Adjustable rotary cultivator with automatic ditching function

Abstract

The invention relates to the technical field of rotary cultivators, in particular to an automatic ditching adjustable rotary cultivator which comprises a rotary cultivator body, an auxiliary assembly is installed in the rotary cultivator body and comprises a rotary tillage roller rotating in the rotary cultivator body, the two ends of the rotary tillage roller are connected with first reciprocating lead screws through first synchronous belts, and the two ends of the rotary tillage roller are connected with second reciprocating lead screws through second synchronous belts. And one end of each first reciprocating lead screw is connected with a second reciprocating lead screw through a second synchronous belt, the second reciprocating lead screws are connected with threaded blocks in a sliding mode, and piston pipes are installed on the outer surfaces of the threaded blocks. The telescopic frame drives the two groups of furrow openers to reciprocate, so that each group of furrow openers pretreats soil, crushes hard shells or hardened layers on the surface layer of the soil, reduces the impact caused by direct cutting of blades of the rotary cultivator into high-resistance soil, cuts off root systems of weeds or crop residues by the reciprocating furrow openers, and reduces the probability that the blades of the rotary cultivator are wound by the weeds.

Description

Technical Field

[0001] This invention relates to the field of rotary tiller technology, specifically to an adjustable rotary tiller with automatic ditching. Background Technology

[0002] A rotary tiller is an agricultural machine that uses rotating blades as its working parts. Driven by a power source, such as the rear output shaft of a tractor, the blades rotate at high speed to break up, loosen, mix, and level the soil. It integrates functions such as breaking up soil, leveling the land, and removing stubble, and can complete multiple processes such as plowing and harrowing in traditional farming in one go, significantly improving work efficiency. Under normal conditions, the surface of the soil may have a hard crust or compacted layer, and there may be weed roots or crop residues. If a rotary tiller is used directly, the rotary tiller blades will cut directly into the high-resistance soil and be subjected to a large impact. At the same time, weeds are also prone to getting tangled in the rotary tiller blades, which increases the probability of weeds getting tangled in the rotary tiller blades, accelerates the wear of the rotary tiller blades, and affects the working efficiency of the rotary tiller. Summary of the Invention

[0003] The purpose of this invention is to provide an adjustable rotary tiller with automatic ditching. Each set of first reciprocating lead screws drives the telescopic frame to reciprocate through every two sets of threaded sleeves. The telescopic frame drives two sets of ditchers to reciprocate, so that each set of ditchers pre-treats the soil, breaks up the hard crust or compacted layer on the soil surface, reduces the impact of the rotary tiller blades directly cutting into high-resistance soil, and the reciprocating ditchers cut off the roots of weeds or crop residues, reducing the probability of weeds getting tangled in the rotary tiller blades.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an adjustable rotary tiller with automatic ditching, comprising a rotary tiller, wherein an auxiliary component is installed inside the rotary tiller, the auxiliary component including a rotary tiller roller rotating inside the rotary tiller, both ends of the rotary tiller roller being connected to a first reciprocating screw via a first synchronous belt, one end of the first reciprocating screw being connected to a second reciprocating screw via a second synchronous belt, a threaded block being slidably connected to the second reciprocating screw, a piston tube being installed on the outer surface of the threaded block, one side of the piston tube being connected to one end of the rotary tiller roller, and the rotary tiller roller being provided with multiple sets of nozzles; The rotary tiller is equipped with a ditching assembly, which includes two sets of telescopic frames. Two sets of ditchers are fixedly installed at the output ends of the two sets of telescopic frames. Telescopic cylinders are fixedly installed on both sides of the two sets of telescopic frames. One end of the telescopic cylinder is connected to the other side of the piston tube. Two sets of threaded sleeves are fixedly installed at one end of the two sets of first reciprocating screws. The threaded sleeves are slidably connected to the first reciprocating screws.

[0005] Preferably, both sets of first reciprocating screws are mounted on one side of the rotary tiller via a fixing frame, one end of each set of second reciprocating screws passes through one side of each set of piston tubes, and one end of the second reciprocating screw rotates inside the piston tube, and both sets of piston tubes are fixedly mounted on the rotary tiller.

[0006] Preferably, both sets of the second reciprocating lead screws are connected to the two sets of threaded blocks through ball nut pairs, both sets of piston tubes are provided with sliding grooves, and both sets of threaded blocks are provided with sliders that slide inside each set of sliding grooves on both sides.

[0007] Preferably, protective frames are fixedly installed on both sides of the rotary tiller, and a first pipe is connected to one side of each of the two sets of piston tubes, with a first one-way valve provided on the first pipe.

[0008] Preferably, one end of each of the two sets of first pipes penetrates one side of the two sets of protective frames, and one side of the first pipe is connected to a movable sleeve, which is fixedly installed inside the protective frame.

[0009] Preferably, both ends of the rotary tiller roller penetrate the interior of the rotary tiller and the other side of the protective frame, and both ends of the rotary tiller roller are connected to two sets of movable sleeves. Each set of movable sleeves has a first groove inside, and both ends of the rotary tiller roller have a convex ring that slides inside the two sets of first grooves.

[0010] Preferably, each telescopic cylinder has a three-way flexible hose connected to one end, and one end of the three-way flexible hose is connected to one side of the piston tube. A second one-way valve is provided at the connection between the three-way flexible hose and the piston tube. A first solenoid valve is provided on the three-way flexible hose. A first flexible hose is connected to the three-way flexible hose. The first flexible hose is connected to one side of the piston tube. A second solenoid valve is provided on the first flexible hose. A vent hole is provided on the piston tube.

[0011] Preferably, each pair of threaded sleeves is connected to each set of first reciprocating screws via ball nut pairs. The rotary tiller is provided with two sets of second grooves, and each of the two sets of telescopic frames has a protrusion that slides inside the two sets of second grooves on one side.

[0012] Compared with the prior art, the beneficial effects of the present invention are: In this invention, each set of first reciprocating screws drives the telescopic frame to reciprocate through each pair of threaded sleeves. The telescopic frame drives two sets of furrow openers to reciprocate, so that each set of furrow openers pre-treats the soil, breaks up the hard crust or compacted layer on the soil surface, reduces the impact of the rotary tiller blades directly cutting into high-resistance soil, and the reciprocating furrow openers cut off the roots of weeds or crop residues, reducing the probability of weeds getting tangled in the rotary tiller blades.

[0013] In this invention, the gas is transmitted through two sets of first pipes to the interior of two sets of movable sleeves. Since the convex rings at both ends of the rotary tiller rotate on the first grooves inside the two sets of movable sleeves, the gas is transmitted to the interior of the rotary tiller through the two sets of movable sleeves. The gas inside the rotary tiller is then sprayed out through multiple sets of nozzles. The gas washes the rotary tiller and the multiple sets of blades on the rotary tiller, preventing soil and some weeds from sticking and getting tangled on the rotary tiller and the multiple sets of blades on the rotary tiller, which would increase the rotational resistance of the rotary tiller blades, reduce the working efficiency, or even cause mechanical overload, jamming, or component damage.

[0014] In this invention, a portion of the gas is transmitted to the interior of each telescopic cylinder through the remaining ends of two sets of first hoses and two sets of three-way hoses. Each pair of second synchronous belts drives each pair of furrow openers to extend through each set of telescopic frames. After each pair of furrow openers has extended, the second solenoid valves on the two sets of first hoses close, maintaining the stability of the extension of each pair of furrow openers driven by each set of telescopic frames through each set of second synchronous belts. Then, the tractor drives the furrowing components to move through the rotary tiller, and each set of furrow openers automatically furrows the soil, achieving seamless connection between rotary tillage and furrowing, improving work efficiency and reducing power waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is one of the schematic diagrams of the auxiliary component structure of the present invention; Figure 4 This is a second schematic diagram of the auxiliary component structure of the present invention; Figure 5 This is a cross-sectional view of the auxiliary component structure of the present invention; Figure 6 This is one of the schematic diagrams of the trench component structure of the present invention; Figure 7 This is a second schematic diagram of the trenching component structure of the present invention.

[0016] In the diagram: 1. Rotary tiller; 2. Auxiliary components; 201. Rotary tiller roller; 202. First synchronous belt; 203. First reciprocating screw; 204. Second synchronous belt; 205. Second reciprocating screw; 206. Threaded block; 207. Piston tube; 208. First pipe; 209. Movable sleeve; 210. Nozzle; 211. First one-way valve; 3. Trenching assembly; 301. Telescopic frame; 302. Trencher; 303. Threaded sleeve; 304. Telescopic cylinder; 305. Three-way flexible hose; 306. Second one-way valve; 307. Protrusion; 308. First solenoid valve; 309. Second solenoid valve; 310. First flexible hose. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] See Figures 1 to 5 As shown, the present invention provides an adjustable rotary tiller with automatic ditching, including a rotary tiller 1. An auxiliary component 2 is installed inside the rotary tiller 1. The auxiliary component 2 includes a rotary tiller roller 201 that rotates inside the rotary tiller 1. Both ends of the rotary tiller roller 201 are connected to a first reciprocating screw 203 via a first synchronous belt 202. One end of the first reciprocating screw 203 is connected to a second reciprocating screw 205 via a second synchronous belt 204. A threaded block 206 is slidably connected to the second reciprocating screw 205. A piston tube 207 is installed on the outer surface of the threaded block 206. One side of the piston tube 207 is connected to one end of the rotary tiller roller 201. The rotary tiller roller 201 is provided with multiple sets of nozzles 210. The operator starts the rotary tiller 1 using a tractor and adjusts the tillage depth as needed. The tractor drives the rotary tiller 1's internal rotary roller 201 to rotate, which in turn drives multiple sets of blades to till the land. Both ends of the rotary roller 201 are connected to two sets of first reciprocating lead screws 203 via a first synchronous belt 202. These first reciprocating lead screws 203, in turn, are connected to two sets of second reciprocating lead screws 205 via a second synchronous belt 204. Each set of second reciprocating lead screws 205 interacts with a threaded block 206 via a rolling mechanism. The ball-nut assembly and the sliders on both sides of each set of threaded blocks 206 slide on two sets of grooves inside each set of piston tubes 207. Therefore, both sets of second reciprocating screws 205 drive the two sets of threaded blocks 206 to reciprocate inside the two sets of piston tubes 207. Since both sets of piston tubes 207 are provided with vent holes, external air will flow into the two sets of piston tubes 207. Both sets of threaded blocks 206 compress the gas inside the two sets of piston tubes 207. The gas is transmitted to the two sets of movable sleeves 209 through the two sets of first pipes 208 respectively. Figure 5As shown, since the convex rings at both ends of the rotary tiller 201 rotate on the first groove inside the two sets of movable sleeves 209, the gas is transmitted to the inside of the rotary tiller 201 through the two sets of movable sleeves 209. The gas inside the rotary tiller 201 is then sprayed out through multiple sets of nozzles 210. The gas washes the rotary tiller 201 and the multiple sets of blades on the rotary tiller 201, preventing soil and some weeds from sticking and getting tangled on the rotary tiller 201 and the multiple sets of blades on the rotary tiller 201. This would increase the rotational resistance of the rotary tiller 201 and the blades, reduce the working efficiency, and even cause mechanical overload, jamming, or component damage. Additionally, the first one-way valve 211 on the first pipe 208 is used to prevent the threaded block 206 from drawing air from the outside through multiple sets of nozzles 210 when it reciprocates inside the piston tube 207, causing fine soil to enter the nozzles 210 and block the nozzles 210, thus preventing the nozzles 210 from working properly. See Figures 6 to 7 As shown, the rotary tiller 1 is equipped with a ditching assembly 3, which includes two sets of telescopic frames 301. Two sets of ditch openers 302 are fixedly installed at the output ends of the two sets of telescopic frames 301. Telescopic cylinders 304 are fixedly installed on both sides of the two sets of telescopic frames 301. One end of the telescopic cylinder 304 is connected to the other side of the piston tube 207. Two sets of threaded sleeves 303 are fixedly installed at one end of the two sets of first reciprocating screws 203. The threaded sleeves 303 are slidably connected to the first reciprocating screws 203. As the two sets of threaded blocks 206 move inside the piston tube 207, the second solenoid valves 309 on the two sets of first hoses 310 close, and the first solenoid valves 308 on the two sets of three-way hoses 305 open, making the two sets of three-way hoses 305 open. Since each set of three-way hoses 305 is equipped with a second one-way valve 306 at its connection with the two sets of piston tubes 207, the threaded blocks 206 draw gas from the inside of each set of telescopic cylinders 304 through the two sets of three-way hoses 305, causing each set of telescopic cylinders 304 to be in a contracted state. Each pair of telescopic cylinders 304 drives the telescopic frame 301 to be in a contracted state. At this time, the two sets of second one-way valves 306 close, closing the open path of the two sets of three-way hoses 305. Thus, each pair of telescopic cylinders 304 drives the telescopic frame 301 to remain in a contracted state. At this time, each set of telescopic frame 301 drives the two sets of furrow openers 302 to maintain contact with the rotary tiller roller. When the rotary tiller 201 is in a state of high alignment, and both ends of the rotary tiller 201 drive the two sets of first reciprocating screws 203 to rotate through the first synchronous belt 202, since each set of two sets of threaded sleeves 303 are connected to each set of first reciprocating screws 203 through ball nut pairs, and the protrusions 307 on one side of the two sets of telescopic frames 301 slide in the two sets of second grooves on the rotary tiller 1, each set of first reciprocating screws 203 drives the telescopic frame 301 to reciprocate through each set of two sets of threaded sleeves 303. The telescopic frame 301 drives the two sets of furrow openers 302 to reciprocate, so that each set of furrow openers 302 pre-treats the soil, breaks up the hard crust or hardened layer on the surface of the soil, reduces the impact of the rotary tiller 1 blades directly cutting into the high-resistance soil, and the reciprocating furrow openers 302 cut off the roots of weeds or crop residues, reducing the probability of weeds entangled in the blades of the rotary tiller 1. After the rotary tiller 1 finishes tilling the soil, the operator uses a tractor to lift the rotary tiller 1, causing the rotary roller 201 to leave the soil. Then, the first solenoid valve 308 on the two sets of three-way hoses 305 closes, and the second solenoid valve 309 on the two sets of first hoses 310 opens. Since the tractor is still controlling the rotary roller 201 to rotate, both ends of the rotary roller 201 drive the two sets of second reciprocating screws 205 to rotate via the two sets of first synchronous belts 202, the two sets of first reciprocating screws 203, and the two sets of second synchronous belts 204. The two sets of second reciprocating screws 205 drive the two sets of threaded blocks 206 to continuously compress the gas inside the two sets of piston tubes 207. Some of the gas passes through... The remaining ends of the two sets of first hoses 310 and two sets of three-way hoses 305 are transmitted to the interior of each set of telescopic cylinders 304. Each pair of second synchronous belts 204 drives each pair of furrow openers 302 to extend through each set of telescopic frames 301. After each pair of furrow openers 302 has extended, the second solenoid valves 309 on the two sets of first hoses 310 are closed to maintain the stability of each pair of second synchronous belts 204 driving each pair of furrow openers 302 to extend through each set of telescopic frames 301. Then, the tractor drives the furrowing assembly 3 to move through the rotary tiller 1. Each set of furrow openers 302 automatically furrows the soil, realizing seamless connection between rotary tillage and furrowing, improving work efficiency and reducing power waste.

[0019] In an optional embodiment, both sets of first reciprocating screws 203 are mounted on one side of the rotary tiller 1 via a fixing frame, and one end of each set of second reciprocating screws 205 passes through one side of each set of piston tubes 207, with one end of the second reciprocating screw 205 rotating inside the piston tube 207. Both sets of piston tubes 207 are fixedly mounted on the rotary tiller 1.

[0020] It should be noted that both ends of the rotary tiller roller 201 drive two sets of first reciprocating screws 203 to rotate via the first synchronous belt 202, and the two sets of first reciprocating screws 203 drive two sets of second reciprocating screws 205 to rotate via the second synchronous belt 204.

[0021] In an optional embodiment, both sets of second reciprocating lead screws 205 are connected to two sets of threaded blocks 206 via ball nut pairs, both sets of piston tubes 207 are provided with sliding grooves, and both sides of the two sets of threaded blocks 206 are provided with sliders that slide inside each set of sliding grooves.

[0022] It should be noted that, since each set of second reciprocating screws 205 is connected to the threaded block 206 through a ball nut pair, and the sliders on both sides of each set of threaded blocks 206 slide on two sets of sliding grooves inside each set of piston tubes 207, both sets of second reciprocating screws 205 drive the two sets of threaded blocks 206 to reciprocate inside the two sets of piston tubes 207.

[0023] In an optional embodiment, protective frames are fixedly installed on both sides of the rotary tiller 1, and a first pipe 208 is connected to one side of each of the two sets of piston pipes 207. A first one-way valve 211 is provided on the first pipe 208.

[0024] It should be noted that the first one-way valve 211 on the first pipe 208 is used to prevent the threaded block 206 from drawing in outside air through multiple sets of nozzles 210 when it reciprocates inside the piston tube 207, causing fine soil to enter the nozzle 210 and block the nozzle 210, thus preventing the nozzle 210 from working properly.

[0025] In an optional embodiment, one end of each of the two sets of first pipes 208 penetrates one side of the two sets of protective frames, and one side of the first pipe 208 is connected to a movable sleeve 209, which is fixedly installed inside the protective frame.

[0026] It should be noted that both sets of threaded blocks 206 compress the gas inside the two sets of piston tubes 207, and the gas is transmitted to the two sets of movable sleeves 209 through the two sets of first pipes 208 respectively.

[0027] In an optional embodiment, both ends of the rotary tiller 201 penetrate the interior of the rotary tiller 1 and the other side of the protective frame, and both ends of the rotary tiller 201 are connected to two sets of movable sleeves 209. The interior of each set of movable sleeves 209 is provided with a first groove, and both ends of the rotary tiller 201 are provided with a convex ring that slides inside the two sets of first grooves.

[0028] It should be noted that since the convex rings at both ends of the rotary tiller 201 rotate on the first groove inside the two sets of movable sleeves 209, the gas is transmitted to the inside of the rotary tiller 201 through the two sets of movable sleeves 209, and the gas inside the rotary tiller 201 is then sprayed out through multiple sets of nozzles 210.

[0029] In an optional embodiment, each telescopic cylinder 304 is connected to a three-way hose 305 at one end. One end of the three-way hose 305 is connected to one side of the piston tube 207. A second one-way valve 306 is provided at the connection between the three-way hose 305 and the piston tube 207. A first solenoid valve 308 is provided on the three-way hose 305. A first hose 310 is connected to the three-way hose 305. The first hose 310 is connected to one side of the piston tube 207. A second solenoid valve 309 is provided on the first hose 310. A vent hole is provided on the piston tube 207.

[0030] It should be noted that the second one-way valve 306 prevents gas backflow and ensures stable contraction of the telescopic cylinder 304. The first solenoid valve 308 controls the opening and closing of the three-way hose 305 to switch between the air-suction contraction and holding states of the telescopic cylinder 304. The second solenoid valve 309 controls the opening and closing of the first hose 310 to supply air to the telescopic cylinder 304 through the piston tube 207, causing the trencher 302 to extend and lock in position. Since both sets of piston tubes 207 are equipped with vent holes, external air will flow into the interior of both sets of piston tubes 207.

[0031] In an optional embodiment, each pair of threaded sleeves 303 is connected to each set of first reciprocating screws 203 via ball nut pairs. The rotary tiller 1 is provided with two sets of second grooves, and each of the two sets of telescopic frames 301 is provided with a protrusion 307 that slides inside the two sets of second grooves on one side.

[0032] It should be noted that, since each pair of threaded sleeves 303 is connected to each set of first reciprocating screws 203 through ball nut pairs, and the protrusions 307 on one side of the two sets of telescopic frames 301 slide inside the two sets of second grooves on the rotary tiller 1, each set of first reciprocating screws 203 drives the telescopic frame 301 to reciprocate through each pair of threaded sleeves 303.

[0033] Working principle: The operator starts the rotary tiller 1 using a tractor and adjusts the tillage depth as needed. The tractor drives the rotary tiller roller 201 inside the rotary tiller 1 to rotate, which in turn drives multiple sets of blades to till the land. Both ends of the rotary tiller roller 201 are driven by a first synchronous belt 202 to rotate two sets of first reciprocating screws 203. These first reciprocating screws 203 are driven by a second synchronous belt 204 to rotate two sets of second reciprocating screws 205. Each of the second reciprocating screws 205 drives two sets of threaded blocks 206 to reciprocate within two sets of piston tubes 207. Since both sets of piston tubes 207 have vents, outside air flows into them. The threaded blocks 206 compress the air inside the piston tubes 207, and the air is then transmitted through two sets of first pipes 208 to the two sets of movable sleeves 209. Figure 5 As shown, since the convex rings at both ends of the rotary tiller 201 rotate on the first groove inside the two sets of movable sleeves 209, the gas is transmitted to the inside of the rotary tiller 201 through the two sets of movable sleeves 209. The gas inside the rotary tiller 201 is then sprayed out through multiple sets of nozzles 210, and the gas washes the rotary tiller 201 and the multiple sets of blades on the rotary tiller 201. As the two sets of threaded blocks 206 move inside the piston tube 207, the second solenoid valves 309 on the two sets of first hoses 310 close, and the first solenoid valves 308 on the two sets of three-way hoses 305 open, making the two sets of three-way hoses 305 open. Since each set of three-way hoses 305 is equipped with a second check valve 306 at its connection to the two sets of piston tubes 207, the threaded blocks 206 draw gas from the inside of each set of telescopic cylinders 304 through the two sets of three-way hoses 305. This causes each set of telescopic cylinders 304 to be in a retracted state. Each pair of telescopic cylinders 304 drives the telescopic frame 301 to be in a retracted state. At this time, the two sets of second check valves 306 close, closing the passage of the two sets of three-way hoses 305. Each pair of telescopic cylinders 304 drives the telescopic frame 301 to remain in a retracted state. At this time, each pair of telescopic frames 301 drives two sets of furrow openers 302 to remain at the same height as the rotary tiller roller 201. Then, when both ends of the rotary tiller roller 201 drive two sets of first reciprocating screws 203 to rotate through the first synchronous belt 202, each set of first reciprocating screws 203 drives the telescopic frame 301 to reciprocate through each pair of threaded sleeves 303. The telescopic frame 301 drives the two sets of furrow openers 302 to reciprocate, so that each set of furrow openers 302 pre-treats the soil, breaks up the hard crust or compacted layer on the surface of the soil, reduces the impact of the rotary tiller 1 blades directly cutting into the high-resistance soil, and the reciprocating furrow openers 302 cuts the roots of weeds or crop residues, reducing the probability of weeds entangled in the rotary tiller 1 blades. After the rotary tiller 1 finishes tilling the soil, the operator uses a tractor to lift the rotary tiller 1, causing the rotary roller 201 to leave the soil. Then, the first solenoid valve 308 on the two sets of three-way hoses 305 closes, and the second solenoid valve 309 on the two sets of first hoses 310 opens. Since the tractor is still controlling the rotary roller 201 to rotate, both ends of the rotary roller 201 drive the two sets of second reciprocating screws 205 to rotate via the two sets of first synchronous belts 202, the two sets of first reciprocating screws 203, and the two sets of second synchronous belts 204. The two sets of second reciprocating screws 205 drive the two sets of threaded blocks 206 to continuously compress the two sets of piston tubes 207. The internal gas is partially transmitted to each telescopic cylinder 304 through the remaining ends of the two sets of first hoses 310 and two sets of three-way hoses 305. Each pair of second synchronous belts 204 extends each pair of furrow openers 302 through each set of telescopic frames 301. After each pair of furrow openers 302 has extended, the second solenoid valves 309 on the two sets of first hoses 310 are closed to maintain the stability of the extension of each pair of second synchronous belts 204 through each set of telescopic frames 301. Then, the tractor drives the furrowing assembly 3 to move through the rotary tiller 1, and each pair of furrow openers 302 automatically furrows the soil.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable rotary cultivator with automatic trenching, comprising a rotary cultivator (1), characterized in that, The inside of the rotary cultivator (1) is provided with an auxiliary assembly (2), the auxiliary assembly (2) comprises a rotary cultivator roller (201) rotating in the rotary cultivator (1), the rotary cultivator roller (201) is connected with a first reciprocating screw rod (203) through a first synchronous belt (202) at both ends, the first reciprocating screw rod (203) is connected with a second reciprocating screw rod (205) through a second synchronous belt (204) at one end, the second reciprocating screw rod (205) is slidably connected with a threaded block (206), the threaded block (206) is provided with a piston pipe (207) on the outer surface, the piston pipe (207) is communicated with one end of the rotary cultivator roller (201), a plurality of spray heads (210) are arranged on the rotary cultivator roller (201). The rotary cultivator (1) is provided with a furrowing assembly (3), the furrowing assembly (3) comprises two groups of telescopic frames (301), the output ends of the two groups of telescopic frames (301) are fixedly provided with two groups of furrowing devices (302), the two sides of the two groups of telescopic frames (301) are fixedly provided with telescopic cylinders (304), one end of the telescopic cylinder (304) is communicated with the other side of the piston pipe (207), one end of the two groups of first reciprocating screw rods (203) is fixedly provided with two groups of threaded sleeves (303), and the threaded sleeves (303) are slidably connected with the first reciprocating screw rods (203).

2. An adjustable row unit gang according to claim 1 wherein, The two groups of first reciprocating screw rods (203) are installed on one side of the rotary cultivator (1) through fixing frames, one end of the two groups of second reciprocating screw rods (205) is penetrated through one side of the two groups of piston pipes (207), and the first reciprocating screw rods (203) rotate in the piston pipes (207), and the two groups of piston pipes (207) are fixedly installed on the rotary cultivator (1).

3. The adjustable row unit gang tillage tool of claim 1, wherein, The two groups of second reciprocating screw rods (205) are connected with the two groups of threaded blocks (206) through ball nut pairs, the two groups of piston pipes (207) are each provided with a sliding groove, and the two sides of the two groups of threaded blocks (206) are each provided with a sliding block sliding in the sliding groove.

4. The adjustable row unit gang tillage tool of claim 1, wherein, The rotary cultivator (1) is fixedly provided with protective frames on both sides, one side of the two groups of piston pipes (207) is communicated with first pipelines (208), and the first pipelines (208) are provided with first check valves (211).

5. An adjustable row unit gang according to claim 4 wherein, One end of the two groups of first pipelines (208) is penetrated through one side of the two groups of protective frames, one side of the first pipelines (208) is communicated with movable sleeves (209), and the movable sleeves (209) are fixedly installed in the protective frames.

6. An adjustable row unit gang according to claim 5, wherein, The rotary cultivator roller (201) is penetrated through the inside of the rotary cultivator (1) and the other side of the protective frame at both ends, and the rotary cultivator roller (201) is communicated with the two groups of movable sleeves (209) at both ends, the two groups of movable sleeves (209) are each provided with a first groove, and the rotary cultivator roller (201) is provided with convex rings sliding in the two groups of first grooves at both ends.

7. The self-opening adjustable row-crop unit of claim 1, wherein: Each group of the telescopic cylinder (304) is communicated with a three-way hose (305), one end of the three-way hose (305) is communicated with one side of the piston pipe (207), a second one-way valve (306) is arranged at the communicated position of the three-way hose (305) and the piston pipe (207), a first electromagnetic valve (308) is arranged on the three-way hose (305), a first hose (310) is communicated with the three-way hose (305), one side of the first hose (310) is communicated with the piston pipe (207), a second electromagnetic valve (309) is arranged on the first hose (310), and a vent hole is arranged on the piston pipe (207).

8. The self-opening adjustable row-crop unit of claim 1, wherein, Each group of the threaded sleeve (303) is connected with each group of the first reciprocating screw rod (203) through a ball nut pair, two groups of second grooves are arranged on the rotary cultivator (1), and the protrusions (307) on one side of the two groups of telescopic supports (301) slide in the two groups of second grooves.

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