A four-wheel drive mini-tiller applied to various working environments

Abstract

The present application relates to the technical field of micro tiller, in particular to a four-wheel drive micro tiller applied to various working environments; comprising a machine body; a roller and a wheel are installed on both sides of the machine body; the roller is located at the front end of the machine body; the wheel is located at the rear end of the machine body; a handle is fixedly connected to the upper end of the machine body; a mounting bracket is rotatably connected to the upper end of the machine body; a hydraulic push rod is arranged between the mounting bracket and the machine body; the mounting bracket is provided, the hydraulic push rod drives the mounting bracket to rotate at the upper end of the machine body, the mounting bracket drives the driving motor to rotate synchronously, the center of gravity of the mounting bracket and the driving motor at the upper end of the machine body is offset, thereby effectively reducing the center of gravity height of the four-wheel drive micro tiller when working on a hill, greatly reducing the risk of rollover of the four-wheel drive micro tiller caused by gravity offset, ensuring the stability of the four-wheel drive micro tiller in hill working, and further expanding the working environment adaptability of the four-wheel drive micro tiller and improving the practical application range of the present application.

Description

Technical Field

[0001] This invention relates to the field of micro-tiller technology, specifically a four-wheel drive micro-tiller applicable to various working environments. Background Technology

[0002] A mini tiller typically consists of components such as an engine, rotor, transmission system, walking system, and control system. The engine provides power, the rotor performs the tilling work, the transmission system transmits the engine's power to the rotor, the walking system drives the mini tiller forward or backward, and the control system controls the operation of the mini tiller.

[0003] Based on the different drive methods, existing micro-tillers can be divided into two types: two-wheel drive micro-tillers and four-wheel drive micro-tillers. Among them, four-wheel drive micro-tillers refer to machines with four drive wheels, which gives them a significant advantage in terms of traction and stability, especially when working in plains or large fields, where they can provide stronger traction and stability.

[0004] Although four-wheel drive tillers have strong driving capabilities and are suitable for driving and working in complex terrain, their overall weight is relatively large due to the four-wheel drive system. This becomes a disadvantage when working on slopes, because the terrain of hillsides is complex and undulating, and the working environment is relatively harsh. On steep slopes, four-wheel drive tillers with a high center of gravity are prone to tipping over due to gravity shift, increasing the safety risks of four-wheel drive tillers working on hillsides.

[0005] In view of this, in order to overcome the above-mentioned technical problems, the present invention proposes a four-wheel drive micro-tiller applicable to various working environments, thus solving the above-mentioned technical problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention proposes a four-wheel drive mini-tiller applicable to various working environments. By setting up a mounting frame, a hydraulic push rod is controlled to rotate the mounting frame at the upper end of the machine body. This causes the mounting frame to drive the drive motor to rotate synchronously, resulting in a shift in the center of gravity between the mounting frame and the drive motor at the upper end of the machine body. This effectively reduces the center of gravity height of the four-wheel drive mini-tiller when working on slopes, significantly reducing the risk of tipping over due to gravity shift, ensuring the stability of the four-wheel drive mini-tiller on slopes, and thus expanding the adaptability of the four-wheel drive mini-tiller to various working environments, improving the practical application scope of this invention.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A four-wheel drive micro-tiller applicable to various working environments, comprising a body; swivel wheels and wheels are installed on both sides of the body; the swivel wheels are located at the front end of the body; the wheels are located at the rear end of the body; a handlebar is fixedly connected to the upper end of the body; a mounting frame is rotatably connected to the upper end of the body; a hydraulic push rod is provided between the mounting frame and the body; one end of the hydraulic push rod is rotatably connected to the body, and the other end is rotatably connected to the mounting frame; a drive motor is fixedly installed inside the mounting frame; the drive... A connecting gear is fixedly connected to the output end of the motor; two cavities are opened inside the machine body; a first bevel gear ring and a second bevel gear ring are arranged inside the two cavities; the first bevel gear ring is fixedly connected to the wheel axle of the turning wheel; the second bevel gear ring is fixedly connected to the wheel axle of the wheel; a bevel gear shaft is rotatably connected to the lower end of the machine body; the two ends of the bevel gear shaft mesh with the first bevel gear ring and the second bevel gear ring respectively; a spur gear is fixedly connected to the surface of the bevel gear shaft; the spur gear meshes with the connecting gear through a transmission gear; the transmission gear is rotatably connected to the machine body.

[0008] Preferably, support wheels are provided on both sides of the machine body; a support rod is fixedly connected to one end of the support wheel near the machine body; the support rod is rotatably connected to the machine body through a torsion spring; and the support rod is connected to the drive motor through a tension unit.

[0009] Preferably, the tensioning unit includes a steel wire rope; the output end of the drive motor has a rectangular groove; a connecting rod is slidably connected in the rectangular groove; the connecting rod is connected to the bottom of the rectangular groove by a connecting spring; an electromagnetic plate is embedded in the bottom of the rectangular groove; a rotating ring is sleeved on the surface of the connecting rod; the rotating ring is rotatably connected to the mounting bracket; one end of the steel wire rope is connected to a support rod, and the other end is connected to the rotating ring; a slot that mates with the connecting rod is formed on the surface of the connecting gear; a protrusion is fixedly connected to the surface of the connecting rod; and a groove that mates with the protrusion is formed on the surface of the rotating ring.

[0010] Preferably, the upper end of the body is provided with a mounting groove; a protective shell is installed in the mounting groove.

[0011] Preferably, the turning wheel includes a wheel body and a turning cutter; a circular groove is formed on the surface of the wheel body; a mounting post is rotatably connected in the circular groove; the mounting post is fixedly connected to the turning cutter; a groove is formed inside the wheel body; a worm gear is disposed in the groove; the worm gear is fixedly connected to the mounting post; a worm is rotatably connected to one side of the wheel body; the worm gear meshes with the worm gear.

[0012] Preferably, a driving gear is rotatably connected to one side of the wheel body; a driven gear is slidably connected to the surface of the worm; the driving gear and the driven gear mesh; a fixed spring is sleeved on the surface of the worm; one end of the fixed spring is connected to the worm, and the other end is connected to the driven gear; an electromagnetic ring is embedded on the surface of the wheel body.

[0013] Preferably, a cover plate is installed on one side of the wheel body; both the cover plate and the protective shell are coated with a PTFE material coating.

[0014] Preferably, a rubber block is fixedly connected to the lower end of the turning blade; the rubber block is made of fluororubber material.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention, by setting up a mounting frame, controls a hydraulic push rod to push the mounting frame to rotate at the upper end of the machine body, causing the mounting frame to drive the drive motor to rotate synchronously. This causes the center of gravity of the mounting frame and drive motor at the upper end of the machine body to shift, thereby effectively reducing the center of gravity height of the four-wheel drive mini-tiller when working on hillsides. This greatly reduces the risk of the four-wheel drive mini-tiller tipping over due to gravity shift, ensures the stability of the four-wheel drive mini-tiller when working on slopes, and further expands the adaptability of the four-wheel drive mini-tiller to the working environment, thus improving the practical application scope of this invention.

[0017] 2. This invention, by incorporating a worm gear and a worm shaft, allows the user to drive the worm gear to rotate by rotating the worm shaft. The worm gear, through a connected mounting post, drives the turning blade to rotate, thereby adjusting the turning blade's tilt angle. This allows the turned blade, after adjusting the tilt angle, to effectively work on farmland with different soil conditions, eliminating the need for direct worm gear replacement. This not only reduces the production cost of worm gear replacement but also shortens the time required for disassembly and replacement, reducing the operator's labor intensity and improving the efficiency of farmland operations. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a schematic diagram of the transmission of the turner used in this invention;

[0023] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0024] In the diagram: 1. Body; 11. Turning wheel; 111. Wheel body; 112. Turning cutter; 113. Circular groove; 114. Mounting post; 115. Groove; 116. Worm gear; 117. Worm; 12. Wheel; 13. Handlebar; 14. Hydraulic push rod; 15. Cavity; 151. First bevel gear ring; 152. Second bevel gear ring; 153. Bevel gear shaft; 154. Spur gear; 155. Transmission gear; 16. Support wheel; 161. Support 162. Support rod; 17. Wire rope; 171. Mounting slot; 171. Protective shell; 2. Mounting bracket; 21. Drive motor; 22. Connecting gear; 221. Slot; 23. Rectangular slot; 231. Connecting rod; 232. Connecting spring; 233. Electromagnetic plate; 234. Protrusion; 24. Rotary ring; 241. Slot; 3. Drive gear; 31. Driven gear; 32. Fixed spring; 33. Electromagnetic ring; 34. Cover plate; 35. Rubber block. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] like Figures 1 to 5 As shown, the present invention discloses a four-wheel drive micro-tiller applicable to various working environments, comprising a body 1; swivel wheels 11 and wheels 12 are mounted on both sides of the body 1; the swivel wheels 11 are located at the front end of the body 1; the wheels 12 are located at the rear end of the body 1; a handlebar 13 is fixedly connected to the upper end of the body 1; a mounting frame 2 is rotatably connected to the upper end of the body 1; a hydraulic push rod 14 is provided between the mounting frame 2 and the body 1; one end of the hydraulic push rod 14 is rotatably connected to the body 1, and the other end is rotatably connected to the mounting frame 2; a drive motor 21 is fixedly installed inside the mounting frame 2; a connecting gear 22 is fixedly connected to the output end of the drive motor 21; the machine... The body 1 has two cavities 15 inside; a first bevel gear ring 151 and a second bevel gear ring 152 are arranged inside the two cavities 15; the first bevel gear ring 151 is fixedly connected to the axle of the turning wheel 11; the second bevel gear ring 152 is fixedly connected to the axle of the wheel 12; a bevel gear shaft 153 is rotatably connected to the lower end of the body 1; the two ends of the bevel gear shaft 153 are respectively engaged with the first bevel gear ring 151 and the second bevel gear ring 152; a spur gear 154 is fixedly connected to the surface of the bevel gear shaft 153; the spur gear 154 is engaged with the connecting gear 22 through a transmission gear 155; the transmission gear 155 is rotatably connected to the body 1.

[0027] In one embodiment of the present invention, support wheels 16 are provided on both sides of the body 1; a support rod 161 is fixedly connected to one end of the support wheel 16 near the body 1; the support rod 161 is rotatably connected to the body 1 through a torsion spring; the support rod 161 is connected to the drive motor 21 through a tension unit.

[0028] In one embodiment of the present invention, the tensioning unit includes a steel wire rope 162; a rectangular groove 23 is provided at the output end of the drive motor 21; a connecting rod 231 is slidably connected in the rectangular groove 23; the connecting rod 231 is connected to the bottom of the rectangular groove 23 by a connecting spring 232; an electromagnetic plate 233 is embedded in the bottom of the rectangular groove 23; a rotating ring 24 is sleeved on the surface of the connecting rod 231; the rotating ring 24 is rotatably connected to the mounting frame 2; one end of the steel wire rope 162 is connected to the support rod 161, and the other end is connected to the rotating ring 24; a slot 221 that mates with the connecting rod 231 is provided on the surface of the connecting gear 22; a protrusion 234 is fixedly connected to the surface of the connecting rod 231; and a groove 241 that mates with the protrusion 234 is provided on the surface of the rotating ring 24.

[0029] In one embodiment of the present invention, the upper end of the body 1 is provided with a mounting groove 17; a protective shell 171 is installed in the mounting groove 17.

[0030] While existing four-wheel drive mini-tillers possess strong driving capabilities and are suitable for driving and working in complex terrain, their overall weight is relatively large due to the four-wheel drive system. This becomes a disadvantage when working on slopes, because the terrain of hillsides is complex and undulating, and the working environment is relatively harsh. On steep slopes, four-wheel drive mini-tillers with a high center of gravity are prone to tipping over due to gravity shift, increasing the safety risks of four-wheel drive mini-tillers working on hillsides.

[0031] To address this issue, the present invention provides a mounting frame 2. A hydraulic push rod 14 pushes the mounting frame 2 to rotate at the upper end of the machine body 1, causing the mounting frame 2 to drive the drive motor 21 to rotate synchronously. This shifts the center of gravity of the mounting frame 2 and the drive motor 21 at the upper end of the machine body 1, effectively reducing the center of gravity height of the four-wheel drive tiller when operating on slopes. This significantly reduces the risk of the four-wheel drive tiller tipping over due to gravity shift, ensuring the stability of the four-wheel drive tiller on slopes. Furthermore, it expands the adaptability of the four-wheel drive tiller to different operating environments and improves the practical application scope of the invention.

[0032] When in use, a controller is installed at the handlebar 13. The controller is used to control the operation of electric components such as drive motor 21 and hydraulic push rod 14. When the user pushes the machine body 1 to the hillside through the handlebar 13, the machine body 1 located on the hillside is tilted because the hillside is sloping. At this time, the projection of the center of gravity of the machine body 1 will be biased towards the lower slope side. If the projection of this center of gravity exceeds the outer edge of the support wheel 16, the micro-tiller will tip over.

[0033] The user can only support the machine body 1, which is shifted in center of gravity, through the handlebars 13 to prevent the machine body 1 from tipping over due to the shift in center of gravity. At this time, the user only needs to control the operation of the two hydraulic push rods 14, so that the lower hydraulic push rod 14 extends and the higher hydraulic push rod 14 retracts. This causes the two hydraulic push rods 14 to push the mounting frame 2 to rotate relative to the machine body 1. The rotating mounting frame 2 drives the drive motor 21 to rotate, causing the drive motor 21 to deflect towards the side of the machine body 1 that is tilted upward. This makes the center of gravity of the drive motor 21 closer to the side of the machine body 1 that is tilted upward, thus shifting the center of gravity towards the higher slope side. On the one hand, this reduces the original center of gravity shift towards the lower slope side, increases the lateral stability of the tiller, and prevents the projection of the center of gravity from exceeding the boundary of the support wheel 16, thereby avoiding tipping over. On the other hand, the center of gravity being slightly shifted towards the higher slope side can enhance the machine body 1's resistance to lateral forces on the slope, avoid excessive tilting, and further reduce the risk of tipping over.

[0034] During the rotation of the mounting bracket 2, the mounting bracket 2 drives the drive motor 21 to rotate synchronously. Since the transmission gear 155 is rotatably connected to the mounting bracket 2, the drive motor 21 and the connecting gear 22 can rotate synchronously under the drive of the mounting bracket 2. Because the cross-sectional shape of the mounting bracket 2 is annular, and the mounting bracket 2 and the transmission gear 155 are on the same axis, the rotating mounting bracket 2 rotates around the transmission gear 155. At this time, the mounting bracket 2 drives the connecting gear 22 to rotate circumferentially relative to the transmission gear 155, meaning the transmission gear 155 and the connecting gear 22 are always in a meshing state. When the drive motor 21 deflects to the designated position, the drive motor 21 is controlled to run, allowing the drive motor 21 to drive the connecting gear 22 to rotate via the connecting rod 231. This allows the connecting gear 22 to drive the meshing transmission gear 155 to rotate synchronously. 5 meshes with spur gear 154, enabling the rotating transmission gear 155 to drive spur gear 154 to rotate. This causes spur gear 154 to drive the bevel gear shaft 153, which is fixed to it, to rotate. The rotating bevel gear shaft 153 then drives the first bevel gear ring 151 and the second bevel gear ring 152, which are meshed at both ends, to rotate synchronously. This causes the first bevel gear ring 151 and the second bevel gear ring 152 to drive the wheel 12 and the turner 11 connected to them to rotate, respectively. Since the first bevel gear ring 151 has fewer teeth than the second bevel gear ring 152, the rotational speed of the first bevel gear ring 151 driven by the bevel gear shaft 153 is faster than that of the second bevel gear ring 152. As the second bevel gear ring 152 drives the machine body 1 to move through the wheel 12, the first bevel gear ring 151, which is close to the handlebar 13, can quickly drive the turner 11 to effectively cultivate the hillside.

[0035] To further lower the center of gravity of the body 1, this invention incorporates support wheels 16. During the rotation of the mounting bracket 2 driven by the hydraulic push rod 14, the user controls the electromagnetic plate 233 to be energized. This causes the electromagnetic plate 233 to attract the connecting rod 231, compressing the connecting spring 232 into the rectangular groove 23. The connecting rod 231 then extends out of the slot 221. As the connecting rod 231 continues to enter the rectangular groove 23, it drives the surface-fixed protrusion 234 closer to the rotating ring 24 until the connecting rod 231 separates from the connecting gear 22. At this point, the connecting rod 231 drives the protrusion 234 to contact the rotating ring 24, controlling the drive motor 21 to operate. 21 can drive the connecting rod 231 to rotate, so that the connecting rod 231 can drive the protrusion 234 fixed to the surface to rotate synchronously, so that the protrusion 234 slides into contact with the rotating ring 24 on one side until the rotating protrusion 234 is directly opposite the slot 241. At this time, the protrusion 234 is no longer blocked by the rotating ring 24, so that the connecting rod 231 attracted by the electromagnetic plate 233 continues to squeeze the connecting spring 232 into the rectangular slot 23, so that the connecting rod 231 drives the protrusion 234 on the surface to engage with the slot 241 on the side wall of the rotating ring 24, so that the connecting rod 231 is engaged with the rotating ring 24 through the protrusion 234, and continues to control the operation of the drive motor 21, so that the drive motor 21 can drive The moving connecting rod 231 drives the protrusion 234 to rotate, causing the connecting rod 231 to push the groove wall of the slot 241 through the protrusion 234, thereby driving the rotating ring 24 to rotate. Since the rotating ring 24 is connected to the support wheel 16 by a steel wire rope 162, the rotating ring 24 can pull the steel wire rope 162 fixed to its surface to wind around its surface during rotation. This causes the steel wire rope 162 wound around the surface of the rotating ring 24 to pull the support wheel 16 connected to its other end to rotate downward. Since the support wheel 16 is rotatably connected to the machine body 1 by a torsion spring, the support wheel 16 pulled by the steel wire rope 162 can overcome the torsion force of the torsion spring and rotate downward, allowing the support wheels 16 on both sides of the machine body 1 to rotate downward. When the tiller is in contact with the ground on the slope, the support wheel 16 on the downhill side can share the lateral load and play a "stabilizing" role, preventing the machine body 1 from tipping over further. In addition, the support wheel 16 is made of fluororubber, which not only gives it a certain degree of elasticity, preventing it from interfering with the drive of the wheel 12, but also gives it good wear resistance, thus improving its service life. Furthermore, when the support wheel 16 rotates downward to contact the ground, its center of gravity drops, which reduces the risk of the four-wheel drive tiller tipping over due to gravity shift, thereby improving the stability of the four-wheel drive tiller when working on slopes.

[0036] The protective shell 171 is designed to protect the mounting frame 2, preventing soil and gravel from splashing onto the upper part of the machine body 1 during tillage. It also prevents soil and gravel from falling between the transmission gear 155, the connecting gear 22, and the spur gear 154. This not only prevents soil and gravel from clogging the meshing gaps of the transmission gear 155, the connecting gear 22, and the spur gear 154, but also prevents soil and gravel from causing wear to the transmission gear 155, the connecting gear 22, and the spur gear 154, thereby improving the service life and transmission efficiency of the transmission gear 155, the connecting gear 22, and the spur gear 154.

[0037] In one embodiment of the present invention, the turning wheel 11 includes a wheel body 111 and a turning cutter 112; a circular groove 113 is formed on the surface of the wheel body 111; a mounting post 114 is rotatably connected in the circular groove 113; the mounting post 114 is fixedly connected to the turning cutter 112; a groove 115 is formed inside the wheel body 111; a worm gear 116 is disposed in the groove 115; the worm gear 116 is fixedly connected to the mounting post 114; a worm 117 is rotatably connected to one side of the wheel body 111; the worm 117 meshes with the worm gear 116.

[0038] In one embodiment of the present invention, a drive gear 3 is rotatably connected to one side of the wheel body 111; a driven gear 31 is slidably connected to the surface of the worm 117; the drive gear 3 meshes with the driven gear 31; a fixing spring 32 is sleeved on the surface of the worm 117; one end of the fixing spring 32 is connected to the worm 117, and the other end is connected to the driven gear 31; an electromagnetic ring 33 is embedded on the surface of the wheel body 111.

[0039] In one embodiment of the present invention, a cover plate 34 is installed on one side of the wheel body 111; both the cover plate 34 and the protective shell 171 are coated with a PTFE material coating.

[0040] In one embodiment of the present invention, a rubber block 35 is fixedly connected to the lower end of the turning blade 112; the rubber block 35 is made of fluororubber material.

[0041] During operation, the blades 112 on the turning wheel 11 of different rotary tillers are often set at an angle. This is primarily to achieve efficient soil turning, breaking up, propulsion, and stable machine operation. The angled setting of the blades 112 allows them to cut into the soil in a "slanted chopping" manner, improving cutting efficiency and smoothness. Furthermore, after cutting into the soil, the angled blades 112 can roll the soil clods upwards, creating a turning action. Additionally, when the angled blades rotate, they generate a slanted reaction force on the soil, which produces a forward thrust component, essentially propelling the machine forward while turning the soil. However, the angle of the blades 112 on the turning wheel 11 of existing rotary tillers is not uniform. This is because the angle of the blades 112 directly affects their soil entry method, cutting method, and operating resistance, as well as the physical properties of the soil (such as hardness, etc.). Due to significant differences in humidity, viscosity, and structure, efficient, stable, and safe tillage can only be achieved by adjusting the tilt angle of the shovel 112. For example, using a shovel 112 with a small tilt angle in hard soil will prevent the shovel 112 from "piercing" the soil at a large angle, instead pushing it forward in a "scraping" manner. This prevents the shovel 112 from cutting into the soil smoothly, resulting in a large area of ​​frictional contact between the shovel 112 and the soil. This causes a sharp increase in the resistance experienced by the shovel 112, and the shovel 112 is subjected to a large instantaneous force, with the impact concentrated on the front edge, making it prone to cracking, rolling, deformation, and other damage. Similarly, if a shovel 112 with a large tilt angle is used in soft soil (such as sandy loam, moist loam, humus soil, etc.), the shovel 112 will enter the soil at a steep angle, which can cut into the soil quickly, but the soil turning effect is poor, thus affecting the tillage effect.

[0042] The rubber block 35 is designed to increase the friction between the shovel 112 and the wheel 111, so as to ensure that the shovel 112 remains tightly connected to the wheel 111 while rotating on the surface of the wheel 111, thereby improving the tillage effect of the shovel 112.

[0043] To address this issue, the present invention incorporates a worm gear 116 and a worm 117, allowing the user to drive the worm gear 116 to rotate by rotating the worm 117. The worm gear 116, through its connected mounting post 114, drives the turning blade 112 to rotate, thereby adjusting the tilt angle of the turning blade 112. This allows the adjusted turning blade 112 to effectively work on fields with different soil conditions, eliminating the need for direct replacement of the turning wheel 11. This not only reduces the production cost of replacing the turning wheel 11 but also shortens the time required for disassembly and replacement, reducing the operator's labor intensity and improving the efficiency of tillage operations.

[0044] In use, the user first opens the cover plate 34, then uses a wrench to rotate the worm 117, causing the worm 117 to drive the worm wheel 116 connected to it to rotate. This worm wheel 116 then drives the turning blade 112 connected to it to rotate on the circumferential surface of the wheel body 111, changing the tilt angle of the rotating turning blade 112. Once the tilt angle of the turning blade 112 is adjusted, the cover plate 34 is closed. The cover plate 34 is designed to protect the worm 117 within the groove 115. During tillage operations, sand, gravel, or weeds may enter the groove 115 and impact or entangle the worm 117. The cover plate prevents the worm 117 from vibrating or bending due to impact, ensuring its rotational efficiency, and also prevents weeds from becoming entangled in the worm. One end of 117 prevents weeds from pulling the worm gear 117 to rotate under the action of pulling force, and prevents the worm gear 117 from driving the worm gear 112 to rotate during the soil cutting process, so as to avoid damage such as chipping or deformation of the worm gear 112 due to rotation, and ensure that the worm gear 112 can operate normally and stably. The reason why the PTFE material coating is applied to the surface of the cover plate 34 and the protective shell 171 is to improve the smoothness and corrosion resistance of the surface of the cover plate 34 and the protective shell 171, reduce the adhesion of soil to the surface of the cover plate 34 and the protective shell 171, reduce the corrosion caused by soil to the cover plate 34 and the protective shell 171, thereby increasing the service life of the cover plate 34 and the protective shell 171 and reducing the difficulty of cleaning the cover plate 34 and the protective shell 171.

[0045] Since each turning wheel 11 is equipped with multiple turning blades 112, adjusting the angle of each turning blade 112 individually would reduce the speed of angle adjustment. To address this, a drive gear 3 is provided, with a hexagonal groove on one side. When the user opens the cover plate 34, the electromagnetic ring 33 is controlled to operate, generating a magnetic attraction force on the driven gear 31. This causes the driven gear 31 to press the fixing spring 32 closer to the drive gear 3 until the drive gear 3 meshes with the driven gear 31. Then, a hexagonal wrench is inserted into the hexagonal groove of the drive gear 3, thereby rotating the drive gear 3. This drives the multiple driven gears 31 that mesh with it to rotate, causing the multiple driven gears 31 to drive the worm gear 117 that is slidably connected to them to rotate. This causes the multiple worm gears 117 to drive the multiple turning blades 112 to rotate synchronously, thereby increasing the speed of angle adjustment of the multiple turning blades 112 and steadily improving the efficiency of tillage operations.

[0046] Furthermore, when working on the edges of paddy fields and wetland weedy areas, the soil is soft and slippery, and the grass roots are complex and tangled. Therefore, by setting up a mixed distribution of large and small tilt angle turning blades 112 on the same turning wheel 11, the alternating arrangement of large-angle turning blades 112 and small-angle turning blades 112 forms a blade combination system. That is, the large-angle turning blades 112 have a large soil entry angle and strong propulsion force, which can effectively cut into the soil, cut grass roots and propel the micro tiller forward, providing stable longitudinal driving force, while the small-angle turning blades 112 effectively perform soil turning operations.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-wheel drive micro-tiller applicable to various working environments, comprising a body (1); swivel wheels (11) and wheels (12) are installed on both sides of the body (1); the swivel wheels (11) are located at the front end of the body (1); the wheels (12) are located at the rear end of the body (1); a handlebar (13) is fixedly connected to the upper end of the body (1); characterized in that: The upper end of the body (1) is rotatably connected to a mounting frame (2); a hydraulic push rod (14) is provided between the mounting frame (2) and the body (1); one end of the hydraulic push rod (14) is rotatably connected to the body (1), and the other end is rotatably connected to the mounting frame (2); a drive motor (21) is fixedly installed inside the mounting frame (2); a connecting gear (22) is fixedly connected to the output end of the drive motor (21); two cavities (15) are opened inside the body (1); a first bevel gear ring (151) and a second bevel gear ring (152) are provided inside the two cavities (15); The first bevel gear ring (151) is fixedly connected to the axle of the turning wheel (11); the second bevel gear ring (152) is fixedly connected to the axle of the wheel (12); a bevel gear shaft (153) is rotatably connected to the lower end of the machine body (1); the two ends of the bevel gear shaft (153) are respectively meshed with the first bevel gear ring (151) and the second bevel gear ring (152); a spur gear (154) is fixedly connected to the surface of the bevel gear shaft (153); the spur gear (154) meshes with the connecting gear (22) through a transmission gear (155); the transmission gear (155) is rotatably connected to the machine body (1); The turning wheel (11) includes a wheel body (111) and a turning cutter (112); a circular groove (113) is formed on the surface of the wheel body (111); a mounting post (114) is rotatably connected in the circular groove (113); the mounting post (114) is fixedly connected to the turning cutter (112); a groove (115) is formed inside the wheel body (111); a worm wheel (116) is provided in the groove (115); the worm wheel (116) is fixedly connected to the mounting post (114); a worm (117) is rotatably connected to one side of the wheel body (111); the worm (117) meshes with the worm wheel (116).

2. The four-wheel drive mini-tiller applicable to various working environments according to claim 1, characterized in that: Support wheels (16) are provided on both sides of the body (1); a support rod (161) is fixedly connected to one end of the support wheel (1) near the body (1); the support rod (161) is rotatably connected to the body (1) through a torsion spring; the support rod (161) is connected to the drive motor (21) through a tension unit.

3. A four-wheel drive mini-tiller applicable to various working environments according to claim 2, characterized in that: The tensioning unit includes a steel wire rope (162); the output end of the drive motor (21) has a rectangular groove (23); a connecting rod (231) is slidably connected in the rectangular groove (23); the connecting rod (231) is connected to the bottom of the rectangular groove (23) by a connecting spring (232); an electromagnetic plate (233) is embedded in the bottom of the rectangular groove (23); a rotating ring (24) is sleeved on the surface of the connecting rod (231); the rotating ring (24) is rotatably connected to the mounting bracket (2); one end of the steel wire rope (162) is connected to the support rod (161), and the other end is connected to the rotating ring (24); a slot (221) that mates with the connecting rod (231) is opened on the surface of the connecting gear (22); a protrusion (234) is fixedly connected to the surface of the connecting rod (231); a groove (241) that mates with the protrusion (234) is opened on the surface of the rotating ring (24).

4. A four-wheel drive mini-tiller applicable to various working environments according to claim 3, characterized in that: The upper end of the body (1) is provided with an installation groove (17); a protective shell (171) is installed in the installation groove (17).

5. A four-wheel drive mini-tiller applicable to various working environments according to claim 4, characterized in that: A drive gear (3) is rotatably connected to one side of the wheel body (111); a driven gear (31) is slidably connected to the surface of the worm (117); the drive gear (3) meshes with the driven gear (31); a fixed spring (32) is sleeved on the surface of the worm (117); one end of the fixed spring (32) is connected to the worm (117), and the other end is connected to the driven gear (31); an electromagnetic ring (33) is embedded on the surface of the wheel body (111).

6. A four-wheel drive mini-tiller applicable to various working environments according to claim 5, characterized in that: A cover plate (34) is installed on one side of the wheel body (111); the cover plate (34) and the protective shell (171) are both coated with PTFE material.

7. A four-wheel drive mini-tiller applicable to various working environments according to claim 6, characterized in that: A rubber block (35) is fixedly connected to the lower end of the turning blade (112); the rubber block (35) is made of fluororubber material.

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