Grass cutting device for rotary cultivator

Abstract

The utility model provides a grass breaking device for a rotary cultivator, and relates to the technical field of rotary cultivators, the grass breaking device comprises a grass breaking device main body, a rotary cultivator cutter shaft and a rotary cultivator rack, the grass breaking device main body comprises a plurality of grass breaking combined cutter heads, a plurality of storage grooves are machined in the rotary cultivator cutter shaft, a plurality of assembly flange rings are machined on the outer wall of the rotary cultivator cutter shaft, and the rotary cultivator cutter shaft is arranged in the storage grooves. The two sides of the assembling flange ring are each provided with two rotary cultivator blades. Strip-shaped grooves are machined in the two cutting knife plates on the grass breaking combined knife head, and limiting pin rods are arranged in the strip-shaped grooves. According to the technical scheme, in the process that the rotary cultivator cutter shaft drives the multiple rotary cultivator blades to rotate, the weed cutting combined cutter head in the rotary cultivator cutter shaft slides in the containing groove under the influence of gravity, weeds can be cut off through cutting edges at the two ends of the cutting knife plate in the process that the weeds are wound around the outer portion of the rotary cultivator cutter shaft, and therefore the weeds can be cut off through the cutting edges at the two ends of the cutting knife plate. On the premise that the ploughing structure of an existing rotary cultivator is not changed, the grass breaking effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary tillers, in particular to a grass cutting device for rotary tillers. Background Art

[0002] Rotary tillers are used in conjunction with tractors to complete the tillage work of plowing and harrowing. They are widely used because of their strong soil crushing ability and flat surface after plowing. During the operation, rotary tillers can cut up the root stubble buried below the surface, which is convenient for the seed drill to operate and provide a good seed bed for later sowing. Rotary tillers are divided into three types according to the configuration of their rotary tillage blade shafts: horizontal axis type, vertical axis type and inclined axis type. Rotary tillers have the functions of breaking the plow bottom layer, restoring the soil tillage layer structure, improving the soil's ability to store water and retain moisture, eliminating some weeds, reducing pests and diseases, leveling the surface, and improving the standard of agricultural mechanization operations.

[0003] The patent document with announcement number CN208708089U discloses a weed cutting device for a rotary tiller, which can adjust the position of the cutting mechanism and the squeezing device by adjusting the length of the telescopic rod, so as to facilitate the cutting of weeds; the weeds can be limited and blocked, and at the same time, the engagement of the cutter with the V-shaped slot is convenient for the cutting of weeds; the pushing of the card plate by the shock absorber can be improved, so as to facilitate the cutting of weeds; the weeds can be combed by the guide rod, so as to facilitate the cutting of the weeds by the cutter; the whole weed cutting device for the rotary tiller has a simple structure, and the height of the cutting mechanism can be adjusted, so as to facilitate the cutting of weeds of different heights, and the weeds can be prevented from damaging the rotary tiller, so as to effectively improve the work efficiency and save time.

[0004] However, in the process of implementing the above technical solution, it is found that the above technical solution has the following technical problems:

[0005] The existing weed cutting device for rotary tillers can adjust the positions of the cutting mechanism and the squeezing device by adjusting the length of the telescopic rod, so as to cut the weeds. However, in actual use, in order to adapt to the cutting work, the weed cutting device changes the structure of the rotary tiller shaft of the traditional rotary tiller, which is not conducive to efficient rotary tillage of the land. Utility Model Content

[0006] In order to overcome the shortcomings of the existing grass cutting device for rotary tillers, which changes the structure of the rotary tiller shaft of the traditional rotary tiller to adapt to the cutting work, and is not conducive to efficient rotary tillage of the land, the embodiment of the present application provides a grass cutting device for a rotary tiller, by arranging a plurality of grass cutting combination cutter heads composed of a pair of cutting blades inside the rotary tiller shaft. When the rotary tiller shaft drives the plurality of rotary tiller blades to rotate, the grass cutting combination cutter heads inside the rotary tiller shaft slide inside the storage groove under the influence of gravity, and control the sliding range of the grass cutting combination cutter heads by means of the cooperation of the limit pin rod and the strip groove. When the weeds are wrapped around the outside of the rotary tiller shaft, the weeds can be cut off by means of the cutting edges at both ends of the cutting blades, which is beneficial to ensure the grass cutting effect without changing the tillage structure of the existing rotary tiller.

[0007] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0008] A grass cutting device for a rotary tiller comprises a grass cutting device body, a rotary tiller blade shaft and a rotary tiller frame, wherein the rotary tiller blade shaft is arranged outside the grass cutting device body;

[0009] The rotary tiller frame is arranged on the top of the rotary tiller blade shaft;

[0010] Among them, the main body of the grass cutting device includes a plurality of grass cutting combination cutter heads, the interior of the rotary tiller blade shaft is processed with a plurality of storage grooves, and the plurality of grass cutting combination cutter heads are respectively slidably connected inside the plurality of storage grooves.

[0011] In a possible implementation, the outer wall of the rotary tiller shaft is processed with multiple assembly flange rings, and two rotary tiller blades are assembled and connected on both sides of the assembly flange ring. The two rotary tiller blades located on one side of the assembly flange ring are symmetrical about the center of the assembly flange ring, and the angle between the two rotary tiller blades located on both sides of the assembly flange ring is a right angle.

[0012] In a possible implementation, the plurality of grass cutting combination cutter heads each include two cutting blades, both ends of the cutting blades are processed with cutting edges, and the two cutting blades on the grass cutting combination cutter head are symmetrically arranged on both sides of the assembly flange ring.

[0013] In a possible implementation, the two cutting blades on the grass cutting combination cutter head are processed with strip grooves inside, and a limit pin is arranged inside the strip groove. The limit pin is pin-connected to the inside of the rotary tiller blade shaft, and the grass cutting combination cutter head is slidably connected to the outside of the limit pin.

[0014] In a possible implementation, the rotary tiller blades on the plurality of mounting flange rings are arranged spirally along the axis of the rotary tiller shaft, and the plurality of grass cutting combination cutter heads are arranged spirally along the axis of the rotary tiller shaft.

[0015] In a possible implementation, the angles between the two cutting blades on the grass cutting combination blade head and the two vertical rotary tiller blades are both 45 degrees.

[0016] In a possible implementation, both ends of the rotary tiller blade shaft are processed with adapter flange rings, a power structure is provided at the bottom of the rotary tiller frame, and the rotary tiller blade shaft is connected to the power structure through the adapter flange ring.

[0017] In summary, the present invention includes at least one of the following beneficial technical effects:

[0018] 1. By arranging a plurality of grass-cutting combined blades consisting of a pair of cutting blades inside the rotary tiller blade shaft, when the rotary tiller blade shaft drives the plurality of rotary tiller blades to rotate, the grass-cutting combined blades inside the rotary tiller blade shaft slide inside the storage groove under the influence of gravity, and the sliding range of the grass-cutting combined blades is controlled by the cooperation of the limit pin rod and the strip groove, and the weeds can be cut off by the cutting edges at both ends of the cutting blades when the weeds are wrapped around the outside of the rotary tiller blade shaft, which is conducive to ensuring the grass-cutting effect without changing the existing tillage structure of the rotary tiller;

[0019] 2. By arranging multiple assembly flange rings with four rotary tiller blades in a spiral manner along the axis of the rotary tiller shaft, the multiple rotary tiller blades are arranged in a spiral shape around the rotary tiller shaft, and the grass cutting combination cutter head arranged inside the storage groove on the rotary tiller shaft is in a state of crossing with the four rotary tiller blades on the assembly flange ring and arranged in a spiral manner along the axis of the rotary tiller shaft, the continuity and effect of the tillage of the land by the multiple rotary tiller blades can be ensured, and structural interference with the multiple grass cutting combination cutter heads can be avoided, thereby ensuring the stable operation of the rotary tiller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the installation position of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the knife shaft of the rotary tiller of the utility model;

[0022] Figure 3 It is a cross-sectional view of the blade shaft of the rotary tiller of the utility model;

[0023] Figure 4 For this utility model Figure 3 Enlarged schematic diagram of part A in the middle.

[0024] Description of the drawings: 1. Rotary tiller frame; 2. Rotary tiller blade shaft; 3. Rotary tiller blade; 4. Grass cutting device body; 401. Grass cutting combination blade head; 402. Limit pin rod; 5. Assembly flange ring; 6. Adapter flange ring; 7. Strip groove; 8. Storage groove. DETAILED DESCRIPTION

[0025] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0026] Embodiment 1:

[0027] This embodiment introduces a specific structure of a grass cutting device for a rotary tiller. Figure 1-Figure 4 As shown, it includes 4, a rotary tiller blade shaft 2 arranged outside the grass cutting device body 4 and a rotary tiller frame 1 arranged on the top of the rotary tiller blade shaft 2, both ends of the rotary tiller blade shaft 2 are processed with adapter flange rings 6, the bottom of the rotary tiller frame 1 is provided with a power structure, the outer wall of the rotary tiller blade shaft 2 is processed with multiple assembly flange rings 5, and two rotary tiller blades 3 are assembled and connected on both sides of the assembly flange ring 5;

[0028] The rotary tiller blade shaft 2 is connected to the power structure through the adapter flange ring 6. When the rotary tiller starts the power structure and drives the rotary tiller blade shaft 2 to work, the rotary tiller blade shaft 2 can drive the four rotary tiller blades 3 mounted on the flange ring 5 to work on the land, thereby making the land soft.

[0029] like Figure 2 and Figure 3 As shown, the grass cutting device body 4 includes a plurality of grass cutting combined blade heads 401, a plurality of storage grooves 8 are processed inside the rotary tiller blade shaft 2, and the plurality of grass cutting combined blade heads 401 each include two cutting blade plates, and the inside of the two cutting blade plates on the grass cutting combined blade heads 401 are processed with strip grooves 7, and the inside of the strip grooves 7 is provided with a limit pin 402;

[0030] The limiting pin rod 402 is pin-connected to the inside of the rotary tiller blade shaft 2, and the two cutting blades on the grass cutting combination blade head 401 are symmetrically arranged on both sides of the mounting flange ring 5. When the rotary tiller blade shaft 2 is driven to drive the plurality of rotary tiller blades 3 to perform tillage work, the plurality of grass cutting combination blade heads 401 arranged inside the rotary tiller blade shaft 2 are respectively slidably connected to the inside of the plurality of storage grooves 8. When the weeds are entangled on the outside of the rotary tiller blade shaft 2, the entangled weeds can be cut off by means of the movable grass cutting combination blade heads 401.

[0031] At the same time, in order to ensure the cutting effect of the grass cutting combination blade 401 on the winding weeds when it moves inside the storage groove 8, Figure 4As shown, both ends of the cutting blade are processed with cutting edges, and the grass cutting combination blade head 401 is slidably connected to the outside of the limiting pin rod 402. When the grass cutting combination blade head 401 slides inside the storage groove 8, the limiting pin rod 402 can cooperate with the grass cutting combination blade head 401 to control the range of movement of the grass cutting combination blade head 401, so that during the rotation of the rotary tiller blade shaft 2, the reciprocatingly sliding grass cutting combination blade head 401 is used to cut the weeds around the outside of the rotary tiller blade shaft 2;

[0032] Secondly, in order to ensure the rotary tillage effect of multiple rotary tiller blades 3 on the land, Figure 1 and Figure 2 As shown, the two rotary tiller blades 3 located on one side of the mounting flange ring 5 are symmetrical about the center of the mounting flange ring 5, the rotary tiller blades 3 located on the multiple mounting flange rings 5 ​​are spirally arranged along the axis of the rotary tiller blade shaft 2, and the angle between the two rotary tiller blades 3 located on both sides of the mounting flange ring 5 is a right angle, which can ensure the continuity of the multiple rotary tiller blades 3 in tilling the land;

[0033] At the same time, in order to ensure the continuity of cutting of the winding weeds by the multiple grass cutting combined blade heads 401, Figure 2 As shown, multiple grass cutting combination cutter heads 401 are arranged spirally along the axis of the rotary tiller shaft 2. By making the angle between the two cutting blades on the grass cutting combination cutter head 401 and the two vertical rotary tiller blades 3 be forty-five degrees, the grass cutting combination cutter head 401 can be prevented from being blocked by the rotary tiller blades 3 during the sliding process inside the storage groove 8.

[0034] Specifically, when the grass cutting device for a rotary tiller is used to perform land rotary tillage work:

[0035] First, the rotary tiller blade shaft 2 is assembled into the interior of the rotary tiller frame 1 by using the adapter flange rings 6 processed to both ends of the rotary tiller blade shaft 2, so that the rotary tiller frame 1 can control the rotary tiller blade shaft 2 through the power structure to drive the four rotary tiller blades 3 assembled on the assembly flange rings 5 ​​to perform tillage work;

[0036] Then, the rotary tiller blade shaft 2 is driven to drive a plurality of rotary tiller blades 3 spirally arranged along the axis of the rotary tiller blade shaft 2 to perform rotary tillage work on the land to ensure the continuity of the cultivated land. In this process, the rotary tillage distance is shortened by means of four rotary tiller blades 3 on an assembly flange ring 5 to ensure the effect of rotary tillage of the land.

[0037] When the rotary tiller blade shaft 2 drives the plurality of rotary tiller blades 3 to rotate, the grass cutting assembly cutter head 401 inside the rotary tiller blade shaft 2 slides inside the storage groove 8 under the influence of gravity, and cooperates with the limiting pin rod 402 pinned to the inside of the rotary tiller blade shaft 2 and the strip grooves 7 of the two cutting blades processed on the grass cutting assembly cutter head 401 to control the sliding range of the grass cutting assembly cutter head 401, so that the weeds can be cut off by the cutting edges at both ends of the cutting blades when the weeds are wrapped around the outside of the rotary tiller blade shaft 2;

[0038] At the same time, the multiple grass cutting combination blades 401 are arranged spirally along the axis of the rotary tiller shaft 2, which can adapt to the multiple rotary tiller blades 3 involved in rotary tillage and avoid structural interference.

[0039] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A grass cutting device for a rotary tiller, characterized in that: include: The grass cutting device body (4); A rotary tiller blade shaft (2), which is arranged outside the grass cutting device body (4); A rotary tiller frame (1), which is arranged on the top of the rotary tiller blade shaft (2); The grass cutting device body (4) comprises a plurality of grass cutting combined blade heads (401), a plurality of storage grooves (8) are machined inside the rotary tiller blade shaft (2), and the plurality of grass cutting combined blade heads (401) are respectively slidably connected inside the plurality of storage grooves (8); The outer wall of the rotary tiller blade shaft (2) is processed with a plurality of mounting flange rings (5), and two rotary tiller blades (3) are assembled and connected on both sides of the mounting flange ring (5); Among them, multiple grass cutting combination blade heads (401) each include two cutting blade plates, both ends of the cutting blade plates are processed with cutting edges, the two cutting blade plates on the grass cutting combination blade head (401) are symmetrically arranged on both sides of the assembly flange ring (5), the inside of the two cutting blade plates on the grass cutting combination blade head (401) are processed with strip grooves (7), and the inside of the strip groove (7) is provided with a limit pin rod (402), the limit pin rod (402) is pin-connected to the inside of the rotary tiller blade shaft (2), and the grass cutting combination blade head (401) is slidably connected to the outside of the limit pin rod (402).

2. A grass cutting device for a rotary tiller according to claim 1, characterized in that: The two rotary tiller blades (3) located on one side of the mounting flange ring (5) are symmetrical about the center of the mounting flange ring (5), and the included angle between the two rotary tiller blades (3) located on both sides of the mounting flange ring (5) is a right angle.

3. A grass cutting device for a rotary tiller as claimed in claim 2, characterized in that: The rotary tiller blades (3) located on the plurality of mounting flange rings (5) are arranged in a spiral arrangement along the axis of the rotary tiller blade shaft (2), and the plurality of grass cutting combination blade heads (401) are arranged in a spiral arrangement along the axis of the rotary tiller blade shaft (2).

4. A grass cutting device for a rotary tiller as claimed in claim 3, characterized in that: The included angles between the two cutting blades on the grass cutting combined blade head (401) and the two rotary tiller blades (3) maintained vertically are both 45 degrees.

5. The grass cutting device for a rotary tiller according to claim 2, characterized in that: Both ends of the rotary tiller blade shaft (2) are processed with adapter flange rings (6), the bottom of the rotary tiller frame (1) is provided with a power structure, and the rotary tiller blade shaft (2) is connected to the power structure via the adapter flange ring (6).

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