Anti-winding grass mini-cultivator rotary tiller

Abstract

The utility model discloses a kind of anti-winding grass mini-tiller rotary tillage tools, including knife shaft, tool holder, rotary tillage blade and anti-winding structure, wherein, anti-winding structure includes anti-winding mounting plate, fixing piece, grass cutting blade assembly and linear motion driving mechanism;Anti-winding mounting plate is set on the surface of the knife shaft along the axial direction of the knife shaft;Fixing piece is used to connect and fix the anti-winding mounting plate with the knife shaft;Grass cutting blade assembly is set on the anti-winding mounting plate, the knife edge of the grass cutting blade assembly can be moved along the axial direction of the knife shaft, the center axis of the knife shaft is parallel with the knife edge of the grass cutting blade assembly;Linear motion driving mechanism is connected with the grass cutting blade assembly, for driving the grass cutting blade assembly move along the axial direction of the knife shaft.This anti-winding grass mini-tiller rotary tillage tool, when rotary tillage, can effectively prevent being rice stubble, wheat stubble and other foreign matter winding on the knife shaft.

Description

Technical Field

[0001] This utility model relates to the field of micro-tiller technology, specifically to a rotary tiller blade for an anti-weed-tangling micro-tiller. Background Technology

[0002] The main components of a rotary tiller blade include the blades, the cutter shaft, and the blade holder, among which: The blade is the part that comes into direct contact with the soil, cutting and breaking it up through rotation. Its material and shape directly affect the tillage effect. Common types include ordinary blades, thick blades, and hard-soil blades, with different specifications to suit different operating needs (such as 18-axis, 23-axis, and 32-axis blades).

[0003] The blade shaft, serving as the mounting carrier for the rotary tillers, is driven by the rotation of the tiller body, which in turn drives the blades to work, directly affecting the depth and uniformity of soil tillage. The blade holder (or blade support) is mounted on the blade shaft to fix the blades and ensure their stable rotation.

[0004] The existing rotary tillers have the following problems during use: when tilling at high speed, rice stubble, wheat stubble, weeds, and other debris become tightly wrapped around the blade shaft, preventing it from rotating normally. This forces tillers to frequently stop the machine to remove the entangled material from the rotary tillers, which is both physically demanding and time-consuming, greatly affecting work efficiency. Moreover, the excessive force can also damage the engine. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a rotary tiller blade that is tangle-free and can effectively prevent rice stubble, wheat stubble and other foreign objects from getting tangled on the blade shaft during rotary tillage.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a rotary tiller blade for an anti-tangle micro-tiller, comprising a blade shaft, a blade holder disposed on the blade shaft, and rotary tiller blades disposed on the blade holder, characterized in that it further comprises an anti-tangle structure, the anti-tangle structure comprising: An anti-tangling mounting plate is disposed on the surface of the cutter shaft along the axial direction of the cutter shaft; The fastener is used to connect and fix the anti-entanglement mounting plate to the cutter shaft; A lawn mower blade assembly, disposed on the anti-tangling mounting plate, is movable along the axial direction of the blade shaft, and the blade edge of the lawn mower blade assembly is parallel to the central axis of the blade shaft; and A linear motion drive mechanism, connected to the mowing blade assembly, is used to drive the mowing blade assembly to move along the axial direction of the blade shaft.

[0007] Furthermore, the lawn mower blade assembly includes a connecting plate and a cutting blade. The connecting plate is disposed on the anti-tangling mounting plate. The linear motion drive mechanism is connected to the connecting plate. There are multiple cutting blades, which are spaced apart along the connecting plate and extend radially toward the body of the blade shaft. The plane where the cutting blade is located passes through the central axis of the blade shaft, and the cutting edge of the cutting blade is located on the left and right sides of the cutting blade.

[0008] Furthermore, the linear motion drive mechanism includes a telescopic motor, which is fixed to the anti-tangling mounting plate. The telescopic shaft of the telescopic motor is connected to the connecting plate and is used to drive the connecting plate to move.

[0009] Furthermore, the anti-tangling mounting plate is also provided with a guide groove, and the bottom of the connecting plate is slidably engaged in the guide groove.

[0010] Furthermore, the mowing blade assembly includes a strip blade, the edge of which lies within the axial plane of the blade shaft.

[0011] Furthermore, the fixing component includes ear plates and connecting bolts. Both ends of the anti-tangle mounting plate are provided with ear plates, and the ear plates are connected to the cutter shaft through the connecting bolts.

[0012] The beneficial effects of this utility model are: The aforementioned anti-weed-tangling rotary tiller blades have the following advantages: 1. Achieving Active and Efficient Anti-Tangle: Through a grass-cutting blade assembly mounted on the anti-tangle mounting plate with its blade tip parallel to the central axis of the blade shaft, and a linear motion drive mechanism that propels this assembly along the axial direction of the blade shaft, the blade assembly actively cuts axially when flexible debris such as grass vines or tendrils become entangled in the axial region of the blade shaft. This moving blade acts like a sliding "razor" along the axis, directly cutting through the entangled material, fundamentally changing the passive state of traditional rotary tillers and achieving an active and efficient anti-tangle function.

[0013] 2. Effectively maintains operational continuity: This active cutting mechanism can promptly untangle tangled materials, avoiding situations where equipment is forced to stop for manual cleaning due to accumulated debris. This significantly reduces non-operational time, helping to improve the continuity of micro-tillage operations and overall operational efficiency.

[0014] 3. Protect critical components of the equipment: By effectively preventing the continuous entanglement and accumulation of grass and other debris on the cutter shaft, the potential damage risk to the cutter shaft itself and its connected transmission components caused by the additional load generated by the entanglement (such as increased rotational resistance and severe vibration) is reduced, thereby helping to extend the service life of the entire machine. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 A schematic diagram of a rotary tiller blade for preventing grass entanglement according to an embodiment of the present invention; Figure 2 for Figure 1 A partial schematic diagram at point A in the middle; Figure 3 This is a schematic diagram of the interior of the outer shell of the rotary tiller blades of an anti-weed-tangling micro-tiller provided in two embodiments of this utility model; Figure 4 for Figure 3 A partial schematic diagram at point B in the middle; Figure label: 100, cutter shaft; 200, cutter holder; 300, rotary tiller blade; 400, anti-tangling structure; 410, anti-tangling mounting plate; 411, guide groove; 420, fastener; 430, mowing blade assembly; 431, connecting plate; 432, cutting blade; 440, linear motion drive mechanism. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0018] Example 1: Please see Figure 1 and Figure 2 This utility model provides a rotary tiller blade for an anti-tangle micro-tiller, including a blade shaft 100, a blade holder 200 disposed on the blade shaft 100, rotary tiller blades 300 disposed on the blade holder 200, and an anti-tangle structure 400. The anti-tangle structure 400 includes an anti-tangle mounting plate 410, a fixing member 420, a grass cutting blade assembly 430, and a linear motion drive mechanism 440.

[0019] Specifically, the anti-tangling mounting plate 410 is disposed on the surface of the cutter shaft 100 along the axial direction of the cutter shaft 100. The fixing member 420 is used to connect and fix the anti-tangling mounting plate 410 to the cutter shaft 100. The mower blade assembly 430 is disposed on the anti-tangling mounting plate 410, and the mower blade assembly 430 is movable along the axial direction of the cutter shaft 100, with the blade edge of the mower blade assembly 430 parallel to the central axis of the cutter shaft 100. The linear motion drive mechanism 440 is connected to the mower blade assembly 430 and is used to drive the mower blade assembly 430 to move along the axial direction of the cutter shaft 100.

[0020] When the rotary tiller is performing rotary tillage, if grass vines or tendrils become entangled in the axial area of ​​the blade shaft 100, the linear motion drive mechanism 440 is activated. The blade shaft 100 drives the rotary tillage blades 300 and the entire anti-entanglement structure 400 to rotate at high speed. During rotation, the rotary tillage blades 300 primarily cut and turn the soil, while flexible debris such as grass vines and tendrils easily become entangled in the rotating blade shaft 100. The linear motion drive mechanism 440 drives the mowing blade assembly 430 to move rapidly back and forth along the axial direction of the blade shaft 100. Since the blade direction of the mowing blade assembly 430 is parallel to the central axis of the blade shaft 100, during its axial movement, its sharp blades act like a moving "razor" or "cutter," directly acting on the grass vines and tendrils entangled in the axial area of ​​the blade shaft 100. The moving blades cut or sever the entangled material, preventing it from continuing to accumulate and thus releasing it from the entanglement.

[0021] Using this type of rotary tillage blade has the following advantages: 1. Highly efficient and proactive anti-tangling: Through a special axially moving mowing blade, it can actively and promptly cut off tangled materials, fundamentally solving the problem of passive tangling and accumulation leading to machine downtime in traditional rotary tillers.

[0022] 2. Maintain continuous operation: Avoid frequent shutdowns for cleaning due to tangling, thus improving the efficiency and continuity of micro-tillage operations.

[0023] 3. Protect equipment: Reduce the additional load and potential damage risk to the cutter shaft 100 and transmission components caused by severe entanglement, and extend the service life of the equipment.

[0024] 4. Compact and integrated structure: The anti-entanglement structure 400 is directly integrated into the cutter shaft 100, without taking up too much extra space, making it easy to retrofit or integrate into existing micro-tillers.

[0025] In Example 1: The lawn mowing blade assembly 430 uses a strip blade.

[0026] The cutting edge (i.e., the cutting edge) of the strip-shaped blade is located within the axial plane of the cutter shaft 100. The "axial plane" refers to the plane that includes the central axis of the cutter shaft 100. This means that the strip-shaped blade is mounted vertically on the anti-tangle mounting plate 410, and the plane containing its cutting edge passes through the centerline of the cutter shaft 100.

[0027] During operation, when the linear motion drive mechanism 440 drives the strip blade to move axially, its sharp blade, located in the axial plane, directly cuts the grass vines wrapped around the area near the plane of the blade shaft 100. Because its blade penetrates the entire axial plane, a single movement can clear the entanglement on the plane's path.

[0028] In both embodiments, the linear motion drive mechanism 440 includes a telescopic motor, typically an electric push rod or an electric cylinder. The telescopic motor is fixed on the anti-tangling mounting plate 410, and the telescopic shaft of the telescopic motor is connected to the connecting plate 431 to drive the connecting plate 431 to move.

[0029] During operation, the telescopic motor's telescopic shaft directly pushes or pulls the connecting plate 431, thereby driving the entire mowing blade assembly 430 (connecting plate 431 and multiple cutting blades 432) to move precisely back and forth along the axial direction of the blade shaft 100.

[0030] Based on this, in a further preferred embodiment, the anti-tangling mounting plate 410 is also provided with a guide groove 411. The guide groove 411 can be a T-shaped groove, a dovetail groove, or a rectangular groove, and the bottom of the connecting plate 431 is slidably engaged within the guide groove 411. The bottom or side of the connecting plate 431 is provided with corresponding protrusions or slider structures. The protrusions or sliders at the bottom of the connecting plate 431 are slidably engaged within the guide groove 411.

[0031] When the telescopic motor drives the connecting plate 431 to move axially, the slider at the bottom of the connecting plate 431 slides within the guide groove 411 of the anti-tangling mounting plate 410. The guide groove 411 precisely guides and restricts the movement path of the connecting plate 431, ensuring that the connecting plate 431 and its mowing blade assembly 430 move strictly along the axial direction of the blade shaft 100 without skewing, twisting, or jamming. The guide groove 411 also withstands the radial force or torque that may be generated when the cutting blade 432 is working, protecting the telescopic shaft of the telescopic motor from lateral forces and extending its service life.

[0032] In this embodiment, the fixing member 420 includes ear plates and connecting bolts. Both ends of the anti-entanglement mounting plate 410 are provided with ear plates, and the ear plates are connected to the cutter shaft 100 by connecting bolts.

[0033] During installation, place the anti-tangle mounting plate 410 on the surface of the cutter shaft 100 at the predetermined position, aligning the ear plate with the connection point on the cutter shaft 100. Use connecting bolts passed through the bolt holes in the ear plate and screwed into the threaded holes on the cutter shaft 100, or tighten them with another portion of the ear plate (or nut) on the cutter shaft 100, generating a strong clamping force. Through the ear plates at both ends and the bolts, the anti-tangle mounting plate 410 is tightly pressed or fixed to the surface of the cutter shaft 100. The bolted connection method facilitates the disassembly, maintenance, or replacement of the anti-tangle structure 400.

[0034] Example 2: Please participate Figure 3 and Figure 4 This embodiment provides another, more efficient form of lawn mowing blade assembly 430, which differs from the first embodiment in that: The lawn mower blade assembly 430 includes a connecting plate 431 and a cutting blade 432. The connecting plate 431 is mounted on the anti-tangling mounting plate 410. A linear motion drive mechanism 440 is connected to the connecting plate 431. There are multiple cutting blades 432, which are spaced apart along the connecting plate 431. The main body of the cutting blade 432 extends radially toward the blade shaft 100. The plane on which the cutting blade 432 is located passes through the central axis of the blade shaft 100, and the cutting edge of the cutting blade 432 is located on the left and right sides of the cutting blade 432.

[0035] During operation, the linear motion drive mechanism 440 drives the connecting plate 431 to move axially. The connecting plate 431 drives multiple cutting blades 432 arranged at intervals on it to move synchronously axially. Each cutting blade 432 extends radially, bringing its blade edge closer to or in contact with the possible entanglement area. Since the blade edges of the cutting blades 432 are located on their left and right sides, during axial movement, the blade edges on the left and right sides of the cutting blades 432 can simultaneously cut the entangled material located on the left and right sides of their path.

[0036] The multiple spaced cutting blades 432 are equivalent to setting multiple parallel cutting points along the axial length of the blade shaft 100, which can cover a larger axial area with a single movement and perform multi-line cutting.

[0037] In this method, multiple cutting blades 432 are arranged at intervals, allowing for the clearing of entangled materials over a larger axial length range in a single movement. The double-edged cutting feature ensures that each cutting blade 432 has blades on both sides, enabling cutting from both sides during movement and significantly increasing efficiency. The radially extending cutting blades 432 effectively handle entangled bundles slightly away from the cutter shaft 100 surface. Multiple cutting blades 432 are integrated via a connecting plate 431, resulting in good overall rigidity; the drive mechanism only needs to act on a single point on the connecting plate 431 to move all the blades.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A rotary tiller blade for an anti-weed-tangling micro-tiller, comprising a cutter shaft, a cutter holder disposed on the cutter shaft, and rotary tiller blades disposed on the cutter holder, characterized in that, It also includes an anti-tangle structure, the anti-tangle structure comprising: An anti-tangling mounting plate is disposed on the surface of the cutter shaft along the axial direction of the cutter shaft; The fastener is used to connect and fix the anti-entanglement mounting plate to the cutter shaft; A lawn mower blade assembly, disposed on the anti-tangling mounting plate, is movable along the axial direction of the blade shaft, and the blade edge of the lawn mower blade assembly is parallel to the central axis of the blade shaft; and A linear motion drive mechanism, connected to the mowing blade assembly, is used to drive the mowing blade assembly to move along the axial direction of the blade shaft.

2. The anti-weed-tangling rotary tiller blades according to claim 1, characterized in that, The lawn mowing blade assembly includes a connecting plate and a cutting blade. The connecting plate is disposed on the anti-tangling mounting plate. The linear motion drive mechanism is connected to the connecting plate. There are multiple cutting blades, which are spaced apart along the connecting plate and extend radially toward the main body of the blade shaft. The plane on which the cutting blades are located passes through the central axis of the blade shaft, and the cutting edges of the cutting blades are located on the left and right sides of the cutting blades.

3. The anti-weed-tangling rotary tiller blades according to claim 2, characterized in that, The linear motion drive mechanism includes a telescopic motor, which is fixed to the anti-tangling mounting plate. The telescopic shaft of the telescopic motor is connected to the connecting plate and is used to drive the connecting plate to move.

4. The anti-weed-tangling rotary tiller blades according to claim 3, characterized in that, The anti-tangling mounting plate is also provided with a guide groove, and the bottom of the connecting plate is slidably engaged in the guide groove.

5. The anti-weed-tangling rotary tiller blades according to claim 1, characterized in that, The lawnmower blade assembly includes a strip blade with the cutting edge of the strip blade lying in the axial plane of the blade shaft.

6. The anti-weed-tangling rotary tiller blades according to claim 1, characterized in that, The fixing component includes ear plates and connecting bolts. Both ends of the anti-tangle mounting plate are provided with ear plates, and the ear plates are connected to the cutter shaft through the connecting bolts.

Images