Deep ploughing cutter and crushing device

Abstract

The utility model relates to a deep ploughing cutter and crushing device, which comprises a first connecting part, a second connecting part and a working part, the first connecting part is connected with the second connecting part, the second connecting part is connected with the working part, and the working part is provided with a first working surface, a second working surface, a third working surface and a fourth working surface. A first included angle alpha is formed between the first working face and the second working face, a second included angle beta is formed between the third working face and the fourth working face, the first included angle alpha is smaller than 180 degrees, and the second included angle beta is larger than 180 degrees. The rotary tillage machine has the advantages of being large in soil penetrating depth, good in rotary tillage effect and high in structural strength.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to the technical field of rotary tillage, and specifically refers to a deep tillage knife and a crushing device. Background Art

[0002] As an agricultural machinery, rotary tiller is widely used in modern agricultural production because of its powerful and efficient soil crushing and tilling capabilities.

[0003] A rotary tiller usually uses a crushing device to break and till the soil. The rotary tiller blade in the crushing device is the core working part of the crushing device. Its performance and service life directly determine the working effect and efficiency of the rotary tiller. However, most existing rotary tillers have some problems during rotary tillage. For example, due to the influence of the structure, the existing rotary tillers have large resistance to soil penetration, shallow soil penetration depth, and poor rotary tillage effect.

[0004] At the same time, whether the bending angle and blade length of the rotary tiller are designed appropriately is also an important factor affecting the performance of the rotary tiller. However, the existing rotary tiller has a small bending angle and a long blade length, which results in the blade bouncing, filing the ground, and vibrating when the rotary tiller contacts the ground under high-speed rotation, thereby adversely affecting the penetration depth of the rotary tiller. In severe cases, the rotary tiller may be deformed, damaged, or even broken.

[0005] In addition, when working in the cultivated land, the rotary tiller will inevitably collide with hard objects such as stones in the cultivated land during the high-speed rotation. The existing rotary tiller is usually a narrow strip structure with poor strength, which can easily cause the rotary tiller to deform, damage or even break, greatly reducing the service life of the rotary tiller. At the same time, frequent replacement of rotary tillers also reduces the working efficiency of the rotary tiller and increases the use cost of the rotary tiller. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a deep tillage knife with deep soil penetration, good rotary tillage effect and high structural strength.

[0007] The utility model is implemented through the following technical scheme, and provides a deep tillage knife, including a first connecting part, a second connecting part, and a working part, wherein the first connecting part is connected to the second connecting part, the second connecting part is connected to the working part, the working part is provided with a first working surface, a second working surface, a third working surface, and a fourth working surface, there is a first angle α between the first working surface and the second working surface, there is a second angle β between the third working surface and the fourth working surface, the first angle α is less than 180°, and the second angle β is greater than 180°.

[0008] Compared with the prior art, the utility model has the following beneficial effects: when the deep tillage blade breaks the soil, since there is a second angle β greater than 180° between the third working surface and the fourth working surface, the contact area between the working part and the unbroken soil at the moment of contact can be reduced, and the soil is contacted with a smaller area rather than the entire plane, thereby increasing the pressure exerted by the working part on the unbroken soil, thereby improving the ability of the working part to break the soil and the depth of the deep tillage blade to penetrate into the soil. In the process of the working part entering the soil and moving in the soil, the soil can pass smoothly between the first working surface and the second working surface, thereby reducing the resistance of the soil on the working part, thereby further improving the soil breaking ability of the first crushing part and the depth of the deep tillage blade to penetrate into the soil;

[0009] In addition, when the working part collides with hard objects such as stones in the soil during high-speed rotation, due to the second angle β greater than 180° between the third working surface and the fourth working surface, the third working surface and the fourth working surface together form a triangular structure, which supports the working part, improves the structural strength of the working part, and reduces deformation, damage or even breakage of the working part due to collision with hard objects such as stones. At the same time, when hard objects such as stones collide with the working part, they are more likely to slide or bounce off the third working surface or the fourth working surface, further reducing deformation, damage or even breakage of the working part due to collision with hard objects such as stones, and improving the service life of the deep tillage knife.

[0010] Preferably, the working part includes a first crushing part and a second crushing part, the first crushing part is connected to the second crushing part, the second crushing part is connected to the second connecting part, from the end of the first crushing part away from the second crushing part to the connection between the first crushing part and the second crushing part, the first angle α is a fixed value or gradually increases, and from the end of the first crushing part away from the second crushing part to the connection between the first crushing part and the second crushing part, the second angle β is a fixed value or gradually decreases.

[0011] Preferably, the first angle α gradually increases from the connection point between the second crushing part and the first crushing part to the side where the second crushing part is connected to the second connecting part.

[0012] Preferably, the second angle β gradually decreases from the connection point between the second broken part and the first broken part to the side where the second broken part and the second connecting part are connected.

[0013] Preferably, the thickness of the first broken part is fixed or gradually increases from one end of the first broken part away from the second broken part to the connection between the first broken part and the second broken part.

[0014] Preferably, the thickness of the second broken part gradually increases from the connection point between the second broken part and the first broken part to the connection point between the second broken part and the second connecting part.

[0015] The beneficial effect of adopting the above-mentioned preferred technical solution is that: since the first angle α gradually increases and the second angle β gradually decreases from the connection between the second crushing part and the first crushing part to the side where the second crushing part is connected to the second connecting part, and the thickness of the second crushing part gradually increases, it is possible to improve the structural strength of the deep plowing knife while ensuring the working effect, reduce deformation of the deep plowing knife and other problems, and extend the life of the deep plowing knife.

[0016] Preferably, a fifth working surface and a sixth working surface are respectively provided on both sides of the working portion, and the width between the fifth working surface and the sixth working surface gradually increases from a side of the working portion away from the second connecting portion to a side where the working portion is connected to the second connecting portion.

[0017] Preferably, the maximum width between the fifth working surface and the sixth working surface is not less than 25 mm and not more than 60 mm.

[0018] Preferably, the fifth working surface and the sixth working surface are symmetrically arranged on the working portion.

[0019] The beneficial effect of adopting the above-mentioned preferred technical solution is that: since the width between the fifth working surface and the sixth working surface gradually increases from the side of the working part away from the second connecting part to the side where the working part is connected to the second connecting part, the working part has a better ability to penetrate into the soil, ensuring the penetration depth of the deep plowing knife into the soil. At the same time, the maximum width between the fifth working surface and the sixth working surface is controlled between 25mm-40mm, which can ensure the penetration depth of the deep plowing knife into the soil and enable the deep plowing knife to have a good tillage ability.

[0020] Preferably, the working portion is provided with a seventh working surface and an eighth working surface, and the width between the seventh working surface and the eighth working surface gradually decreases from a side of the working portion away from the second connecting portion to a side where the working portion is connected to the second connecting portion.

[0021] Preferably, the minimum width between the seventh working surface and the eighth working surface, the width of the second connecting portion, and the width of the first connecting portion are all the same.

[0022] Preferably, the working portion is provided with a fifth working surface and a sixth working surface (306), the fifth working surface is connected to the seventh working surface, the sixth working surface is connected to the eighth working surface, and the connection between the fifth working surface and the seventh working surface, and the connection between the sixth working surface and the eighth working surface are both smooth transitions.

[0023] Preferably, the seventh working surface and the eighth working surface are both arc-shaped curved surfaces.

[0024] Preferably, the seventh working surface and the eighth working surface are symmetrically arranged on the working part.

[0025] The beneficial effects of adopting the above preferred technical solution are: firstly, since the width between the seventh working surface and the eighth working surface gradually decreases from the side of the working part away from the second connecting part to the side where the working part is connected to the second connecting part, it is possible to reduce the unnecessary resistance encountered by the deep plowing knife when it moves in the soil while ensuring the above-mentioned ability of the deep plowing knife, thereby further increasing the penetration depth of the deep plowing knife into the soil;

[0026] Secondly, by designing the seventh working surface and the eighth working surface as arc-shaped surfaces, and designing the connection between the seventh side and the second connecting part, and the connection between the eighth working surface and the second connecting part as smooth transitions, the stress concentration problem caused by width changes can be reduced, thereby extending the service life of the deep plowing knife.

[0027] Preferably, the second connecting portion is provided with a first side surface and a second side surface, and the thickness between the first side surface and the second side surface gradually increases from the connection point between the second connecting portion and the working portion to the connection point between the second connecting portion and the first connecting portion.

[0028] Preferably, the maximum thickness between the first side surface and the second side surface is the same as the thickness of the first connecting portion.

[0029] Preferably, the first side surface and the second side surface are both arc-shaped curved surfaces.

[0030] The beneficial effect of adopting the above-mentioned preferred technical solution is that: since the thickness between the first side surface and the second side surface gradually increases from the connection point between the second connecting part and the working part to the connection point between the second connecting part and the first connecting part, it is obvious that the structural strength of the deep plowing knife can be improved, so that the deep plowing knife is not easy to deform and other problems, thereby improving the service life of the deep plowing knife. At the same time, since the first side surface and the second side surface are both arc-shaped surfaces, when the deep plowing knife is working, it can prevent stress concentration from occurring at the bending point, which may cause deformation, breakage and other problems of the deep plowing knife.

[0031] Preferably, the working part comprises a first crushing part, and a height H of the first crushing part is not less than 4 mm and not more than 12 mm.

[0032] Preferably, the width of the first connecting portion is not less than 10 mm and not more than 60 mm.

[0033] Preferably, the working portion is provided with a first vertex, the first connecting portion is provided with a first mounting hole, and the straight-line distance from the first vertex to the center of the first mounting hole is not less than 150 mm and not more than 180 mm.

[0034] Preferably, the working part is provided with a first vertex, the first connecting part is provided with a first mounting hole and a third side surface, a third angle γ exists between a line from the first vertex to the center of the first mounting hole and the third side surface, and the third angle γ is not less than 130° and not greater than 160°.

[0035] The beneficial effects of adopting the above preferred technical solution are: first, if the bending angle of the deep plowing knife is too small, it is very difficult for the deep plowing knife to enter the soil; however, if the bending angle of the deep plowing knife is too large, the deep plowing knife has a poor soil turning effect. Compared with the bending angle of the existing deep plowing knife, by designing the angle of the third angle γ to be 130°-160°, the deep plowing knife can reduce the rebound force when entering the soil while ensuring the soil turning effect of the deep plowing knife, thereby improving the soil entering ability of the deep plowing knife;

[0036] Secondly, the straight-line distance between the tip of the existing deep plowing knife and the mounting hole is usually greater than 185 mm. Compared with the existing deep plowing knife, the straight-line distance between the first vertex and the first mounting hole is reduced, so that the length of the blade is shortened. Therefore, when the deep plowing knife contacts the ground under high-speed rotation, problems such as blade bouncing, filing, and vibration are greatly reduced, thereby reducing the deformation, damage or even breakage of the deep plowing knife due to the above problems.

[0037] Preferably, the first connecting portion is provided with a third side surface and a fourth side surface, and the distance between the third side surface and the fourth side surface is not less than 25 mm and not more than 35 mm.

[0038] Preferably, the working portion is provided with a first vertex, the first connecting portion is provided with a fourth side surface, and a vertical distance from the first vertex to the fourth side surface is not less than 90 mm and not more than 150 mm.

[0039] Preferably, the working portion is provided with a first vertex, the first connecting portion is provided with a fifth side surface, and a vertical distance from the first vertex to the fifth side surface is not less than 120 mm and not more than 200 mm.

[0040] Preferably, the first working surface and the second working surface, and the third working surface and the fourth working surface are symmetrically arranged on the working part.

[0041] Preferably, the connection between the first working surface and the second working surface, and the connection between the third working surface and the fourth working surface are both smoothly transitioned.

[0042] Preferably, the connection between the second connection part and the working part, and the connection between the second connection part and the first connection part are both smoothly transitioned.

[0043] Preferably, it further comprises a grass chopping part, which is connected to the second connecting part, has a triangular structure, is provided with a cutting edge, and the cutting edge of the grass chopping part faces the same direction as the working part.

[0044] The utility model also provides a crushing device, comprising any one of the above-mentioned deep plowing blades, and also comprising a blade cylinder, wherein the deep plowing blade is connected to the blade cylinder via a first connecting portion, the working portion of the deep plowing blade is provided with a first vertex, and the vertical distance from the first vertex of the deep plowing blade to the axis of the blade cylinder is not less than 175 mm and not more than 195 mm.

[0045] Preferably, along the radial direction of the knife cylinder, the knife cylinder is connected to at least one deep tillage knife.

[0046] Preferably, it also includes a stabilizing mechanism, which is connected to the deep tilling knife.

[0047] Preferably, an anti-entanglement mechanism is further included, and the anti-entanglement mechanism is connected to the stabilizing mechanism.

[0048] Preferably, the vertical distance from the working part of the deep tilling knife to the axis of the knife cylinder is greater than the vertical distance from the anti-entanglement mechanism to the axis of the knife cylinder.

[0049] The beneficial effect of adopting the above-mentioned preferred technical solution is that compared with the existing deep tillage blade, the rotation radius of the deep tillage blade is smaller due to the reduction of the straight-line distance between the first vertex and the axis of the blade barrel, so that the deep tillage blade can be closer to the ground. At the same rotation speed, the working part can cut and crush the soil faster, thereby improving the tillage efficiency, and when the rotation radius of the rotary tillage blade decreases, the required torque will also decrease accordingly, which helps to reduce energy consumption and improve energy utilization efficiency. In addition, the stabilizing mechanism can reduce the jumping of the crushing device when the deep tillage blade is unevenly stressed, and the anti-entanglement device can reduce the entanglement of weeds on the deep tillage blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a front view of the deep tilling knife in the utility model;

[0051] Figure 2 This is a schematic diagram of the structure of the deep tillage knife in the utility model;

[0052] Figure 3 This is a structural schematic diagram of the deep tilling knife in the utility model from another angle;

[0053] Figure 4 for Figure 1 A cross-sectional view of

[0054] Figure 5 It is a top view of the deep tilling knife in the utility model;

[0055] Figure 6 It is a bottom view of the deep tilling knife in the utility model;

[0056] Figure 7 It is a side view of the deep tilling knife in the utility model;

[0057] Figure 8 Schematic diagram of the height H of the first crushing part of the deep tillage knife in the utility model;

[0058] Fig. 9 It is a structural schematic diagram of the crushing device in the utility model.

[0059] As shown in the figure:

[0060] 1. First connecting part, 2. Second connecting part, 3. Working part, 4. First crushing part, 5. Second crushing part, 6. Cutter, 7. Anti-entanglement mechanism, 8. Stabilizing mechanism, 9. Grass-chopping part; 101. Third side surface, 102. Fourth side surface, 103. Fifth side surface, 104. First mounting hole; 201. First side surface, 202. Second side surface, 203. Second mounting hole;

[0061] 301, first working surface, 302, second working surface, 303, third working surface, 304, fourth working surface, 305, fifth working surface, 306, sixth working surface, 307, seventh working surface, 308, eighth working surface, 309, first vertex, 310, second vertex, 311, third vertex. DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0063] Embodiment 1:

[0064] This embodiment provides a Figure 1-8 The deep tillage blade shown in the figure comprises a first connecting part 1, a second connecting part 2, and a working part 3, wherein the first connecting part 1 is connected to the second connecting part 2, and the second connecting part 2 is connected to the working part 3, wherein Figure 5 As shown, the working part 3 includes a first crushing part 4 and a second crushing part 5. The first crushing part 4 is connected to the second crushing part 5, and the second crushing part 5 is connected to the second connecting part 2.

[0065] The working part 3 includes a first working surface 301, a second working surface 302, a third working surface 303, a fourth working surface 304, a fifth working surface 305, a sixth working surface 306, a seventh working surface 307, and an eighth working surface 308.

[0066] Among them, the first working surface 301 and the second working surface 302 are both located on the outside of the working part 3, the third working surface 303 and the fourth working surface 304 are both located on the inside of the working part 3, the fifth working surface 305 is located on the left side of the first crushing part 4, the sixth working surface 306 is located on the right side of the first crushing part 4, the seventh working surface 307 is located on the left side of the second crushing part 5, and the eighth working surface 308 is located on the right side of the second crushing part 5.

[0067] The second connection portion 2 includes a first side surface 201 and a second side surface 202 , wherein the first side surface 201 is located on the inner side of the second connection portion 2 , and the second side surface 202 is located on the outer side of the second connection portion 2 .

[0068] The first connection portion 1 includes a third side surface 101, a fourth side surface 102, and a fifth side surface 103, wherein the third side surface 101 is located at the inner side of the first connection portion 1, the fourth side surface 102 is located at the inner side of the first connection portion 1, and the fifth side surface 103 is located at an end of the first connection portion 1 away from the second connection portion.

[0069] The seventh working surface 307, the eighth working surface 308, the first side surface 201, and the second side surface 202 are all arc-shaped curved surfaces, and the arc radius of the seventh working surface 307 and the eighth working surface 308 is the same.

[0070] The first working surface 301 and the second working surface 302 are both connected to the second side surface 202 , and the third working surface 303 and the fourth working surface 304 are both connected to the first side surface 201 .

[0071] The first working surface 301 is connected to the second working surface 302, the third working surface 303 is connected to the fourth working surface 304, the fifth working surface 305 is connected to the seventh working surface 307, the seventh working surface 307 is connected to the second connecting portion 2, the sixth working surface 306 is connected to the eighth working surface 308, the ground working surface 308 is connected to the second connecting portion 2, the first side surface 201 is connected to the third side surface 101, the second side surface 202 is connected to the fourth side surface 102,

[0072] The connection between the first working surface 301 and the second side surface 202 and the connection between the second working surface 302 and the second side surface 202 are both smooth transitions, the connection between the third working surface 303 and the first side surface 201 and the connection between the fourth working surface 304 and the first side surface 201 are both smooth transitions,

[0073] The connection between the first working surface 301 and the second working surface 302, the connection between the third working surface 303 and the fourth working surface 304, the connection between the second side surface 202 and the fourth side surface 102, the connection between the first side surface 201 and the third side surface 101, the connection between the fifth working surface 305 and the seventh working surface 307, and the connection between the sixth working surface 306 and the eighth working surface 308 are all smooth transitions.

[0074] The first working surface 301 and the second working surface 302, the third working surface 303 and the fourth working surface 304, the fifth working surface 305 and the sixth working surface 306, and the seventh working surface 307 and the eighth working surface 308 are respectively arranged symmetrically on the left and right sides of the working part 3.

[0075] The working portion 3 is provided with a first vertex 309, and the first vertex 309 is located at the farthest end of the connection between the third working surface 303 and the fourth working surface 304 from the second connecting portion 2. A second vertex 310 and a third vertex 311 are respectively provided at the connection between the fifth working surface 305 and the seventh working surface 307 and the connection between the sixth working surface 306 and the eighth working surface 308. The width between the fifth working surface 305 and the sixth working surface 306 gradually increases from the side of the first vertex 309 of the working portion 3 to the side where the working portion 3 is connected to the second connecting portion 2. The first crushing portion 4 can be a triangular structure, a trapezoidal structure or other similar structures with the same function, such as Figure 5 , Figure 6 As shown, in this embodiment, preferably, the first crushing portion 4 is a triangular structure, and the first vertex 309, the second vertex 310, and the third vertex 311 are respectively the three vertices of the triangular structure of the first crushing portion 4. In this embodiment, the first vertex 309 is the tip of the deep plowing knife.

[0076] The second vertex 310 is located at the connection between the fifth working surface 305 and the seventh working surface 307 , and the third vertex 311 is located at the connection between the sixth working surface 306 and the eighth working surface 308 .

[0077] The width between the seventh working surface 307 and the eighth working surface 308 gradually decreases from the first vertex 309 side of the working portion 3 to the side where the working portion 3 is connected to the second connecting portion 2. In this embodiment, the width between the second vertex 310 and the third vertex 311 is the maximum width between the fifth working surface 305 and the sixth working surface 306, which is also the maximum width of the deep plowing blade. The maximum width between the fifth working surface 305 and the sixth working surface 306 is not less than 25 mm and not more than 60 mm.

[0078] The minimum width between the seventh working surface 307 and the eighth working surface 308, the width of the second connecting portion 2, and the width of the first connecting portion 1 are all the same, and the width of the first connecting portion 1 is not less than 10 mm and not more than 60 mm.

[0079] From the end of the first broken part 4 away from the second broken part 5 to the connection between the first broken part 4 and the second broken part 5, the thickness between the inner side and the outer side of the first broken part 4 is a fixed value or gradually increases. In this embodiment, preferably, the thickness between the inner side and the outer side of the first broken part 4 is a fixed value.

[0080] From the connection between the second broken part 5 and the first broken part 4 to the connection between the second broken part 5 and the second connecting part 2, the thickness between the inner side and the outer side of the second broken part 5 gradually increases.

[0081] From the connection point between the second connection part 2 and the working part 3 to the connection point between the second connection part 2 and the first connection part 1, the thickness between the first side surface 201 and the second side surface 202 of the second connection part 2, that is, the thickness of the second connection part 2 gradually increases.

[0082] The maximum thickness of the first broken part 4 is the same as the minimum thickness of the second broken part 5, the maximum thickness of the second broken part 5 is the same as the minimum thickness of the second connecting part 2, and the maximum thickness of the second connecting part 2 is the same as the thickness of the first connecting part 1.

[0083] The distance between the third side surface 101 and the fourth side surface 102, that is, the thickness of the first connecting portion 1 is not less than 25 mm and not more than 35 mm.

[0084] There is a first angle α between the first working surface 301 and the second working surface 302, and the first angle α is less than 180°. From the end of the first crushing part 4 away from the second crushing part 5 to the connection between the first crushing part 4 and the second crushing part 5, the first angle α is a fixed value or gradually increases. In this embodiment, preferably, the first angle α is a fixed value from the end of the first crushing part 4 away from the second crushing part 5 to the connection between the first crushing part 4 and the second crushing part 5.

[0085] From the connection point between the second crushing part 5 and the first crushing part 4 to the side where the second crushing part 5 is connected to the second connecting part 2, the first angle α gradually increases.

[0086] There is a second angle β between the third working surface 303 and the fourth working surface 304, and the second angle β is greater than 180°. From the end of the first crushing part 4 away from the second crushing part 5 to the connection between the first crushing part 4 and the second crushing part 5, the second angle β is a fixed value or gradually decreases. In this embodiment, preferably, the second angle β is a fixed value from the end of the first crushing part 4 away from the second crushing part 5 to the connection between the first crushing part 4 and the second crushing part 5.

[0087] From the connection point between the second crushing part 5 and the first crushing part 4 to the side where the second crushing part 5 is connected to the second connecting part 2, the second angle β gradually decreases.

[0088] The height H of the first crushing part 4 is not less than 4 mm and not more than 12 mm.

[0089] like Figure 1 As shown, a first mounting hole 104 is provided on the first connecting portion 1, and a second mounting hole 203 is provided on the second connecting portion 2. The first mounting hole 104 and the second mounting hole 203 are both used to connect the deep tilling blade with the crushing device.

[0090] There is a third angle γ between the line from the first vertex 309 to the center of the first mounting hole 104 and the third side surface, and the third angle γ is not less than 130° and not more than 160°.

[0091] The vertical distance between the first vertex 309 and the center of the first mounting hole 104 is not less than 150 mm and not more than 180 mm.

[0092] The vertical distance from the first vertex 309 to the fourth side surface 102 is not less than 90 mm and not more than 150 mm.

[0093] The vertical distance from the first vertex 309 to the fifth side surface 103 is not less than 120 mm and not more than 200 mm.

[0094] A grass chopping portion 9 is also connected to the left or right side of the second connecting portion 2. The grass chopping portion 9 is a triangular structure. The width of the grass chopping portion 9 gradually decreases from one end where the grass chopping portion 9 is connected to the second connecting portion 2 to the end where the grass chopping portion 9 is away from the second connecting portion 2. The grass chopping portion 9 is provided with a cutting edge, and the cutting edge of the grass chopping portion 9 and the working portion 3 face in the same direction.

[0095] This embodiment also provides a Figure 8 The crushing device shown includes any of the deep plowing knives described above, and also includes a knife barrel 6 and an anti-entanglement mechanism 7. The deep plowing knife is connected to the knife barrel 6 through the first mounting hole 103 on the first connecting part 1, and the vertical distance from the first vertex 309 of the deep plowing knife to the axis of the knife barrel 6 is not less than 175 mm and not more than 195 mm. At least one deep plowing knife is connected to the knife barrel 6 along the radial direction of the knife barrel 6, and stabilizing mechanisms 8 are respectively provided at both ends of the knife barrel 6. The deep plowing knife is connected to the stabilizing mechanism 8 through the second mounting hole 203 on the second connecting part 2, and the two ends of the anti-entanglement mechanism 7 are respectively connected to the stabilizing mechanisms 8 at the two ends of the knife barrel 6, and the vertical distance from the working part 3 of the deep plowing knife to the axis of the knife barrel 6 is greater than the vertical distance from the anti-entanglement mechanism 7 to the axis of the knife barrel 6.

[0096] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A deep tillage knife, characterized by: The invention comprises a first connecting portion (1), a second connecting portion (2), and a working portion (3), wherein the first connecting portion (1) is connected to the second connecting portion (2), and the second connecting portion (2) is connected to the working portion (3), and the working portion (3) is provided with a first working surface (301), a second working surface (302), a third working surface (303), and a fourth working surface (304), wherein a first angle α exists between the first working surface (301) and the second working surface (302), and a second angle β exists between the third working surface (303) and the fourth working surface (304), wherein the first angle α is less than 180°, and the second angle β is greater than 180°.

2. A deep tilling blade according to claim 1, characterized in that: The working part (3) comprises a first crushing part (4) and a second crushing part (5), the first crushing part (4) is connected to the second crushing part (5), the second crushing part (5) is connected to the second connecting part (2), from the end of the first crushing part (4) away from the second crushing part (5) to the connection between the first crushing part (4) and the second crushing part (5), the first angle α is a fixed value or gradually increases, and from the end of the first crushing part (4) away from the second crushing part (5) to the connection between the first crushing part (4) and the second crushing part (5), the second angle β is a fixed value or gradually decreases.

3. A deep tilling blade according to claim 2, characterized in that: From the connection point between the second crushing part (5) and the first crushing part (4) to the side where the second crushing part (5) and the second connecting part (2) are connected, the first angle α gradually increases.

4. A deep tilling blade according to claim 2, characterized in that: From the connection point between the second crushing part (5) and the first crushing part (4) to the side where the second crushing part (5) and the second connecting part (2) are connected, the second angle β gradually decreases.

5. The deep tilling blade according to claim 2, characterized in that: From one end of the first crushing part (4) away from the second crushing part (5) to the connection between the first crushing part (4) and the second crushing part (5), the thickness of the first crushing part (4) is a fixed value or gradually increases.

6. A deep tilling blade according to claim 2, characterized in that: From the connection point between the second broken part (5) and the first broken part (4) to the connection point between the second broken part (5) and the second connecting part (2), the thickness of the second broken part (5) gradually increases.

7. The deep tilling blade according to claim 1, characterized in that: A fifth working surface (305) and a sixth working surface (306) are respectively provided on both sides of the working portion (3), and the width between the fifth working surface (305) and the sixth working surface (306) gradually increases from a side of the working portion (3) away from the second connecting portion (2) to a side where the working portion (3) is connected to the second connecting portion (2).

8. The deep tilling blade according to claim 7, characterized in that: The maximum width between the fifth working surface (305) and the sixth working surface (306) is not less than 25 mm and not more than 60 mm.

9. The deep tilling blade according to claim 7, characterized in that: The fifth working surface (305) and the sixth working surface (306) are symmetrically arranged on the left and right of the working portion (3).

10. The deep tilling blade according to claim 1, characterized in that: The working portion (3) is provided with a seventh working surface (307) and an eighth working surface (308), and the width between the seventh working surface (307) and the eighth working surface (308) gradually decreases from a side of the working portion (3) away from the second connecting portion (2) to a side where the working portion (3) is connected to the second connecting portion (2).

11. The deep tilling blade according to claim 10, characterized in that: The minimum width between the seventh working surface (307) and the eighth working surface (308), the width of the second connecting portion (2), and the width of the first connecting portion (1) are all the same.

12. The deep tilling blade according to claim 10, characterized in that: The working portion (3) is provided with a fifth working surface (305) and a sixth working surface (306); the fifth working surface (305) is connected to the seventh working surface (307); the sixth working surface (306) is connected to the eighth working surface (308); and the connection between the fifth working surface (305) and the seventh working surface (307) and the connection between the sixth working surface (306) and the eighth working surface (308) are both smooth transitions.

13. The deep tilling blade according to claim 10, characterized in that: The seventh working surface (307) and the eighth working surface (308) are both arc-shaped curved surfaces.

14. The deep tilling blade according to claim 10, characterized in that: The seventh working surface (307) and the eighth working surface (308) are symmetrically arranged on the left and right of the working portion (3).

15. The deep tilling blade according to claim 1, characterized in that: The second connecting portion (2) is provided with a first side surface (201) and a second side surface (202), and the thickness between the first side surface (201) and the second side surface (202) gradually increases from the connection point between the second connecting portion (2) and the working portion (3) to the connection point between the second connecting portion (2) and the first connecting portion (1).

16. The deep tilling blade according to claim 15, characterized in that: The maximum thickness between the first side surface (201) and the second side surface (202) is the same as the thickness of the first connecting portion (1).

17. The deep tilling blade according to claim 15, characterized in that: The first side surface (201) and the second side surface (202) are both arc-shaped curved surfaces.

18. The deep tilling blade according to claim 1, characterized in that: The working part (3) comprises a first crushing part (4), and a height H of the first crushing part (4) is not less than 4 mm and not more than 12 mm.

19. The deep tilling blade according to claim 1, characterized in that: The width of the first connecting portion (1) is not less than 10 mm and not more than 60 mm.

20. The deep tilling blade according to claim 1, characterized in that: The working portion (3) is provided with a first vertex (309), the first connecting portion (1) is provided with a first mounting hole (104), and the straight-line distance from the first vertex (309) to the center of the first mounting hole (104) is not less than 150 mm and not more than 180 mm.

21. The deep tilling blade according to claim 1, characterized in that: The working portion (3) is provided with a first vertex (309), the first connecting portion (1) is provided with a first mounting hole (104) and a third side surface (101), a third angle γ exists between a line between the first vertex (309) and the center of the first mounting hole (104) and the third side surface (101), and the third angle γ is not less than 130° and not greater than 160°.

22. The deep tilling blade according to claim 1, characterized in that: The first connecting portion (1) is provided with a third side surface (101) and a fourth side surface (102), and the distance between the third side surface (101) and the fourth side surface (102) is not less than 25 mm and not more than 35 mm.

23. The deep tilling blade according to claim 1, characterized in that: The working portion (3) is provided with a first vertex (309), the first connecting portion (1) is provided with a fourth side surface (102), and a vertical distance from the first vertex (309) to the fourth side surface (102) is not less than 90 mm and not more than 150 mm.

24. The deep tilling blade according to claim 1, characterized in that: The working portion (3) is provided with a first vertex (309), the first connecting portion (1) is provided with a fifth side surface (103), and a vertical distance from the first vertex (309) to the fifth side surface (103) is not less than 120 mm and not more than 200 mm.

25. The deep tilling blade according to claim 1, characterized in that: The first working surface (301) and the second working surface (302), the third working surface (303) and the fourth working surface (304) are respectively arranged symmetrically on the left and right of the working part (3).

26. The deep tilling blade according to claim 1, characterized in that: The connection between the first working surface (301) and the second working surface (302), and the connection between the third working surface (303) and the fourth working surface (304) are smooth transitions.

27. The deep tilling blade according to claim 1, characterized in that: The connection between the second connection part (2) and the working part (3), and the connection between the second connection part (2) and the first connection part (1) are both smoothly transitioned.

28. The deep tilling blade according to claim 1, characterized in that: It also comprises a grass chopping portion (9), the grass chopping portion (9) being connected to the second connecting portion (2), the grass chopping portion (9) being a triangular structure, the grass chopping portion (9) being provided with a cutting edge, the cutting edge of the grass chopping portion (9) and the working portion (3) facing the same direction.

29. A crushing device, comprising the deep tilling blade according to any one of claims 1 to 28, characterized in that: The invention also comprises a knife barrel (6), wherein the deep tilling knife is connected to the knife barrel (6) via a first connecting portion (1), the working portion (3) of the deep tilling knife is provided with a first vertex (309), and the vertical distance from the first vertex (309) of the deep tilling knife to the axis of the knife barrel (6) is not less than 175 mm and not more than 195 mm.

30. A crushing device according to claim 29, characterized in that: Along the radial direction of the knife cylinder (6), the knife cylinder (6) is connected to at least one deep tilling knife.

31. A crushing device according to claim 29, characterized in that: It also comprises a stabilizing mechanism (8), wherein the stabilizing mechanism (8) is connected to the deep tilling blade.

32. A crushing device according to claim 31, characterized in that: It also comprises an anti-entanglement mechanism (7), wherein the anti-entanglement mechanism (7) is connected to the stabilizing mechanism (8).

33. A crushing device according to claim 32, characterized in that: The vertical distance between the working part (3) of the deep tilling knife and the axis of the knife cylinder (6) is greater than the vertical distance between the anti-entanglement mechanism (7) and the axis of the knife cylinder (6).

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