Rotary tillage transmission mechanism and mini-tiller
By designing a rotary tillage transmission mechanism that causes the rotary tillage blades to rotate in the opposite direction, the problems of unstable operation and grass entanglement in micro tillers are solved, resulting in a more stable and safer tillage effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-24
AI Technical Summary
The rotary blades of existing micro-tillers rotate in the same or opposite direction as the walking wheels, causing instability of the whole machine, posing a safety hazard, and making it easy to get tangled in grass, affecting normal use.
Design a rotary tillage transmission mechanism that uses a first transmission component and two second transmission components to make the second shaft rotate in the opposite direction to the two third shafts, and the first cutter component rotates in the opposite direction to the second cutter component, so as to achieve cutting and crushing in the forward and reverse directions and form an interlaced motion trajectory.
It improves the stability and safety of the machine's operation, reduces soil residue, covers a wider area, reduces the risk of grass entanglement, and avoids missed tillage.
Smart Images
Figure CN224022264U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to agricultural machinery technical field, concretely relates to a kind of rotary tillage transmission mechanism and micro tiller. BACKGROUND
[0002] Micro tiller is the agricultural machinery with small-sized diesel engine or gasoline engine as power source, with the characteristics of light weight, small size, compact structure, core components include power system, transmission device and rotary tillage cutter, through driving rotary tillage cutter rotation can quickly complete land ploughing and soil breaking.
[0003] The existing micro tiller, rotary tillage cutter and walking wheel rotate in the same direction or reverse direction, i.e. rotary tillage cutter can only realize unidirectional rotation action. In the process of ploughing, if rotary tillage cutter and walking wheel rotate in the same direction, the whole machine may appear forward movement, not only easy to cause missed ploughing, but also exist safety hazard; if rotary tillage cutter and walking wheel rotate in reverse direction, walking wheel may appear skidding, affect the normal running of the whole machine. And, the cutter that can only do unidirectional rotation action is easy to appear grass entanglement in the process of ploughing, affect the normal use of cutter. SUMMARY
[0004] In view of the defects in the prior art, the utility model aims at providing a kind of rotary tillage transmission mechanism and micro tiller to improve the stability and safety in the process of whole machine operation, reduce the risk of grass entanglement.
[0005] In order to realize the above-mentioned purpose, the utility model provides a kind of rotary tillage transmission mechanism, including first shaft;Driving assembly for driving the rotation of the first shaft;Second shaft, which is arranged in parallel with the first shaft;First transmission assembly for transmission connection between the first shaft and the second shaft;Two third shafts are respectively rotatably sleeved on the second shaft, and the rotation axis of the third shaft coincides with the rotation axis of the second shaft;And two second transmission assemblies correspond to one of the third shafts, each first transmission assembly is used for transmission connection between the first shaft and the corresponding third shaft, and the rotation direction of the third shaft is 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 engaged 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 in parallel with the first shaft, the fourth gear is arranged on the fourth shaft and engaged with the third gear;The fifth gear is arranged on the second shaft and engaged with the fourth gear.
[0008] Preferably, the third gear is integrated with one of the first gears.
[0009] Preferably, the fourth gear comprises a first wheel body and a second wheel body, the first wheel body is engaged with the third gear, and the second wheel body is engaged with the fifth gear.
[0010] The utility model also provides a kind of mini-tiller, including the rotary tillage transmission mechanism of above, still including shell, two first cutter assemblies and two second cutter assemblies;The first shaft and the fourth shaft are rotationally arranged in the shell, and the second shaft and the third shaft extend outside the shell;Two first cutter assemblies are respectively arranged at the two ends of the second shaft, and each second cutter assembly is arranged on the corresponding third shaft.
[0011] Preferably, the first cutter assembly comprises a first connecting cylinder, a first cutter head and multiple first blades; the first connecting cylinder is sleeved outside the second shaft, the first cutter head is arranged at one end of the first connecting cylinder away from the shell, and multiple first blades are arranged on the first cutter head.
[0012] Preferably, the second cutter assembly comprises a second connecting cylinder, a second cutter head and multiple second blades; the second connecting cylinder is sleeved outside the third shaft, the second cutter head is arranged on the second connecting cylinder, and multiple second blades are arranged on the second cutter head; one end of the first connecting cylinder close to the second connecting cylinder is provided with a first dustproof disc, 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 edge of the through hole is outwardly convex to form a boss; one end of the second connecting cylinder close to the shell is provided with a second dustproof disc, and the edge of the second dustproof disc is arranged outside the boss on the corresponding side.
[0014] Preferably, the driving assembly comprises a fifth shaft, a sixth gear, a seventh gear and an eighth gear, the fifth shaft is rotationally 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 two ends of the fifth shaft, the sixth gear is located outside the shell, and the eighth gear is arranged on the first shaft and engaged with the seventh gear.
[0015] The utility model has the advantages that:
[0016] The utility model discloses a kind of rotary tillage transmission mechanism and micro tiller, its by second shaft and two third shafts design into coaxial structure, using the transmission effect of first transmission assembly and two second transmission assemblies, the rotating direction of second shaft and two third shafts is opposite, the rotating direction of first cutter assembly and second cutter assembly is also opposite, in this way, rotary tillage cutter will simultaneously exert force from positive direction and reverse direction to ground, the operation of whole machine in the process of ploughing is more stable, improve security, also make the structure of whole machine more compact.
[0017] In addition, the structure of the first cutter assembly and the second cutter assembly rotate reversely, which can simultaneously realize rapid cutting in forward rotation and deep crushing in reverse rotation, that is, the forward rotating blade rapidly cuts the surface soil, and the reverse rotating blade can perform secondary crushing on the deep soil, thereby reducing soil block residues and improving soil fineness. At the same time, the reverse blade combination can cover a wider area through different direction cutting paths, especially in complex terrain, which can effectively avoid the missing plowing phenomenon caused by the one-way rotation of the traditional rotary tillage blade.
[0018] In addition, the first cutter assembly and the second cutter assembly rotate reversely, which form staggered motion tracks during operation, can quickly cut off weed roots and disperse residues, and can significantly reduce the winding risk of the second shaft, the third shaft, and the cutter. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.
[0020] Figure 1 The structure schematic view of the rotary tillage transmission mechanism provided by an embodiment of the utility model is shown in the figure.
[0021] Figure 2 The structure schematic view of the structure hidden behind the shell is shown in the figure.
[0022] Figure 3 The structure schematic view of the first transmission assembly is shown in the figure.
[0023] Figure 4 The structure schematic view of the first transmission assembly is shown in the figure. Figure 3 The structure schematic view of another perspective in the state is shown in the figure.
[0024] Figure 5 The structure schematic view of the second transmission assembly is shown in the figure.
[0025] Figure 6 The structure schematic view of the first transmission assembly and the second transmission assembly is shown in the figure.
[0026] Figure 7 is a structural schematic view of a first cutter assembly;
[0027] Figure 8 is a structural schematic view of a second cutter assembly;
[0028] Figure 9 is a Figure 1 side view in a state;
[0029] Figure 10 is a Figure 9 schematic view of a section A-A in
[0030] Figure 11 is a Figure 10 partial schematic view of a position A in
[0031] Reference signs:
[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 cutter assembly; 81, first connecting cylinder; 82, first cutter disc; 83, first cutter blade; 90, second cutter assembly; 91, second connecting cylinder; 92, second cutter disc; 93, second cutter blade. DETAILED DESCRIPTION
[0033] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and therefore only serve as examples, and cannot limit the protection scope of the utility model.
[0034] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the technical personnel in the field to which the utility model belongs.
[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0036] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood to indicate or imply relative importance or imply the number of the indicated technical features. In the description of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.
[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.
[0038] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly contacted through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.
[0039] As shown in the Figures 1-11 In an embodiment of the present application, a rotary tillage transmission mechanism and a mini-tiller comprising the rotary tillage transmission mechanism are provided, wherein the rotary tillage transmission mechanism comprises a first shaft 10, a driving assembly, a second shaft 30, a first transmission assembly, two third shafts 50 and two second transmission assemblies. The first shaft 10 and the second shaft 30 are arranged in parallel, the driving assembly is used to drive the first shaft 10 to rotate, and the first transmission assembly is used to transmissionally connect the first shaft 10 and the second shaft 30. The third shaft 50 is in a hollow structure, and the two third shafts 50 are respectively rotationally 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 transmissionally connect the first shaft 10 and the corresponding third shaft 50, and make the rotation direction of the third shaft 50 opposite to the rotation direction of the second shaft 30.
[0040] The mini-tiller further comprises a housing 70, two first cutter assemblies 80 and two second cutter assemblies 90, the first shaft 10, the second shaft 30 and the third shaft 50 are all in rotational cooperation 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 cutter assemblies 80 are respectively arranged at the two ends of the second shaft 30, and each second cutter 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 transmits the power of the first shaft 10 to the second shaft 30, so that the second shaft 30 rotates, and the first cutter assemblies 80 installed at the two ends of the second shaft 30 are driven to rotate. At the same time that the first shaft 10 rotates, the second transmission assembly transmits the power of the first shaft 10 to the two third shafts 50, so that the two third shafts 50 rotate, and each second cutter assembly 90 is driven to rotate by the corresponding third shaft 50. Since the rotation direction of the third shaft 50 is opposite to that of the second shaft 30, the rotation directions of the second cutter assemblies 90 and the first cutter assemblies 80 are opposite.
[0042] The mini-tiller disclosed in the embodiment comprises a rotating tillage transmission mechanism and a mini-tiller, the second shaft 30 and the two third shafts 50 are designed to have the same coaxial line, the first transmission assembly and the two second transmission assemblies are used to drive the second shaft 30 and the two third shafts 50 to rotate in opposite directions, and the first cutter assemblies 80 and the second cutter assemblies 90 are also driven to rotate in opposite directions. In this way, the rotating tillage cutters can simultaneously apply forces to the ground from the positive direction and the reverse direction, the operation of the whole machine during the tillage process is more stable, the safety is improved, and the structure of the whole machine is more compact.
[0043] In addition, the first cutter assemblies 80 and the second cutter assemblies 90 are reversely rotated, which can simultaneously realize the rapid cutting in the positive direction and the deep breaking in the reverse direction, that is, the positive direction blades can rapidly cut the surface soil, and the reverse direction blades can perform secondary breaking on the deep soil, so as to reduce the soil block residues and improve the soil fineness. At the same time, the reverse direction blade combination can cover a wider area through different cutting paths, and especially in complex terrain, the reverse rotation of the traditional rotating tillage cutter can effectively avoid the missing tillage phenomenon.
[0044] In addition, the first cutter assemblies 80 and the second cutter assemblies 90 are reversely rotated, which can simultaneously realize the rapid cutting in the positive direction and the deep breaking in the reverse direction, that is, the positive direction blades can rapidly cut the surface soil, and the reverse direction blades can perform secondary breaking on the deep soil, so as to reduce the soil block residues and improve the soil fineness. At the same time, the reverse direction blade combination can cover a wider area through different cutting paths, and especially in complex terrain, the reverse rotation of the traditional rotating tillage cutter can effectively avoid the missing tillage phenomenon.
[0045] In one embodiment, the second transmission assembly includes a first gear 61 fixed on the first shaft 10 and a second gear 62 fixed on the third shaft 50 and engaged with the first gear 61. When the driving assembly drives the first shaft 10 to rotate, the first shaft 10 will drive the two first gears 61 to rotate synchronously, 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 cutter assembly 90 to rotate.
[0046] In one embodiment, the first transmission assembly includes a third gear 41 fixed on the first shaft 10, a fourth shaft 42 arranged in parallel with the first shaft 10 and rotatably disposed in the housing 70, a fourth gear 43 fixed on the fourth shaft 42 and engaged with the third gear 41, and a fifth gear 44 fixed on the second shaft 30 and engaged with the fourth gear 43, the fifth gear 44 being located between the two second gears 62.
[0047] When the driving assembly 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, the fifth gear 44 and the second shaft 30 will be driven to rotate (the rotation direction of the second shaft 30 is the same as that of the first shaft 10), so that the design of the opposite rotation directions of the second shaft 30 and the third shaft 50 is realized.
[0048] In one embodiment, the third gear 41 and one of the first gears 61 are integrated into one structure, or the third gear 41 and one of the first gears 61 can be designed as the same gear. The above structure design integrates the third gear 41 and one of the first gears 61 into one body, which realizes the synchronous transmission of the first transmission assembly and the second transmission assembly and 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 engaged with the third gear 41 and a second wheel body 432 engaged with the fifth gear 44. The outer diameters of the first wheel body 431 and the second wheel body 432 are designed reasonably, and the rotation speed of the second shaft 30 can be set reasonably through the reasonable design of 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 on 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 cutter assembly 90 comprises a second connecting cylinder 91, a second cutter head 92 and a plurality of second blades 93. The second connecting cylinder 91 is sleeved on the third shaft 50, the second cutter head 92 is arranged on the second connecting cylinder 91, and the plurality of second blades 93 are arranged on the second cutter head 92. The first connecting cylinder 81 is provided with a first dustproof disc at one end close to the second connecting cylinder 91, and the edge of the first dustproof disc is arranged outside the second connecting cylinder 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 outwardly protruding to form bosses. The second connecting cylinder 91 is provided with a second dustproof disc at one end close to the shell 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 comprises 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 shell 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 arranged at two ends of the fifth shaft 21 respectively, the sixth gear 22 is located outside the shell 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 mini-tiller 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, so as to realize the reverse rotation of the first cutter assembly 80 and the second cutter assembly 90.
[0054] In the specification of the utility model, a large number of specific details are explained. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the specification.
[0055] Finally, it should be noted that: the above embodiments are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the utility model, and they should be covered in the scope of the claims and the specification of the utility model.
Claims
1. A rotary tillage transmission mechanism, characterized in that, include: First axis (10); A drive component for driving the first axis (10) to rotate; The second axis (30) is arranged parallel to the first axis (10); A first transmission assembly is used to drive 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 components are respectively corresponding to one of the third shafts (50). Each first transmission component is used to drive the first shaft (10) and the corresponding third shaft (50) and 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 includes a first gear (61) and a second gear (62). The first gear (61) is mounted on the first shaft (10), and the second gear (62) is mounted 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 includes a third gear (41), a fourth shaft (42), a fourth gear (43), and a fifth gear (44); The third gear (41) is mounted on the first shaft (10), the fourth shaft (42) is arranged parallel to the first shaft (10), the fourth gear (43) is mounted on the fourth shaft (42) and meshes with the third gear (41); the fifth gear (44) is mounted 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 integrally formed.
5. The rotary tillage transmission mechanism according to claim 3, characterized in that, The fourth gear (43) includes a first gear body (431) and a second gear body (432), the first gear body (431) meshing with the third gear (41), and the second gear body (432) meshing with the fifth gear (44).
6. A micro-tiller, comprising the rotary tillage transmission mechanism according to any one of claims 3-5, characterized in that, It 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 rotatably disposed inside 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 disposed at both ends of the second shaft (30), and each second tool assembly (90) is disposed on the corresponding third shaft (50).
7. The micro-tiller according to claim 6, characterized in that, The first tool assembly (80) includes a first connecting cylinder (81), a first tool disc (82), and multiple first cutting blades (83); The first connecting cylinder (81) is sleeved outside the second shaft (30), the first cutter head (82) is located at the end of the first connecting cylinder (81) away from the housing (70), and multiple first blades (83) are located on the first cutter head (82).
8. The micro-tiller according to claim 7, characterized in that, The second tool assembly (90) includes a second connecting cylinder (91), a second cutter head (92), and multiple second blades (93); The second connecting cylinder (91) is sleeved outside the third shaft (50), the second cutter head (92) is disposed on the second connecting cylinder (91), and multiple second blades (93) are disposed on the second cutter head (92); the first connecting cylinder (81) is provided with a first dustproof disc at one end near the second connecting cylinder (91), and the edge of the first dustproof disc surrounds 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 formed with protrusions; the second connecting cylinder (91) is provided with a second dustproof disc at one end near the housing (70), and the edge of the second dustproof disc surrounds the protrusion on the corresponding side.
9. The micro-tiller according to claim 6, characterized in that, The drive assembly includes a fifth shaft (21), a sixth gear (22), a seventh gear (23), and an eighth gear (24). The fifth shaft (21) is rotatably disposed within 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 located at both ends of the fifth shaft (21). The sixth gear (22) is located outside the housing (70). The eighth gear (24) is located on the first shaft (10) and meshes with the seventh gear (23).