A kind of agricultural rotary tiller

Abstract

The present invention discloses an agricultural rotary tiller, comprising: a traction locomotive, a rotary tilling mechanism, and a traction mechanism for connecting the traction locomotive and the rotary tilling mechanism. The traction locomotive includes: a locomotive body with crawlers and a traction motor installed on the traction locomotive for driving the crawler drive wheels to run; the rotary tilling mechanism includes: a base, a cutter shaft installed on the base, and a rotary tilling motor for driving the cutter shaft to rotate. Rotary blades are distributed along the axial direction of the cutter shaft; the traction mechanism uses a loose-joint connecting rod mechanism to movably connect the rotary tilling mechanism to the traction locomotive; a support mechanism for supporting the rotary tilling mechanism is further provided on the rotary tilling mechanism. In the present invention, through reasonable settings, the balanced distribution of traction force is improved, and the problem of uneven force caused by the self-weight of the rotary tilling mechanism or uneven ground is overcome. At the same time, the rotary tilling mechanism remains balanced and stable during operation, so that the tilling depth of the rotary tilling mechanism remains consistent.

Description

Technical Field:

[0001] The present invention relates to the technical field of agricultural machinery, and particularly refers to an agricultural rotary tiller. Background Art:

[0002] Current agricultural rotary tillers mainly consist of two parts: a locomotive and a rotary tilling mechanism. The locomotive generally uses a tractor driven by a diesel internal combustion engine. The rotary tilling mechanism is installed on the locomotive or towed by the locomotive to achieve operation in farmland. The following are the deficiencies of this traditional agricultural tiller:

[0003] (1) Since the traditional agricultural rotary tiller is large in size, it is not applicable to mountainous and hilly planting areas, as well as areas that are relatively small and enclosed. Moreover, the rotary tilling mechanism itself does not have a driving function, so it usually needs to be transported by other motor vehicles during transportation and cannot directly follow the towing locomotive on the road.

[0004] (2) In traditional agricultural rotary tilling, the locomotive and the rotary tilling mechanism are connected by a traction device. However, the existing traction device has a complex structure and is difficult to automatically adjust, resulting in an uneven treatment of the cultivated land when the rotary tilling mechanism runs with the locomotive. For example, due to uneven stress, the depth of plowing of the cultivated land is unequal.

[0005] In view of the above problems, the inventor of the present invention proposes the following technical solutions. Summary of the Invention:

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an agricultural rotary tiller.

[0007] To solve the above technical problem, the present invention adopts the following technical solution: An agricultural rotary tiller includes: a towing locomotive, a rotary tilling mechanism, and a traction mechanism for connecting the towing locomotive and the rotary tilling mechanism. The towing locomotive includes: a locomotive body using crawlers and a traction motor installed on the towing locomotive for driving the crawler drive wheels to run; the rotary tilling mechanism includes: a base, a cutter shaft installed on the base, and a rotary tilling motor for driving the cutter shaft to rotate. Rotary blades are distributed along the axial direction of the cutter shaft; the traction mechanism uses a swivel joint link mechanism to movably connect the rotary tilling mechanism to the towing locomotive; a support mechanism for supporting the rotary tilling mechanism is further provided on the rotary tilling mechanism.

[0008] Furthermore, in the above technical solution, the support mechanism is provided at one end of the base of the rotary tilling mechanism close to the towing locomotive.

[0009] Furthermore, in the above technical solution, the support mechanism includes: a support arm and a support plate located at the lower end of the support arm. The support plate tilts upward in the direction towards the towing locomotive.

[0010] Furthermore, in the above technical solution, the support arm and the base are movably connected with adjustable height.

[0011] Furthermore, in the above technical solution, the support mechanism is arranged at one end of the upper base of the rotary tillage mechanism away from the tractor. The support mechanism is a movable plate pivotally connected to the base. When the agricultural rotary tillage machine is in working state, the movable plate fits on the ground.

[0012] Furthermore, in the above technical solution, a turning drive member is arranged between the tractor and the traction mechanism. The traction mechanism is driven to rotate by the turning drive member, so as to drive the rotary tillage mechanism and the support mechanism arranged on the rotary tillage mechanism to leave the ground.

[0013] Furthermore, in the above technical solution, the turning drive member is any one of a hydraulic piston member, a lead screw, a pneumatic piston member, an electric-driven chain transmission mechanism, and a wire winding mechanism.

[0014] Furthermore, in the above technical solution, the traction mechanism includes: a turning frame pivotally connected to the tractor, a fixed frame fixed on the base of the tilling device, and a loose-joint link mechanism connected between the turning frame and the fixed frame. The turning drive member is installed on the tractor and pivotally connected to the turning frame, and the turning drive member is located below the pivotal connection part between the tractor and the turning frame.

[0015] Furthermore, in the above technical solution, a traction chain is also arranged between the turning frame and the fixed frame.

[0016] Furthermore, in the above technical solution, the traction mechanism includes: a support frame fixed on the tractor, and a loose-joint link mechanism connected between the tractor and the base. The turning drive member is pivotally connected to the support frame and pivotally connected to the base, and the turning drive member is located above the loose-joint link mechanism.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] 1. In the present invention, through reasonable setting, the balanced distribution of traction force is improved, and the problem of uneven force caused by the self-gravity of the rotary tillage mechanism or the uneven ground is overcome.

[0019] 2. In the present invention, a support mechanism is also provided. The support mechanism can cooperate with the traction mechanism to keep the rotary tillage mechanism balanced and stable during operation, so that the tilling depth of the rotary tillage mechanism remains consistent, and the situation that the rotary tillage mechanism sinks deeply into the land will not occur.

[0020] 3. The present invention also has a flipping function. The rotary tillage mechanism is driven by a flipping driving member to rotate, so that it is separated from the ground and suspended. In this way, the towing locomotive can directly carry the rotary tillage mechanism and drive, and the rotary tillage mechanism does not need to be transported by other motor vehicles anymore.

[0021] 4. The present invention no longer uses a large-horsepower diesel engine as the power source, but instead uses a crawler electric towing locomotive. The battery powers the traction motor to drive the towing locomotive. At the same time, the cutter shaft in the rotary tillage mechanism is also driven by a rotary tillage motor. Since an internal combustion engine is usually used as the power source in the prior art, the power required for farming is linked to the power source through a complex transmission mechanism, resulting in a large intermediate energy consumption loss and low efficiency. In the present invention, the traction motor and the rotary tillage motor are independent of each other and each serves as an independent power source. In this way, an appropriate motor can be selected according to needs, thereby reducing the energy consumption loss in the intermediate transmission process and improving the battery usage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS:

[0022] Figure 1 is the front view of the working state of Embodiment 1 of the present invention;

[0023] Figure 2 is the front view of the flipping state of the rotary tillage mechanism in Embodiment 1 of the present invention;

[0024] Figure 3 is the top view of the present invention after removing the towing locomotive in Embodiment 1;

[0025] Figure 4 is the right view of the flipping frame in Embodiment 1 of the present invention;

[0026] Figure 5 is the right view of the fixed bracket and the rotary tillage mechanism in Embodiment 1 of the present invention;

[0027] Figure 6 is the front view of the working state of Embodiment 2 of the present invention;

[0028] Figure 7 is the front view of the working state of Embodiment 3 of the present invention. DETAILED DESCRIPTION OF THE INVENTION:

[0029] The present invention will be further described below in conjunction with specific embodiments and the drawings.

[0030] The present invention is an agricultural rotary tiller, as shown in Figures 1 to 5 shown. This is Embodiment 1 of the present invention, which includes: a towing locomotive 1, a rotary tillage mechanism 2, a traction mechanism 30 for connecting the towing locomotive 1 and the rotary tillage mechanism 2, a flipping driving member 6, and a support mechanism 8.

[0031] The described towing locomotive 1 includes: a locomotive body 10 with crawlers and a traction motor 11 installed on the towing locomotive 1 for driving the crawler drive wheels to run. In the first embodiment, the locomotive body 10 is an electric crawler-driven locomotive. For the convenience of controlling the direction, there are two traction motors 11, which are respectively used to drive the crawler drive wheels on the left and right sides. In this way, the forward and backward movement and turning of the entire towing body 10 can be controlled by controlling the outputs of the two traction motors 11 on the left and right. The traction motor 11 can adopt a DC brushless motor, and its output shaft drives the drive wheels in the crawlers to run through gears, chains, or belts. The towing locomotive 1 is powered by a lithium battery. Generally, the lithium battery is relatively heavy, and it can be located on the other side of the rotary tillage mechanism 2, which can play a counterweight effect to balance the entire machine.

[0032] The described rotary tillage mechanism 2 includes: a base 21, a cutter shaft 22 installed on the base 21, and a rotary tillage motor 23 for driving the cutter shaft 22 to rotate. Rotary cutters 20 are distributed along the axial direction of the cutter shaft 22. The output shaft of the rotary tillage motor 23 and the cutter shaft 22 are linked through a transmission mechanism. During operation, the rotary cutters 20 will rotate rapidly with the cutter shaft 22 to achieve the function of tilling the land. Since it is inevitable to encounter hard objects such as stones during tilling, when the rotary cutters 20 encounter stones during rotation, the rotary cutters 20 may be jammed and unable to rotate. At this time, the rotary tillage motor 23 may be burned out due to excessive load. Therefore, in the first embodiment, at least one set of non-rigid transmission components is provided in the transmission mechanism between the output shaft of the rotary tillage motor 23 and the cutter shaft 22. This can avoid the situation that the rotary tillage motor 23 is burned out due to excessive load in extreme cases. Specifically, the non-rigid transmission component is a belt transmission component 24 provided on the output shaft of the rotary tillage motor 23. When the rotary cutters 20 are jammed and unable to rotate, the slippage of the belt transmission component 24 can be used to avoid the situation of the rotary tillage motor 23 being burned out.

[0033] The described rotary tillage mechanism 2 is movably connected to the towing locomotive 1 through a traction mechanism 30. The described traction mechanism 30 includes: a turnover frame 3 pivotally connected to the towing locomotive 1, a fixed frame 4 fixed to the rotary tillage mechanism 2, and a loose-joint link mechanism 5 connected between the turnover frame 3 and the fixed frame 4. In addition, a turnover driving member 6 is installed on the towing locomotive 1 and pivotally connected to the turnover frame 3. As Figure 1 shown, during operation, the rotary tillage mechanism 2 is movably connected to the towing locomotive 1 through the traction mechanism 30. When the towing locomotive 1 travels, it will drive the rotary tillage mechanism 2 to travel through the traction mechanism 30, thereby realizing the tillage operation. See Figure 2As shown, after the ploughing is completed, the traction mechanism 30 drives the tipping frame 3 to rotate through the tipping drive member 6. After pulling the fixed frame 4 and the rotary tillage mechanism 2 to rotate, the rotary tillage mechanism 2 and the support mechanism 8 are disengaged from the bottom surface to achieve suspension. At this time, the tractor 1 can directly carry the rotary tillage mechanism 2 and drive, and the rotary tillage mechanism 2 does not need to be transported by other motor vehicles anymore. When in use, the user can directly run the entire agricultural machinery to the designated position through the tractor 1, and then lower the rotary tillage mechanism through the present invention to perform agricultural operations.

[0034] The following is a preferred embodiment of the traction mechanism 30 in this embodiment. In this embodiment, the tipping frame 3 includes: a tipping frame main rod 31, tipping frame longitudinal rods 32, tipping frame suspension rods 33, and a tipping sub-frame 34. Among them, the tipping frame main rod 31 is arranged horizontally, and the two tipping frame longitudinal rods 32 are arranged longitudinally above the tipping frame main beam 31. The tipping frame suspension rods 33 are located at the upper end of each tipping frame longitudinal rod 32 and extend towards the rotary tillage mechanism 2. The tipping sub-frame 34 is located below the tipping frame main rod 31. The fixed frame 4 includes: a fixed support rod 41 and a fixed cross bar 42 supported by the fixed support rod 41. The fixed frame 4 can be independently arranged and then fixed to the base 21 of the rotary tillage mechanism 2 by welding, or can be directly integrally formed on the base 21.

[0035] The articulated link mechanism 5 includes: a linkage rod 53 and articulated structures 50 located at both ends of the linkage rod 53. The articulated link mechanism 5 is movably connected between the tipping frame 3 and the fixed frame 4, and the articulated link mechanism 5 includes: an upper articulated link mechanism 51 located above and a lower articulated link mechanism 52 located below.

[0036] To ensure balance during the towing and traction process, the upper slipknot link mechanism 51 and the lower slipknot link mechanism 52 can be distributed in the following manner: two symmetrically distributed upper slipknot link mechanisms 51 and two symmetrically distributed lower slipknot link mechanisms 52. And the two symmetrically distributed upper slipknot link mechanisms 51 are in a "V" shape, and the two symmetrically distributed lower slipknot link mechanisms 52 are in a "V" shape, and the distribution patterns of the upper slipknot link mechanism 51 and the lower slipknot link mechanism 52 are opposite. That is, on the tipping frame 3: the slipknot structure 50 for connecting one end of the two upper slipknot link mechanisms 51 is located at the outer positions on both sides of the main rod 31 of the tipping frame; the slipknot structure 50 for connecting one end of the two lower slipknot link mechanisms 52 is located on the sub-frame 34 of the tipping frame, and the distance between the two slipknot structures 50 on the sub-frame 34 of the tipping frame is less than the distance between the two slipknot structures 50 on the main rod 31 of the tipping frame. On the fixed bracket 4, the slipknot structure 50 for connecting the other end of the two upper slipknot link mechanisms 51 is located in the middle area of the fixed crossbar 42; the slipknot structure 50 for connecting the other end of the two lower slipknot link mechanisms 52 can be directly fixed on the base 21 of the rotary tillage mechanism, and the distance between the two slipknot structures 50 on the fixed crossbar 42 is less than the distance between the two slipknot structures 50 on the base 21. Of course, the above distribution methods of the upper slipknot link mechanism 51 and the lower slipknot link mechanism 52 can also be distributed in the opposite way.

[0037] The above-mentioned slipknot structure 50 can adopt slipknot connection methods such as ball joint connection, or shaft hole connection, or universal joint, so as to enable the rotary tillage mechanism 2 to automatically adjust the direction during operation, achieve balance on both sides, and at the same time, with the restraint of the upper slipknot link mechanism 51 and the lower slipknot link mechanism 52, it can play a certain restrictive role on the entire rotary tillage mechanism 2, so that the deflection amplitude of the rotary tillage mechanism 2 is not too large. In addition, the linkage rod 53 can adopt a telescopic structure to achieve length adjustment.

[0038] In addition, since the rotary tillage mechanism 2 usually cannot travel on the road. Therefore, to ensure that the present invention can travel on the road normally, the rotary tillage mechanism 2 needs to be retracted during non-cultivation periods. At this time, the traction mechanism can be used to rotate the rotary tillage mechanism 2 to lift the rotary tillage mechanism 2 off the ground. As shown in Figure 2 the figure, the tipping drive member 6 in this embodiment has a pushing function and can directly rotate the tipping frame 3, thereby driving the fixed frame 4 and the rotary tillage mechanism 2 to rotate, so that the entire rotary tillage mechanism 2 is lifted off the ground. The tipping drive member 6 can adopt a hydraulic piston member, and of course, it can also adopt any one of a screw rod, a pneumatic piston assembly, an electric-driven chain transmission mechanism, and a wire winding mechanism.

[0039] In this embodiment, the flipping driving member 6 is located below the pivot joint between the tractor 1 and the flipping frame 3. In this way, when the flipping driving member 6 works, the formed distance is shorter and the overall length does not need to be too long.

[0040] Since the flipping frame 3 and the fixed frame 4 are movably connected through the loose-joint link mechanism 5, when the flipping driving member 6 directly drives the flipping frame 3 to rotate, if the loose-joint link mechanism 5 directly receives force and drives the flipping frame 3 to rotate, it may cause the loose-joint structures 50 at both ends of the loose-joint link mechanism 5 to be overstressed and fall off or be damaged. Therefore, a better way is to drive through a traction chain 7. The traction chain 7 is located between the flipping frame 3 and the fixed frame 4 and has an appropriate redundancy reserved. When the flipping frame 3 rotates, in the initial stage, due to the existence of the loose-joint link mechanism 5, the fixed frame 4 will not be directly driven to rotate. As the flipping frame 3 continues to rotate, the traction chain 7 is tightened, and then the fixed frame 4 is pulled to start rotating with the flipping frame 3 until the entire rotary tillage mechanism 2 is lifted off the ground and suspended.

[0041] In order to increase the torque and reduce the force, the tension borne by the traction chain 7 is preferably distributed directly along the tangent direction of the rotation of the fixed frame 4. Therefore, in this embodiment, one end of the traction chain 7 can be directly fixed to the end of the suspension rod 33 of the flipping frame. Since the suspension rod 33 of the flipping frame extends towards the fixed frame 4 and the distance from its end to the fixed frame 4 is relatively short, fixing the traction chain 7 to the end of the suspension rod 33 of the flipping frame can effectively shorten the length of the traction chain 7 and make its tension as consistent as possible with the tangent direction of the rotation of the fixed frame 4, thereby reducing the force. The traction chain 7 in the present invention can be a traction wire or a rope.

[0042] In addition, for the first embodiment, when the rotary tillage device 2 is working, as the cutter shaft 22 runs, the tillage depth of the rotary cutter 20 may gradually decrease downward. Therefore, in order to ensure that the tillage depth of the rotary tillage device 2 remains consistent, a support mechanism 8 needs to be provided. As shown in Figure 1 、 Figure 2 、 Figure 3 A support mechanism 8 is also provided at one end close to the tractor 1. The support mechanism 8 includes: two support arms 81 with adjustable heights and a support plate 82 located at the lower ends of the two support arms 81; the support plate 82 tilts upward in the direction towards the tractor 1, and its lower surface is a plane or a curved surface. Due to the existence of the support plate 82, its contact surface with the land is large, so the pressure on the land is small, so that the entire rotary tillage mechanism 2 will not gradually sink into the land and the tillage depth of the plowed land remains consistent. The traction mechanism 30 drives the flipping frame 3 to rotate through the flipping driving member 6, pulls the fixed frame 4 and the rotary tillage mechanism 2 to rotate, and then the rotary tillage mechanism 2 and the support mechanism 8 are separated from the bottom surface and suspended.

[0043] The way for the support mechanism 8 to adjust the height is as follows: A sleeve 83 is fixed on the rotary tillage mechanism 2. The support arm 81 is inserted into the sleeve 83 and fixed in the sleeve 83 by a pin. A plurality of positioning holes 810 for cooperating with the pin are formed on the support arm 81. Thus, the height adjustment of the support arm 81 can be achieved by the cooperation of the pin and the positioning holes 810 at different heights. Of course, this height adjustment method can also be adjusted by a screw structure.

[0044] See Figure 6 As shown, this is the second embodiment of the present invention. In this second embodiment, the traction mechanism 30 includes: a support frame 35 fixed on the tractor 1, a loose-joint connecting rod mechanism 5 connected between the tractor 1 and the base 21. The flipping driving member 6 is installed on the support frame 35 and pivotally connected to the base 21. The flipping driving member 6 is located above the loose-joint connecting rod mechanism 5. It can also achieve the traction purpose, and can directly drive the rotary tillage device 2 to flip by the flipping driving member 6.

[0045] See Figure 7 As shown, this is the third embodiment of the present invention. In this third embodiment, the support mechanism 8 is arranged at one end of the base 21 of the rotary tillage mechanism 2 away from the tractor 1. The support mechanism 8 is a movable plate 84 pivotally connected to the base 21. In the working state of the agricultural rotary tiller, the movable plate 84 is in contact with the ground. The support of the entire rotary tillage mechanism 2 is achieved through the movable plate 84, so that the entire rotary tillage mechanism 2 will not gradually sink into the soil, and the depth of the plowed soil is kept consistent. In the non-working state of the agricultural rotary tiller or in the suspended state driven by the flipping driving member 6, the movable plate 84 naturally hangs down under the action of gravity.

[0046] Certainly, the above are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. An agricultural rotary tiller, comprising: a towing tractor (1), a rotary tilling mechanism (2), and a towing mechanism (30) for connecting the towing tractor (1) and the rotary tilling mechanism (2), characterized in that: the towing tractor (1) comprises: a locomotive body (10) with crawlers and a towing motor (11) installed on the towing tractor (1) for driving the crawler drive wheels to run; the rotary tilling mechanism (2) comprises: a base (21), a cutter shaft (22) installed on the base (21), and a rotary tilling motor (23) for driving the cutter shaft (22) to rotate. Rotary blades (20) are distributed along the axial direction of the cutter shaft (22); the towing mechanism (30) uses a loose-joint link mechanism (5) to movably connect the rotary tilling mechanism (2) to the towing tractor (1); a support mechanism (8) for supporting the rotary tilling mechanism (2) is further provided on the rotary tilling mechanism (2); a turning drive member (6) is provided between the towing tractor (1) and the towing mechanism (30). By driving the towing mechanism (30) to rotate through the turning drive member (6), the rotary tilling mechanism (2) and the support mechanism (8) provided on the rotary tilling mechanism (2) are driven to leave the ground; the towing mechanism (30) comprises: a turning frame (3) pivotally connected to the towing tractor (1), a fixed frame (4) fixed on the base (21) of the rotary tilling mechanism (2), and a loose-joint link mechanism (5) connected between the turning frame (3) and the fixed frame (4). The turning drive member (6) is installed on the towing tractor (1) and pivotally connected to the turning frame (3), and the turning drive member (6) is located below the pivotal connection part between the towing tractor (1) and the turning frame (3); a towing chain (7) is further provided between the turning frame (3) and the fixed frame (4); the turning frame (3) of the towing mechanism (30) comprises a turning frame main rod (31), turning frame longitudinal rods (32), turning frame suspension rods (33), and a turning sub-frame (34). The two turning frame longitudinal rods (32) are longitudinally arranged above the turning frame main rod (31), and the turning frame suspension rods (33) are located at the upper ends of each turning frame longitudinal rod (32) and extend towards the rotary tilling mechanism (2); the loose-joint link mechanism (5) comprises two upper loose-joint link mechanisms (51) and two lower loose-joint link mechanisms (52) symmetrically distributed in an "eight" shape. The loose-joint structures (50) for connecting one ends of the two upper loose-joint link mechanisms (51) are located on both sides of the turning frame main rod (31) near the outer side; the loose-joint structures (50) for connecting one ends of the two lower loose-joint link mechanisms (52) are located on the turning sub-frame (34), and the distance between the two loose-joint structures (50) on the turning sub-frame (34) is smaller than the distance between the two loose-joint structures (50) on the turning frame main rod (31).

2. The agricultural rotary tiller according to claim 1, characterized in that: the support mechanism (8) is arranged at one end of the base (21) of the rotary tilling mechanism (2) close to the towing tractor (1).

3. The agricultural rotary tiller according to claim 2, characterized in that: The described support mechanism (8) includes: a support arm (81) and a support plate (82) located at the lower end of the support arm (81), and the support plate (82) is tilted upward in the direction towards the tractor (1).

4. An agricultural rotary tiller according to claim 3, characterized in that: The connection between the support arm (81) and the base (21) is an adjustable-height movable connection.

5. An agricultural rotary tiller according to claim 1, characterized in that: The support mechanism (8) is arranged at one end of the base (21) of the rotary tilling mechanism (2) away from the tractor (1), and the support mechanism (8) is a movable plate (84) pivotally connected to the base (21). In the working state of the agricultural rotary tiller, the movable plate (84) is in contact with the ground.

6. An agricultural rotary tiller according to claim 1, characterized in that: The turning drive member (6) is any one of a hydraulic piston member, a lead screw, a pneumatic piston member, an electrically driven chain drive mechanism, and a wire winding mechanism.

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