Multi-blade vertical rotary cultivator

Abstract

The utility model relates to a multi-blade vertical rotary cultivator which comprises a three-point suspension mechanism, a gear box, a rack and a vertical multi-blade rotary tillage assembly. The eight vertical multi-blade rotary tillage assemblies are sequentially arranged below the rack at equal intervals in the transverse direction of the rack, and every two adjacent vertical multi-blade rotary tillage assemblies form a rotary tillage unit; the rotating directions of the cutter shafts of the two vertical multi-blade rotary tillage assemblies in the same group are opposite; the vertical multi-blade rotary tillage assembly comprises a gear, a deep groove ball bearing, a vertical cutter shaft, a rotary cutter head and vertical rotary tillage blades; the vertical cutter shaft is vertically mounted on the rack; the gears are fixedly connected to the top ends of the vertical cutter shafts, and the gears of the adjacent vertical multi-blade rotary tillage assemblies are meshed with each other. The rotary cutter head is fixedly connected to the bottom end of the vertical cutter shaft; and the three vertical rotary tillage blades are uniformly and fixedly connected to the rotary tillage rotary cutter head in the circumferential direction. According to the rotary tillage machine, efficient rotary tillage operation is achieved, the soil breakage rate can be increased, and operation power consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of agricultural machinery, specifically relates to a multi-blade vertical rotary cultivator. BACKGROUND

[0002] Cultivation is an important soil tillage measure before crop sowing, and the rotary cultivator cuts soil and stubble through rotating blades to realize soil loosening and leveling, creating favorable conditions for sowing and subsequent crop growth. Vertical rotary cultivators can reduce soil layer disturbance and are less likely to have missed plowing phenomenon, and have better rotary cultivation effect when cultivating hard soil or deep soil, but current vertical rotary cultivators have problems such as low soil breaking rate, high operating resistance, and high power consumption.

[0003] Chinese invention patent application "CN114766100A", named "Novel vertical rotary plow and vertical rotary cultivator", realizes strip narrow row "narrow on top and wide on bottom" rotary cultivation, can adjust soil structure in the process of plowing, has advantages such as small soil disturbance, and soil and water conservation, and the disadvantage is that the designed deep plowing tool body has large resistance and low operating efficiency.

[0004] Chinese utility model patent application "CN220915694U", named "Vertical rotary cultivator", rotates uniformly through forward rotary cultivator and reverse rotary cultivator arranged at intervals to realize vertical rotary cultivation, which can effectively improve the plowing depth, and the disadvantage is that its operation applicability is low, and the soil breaking rate needs to be improved.

[0005] Therefore, designing a vertical rotary cultivator device with high soil breaking rate and small operating resistance is still a problem in need of further research in the field of agricultural machinery. SUMMARY

[0006] In view of the above technical problems, the utility model aims to provide a multi-blade vertical rotary cultivator, which can realize efficient rotary cultivation, help to improve soil breaking rate, and reduce operating power consumption.

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0008] A multi-blade vertical rotary cultivator comprises a three-point suspension mechanism 1, a gear box 2, a rack 3, and a vertical multi-blade rotary cultivation assembly 4.

[0009] The three-point suspension mechanism 1 and the gear box 2 are fixed to the upper part of the rack 3; the left and right sides of the rack 3 are both fixedly connected with side plates 5, and the rear end is fixedly connected with a rear baffle 6.

[0010] Eight vertical multi-blade rotary tillage assemblies 4 are arranged equidistantly in the transverse direction of the frame 3 below the frame 3, and two adjacent vertical multi-blade rotary tillage assemblies 4 constitute a rotary tillage unit; the rotary directions of the two vertical multi-blade rotary tillage assemblies 4 in the same rotary tillage unit are opposite.

[0011] The vertical multi-blade rotary tillage assembly 4 comprises a gear 401, a deep groove ball bearing 403, a vertical blade shaft 404, a rotary blade disc 405 and a vertical rotary tillage blade 406.

[0012] The vertical blade shaft 404 is vertically installed on the frame 3 through the deep groove ball bearing 403; the gear 401 is fixed on the top end of the vertical blade shaft 404 through a key groove, and the gears 401 of the adjacent vertical multi-blade rotary tillage assemblies 4 are engaged with each other.

[0013] The rotary blade disc 405 is fixed on the bottom end of the vertical blade shaft 404; three vertical rotary tillage blades 406 are uniformly fixed on the rotary tillage rotary blade disc 405 through bolts 407 and nuts 408.

[0014] The vertical rotary tillage blade 406 has a horizontal blade handle part and an inclined blade part, and the horizontal blade handle part and the inclined blade part have a circular arc transition therebetween, and the side end of the inclined blade part is provided with a side cutting edge.

[0015] The input end of the gear box 2 is connected with the power output shaft of the tractor, the output end of the gear box 2 transmits power to the gear 401 of the vertical multi-blade rotary tillage assembly 4, drives the vertical blade shaft 404 to rotate, and realizes rotary tillage operation.

[0016] The interval distance of the adjacent vertical blade shafts 404 is 250-270 mm.

[0017] The radius R0 of the circular arc transition of the vertical rotary tillage blade 406 is 30 mm; the thickness d of the vertical rotary tillage blade 406 is 10-15 mm; the bending angle γ of the inclined blade part with the vertical direction is 5°-15°; the height H of the vertical rotary tillage blade 406 is 250-300 mm; the edge length h of the side cutting edge is 225-280 mm; the length a of the horizontal blade handle part is 60-80 mm, and the width b is 60-70 mm.

[0018] The vertical rotary tillage blades 406 of the two vertical multi-blade rotary tillage assemblies 4 in each rotary tillage unit are arranged alternately.

[0019] The eight vertical multi-blade rotary tillage assemblies 4 are arranged at an equal angle of 30° from left to right with the leftmost vertical multi-blade rotary tillage assembly 4 as the reference.

[0020] The deep groove ball bearing 403 is limited in position on the vertical blade shaft 404 through the retainer 402, effectively preventing the deep groove ball bearing 403 from moving.

[0021] The blade edge curve of the side cutting edge of the vertical rotary tillage blade 406 adopts an Archimedes spiral design; the end point slide cutting angle τ of the blade edge curve of the side cutting edge of the vertical rotary tillage blade 406 is 60°, the polar angle θ at the end point is 44.08°, the Archimedes spiral constant K = 129.87 mm / rad, and the slide cutting angle \tau_n from the blade end to the blade tip is 43°-60°, and the corresponding slide cutting angle variation Δτ = 43°-60°.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] (1) For the need of designing the tillage depth to meet the operation requirements of the vertical rotary tillage machine and reserving the installation size, the vertical rotary tillage blade is optimized in design in terms of the blade shaft length, the blade width, the thickness and other parameters, so as to ensure the sufficient strength and wear resistance;

[0024] The blade edge curve of the vertical rotary tillage blade is designed as an Archimedes spiral, because it has uniform speed and gradually increasing radius in the rotating process, increases the operation depth, reduces the frictional resistance and prevents the tool from being entangled with grass, so as to ensure the stability and efficiency of the tool;

[0025] (2) The whole machine of the rotary tillage machine selects eight blade shafts for operation, and eight vertical multi-blade rotary tillage assemblies are arranged at an equal angle of 30° on the rotary cutter head of the vertical blade shaft. Since the adjacent blade shafts are opposite in direction, the whole machine shows balanced torque in operation, so as to enhance the stability in the operation process;

[0026] (3) Three rotary tillage blades are designed on each blade shaft, and the three vertical rotary tillage blades are installed at an equal angle of 120°, so as to avoid the interference and the phenomenon of missed tillage in the operation process, the soil breaking rate is higher, and the operation efficiency of the vertical rotary tillage machine can be improved to a certain extent by increasing the output power of the tractor. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a three-dimensional structure schematic view of the multi-blade vertical rotary tillage machine of the utility model;

[0028] Figure 2 It is an arrangement schematic view of the vertical multi-blade rotary tillage assembly of the utility model;

[0029] Figure 3 It is an exploded structure schematic view of the vertical multi-blade rotary tillage assembly of the utility model;

[0030] Figure 4 It is a connection section view of the vertical multi-blade rotary tillage assembly and the rack of the utility model;

[0031] Figure 5a It is a side view of the vertical rotary tillage blade 406 of the utility model;

[0032] Figure 5b is a front view of the vertical rotary tillage blade 406 of the utility model;

[0033] Figure 5c is a top view of the vertical rotary tillage blade 406 of the utility model;

[0034] Figure 6 is a blade edge curve schematic view of the vertical rotary tillage blade 406 of the utility model;

[0035] Figure 7 is a power transmission schematic view of the multi-blade vertical rotary tillage machine of the utility model;

[0036] The reference signs therein are:

[0037] 1 three-point suspension mechanism 2 gear box

[0038] 3 frame 4 vertical multi-blade rotary tillage assembly

[0039] 401 gear 402 retainer ring

[0040] 403 deep groove ball bearing 404 vertical blade shaft

[0041] 405 rotary cutterhead 406 vertical rotary tillage blade

[0042] 407 bolt 408 nut

[0043] 5 side plate 6 back baffle DETAILED DESCRIPTION

[0044] The utility model will be further explained in connection with the drawings and examples.

[0045] As Figure 1 shown, the multi-blade vertical rotary tillage machine of the utility model comprises a three-point suspension mechanism 1, a gear box 2, a frame 3 and a vertical multi-blade rotary tillage assembly 4.

[0046] The three-point suspension mechanism 1 and the gear box 2 are fixed to the upper portion of the frame 3; the left and right sides of the frame 3 are both fixedly connected with a side plate 5, and the rear end is fixedly connected with a back baffle 6.

[0047] As Figure 1 and Figure 2 shown, eight vertical multi-blade rotary tillage assemblies 4 are sequentially arranged at equal intervals along the transverse direction of the frame 3 below the frame 3, and two adjacent vertical multi-blade rotary tillage assemblies 4 constitute a rotary tillage unit; the rotary directions of the blade shafts of the two vertical multi-blade rotary tillage assemblies 4 of each rotary tillage unit are opposite.

[0048] As Figure 3As shown, the vertical multi-blade rotary tillage assembly 4 comprises a gear 401, a deep groove ball bearing 403, a vertical blade shaft 404, a rotary blade disc 405 and a vertical rotary tillage blade 406.

[0049] As shown in the figure, Figure 4 the vertical blade shaft 404 is vertically installed on the frame 3 through the deep groove ball bearing 403; the deep groove ball bearing 403 is limited in position on the vertical blade shaft 404 by the retainer 402, effectively preventing the deep groove ball bearing 403 from moving around. The gear 401 is fixed at the top end of the vertical blade shaft 404 through a keyway, and the gears 401 of adjacent vertical multi-blade rotary tillage assemblies 4 are meshed with each other.

[0050] Preferably, the spacing distance between adjacent vertical blade shafts 404 is 250-270 mm.

[0051] The rotary blade disc 405 is fixed at the bottom end of the vertical blade shaft 404; three vertical rotary tillage blades 406 are uniformly fixed on the rotary tillage rotary blade disc 405 in a circumferential direction by bolts 407 and nuts 408; the included angle between adjacent vertical rotary tillage blades 406 is 120°.

[0052] Preferably, the vertical rotary tillage blades 406 of two vertical multi-blade rotary tillage assemblies 4 of each group of rotary tillage units are staggered.

[0053] As shown in the figure, Figure 2 the eight vertical multi-blade rotary tillage assemblies 4 are arranged at equal angles of 30° from left to right, with the leftmost vertical multi-blade rotary tillage assembly 4 as the reference.

[0054] As shown in the figure, Figure 5a the vertical rotary tillage blade 406 has a horizontal blade handle part and an inclined blade edge part, and the horizontal blade handle part and the inclined blade edge part have a circular arc transition therebetween, the radius R0 of the circular arc transition being 30 mm; the thickness d of the vertical rotary tillage blade 406 is 10-15 mm; and the bending angle γ of the inclined blade edge part with the vertical direction is 5°-15°.

[0055] As shown in the figure, Figure 5b the height H of the vertical rotary tillage blade 406 is 250-300 mm; and the side end of the inclined blade edge part is provided with a side cutting edge, and the length h of the side cutting edge is 225-280 mm.

[0056] As shown in the figure, Figure 5c the length a of the horizontal blade handle part is 60-80 mm, and the width b is 60-70 mm.

[0057] Preferably, the cutting edge curve of the side cutting edge of the vertical rotary tiller blade 406 adopts an Archimedean spiral design, which effectively cuts into the soil during rotation, thereby increasing the tillage depth, better meeting the working depth requirements of vertical rotary tillage, and optimizing the performance of the blade.

[0058] exist Figure 6 In the xOy coordinate system, the rotation center of the vertical blade shaft is the origin, the positive x-axis is vertically downward, and the y-axis is consistent with the forward direction of the vertical rotary tiller. n, a', and b' represent the tangent or normal directions, r is the starting radius of the side cutting edge of the vertical rotary tiller blade 406, and R is the rotation radius of the endpoint of the vertical rotary tiller blade 406. The endpoint sliding angle τ of the cutting edge curve of the side cutting edge of the vertical rotary tiller blade 406 is 60°, the polar angle θ at the endpoint is 44.08°, the Archimedes spiral constant K = 129.87 mm / rad, and the sliding angle τ from the blade tip to the blade tip... n The angle is 43° to 60°, and the corresponding change in the sliding angle is Δτ = 43° to 60°.

[0059] like Figure 7 As shown, the input end of the gearbox 2 is connected to the power output shaft of the tractor, and the output end of the gearbox 2 transmits power to the gear 401 of the vertical multi-blade rotary tillage assembly 4, which drives the vertical blade shaft 404 to rotate, thereby realizing rotary tillage operation.

[0060] The operation process of this utility model is as follows:

[0061] When the vertical rotary tiller is working, its front end moves forward under the traction of the tractor via a three-point suspension mechanism 1. Power is first transmitted from the tractor's power take-off shaft to the gearbox 2 through a universal joint. Inside the gearbox 2, the power is reduced in speed and direction by a pair of bevel gears before being transmitted to the gear 401 of the vertical multi-blade rotary tillage assembly 4, driving the vertical cutter shaft 404 to rotate. As the vertical cutter shaft 404 rotates, the vertical rotary tillage blades 406 cut the soil. Because the vertical rotary tillage blades 406 are always in a working state of cutting into the soil, the tillage layer will not become shallow due to excessive speed, avoiding missed tillage. During forward movement and rotation, the vertical rotary tillage blades 406 continuously cut the soil and throw the cut soil clods backward to collide with the rear baffle 6, further breaking up the soil clods before they fall to the ground. The rear baffle 6 then scrapes the ground level, achieving thorough soil breaking and a smooth surface.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-blade vertical rotary cultivator characterized by comprising: The multi-blade vertical rotary cultivator comprises a three-point suspension mechanism (1), a gear box (2), a frame (3) and vertical multi-blade rotary cultivator assemblies (4); The three-point suspension mechanism (1) and the gear box (2) are fixed to the upper part of the frame (3); the left and right sides of the frame (3) are fixedly connected with side plates (5), and the rear end is fixedly connected with a rear baffle (6); Eight vertical multi-blade rotary cultivator assemblies (4) are sequentially arranged at equal intervals in the transverse direction of the frame (3) below the frame (3), and two adjacent vertical multi-blade rotary cultivator assemblies (4) constitute a rotary cultivator unit; the rotating directions of the vertical rotary cultivator blades (406) of the two vertical multi-blade rotary cultivator assemblies (4) in the same group are opposite. The vertical multi-blade rotary cultivator assembly (4) comprises a gear (401), a deep groove ball bearing (403), a vertical blade shaft (404), a rotary blade disc (405) and a vertical rotary cultivator blade (406); The vertical blade shaft (404) is vertically installed on the frame (3) through the deep groove ball bearing (403); the gear (401) is fixedly connected to the top end of the vertical blade shaft (404) through a key groove, and the gears (401) of adjacent vertical multi-blade rotary cultivator assemblies (4) are meshed with each other; The rotary blade disc (405) is fixedly connected to the bottom end of the vertical blade shaft (404); three vertical rotary cultivator blades (406) are uniformly fixedly connected to the rotary cultivator rotary blade disc (405) in the circumferential direction through bolts (407) and nuts (408); The vertical rotary cultivator blade (406) has a horizontal blade handle part and an inclined blade part, and a circular arc transition is formed between the horizontal blade handle part and the inclined blade part; a side cutting edge is formed at the side end of the inclined blade part; The input end of the gear box (2) is connected with the power output shaft of the tractor, the output end of the gear box (2) transmits power to the gear (401) of the vertical multi-blade rotary cultivator assembly (4), drives the vertical blade shaft (404) to rotate, and realizes rotary cultivation.

2. The multi-blade vertical rotary cultivator according to claim 1, characterized by The interval distance of adjacent vertical blade shafts (404) is 250-270 mm.

3. The multi-blade vertical rotary cultivator of claim 1, wherein, The radius R0 of the circular arc transition of the vertical rotary cultivator blade (406) is 30 mm; the thickness d of the vertical rotary cultivator blade (406) is 10-15 mm; the bending angle γ of the inclined blade part with the vertical direction is 5°-15°; the height H of the vertical rotary cultivator blade (406) is 250-300 mm; the blade length h of the side cutting edge is 225-280 mm; the length a of the horizontal blade handle part is 60-80 mm, and the width b is 60-70 mm.

4. The multi-blade vertical tillage machine of claim 1, wherein, The vertical rotary cultivator blades (406) of the two vertical multi-blade rotary cultivator assemblies (4) of each rotary cultivator unit are arranged alternately.

5. The multi-blade vertical tillage machine of claim 1, wherein, The eight vertical multi-blade rotary cultivator assemblies (4) are sequentially arranged at equal angles of 30° from left to right with the leftmost vertical multi-blade rotary cultivator assembly (4) as the reference.

6. The multi-blade vertical tillage machine of claim 1, wherein, The deep groove ball bearing (403) is limited in position on the vertical blade shaft (404) through the retainer (402), effectively preventing the deep groove ball bearing (403) from moving.

7. The multi-blade vertical tillage machine of claim 1, wherein, The blade edge curve of the side cutting edge of the vertical rotary tillage blade (406) adopts an Archimedes spiral design; the end point slide cutting angle τ of the blade edge curve of the side cutting edge of the vertical rotary tillage blade (406) is 60°, the polar angle θ at the terminal point is 44.08°, the Archimedes spiral constant K = 129.87 mm / rad, and the slide cutting angle τ from the blade end to the blade tip is 43°-60°, and the corresponding slide cutting angle change amount Δτ = 43°-60°. n The blade edge curve of the side cutting edge of the vertical rotary tillage blade (406) adopts an Archimedes spiral design; the end point slide cutting angle τ of the blade edge curve of the side cutting edge of the vertical rotary tillage blade (406) is 60°, the polar angle θ at the terminal point is 44.08°, the Archimedes spiral constant K = 129.87 mm / rad, and the slide cutting angle τ from the blade end to the blade tip is 43°-60°, and the corresponding slide cutting angle change amount Δτ = 43°-60°.

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