Rotary blade structure for rotary cultivator

Abstract

The utility model relates to the technical field of rotary cultivator components, in particular to a rotary blade structure for a rotary cultivator. Comprising a machine frame, a plurality of auxiliary transmission gear boxes installed on the left side of the machine frame at equal intervals through a supporting frame, transmission shafts installed among the auxiliary transmission gear boxes, couplings installed among the transmission shafts and transmission parts arranged between the machine frame and the auxiliary transmission gear boxes. According to the utility model, the rotary blades which are coaxially designed originally are scientifically and rationally improved, the plurality of rotary blades are vertically distributed on the soil, and the plurality of blades are spirally distributed on the cutter shaft, so that the occurrence of the problem that the blades are impacted, deformed and damaged in the working process of the rotary blades is effectively reduced; according to the rotary tillage cutter, the working stability of the rotary tillage cutter is improved, meanwhile, the soil can be comprehensively scattered and smashed, the soil can be fully smashed after single rotary tillage operation, and the efficiency and quality of rotary tillage operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary tiller components, in particular to a rotary tiller blade structure for a rotary tiller. Background Art

[0002] Rotary tillers are tilling machines that work with tractors to complete ploughing and harrowing operations. They are widely used because of their strong soil crushing ability and flat surface after ploughing. They can also cut up the root stubble buried below the surface, making it easier for the seeder to operate and providing a good seed bed for later sowing.

[0003] At present, most of the rotary tillers on the market use a rotary blade structure, whose blade shaft is set parallel to the ground, and multiple blades are evenly distributed on one blade shaft, and the blade under the blade shaft will enter the soil when working to till the soil. Break the soil, however, this rotary blade structure for rotary tillers has the following shortcomings during actual use: first, the blade will penetrate into the soil when the rotary tiller is in working state, which makes it easy for the blade to rotate and hit hard objects in the soil and become deformed or damaged, thereby causing the rotary tiller to work abnormally or the rotary tillage effect to decrease, and the stability of the rotary tillage is poor; secondly, the coaxial rotary tillers have a large spacing between the blades in order to reduce the resistance of traction and drag and the load of equipment operation, which makes it difficult to effectively break the soil after a single rotary tillage operation, and the soil after rotary tillage needs to be further rotary tilled, and the effect of the rotary tillage operation is poor.

[0004] In view of this, it is particularly important to design and manufacture a rotary tiller blade structure with stable operation, non-damage to the blade and excellent rotary tillage effect, and to apply it to rotary tillers. Utility Model Content

[0005] The utility model aims to solve the problems that the traditional rotary tiller blade structure is easy to be damaged by collision with hard objects during operation and the rotary tillage effect is poor, and to propose a rotary tiller blade structure for a rotary tiller.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A rotary tiller structure for a rotary tiller comprises a frame, a plurality of auxiliary transmission gear boxes equidistantly installed on the left side of the frame through a support frame, a transmission shaft installed between the plurality of auxiliary transmission gear boxes, a coupling installed between the transmission shafts and a transmission part arranged between the frame and the auxiliary transmission gear box, wherein the lower end of the frame is equidistantly installed with knife legs corresponding to the positions of the plurality of auxiliary transmission gear boxes, the lower ends of the plurality of knife legs are all installed with plow blades, and the lower ends of the plurality of auxiliary transmission gear boxes are all detachably installed with rotary tillers used in conjunction with the plow blades to improve the crushing effect.

[0008] As a further description of the above technical solution:

[0009] The rotary tiller includes a knife shaft detachably mounted at the lower end of multiple auxiliary transmission gear boxes, multiple knife seats equidistantly fixed on the knife shaft in a spiral distribution, knife arms fixed on the inner sides of both ends of the multiple knife seats, and a bent end integrally fixed at the outermost end of the knife arm and bent downward.

[0010] As a further description of the above technical solution:

[0011] The included angles between two adjacent groups of tool holders are distributed in a range of 5°-15°.

[0012] As a further description of the above technical solution:

[0013] The shape of the knife arm is an arc structure, and the width of the knife arm gradually increases from the innermost end to the outermost end.

[0014] As a further description of the above technical solution:

[0015] The angle between the bent end and the knife arm is set to 120°-150°.

[0016] As a further description of the above technical solution:

[0017] The discharging opening of the coulter is arranged obliquely upward, and the discharging opening of the coulter faces the blade shaft of the rotary tiller.

[0018] As a further description of the above technical solution:

[0019] The transmission part includes a main transmission gearbox installed at the middle of the left end of the frame and transmission-connected to the auxiliary transmission gearbox, a transmission connection box installed at the front end of the frame and used to establish a transmission connection with the tractor, and a universal shaft installed between the main transmission gearbox and the transmission connection box.

[0020] As a further description of the above technical solution:

[0021] A traction frame for establishing a structural connection with a tractor is installed at the upper end of the frame.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0023] In the utility model, the original coaxially designed rotary tiller is scientifically and rationally improved, a plurality of rotary tillers are provided, and the plurality of rotary tillers are vertically distributed on the soil, and the plurality of blades are spirally distributed on the blade shaft. When the plurality of rotary tillers rotate in conjunction, a cutting barrier can be formed behind the plowshare. When the rotary tiller moves on the land, the plowshare turns up the soil on the ground and throws it to the rotary tiller. The rotary tiller can perform multi-directional rotation and crushing processing on the soil, and evenly rotate and throw it onto the ground after rotary tillage. This structure effectively reduces the occurrence of blade impact deformation damage during the operation of the rotary tiller, improves the working stability of the rotary tiller, and at the same time can comprehensively break up and crush the soil. The soil can be fully crushed after a single rotary tillage operation, thereby improving the efficiency and quality of the rotary tillage operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the rotary tiller structure of the utility model installed on the rotary tiller;

[0025] Figure 2 It is a structural schematic diagram of the rotary tiller structure and the plow blade in the utility model;

[0026] Figure 3 It is a partial left rear schematic diagram of the rotary tiller blade structure in the utility model;

[0027] Figure 4 It is a three-dimensional bottom view schematic diagram of the rotary tiller blade structure in the utility model.

[0028] Legend:

[0029] 1. Frame; 101. Traction frame; 2. Support frame; 3. Auxiliary transmission gearbox; 301. Transmission shaft; 4. Coupling; 5. Knife shaft; 501. Knife seat; 502. Knife arm; 503. Bending end; 6. Main transmission gearbox; 601. Transmission connection box; 602. Universal shaft; 7. Knife leg; 701. Plow. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0031] See also Figure 1-4The utility model provides a technical solution: a rotary tiller structure for a rotary tiller, comprising a frame 1, a plurality of auxiliary transmission gear boxes 3 equidistantly installed on the left side of the frame 1 through a support frame 2, a transmission shaft 301 installed between the plurality of auxiliary transmission gear boxes 3, a coupling 4 installed between the transmission shaft 301 and a transmission part arranged between the frame 1 and the auxiliary transmission gear box 3, the lower end of the frame 1 is equidistantly installed with knife legs 7 corresponding to the positions of the plurality of auxiliary transmission gear boxes 3, the lower ends of the plurality of knife legs 7 are all installed with plow blades 701, and the lower ends of the plurality of auxiliary transmission gear boxes 3 are all detachably installed with rotary tillers used in conjunction with the plow blades 701 to improve the crushing effect.

[0032] Specifically, Figure 1-4 As shown, the rotary tiller includes a knife shaft 5 detachably mounted on the lower end of multiple auxiliary transmission gear boxes 3, a plurality of knife seats 501 spirally distributed and equidistantly fixed on the knife shaft 5, a knife arm 502 fixed on the inner sides of both ends of the plurality of knife seats 501, and a bent end 503 integrally fixed to the outermost end of the knife arm 502 and bent downward. When the knife shaft rotates, the knife arm 502 and the bent end 503 can rotate synchronously. The main function of the knife arm 502 is to cut and crush the soil, and the main function of the bent end 503 is to scatter and spin-throw the soil.

[0033] Among them, the angle distribution between two adjacent groups of knife seats 501 is 5°-15°, so that the multiple knife arms 502 can present a regular spiral distribution after installation, and a cutting knife curtain similar to a spiral staircase can be formed between the multiple longitudinal knife arms 502. Under the action of the rotating centrifugal force, the soil can be cut and crushed at multiple levels to ensure that the soil can fully contact the knife arms 502.

[0034] Among them, the shape of the blade arm 502 is an arc-shaped structure, and the width of the blade arm 502 gradually increases from the innermost end to the outermost end. This setting of the blade arm 502 can improve the impact resistance of the blade and the soil cutting effect, while increasing the contact area between the soil and the blade arm 502, so that the soil can fully contact the blade arm 502 and the bent end 503, and the soil can be broken and scattered.

[0035] In addition, the angle between the bent end 503 and the blade arm 502 is set to 120°-150°, which can increase the contact area between the soil and the blade arm 502 when the blade arm 502 rotates, and apply an upward oblique centrifugal force to the soil, thereby fully breaking up and spinning the crushed soil.

[0036] Specifically, Figure 1-4As shown, the discharge port of the plow 701 is set obliquely upward, and the discharge port of the plow 701 is toward the blade shaft 5 of the rotary tiller. This structural setting can pre-transport the turned-up soil obliquely backward to the blade arm 502 on the blade shaft 5, and the multiple spirally distributed blade arms 502 can perform the first step of multi-stage crushing of the soil. The crushed soil can move outward to the bent end 503 of the blade arm 502, and the crushed soil can be further scattered, so that the soil is fully scattered, which is convenient for subsequent crop planting operations.

[0037] Specifically, Figure 1 As shown, the transmission part includes a main transmission gearbox 6 installed in the middle of the left end of the frame 1 and connected to the auxiliary transmission gearbox 3, a transmission connection box 601 installed at the front end of the frame 1 and used to establish a transmission connection with the tractor, and a universal shaft 602 installed between the main transmission gearbox 6 and the transmission connection box 601. After the transmission connection box 601 establishes a transmission connection with the tractor, the universal shaft 602 can be driven to rotate. At this time, the main transmission gearbox 6 can drive multiple coaxial transmission shafts 301 to rotate accordingly, and multiple auxiliary transmission gearboxes 3 will work accordingly, driving the rotary tiller on the rotary tiller to rotate synchronously to break the soil.

[0038] At the same time, a traction frame 101 for establishing a structural connection with the tractor is installed on the upper end of the frame 1, which facilitates the assembly process between the rotary tiller body and the tractor body, and at the same time improves the stability of the rotary tiller and the tractor after assembly.

[0039] Working principle: When in use, the rotary tiller can be installed on the tractor through the traction frame 101, and then the transmission connection box 601 is connected to the transmission part of the tractor to complete the assembly operation between the rotary tiller and the tractor. During actual use, the tractor can drive the universal shaft 602 to rotate, thereby driving multiple auxiliary transmission gear boxes 3 to rotate synchronously through the main transmission gear box 6. At this time, the rotary tilling blades of multiple auxiliary transmission gear boxes 3 can rotate synchronously. When the tractor walks on the ground, the multiple plow blades 701 under the frame 1 can turn the soil to be rotary tilled obliquely upward onto the ground, and transport it obliquely upward to the rotating rotary tilling blade. When the multiple spirally distributed knife arms 502 on the knife shaft 5 contact the soil, the soil can be crushed. When the crushed soil contacts the rotating bending end 503, the crushed soil can be further scattered. The soil after comprehensive rotary tillage can be evenly thrown backward onto the ground after rotary tillage under the centrifugal action of the rotary tilling blade.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotary tiller blade structure for a rotary tiller, comprising a frame (1), a plurality of auxiliary transmission gear boxes (3) equidistantly mounted on the left side of the frame (1) via a support frame (2), a transmission shaft (301) mounted between the plurality of auxiliary transmission gear boxes (3), a coupling (4) mounted between the transmission shafts (301), and a transmission part arranged between the frame (1) and the auxiliary transmission gear boxes (3), characterized in that: The lower end of the frame (1) is equidistantly mounted with knife legs (7) corresponding to the positions of the plurality of auxiliary transmission gear boxes (3); the lower ends of the plurality of knife legs (7) are all mounted with plowshares (701); and the lower ends of the plurality of auxiliary transmission gear boxes (3) are all detachably mounted with rotary tillers used in conjunction with the plowshares (701) to enhance the crushing effect.

2. A rotary tiller blade structure for a rotary tiller according to claim 1, characterized in that: The rotary tiller comprises a knife shaft (5) detachably mounted on the lower ends of a plurality of auxiliary transmission gear boxes (3), a plurality of knife seats (501) equidistantly fixed on the knife shaft (5) in a spiral arrangement, a knife arm (502) fixed to the inner sides of both ends of the plurality of knife seats (501), and a bent end (503) integrally fixed to the outermost end of the knife arm (502) and bent downward.

3. A rotary tiller blade structure for a rotary tiller according to claim 2, characterized in that: The included angle between two adjacent groups of tool holders (501) of the plurality of groups of tool holders (501) is distributed in the range of 5°-15°.

4. The rotary tiller blade structure for a rotary tiller according to claim 2, characterized in that: The shape of the knife arm (502) is an arc-shaped structure, and the width of the knife arm (502) gradually increases from the innermost end to the outermost end.

5. The rotary tiller blade structure for a rotary tiller according to claim 2, characterized in that: The angle between the bent end (503) and the knife arm (502) is set to 120°-150°.

6. The rotary tiller blade structure for a rotary tiller according to claim 2, characterized in that: The material discharge opening of the plowshare (701) is arranged obliquely upward, and the material discharge opening of the plowshare (701) faces the blade shaft (5) of the rotary tiller.

7. The rotary tiller blade structure for a rotary tiller according to claim 1, characterized in that: The transmission unit comprises a main transmission gearbox (6) installed at the middle of the left end of the frame (1) and transmission-connected to the auxiliary transmission gearbox (3), a transmission connection box (601) installed at the front end of the frame (1) and used to establish a transmission connection with the tractor, and a universal shaft (602) installed between the main transmission gearbox (6) and the transmission connection box (601).

8. The rotary tiller blade structure for a rotary tiller according to claim 1, characterized in that: A traction frame (101) for establishing a structural connection with a tractor is installed at the upper end of the frame (1).

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