Double-crank rotary tillage type cultivator

Abstract

The application discloses a double-crank rotary tillage type ploughing and covering micro plough, relates to the technical field of micro ploughs, and comprises a micro plough body, an internal combustion engine and a wheel system are integrated on the micro plough body, the internal combustion engine is assembled to drive the wheel system to drive the micro plough body to move, a ploughing unit is arranged on the micro plough body, and the ploughing unit comprises: a protective shell which is connected to the bottom of the micro plough body through a support, and rotary tillage roller knives for ploughing are arranged on the inner side of the bottom of the protective shell. In the application, rotary tillage roller knives and a soil breaking mechanism are arranged side by side on the bottom of the micro plough body, the rotary tillage roller knives are responsible for conventional rotary tillage and ploughing operation, and a plurality of spiral soil breaking drill bits which are equidistantly arranged in the soil breaking mechanism can be inserted into the ground reciprocatingly and ceaselessly under the action of the soil inserting mechanism driven by the double-crank structure, so that large soil blocks remaining after rotary tillage are actively broken, and the soil breaking is more complete and uniform.

Description

Technical Field

[0001] This invention belongs to the field of micro-tiller technology, specifically a double-crank rotary tiller for ridging. Background Technology

[0002] Mini tillers are small tillage machines powered by small diesel or gasoline engines. They are characterized by their light weight, small size, and simple structure. They are widely used in farmland cultivation in different terrains such as plains, mountains, and hills. Their main function is to use rotating blades to break up, loosen, mix, and level the soil, completing the tillage and harrowing operations in one go. With the continuous improvement of agricultural mechanization, mini tillers have played an important role in replacing traditional animal-powered tillage and reducing labor intensity.

[0003] However, existing mini-tillers still have many technical shortcomings in practical applications, which restricts the further improvement of their tillage efficiency and work quality. The soil-breaking ability of existing mini-tillers is limited, making it difficult to deal with severely compacted soil. Conventional mini-tillers mainly rely on the rotation and cutting of rotary tillage rollers to break up soil, but for plots with large soil clods or severe soil compaction, the cutting of the rotary tillage rollers alone is often insufficient to completely break up the soil clods. In addition, soil moisture is an important factor affecting sowing quality and crop growth. Too low a moisture level is not conducive to seed germination, while too high a moisture level increases the tillage resistance of subsequent seeders and tillers. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention proposes a double-crank rotary tiller for ridging.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A dual-crank rotary tiller includes a tiller body, on which an internal combustion engine and a wheel system are integrated. The internal combustion engine drives the wheel system to move the tiller body. A tillage unit is provided on the tiller body, and the tillage unit includes:

[0007] The protective shell is connected to the bottom of the main body of the micro-tiller via a bracket. The inner bottom of the protective shell is provided with a rotary tiller blade for soil cultivation. The rotary tiller blade is connected to the working end of the internal combustion engine via a gearbox. The end of the rotary tiller blade is also provided with a rotating shaft that is rotatably mounted on the protective shell.

[0008] The soil breaking mechanism is arranged side by side with the rotary tillage roller, and the soil breaking mechanism includes multiple equidistant spiral soil breaking drill bits, the spiral soil breaking drill bits having internal channels inside.

[0009] The double-crank structure has a transmission mechanism located on the end of the rotating shaft away from the rotary tiller blade. The end of the double-crank structure away from the rotating shaft has two transmission ends, namely a first transmission end and a second transmission end. The first transmission end is equipped with a soil-inserting mechanism for driving the soil-breaking mechanism to insert into the soil and break up soil clods. The second transmission end is equipped with a valve control mechanism for driving the internal channels of the soil-breaking mechanism to open intermittently and in an orderly manner.

[0010] As a further preferred embodiment of this technical solution: the main body of the micro-tiller is also equipped with a water storage tank for storing clean water. A dual-chamber transfer conversion box is provided below the internal combustion engine and the water storage tank. The dual-chamber transfer conversion box has two chambers, namely chamber number one and chamber number two. Chamber number one is connected to the water storage tank and is equipped with a water pump. Chamber number two is connected to the internal combustion engine and is equipped with a heat exchanger and a fan. The heat exchanger is used to replace the heat generated by the internal combustion engine. Chamber number two is also equipped with an air connection channel. The fan delivers the air heated by the heat exchanger to the internal channel of the spiral soil-breaking drill bit.

[0011] Both the No. 1 chamber and the No. 2 chamber are connected to the No. 2 connecting pipe, and a solenoid valve is installed at the connection point between the No. 1 chamber and the No. 2 connecting pipe. Several corrugated pipes are connected to the end of the No. 2 connecting pipe away from the dual-chamber transfer box, and the end of the corrugated pipe away from the No. 2 connecting pipe is connected to the No. 1 connecting pipe. The No. 1 connecting pipe is connected to the internal channel of the spiral soil-breaking drill bit.

[0012] As a further preferred embodiment of this technical solution: the soil-breaking mechanism further includes:

[0013] An elastic reset assembly is provided, with its top end fixedly connected to the bottom of the main body of the micro-tiller. A second gearbox is fixedly connected to the bottom of the elastic reset assembly, and multiple spiral soil-breaking drill bits are rotatably mounted at the bottom of the second gearbox. A drive motor for jointly driving the multiple spiral soil-breaking drill bits to rotate is provided on the second gearbox.

[0014] The pressure plate is fixedly connected to the side wall of the No. 2 gearbox and used in conjunction with the soil insertion mechanism.

[0015] As a further preferred embodiment of this technical solution: the elastic reset component includes:

[0016] An outer fixed sleeve is fixedly connected to the bottom of the main body of the micro-tiller, and an inner movable shaft is slidably provided on the inner side of the outer fixed sleeve. The second gearbox is fixedly connected to the bottom of the inner movable shaft.

[0017] A spring is disposed on the inner side of the outer fixed sleeve, and the two ends of the spring are fixedly connected to the outer fixed sleeve and the inner movable shaft, respectively.

[0018] As a further preferred embodiment of this technical solution: the internal channel includes:

[0019] A transmission pipe is fixedly connected to the top of the spiral soil-breaking drill bit, and the transmission pipe is connected to the No. 2 gearbox. The transmission pipe is located inside the No. 1 connecting pipe, and the No. 1 connecting pipe is fixedly connected to the bottom of the No. 2 gearbox. The transmission pipe has a communication port that communicates with the No. 1 connecting pipe.

[0020] An inner tube is located inside the spiral soil-breaking drill bit and is connected to the transmission tube. Several circular holes are arranged on the side wall of the inner tube, which are intersected with the spiral soil-breaking drill bit.

[0021] As a further preferred embodiment of this technical solution: the double crank structure includes:

[0022] The main rotating rod is fixedly connected to the end of the rotating shaft, and a connecting rod is hinged to the end of the main rotating rod away from the rotating shaft. The soil insertion mechanism is connected to the end of the connecting rod away from the main rotating rod.

[0023] The auxiliary rotating rod is also rotatably mounted at the end of the main rotating rod away from the rotating shaft. A second connecting rod is rotatably mounted at the end of the auxiliary rotating rod away from the main rotating rod, and the valve control mechanism is connected to the end of the second connecting rod away from the main rotating rod.

[0024] As a further preferred embodiment of this technical solution: the soil insertion mechanism includes:

[0025] The pressing frame is rotatably mounted on the first connecting rod, and the top of the pressing frame is an inclined plate. The inclined plate is used in conjunction with the pressure plate, and a baffle is provided at the bottom of the inclined plate.

[0026] As a further preferred embodiment of this technical solution: the valve control mechanism includes:

[0027] A movable frame, on which a connecting block is provided, the connecting block being rotatably mounted on the second connecting rod;

[0028] A U-shaped frame is fixedly mounted on a movable frame. The U-shaped frame is equipped with a valve control rod, and valves are installed between the second connecting pipe and each of the corrugated pipes. The valve control rod is used to control the opening and closing of the valves.

[0029] As a further preferred embodiment of this technical solution: the soil-breaking mechanism further includes:

[0030] Magnet No. 1 and Magnet No. 2 are magnetically attracted to each other. Magnet No. 1 is fixedly installed at the bottom of the outer fixed sleeve column, and Magnet No. 2 is fixedly installed on the outer wall of the inner movable shaft.

[0031] As a further preferred embodiment of this technical solution: the tillage unit further includes two sets of guiding components, one set of guiding components connecting the valve control mechanism and the main body of the micro-tiller, and the other set of guiding components connecting the soil insertion mechanism and the main body of the micro-tiller. Each guiding component includes:

[0032] There are two sliding shafts, which are connected to the main body of the micro-tiller via a fixing frame, and each sliding shaft has a slider slidably mounted on it;

[0033] A connecting post is fixedly installed at the bottom of the slider, and the end of the connecting post away from the slider is connected to a baffle or movable frame.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] In this invention, rotary tillage rollers and soil breaking mechanism are arranged side by side at the bottom of the main body of the micro tiller. The rotary tillage rollers are responsible for conventional rotary tillage and soil breaking operations, while multiple spiral soil breaking drills arranged at equal intervals in the soil breaking mechanism can repeatedly insert into the ground surface under the action of the soil insertion mechanism driven by the double crank structure, actively breaking up large clods of soil left after rotary tillage, making the soil breaking more thorough and uniform.

[0036] Meanwhile, the rotational motion of the shaft at the end of the rotary tiller is converted into the reciprocating pressing motion of the soil insertion mechanism and the alternating on / off control of the valve control mechanism through a double-crank structure driven by the rotating shaft at the end of the rotary tiller. When the soil insertion mechanism drives the spiral soil-breaking drill bit into the soil, the valve control mechanism opens the internal channel. When the soil insertion mechanism releases the pressure and the drill bit is pulled out of the soil, the valve control mechanism closes the channel. This timing ensures that water or hot air is sprayed only when the drill bit is inside the soil. During rotary tillage and hilling, the selection can be made according to the actual soil moisture: when the moisture is insufficient, the water pump is started to spray water through the internal channel to humidify; when the moisture is too high, the heat generated by the internal combustion engine heat exchanger is used to heat the air and blow it into the soil for moderate drying. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0038] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0039] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0040] Figure 4 This is a partial structural diagram of the cultivated land unit of the present invention. Figure 1 ;

[0041] Figure 5 This is a partial structural cross-sectional view of the soil-inserting mechanism of the present invention;

[0042] Figure 6 This is a partial structural diagram of the cultivated land unit of the present invention. Figure 2 ;

[0043] Figure 7 This is a partial cross-sectional view of the elastic reset component in the soil-breaking mechanism of the present invention;

[0044] Figure 8 This is a partial structural diagram of the earth-breaking mechanism of the present invention.

[0045] Legend: 1. Main body of the mini tiller; 2. Tillage unit; 21. Support frame; 22. Protective shell; 23. Rotary shaft; 24. Rotary tillage roller; 25. Double crank structure; 251. Main rotating rod; 252. Connecting rod No. 1; 253. Auxiliary rotating rod; 254. Connecting rod No. 2; 26. Valve control mechanism; 261. Movable frame; 262. Connecting block; 27. Soil breaking mechanism; 271. Spiral soil breaking drill bit; 272. Gearbox No. 2; 273. Elastic reset assembly; 2731. Inner movable shaft; 2732. Outer fixed sleeve Column; 2733, Magnet No. 1; 2734, Magnet No. 2; 2735, Spring; 274, Transmission Pipe; 2741, Connecting Port; 275, Inner Pipe; 276, Round Hole; 277, Pressure Plate; 28, Soil Insertion Mechanism; 281, Pressing Frame; 282, Baffle; 283, Sloping Top Plate; 291, Fixing Frame; 292, Sliding Shaft; 293, Sliding Block; 294, Connecting Column; 210, Connecting Pipe No. 1; 3, Water Storage Tank; 31, Connecting Pipe No. 2; 32, Corrugated Pipe; 33, Double-Cavity Transfer Box. Detailed Implementation

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please see Figures 1-8 This application provides a double-crank rotary tiller, including a tiller body 1. The tiller body 1 integrates an internal combustion engine and a wheel system. The internal combustion engine drives the wheel system to move the tiller body 1. This solution only mentions the internal combustion engine and wheel system, and does not mean that it only has an internal combustion engine and wheel system; other necessary accessories are also included. Accessories of common rotary tiller models can be selected. The tiller body 1 is provided with a tillage unit 2, which includes:

[0048] The protective shell 22 is connected to the bottom of the main body 1 of the micro-tiller via the bracket 21. The inner bottom of the protective shell 22 is provided with a rotary tiller 24 for soil preparation. The rotary tiller 24 can be disassembled and installed by bolts. The rotary tiller 24 is made of high-strength stainless steel alloy and is used for tilling soil. The rotary tiller 24 is connected to the working end of the internal combustion engine via a gearbox. The end of the rotary tiller 24 is also provided with a rotating shaft 23 that is rotatably mounted on the protective shell 22.

[0049] The soil breaking mechanism 27 is arranged side by side with the rotary tillage roller 24, and the soil breaking mechanism 27 includes a plurality of equally spaced spiral soil breaking drill bits 271, and the spiral soil breaking drill bits 271 are provided with internal channels.

[0050] The double-crank structure 25 is driven at the end of the rotating shaft 23 away from the rotary tiller blade 24. The end of the double-crank structure 25 away from the rotating shaft 23 has two transmission ends, namely the first transmission end and the second transmission end. It should be noted that the first and second are not in any special order, but are only used to illustrate that the double-crank structure 25 has two transmission ends for ease of description. The first transmission end is provided with a soil insertion mechanism 28 for driving the soil breaking mechanism 27 to insert into the soil and break soil clods. The second transmission end is provided with a valve control mechanism 26 for driving the internal channel of the soil breaking mechanism 27 to open intermittently and orderly.

[0051] In this embodiment, the internal combustion engine drives the wheel system to move the main body 1 of the micro-tiller within the planting area, and the rotary tiller 24 is driven by the first gearbox to perform rotary tillage and soil preparation. During this process, the rotating shaft 23 at the end of the rotary tiller 24 can drive the valve control mechanism 26 and the soil insertion mechanism 28 to move through the transmission of the double crank structure 25. The soil insertion mechanism 28 can reciprocate and continuously apply a force to insert the spiral soil breaking drill 271 into the ground surface to break up soil clods. At the same time, the valve control mechanism 26 and the soil insertion mechanism 28 open alternately. After the spiral soil breaking drill 271 is inserted into the soil surface, the internal channel is opened, which facilitates subsequent humidity adjustment.

[0052] Furthermore, the main body 1 of the micro-tiller is also equipped with a water storage tank 3, which is used to store clean water. It should be noted that the water storage tank 3 is equipped with a connector for use with a water pipe to achieve continuous water supply. Below the internal combustion engine and the water storage tank 3, a dual-chamber transfer box 33 is provided. The dual-chamber transfer box 33 has two chambers, designated as chamber number one and chamber number two. The terms "chamber number one" and "chamber number two" are not intended to indicate any order of priority, but are merely for ease of description. Chamber number one is connected to the water storage tank 3, and... The first chamber is equipped with a water pump. The second chamber is connected to the internal combustion engine (note that the heat used here is the heat generated by the internal combustion engine's built-in heat exchanger, which collects the heat). The second chamber is equipped with a heat exchanger and a fan. The heat exchanger is used to replace the heat generated by the internal combustion engine, reduce the heat generated during the operation of the internal combustion engine, and transfer the heat to the air drawn in by the fan for heating. The second chamber is also equipped with a channel for connecting air. The fan delivers the air heated by the heat exchanger to the internal channel of the spiral soil-breaking drill bit 271.

[0053] Both the first chamber and the second chamber are connected to the second connecting pipe 31, and a solenoid valve is installed at the connection between the first chamber and the second chamber and the second connecting pipe 31. The second connecting pipe 31 is connected to several corrugated pipes 32 at the end away from the dual-chamber transfer box 33, and the corrugated pipes 32 at the end away from the second connecting pipe 31 are connected to the first connecting pipe 210. By setting the first connecting pipe 210, the communication between the spiral soil breaking drill bit 271 and its internal channel is not affected during the rotation of the spiral soil breaking drill bit 271. The first connecting pipe 210 is connected to the internal channel of the spiral soil breaking drill bit 271. It should be noted that the purpose of setting the corrugated pipes 32 is to adapt during the movement of the spiral soil breaking drill bit 271.

[0054] In this embodiment, during rotary tillage, the soil moisture is assessed, and appropriate adjustments are made accordingly. If the soil moisture is insufficient, the solenoid valve between chamber 2 and connecting pipe 31 is closed, while the solenoid valve between chamber 1 and connecting pipe 31 is opened. A water pump is then activated, allowing clean water to enter the internal channels via connecting pipe 31, corrugated pipe 32, and connecting pipe 210, and then sprayed out to humidify the soil. Conversely, if the soil moisture is too high, the solenoid valve between chamber 2 and connecting pipe 31 is opened, while the other valve is closed. A fan is then activated, blowing air heated by a heat exchanger into the tilled soil for drying (not necessarily complete drying, but only reducing localized moisture content). This facilitates the subsequent entry of the seeder and tiller, reducing tillage resistance.

[0055] Furthermore, the ground-breaking mechanism 27 also includes:

[0056] The elastic reset component 273 is fixedly connected to the bottom of the micro-tiller body 1 at its top end. A second gearbox 272 is fixedly connected to the bottom of the elastic reset component 273. Multiple spiral soil-breaking drill bits 271 are rotatably arranged at the bottom of the second gearbox 272. A drive motor for jointly driving the multiple spiral soil-breaking drill bits 271 to rotate is provided on the second gearbox 272.

[0057] The pressure plate 277 is fixedly connected to the side wall of the second gearbox 272 and is used in conjunction with the soil insertion mechanism 28.

[0058] In this embodiment, the elastic reset component 273 serves to reset and connect the second gearbox 272. After the soil insertion mechanism 28 presses the spiral soil breaking drill bit 271 into the soil, it can use its elastic potential energy to pull the spiral soil breaking drill bit 271 out of the soil. The pressure plate 277 is the force point where the soil insertion mechanism 28 applies force, and the top corner of the end away from the second gearbox 272 is rounded.

[0059] Furthermore, the elastic reset component 273 includes:

[0060] An outer fixed sleeve 2732 is fixedly connected to the bottom of the micro-tiller body 1, and an inner movable shaft 2731 is slidably provided on the inner side of the outer fixed sleeve 2732. The second gearbox 272 is fixedly connected to the bottom of the inner movable shaft 2731.

[0061] Spring 2735 is disposed on the inner side of outer fixed sleeve 2732, and the two ends of spring 2735 are fixedly connected to outer fixed sleeve 2732 and inner movable shaft 2731 respectively.

[0062] Furthermore, the internal channel includes:

[0063] The transmission pipe 274 is fixedly connected to the top of the spiral soil-breaking drill bit 271, and the transmission pipe 274 is connected to the second gearbox 272. The transmission pipe 274 is located inside the first connecting pipe 210, and the first connecting pipe 210 is fixedly connected to the bottom of the second gearbox 272. The transmission pipe 274 has a communication port 2741 that communicates with the first connecting pipe 210.

[0064] An inner tube 275 is disposed inside the spiral soil-breaking drill bit 271, and the inner tube 275 is connected to the transmission tube 274. A plurality of circular holes 276 are arranged on the side wall of the inner tube 275, which are intersected with the spiral soil-breaking drill bit 271.

[0065] In this embodiment, when hot air or crisp air is delivered to the first connecting pipe 210, it enters the interior of the transmission pipe 274 through the connecting port 2741, and is sprayed out through the inner pipe 275 and the round hole 276 for appropriate humidification or drying.

[0066] Furthermore, the double-crank structure 25 includes:

[0067] The main rotating rod 251 is fixedly connected to the end of the rotating shaft 23, and the end of the main rotating rod 251 away from the rotating shaft 23 is hinged to a first connecting rod 252. The soil insertion mechanism 28 is connected to the end of the first connecting rod 252 away from the main rotating rod 251.

[0068] The auxiliary rotating rod 253 is also rotatably mounted at the end of the main rotating rod 251 away from the rotating shaft 23. A second connecting rod 254 is rotatably mounted at the end of the auxiliary rotating rod 253 away from the main rotating rod 251. The valve control mechanism 26 is connected to the end of the second connecting rod 254 away from the main rotating rod 251.

[0069] In this embodiment, when the rotary tiller 24 is rotary tilling, the rotating shaft 23 rotates along with it, which in turn drives the first connecting rod 252 and the auxiliary rotating rod 253 at the end to rotate. The first connecting rod 252 drives the soil insertion mechanism 28 on it to reciprocate, and the auxiliary rotating rod 253 drives the second connecting rod 254 to swing, and drives the valve control mechanism 26 to move in the opposite direction to the soil insertion mechanism 28.

[0070] Furthermore, the soil insertion mechanism 28 includes:

[0071] The pressing frame 281 is rotatably mounted on the first connecting rod 252, and the top of the pressing frame 281 is an inclined top plate 283. The inclined top plate 283 is used in conjunction with the pressure plate 277, and a baffle 282 is provided at the bottom of the inclined top plate 283.

[0072] In this embodiment, when the double crank structure 25 drives the soil insertion mechanism 28 to move, the inclined top plate 283 can squeeze the pressure plate 277, thereby driving multiple spiral soil breaking drill bits 271 on the second gearbox 272 to insert into the soil. In conjunction with the drive motor, the multiple spiral soil breaking drill bits 271 are driven to rotate and break the surrounding soil clods and insert into the soil after rotary tillage through the transmission of the second gearbox 272. Afterwards, they can be reset through the second gearbox 272.

[0073] Furthermore, the valve control mechanism 26 includes:

[0074] A movable frame 261 is provided with a connecting block 262, which is rotatably mounted on the second connecting rod 254;

[0075] A U-shaped frame is fixedly mounted on the movable frame 261. The U-shaped frame is equipped with a valve control rod, and valves are provided between the second connecting pipe 31 and each of the bellows 32. The valve control rod is used to control the opening and closing of the valves.

[0076] In this embodiment, since the valve control mechanism 26 and the soil insertion mechanism 28 are in a cross reciprocating motion, when the soil insertion mechanism 28 drives the spiral soil breaking drill bit 271 to insert into the soil, the valve control mechanism 26 drives the valve stem to open the valve. When the soil insertion mechanism 28 removes the pressure and the spiral soil breaking drill bit 271 is pulled out of the soil, the valve control mechanism 26 drives the valve stem to close the valve to store force, making the impact force greater. Furthermore, water will not flow out during the extraction process, saving resources.

[0077] Furthermore, the ground-breaking mechanism 27 also includes:

[0078] Magnet 2733 and magnet 2734 are magnetically attracted to each other. Magnet 2733 is fixedly mounted on the bottom of the outer fixed sleeve 2732, and magnet 2734 is fixedly mounted on the outer wall of the inner movable shaft 2731. It should be noted that both magnets 2733 and 2734 are ring-shaped. Since the elastic force of spring 2735 is uncontrollable, it will shake during the movement of the main body 1 of the micro-tiller. Therefore, the attraction of magnets 2733 and 2734 is used for stabilization. When the soil insertion mechanism 28 presses the pressure plate 277, the pressure is sufficient to separate magnets 2733 and 2734. After the soil insertion mechanism 28 removes the pressure, spring 2735 drives it to return to its original position. At the same time, magnet 2733 can block it, preventing the pressure plate 277 from floating up and down under the action of elastic force, which would cause the soil insertion mechanism 28 to be misaligned.

[0079] Furthermore, the tillage unit 2 also includes two sets of guiding components. One set of guiding components is connected between the valve control mechanism 26 and the micro-tiller body 1, and the other set of guiding components is connected between the soil insertion mechanism 28 and the micro-tiller body 1. Each guiding component includes:

[0080] There are two sliding shafts 292, which are connected to the main body 1 of the micro-tiller via a fixing frame 291, and each sliding shaft 292 is slidably provided with a slider 293;

[0081] The connecting post 294 is fixedly installed at the bottom of the slider 293, and the end of the connecting post 294 away from the slider 293 is connected to the baffle 282 or the movable frame 261.

[0082] The guide assembly serves as a guide, enabling the valve control mechanism 26 and the soil insertion mechanism 28 to move along the direction given by the slide shaft 292 under the action of the double crank structure 25.

[0083] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A double-crank rotary tiller for ridging, comprising a tiller body (1), wherein an internal combustion engine and a wheel system are integrated on the tiller body (1), and the internal combustion engine is used to drive the wheel system to move the tiller body (1), characterized in that: The main body (1) of the micro-tiller is provided with a tillage unit (2), the tillage unit (2) comprising: The protective shell (22) is connected to the bottom of the micro-tiller body (1) via a bracket (21). The inner bottom of the protective shell (22) is provided with a rotary tiller blade (24) for soil cultivation. The rotary tiller blade (24) is connected to the working end of the internal combustion engine via a gearbox. The end of the rotary tiller blade (24) is also provided with a rotating shaft (23) that is rotatably mounted on the protective shell (22). The soil breaking mechanism (27) is arranged side by side with the rotary tillage roller (24), and the soil breaking mechanism (27) includes a plurality of equally spaced spiral soil breaking drill bits (271), the spiral soil breaking drill bits (271) having internal channels inside; The double crank structure (25) is driven at the end of the rotating shaft (23) away from the rotary tiller (24). The end of the double crank structure (25) away from the rotating shaft (23) has two transmission ends, namely the first transmission end and the second transmission end. The first transmission end is provided with a soil insertion mechanism (28) for driving the soil breaking mechanism (27) to insert into the soil and break the soil clods. The second transmission end is provided with a valve control mechanism (26) for driving the internal channel of the soil breaking mechanism (27) to open intermittently and orderly.

2. The double-crank rotary tiller for ridging and shaping according to claim 1, characterized in that, The main body (1) of the micro-tiller is also equipped with a water tank (3), which is used to store clean water. A dual-chamber transfer conversion box (33) is set below the internal combustion engine and the water tank (3). The two chambers of the dual-chamber transfer conversion box (33) are chamber 1 and chamber 2. Chamber 1 is connected to the water tank (3), and a water pump is set inside chamber 1. Chamber 2 is connected to the internal combustion engine. A heat exchanger and a fan are set inside chamber 2. The heat exchanger is used to replace the heat generated by the internal combustion engine. An air channel is set on chamber 2. The fan delivers the air heated by the heat exchanger to the internal channel of the spiral soil-breaking drill bit (271). Both the first chamber and the second chamber are connected to the second connecting pipe (31), and a solenoid valve is provided at the connection between the first chamber and the second chamber and the second connecting pipe (31). The second connecting pipe (31) is connected to several corrugated pipes (32) at the end away from the dual-chamber transfer box (33), and the corrugated pipe (32) is connected to the first connecting pipe (210) at the end away from the second connecting pipe (31). The first connecting pipe (210) is connected to the internal channel of the spiral soil breaking drill bit (271).

3. A double-crank rotary tiller for ridging and shaping according to claim 2, characterized in that, The ground-breaking mechanism (27) also includes: The top of the elastic reset assembly (273) is fixedly connected to the bottom of the micro-tiller body (1), and the bottom of the elastic reset assembly (273) is fixedly connected to a second gearbox (272). Multiple spiral soil-breaking drill bits (271) are rotatably arranged at the bottom of the second gearbox (272). The second gearbox (272) is provided with a drive motor for jointly driving the multiple spiral soil-breaking drill bits (271) to rotate. The pressure plate (277) is fixedly connected to the side wall of the No. 2 gearbox (272) and used in conjunction with the soil insertion mechanism (28).

4. A double-crank rotary tiller for ridging and shaping according to claim 3, characterized in that, The elastic reset component (273) includes: An outer fixed sleeve (2732) is fixedly connected to the bottom of the micro-tiller body (1), and an inner movable shaft (2731) is slidably provided on the inner side of the outer fixed sleeve (2732), and the second gearbox (272) is fixedly connected to the bottom of the inner movable shaft (2731); A spring (2735) is disposed on the inner side of the outer fixed sleeve (2732), and the two ends of the spring (2735) are fixedly connected to the outer fixed sleeve (2732) and the inner movable shaft (2731) respectively.

5. A double-crank rotary tiller for ridging and shaping according to claim 4, characterized in that, The internal channel includes: The transmission pipe (274) is fixedly connected to the top of the spiral soil-breaking drill bit (271), and the transmission pipe (274) is connected to the second gearbox (272). The transmission pipe (274) is located inside the first connecting pipe (210), and the first connecting pipe (210) is fixedly connected to the bottom of the second gearbox (272). The transmission pipe (274) has a connecting port (2741) that communicates with the first connecting pipe (210). An inner tube (275) is provided on the inner side of the spiral soil breaking drill bit (271), and the inner tube (275) is connected to the transmission tube (274). A number of circular holes (276) are arranged on the side wall of the inner tube (275) and intersect with the spiral soil breaking drill bit (271).

6. A double-crank rotary tiller for ridging and shaping according to claim 5, characterized in that, The double crank structure (25) includes: The main rotating rod (251) is fixedly connected to the end of the rotating shaft (23), and a connecting rod (252) is hinged to the end of the main rotating rod (251) away from the rotating shaft (23). The soil insertion mechanism (28) is connected to the end of the connecting rod (252) away from the main rotating rod (251). The auxiliary rotating rod (253) is also rotatably mounted at the end of the main rotating rod (251) away from the rotating shaft (23). The second connecting rod (254) is rotatably mounted at the end of the auxiliary rotating rod (253) away from the main rotating rod (251). The valve control mechanism (26) is connected to the end of the second connecting rod (254) away from the main rotating rod (251).

7. A double-crank rotary tiller for ridging and shaping according to claim 6, characterized in that, The soil insertion mechanism (28) includes: The pressing frame (281) is rotatably mounted on the first connecting rod (252), and the top of the pressing frame (281) is an inclined top plate (283), which is used in conjunction with the pressure plate (277). A baffle (282) is provided at the bottom of the inclined top plate (283).

8. A double-crank rotary tiller for ridging and shaping according to claim 7, characterized in that, The valve control mechanism (26) includes: A movable frame (261) is provided with a connecting block (262), which is rotatably mounted on the second connecting rod (254); The U-shaped frame is fixedly mounted on the movable frame (261). The U-shaped frame is equipped with a valve control rod, and valves are provided between the second connecting pipe (31) and each of the bellows (32). The valve control rod is used to control the opening and closing of the valves.

9. A double-crank rotary tiller for ridging and shaping according to claim 4, characterized in that, The ground-breaking mechanism (27) also includes: Magnet No. 1 (2733) and Magnet No. 2 (2734) are magnetically attracted to each other. Magnet No. 1 (2733) is fixedly installed at the bottom of the outer fixed sleeve column (2732), and Magnet No. 2 (2734) is fixedly installed on the outer wall of the inner movable shaft (2731).

10. A double-crank rotary tiller for ridging and shaping according to claim 8, characterized in that, The tillage unit (2) further includes two sets of guiding components. One set of guiding components is connected between the valve control mechanism (26) and the main body (1) of the micro-tiller, and the other set of guiding components is connected between the soil insertion mechanism (28) and the main body (1) of the micro-tiller. Each of the guiding components includes: There are two sliding shafts (292), which are connected to the main body (1) of the micro-tiller by a fixing frame (291), and each sliding shaft (292) is slidably provided with a slider (293). A connecting post (294) is fixedly installed at the bottom of the slider (293), and the end of the connecting post (294) away from the slider (293) is connected to the baffle (282) or the movable frame (261).

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