A rotary cultivator with easy adjustment
By designing a threaded rod and threaded block adjustment assembly on the rotary tiller, the problem of the inability to adjust the tillage depth of existing rotary tillers has been solved, realizing convenient and efficient tillage depth adjustment and improving the efficiency of rotary tiller use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN BAODIFENG AGRI TECH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-12
AI Technical Summary
Existing rotary tillers cannot effectively adjust the tillage depth, resulting in low efficiency.
An adjustment assembly comprising a threaded rod, a threaded block, a connecting rod, and a vertical rod was designed. The length of the tiller blade is adjusted by threaded connection and rotation to achieve rotary tillage at different depths.
It improves the ease of operation and efficiency of rotary tillers, and allows for adjustment of the blade depth as needed to adapt to different tillage requirements.
Smart Images
Figure CN224343786U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of rotary tillers, and in particular to a rotary tiller that is easy to adjust. Background Technology
[0002] Rotary tillers are tillage machines that work in conjunction with tractors to perform tilling and harrowing operations. They are widely used because of their strong soil-breaking ability and the flat surface they leave after tilling; at the same time, they can chop up the stubble buried below the surface, making it easier for seeders to operate and providing a good seedbed for later sowing.
[0003] Existing rotary tillers cannot effectively adjust the tillage depth, reducing efficiency and hindering user convenience. Therefore, an adjustment mechanism for the length of the tillage blades has been designed to address these issues. Utility Model Content
[0004] The purpose of this invention is to provide an easily adjustable rotary tiller to solve the problems mentioned in the background art.
[0005] The technical solution adopted in this utility model is:
[0006] An easily adjustable rotary tiller includes: a rotating roller rotatably mounted inside a frame and driven to rotate by a motor on the frame; tillage blades mounted on the outer wall of the rotating roller; and an adjustment assembly inside the rotating roller, the adjustment assembly including: a threaded rod with one end inserted into the interior of the rotating roller and rotatably connected to the rotating roller; a threaded block penetrated by the threaded rod and threadedly connected to the threaded rod; a connecting rod with its bottom end rotatably connected to the outer wall of the threaded block; and a vertical rod with its bottom end inserted into the interior of the rotating roller and rotatably connected to the top end of the connecting rod, the top end of the vertical rod being fixedly connected to the bottom end of the tillage blades.
[0007] Optionally, the adjustment assembly further includes a knob fixedly disposed at one end of the threaded rod.
[0008] Optionally, the adjustment component further includes an arrow fixedly disposed on one side of the knob.
[0009] Optionally, the adjustment assembly further includes: a retaining ring sleeved on the outside of the upright and fixedly connected to the outer wall of the rotating roller.
[0010] Optionally, the top of the upright is provided with a fixing component, which further includes: a slot formed on the bottom outer wall of the tiller; a housing rotatably disposed on the top outer wall of the upright; a rectangular shell fixedly disposed on the outer wall of the upright; a spring fixedly disposed inside the rectangular shell; a slider slidably disposed inside the rectangular shell and fixedly connected to the other end of the spring; two ends of a connecting rod rotatably connected to the inner wall of the housing and one end of the slider, respectively; and one end of an insert rod penetrating the inner wall of the upright and inserted into the inner wall of the rectangular shell and fixedly connected to the slider.
[0011] Optionally, the bottom end of the tiller and the inner sidewall of the top end of the pole are both rectangular, and the outer sidewall of the bottom end of the tiller fits against the inner sidewall of the top end of the pole.
[0012] Optionally, one end of the insertion rod is designed with a bevel.
[0013] Optionally, the fixing component further includes a protrusion fixedly disposed on the outer side wall of the housing.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] The adjustment mechanism on this rotary tiller controls the rotation of a threaded rod, which connects to a threaded block. As the threaded rod rotates, the threaded block moves outside the rod, pushing a connecting rod to rotate and causing the upright to extend from inside the rotating roller. This adjusts the length of the tillage blades, allowing for deeper tillage. Compared to existing methods that require individual blade replacement, this method is more convenient and efficient. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this application;
[0018] Figure 2 This is a schematic diagram of the connection between the upright rod and the rotating roller in this application;
[0019] Figure 3 This is a schematic diagram of the structure of the adjustment component in this application;
[0020] Figure 4 This is a schematic diagram of the structure of the fixing component in this application.
[0021] Reference numerals: 11. Frame; 12. Rotating roller; 13. Tiller blade;
[0022] 2. Adjusting assembly; 21. Threaded rod; 22. Threaded block; 23. Connecting rod one; 24. Vertical rod; 25. Knob; 26. Arrow; 27. Retaining ring;
[0023] 3. Fixing component; 31. Slot; 32. Housing; 33. Rectangular shell; 34. Spring; 35. Slider; 36. Connecting rod two; 37. Insert rod; 38. Protrusion. Detailed Implementation
[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] Given that current rotary tillers cannot effectively adjust the tillage depth, their efficiency is reduced, making them unsuitable for user convenience.
[0026] As shown in the attached figures, this embodiment of the invention provides an easily adjustable rotary tiller.
[0027] The device includes: a rotating roller 12 rotatably mounted inside a frame 11 and driven to rotate by a motor on the frame 11; a tiller blade 13 mounted on the outer wall of the rotating roller 12; and an adjusting assembly 2 inside the rotating roller 12, the adjusting assembly 2 including: a threaded rod 21 with one end inserted into the interior of the rotating roller 12 and rotatably connected to the rotating roller 12; a threaded block 22 penetrated by the threaded rod 21 and threadedly connected to the threaded rod 21; a connecting rod 23 with its bottom end rotatably connected to the outer wall of the threaded block 22; and a vertical rod 24 with its bottom end inserted into the interior of the rotating roller 12 and rotatably connected to the top end of the connecting rod 23, and the top end of the vertical rod 24 being fixedly connected to the bottom end of the tiller blade 13.
[0028] Specifically, this device requires a tractor as the drive structure to move the frame 11 in the field (the tractor is existing equipment and is not shown in the attached drawings). During the movement, the motor on the frame 11 drives the rotating roller 12 to rotate via a belt and a pulley (the belt and pulley are located inside the outer shell of the frame 11 and are existing technology, not shown in the attached drawings). While the rotating roller 12 is rotating, the tillage blades 13 can be used to plow the farmland.
[0029] When adjusting the length of the tiller blade 13 (the frame 11 needs to be raised for easier operation during adjustment, and the tiller blade 13 is detached from the soil, so it will not insert into the soil during adjustment), simply grip and rotate the threaded rod 21. During rotation, it connects threadedly with the threaded block 22, driving the threaded block 22 to slide on the outer wall of the threaded rod 21. Simultaneously, the connecting rod 23 can be dragged to rotate. The top of the connecting rod 23 pushes the upright rod 24 out from the inside of the rotating roller 12, simultaneously pushing the tiller blade 13 upwards to adjust its length (simply adjust the added length based on the tillage depth, which is the depth to be adjusted), thus enabling rotary tillage at different depths. This solves the problem of the original tiller blade 13 having a fixed length, where the frame 11 can only contact the ground, preventing the tiller blade 13 from tilling deeper soil.
[0030] In some embodiments, the adjustment assembly 2 further includes a knob 25 fixedly disposed at one end of the threaded rod 21.
[0031] The knob 25 is designed to make it easy to grip and control the rotation of the threaded rod 21, while the groove on the outside of the knob 25 can increase friction when rotating.
[0032] In some embodiments, the adjustment component 2 further includes an arrow 26 fixedly disposed on one side of the knob 25.
[0033] The design of arrow 26 makes it easier to understand the rotation direction of the threaded rod 21, thereby controlling the extension and retraction of the upright rod 24 and adjusting the length of the tiller blade 13.
[0034] In some embodiments, the adjustment assembly 2 further includes a retaining ring 27 sleeved on the outside of the upright 24 and fixedly connected to the outer side wall of the rotating roller 12.
[0035] Specifically, the retaining ring 27 is made of metal, is sleeved on the outside of the upright 24, and is welded to the rotating roller 12.
[0036] The retaining ring 27 is located on the outside of the upright 24, which can scrape off the soil adhering to the surface when the upright 24 retracts, and prevent the soil from entering the interior of the rotating roller 12.
[0037] In some embodiments, a fixing component 3 is provided at the top of the upright 24. The fixing component 3 further includes: a slot 31 formed on the outer side wall of the bottom end of the tiller 13; a housing 32 rotatably disposed on the outer side wall of the top end of the upright 24; a rectangular shell 33 fixedly disposed on the outer side wall of the upright 24; a spring 34 fixedly disposed inside the rectangular shell 33; a slider 35 slidably disposed inside the rectangular shell 33 and fixedly connected to the other end of the spring 34; two ends of a connecting rod 36 are rotatably connected to the inner side wall of the housing 32 and one end of the slider 35, respectively; and one end of an insert rod 37 penetrates the inner side wall of the upright 24 and is inserted into the inner side wall of the rectangular shell 33 and fixedly connected to the slider 35.
[0038] Specifically, the housing 32 is rotatably connected to the upright 24 by setting retaining rings on both the upper and lower parts, with the retaining rings fixedly connected to the upright 24.
[0039] When it is necessary to replace the tiller blade 13, simply grasp the housing 32 and rotate it counterclockwise. During this rotation, the connecting rod 36 will rotate, causing one end of the connecting rod 36 to slide and compress the spring inside the rectangular housing 33. Simultaneously, this pulls the insert rod 37 back into the rectangular housing 33, disengaging it from the slot 31 and releasing the fixation on the bottom of the tiller blade 13. Then, pull the damaged tiller blade 13 out from the top of the upright 24 and insert a new tiller blade into the top of the upright 24. At this point, release the housing 32, and the spring 34 will rebound, pushing the slider 35 to move and insert one end of the insert rod 37 into the slot 31 to fix the tiller blade 13 in place. This completes the replacement of the tiller blade 13. During use, dirt may adhere to the outside of the housing 32. When replacing the tiller blade 13, simply clean the dirt from the outside of the housing 32. Dirt also tends to adhere to the outside of the existing tiller blade 13, which is a common problem in actual use. Because one end of the tiller blade 13 is inserted into the inside of the upright 21, blocking the slot 31, the dirt will not clog the slot 31 and will not affect disassembly or installation. Simply clean the dirt from the surface of the housing 32.
[0040] In some embodiments, the bottom end of the tiller blade 13 and the inner sidewall of the top end of the upright pole 24 are both rectangular, and the outer sidewall of the bottom end of the tiller blade 13 is in contact with the inner sidewall of the top end of the upright pole 24.
[0041] The rectangular design makes it less prone to rotation after insertion, while the close-fitting design prevents it from shaking after installation, keeping it stable.
[0042] In some embodiments, one end of the insertion rod 37 is designed with a bevel.
[0043] The beveled design allows the blade 13 to be inserted directly without rotating the housing 32. When the beveled surface of the insert rod 37 is compressed, it will retract into the interior of the rectangular housing 33. After one end of the insert rod 37 is aligned with the slot 31, the spring 34 rebounds and pushes the slider 35 to move, so that the insert rod 37 is inserted into the slot 31, thus completing the installation of the blade 13.
[0044] In some embodiments, the fixing component 3 further includes a protrusion 38 fixedly disposed on the outer side wall of the housing 32.
[0045] The design of the raised strip 38 increases friction, making it less likely to slip when gripping the housing 32.
[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An easily adjustable rotary tiller, comprising: The frame (11) has a rotating roller (12) rotatably mounted on its inner side, and is driven to rotate by a motor on the frame (11); The tillage blade (13) is disposed on the outer side wall of the rotating roller (12); The characteristic feature is that an adjustment component (2) is provided inside the rotating roller (12), and the adjustment component (2) includes: A threaded rod (21) is inserted into the interior of the rotating roller (12) at one end and is rotatably connected to the rotating roller (12); The threaded block (22) is penetrated by the threaded rod (21) and is threadedly connected to the threaded rod (21); Connecting rod 1 (23) is rotatably connected at its bottom end to the outer wall of the threaded block (22); The bottom end of the upright pole (24) is inserted into the interior of the rotating roller (12) and rotatably connected to the top end of the connecting rod (23), and the top end of the upright pole (24) is fixedly connected to the bottom end of the tillage blade (13).
2. The easily adjustable rotary tiller according to claim 1, characterized in that, The adjustment component (2) further includes: A knob (25) is fixedly mounted on one end of the threaded rod (21).
3. The easily adjustable rotary tiller according to claim 2, characterized in that, The adjustment component (2) further includes: Arrow (26) is fixedly set on one side of the knob (25).
4. The easily adjustable rotary tiller according to claim 1, characterized in that, The adjustment component (2) further includes: The retaining ring (27) is sleeved on the outside of the upright (24) and fixedly connected to the outer wall of the rotating roller (12).
5. The easily adjustable rotary tiller according to claim 1, characterized in that, The top of the upright (24) is provided with a fixing component (3), and the fixing component (3) further includes: A slot (31) is provided on the outer side wall of the bottom end of the tillage blade (13); The housing (32) is rotatably disposed on the outer side wall of the top end of the upright (24); A rectangular shell (33) is fixedly installed on the outer side wall of the upright (24); A spring (34) is fixedly disposed inside the rectangular shell (33); The slider (35) is slidably disposed inside the rectangular shell (33) and fixedly connected to the other end of the spring (34); The second connecting rod (36) is rotatably connected at both ends to the inner sidewall of the housing (32) and one end of the slider (35), respectively; The insertion rod (37) has one end penetrating through the inner wall of the upright rod (24) and is inserted into the inner wall of the rectangular shell (33) and fixedly connected to the slider (35).
6. The easily adjustable rotary tiller according to claim 5, characterized in that, The bottom end of the tiller (13) and the top inner wall of the pole (24) are both rectangular, and the bottom outer wall of the tiller (13) is in contact with the top inner wall of the pole (24).
7. The easily adjustable rotary tiller according to claim 5, characterized in that, One end of the insertion rod (37) is designed with a bevel.
8. The easily adjustable rotary tiller according to claim 5, characterized in that, The fixing component (3) also includes: The protrusion (38) is fixedly disposed on the outer side wall of the housing (32).