Rotary cultivator

Abstract

The utility model discloses a rotary cultivator which comprises a frame body, a power mechanism and a handrail are arranged at the top of the frame body, the handrail extends towards the rear portion of the frame body, an anti-skid wheel is arranged at the bottom of the frame body in a rotating mode, and the anti-skid wheel comprises a connecting shaft arranged on the frame body in a rotating mode and two wheel rims arranged in the axial direction of the connecting shaft in a spaced mode. The connecting shafts are connected with the wheel rims through a plurality of connecting rods, the outer sides of the two wheel rims are connected through a plurality of V-shaped floor grabbing plates, and a rotary tillage mechanism is further installed on the rear portion of the frame body and connected with a power mechanism through a transmission mechanism. According to the rotary cultivator, the V-shaped ground grabbing plates are arranged on the anti-skid wheels, and when the anti-skid wheels rotate, the ground grabbing plates make contact with the ground firstly and are inserted into the ground, so that the ground grabbing force and the adhesive force of the ground grabbing plates are improved, and slipping between the anti-skid wheels and the ground is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a rotary tiller. Background Art

[0002] Rotary tillers are tilling machines used to complete ploughing and harrowing operations. They are widely used because of their strong soil crushing ability and flat surface after ploughing. They can also cut up the root stubble buried below the surface, making it easier for the seeder to operate and providing a good seed bed for later sowing.

[0003] The existing rotary tillers are large in size, so they cannot be used when cultivating small areas of land, while traditional hand-held rotary tillers are small in size and are widely used. The walking devices of hand-held rotary tillers on the market mainly include tire walking type and direct rotary tillage mechanism walking type. When the tires of traditional rotary tillers encounter potholes in the field, they have insufficient climbing ability and are prone to slipping. When the walking and rotary tilling of the entire rotary tiller are performed by the rotary tillage mechanism, the device is prone to slipping in the area after rotary tillage, which makes the propulsion efficiency of the rotary tiller low and reduces its tillage effect. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a rotary tiller to solve the problem that the existing rotary tillers are prone to slipping when encountering potholes in the field during rotary tillage operations.

[0005] The utility model is achieved in this way:

[0006] A rotary tiller comprises a frame, a power mechanism and an armrest are arranged on the top of the frame, the armrest extends toward the rear of the frame, an anti-skid wheel is rotatably arranged on the bottom of the frame, the anti-skid wheel comprises a connecting shaft rotatably arranged on the frame, two wheel rims are arranged at intervals along the axial direction of the connecting shaft, the connecting shaft and the wheel rims are connected by a plurality of connecting rods, the outer sides of the two wheel rims are connected by a plurality of V-shaped gripping plates, a rotary tillage mechanism is also installed at the rear of the frame, and the rotary tillage mechanism is connected to the power mechanism through a transmission mechanism.

[0007] Furthermore, the rotary tilling mechanism includes a rotary tilling shaft, the outer circumference of which is an equilateral hexagonal prism structure, and both ends of the rotary tilling shaft are fixedly connected with cylindrical end shafts, which are respectively connected to corresponding output ends in the transmission mechanism, and a plurality of rotary tilling blades are evenly distributed along the axial direction of the rotary tilling shaft.

[0008] Furthermore, each set of rotary tillage blades includes six blades, which are respectively located on the hexagonal prism surface of the rotary tillage shaft and are detachably connected thereto, and the blades are evenly arranged along the axial direction of the rotary tillage shaft.

[0009] Furthermore, the blade is an L-shaped structure, and the blade includes a flat blade segment and a curved blade segment. A plurality of connecting plates are arranged on the rotary tillage shaft, and the flat blade segment and the connecting plates are connected by bolts and nuts.

[0010] Furthermore, the width of the curved blade segment gradually increases outward from the flat blade segment, and one end of the curved blade segment away from the flat blade segment is bent.

[0011] Furthermore, it also includes a protective cover arranged above the rotary tillage mechanism, the protective cover is a U-shaped structure with an opening facing downward, and the top of the protective cover is fixedly connected to the handrail through a plurality of pull rods.

[0012] Furthermore, a furrowing plow is provided at one end of the protective cover away from the rotary tillage mechanism, and a vertical pole is fixedly connected to the upper part of the furrowing plow, and the vertical pole is connected to the protective cover in a lifting manner.

[0013] Furthermore, a support is fixedly provided on the top of the protective cover, a cross bar is fixedly connected to the support, a screw rod is passed through the cross bar, and the cross bar and the vertical rod are connected by the screw rod.

[0014] The beneficial effects of the utility model are:

[0015] The rotary tiller of the utility model has a plurality of V-shaped gripping plates on the anti-skid wheels. When the anti-skid wheels rotate, the gripping plates first contact the ground and are inserted into the ground to improve their grip and adhesion, effectively avoiding the anti-skid wheels from slipping on the ground. The six blades in each group of rotary tillage cutter discs that are evenly distributed along the circumference of the rotary tillage shaft are not in the same plane, and are evenly distributed along the axial direction of the rotary tillage shaft. This three-dimensional structural arrangement allows one blade to dig up the soil in the field and then drop it onto the adjacent blade and then be pushed out. The soil is continuously transferred between the adjacent blades by relay, thereby improving the rotary tillage efficiency and rotary tillage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the anti-skid wheel of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the rotary tillage mechanism of the utility model;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the rotary tillage cutter disc of the utility model.

[0021] Description of reference numerals:

[0022] 1. Frame; 2. Power mechanism; 3. Handrail;

[0023] 4. Anti-skid wheel; 41. Connecting shaft; 411. Connecting sleeve; 42. Wheel rim; 43. Connecting rod; 44. Gripping floor;

[0024] 5. Rotary tillage mechanism; 51. Rotary tillage shaft; 511. End shaft; 52. Rotary tillage blade; 521. Blade; 522. Connecting plate; 523. Bolt; 524. Nut;

[0025] 6. Transmission mechanism; 7. Protective cover; 71. Support; 72. Cross bar; 73. Screw rod; 8. Pull rod; 9. Furrowing plow; 91. Vertical pole. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] like Figure 1 and Figure 2 The figure shows a rotary tiller of the utility model, which includes a frame 1. A power mechanism 2 and an armrest 3 are provided on the top of the frame 1. The armrest 3 extends toward the rear of the frame 1. An anti-skid wheel 4 is rotatably provided on the bottom of the frame 1. The anti-skid wheel 4 includes a connecting shaft 41 rotatably provided on the frame 1. Two wheel rims 42 are provided at intervals along the axial direction of the connecting shaft 41. The connecting shaft 41 and the wheel rim 42 are connected by a plurality of connecting rods 43. The outer sides of the two wheel rims 42 are connected by a plurality of V-shaped gripping plates 44. A rotary tillage mechanism 5 is also installed at the rear of the frame 1. The rotary tillage mechanism 5 is connected to the power mechanism 2 through a transmission mechanism 6.

[0028] like Figure 1 and Figure 3As shown, the number of anti-skid wheels 4 is two, and the two anti-skid wheels 4 are symmetrically arranged on both sides of the frame 1. The anti-skid wheel 4 includes a connecting shaft 41, the outer periphery of the connecting shaft 41 is an equilateral hexagonal prism structure, and one end of the connecting shaft 41 is fixedly connected with a cylindrical connecting sleeve 411, and the connecting sleeve 411 is used to be fixedly connected with the output shaft of the gearbox (not shown in the figure) in the power mechanism 2. In this embodiment, the power mechanism 2 is a diesel engine, and the power mechanism 2 and the gearbox are both arranged in the structure of a walking tractor, which is an existing mature technology, and its specific structure and working principle are not repeated. Two wheel rims 42 are arranged at intervals along the axial direction of the connecting shaft 41, and the connecting shaft 41 and the wheel rim 42 are connected by a plurality of connecting rods 43. The outer sides of the two wheel rims 42 are connected by a plurality of V-shaped gripping plates 44, and the opening direction of the V-shaped gripping plates 44 is consistent with the rotation direction of the anti-skid wheel 4 when it moves forward. When the anti-skid wheel 4 rotates, the gripping plate 44 first contacts the ground, and is inserted into the ground to improve its grip and adhesion, thereby avoiding slipping between the wheel and the ground. The two wheel rims 42 and the gap therebetween form a groove design, which, on the one hand, facilitates the passage of soil or mud, and on the other hand, further improves the grip of the anti-skid wheel 4 to avoid slipping.

[0029] A rotary tillage mechanism 5 is also installed at the rear of the frame 1, and the rotary tillage mechanism 5 is connected to the power mechanism 2 through a transmission mechanism 6. In this embodiment, the transmission mechanism 6 adopts a belt drive, and its function is to transmit the force of the power mechanism 2 to the rotary tillage mechanism 5 and drive the rotary tillage mechanism 5 to rotate. This is a prior art, and the transmission structure in a walking tractor can be adopted, which will not be described in detail here. Figure 4 As shown, the rotary tillage mechanism 5 includes a rotary tillage shaft 51, the outer periphery of which is an equilateral hexagonal prism structure, and cylindrical end shafts 511 are fixedly connected to both ends of the rotary tillage shaft 51, and the two end shafts 511 are respectively connected to the corresponding output ends of the transmission mechanism 6, and multiple groups of rotary tillage blades 52 are evenly distributed along the axial direction of the rotary tillage shaft 51. Figure 5As shown, each set of rotary tillage blade discs 52 includes six blades 521, and the six blades 521 are respectively located on the hexagonal prism surface of the rotary tillage shaft 51 and are detachably connected thereto, and the six blades 521 are not on the same plane, and the six blades 521 are evenly arranged along the axial direction of the rotary tillage shaft 51. The blades 521 are detachably connected to the rotary tillage shaft 51, and when the blades 521 are used for a long time and are severely worn, new blades 521 can be conveniently replaced to improve the service life of the rotary tillage mechanism 5. The blades 521 are L-shaped structures, and the blades 521 include a flat blade segment and a curved blade segment. Preferably, the angle between the flat blade segment and the curved blade segment is slightly less than 90 degrees. A plurality of connecting plates 522 are arranged on the rotary tillage shaft 51, and the connecting plates 522 can be selected from channel steels. The flat blade segments are connected to the connecting plates 522 by bolts 523 and nuts 524, and the flat blade segments are embedded in the connecting plates 522 of the channel steel structure, thereby improving the stability of the connection between the flat blade segments and the connecting plates 522. The width of the curved blade segment gradually increases from the flat blade segment outward, and the end of the curved blade segment away from the flat blade segment is bent so that the bent segment is easier to insert into the soil. In this embodiment, the six blades 521 evenly arranged along the circumference of the rotary tillage shaft 51 are not in the same plane, and are evenly arranged along the axial direction of the rotary tillage shaft 51. This three-dimensional structural arrangement allows one blade 521 to dig up the soil in the field and then drop it onto the adjacent blade 521 and then be pushed out. The soil is continuously transferred between the adjacent blades 521 by relay, thereby improving the rotary tillage efficiency and rotary tillage effect.

[0030] like Figure 2 As shown, the protective cover 7 is also provided above the rotary tillage mechanism 5, and the protective cover 7 is used to prevent the soil operated by the rotary tillage mechanism 5 from splashing around, and the soil that has been rotary tilled is lifted up to the protective cover 7 and then falls to the ground again, thereby reducing the harm to the driver and improving the safety of the operation. The protective cover 7 is a U-shaped structure with an opening facing downward, and the top of the protective cover 7 is fixedly connected to the handrail 3 by a plurality of tie rods 8.

[0031] A furrowing plow 9 is provided at one end of the protective cover 7 away from the rotary tillage mechanism 5, and a vertical pole 91 is fixedly connected to the upper part of the furrowing plow 9, and the vertical pole 91 is connected to the protective cover 7 in a lifting manner. Specifically, a support 71 is fixedly provided on the top of the protective cover 7, and the support 71 is located at the end of the protective cover 7 away from the rotary tillage mechanism 5. A cross bar 72 is fixedly connected to the support 71, and a screw 73 is passed through the cross bar 72, and the cross bar 72 and the vertical pole 91 are connected by the screw 73. A pin hole (not shown in the figure) is provided at one end of the screw 73, and a split pin (not shown in the figure) is passed through the pin hole. A plurality of through holes are provided on the vertical pole 91, and the plurality of through holes are evenly arranged along the length direction of the vertical pole 91. When the height of the furrowing plow 9 needs to be adjusted, a through hole on the vertical pole 91 is aligned with the screw 73, so that the screw 73 is passed through the through hole of the vertical pole 91, and the split pin is passed through the pin hole, so that the connection between the furrowing plow 9 and the cross bar 72 is stable to prevent it from falling off. It should be noted that the rotary tillage machine of the utility model is provided with a rotary tillage mechanism 5 and a furrowing plow 9, which can complete the rotary tillage operation and furrowing operation at one time. However, if only rotary tillage is required during farming, the furrowing plow 9 can be removed from the protective cover 7, which is easy and convenient to operate and has strong applicability.

[0032] like Figure 1 and Figure 2 As shown, a handrail 3 is also provided on the top of the frame 1, and the handrail 3 extends toward the rear of the frame 1. The handrail 3 is provided with a throttle control handle (not marked in the figure) and a clutch control handle (not marked in the figure). The working speed is controlled by the clutch control handle and the throttle control handle. This is the prior art, and its specific structure and working principle are not repeated here.

[0033] When the rotary tiller of the utility model is in use, the diesel engine in the power mechanism 2 is started, the working speed of the rotary tiller is controlled by the control handles on the armrest 3, the rotary tillage mechanism 5 is driven to rotate by the transmission mechanism 6, the anti-skid wheel 4 drives the rotary tillage mechanism 5 to perform rotary tillage during the movement, and the furrowing plow 9 located behind the rotary tillage mechanism 5 performs furrowing operations on the field after rotary tillage, thereby completing the operations of rotary tillage and furrowing at one time.

[0034] Although the present invention discloses a preferred specific embodiment to achieve the above-mentioned purpose, it is not intended to limit the structural features of the present invention. Any person skilled in the art should know that under the technical spirit of the present invention, any easily conceivable changes or modifications are possible and are all covered by the scope of the patent application of the present invention.

Claims

1. A rotary tiller, characterized in that: The invention comprises a frame (1), wherein a power mechanism (2) and an armrest (3) are provided on the top of the frame (1), wherein the armrest (3) extends toward the rear of the frame (1), and an anti-skid wheel (4) is rotatably provided on the bottom of the frame (1), wherein the anti-skid wheel (4) comprises a connecting shaft (41) rotatably provided on the frame (1), wherein two wheel rims (42) are provided at intervals along the axial direction of the connecting shaft (41), wherein the connecting shaft (41) and the wheel rims (42) are connected via a plurality of connecting rods (43), and the outer sides of the two wheel rims (42) are connected via a plurality of V-shaped gripping plates (44), and a rotary tillage mechanism (5) is also installed at the rear of the frame (1), wherein the rotary tillage mechanism (5) is connected to the power mechanism (2) via a transmission mechanism (6).

2. The rotary tiller according to claim 1, characterized in that: The rotary tillage mechanism (5) comprises a rotary tillage shaft (51), the outer periphery of the rotary tillage shaft (51) being in the form of an equilateral hexagonal prism structure, and cylindrical end shafts (511) being fixedly connected at both ends of the rotary tillage shaft (51), the end shafts (511) being respectively connected to corresponding output ends of the transmission mechanism (6), and a plurality of sets of rotary tillage blades (52) being evenly distributed along the axial direction of the rotary tillage shaft (51).

3. The rotary tiller according to claim 2, characterized in that: Each group of the rotary tilling blade discs (52) comprises six blades (521), the six blades (521) are respectively located on the hexagonal prism surface of the rotary tilling shaft (51) and are detachably connected thereto, and the blades (521) are evenly arranged along the axial direction of the rotary tilling shaft (51).

4. The rotary tiller according to claim 3, characterized in that: The blade (521) is an L-shaped structure, comprising a flat blade segment and a curved blade segment, a plurality of connecting plates (522) are arranged on the rotary tiller shaft (51), and the flat blade segments and the connecting plates (522) are connected via bolts (523) and nuts (524).

5. The rotary tiller according to claim 4, characterized in that: The width of the curved blade segment gradually increases outward from the planar blade segment, and one end of the curved blade segment away from the planar blade segment is bent.

6. The rotary tiller according to claim 1, characterized in that: It also comprises a protective cover (7) arranged above the rotary tillage mechanism (5); the protective cover (7) is a U-shaped structure with its opening facing downward; the top of the protective cover (7) is fixedly connected to the handrail (3) via a plurality of pull rods (8).

7. The rotary tiller according to claim 6, characterized in that: A furrowing plow (9) is provided at one end of the protective cover (7) away from the rotary tillage mechanism (5); a vertical pole (91) is fixedly connected to the upper portion of the furrowing plow (9); and the vertical pole (91) is connected to the protective cover (7) in a lifting manner.

8. The rotary tiller according to claim 7, characterized in that: A support (71) is fixedly provided on the top of the protective cover (7), a cross bar (72) is fixedly connected to the support (71), a screw rod (73) is passed through the cross bar (72), and the cross bar (72) and the vertical rod (91) are connected via the screw rod (73).

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