Rotary blade and rotary blade group

Abstract

The rotary blade comprises a blade body, the blade body comprises a straight section and a bent section, a blade face of the bent section is bent in the axial direction of a blade shaft, at least one face of the blade face, close to the bent section, of the straight section is provided with a transverse blade, and the transverse blade is perpendicular to the straight section. The rotary blade assembly comprises rotary blades and a blade shaft, multiple layers of rotary blades are arranged in the axial direction of the blade shaft, each layer of rotary blades comprises three rotary blades distributed in the circumferential direction, and all the rotary blades of the outermost layer of rotary blades are bent inwards in the axial direction of the blade shaft. Two of the other rotary blades are bent outwards in the axial direction of the cutter shaft, and one rotary blade is bent inwards in the axial direction of the cutter shaft. According to the rotary blade, the structure is optimized on the basis of a traditional common rotary blade, the transverse blade is of a special position and structure, rotary tillage soil is finer, the grass chopping function is achieved, and grass is effectively prevented from winding the rotary blade and the blade shaft.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the agricultural machinery technical field, concretely relates to a rotary tiller and rotary tiller assembly. BACKGROUND

[0002] The rotary tiller is an important component of the soil rotary tiller, and the quality of the rotary tiller directly affects the rotary tillage efficiency and stability. The ordinary rotary tiller usually adopts an arc-shaped blade. Although the dry land tillage is relatively deep, the soil clods are relatively large, and secondary tillage is required, resulting in low land tillage efficiency and time and labor. If the land is tilled with long grass stems, especially long creeping stems, they often wrap around the base of the rotary tiller and the blade shaft, hindering the rotary tillage operation. The rotary tiller needs to be manually cleaned every time, which is very troublesome. Although the existing technology can install an anti-winding plate on the rotary tiller, it will reduce the land tillage depth. Therefore, it is necessary to develop a rotary tiller and rotary tiller assembly that can prevent grass from winding and till the soil more finely without reducing the land tillage depth. SUMMARY

[0003] To solve the above technical problems, the first purpose of the utility model is to provide a rotary tiller that optimizes the problem of coarse dry land tillage and solves the common problem of shallow ordinary anti-winding tillage.

[0004] The second purpose of the utility model is to provide a rotary tiller assembly.

[0005] The first purpose of the utility model is achieved by including a blade body, the blade body includes a straight section and a curved section, the curved section has a curved blade surface, and the curved direction of the blade surface is curved towards the blade shaft axis, at least one side of the blade surface of the straight section near the curved section is provided with a transverse blade, the transverse blade is perpendicular to the straight section, and the length of the transverse blade is 3cm-5cm.

[0006] The transverse blade is processed by heat treatment and sharpening, and the blade edge is sharp and durable.

[0007] The straight section and the curved section of the blade body are integrally formed, and the transverse blade and the blade surface can be welded; the rotary tiller can be processed using waste steel bars, so that waste materials can be reused; the processing process is as follows: straightening and cutting of waste steel bars → medium frequency heating → rolling mill rolling to the required size → blade forming and punching → quenching treatment → surface plastic spraying treatment → finished product assembly, and the transverse blade edge is processed by punching and cutting of the excess steel → milling opening → high-frequency quenching in sequence.

[0008] Preferably, the curved section is a curved section from the middle to the front end of the blade body.

[0009] Preferably, the curved section is bent at 90°, so that the rotary tiller runs more stably, which is beneficial to reduce shaking and makes the use process more relaxed.

[0010] Preferably, the bending direction is bending inward or outward along the axis of the blade shaft.

[0011] Preferably, when the straight section has horizontal blades on both sides of the blade surface, the two horizontal blades are arranged in a V shape, which reduces the resistance while ensuring the crushing and mowing effect.

[0012] Preferably, the horizontal blade is inclined.

[0013] The second purpose of the utility model is achieved by comprising the rotary tiller and the blade shaft, a plurality of rotary tiller groups are sequentially installed along the axis of the blade shaft, the circumferential rotation angle between the two adjacent rotary tiller groups is 60°, it is necessary to point out that the circumferential rotation refers to the circumferential rotation along the axis of the blade shaft, each rotary tiller group comprises three rotary tillers distributed along the circumference, the included angle between the two adjacent rotary tillers in each rotary tiller group is 60°, except that the bending direction of all the rotary tillers in the outermost rotary tiller group is inward along the axis of the blade shaft, the bending direction of the rotary tillers in the remaining rotary tiller groups is outward along the axis of the blade shaft, and the bending direction of one rotary tiller is inward along the axis of the blade shaft, the structure ensures that two rotary tillers with the same direction contact the ground at the same time, when there are four rotary tiller groups, the two rotary tiller groups in the middle contact the ground at the same time, after cutting the ground, the two rotary tiller groups are rotated by 60°, and then the remaining two rotary tiller groups cut the ground at the same time, so that the cutting is alternately carried out in intervals, and the rotary tiller is bent, which increases the cutting range and makes the cut soil finer and improves the stability of the cutting process and reduces the vibration of the cutting tool.

[0014] Preferably, one rotary tiller assembly has four rotary tillers, and the plurality of rotary tillers increase the horizontal working range.

[0015] Preferably, the rotary tiller and the blade shaft are detachably connected, and the rotary tiller can be installed by using the mounting plate, bolts and other parts known to those skilled in the art, so that the rotary tiller can be replaced.

[0016] Preferably, the horizontal blade is arranged on the inward blade surface of the outermost rotary tiller, which avoids the entanglement of the outermost rotary tiller with grass and makes the dismounting and mounting of the cutting tool safer, and the horizontal blade is arranged on both sides of the blade surface of the remaining rotary tiller, which cuts the soil blocks that have not been cut by the rotary tiller, and the soil is finer after being cut for several times.

[0017] Preferably, a plurality of triangular piece mounting seats are sleeved on the cutter shaft, two adjacent triangular piece mounting seats are circumferentially rotated by 60 degrees, it is to be noted that the circumferential rotation is along the circumferential rotation of the cutter shaft, and the cutter shaft and the triangular piece mounting seat can be connected through welding; three corners of the triangular piece mounting seat are respectively provided with first mounting holes, one layer of rotary tillage blade group corresponds to one triangular piece mounting seat, the rotary tillage blade tail is provided with two second mounting holes, a groove is arranged between the two second mounting holes, the second mounting holes of the rotary tillage blade and the first mounting holes of the triangular piece mounting seat are connected through bolts, and the cutter shaft is embedded in the groove; the triangular piece mounting seat not only facilitates the installation and removal of the rotary tillage blade, but also plays a positioning role on the rotary tillage blade, the rotary tillage blade is accurately installed, and the installation difficulty is reduced.

[0018] Preferably, the rotary tillage blade assembly has two and is symmetrically arranged, which is beneficial to driving two rotary tillage blade assemblies to work simultaneously by one set of power part, and further increases the horizontal working range.

[0019] The utility model discloses the beneficial effects of the following:

[0020] 1. The rotary tillage blade of the utility model is optimized structure on the basis of traditional ordinary rotary tillage blade, adopts special position and structure to horizontal knife, not only finer soil is rotary tilled, but also has the function of grass crushing, effectively prevents grass from winding rotary tillage blade and cutter shaft, and will not affect the tillage depth of rotary tillage blade.

[0021] 2. The rotary tillage blade group of the utility model adopts multilayer rotary tillage blade, and different direction rotary tillage blades cooperate with each other, so that the tillage effect is more ideal, solves the problem that the body shakes too much when the ordinary tool is tilled, and makes the tilled land more fine and loose. DRAWINGS

[0022] Figure 1 It is the three-dimensional structure schematic diagram of the rotary tillage blade of example 1.

[0023] Figure 2 It is the three-dimensional structure schematic diagram of the rotary tillage blade of example 2.

[0024] Figure 3 It is the three-dimensional structure schematic diagram of the rotary tillage blade of example 2.

[0025] Figure 4 It is the three-dimensional structure schematic diagram of the rotary tillage blade assembly of example 3.

[0026] Figure 5 It is the three-dimensional structure schematic diagram of the triangular piece mounting seat arranged on the cutter shaft of example 5.

[0027] Figure 6 It is the three-dimensional structure schematic diagram of the rotary tillage blade assembly of example 4.

[0028] Figure 7 It is the three-dimensional structure schematic diagram of the rotary tillage blade assembly of example 6.

[0029] In the diagram: 1-blade body, 101-straight section, 102-bent section, 103-second mounting hole, 104-groove, 2-cross blade, 3-blade shaft, 4-triangular plate mounting base, 5-first mounting hole. Detailed Implementation

[0030] The present invention will be further described below with reference to the embodiments and accompanying drawings, but this does not limit the present invention in any way. Any changes or substitutions made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0031] Example 1

[0032] As attached Figure 1 As shown, the rotary tiller blade of this embodiment includes a blade body 1, which includes a straight section 101 and a curved section 102. The curved section 102 has a curved blade surface, and the curved direction of the blade surface is curved towards the blade shaft axis. A horizontal blade 2 is provided on one side of the blade surface of the straight section 101 near the curved section 102. The horizontal blade 2 is perpendicular to the straight section 101, and the length of the horizontal blade 2 is 4cm.

[0033] Example 2

[0034] As attached Figure 2 ~Appendix Figure 3 As shown, the rotary tiller blade in this embodiment is based on embodiment 1, but differs from embodiment 1 in that: the curved section 102 is curved at 90°, the curved section 102 is the curved section from the middle to the front end of the blade body 1, and there are two horizontal blades 2 on the blade surface of the straight section 101 near the curved section 102. The blade of the horizontal blade 2 is oblique, the two horizontal blades 2 are arranged in a V shape, and the length of the horizontal blade 2 is 3cm.

[0035] Example 3

[0036] As attached Figure 4 As shown, the rotary tiller assembly of this embodiment includes the rotary tiller blades and the blade shaft 3 of Embodiment 1. Two layers of rotary tiller blades are installed sequentially along the axial direction of the blade shaft 3. The two adjacent layers of rotary tiller blades are rotated 60° circumferentially. Each layer of rotary tiller blades includes three rotary tiller blades distributed circumferentially. In each layer of rotary tiller blades, the included angle between any two adjacent rotary tiller blades is 60°. Except for the outermost layer of rotary tiller blades, where all rotary tiller blades are bent inward toward the blade shaft axis, the remaining rotary tiller blades have two rotary tiller blades bent outward toward the blade shaft axis and one rotary tiller blade bent inward toward the blade shaft axis. See the attached diagram for the inner and outer sides. Figure 4 The diagram shows that the outermost rotary tillers all have horizontal blades 2 on their inward-facing blade surfaces, while the remaining rotary tillers all have horizontal blades 2 on both sides of their blade surfaces. The length of each horizontal blade 2 is 5cm.

[0037] Example 4

[0038] As attached Figure 6 As shown, the rotary tiller assembly in this embodiment is based on embodiment 3, but differs from embodiment 3 in that: the rotary tiller blades are the same as those in embodiment 2, and one rotary tiller assembly has four layers of rotary tiller blades; the inner and outer sides are shown in the attached diagram. Figure 6 Markings in the diagram;

[0039] Example 5

[0040] As attached Figure 5 As shown, the rotary tiller assembly in this embodiment is based on embodiment 4. The blade shaft 3 is fitted with four triangular mounting seats 4. The two adjacent triangular mounting seats 4 are rotated 60° circumferentially. The three corners of the triangular mounting seats 4 are respectively provided with first mounting holes 5. One layer of rotary tiller assembly corresponds to one triangular mounting seat 4. The tail of the rotary tiller is provided with two second mounting holes 103. A groove 104 is opened between the two second mounting holes 103. The second mounting holes 103 of the rotary tiller are connected to the first mounting holes 5 of the triangular mounting seats 4 by bolts, and the blade shaft 3 is embedded in the groove 104.

[0041] Example 6

[0042] As attached Figure 7 As shown, the rotary tiller blade assembly in this embodiment is based on embodiment 5, but differs from embodiment 5 in that: there are two rotary tiller blade assemblies arranged symmetrically; the inner and outer sides are shown in the attached diagram. Figure 7 Marked in the diagram.

[0043] The working principle and process of this utility model: During the rotary tillage process, the blade body 1 of this utility model turns up the soil. The turned-up soil collides with the horizontal blade 2 perpendicular to the straight section 101, which further breaks up the soil. At the same time, the horizontal blade 2 helps to increase the rotary tillage range and has the effect of shredding grass. The rotary tillage blade and blade shaft are not easy to get tangled in grass, which helps to ensure the stable operation of the rotary tillage equipment.

[0044] This utility model rotary tiller blade assembly can be installed on a rotary tiller. During operation, the rotary tiller blades at intervals simultaneously contact the ground, rotate 60° after cutting the ground, and then the remaining rotary tiller blades at intervals simultaneously cut the ground. This alternating cutting, combined with the curved rotary tiller blades, improves the stability of travel in the axial direction, reduces the effect of blade vibration during travel, and increases the cutting range, while also cutting finer soil.

Claims

1. A rotary tiller comprising a blade body (1), said blade body (1) comprising a straight section (101) and a curved section (102), the curved section (102) being curved in a direction of a blade face, and the curved direction of the blade face being curved toward a direction of an axis of the blade, characterized in that The straight section (101) near the curved section (102) is provided with a horizontal knife (2) on at least one side of the blade surface, and the horizontal knife (2) is perpendicular to the straight section (101), and the length of the horizontal knife (2) is 3cm-5cm.

2. The rotary blade of claim 1 wherein The curved section (102) is a curved section from the middle to the front end of the knife body (1).

3. A rotary tine according to claim 1 or 2, characterised in that The curved section (102) is 90° curved.

4. The rotary blade of claim 1 wherein The curved direction is inward or outward curved towards the axis of the knife shaft.

5. The rotary blade of claim 1 wherein When the straight section (101) has horizontal knives (2) on both sides of the blade surface, the two horizontal knives (2) are arranged in a V shape.

6. The rotary blade according to claim 1 or 5, characterized in that The blade edge of the horizontal knife (2) is inclined.

7. A rotary blade assembly characterized by The rotary tillage knife assembly comprises the rotary tillage knife and the knife shaft (3), a plurality of rotary tillage knife groups are sequentially arranged along the axis of the knife shaft (3), the rotary tillage knife groups adjacent in front and behind are rotated by 60° in the circumferential direction, each rotary tillage knife group comprises three rotary tillage knives distributed in the circumferential direction, the included angle between the adjacent two rotary tillage knives in each rotary tillage knife group is 60°, the curved directions of all the rotary tillage knives in the outermost rotary tillage knife group are inward curved towards the axis of the knife shaft, the curved directions of two rotary tillage knives in the other rotary tillage knife groups are outward curved towards the axis of the knife shaft, and the curved direction of the other rotary tillage knife in the rotary tillage knife group is inward curved towards the axis of the knife shaft.

8. The rotating blade assembly of claim 7, wherein The rotary tillage knife assembly has four rotary tillage knife groups.

9. The rotating blade assembly of claim 7, wherein The outermost rotary tillage knife group is provided with a horizontal knife (2) on the inward blade surface, and the other rotary tillage knife groups are provided with horizontal knives (2) on both sides of the blade surface.

10. The rotating blade assembly of claim 7, wherein The knife shaft (3) is provided with a plurality of triangular plate mounting seats (4), the triangular plate mounting seats (4) adjacent in front and behind are rotated by 60° in the circumferential direction, the three corners of the triangular plate mounting seat (4) are respectively provided with first mounting holes (5), one rotary tillage knife group corresponds to one triangular plate mounting seat (4), the tail of the rotary tillage knife is provided with two second mounting holes (103), a groove (104) is arranged between the two second mounting holes (103), the second mounting hole (103) of the rotary tillage knife and the first mounting hole (5) of the triangular plate mounting seat (4) are connected through a bolt, and the knife shaft (3) is embedded in the groove (104).

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