Small farming machine suitable for complex terrains

Abstract

The invention relates to the technical field of farming machines, in particular to a small farming machine suitable for complex terrains, which comprises a power assembly, the power assembly comprises a box body, the outer wall of one side of the box body is provided with two mounting grooves, the top of the box body is provided with a mounting area, the mounting area is internally provided with a wheel body assembly, and the wheel body assembly comprises a mounting frame; the mounting frame is mounted in the box body through bolts, the connecting shaft is mounted in the mounting frame through a bearing, the belt wheels are mounted at the two ends of the connecting shaft through flat keys, and the driven gear is mounted outside the connecting shaft through a flat key; the terrain height difference of the two sides is detected in real time through the distance measuring sensor, when it is found that one side of the farming machine inclines, the farming machine drives the output end of the electric push rod to push the sliding block to slide along the mounting groove, the height between the box body and the ground is changed, and the bumping amplitude of a rugged road surface is remarkably reduced; and in combination with flexible transmission of the elastic belt, terrain sudden change impact is compensated, and the rolling risk is greatly reduced compared with a traditional fixed-wheel-track machine type.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural tilling machines, and in particular to a small agricultural tilling machine suitable for complex terrains. Background Art

[0002] Small agricultural machines are agricultural machines with a power of no more than 7.5kW that can directly use the drive axle to drive the rotating working parts. They are mainly used for tillage operations such as water and dry land preparation, farmland management, and facility agriculture. Small agricultural machines are also called micro tillers, management machines, or micro tillers. They are small in size, light in weight, easy to carry and operate, and are suitable for orchards, vegetable fields, greenhouses, hilly slopes, and small plots of land.

[0003] For example, a portable multi-purpose agricultural machine with application number CN201510705166.8 and publication date 20160106 comprises a machine body, a walking support device for supporting the machine body to walk is arranged under the machine body, and is characterized in that: a reciprocating rocking arm is arranged on the machine body, a shoveling body capable of shoveling downward and backward is arranged at the front end of the rocking arm, and a driving device for driving the rocking arm to swing is arranged on the machine body. The purpose of the present invention is to overcome the deficiencies of the prior art and provide a portable multi-purpose agricultural machine with a simple structure, light weight, easy operation, suitable for use in small sites and complex terrains, which can avoid entanglement of debris during operation, is safer and more durable, and can realize the functions of digging, ditching and weeding, and can replace the traditional hoe.

[0004] However, due to the common problems of large surface undulations and uneven soil hardness in complex terrain (such as mountains, terraces, gullies, etc.), traditional models have poor terrain adaptability, fixed walking wheelbase, resulting in severe body bumps, insufficient operational stability, and prone to rollover accidents, especially when operating on slopes. Therefore, there is an urgent need to design a small agricultural machine suitable for complex terrain to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a small agricultural machine suitable for complex terrain to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A small-sized agricultural machine suitable for complex terrain comprises a power assembly, the power assembly comprises a box, an outer wall of one side of the box is provided with two mounting grooves, an installation area is provided on the top of the box, a wheel assembly is provided inside the installation area, the wheel assembly comprises a mounting frame, the mounting frame is installed inside the box by bolts, a connecting shaft is installed inside the mounting frame by bearings, and pulleys are installed at both ends of the connecting shaft by flat keys, a driven gear is installed outside the connecting shaft by flat keys, a driving motor is installed on the outer wall of one side of the mounting frame by bolts, and a driving gear is installed at the output end of the driving motor by flat keys, the driving gear and the driven gear are meshed with each other, the wheel assembly also comprises two support plates, the two support plates are respectively connected by bolts It is installed on both sides of the inner wall of the box body, an electric push rod is installed on the outer wall of one side of the top of the support plate by bolts, and a sliding block is installed on the output end of the electric push rod by bolts, the sliding block is slidably connected to the inside of the installation groove, a connecting pulley shaft is installed on the outer wall of one side of the sliding block by a bearing, and an elastic belt is sleeved between the connecting pulley shaft and the pulley, and a wheel is installed on one end of the connecting pulley shaft by a flat key, two distance measuring sensors are installed on the outer wall of one side of the box body by bolts, a power module is installed inside the box body by bolts, and the power module is electrically connected to the distance measuring sensor, the electric push rod and the driving motor by wires, a box cover is installed on the outer wall of one side of the top of the box body by a movable hinge, and two handles are installed on the outer wall of one side of the box body by bolts.

[0007] Furthermore, a soil-turning assembly is installed on the outer wall of one side of the power assembly by bolts, and the soil-turning assembly includes a connecting frame, and push rod motors are installed on the outer walls on both sides of the bottom of the connecting frame by bolts, and a connecting plate is installed on the output end of the push rod motor by bolts, an electric roller is installed between the two connecting plates through a bearing, and a plurality of soil-turning knives are installed on the outside of the electric roller through a flat key, a battery module is installed on the top of the inner wall of the connecting frame by bolts, and the battery module is electrically connected to the electric roller and the push rod motor through wires.

[0008] Furthermore, a ridging assembly is installed on an outer wall of one side of the power assembly by bolts, and the ridging assembly includes a box frame, three guide cylinders are installed on the outer wall of one side of the bottom of the box frame by bolts, and a tilling knife is slidably inserted inside the guide cylinder, three transmission screws are installed inside the box frame by bearings, and the three transmission screws are respectively located inside the three guide cylinders, two of which are equipped with driven sprockets on the top ends by flat keys, and the bottom ends of the three transmission screws are threadedly connected to the tilling knife, a rotating handle is installed at the center of the top of the box frame by a bearing, and the bottom end of the rotating handle is transmission-connected to the top end of another transmission screw by a coupling, a driving sprocket is installed on the bottom end of the rotating handle by a flat key, and a chain is installed between the driving sprocket and the two driven sprockets.

[0009] In the above technical solution, the present invention provides a small agricultural machine suitable for complex terrain, which has the following beneficial effects: (1) The present invention uses a distance measuring sensor to detect the height difference of the terrain on both sides in real time. When one side of the agricultural machine is tilted, the output end of the electric push rod driven by the agricultural machine will push the sliding block to slide along the installation groove, so that the height between the box and the ground changes, which significantly reduces the bump amplitude on the rugged road surface. In addition, the flexible transmission of the elastic belt compensates for the impact of sudden terrain changes, which greatly reduces the risk of rollover compared with traditional fixed wheelbase models.

[0010] (2) When the tiller assembly designed by the present invention is used in an agricultural machine, the push rod motor of the tiller assembly will drive the connecting plate to rise and fall. Combined with the adjustable speed design of the electric roller, the depth of the tiller blade can be dynamically controlled to adapt to different soil hardnesses such as clay and sand.

[0011] (3) The ridge assembly designed by the present invention, when used in an agricultural machine, drives the active sprocket by rotating the handle, and three transmission screws linked with the chain to achieve the synchronous lifting and lowering of the three tilling knives, which greatly reduces the fluctuation range of the ridge height and is significantly better than the manual adjustment model.

[0012] (4) The present invention is particularly suitable for complex terrain scenes such as hilly slopes, terraced gullies and greenhouses, and has significant advantages in operations such as loosening the soil, ridging and weeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the overall structure of an embodiment of a small agricultural machine suitable for complex terrain provided by the present invention.

[0015] Figure 2 A schematic diagram of the structure of a box and a power assembly provided for an embodiment of a small agricultural machine suitable for complex terrains according to the present invention.

[0016] Figure 3 A schematic diagram of the structure of a box and a power module provided for an embodiment of a small agricultural machine suitable for complex terrains according to the present invention.

[0017] Figure 4 A schematic diagram of a box rollover structure provided for an embodiment of a small agricultural machine suitable for complex terrains according to the present invention.

[0018] Figure 5A schematic diagram of the structure of a wheel assembly provided for an embodiment of a small agricultural machine suitable for complex terrains according to the present invention.

[0019] Figure 6 A schematic diagram of a mounting frame, a connecting shaft and a wheel structure provided for an embodiment of a small agricultural machine suitable for complex terrain according to the present invention.

[0020] Figure 7 A schematic diagram of the structure of a soil ridge assembly is provided for an embodiment of a small agricultural machine suitable for complex terrains according to the present invention.

[0021] Figure 8 A schematic diagram of a frame, a guide cylinder and a tilling blade structure provided for an embodiment of a small-sized agricultural tilling machine suitable for complex terrain according to the present invention.

[0022] Fig. 9 A schematic diagram of a box frame, a guide cylinder and a transmission screw structure provided for an embodiment of a small-sized agricultural machine suitable for complex terrain according to the present invention.

[0023] Fig.10 A schematic diagram of the structure of a box frame, a driving sprocket and a transmission sprocket provided in an embodiment of the present invention for a small-sized agricultural machine suitable for complex terrain.

[0024] Fig.11 A schematic diagram of the structure of a soil turning component provided for an embodiment of a small agricultural tilling machine suitable for complex terrains according to the present invention.

[0025] Fig.12 A schematic diagram of the structure of a connecting frame, an electric roller and a tiller provided in an embodiment of a small agricultural machine suitable for complex terrain according to the present invention.

[0026] Description of reference numerals: 1. Power assembly; 2. Ridging assembly; 3. Soil turning assembly; 4. Box body; 5. Handle; 6. Wheel assembly; 7. Box cover; 8. Power module; 9. Installation area; 10. Installation slot; 11. Distance sensor; 12. Mounting frame; 13. Drive motor; 14. Connecting shaft; 15. Wheel; 16. Pulley; 17. Support plate; 18. Electric push rod; 19. Sliding block; 20. Connecting pulley shaft; 21. Elastic belt; 22. Driving gear; 23. Driven gear; 24. Box frame; 25. Guide cylinder; 26. Cultivating blade; 27. Turning handle; 28. Driven sprocket; 29. ​​Transmission screw; 30. Chain; 31. Driving sprocket; 32. Connecting frame; 33. Connecting plate; 34. Push rod motor; 35. Electric roller; 36. Cultivating blade; 37. Battery module. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-12 As shown, a small-sized agricultural machine suitable for complex terrain provided by an embodiment of the present invention includes a power assembly 1, the power assembly 1 includes a box body 4, an outer wall of one side of the box body 4 is provided with two mounting grooves 10, a mounting area 9 is provided on the top of the box body 4, a wheel assembly 6 is provided inside the mounting area 9, and the wheel assembly 6 includes a mounting frame 12, the mounting frame 12 is installed inside the box body 4 by bolts, a connecting shaft 14 is installed inside the mounting frame 12 by bearings, and pulleys 16 are installed at both ends of the connecting shaft 14 by flat keys, a driven gear 23 is installed outside the connecting shaft 14 by flat keys, a driving motor 13 is installed on the outer wall of one side of the mounting frame 12 by bolts, and the driving motor 1 The preferred model is BLDC-500W. The driving motor 13 drives the connecting shaft 14 to rotate through the driving gear 22 and the driven gear 23, driving the pulleys 16 at both ends to rotate synchronously. The elastic belt 21 transmits power to the connecting pulley shaft 20 to drive the wheel 15 to move. The output end of the driving motor 13 is equipped with a driving gear 22 through a flat key. The driving gear 22 and the driven gear 23 are meshed with each other. The wheel body assembly 6 also includes two support plates 17, which are respectively installed on both sides of the inner wall of the box body 4 by bolts. The outer wall of one side of the top of the support plate 17 is equipped with an electric push rod 18 by bolts. The model of the electric push rod 18 is preferably LA30-50 0N, and the output end of the electric push rod 18 is installed with a sliding block 19 through bolts, and the sliding block 19 is slidably connected inside the installation groove 10. A connecting pulley shaft 20 is installed on the outer wall of one side of the sliding block 19 through a bearing, and an elastic belt 21 is sleeved between the connecting pulley shaft 20 and the pulley 16. The elastic belt 21 compensates for the transmission gap to ensure continuous power transmission. A wheel 15 is installed at one end of the connecting pulley shaft 20 through a flat key. The electric push rod 18 drives the wheel 15 to move laterally through the sliding block 19 to achieve wheel spacing adjustment. Two distance sensors 11 are installed on the outer wall of one side of the box body 4 through bolts. The model of the distance sensor 11 is preferably LDM30-5M. The distance measuring sensor 11 is installed on both sides of the box body 4 to detect the height difference of the terrain on both sides in real time and feed it back to the power module 8 control system. The power module 8 is installed inside the box body 4 by bolts. The power module 8 is divided into a control part and a battery part. The operation of the device can be controlled by workers, and the power module 8 is electrically connected to the distance measuring sensor 11, the electric push rod 18 and the drive motor 13 through wires. A box cover 7 is installed on the outer wall of one side of the top of the box body 4 through a movable hinge. Two handles 5 are installed on the outer wall of one side of the box body 4 by bolts. The handles 5 are provided with operating switches and handles. The device can be supported by the handles 5 to control the movement of the device.

[0029] The present invention provides a small agricultural machine suitable for complex terrain. The distance measuring sensor 11 detects the height difference of the terrain on both sides in real time. When one side of the agricultural machine is tilted, the output end of the electric push rod 18 driven by the agricultural machine will push the sliding block 19 to slide along the installation groove 10, so that the height of the box body 4 and the ground changes, which significantly reduces the bump amplitude of the rugged road surface. In addition, the flexible transmission of the elastic belt 21 compensates for the sudden impact of the terrain, and the risk of rollover is greatly reduced compared with the traditional fixed wheelbase model.

[0030] In one embodiment provided by the present invention, Figure 1 and Figure 11-12 As shown, a soil turning component 3 is installed on the outer wall of one side of the power component 1 by bolts, and the soil turning component 3 includes a connecting frame 32. Push rod motors 34 are installed on the outer walls on both sides of the bottom of the connecting frame 32 by bolts. The model of the push rod motor 34 is preferably LA40-800N. The cutting depth of the soil turning knife 36 is controlled by the stroke of the push rod motor 34 to adapt to different soil hardnesses. A connecting plate 33 is installed on the output end of the push rod motor 34 by bolts, and an electric roller 35 is installed between the two connecting plates 33 by bearings. The model of the electric roller 35 is preferably DRG-150-300W. The electric roller 35 automatically adjusts the speed according to the soil resistance to ensure the uniformity of soil crushing by the soil turning knife 36, and a plurality of soil turning knives 36 are installed on the outside of the electric roller 35 by flat keys. A battery module 37 is installed on the top of the inner wall of the connecting frame 32 by bolts. The battery module 37 uses LFP-24V15Ah to avoid competing for power resources with the power component 1, and the battery module 37 is electrically connected to the electric roller 35 and the push rod motor 34 through wires.

[0031] In another embodiment provided by the present invention, Figure 1 and Figure 7-10As shown, a soil ridge component 2 is installed on the outer wall of one side of the power component 1 by bolts, and the soil ridge component 2 includes a box frame 24, and three guide cylinders 25 are installed on the outer wall of one side of the bottom of the box frame 24 by bolts. The interior of the guide cylinder 25 is a rectangular structure, and a tiller 26 is slidably inserted in the interior of the guide cylinder 25. The tiller 26 can ridge the soil, and three transmission screws 29 are installed in the box frame 24 through bearings, and the three transmission screws 29 are respectively located in the three guide cylinders 25, among which two transmission screws 29 are installed with driven sprockets 28 at the top through flat keys, and the bottom ends of the three transmission screws 29 are threadedly connected to the tiller 26, and a rotating handle 27 is installed at the center of the top of the box frame 24 through a bearing, and the rotating handle The bottom end of the handle 27 is transmission-connected to the top end of another transmission screw 29 through a coupling. A driving sprocket 31 is installed at the bottom end of the rotating handle 27 through a flat key. The angle between the driving sprocket 31 and the chain 30 between the driven sprocket 28 is greater than one hundred and twenty degrees, and a chain 30 is installed between the driving sprocket 31 and the two driven sprockets 28. The driving sprocket 31 is driven to rotate by rotating the handle 27, and the two driven sprockets 28 are linked by the chain 30 to make the three transmission screws 29 rotate synchronously. The threaded cooperation of the transmission screw 29 and the tiller blade 26 converts the rotational motion into a linear lifting and lowering of the tiller blade 26 in the guide cylinder 25, thereby ensuring that the three groups of tiller blades 26 are of the same height and the fluctuation range of the ridge height is greatly reduced.

[0032] Working principle: The driving motor 13 drives the connecting shaft 14 to rotate through the engagement of the driving gear 22 and the driven gear 23, driving the pulleys 16 at both ends to rotate synchronously, and the elastic belt 21 transmits power to the connecting pulley shaft 20 to drive the wheel 15 to move. The distance measuring sensors 11 on both sides of the box 4 detect the terrain height difference in real time. When a single-sided tilt is detected, the power module 8 controls the electric push rod 18 to push the sliding block 19 to slide along the installation groove 10, adjust the distance between the wheels 15 on both sides, and keep the box 4 level. At the same time, the elastic belt 21 compensates the wheel 15 through its own elastic deformation. The transmission gap caused by displacement avoids power interruption and significantly reduces the bump amplitude and roll risk on rugged roads. When the agricultural machine is in operation, the soil turning component 3 drives the connecting plate 33 to rise and fall through the push rod motor 34, driving the electric roller 35 and the soil turning knife 36 to adjust the tillage depth. The electric roller 35 is subsequently operated to rotate, and the electric roller 35 will rotate with multiple soil turning knives 36 to turn the soil. When turning the soil, the rotation speed of the electric roller 35 can be controlled according to the hardness of the soil to ensure the uniformity and soil crushing efficiency of the soil turning knife 36, so as to achieve a depth range of 5-25cm. The dynamic and precise control within the soil furrow assembly 2 is realized; at the same time, when the soil furrow assembly 2 furrows the soil, the handle 27 can be turned to drive the active sprocket 31 to rotate, and the two driven sprockets 28 can be linked through the chain 30 to make the three transmission screws 29 rotate synchronously. The transmission screw 29 cooperates with the thread of the tilling blade 26 to convert the rotational motion into a linear lifting and lowering of the tilling blade 26 in the guide cylinder 25, so as to ensure that the heights of the three groups of tilling blades 26 are consistent, and the fluctuation range of the ridge ditch height is greatly reduced. In addition, the guide cylinder 25 limits the lateral displacement of the tilling blade 26, and the smooth surface design of the tilling blade 26 effectively reduces the entanglement of weeds; and the synergistic effect When working, the terrain adaptive ability of the power component 1 ensures the stability of the fuselage through dynamic wheelbase adjustment. The soil-turning component 3 and the ridging component 2 independently perform the tasks of loosening the soil and ridging, respectively, and support single-function or combined operation modes; the power module 8 and the battery module 37 are separately powered to ensure continuous operation time; the top of the box body 4 can open and close the box cover 7 for easy maintenance, and the handle 5 design improves portability; the present invention is particularly suitable for complex terrain scenes such as hilly slopes, terraced gullies and greenhouses, and solves the technical defects of traditional agricultural machines such as poor terrain adaptability, single tillage function and power interruption.

[0033] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A small agricultural machine suitable for use on complex terrain, comprising a power assembly (1), characterized in that: The power assembly (1) comprises a box (4), the outer wall of one side of the box (4) is provided with two mounting grooves (10), the top of the box (4) is provided with a mounting area (9), a wheel assembly (6) is provided inside the mounting area (9), the wheel assembly (6) comprises a mounting frame (12), the mounting frame (12) is mounted inside the box (4) by bolts, a connecting shaft (14) is mounted inside the mounting frame (12) by bearings, and pulleys (16) are mounted on both ends of the connecting shaft (14) by flat keys, a driven gear (23) is mounted on the outside of the connecting shaft (14) by flat keys, a driving motor (13) is mounted on the outer wall of one side of the mounting frame (12) by bolts, and a driving gear (22) is mounted on the output end of the driving motor (13) by flat keys, and the driving gear (23) The driven gear (22) is meshed with the driven gear (23), the wheel assembly (6) further comprising two support plates (17), the two support plates (17) being respectively mounted on both sides of the inner wall of the housing (4) by bolts, an electric push rod (18) being mounted on the outer wall of the top side of the support plate (17) by bolts, and a sliding block (19) being mounted on the output end of the electric push rod (18) by bolts, the sliding block (19) being slidably connected inside the mounting groove (10), a connecting pulley shaft (20) being mounted on the outer wall of one side of the sliding block (19) by a bearing, an elastic belt (21) being sleeved between the connecting pulley shaft (20) and the pulley (16), a wheel (15) being mounted on one end of the connecting pulley shaft (20) by a flat key, and two distance measuring sensors (11) being mounted on the outer wall of one side of the housing (4) by bolts.

2. A small agricultural machine suitable for complex terrain according to claim 1, characterized in that: A power module (8) is installed inside the box (4) by means of bolts, and the power module (8) is electrically connected to the distance measuring sensor (11), the electric push rod (18) and the drive motor (13) respectively through wires.

3. A small agricultural machine suitable for complex terrain according to claim 2, characterized in that: A box cover (7) is mounted on an outer wall on one side of the top of the box body (4) via a movable hinge, and two handles (5) are mounted on an outer wall on one side of the box body (4) via bolts.

4. A small agricultural machine suitable for complex terrain according to claim 1, characterized in that: A soil ridge assembly (2) is mounted on an outer wall of one side of the power assembly (1) via bolts, and a soil turning assembly (3) is mounted on an outer wall of one side of the power assembly (1) via bolts.

5. A small agricultural machine suitable for complex terrain according to claim 4, characterized in that: The soil turning assembly (3) comprises a connecting frame (32), and push rod motors (34) are mounted on both sides of the outer walls at the bottom of the connecting frame (32) via bolts, and a connecting plate (33) is mounted on the output end of the push rod motor (34) via bolts.

6. A small agricultural machine suitable for complex terrain according to claim 5, characterized in that: An electric roller (35) is mounted between the two connecting plates (33) via a bearing, and a plurality of soil turning knives (36) are mounted on the outside of the electric roller (35) via a flat key.

7. The small agricultural machine suitable for complex terrain according to claim 5, characterized in that: A battery module (37) is installed on the top of the inner wall of the connecting frame (32) via bolts, and the battery module (37) is electrically connected to the electric roller (35) and the push rod motor (34) via wires.

8. The small agricultural machine suitable for complex terrain according to claim 4, characterized in that: The soil ridging assembly (2) comprises a box frame (24), three guide cylinders (25) are mounted on an outer wall on one side of the bottom of the box frame (24) via bolts, and a tilling blade (26) is slidably inserted into the inside of the guide cylinder (25).

9. A small agricultural machine suitable for complex terrain according to claim 8, characterized in that: Three transmission screws (29) are installed inside the box frame (24) via bearings, and the three transmission screws (29) are respectively located inside three guide cylinders (25), wherein the top ends of two of the transmission screws (29) are installed with driven sprockets (28) via flat keys, and the bottom ends of the three transmission screws (29) are threadedly connected to the tiller blade (26).

10. A small agricultural machine suitable for complex terrain according to claim 9, characterized in that: A rotating handle (27) is installed at the center of the top of the box frame (24) through a bearing, and the bottom end of the rotating handle (27) is transmission-connected to the top end of another driving screw (29) through a coupling, and a driving sprocket (31) is installed at the bottom end of the rotating handle (27) through a flat key, and a chain (30) is installed between the driving sprocket (31) and the two driven sprockets (28).

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