter disc (82) is arranged at one end of the first connecting tube (81) away from the housing (70), and a plurality of first blades (83) are arranged on the first cutter disc (82).

8. The micro-tillage machine according to claim 7, characterized in that: The second tool assembly (90) comprises a second connecting cylinder (91), a second tool disc (92) and a plurality of second blades (93); The second connecting tube (91) is sleeved outside the third shaft (50), the second blade disc (92) is arranged on the second connecting tube (91), and a plurality of second blades (93) are arranged on the second blade disc (92); a first dustproof disc is arranged at one end of the first connecting tube (81) close to the second connecting tube (91), and the edge of the first dustproof disc is arranged outside the second connecting tube (91); The shell (70) is provided with two through holes for the third shaft (50) to extend out, and the edges of the through holes are protruding outward to form a boss; the second connecting tube (91) is provided with a second dustproof plate at one end close to the shell (70), and the edge of the second dustproof plate is arranged outside the boss on the corresponding side.

9. The micro-tillage machine according to claim 6, characterized in that: The driving assembly comprises a fifth shaft (21), a sixth gear (22), a seventh gear (23) and an eighth gear (24); the fifth shaft (21) is rotatably disposed in the housing (70); and the axis of the fifth shaft (21) is perpendicular to the axis of the first shaft (10); The sixth gear (22) and the seventh gear (23) are respectively arranged at two ends of the fifth shaft (21), the sixth gear (22) is located outside the housing (70), and the eighth gear (24) is arranged on the first shaft (10) and meshes with the seventh gear (23).

Images