Multifunctional agricultural comprehensive facility

Abstract

The invention discloses a multifunctional agricultural comprehensive facility which comprises a seeding vehicle used for rapid seeding in agricultural planting, a seeding frame is arranged on the rear side of the seeding vehicle, a weeding rake is arranged in the middle of the front side of the seeding vehicle, a pressing roller is arranged on the rear side of the seeding frame, and a ditching adjusting assembly is arranged at the bottom end of the seeding frame. The height of the furrowing piece is adjusted through the lifting piece, flexible adjustment of the furrowing depth is achieved, and the requirements of different crops for the seeding depth are met; through cooperation of the bidirectional lead screw, the threaded block and the gear assembly, the included angle of the ditching piece and the telescopic state of the extending shovel wing can be changed, so that the ditching angle and size are adjusted, the soil preparation and ditching requirements of different lands are met, and the problems that a traditional device is fixed in ditching gear and narrow in adaptability are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to agricultural devices, in particular to a multifunctional agricultural comprehensive facility, belonging to the technical field of agricultural machinery. BACKGROUND

[0002] With the increasing application of agricultural machinery in agriculture, seeding machines are increasingly involved in the process of crop cultivation.

[0003] Through retrieval, Chinese patent No. CN110495289A discloses a multifunctional integrated seeding machine, which can simultaneously seed and fertilize to improve seeding operation efficiency. However, the furrow opening device of the above-mentioned patent product realizes depth adjustment by embedding the front positioning block on the furrow opening rod into the first and second front positioning grooves of the front limiting tube. However, only two fixed gears are provided, which cannot meet the fine requirements of different crops or complex soil on furrow opening depth, and the adaptability is narrow. SUMMARY

[0004] The purpose of the present application is to provide a multifunctional agricultural comprehensive facility to solve the above problems.

[0005] The present application achieves the above-mentioned purpose through the following technical solutions: a multifunctional agricultural comprehensive facility, comprising a seeding vehicle for rapid seeding in agricultural planting, a seeding frame is arranged at the rear side of the seeding vehicle, a weeding spike harrow is arranged at the front side of the seeding vehicle, a pressing roller is arranged at the rear side of the seeding frame, and a furrow opening adjusting assembly is arranged at the bottom end of the seeding frame. The furrow opening adjusting assembly mainly comprises a furrow opening piece, a lifting piece and an adjusting piece. The lifting piece is located at the top end of the furrow opening piece, and the height position of the furrow opening piece and the adjusting piece is adjusted by driving and lifting the lifting piece. The furrow opening piece is located at the bottom end of the seeding frame, and the furrow opening piece is triangularly arranged, with the triangular sharp corner end facing the seeding vehicle. The adjusting piece mainly comprises a connecting rod, a threaded block, an extension shovel, a bidirectional screw rod and a gear assembly. The inside of the furrow opening piece away from the triangular sharp corner end is provided with an extension shovel wing. The bottom end of the lifting piece is provided with a connecting rod, and the connecting rod is internally provided with a bidirectional screw rod. Threaded blocks are arranged between the top ends of the two sides of the furrow opening piece and the bidirectional screw rod. A gear assembly is arranged between the inside of the threaded block and the extension shovel wing. The gear assembly comprises two gear plates and a rotating rod. The two gear plates of the gear assembly are respectively engaged with the inner wall of the connecting rod and the extension shovel wing. When the two threaded blocks are away from each other on the bidirectional screw rod, the included angle of the furrow opening piece increases, and the extension shovel wing extends. When the two threaded blocks are close to each other on the bidirectional screw rod, the included angle of the furrow opening piece decreases, and the extension shovel wing retracts into the furrow opening piece, thereby adjusting the angle and size of the furrow opening piece and adapting to different land preparation and furrow opening requirements.

[0006] Preferably, the lifting member is mainly composed of a cross bar, a telescopic cylinder, a lower pressure block, and an extension rod. A cross bar is provided at the bottom end of the sowing frame close to one end of the sowing vehicle, and a telescopic cylinder is provided on the cross bar. The execution end of the telescopic cylinder is connected to a lower pressure block, and extension rods are provided on both sides of the lower pressure block close to one end of the sowing vehicle. Movable grooves are provided at the top ends of the two extension rods, and a blocking block is provided between the two movable grooves.

[0007] Preferably, the cross sections of the movable groove and both ends of the clamping block are both in a "T" shape.

[0008] Preferably, a central axis is provided at the middle bottom end of the block, a shovel tip is provided at the end of the central axis close to the seeding vehicle, the trenching member is arranged at the end of the central axis away from the shovel tip, the trenching member is composed of two trenching shovel blades, the trenching shovel blades are hinged to the central axis, and the extended shovel wings are located inside the trenching shovel blades.

[0009] Preferably, a serrated bar is provided on the inner wall of the connecting rod, and a gear bar is provided in the middle of the top end of the extended shovel wing.

[0010] Preferably, a plurality of groups of sowing parts are provided at the top of the sowing frame, and the sowing parts are composed of a seed storage box and a fertilizer storage box. The seed storage box is arranged on a side close to the sowing vehicle, and the seed storage box and the fertilizer storage box are welded. A quantitative sowing assembly is provided at the bottom end of the seed storage box and the fertilizer storage box.

[0011] Preferably, the quantitative sowing component is used to adjust the feeding amount of the seed storage box and the fertilizer storage box, a driving motor is provided on one side of the bottom end of the sowing frame, the execution end of the driving motor is connected to a rotating rod, the rotating rod is provided with a first gear plate near the seed storage box, a second gear plate is provided on one side of the fertilizer storage box, a transmission rod is provided in the middle of the second gear plate, and a transmission chain is provided on the outer shell of the first gear plate and the second gear plate.

[0012] Preferably, the rotating rod and the conveying rod are both provided with a quantitative disk in the middle of the bottom end of the seed storage box and the fertilizer storage box.

[0013] Preferably, a covering shovel is provided at the bottom end of the sowing frame, and the covering shovel is located at the end of the furrowing member away from the sowing vehicle. The covering shovel is arranged in the shape of two discs, and the two discs of the covering shovel are arranged at an angle away from the end of the furrowing member.

[0014] Preferably, a pressing roller is provided on the rear side of the sowing frame, and the length of the pressing roller is consistent with the length of the weeding rake.

[0015] The present invention has the following beneficial effects: The ditching adjusting assembly can adjust the height of the ditching piece through the lifting piece, flexibly adjust the ditching depth, meet the demand of different crops on the seeding depth, and change the angle of the ditching piece and the extension state of the extension shovel wing through the cooperation of the bidirectional screw rod, the threaded block and the gear assembly, so that the ditching angle and size are adjusted, the land preparation and ditching demand of different lands are adapted, and the problems of the fixed ditching gear of the traditional device and the narrow adaptability are solved. The seeding vehicle integrates multiple functions such as weeding, ditching, seeding, fertilizing, covering and pressing, can complete multiple operations in one operation process, reduces the number of equipment round trips and operation links, and greatly improves the overall efficiency of agricultural planting. The quantitative seeding assembly can accurately adjust the discharging amount of seeds and fertilizers through the cooperation of the driving motor, the gear disc, the conveying chain and the quantitative disc, ensures the uniformity of seeding and fertilizing, avoids resource waste, and improves the seeding quality. The weeding spike harrow can remove the straw and weeds on the ground before seeding, prevent the ditching piece from being wound, ensure the smooth progress of the ditching operation, the height of the weeding spike harrow can be adjusted through the cylinder, different ground conditions are adapted, the land after covering can be flattened and pressed by the pressing roller, the length of the pressing roller is consistent with that of the weeding spike harrow, the operation effect is ensured, the pressing roller can be removed according to the demand, and different seeding and covering requirements can be adapted. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A multifunctional agricultural comprehensive facility overall structure perspective view is provided for the present application. Figure 2 A seeding frame and a pressing roller structure perspective view of a multifunctional agricultural comprehensive facility is provided for the present application. Figure 3 A seeding frame structure perspective view of a multifunctional agricultural comprehensive facility is provided for the present application. Figure 4 A quantitative seeding assembly structure perspective view of a multifunctional agricultural comprehensive facility is provided for the present application. Figure 5 A quantitative seeding assembly structure perspective view of a multifunctional agricultural comprehensive facility is provided for the present application. Figure 6 A quantitative seeding assembly structure perspective view of a multifunctional agricultural comprehensive facility is provided for the present application. Figure 7 A Figure 6 A structure enlarged view at A; Figure 8 A ditching adjusting assembly structure schematic view of a multifunctional agricultural comprehensive facility is provided for the present application. Figure 9 A ditching adjusting assembly structure perspective view of a multifunctional agricultural comprehensive facility is provided for the present application. Figure 10A multifunctional agricultural comprehensive facility ditching adjusting assembly structure perspective view is proposed for the present application. Figure 11 Figure 10 The structure enlarged view at B.

[0017] In the figure: 1, seeding vehicle; 2, connecting frame; 3, weeding spike harrow; 301, air cylinder; 4, seeding frame; 401, seed storage box; 402, fertilizer storage box; 5, quantitative seeding assembly; 501, driving motor; 502, rotating rod; 503, first gear plate; 504, conveying chain; 505, second gear plate; 506, conveying rod; 507, quantitative disc; 6, seeding drop cylinder; 601, fertilizer drop cylinder; 7, covering shovel; 701, pressing roller; 8, ditching adjusting assembly; 801, support; 802, cross rod; 803, telescopic cylinder; 804, pressing block; 805, extension rod; 806, movable groove; 807, clamping block; 808, middle shaft; 809, ditching blade; 810, blade tip; 811, connecting rod; 812, moving groove; 813, execution motor; 814, bidirectional screw rod; 815, threaded block; 816, connecting block; 817, gear strip; 818, third gear plate; 819, rotating rod; 820, fourth gear plate; 821, extended shovel wing; 822, sawtooth strip. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Embodiment one:

[0019] Reference Figures 1-11 A multifunctional agricultural comprehensive facility, including a seeding vehicle 1 used for rapid seeding in agricultural planting, the rear side of the seeding vehicle 1 is provided with a seeding frame 4, the front side of the seeding vehicle 1 is provided with a weeding spike harrow 3 in the middle, the rear side of the seeding frame 4 is provided with a pressing roller 701, and the bottom end of the seeding frame 4 is provided with a ditching adjusting assembly 8. The ditching adjusting assembly 8 is mainly composed of a ditching part, a lifting part and an adjusting part. The lifting part is located at the top end of the ditching part, and the lifting part is driven to lift to realize the height position adjustment of the ditching part and the adjusting part. The ditching part is located at the bottom end of the seeding frame 4, and the ditching part is triangularly arranged, with the triangular pointed end facing the seeding vehicle 1. The adjusting part is mainly composed of a connecting rod 811, a threaded block 815, an extension shovel, a two-way screw rod 814, and a gear assembly. The ditching part is provided with an extension shovel wing 821 inside the triangular tip end. The bottom end of the lifting part is provided with a connecting rod 811, and a two-way screw rod 814 is provided inside the connecting rod 811. Threaded blocks 815 are provided between the top ends of both sides of the ditching part and the two-way screw rod 814. A gear assembly is provided between the inside of the threaded block 815 and the extension shovel wing 821. The gear assembly consists of two gear plates and a rotating rod 819. The two gear plates of the gear assembly are respectively engaged with the inner wall of the connecting rod 811 and the extension shovel wing 821. When the two threaded blocks 815 move away from each other on the bidirectional screw rod 814, the angle of the trenching piece increases and the extended shovel wings 821 extend; when the two threaded blocks 815 move closer to each other on the bidirectional screw rod 814, the angle of the trenching piece decreases and the extended shovel wings 821 retract into the trenching piece, thereby adjusting the angle and size of the trenching piece to meet different land preparation and trenching requirements.

[0020] The lifting parts are mainly composed of a cross bar 802, a telescopic cylinder 803, a lower pressure block 804, and an extension rod 805. A cross bar 802 is provided at the bottom end of the sowing frame 4 close to the end of the sowing vehicle 1, and a telescopic cylinder 803 is provided on the cross bar 802. The execution end of the telescopic cylinder 803 is connected to the lower pressure block 804. Extension rods 805 are provided on both sides of the end of the lower pressure block 804 close to the end of the sowing vehicle 1. A movable groove 806 is provided at the top of the two extension rods 805, and a block 807 is provided between the two movable grooves 806. The cross sections of the movable groove 806 and the two ends of the block 807 are both "T" shaped.

[0021] A central axis 808 is provided at the middle bottom end of the block 807, and a shovel tip 810 is provided at the end of the central axis 808 close to the seeding vehicle 1. The furrowing part is provided at the end of the central axis 808 away from the shovel tip 810. The furrowing part is composed of two furrowing shovel blades 809. The furrowing shovel blades 809 are hinged to the central axis 808, and the extended shovel wings 821 are located inside the furrowing shovel blades 809. A serrated bar 822 is provided on the inner wall of the connecting rod 811, and a gear bar 817 is provided in the middle of the top of the extended shovel wing 821.

[0022] In this embodiment, it should be noted that: when sowing seeds in agricultural cultivation, especially when sowing on a large area of ​​land, manual sowing efficiency is slow, and a sowing vehicle 1 is often used. The sowing vehicle 1 is started by a person sitting in the driver's seat in front of the sowing vehicle 1, and seeds are sown along the road in the farmland.

[0023] like Figure 1 As shown, the seeding vehicle 1 has two smaller wheels on the front side and two larger wheels on both sides of the driver's seat, adopting a "small front and large rear" wheel design. The front wheels can easily control the direction when turning and turning in the farmland, and the large rear wheels can enhance the load-bearing and stability.

[0024] The herbicide peg rake 3 is arranged between the two wheels, and the top end of the herbicide peg rake 3 is arranged with a cylinder 301 between the bottom end of the driver seat. The cylinder 301 is started according to actual needs, so that the herbicide peg rake 3 is close to or away from the farmland. When the herbicide peg rake 3 contacts the ground, the straw and weeds on the ground can be treated and intercepted and removed in advance before sowing, so as to avoid the subsequent furrow cutting blade 809 from being entangled by weeds when contacting the ground for furrowing.

[0025] According to the needs of the planted seeds for the furrowing depth and width, the furrowing part, i.e. the furrowing blade 809, can be adjusted in advance. By default, the telescopic cylinder 803 is retracted, and at this time, the bottom end of the furrowing blade 809 does not contact the ground. When the driver sowing vehicle 1 reaches the designated position of the farmland, the furrowing blade 809 is adjusted through the control panel at the position of the driver seat according to actual needs and the soil condition of the land.

[0026] As shown in Figures 6-11 , the telescopic cylinder 803 is started to drive the lower block 804 connected to the execution end to be pressed down, i.e. to drive the connection rod 811 and the furrowing blade 809 at the bottom end to be lifted and lowered, so as to adjust the depth of entering the soil.

[0027] If not only the depth of entering the soil is required, but also the width of the furrow is required, the execution motor 813 at one end of the connection rod 811 is started. The execution motor 813 is connected with the bidirectional screw rod 814, the connection rod 811 is connected with multiple groups of sowing parts, the bidirectional screw rod 814 is distributed in a nodal manner at the bottom end of the multiple sowing parts, and each sowing part has a bidirectional screw rod 814 at the bottom end. Therefore, when the execution motor 813 is started to drive the bidirectional screw rod 814 to rotate, the two threaded blocks 815 connected with the nut of the bidirectional screw rod 814 drive the two side blades of the furrowing blade 809 to approach or move away from each other.

[0028] The top end of the threaded block 815 is provided with a third gear plate 818, and the bottom end of the threaded block 815 is provided with a connecting block 816 at the connection position with the furrowing blade 809. The connecting block 816 is fixedly connected with the threaded block 815, and the connection position between the connecting block 816 and the furrowing blade 809 is a rotating clamping. Therefore, the furrowing blade 809 can rotate left and right on the connecting block 816, and the rotating angle is between 30-120°.

[0029] The connecting block 816 is provided with a fourth gear plate 820, and the third gear plate 818 and the fourth gear plate 820 are provided with a rotating rod 819 therebetween.

[0030] As shown in Figure 11As shown, the end of the extension blade 821 inside the trenching blade 809, and the extension blade 821 can be moved back and forth on the trenching blade 809, the end of the extension blade 821 inside is provided with a limit block, so that the extension blade 821 can not be completely extracted from the trenching blade 809, the extension blade 821 is located inside the middle of the trenching blade 809 is provided with a gear strip 817, the top end of the connecting rod 811 is provided with a sawtooth strip 822, the upper and lower ends of the rotating rod 819 are connected with the threaded block 815 and the connecting block 816, and the gear side of one side of the third gear disc 818 and the fourth gear disc 820 is located outside the threaded block 815 and the connecting block 816, and the third gear disc 818 is engaged with the sawtooth strip 822, and the fourth gear disc 820 is engaged with the gear strip 817, and the bottom end of the connecting rod 811 is provided with a moving groove 812, and the bottom end of the threaded block 815 moves in the moving groove 812.

[0031] When the bidirectional screw rod 814 rotates, the two threaded blocks 815 move away from each other, the third bevel gear 818 engages the sawtooth strip 822 to start rotating, thereby driving the rotating rod 819 and the fourth gear disc 820 to rotate, and the fourth gear disc 820 drives the gear strip 817, i.e. the extension blade 821, to extend out of the trenching blade 809, thereby lengthening the length of the two sides of the trenching blade 809. At this time, the clamping block 807 moves in the movable groove 806 and approaches the pressing block 804, so that the default angle of the trenching blade 809 increases, and a wider trench can be opened during trenching; similarly, when the two threaded blocks 815 move closer to each other, the angle of the trenching blade 809 decreases, and at the same time the extension blade 821 is withdrawn into the trenching blade 809, thereby adjusting the width of the trench.

[0032] As shown in Figure 9 , the blade tip 810 is separately arranged on one side of the middle shaft 808, and the connection between the blade tip 810 and the middle shaft 808 is staggered with the engagement connection between the trenching blade 809 and the middle shaft, that is, the position of the blade tip 810 is stabilized without affecting the adjustment of the angle of the trenching blade 809. Example two:

[0033] Different from example one, referring to Figures 1-6 , the embodiment further has the following further contents: the top end of the seeding frame 4 is provided with a plurality of groups of seeding pieces, which are composed of a seed storage box 401 and a fertilizer storage box 402. The seed storage box 401 is arranged on one side close to the seeding vehicle 1, and the seed storage box 401 and the fertilizer storage box 402 are welded. The bottom end of the seed storage box 401 and the fertilizer storage box 402 is provided with a quantitative seeding assembly 5.

[0034] The quantitative sowing component 5 is used to adjust the feeding amount of the seed storage box 401 and the fertilizer storage box 402. A driving motor 501 is provided on one side of the bottom end of the sowing frame 4. The execution end of the driving motor 501 is connected to a rotating rod 502. The rotating rod 502 is provided with a first gear plate 503 near the seed storage box 401, and a second gear plate 505 is provided on one side of the fertilizer storage box 402. A transmission rod 506 is provided in the middle of the second gear plate 505, and a transmission chain 504 is provided on the outer cover of the first gear plate 503 and the second gear plate 505.

[0035] The rotating rod 502 and the conveying rod 506 are located in the middle of the bottom end of the seed storage box 401 and the fertilizer storage box 402, and a quantitative disk 507 is provided.

[0036] In this embodiment, it should be noted that the sowing component is composed of a seed storage box 401 and a fertilizer storage box 402, and a top cover is provided above the sowing component, which can be opened by a handle on the top cover to protect the seeds and fertilizers inside.

[0037] like Figures 4-5 As shown, after the sowing vehicle 1 moves to the designated position, the speed of the quantitative sowing component 5 is adjusted through the control panel on the driver's seat according to the planting properties of the seeds and the number of interval sowing, that is, the speed of the driving motor 501 is adjusted. When the driving motor 501 is started, it drives the rotating rod 502 to rotate. At this time, the quantitative disk 507 connected to the rotating rod 502 is located at the bottom end of the seed storage box 401 to sow the seeds. At the same time, when the rotating rod 502 rotates, the first gear disk 503 rotates, and then drives the transmission chain 504 and the second gear disk 505 to rotate. At this time, the transmission rod 506 fixedly connected to the second gear disk 505 rotates, driving the quantitative disk 507 located at the bottom end of the fertilizer storage box 402 to rotate, thereby realizing quantitative dispensing of seeds and fertilizers. Example 3:

[0038] Reference Figures 3-6 Compared with the first and second embodiments, in this embodiment: a covering shovel 7 is provided at the bottom end of the sowing frame 4, and the covering shovel 7 is located at the end of the furrowing member away from the sowing vehicle 1. The covering shovel 7 is arranged in the shape of two discs, and the two discs of the covering shovel 7 are arranged at an angle away from the end of the furrowing member.

[0039] A pressing roller 701 is provided at the rear side of the sowing frame 4 , and the length of the pressing roller 701 is consistent with that of the weeding rake 3 .

[0040] In this embodiment, it should be noted that a connecting frame 2 is provided between the seeding vehicle 1 and the seeding frame 4 to facilitate replacement and maintenance.

[0041] Rollers are provided at the front and back of the bottom of the sowing frame 4 to provide stable support for the sowing frame 4 and the furrowing shovel 809. A covering shovel 7 is provided at the rear end of the roller. When the furrowing shovel 809 opens the furrow and the sowing parts unload the seeds and fertilize, the covering shovel 7 pushes the soil on both sides toward the inside of the furrow and covers the seeds with soil. The pressing roller 701 located at the rear end of the sowing vehicle 1 performs a second pressing on the land after covering to make the land level.

[0042] The two sides of the pressing roller 701 are fixedly connected to the rear support rods of the seeding vehicle 1 by screws, and can be removed according to actual needs. If the planted seeds only need to be covered with soil and do not need to be suppressed, they can be removed. The pressing roller 701 can adapt to different sowing and covering requirements.

[0043] The bottom end of the sowing frame 4 is provided with an inclined bracket 801, one side of the bracket 801 is connected to the cross bar 802 of the furrowing adjustment assembly 8, and the other side is provided with a spring damper between the bottom end of the sowing frame 4 to provide a certain buffer for vibrations, impacts and soil resistance that may occur during the sowing process. At the same time, in moist soil, soil may adhere to the bottom end of the sowing frame 4. The slight elastic vibration naturally generated by the spring damper as the vehicle travels can drive the bottom end of the sowing frame 4 to shake slightly, which helps to shake off the adhered soil, keep the seed discharge port and furrow opener clean, and ensure smooth discharge of seeds.

[0044] The cylinder 301, the drive motor 501 and the execution motor 813 are all connected to a PLC controller of model "S7-1200".

Claims

1. A multifunctional agricultural complex, comprising a sowing vehicle for rapid sowing in agricultural planting, characterized in that: A sowing frame is provided at the rear side of the sowing vehicle, a weeding rake is provided in the middle of the front side of the sowing vehicle, a pressing roller is provided at the rear side of the sowing frame, and a furrowing adjustment component is provided at the bottom end of the sowing frame; The furrowing adjustment assembly is mainly composed of a furrowing member, a lifting member and an adjusting member. The lifting member is located at the top of the furrowing member. The height position of the furrowing member and the adjusting member is adjusted by driving the lifting member to rise and fall. The furrowing member is located at the bottom end of the sowing frame. The furrowing member is triangular in shape, and the triangular tip of the furrowing member faces the sowing vehicle. The adjusting member is mainly composed of a connecting rod, a threaded block, an extension shovel, a bidirectional screw rod, and a gear assembly. The ditching member is provided with an extension shovel wing inside the end away from the triangular tip. The bottom end of the lifting member is provided with a connecting rod, and a bidirectional screw rod is provided in the connecting rod. A threaded block is provided between the top ends of both sides of the ditching member and the bidirectional screw rod, and a gear assembly is provided between the inside of the threaded block and the extension shovel wing. The gear assembly consists of two gear plates and a rotating rod. The two gear plates of the gear assembly are respectively engaged with the inner wall of the connecting rod and the extension shovel wing. When the two threaded blocks move away from each other on the bidirectional screw rod, the angle of the trenching piece increases and the extended shovel wings extend; when the two threaded blocks move closer to each other on the bidirectional screw rod, the angle of the trenching piece decreases and the extended shovel wings retract into the trenching piece, thereby realizing the adjustment of the angle and size of the trenching piece to meet the trenching needs of different land preparation.

2. A multifunctional agricultural complex according to claim 1, characterized in that: The lifting part is mainly composed of a cross bar, a telescopic cylinder, a lower pressure block, and an extension rod. A cross bar is provided at the bottom end of the sowing frame close to one end of the sowing vehicle, and a telescopic cylinder is provided on the cross bar. The execution end of the telescopic cylinder is connected to the lower pressure block, and extension rods are provided on both sides of the lower pressure block close to one end of the sowing vehicle. The top ends of the two extension rods are provided with movable grooves, and a blocking block is provided between the two movable grooves.

3. The multifunctional agricultural complex according to claim 2, characterized in that: The cross sections of the movable groove and both ends of the clamping block are both arranged in a "T" shape.

4. The multifunctional agricultural complex according to claim 3, characterized in that: A central axis is provided at the middle bottom end of the block, a shovel tip is provided at the end of the central axis close to the seeding vehicle, the trenching member is arranged at the end of the central axis away from the shovel tip, the trenching member is composed of two trenching blades, the trenching blades are hinged to the central axis, and the extended shovel wings are located inside the trenching blades.

5. The multifunctional agricultural complex according to claim 4, characterized in that: A sawtooth bar is provided on the inner wall of the connecting rod, and a gear bar is provided in the middle of the top end of the extending shovel wing.

6. The multifunctional agricultural complex according to claim 1, characterized in that: The top of the sowing frame is provided with multiple groups of sowing parts, which are composed of a seed storage box and a fertilizer storage box. The seed storage box is arranged on a side close to the sowing vehicle. The seed storage box and the fertilizer storage box are welded. The bottom ends of the seed storage box and the fertilizer storage box are provided with quantitative sowing components.

7. The multifunctional agricultural complex according to claim 6, characterized in that: The quantitative sowing component is used to adjust the feeding amount of the seed storage box and the fertilizer storage box. A driving motor is provided on one side of the bottom end of the sowing frame. The execution end of the driving motor is connected to a rotating rod. The rotating rod is provided with a first gear plate near the seed storage box, and a second gear plate is provided on one side of the fertilizer storage box. A transmission rod is provided in the middle of the second gear plate, and a transmission chain is provided on the outer shells of the first gear plate and the second gear plate.

8. The multifunctional agricultural complex according to claim 7, characterized in that: The rotating rod and the conveying rod are both provided with quantitative disks in the middle of the bottom ends of the seed storage box and the fertilizer storage box.

9. The multifunctional agricultural complex according to claim 8, characterized in that: A covering shovel is provided at the bottom end of the sowing frame. The covering shovel is located at the end of the furrowing member away from the sowing vehicle. The covering shovel is arranged in the shape of two discs, and the two discs of the covering shovel are arranged at an angle away from the end of the furrowing member.

10. The multifunctional agricultural complex according to claim 9, characterized in that: A pressing roller is provided at the rear side of the sowing frame, and the length of the pressing roller is consistent with the length of the weeding rake.

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