Weeding device with adjustable weeding depth mechanism

Abstract

The present invention relates to the technical field of weeding devices, and in particular to a weeding device with an adjustable weeding depth mechanism, comprising a mobile cart, a bearing base, a supporting bottom tube, a movable tube, a supporting cross plate, a lifting mechanism, an angle adjustment mechanism, a U-shaped frame, a driving motor, an installation box, a plurality of straight-edged blades movably arranged on the side wall of the installation box in a ring-shaped and equidistant manner, an arc-edged blade arranged below the straight-edged blade and slidably connected to the side wall of the installation box, and a telescopic mechanism arranged in the installation box, wherein the telescopic mechanism has a first power output end and a second power output end, the first power output end is used to drive all the straight-edged blades to move radially along the installation box, and the second power output end is used to drive all the arc-edged blades to move radially along the installation box, the driving motor is transmission-connected to the installation box, and the device can meet the weeding work requirements at different heights, can flexibly switch the weeding blades, and improve work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of weeding devices, and in particular to a weeding device with an adjustable weeding depth mechanism. Background Art

[0002] Weeds are the breeding ground for pests and diseases, and they easily attract pests to parasitize and cause lawn plants to become sick. Timely weeding is extremely important to reduce pests and diseases and ensure the health of lawns. Lawns are widely used in gardens, communities and other places. When weeds grow to a certain extent, they need to be cleared with weeding equipment.

[0003] When weeding, choose the appropriate weeding blade according to the type, thickness and height of the weeds. In landscape gardens or flower beds, weeding should protect the flowers and other landscape plants, and only the tops of the weeds need to be cut; in plantations, the above-ground parts of the weeds need to be removed.

[0004] For cutting tall weeds, straight blades are more suitable. Their straight edges can cut weeds cleanly with greater cutting force, which is more effective for dealing with tall aquatic weeds or tall weeds in the field. For cutting short weeds, curved blades are better. They can fit the curvature of the ground and cut deep into the roots. If the curved blade has serrations, it will be more effective for cutting weed roots.

[0005] However, most existing weeding equipment cannot take into account these two different working environments. Therefore, it is necessary to design a weeding device with flexible adjustable weeding depth to meet complex weeding needs and provide efficient and accurate assistance for greening maintenance. Summary of the invention

[0006] Based on this, it is necessary to provide a weeding device with an adjustable weeding depth mechanism to address the problems of the prior art.

[0007] To solve the problems of the prior art, the technical solution adopted by the present invention is: a weeding device with an adjustable weeding depth mechanism, comprising a mobile cart, a bearing base fixedly arranged on the mobile cart, a supporting bottom tube rotatably arranged on the bearing base, a movable tube coaxially keyed with the supporting bottom tube, a supporting cross plate fixedly arranged on the top of the movable tube, a lifting mechanism for driving the movable tube to move up and down in the supporting bottom tube, an angle adjustment mechanism for adjusting the rotation angle of the supporting bottom tube in the bearing base, a U-shaped frame fixedly arranged at the bottom of the supporting cross plate, a driving motor fixedly arranged on the U-shaped frame, an installation box rotatably arranged on an end of the supporting cross plate away from the movable tube, a plurality of straight-edged blades movably arranged on the side wall of the installation box at equal intervals in an annular shape, an arc-edged blade arranged below the straight-edged blade and slidably connected to the side wall of the installation box, and a telescopic mechanism arranged in the installation box, the telescopic mechanism having a first power output end and a second power output end, the first power output end being used to drive all the straight-edged blades to move radially along the installation box, the second power output end being used to drive all the arc-edged blades to move radially along the installation box, and the driving motor being transmission-connected to the installation box.

[0008] Furthermore, the lifting mechanism includes a threaded tube coaxially fixed in the supporting bottom tube, a threaded rod coaxially rotatably arranged in the movable tube, and a rotating handle coaxially fixed at the top of the threaded rod, and the threaded rod is coaxially threadedly connected to the threaded tube.

[0009] Furthermore, the angle adjustment mechanism includes a limiting arc bar fixedly arranged on the mobile trolley, a positioning ring coaxially fixedly arranged on the supporting bottom tube, a positioning support plate fixedly arranged on the positioning ring, a locking rod elastically slidably arranged on the positioning support plate, a plurality of positioning holes in a ring shape opened on the bearing base, a telescopic rod arranged at the bottom of the U-shaped frame and a pushing handle fixedly arranged on the telescopic rod, the top of the telescopic rod is fixedly connected to the U-shaped frame, and the bottom of the telescopic rod is slidably matched with the limiting arc bar.

[0010] Furthermore, a driving wheel is coaxially fixed on the output shaft of the driving motor, a lifting shaft and a lifting ring are coaxially fixed on the mounting box, a limiting ring is fixedly arranged at the bottom of the end of the supporting cross plate away from the movable tube, the lifting shaft is rotatably connected to the supporting cross plate, a driven wheel is coaxially rotatably arranged on the lifting shaft, the lifting ring is coaxially rotatably connected to the limiting ring, and a connecting belt is arranged between the driving wheel and the driven wheel.

[0011] Furthermore, the telescopic mechanism includes a supporting circular plate coaxially rotatably arranged in the installation box, a toggle gear ring coaxially fixedly arranged on the top of the supporting circular plate, a plurality of bearing supports fixedly arranged in an annular shape on the top of the installation box, a toggle shaft rotatably arranged on each bearing support, a toggle bevel gear coaxially fixedly arranged on each toggle shaft, an inner angle wrench groove opened at one end of each toggle shaft away from the toggle bevel gear, a limiting spiral groove opened at the bottom of the supporting circular plate, a plurality of supporting straight plates slidably arranged on the side walls of the installation box, limiting support blocks symmetrically arranged on both sides of each supporting straight plate and fixedly connected to the side walls of the installation box, and a limiting arc block fixedly arranged on each supporting straight plate, the number of the limiting arc blocks is at least two, the limiting arc blocks are slidably matched with the limiting spiral grooves, the straight-edge blades are fixedly arranged on both sides of the supporting straight plate, and the toggle bevel gears are meshed with the toggle gear rings.

[0012] Furthermore, the supporting circular plate is the first power output end of the telescopic mechanism.

[0013] Furthermore, the telescopic mechanism also includes a limit bracket arranged under each supporting straight plate and fixedly connected to the two limit support blocks, a transmission gear rotatably arranged on the limit bracket, a limit rack arranged under the supporting straight plate, a transmission bevel gear coaxially fixedly connected to the transmission gear, a bearing support plate arranged under the limit bracket and fixedly connected to the inner wall of the installation box, a sliding arc box slidably arranged on the bearing support plate, and an arc rack fixedly arranged on the sliding arc box, the transmission gear is meshed with the limit rack, the transmission bevel gear is meshed with the arc rack, and the arc blade is fixedly arranged on the side wall of the sliding arc box.

[0014] Furthermore, the arc-shaped rack is the second power output end of the telescopic mechanism.

[0015] Furthermore, an air blower is fixedly arranged at the bottom of the installation box, a switching air duct coaxially fixedly arranged at the bottom of the installation box, an air supply ring coaxially rotatably arranged on the switching air duct, an expansion air bag arranged in each sliding arc box, a plurality of fastening rings fixedly arranged on the expansion air bag at equal intervals, a cutting blade fixedly arranged on each fastening ring and an air supply pipe arranged on each expansion air bag, one end of the air supply pipe is connected to the expansion air bag, and the other end is connected to the air supply ring.

[0016] Furthermore, a plurality of toggle grooves are provided in a circular shape and are evenly spaced on the side wall of the supporting circular plate, a plurality of accommodating grooves are provided in a circular shape and are evenly spaced on the side wall of the mounting box, a support rod is fixedly arranged in each accommodating groove, a toggle block provided on each support rod is rotated by a torsion spring, a sliding arc plate provided on each accommodating groove is slidably arranged, mounting rods are symmetrically fixed at both ends of the sliding arc plate, four brush rods are provided on the mounting rods, the brush rods are arranged in groups of two, one group of brush rods is used to clean the straight-edge blade, and the other group is used to clean the arc-edge blade, and the toggle block is hinged to the sliding arc plate at one end close to the sliding arc plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] First: This device can flexibly adjust the corresponding weeding blade according to different weeding working environments, ensuring that the equipment can meet complex weeding needs and improve work efficiency;

[0019] Second, the device can automatically extend the cutting blade to form a serrated weeding blade for weeds with thicker root fibers by setting an expansion air bag in the sliding arc box, thereby improving the weeding efficiency;

[0020] Thirdly, the device can automatically clean the straight blade and the arc blade by setting a swinging brush rod. When the two blades are switched, weed debris on the blades are automatically removed to extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional structure of the embodiment is shown in FIG. Figure 1 ;

[0022] Figure 2 The three-dimensional structure of the embodiment is shown in FIG. Figure 2 ;

[0023] Figure 3 yes Figure 2 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 4 is a cross-sectional view of an embodiment Figure 1;

[0025] Figure 5 is a cross-sectional view of an embodiment Figure 2 ;

[0026] Figure 6 yes Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0027] Figure 7 It is a schematic diagram of the exploded three-dimensional structure of the installation box and the supporting horizontal plate of the embodiment;

[0028] Figure 8 is a schematic diagram of the three-dimensional structure of the installation box of the embodiment;

[0029] Fig. 9 is a schematic diagram of the three-dimensional structure of the supporting circular plate of the embodiment;

[0030] Fig.10 is a schematic diagram of a three-dimensional structure explosion of a transmission gear of an embodiment;

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the sliding arc plate of the embodiment.

[0032] The numbers in the figure are: 1. Mobile cart; 2. Limit arc bar; 3. Load-bearing base; 4. Support bottom tube; 5. Movable tube; 6. Support cross plate; 7. Driven wheel; 8. Connecting belt; 10. Threaded tube; 11. Threaded rod; 12. Rotating handle; 13. Positioning ring; 14. Positioning support plate; 15. Locking rod; 16. Positioning hole; 17. U-shaped frame; 18. Driving motor; 19. Driving wheel; 20. Telescopic rod; 21. Push handle; 22. Limiting ring; 23. Lifting ring; 24. Lifting shaft; 25. Installation box; 26. Load-bearing support; 27. Toggle shaft; 28. Toggle bevel gear; 29. ​​Internal angle wrench slot; 30. Support circle Plate; 31. Toggle gear ring; 32. Limit spiral groove; 33. Toggle groove; 34. Limit support block; 35. Support straight plate; 36. Straight blade; 37. Limit arc block; 38. Limit rack; 39. Limit bracket; 40. Transmission gear; 41. Transmission bevel gear; 42. Bearing support plate; 43. Sliding arc box; 44. Arc rack; 45. Arc blade; 46. Inflatable airbag; 47. Fastening ring; 48. Cutting edge; 49. Receiving groove; 50. Support rod; 51. Toggle block; 52. Sliding arc plate; 53. Mounting rod; 54. Brush rod; 55. Blower; 56. Adapter duct; 57. Air supply ring; 58. Air supply pipe. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] refer to Figures 1 to 11 :

[0035] A weeding device with an adjustable weeding depth mechanism comprises a mobile cart 1, a bearing base 3 fixedly arranged on the mobile cart 1, a supporting bottom tube 4 rotatably arranged on the bearing base 3, a movable tube 5 coaxially keyed with the supporting bottom tube 4, a supporting cross plate 6 fixedly arranged on the top of the movable tube 5, a lifting mechanism for driving the movable tube 5 to move up and down in the supporting bottom tube 4, an angle adjustment mechanism for adjusting the rotation angle of the supporting bottom tube 4 in the bearing base 3, a U-shaped frame 17 fixedly arranged at the bottom of the supporting cross plate 6, a driving motor 18 fixedly arranged on the U-shaped frame 17, an installation box 25 rotatably arranged at one end of the supporting cross plate 6 away from the movable tube 5, a plurality of straight-edged blades 36 movably arranged on the side wall of the installation box 25 in an annular shape and at equal intervals, and a plurality of straight-edged blades 36 (such as Fig. 9 As shown in the figure, an arc-edged blade 45 is below the mounting box 25 and is slidably connected to the side wall of the mounting box 25, and a telescopic mechanism is arranged in the mounting box 25, the telescopic mechanism has a first power output end and a second power output end, the first power output end is used to drive all the straight-edged blades 36 to move radially along the mounting box 25, and the second power output end is used to drive all the arc-edged blades 45 to move radially along the mounting box 25, and the drive motor 18 is transmission-connected to the mounting box 25.

[0036] When the device is in operation, workers can determine the height and angle of the weeding equipment according to the lifting mechanism and the angle adjustment mechanism, and then adjust the appropriate weeding blade according to the weeding needs by using the telescopic mechanism. The lifting mechanism adjusts the height of the movable tube 5 in the supporting bottom tube 4 to ensure that the supporting cross plate 6 can be located at a suitable working height with the installation box 25. The angle adjustment mechanism can adjust the rotation position of the supporting cross plate 6 to ensure that the installation box 25 can be in the best working position. When it is necessary to cut high weeds, the first power output end drives all the straight blades 36 to extend radially along the installation box 25 (at this time, the arc blade 45 is retracted in the installation box 25), and then the drive motor 18 drives the installation box 25 to rotate and start weeding. When it is necessary to cut low weeds, the first power output end drives the straight blade 36 to retract into the installation box 25, and the second power output end drives the arc blade 45 to extend from the installation box 25, and then the drive motor 18 drives the installation box 25 to rotate and weed. Through the above equipment, the device can complete weeding in different working environments.

[0037] In order to show the detailed structure of the lifting mechanism, the following features are also set:

[0038] The lifting mechanism includes a threaded tube 10 coaxially fixedly arranged in the supporting bottom tube 4, a threaded rod 11 coaxially rotatably arranged in the movable tube 5, and a rotating handle 12 coaxially fixedly arranged at the top of the threaded rod 11. The threaded rod 11 is coaxially threadedly connected with the threaded tube 10.

[0039] When the device is running, the threaded rod 11 is rotated by twisting the rotating handle 12. The threaded rod 11 rotates along the axis of the threaded tube 10 under the action of the thread. The movement of the threaded rod 11 drives the movable tube 5 to move in the supporting bottom tube 4, ensuring that the equipment can reach a suitable weeding height.

[0040] In order to show the detailed structure of the angle adjustment mechanism, the following features are also set:

[0041] The angle adjustment mechanism includes a limiting arc strip 2 fixedly arranged on the mobile cart 1, a positioning ring 13 coaxially fixedly arranged on the supporting bottom tube 4, a positioning support plate 14 fixedly arranged on the positioning ring 13, a locking pull rod 15 elastically slidably arranged on the positioning support plate 14, a plurality of positioning holes 16 arranged in a ring shape on the bearing base 3, a telescopic rod 20 arranged at the bottom of the U-shaped frame 17 and a pushing handle 21 fixedly arranged on the telescopic rod 20, the top of the telescopic rod 20 is fixedly connected to the U-shaped frame 17, and the bottom of the telescopic rod 20 is slidably matched with the limiting arc strip 2.

[0042] It should be noted that, in the initial state, the locking rod 15 is inserted in the positioning hole 16. When the device is running, the locking rod 15 is first pulled out of the positioning hole 16, and then the telescopic rod 20 is pushed to slide on the limiting arc bar 2 through the pushing handle 21 on the telescopic rod 20, so that the supporting cross plate 6 is rotated by a certain angle, and then the locking rod 15 is elastically reset and reinserted into the positioning hole 16 to ensure the stable operation of the subsequent equipment.

[0043] In order to show the connection relationship between the drive motor 18 and the mounting box 25, the following features are also specifically provided:

[0044] A driving wheel 19 is coaxially fixedly arranged on the output shaft of the driving motor 18, and a hoisting shaft 24 and a hoisting ring 23 (such as Figure 5 As shown in the figure, a limit ring 22 is fixedly provided at the bottom of one end of the supporting horizontal plate 6 away from the movable tube 5, a lifting shaft 24 is rotationally connected to the supporting horizontal plate 6, a driven wheel 7 is coaxially rotated on the lifting shaft 24, a lifting ring 23 is coaxially rotated with the limit ring 22, and a connecting belt 8 is provided between the driving wheel 19 and the driven wheel 7.

[0045] When the device is running, the driving motor 18 drives the active wheel 19 to rotate. The rotation of the active wheel 19 drives the driven wheel 7 to rotate through the connecting belt 8. The rotation of the driven wheel 7 drives the lifting shaft 24 to rotate. The rotation of the lifting shaft 24 drives the installation box 25 to rotate. When the installation box 25 rotates, the installation box 25 also rotates on the limiting ring 22 with the lifting ring 23. The cooperation between the lifting ring 23 and the limiting ring 22 reduces the load of the lifting shaft 24. Most of the weight of the installation box 25 is borne by the lifting ring 23. The lifting shaft 24 only drives the installation box 25 to rotate, thereby ensuring that the installation box 25 can rotate stably.

[0046] In order to show the detailed structure of the telescopic mechanism, the following features are also set:

[0047] The telescopic mechanism includes a supporting circular plate 30 coaxially rotatably arranged in the installation box 25, a toggle gear ring 31 coaxially fixedly arranged on the top of the supporting circular plate 30, a plurality of bearing supports 26 annularly fixedly arranged on the top of the installation box 25, a toggle shaft 27 rotatably arranged on each bearing support 26, a toggle bevel gear 28 coaxially fixedly arranged on each toggle shaft 27, an inner angle wrench groove 29 provided at one end of each toggle shaft 27 away from the toggle bevel gear 28, and a toggle gear 29 provided at the bottom of the supporting circular plate 30. A limiting spiral groove 32, a plurality of supporting straight plates 35 slidably arranged on the side walls of the installation box 25, limiting brackets 34 symmetrically arranged on both sides of each supporting straight plate 35 and fixedly connected to the side walls of the installation box 25, and a limiting arc block 37 fixedly arranged on each supporting straight plate 35, the number of the limiting arc blocks 37 is at least two, the limiting arc blocks 37 are slidably matched with the limiting spiral groove 32, the straight-edge blades 36 are fixedly arranged on both sides of the supporting straight plate 35, and the toggle bevel teeth 28 are engaged with the toggle gear ring 31.

[0048] The supporting circular plate 30 is the first power output end of the telescopic mechanism.

[0049] When the device is running, the toggle shaft 27 is twisted by the inner corner handle, and the rotation of the toggle shaft 27 drives the toggle bevel gear 28 to rotate, and the rotation of the toggle bevel gear 28 drives the toggle gear ring 31 to rotate, and the rotation of the toggle gear ring 31 drives the supporting circular plate 30 to rotate, and the rotation of the supporting circular plate 30 drives the limiting spiral groove 32 to rotate, and the rotation of the limiting spiral groove 32 drives the supporting straight plate 35 to slide on the limiting support block 34 through the limiting arc block 37, and the movement of the supporting straight plate 35 drives the straight blade 36 to extend or retract into the installation box 25.

[0050] In order to show the detailed structure of the second power output end of the telescopic mechanism, the following features are also specifically set:

[0051] The telescopic mechanism further includes a limit bracket 39 (such as a limit bracket 39) disposed below each supporting straight plate 35 and fixedly connected to the two limit brackets 34. Fig.10As shown), a transmission gear 40 rotatably arranged on a limit bracket 39, a limit rack 38 arranged below the supporting straight plate 35, a transmission bevel gear 41 coaxially fixedly connected to the transmission gear 40, a bearing support plate 42 arranged below the limit bracket 39 and fixedly connected to the inner wall of the installation box 25, a sliding arc box 43 slidably arranged on the bearing support plate 42, and an arc rack 44 fixedly arranged on the sliding arc box 43, the transmission gear 40 is meshed with the limit rack 38, the transmission bevel gear 41 is meshed with the arc rack 44, and the arc blade 45 is fixedly arranged on the side wall of the sliding arc box 43.

[0052] The arc-shaped rack 44 is the second power output end of the telescopic mechanism.

[0053] When the device is running, the supporting straight plate 35 moves so that the limiting rack 38 drives the transmission gear 40 to rotate, and the rotation of the transmission gear 40 drives the transmission bevel gear 41 to rotate, and the rotation of the transmission bevel gear 41 drives the arc rack 44 to move, and the movement of the arc rack 44 causes the sliding arc box 43 to slide on the bearing support plate 42. At this point, when the supporting straight plate 35 is retracted into the installation box 25, the sliding arc box 43 is extended from the installation box 25 through the above-mentioned power transmission, so that the equipment can flexibly switch the weeding blades according to the weeding needs.

[0054] In order to achieve better cutting effect when cutting thicker vegetation roots, the following features are also set:

[0055] An air blower 55 is fixedly installed at the bottom of the installation box 25, a switching air duct 56 coaxially fixedly installed at the bottom of the installation box 25, an air supply ring 57 coaxially rotatably installed on the switching air duct 56, an expansion airbag 46 arranged in each sliding arc box 43, a plurality of fastening rings 47 fixedly installed on the expansion airbag 46 at equal intervals, a cutting blade 48 fixedly installed on each fastening ring 47 and an air supply pipe 58 arranged on each expansion airbag 46, one end of the air supply pipe 58 is connected to the expansion airbag 46, and the other end is connected to the air supply ring 57.

[0056] It should be noted that, under normal conditions, the expansion airbag 46 is contracted, the cutting blade 48 is also retracted in the sliding arc box 43, and the cutting blade 48 is flush with the edge of the arc blade 45. When it is necessary to deal with some weeds with thicker root and stem fibers, the air blower 55 operates to pump gas into the expansion airbag 46 through the adapter air duct 56, the air supply ring 57 and the air supply pipe 58, and waits for the expansion airbag 46 to expand and become larger, and the cutting blade 48 extends from the arc blade 45, and cooperates with the edge of the arc blade 45 to form a serrated cutting knife, so that it can better cut the difficult-to-handle weeds.

[0057] In order to ensure that the straight blade 36 and the curved blade 45 can keep the vegetation clean after cutting, the following features are also provided:

[0058] A plurality of toggle grooves 33 are provided in an annular shape and at equal intervals on the side wall of the supporting circular plate 30, and a plurality of receiving grooves 49 are provided in an annular shape and at equal intervals on the side wall of the mounting box 25. A support rod 50 is fixedly provided in each receiving groove 49, and a toggle block 51 provided on each support rod 50 is rotated by a torsion spring, and a sliding arc plate 52 is slidably provided on each receiving groove 49. The mounting rods 53 are symmetrically fixedly provided at both ends of the sliding arc plate 52, and four brush rods 54 are provided on the mounting rod 53, (such as Fig.11 ) The brush rods 54 are arranged in groups of two, one group of brush rods 54 is used to clean the straight-edge blade 36, and the other group is used to clean the arc-edge blade 45, and one end of the toggle block 51 close to the sliding arc plate 52 is hinged to the sliding arc plate 52.

[0059] When the device is running, the supporting circular plate 30 rotates so that the side wall of the toggle groove 33 intermittently touches the toggle block 51. At this time, the toggle block 51 is deflected under the action of the torsion spring, and the toggle block 51 also moves with the sliding arc plate 52, waiting for the supporting circular plate 30 to continue to rotate. When it rotates to the next toggle groove 33, the toggle block 51 swings under the action of the torsion spring, and the swing of the toggle block 51 drives the sliding arc plate 52 to swing. The swing of the sliding arc plate 52 drives the mounting rod 53 and the brush rod 54 to swing. The brush rod 54 swings to clean the weed debris remaining on the straight blade 36 and the arc blade 45 through the brush, thereby increasing the service life of the equipment.

[0060] The working principle of the device is as follows: when it is necessary to adjust the weeding height of the equipment, the rotating handle 12 is twisted to rotate the threaded rod 11, and the threaded rod 11 rotates and moves along the axis of the threaded tube 10 under the action of the thread, and the movement of the threaded rod 11 drives the movable tube 5 to move in the supporting bottom tube 4, ensuring that the equipment can reach a suitable weeding height; when it is necessary to adjust the weeding angle of the equipment, the locking rod 15 is pulled out of the positioning hole 16, and then the telescopic rod 20 is pushed to slide on the limiting arc bar 2 through the pushing handle 21 on the telescopic rod 20, so that the supporting cross plate 6 rotates a certain angle, and then the locking rod 15 is elastically reset and reinserted into the positioning hole 16 to ensure the subsequent stable operation of the equipment; when it is necessary to rotate the appropriate weeding blade according to the needs of the weeding work, the inner angle handle is used to twist the toggle shaft 27, and the rotation of the toggle shaft 27 drives the toggle bevel gear 28 to rotate, and the rotation of the toggle bevel gear 28 drives the toggle gear ring 31 to rotate, and the rotation of the toggle gear ring 31 drives the supporting circular plate 30 to rotate, and the rotation of the supporting circular plate 30 drives the limiting spiral The groove 32 rotates, and the limiting spiral groove 32 rotates through the limiting arc block 37 to drive the supporting straight plate 35 to slide on the limiting support block 34. The supporting straight plate 35 moves to drive the straight blade 36 to extend or retract the installation box 25, and the supporting straight plate 35 moves so that the limiting rack 38 drives the transmission gear 40 to rotate, and the transmission gear 40 rotates to drive the transmission bevel gear 41 to rotate, and the transmission bevel gear 41 rotates to drive the arc rack 44 to move, and the arc rack 44 moves to cause the sliding arc box 43 to slide on the bearing support plate 42. When the supporting straight plate 35 is retracted into the installation box 25, the sliding arc box 43 is extended from the installation box 25 through the above-mentioned power transmission, so that the equipment can flexibly switch the weeding blade according to the weeding needs. After selecting a suitable weeding blade, the driving motor 18 drives the active wheel 19 to rotate, and the active wheel 19 rotates through the connecting belt 8 to drive the driven wheel 7 to rotate. The driven wheel 7 rotates to drive the lifting shaft 24 to rotate. The lifting shaft 24 rotates to drive the installation box 25 to rotate. The installation box 25 rotates to drive the weeding blade to start weeding.

[0061] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A weeding device with an adjustable weeding depth mechanism, characterized in that: The invention comprises a mobile cart (1), a bearing base (3) fixedly arranged on the mobile cart (1), a supporting bottom tube (4) rotatably arranged on the bearing base (3), a movable tube (5) coaxially keyed with the supporting bottom tube (4), a supporting horizontal plate (6) fixedly arranged on the top of the movable tube (5), a lifting mechanism for driving the movable tube (5) to move up and down in the supporting bottom tube (4), an angle adjustment mechanism for adjusting the rotation angle of the supporting bottom tube (4) in the bearing base (3), a U-shaped frame (17) fixedly arranged at the bottom of the supporting horizontal plate (6), a driving motor (18) fixedly arranged on the U-shaped frame (17), and a driving motor (18) rotatably arranged on the supporting horizontal plate (6) away from the supporting horizontal plate (6). A mounting box (25) at one end of the movable tube (5), a plurality of straight blades (36) movably arranged in an annular shape and at equal intervals on the side wall of the mounting box (25), an arc-edged blade (45) arranged below the straight blade (36) and slidably connected to the side wall of the mounting box (25), and a telescopic mechanism arranged in the mounting box (25), the telescopic mechanism having a first power output end and a second power output end, the first power output end being used to drive all the straight blades (36) to move radially along the mounting box (25), the second power output end being used to drive all the arc-edged blades (45) to move radially along the mounting box (25), and the driving motor (18) being transmission-connected to the mounting box (25); The lifting mechanism comprises a threaded tube (10) coaxially fixedly arranged in the supporting bottom tube (4), a threaded rod (11) coaxially rotatably arranged in the movable tube (5), and a rotating handle (12) coaxially fixedly arranged at the top of the threaded rod (11), and the threaded rod (11) and the threaded tube (10) are coaxially threadedly connected; The angle adjustment mechanism comprises a limiting arc strip (2) fixedly arranged on the mobile cart (1), a positioning ring (13) coaxially fixedly arranged on the supporting bottom tube (4), a positioning support plate (14) fixedly arranged on the positioning ring (13), a locking pull rod (15) elastically slidably arranged on the positioning support plate (14), a plurality of positioning holes (16) arranged in an annular shape on the supporting base (3), a telescopic rod (20) arranged at the bottom of the U-shaped frame (17) and a pushing handle (21) fixedly arranged on the telescopic rod (20), the top of the telescopic rod (20) is fixedly connected to the U-shaped frame (17), and the bottom of the telescopic rod (20) is slidably matched with the limiting arc strip (2); A driving wheel (19) is coaxially fixedly arranged on the output shaft of the driving motor (18), a lifting shaft (24) and a lifting ring (23) are coaxially fixedly arranged on the mounting box (25), a limiting ring (22) is fixedly arranged at the bottom of the end of the supporting transverse plate (6) away from the movable tube (5), the lifting shaft (24) is rotatably connected to the supporting transverse plate (6), a driven wheel (7) is coaxially rotatably arranged on the lifting shaft (24), the lifting ring (23) is coaxially rotatably connected to the limiting ring (22), and a connecting belt (8) is arranged between the driving wheel (19) and the driven wheel (7); The telescopic mechanism comprises a supporting circular plate (30) coaxially rotatably arranged in the installation box (25), a toggle gear ring (31) coaxially fixedly arranged on the top of the supporting circular plate (30), a plurality of bearing supports (26) annularly fixedly arranged on the top of the installation box (25), a toggle shaft (27) rotatably arranged on each bearing support (26), a toggle bevel gear (28) coaxially fixedly arranged on each toggle shaft (27), an inner angle wrench groove (29) provided at one end of each toggle shaft (27) away from the toggle bevel gear (28), and a limit screw (29) provided at the bottom of the supporting circular plate (30). The invention relates to a plurality of support straight plates (35) slidably arranged on the side wall of the installation box (25), a limit support block (34) symmetrically arranged on both sides of each support straight plate (35) and fixedly connected to the side wall of the installation box (25), and a limit arc block (37) fixedly arranged on each support straight plate (35), wherein the number of the limit arc blocks (37) is at least two, the limit arc blocks (37) are slidably matched with the limit spiral groove (32), a straight blade (36) is fixedly arranged on both sides of the support straight plate (35), and a toggle bevel tooth (28) is meshed with a toggle gear ring (31).

2. A weeding device with an adjustable weeding depth mechanism according to claim 1, characterized in that: The supporting circular plate (30) is the first power output end of the telescopic mechanism.

3. A weeding device with an adjustable weeding depth mechanism according to claim 2, characterized in that: The telescopic mechanism further comprises a limit bracket (39) arranged below each supporting straight plate (35) and fixedly connected to the two limit support blocks (34), a transmission gear (40) rotatably arranged on the limit bracket (39), a limit rack (38) arranged below the supporting straight plate (35), a transmission bevel gear (41) coaxially fixedly connected to the transmission gear (40), a bearing support plate (42) arranged below the limit bracket (39) and fixedly connected to the inner wall of the installation box (25), a sliding arc box (43) slidably arranged on the bearing support plate (42), and an arc-shaped rack (44) fixedly arranged on the sliding arc box (43), the transmission gear (40) meshes with the limit rack (38), the transmission bevel gear (41) meshes with the arc-shaped rack (44), and an arc blade (45) is fixedly arranged on the side wall of the sliding arc box (43).

4. A weeding device with an adjustable weeding depth mechanism according to claim 3, characterized in that: The arc-shaped rack (44) is the second power output end of the telescopic mechanism.

5. A weeding device with an adjustable weeding depth mechanism according to claim 4, characterized in that: The bottom of the installation box (25) is fixedly provided with an air blower (55), a transfer air duct (56) coaxially fixedly provided at the bottom of the installation box (25), an air supply ring (57) coaxially rotatably provided on the transfer air duct (56), an expansion air bag (46) provided in each sliding arc box (43), a plurality of fastening rings (47) fixedly provided at equal intervals on the expansion air bag (46), a cutting blade (48) fixedly provided on each fastening ring (47), and an air supply pipe (58) provided on each expansion air bag (46), wherein one end of the air supply pipe (58) is connected to the expansion air bag (46), and the other end is connected to the air supply ring (57).

6. A weeding device with an adjustable weeding depth mechanism according to claim 5, characterized in that: A plurality of toggle grooves (33) are provided at equal intervals in an annular shape on the side wall of the supporting circular plate (30); a plurality of accommodating grooves (49) are provided at equal intervals in an annular shape on the side wall of the mounting box (25); a support rod (50) is fixedly arranged in each accommodating groove (49); a toggle block (51) arranged on each support rod (50) is rotated by a torsion spring; a sliding arc plate (52) is slidably arranged on each accommodating groove (49); mounting rods (53) are fixedly arranged at both ends of the sliding arc plate (52) in a symmetrical state; four brush rods (54) are provided on the mounting rods (53); the brush rods (54) are arranged in groups of two; one group of brush rods (54) is used for cleaning the straight blade (36); and the other group of brush rods (54) is used for cleaning the arc blade (45); and one end of the toggle block (51) close to the sliding arc plate (52) is hinged to the sliding arc plate (52).

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