Electric mini-tiller suitable for greenhouse and using method thereof

Abstract

The application discloses a kind of electric mini-tiller suitable for greenhouse and its use method, it is related to electric mini-tiller technical field.The application includes casing, ploughing unit, track unit, power supply unit and ploughing unit height adjustment structure;Casing includes upper shell and lower shell in, the upper shell is equipped with power supply unit, the lower shell is equipped with ploughing unit in, the lower shell outer wall is equipped with track unit and ploughing unit height adjustment structure;Ploughing unit includes ploughing cylinder shell, ploughing roller structure and reduction gear combination, track unit includes two triangular tracks, the lower shell's front half is close to the bottom position two sides wall and is symmetrically equipped with two triangular tracks;Lower shell outer wall is equipped with ploughing unit height adjustment structure, and ploughing unit height adjustment structure is used to adjust the installation height of ploughing cylinder shell.The application solves the existing mini-tiller ploughing depth not easy to adjust, ploughing effect and ploughing speed matching effect is not good and so on.

Description

Technical Field

[0001] This invention belongs to the field of electric micro-tiller technology, and in particular relates to an electric micro-tiller suitable for greenhouses and its usage method. Background Technology

[0002] Miniaturization and convenience have always been key research areas for micro-tillers. However, the current micro-tiller blade assemblies and shifting mechanisms connected to the transmission are relatively complex and bulky, making them unsuitable for miniaturization trends. When micro-tillers are used in greenhouses, the tillage depth varies but is generally shallow, typically 5-15cm. Once the micro-tiller's structure is fixed, adjusting the tillage depth is difficult, as it's a predetermined depth that can only be adjusted by the operator pressing down, making precise adjustment impossible.

[0003] The existing micro-tillers do not separate the walking power and the driving power for tilling. As a result, when tilling the soil, if the soil is turned too fast, the walking speed will inevitably increase. For some hard soil, more power is often needed for tilling, but the walking speed needs to be relatively slow. Therefore, it is impossible to achieve the effect of separate control of tilling power and walking speed, so the tilling cannot be adjusted as needed. Summary of the Invention

[0004] The purpose of this invention is to provide an electric micro-tiller suitable for greenhouses and its usage method. By designing an adjustable height for the tillage unit, different tillage depths can be adjusted. At the same time, two different power outputs are designed to allow independent output of tillage and walking power, solving the problems of existing micro-tillers where the tillage depth is not easy to adjust and the tillage effect and tillage speed are not well matched.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention is an electric micro-tiller suitable for greenhouses, comprising a casing, a tillage unit, a track unit, a power supply unit, and a tillage unit height adjustment structure;

[0007] The housing includes an upper housing and a lower housing. A power supply unit is installed in the upper housing, and a tillage unit is installed in the lower housing. A track unit and a tillage unit height adjustment structure are installed on the outer wall of the lower housing. Two sets of drive structures that drive the tillage unit and the track unit respectively are installed in the lower housing.

[0008] The tillage unit includes a tillage cylinder shell, a tillage roller structure, and a reduction gear assembly. The tillage cylinder shell has gear chambers symmetrically arranged on both sides. The middle section of the tillage cylinder shell has a downward-facing semi-cylindrical groove. The tillage roller structure includes a roller and tillage blades. The roller has mounting shafts symmetrically arranged at both ends. Multiple rows of tillage blades are mounted on the roller. The reduction gear assembly is installed in the gear chamber. The drive shaft on each reduction gear assembly passes through the two side walls of the semi-cylindrical groove. The mounting shafts at both ends of the roller are mounted on the corresponding drive shafts. The gear chamber is sealed with a side sealing plate.

[0009] The track unit includes two triangular tracks. Two triangular tracks are symmetrically installed on the two side walls of the front half of the lower housing near the bottom. The two sets of drive structures are an electric drive track structure and an electric drive gear structure. The electric drive track structure synchronously drives the two triangular tracks to rotate, and the electric drive gear structure synchronously drives the two reduction gears to work together.

[0010] The tillage cylinder is installed in the middle position inside the lower shell. The outer wall of the lower shell is provided with a tillage unit height adjustment structure, which is used to adjust the installation height of the tillage cylinder.

[0011] The present invention is further configured such that the reduction gear assembly includes a pulley gear disk, an intermediate gear disk and a drive gear disk, wherein the pulley gear disk is provided with a first driven pulley and a drive gear disk, and the drive gear disk, the intermediate gear disk and the drive gear disk are in a straight line and mesh sequentially.

[0012] The circumference of the drive gear disk is 1.5-2.0 times the circumference of the intermediate gear disk, and the circumference of the intermediate gear disk is 1.5-2.0 times the circumference of the drive gear disk.

[0013] The pulley, intermediate gear, and drive gear are all equipped with mounting shafts at both ends, which are rotatably mounted on the inner wall of the gear cavity and the side sealing plate, respectively.

[0014] The present invention is further configured such that the electric drive gear structure includes a first dual-axis motor, an adjusting pulley, and a first belt. The first dual-axis motor is mounted on the top wall inside the lower housing. Two first power pulleys are symmetrically arranged on the two rotating shafts of the first dual-axis motor near the end positions. An adjusting pulley is installed on the lower housing at the position between each first power pulley and the corresponding first driven pulley. The first belt is fitted onto the same group of first power pulleys, first driven pulleys, and adjusting pulleys.

[0015] The lower housing is provided with multiple adjustment mounting holes, and the adjustment pulley is installed in different adjustment mounting holes to adjust the tension of the first belt.

[0016] The present invention is further configured such that the soil-cultivating unit height adjustment structure is symmetrically arranged on both sides of the lower shell. The soil-cultivating unit height adjustment structure includes three limiting strip holes, three sets of height adjustment hole groups, a limiting bolt rod and a positioning bolt rod. The three limiting strip holes are all vertically upward on the outer wall of the lower shell, and the three sets of height adjustment hole groups are all vertically upward in a row.

[0017] The side sealing plates are fixed to the gear chamber at the other three corner positions of the non-belt pulley gear plate installation position using sealing plate mounting bolts. The end cap of the sealing plate mounting bolt has a screw-in bolt hole. One end of the limiting bolt is inserted from the limiting strip hole and screwed into the corresponding screw-in bolt hole.

[0018] Three positioning mounting posts are provided in the gear cavity. Each positioning mounting post has a positioning rod hole on its side sealing plate at the corresponding position. When the positioning rod hole corresponds to a hole in the height adjustment hole group, the positioning bolt rod is inserted from the corresponding height adjustment hole and passed through the positioning rod hole and screwed into the positioning mounting post.

[0019] When the positioning bolt is inserted into the height adjustment hole at different height positions, the corresponding adjustment pulley will be adjusted and installed on different adjustment mounting holes.

[0020] The present invention is further configured such that the track unit includes a track, a track triangle plate, a track cylinder, and a swing shock absorber. A mounting cylinder is provided at each of the three outer corners of the track triangle plate. A shaft cylinder is provided on the back of the mounting cylinder at the top of the track triangle plate. The track cylinder includes two driven cylinders and one driving cylinder. The two driven cylinders are respectively mounted on the two mounting cylinders at the bottom of the track triangle plate via a bearing. The driving cylinder is mounted on the mounting cylinder at the top of the track triangle plate via a bearing. A through shaft is provided on the driving cylinder, and the through shaft passes through the shaft cylinder. The shaft cylinder is rotatably mounted on the outer wall of the lower housing and fixed to the end of the shaft cylinder inside the lower housing via a limiting ring. The track is fitted onto the two driven cylinders and the driving cylinder.

[0021] Two swing shock absorbers are symmetrically arranged on the back of the track triangle plate with the center line. One end of the swing shock absorber is installed on the track triangle plate and the other end is rotatably installed on the inner wall of the lower housing. An installation groove is opened on the inner wall of the lower housing for installing the swing shock absorber.

[0022] The through shaft passes through the limiting ring, and the electric drive track structure synchronously drives the two through shafts to rotate synchronously.

[0023] The present invention is further configured such that the electric drive track structure includes a second dual-axis motor, a drive pulley and a second belt. The second dual-axis motor is mounted on the top wall inside the lower housing. Two second power pulleys are symmetrically arranged on both sides of the rotating shaft of the second dual-axis motor near the end position. A drive pulley is fixed to the end of the through shaft. A second belt is sleeved between the second power pulley and the drive pulley on the same side.

[0024] The present invention is further configured such that a support rod is rotatably provided at the middle position of the rear side wall of the lower housing, a return spring is connected between the middle position of the support rod and the rear side wall of the lower housing, and a roller is provided at the bottom end of the support rod;

[0025] When the bottom of the track is horizontal, the distance between the bottom of the track and the bottom of the lower housing is 10-15cm;

[0026] Without being pulled by the return spring, the distance between the roller and the bottom of the lower housing is 25-30cm.

[0027] The lower housing has push rods at the two corners of the top of the rear side wall.

[0028] The present invention is further configured such that the power supply unit includes a storage battery and a power supply voltage regulator box, the storage battery is electrically connected to the power supply voltage regulator box, and the power supply voltage regulator box is electrically connected to two sets of drive structures respectively.

[0029] The invention is further configured such that a bottom sealing plate is provided at the opening positions on both sides of the tillage unit at the bottom of the lower shell, and a top cover is provided at the top of the lower shell.

[0030] A method for using an electric micro-tiller suitable for greenhouses is as follows:

[0031] S1: Determine the tillage depth. Adjust the installation height of the tillage unit through the tillage unit height adjustment structure. When the tillage unit is installed and the track unit contacts the ground, the tillage depth is determined by the depth to which the tillage blade on the tillage roller structure is inserted into the soil.

[0032] S2: The electric drive track structure will drive the track unit to work, enabling the micro tiller to walk. The electric drive gear structure will drive the tillage unit to work, so that the two reduction gears will synchronously drive the tillage roller structure to rotate, so that the tillage blades can till the soil.

[0033] S3: The power supply unit supplies power to the electric drive track structure and the electric drive gear structure respectively, so as to realize that the power of the micro tiller for walking and tilling is independent.

[0034] The present invention has the following beneficial effects:

[0035] 1. The tillage unit of this invention adjusts its installation height through a tillage unit height adjustment structure. Since the height of the track at the bottom of the track unit from the bottom of the machine casing remains constant, when the track contacts the ground, the depth to which the tillage blades on the tillage unit penetrate the soil during rotation is the tillage depth. By adjusting the installation height before tillage, the tillage depth at different positions can be determined, enabling the micro-tiller to adjust the tillage depth as needed, thus solving the problem of cumbersome tillage depth adjustment and inaccurate tillage depth adjustment in existing micro-tillers.

[0036] 2. The present invention equips the walking track unit and the tilling unit with independent electric drive track structure and electric drive gear structure respectively. The tilling speed and the walking speed of the micro tiller are controlled independently to ensure that the tilling efficiency is not affected under controlled walking speed.

[0037] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the structure of an electric micro-tiller suitable for greenhouses.

[0040] Figure 2 This is a schematic diagram of the structure under the casing of an electric micro-tiller suitable for greenhouses.

[0041] Figure 3 This is a schematic diagram of the tillage unit and the electric drive gear structure.

[0042] Figure 4 This is a structural diagram of the track unit and the electric drive track structure.

[0043] Figure 5 This is a schematic diagram of the internal structure of a arable soil unit.

[0044] Figure 6 This is a schematic diagram of the reduction gear assembly structure on one side of the tillage unit.

[0045] Figure 7 This is a schematic diagram of the casing.

[0046] The attached diagram lists the components represented by each number as follows:

[0047] 1. Housing; 10. Push rod; 11. Top cover; 12. Bottom sealing plate; 13. Upper housing; 14. Lower housing; 15. Adjustment mounting hole; 16. Limiting strip hole; 17. Height adjustment hole; 18. Mounting groove; 2. Track unit; 20. Swing shock absorber; 21. Track; 22. Track triangle plate; 221. Mounting cylinder; 222. Bearing; 223. Shaft cylinder; 224. Limiting ring; 23. Driven cylinder; 24. Driving cylinder; 25. Drive pulley; 3. Tillage unit; 31. Tillage cylinder shell; 310. Gear chamber; 32. Side sealing plate; 33. Roller; 331. 34. Tillage blade; 34. Drive gear disc; 341. First driven pulley; 35. Intermediate gear disc; 36. Drive gear disc; 37. Sealing plate mounting bolt; 371. Limiting bolt rod; 38. Positioning bolt rod; 4. Support rod; 41. Return spring; 5. Power supply voltage regulator box; 50. Storage battery; 6. Second dual-shaft motor; 61. Second power pulley; 611. Second belt; 62. Bearings for fixing on both sides of the shaft of the second dual-shaft motor; 7. First dual-shaft motor; 71. First power pulley; 72. Adjusting pulley; 73. First belt; 8. Tillage unit height adjustment structure. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Please see Figures 1-7 The present invention is an electric micro-tiller suitable for greenhouses, comprising a casing 1, a tillage unit 3, a track unit 2, a power supply unit, and a tillage unit height adjustment structure 8;

[0050] The housing 1 includes an upper housing 13 and a lower housing 14. A power supply unit is installed in the upper housing 13, and a tillage unit 3 is installed in the lower housing 14. A track unit 2 and a tillage unit height adjustment structure 8 are installed on the outer wall of the lower housing 14. Two sets of drive structures that drive the tillage unit 3 and the track unit 2 respectively are installed in the lower housing 14.

[0051] The upper shell 13 and the lower shell 14 are designed separately to ensure that dust cannot enter the upper shell 13. The structure of the soil-cultivating unit height adjustment structure 8 is to adjust the lowering height of the soil-cultivating unit 3.

[0052] The tillage unit 3 includes a tillage cylinder shell 31, a tillage roller structure, and a reduction gear assembly. The tillage cylinder shell 31 has gear chambers 310 symmetrically arranged on both sides. The middle section of the tillage cylinder shell 31 has a downward-facing semi-cylindrical groove. The tillage roller structure includes a roller 33 and tillage blades 331. The roller 33 has mounting shafts symmetrically arranged at both ends. Multiple rows of tillage blades 331 are mounted on the roller 33. The reduction gear assembly is installed in the gear chamber 310. The drive shaft on each reduction gear assembly passes through the two side walls of the semi-cylindrical groove. The mounting shafts at both ends of the roller 33 are mounted on the corresponding drive shafts. The gear chamber 310 is sealed with a side sealing plate 32.

[0053] The independent and detachable nature of the tillage unit 3 ensures convenient height adjustment and easy maintenance. The reduction gear assembly reduces the rotational speed provided by the drive structure without changing the power, thus functioning as a speed reducer. When the roller 33 rotates, the tillage blades 331 on it till the soil, turning it over. Both the roller 33 and its tillage blades 331 can be replaced as needed to change the tillage effect. Figure 5 It can be seen that the pin at the connection point between the mounting shaft and the drive shaft can be removed (or the bolt and nut connection can be used).

[0054] The gear chamber 310 protects the internal gears, with only a gap at the top corner. Dust is blocked by the bottom of the gear chamber 310 and will not rise.

[0055] The track unit 2 includes two triangular tracks. Two triangular tracks are symmetrically installed on the two side walls of the front half of the lower housing 14 near the bottom. The two sets of drive structures are an electric drive track structure and an electric drive gear structure. The electric drive track structure synchronously drives the two triangular tracks to rotate, and the electric drive gear structure synchronously drives the two reduction gears to work together.

[0056] The tillage cylinder shell 31 is installed in the middle position inside the lower shell 14. The outer wall of the lower shell 14 is provided with a tillage unit height adjustment structure 8, which is used to adjust the installation height of the tillage cylinder shell 31.

[0057] Track unit 2 ensures that the tracks make more contact with the ground, resulting in greater ground-gripping force and reducing the likelihood of sinking. The electric drive track structure and electric drive gear structure ensure independent drive for the two positions, guaranteeing that each track can only move when it achieves optimal soil tillage in each position. The walking speed and tillage effect can be adjusted in real time to achieve the best tillage effect.

[0058] The reduction gear assembly includes a pulley gear disk, an intermediate gear disk 35 and a drive gear disk 36. The pulley gear disk is provided with a first driven pulley 341 and a drive gear disk 34. The drive gear disk 34, the intermediate gear disk 35 and the drive gear disk 36 are in a straight line and mesh sequentially.

[0059] The circumference of the drive gear disk 36 is 1.5-2.0 times the circumference of the intermediate gear disk 35, and the circumference of the intermediate gear disk 35 is 1.5-2.0 times the circumference of the drive gear disk 34.

[0060] The pulley toothed disc, the intermediate toothed disc 35 and the drive toothed disc 36 are all provided with mounting shafts at both ends. The mounting shafts are respectively rotatably mounted on the inner wall of the gear chamber 310 and on the side sealing plate 32.

[0061] The diameter of the drive gear disk 34, intermediate gear disk 35, and drive gear disk 36 increases progressively, so that the drive gear disk 36 only rotates once for every 3-5 rotations of the drive gear disk 34. This achieves a speed reduction effect and ensures that the electric drive gear structure can provide sufficient power at a high speed (high speed can provide sufficient power). After speed reduction, the drive gear disk 36 has a strong power output, ensuring the soil tillage effect.

[0062] The electric drive gear structure includes a first dual-axis motor 7, an adjusting pulley 72, and a first belt 73. The first dual-axis motor 7 is mounted on the inner top wall of the lower housing 14. Two first power pulleys 71 are symmetrically arranged on both sides of the rotating shaft of the first dual-axis motor 7 near the end. An adjusting pulley 72 is installed on the lower housing 14 between each first power pulley 71 and the corresponding first driven pulley 341. The first belt 73 is fitted onto the same group of first power pulleys 71, first driven pulleys 341, and adjusting pulleys 72.

[0063] The lower housing 14 is provided with multiple adjustment mounting holes 15, and the adjustment pulley 72 is installed in different adjustment mounting holes 15 to adjust the tension of the first belt 73.

[0064] The first dual-axis motor 7 can ensure that the first power pulleys 71 on both sides operate synchronously, driving the two first belts 73 (the first belts 73 are equipped with anti-slip ridges and other structures to increase the driving effect) to operate synchronously. The adjustment pulley 72 changes the tension of the first belts 73 when the distance between the first power pulley 71 and the first driven pulley 341 changes. The adjustment of the position of the adjustment pulley 72 can stretch and tighten the first belts 73 to ensure the power transmission of the first belts 73.

[0065] The tillage unit height adjustment structure 8 is symmetrically arranged on both sides of the lower shell 14. The tillage unit height adjustment structure 8 includes three limiting strip holes 16, three sets of height adjustment holes 17, a limiting bolt rod 371, and a positioning bolt rod 38. The three limiting strip holes 16 are all vertically upward on the outer wall of the lower shell 14, and the three sets of height adjustment holes 17 are all vertically upward in a row.

[0066] The side sealing plate 32 is fixed to the gear chamber 310 at the other three corner positions of the non-belt pulley gear disk installation position using sealing plate mounting bolts 37. The end cap of the sealing plate mounting bolt 37 has a screw bolt hole. One end of the limiting bolt 371 is inserted from the limiting strip hole and screwed into the corresponding screw bolt hole.

[0067] Setting three limit strip holes 16 (the active gear disc 34 is inconvenient to set and is easy to deform) is sufficient to ensure that the tillage cylinder shell 31 does not swing left and right when it moves up and down. The three sets of height adjustment holes 17 are distributed in a triangle to ensure that the tillage cylinder shell 31 is suspended by three points of force, making the installation more stable.

[0068] Three positioning mounting posts are provided in the gear chamber 310. Each positioning mounting post has a positioning rod hole on the side sealing plate 32 at the corresponding position. When the positioning rod hole corresponds to a hole in the group of height adjustment holes 17, the positioning bolt rod 38 is inserted from the corresponding height adjustment hole 17 and passed through the positioning rod hole and screwed into the positioning mounting post.

[0069] When the positioning bolt rod 38 is inserted into the height adjustment hole 17 at different height positions, the corresponding adjustment pulley 72 will be adjusted and installed on different adjustment mounting holes 15.

[0070] The positioning mounting post and the inner wall of the gear chamber 310 are an integral structure, ensuring sufficient installation stability when the tillage cylinder shell 31 is suspended. Each adjustment is achieved by simply rotating and removing the positioning bolt rod 38. To align with the new height adjustment hole 17, insert the positioning bolt rod 38 into the new height adjustment hole 17 and screw it into the positioning mounting post to complete the new installation.

[0071] The track unit 2 includes a track 21, a track triangle plate 22, a track cylinder, and a swing shock absorber 20. A mounting cylinder 221 is provided at each of the three outer corners of the track triangle plate 22. A shaft cylinder 223 is provided on the back of the mounting cylinder 221 at the top of the track triangle plate 22. The track cylinder includes two driven cylinders 23 and one driving cylinder 24. The two driven cylinders 23 are respectively mounted on the two mounting cylinders 221 at the bottom of the track triangle plate 22 via a bearing 222. The driving cylinder 24 is mounted on the mounting cylinder 221 at the top of the track triangle plate 22 via a bearing 222. A through shaft is provided on the driving cylinder 24, which passes through the shaft cylinder. The shaft cylinder is rotatably mounted on the outer wall of the lower housing 14 and fixed to the end of the shaft cylinder 223 inside the lower housing 14 by a limiting ring 224. The track 21 is fitted onto the two driven cylinders 23 and the driving cylinder 24.

[0072] Two swing shock absorbers 20 are symmetrically arranged on the back of the track triangle plate 22 with the center line. One end of the swing shock absorber 20 is installed on the track triangle plate 22 and the other end is rotatably installed on the inner wall of the lower housing 14. An installation groove 18 is opened on the inner wall of the lower housing 14 for installing the swing shock absorber 20.

[0073] The through shaft passes through the limiting ring 224, and the electric drive track structure synchronously drives the two through shafts to rotate synchronously.

[0074] The track unit 2 is for the purpose of track movement. The track triangle plate 22 will swing when moving. It will be damped by the swing shock absorber 20 to ensure that the track triangle plate 22 runs smoothly and does not make impact noise.

[0075] Each of the two driven cylinders 23 and one driving cylinder 24 has a shaft on its inner side (the bearing 222 is sleeved on the shaft, but the bearing is stuck inside the mounting cylinder 221). In this way, both the driven cylinders 23 and the driving cylinder 24 can rotate on the mounting cylinder 221. The inner side of the track 21 has anti-slip ridges, and the driven cylinders 23 and the driving cylinder 24 are also provided with ridges at the positions where they are wrapped by the track 21, so as to achieve non-slip driving.

[0076] After the limiting ring 224 is fixed on the end of the shaft cylinder 223, the lower housing 14 cannot be pulled out from the end of the shaft cylinder 223, but it can swing and rotate left and right on the outer wall of the lower housing 14 (the left and right swing does not exceed 10°). This is beneficial to ensure that the track is always in contact with the ground when the tilled soil position is slightly raised or lowered during the operation of the track 21, thus ensuring the operation of the walking power.

[0077] The through shaft drives the active cylinder 24 to rotate (the two are an integral structure), while the through shaft is driven by the electric drive track structure.

[0078] The electric drive track structure includes a second dual-axis motor 6, a drive pulley 25, and a second belt 611. The second dual-axis motor 6 is mounted on the inner top wall of the lower housing 14. Two second drive pulleys 61 are symmetrically arranged on both sides of the rotating shaft near their ends. A drive pulley 25 is fixed to the end of the through shaft. A second belt 611 is fitted between the second drive pulley 61 and the drive pulley 25 on the same side. Bearings 62 are fixed on both sides of the rotating shaft of the second dual-axis motor to ensure stable operation.

[0079] The second dual-axis motor 6 can ensure that the two second power pulleys 61 rotate synchronously, and ensure that the two second belts 611 drive the drive pulleys 25 synchronously. The two drive pulleys 25 are fixed on the two through shafts, ensuring that the two through shafts rotate synchronously, so as to realize the synchronous operation of the two side tracks 21.

[0080] The lower housing 14 is rotatably provided with a support rod 4 at the middle position of the rear side wall. A return spring 41 is connected between the middle position of the support rod 4 and the rear side wall of the lower housing 14. A roller is provided at the bottom end of the support rod 4.

[0081] When the bottom of the track 21 is horizontal, the distance between the bottom of the track 21 and the bottom of the lower housing 14 is 10-15cm;

[0082] Without being pulled by the return spring 41, the distance between the roller and the bottom of the lower housing 14 is 25-30cm.

[0083] The lower housing 14 has push rods 10 at the two corner positions of the top of the rear side wall.

[0084] The distance between the bottom of the track 21 and the bottom of the lower housing 14 is 10-15cm, ensuring that the track can still move even if it sinks slightly, and the lower housing 14 will not touch the ground.

[0085] The support rod 4 can ensure that there is a supporting force on the rear side of the lower housing 14, but it is elastic. When a person holds the two push rods 10, it ensures stable pushing and the force of the hand will be reduced, making the operation more convenient.

[0086] The power supply unit includes a storage battery 50 and a power supply voltage regulator box 5. The storage battery 50 is electrically connected to the power supply voltage regulator box 5, and the power supply voltage regulator box 5 is electrically connected to two sets of drive structures respectively.

[0087] The battery 50 and the power supply voltage regulator box 5 are standard configurations for mini tillers. The specific structure of the power supply voltage regulator box 5 will not be described in detail. A standard voltage regulator box can be used to adjust the power.

[0088] The lower housing 14 has a bottom sealing plate 12 at the opening positions on both sides of the tillage unit, and the lower housing 14 has a top cover 11 at the top.

[0089] The bottom sealing plate 12 is to prevent dust from entering the opening at the bottom non-cultivated soil unit 3. It can also be disassembled for height adjustment, mainly by adjusting the position of the pulley 72, which is a manual adjustment.

[0090] A method for using an electric micro-tiller suitable for greenhouses is as follows:

[0091] S1: Determine the soil tillage depth. Adjust the installation height of the soil tillage unit 3 by adjusting the soil tillage unit height structure 8. When the soil tillage unit 3 is installed, the soil tillage depth is determined by the depth to which the soil tillage blade 331 on the soil tillage roller structure is inserted into the soil after the track unit 2 is in contact with the ground.

[0092] S2: The electric drive track structure will drive the track unit 2 to work, enabling the micro tiller to walk. The electric drive gear structure will drive the tillage unit 3 to work, so that the two reduction gears will synchronously drive the tillage roller structure to rotate, so that the tillage blade 331 will till the soil.

[0093] S3: The power supply unit supplies power to the electric drive track structure and the electric drive gear structure respectively, so as to realize that the power of the micro tiller for walking and tilling is independent.

[0094] Before the assembled mini tiller begins tilling, first determine the requirements for greenhouse tilling, and then adjust the height of the tilling unit. The adjustment method is as follows: First, remove all the positioning bolt rods 38, and adjust the height by sliding the tilling unit 3. This allows the three limit bolt rods 371 on each side to slide within the limit strip holes 16 to achieve the height adjustment. Then, when the positioning holes on the positioning mounting column match the new height adjustment holes 17, insert the positioning bolt rods 38 into the new height adjustment holes 17 and screw them into the positioning mounting column to complete the height adjustment.

[0095] After the height adjustment is completed, the tillage operation is carried out. First, the track unit 2 is brought into contact with the ground. When the support rod 4 is not under downward pressure (when no one is holding the push rod 10 and pressing it down), the tillage unit 3 will be raised. It may or may not touch the ground, depending on the height of the tillage unit 3. However, to start tilling, you need to hold the push rod 10 down and press it down while starting the tillage (the track unit 2 does not work at first). After a groove is tilled into the ground (after the groove is tilled), the track unit 2 is started to work, and the soil is tilled while walking.

[0096] The electric drive track structure and the electric drive gear structure are independent of each other, so that the amount of tillage power and the walking power (walking speed, when the track 21 does not slip) do not affect each other.

[0097] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0098] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electric micro-tiller suitable for greenhouses, characterized in that: It includes a casing (1), a tillage unit (3), a track unit (2), a power supply unit, and a tillage unit height adjustment structure (8). The housing (1) includes an upper housing (13) and a lower housing (14). A power supply unit is installed inside the upper housing (13), and a tillage unit (3) is installed inside the lower housing (14). A track unit (2) and a tillage unit height adjustment structure (8) are installed on the outer wall of the lower housing (14). Two sets of drive structures that drive the tillage unit (3) and the track unit (2) respectively are installed inside the lower housing (14). The tillage unit (3) includes a tillage cylinder shell (31), a tillage roller structure, and a reduction gear assembly. The tillage cylinder shell (31) has symmetrical gear chambers (310) on both sides. The middle section of the tillage cylinder shell (31) has a downward-facing semi-cylindrical groove. The tillage roller structure includes a roller (33) and tillage blades (331). The roller (33) has symmetrical mounting shafts at both ends. Multiple tillage blades (331) are mounted on the roller (33). The reduction gear assembly is installed in the gear chamber (310). The drive shaft on each reduction gear assembly passes through the two side walls of the semi-cylindrical groove. The mounting shafts at both ends of the roller (33) are mounted on the corresponding drive shafts. The gear chamber (310) is sealed with a side sealing plate (32). The track unit (2) includes two triangular tracks. Two triangular tracks are symmetrically installed on the two side walls of the front half of the lower housing (14) near the bottom. The two sets of drive structures are an electric drive track structure and an electric drive gear structure. The electric drive track structure synchronously drives the two triangular tracks to operate, and the electric drive gear structure synchronously drives the two reduction gears to work together. The tillage cylinder shell (31) is installed in the middle position inside the lower shell (14). The outer wall of the lower shell (14) is provided with a tillage unit height adjustment structure (8), which is used to adjust the installation height of the tillage cylinder shell (31).

2. The electric micro-tiller suitable for greenhouses according to claim 1, characterized in that, The reduction gear assembly includes a pulley gear disk, an intermediate gear disk (35) and a drive gear disk (36). The pulley gear disk is provided with a first driven pulley (341) and a drive gear disk (34). The drive gear disk (34), the intermediate gear disk (35) and the drive gear disk (36) are in a straight line and mesh sequentially. The circumference of the drive gear disk (36) is 1.5-2.0 times the circumference of the intermediate gear disk (35), and the circumference of the intermediate gear disk (35) is 1.5-2.0 times the circumference of the drive gear disk (34). The pulley, intermediate gear (35), and drive gear (36) are all provided with mounting shafts at both ends, which are respectively rotatably mounted on the inner wall of the gear chamber (310) and the side sealing plate (32).

3. The electric micro-tiller suitable for greenhouses according to claim 2, characterized in that, The electric drive gear structure includes a first dual-shaft motor (7), an adjusting pulley (72), and a first belt (73). The first dual-shaft motor (7) is installed on the inner top wall of the lower housing (14). The two shafts of the first dual-shaft motor (7) are symmetrically provided with two first power pulleys (71) near the end. An adjusting pulley (72) is installed on the lower housing (14) between each first power pulley (71) and the corresponding first driven pulley (341). The first belt (73) is fitted onto the same group of first power pulleys (71), first driven pulleys (341), and adjusting pulleys (72). The lower housing (14) is provided with multiple adjustment mounting holes (15), and the adjustment pulley (72) is installed in different adjustment mounting holes (15) to adjust the tension of the first belt (73).

4. The electric micro-tiller suitable for greenhouses according to claim 3, characterized in that, The soil unit height adjustment structure (8) is symmetrically arranged on both sides of the lower shell (14). The soil unit height adjustment structure (8) includes three limiting strip holes (16), three sets of height adjustment holes (17), a limiting bolt rod (371), and a positioning bolt rod (38). The three limiting strip holes (16) are all vertically upward on the outer wall of the lower shell (14), and the three sets of height adjustment holes (17) are all vertically upward in a row. The gear chamber (310) has a side sealing plate (32) fixed to the gear chamber (310) at the other three corner positions of the non-belt pulley gear plate installation position using sealing plate mounting bolts (37). The end cap of the sealing plate mounting bolt (37) has a screw-in bolt hole. One end of the limiting bolt (371) is inserted from the limiting strip hole (16) and screwed into the corresponding screw-in bolt hole. Three positioning mounting posts are provided in the gear chamber (310). Each positioning mounting post has a positioning rod hole on the side sealing plate (32) at the corresponding position. When the positioning rod hole corresponds to a hole in the height adjustment hole (17) group, the positioning bolt rod (38) is inserted from the corresponding height adjustment hole (17) and passed through the positioning rod hole and screwed into the positioning mounting post. When the positioning bolt rod (38) is inserted into the height adjustment hole (17) at different height positions, the corresponding adjustment pulley (72) will be adjusted and installed on different adjustment mounting holes (15).

5. The electric micro-tiller suitable for greenhouses according to claim 1, characterized in that, The track unit (2) includes a track (21), a track triangle plate (22), a track cylinder, and a swing shock absorber (20). A mounting cylinder (221) is provided at each of the three outer corners of the track triangle plate (22). A shaft cylinder (223) is provided on the back of the mounting cylinder (221) at the top of the track triangle plate (22). The track cylinder includes two driven cylinders (23) and one driving cylinder (24). The two driven cylinders (23) are respectively mounted at the bottom of the track triangle plate (22) via a bearing (222). The drive cylinder (24) is mounted on the top of the track triangle plate (22) via a bearing (222) on two mounting cylinders (221). The drive cylinder (24) is provided with a through shaft that passes through the shaft cylinder (223). The shaft cylinder (223) is rotatably mounted on the outer wall of the lower housing (14) and fixed to the end of the shaft cylinder (223) inside the lower housing (14) by a limiting ring (224). The track (21) is fitted on two driven cylinders (23) and one drive cylinder (24). Two swing shock absorbers (20) are symmetrically arranged on the back of the track triangle plate (22) with the center line. One end of the swing shock absorber (20) is installed on the track triangle plate (22) and the other end is rotatably installed on the inner wall of the lower housing (14). An installation groove (18) is opened on the inner wall of the lower housing (14) for installing the swing shock absorber (20). The through shaft passes through the limiting ring (224), and the electric drive track structure synchronously drives the two through shafts to rotate synchronously.

6. The electric micro-tiller suitable for greenhouses according to claim 5, characterized in that, The electric drive track structure includes a second dual-axis motor (6), a drive pulley (25), and a second belt (611). The second dual-axis motor (6) is installed on the inner top wall of the lower housing (14). The two shafts of the second dual-axis motor (6) are symmetrically provided with two second power pulleys (61) near the end. The end of the through shaft is fixed with a drive pulley (25). A second belt (611) is fitted between the second power pulley (61) and the drive pulley (25) on the same side.

7. An electric micro-tiller suitable for greenhouses according to claim 5, characterized in that, The lower housing (14) is provided with a support rod (4) at the middle position of the rear side wall. A return spring (41) is connected between the middle position of the support rod (4) and the rear side wall of the lower housing (14). A roller is provided at the bottom end of the support rod (4). When the bottom of the track (21) is horizontal, the distance between the bottom of the track (21) and the bottom of the lower housing (14) is 10-15cm; When the support rod (4) is not pulled by the return spring (41), the distance between the roller and the bottom of the lower housing (14) is 25-30cm; The lower housing (14) has push rods (10) at the two corner positions on the top of the rear side wall.

8. The electric micro-tiller suitable for greenhouses according to claim 1, characterized in that, The power supply unit includes a battery (50) and a power supply regulator box (5). The battery (50) is electrically connected to the power supply regulator box (5), and the power supply regulator box (5) is electrically connected to two sets of drive structures respectively.

9. An electric micro-tiller suitable for greenhouses according to claim 1, characterized in that, The lower shell (14) has a bottom sealing plate (12) at the opening position on both sides of the tillage unit (3) at the bottom, and a top cover (11) is provided on the top of the lower shell (14).

10. A method of using an electric micro-tiller suitable for greenhouses, characterized in that, The method of using the electric micro-tiller suitable for greenhouses as described in any one of claims 1-9 is as follows: S1: Determine the soil depth. Adjust the installation height of the soil unit (3) by adjusting the soil unit height structure (8). When the soil unit (3) is installed and the track unit (2) contacts the ground, the soil depth is determined by the depth to which the soil blade (331) on the soil roller structure is inserted into the soil. S2: The electric drive track structure will drive the track unit (2) to work, so that the micro tiller can walk. The electric drive gear structure drives the tillage unit (3) to work, so that the two reduction gears can synchronously drive the tillage roller structure to rotate, so that the tillage blade (331) can till the soil. S3: The power supply unit supplies power to the electric drive track structure and the electric drive gear structure respectively, so as to realize that the power of the micro tiller for walking and tilling is independent.

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