Multifunctional combined seeding operation machine

Abstract

The utility model discloses a multifunctional combined seeding operation machine, and belongs to the field of agricultural machinery. The operation machine comprises a stubble cutting device, a stubble shifting device, a ditching device, a soil covering device, a pressing device, a seeding device and a walking device. The stubble cutting device is arranged at the foremost end of the rack, is used for cutting off straws and weeds on the earth surface, comprises a bionic straw cleaning hob and a stubble cutting disc cutter, and is fixed through a connecting bracket; the stubble shifting device is located at the lower end of the machine frame and connected with the motor through a rotating shaft, and shifting claws with different lengths are alternately installed on a grass shifting wheel axle so that the more uniform grass shifting and stubble shifting effect can be achieved. The furrowing device is a double-disc furrow opener and is arranged behind the stubble shifting device through a connecting beam; the soil covering device comprises a soil covering wheel which is arranged behind the furrow opener through a connecting beam; the pressing device comprises a pressing wheel and a cleaning and soil scraping brush and is arranged behind the soil covering device through a connecting frame. During operation, stubble breaking, stubble shifting, ditching, seeding, soil covering and pressing procedures can be completed at a time, and the seeding quality requirement on the ground surface covered with straw is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of agricultural machinery, and concretely relates to a multifunctional combined seeding operation machine. BACKGROUND

[0002] With the development of mechanized planting, seeding machines are widely used in the field of agricultural planting. With the development in recent years, more and more agricultural machinery tends to diversification, and the development direction is multifunctional. The past seeding machines mostly adopt single function agricultural machinery, and the functions are relatively few. The operation task is complicated, and it needs to be completed through multiple operations such as breaking stubble, ditching, seeding, covering soil, and pressing. In the field of agricultural development, more agricultural machinery equipment needs to be optimized and improved on the basis of these many process flows, so as to make it more intelligent, diversified, and high-efficiency, and solve the defects of low work efficiency and insufficient functions of traditional agricultural machinery. SUMMARY

[0003] In view of the above problems, the utility model provides a multifunctional combined seeding operation machine. The combined operation machine can complete the work of breaking stubble, breaking up stubble, ditching, seeding, covering soil, and pressing at one time, and can greatly improve the work efficiency of agricultural machinery operation.

[0004] The multifunctional combined seeding machine is characterized in that the combined machine can complete the work of stubble breaking, stubble picking, ditching, seeding, soil covering and pressing in one time; the combined machine comprises a stubble breaking device, a stubble picking device, a ditching device, a soil covering device, a pressing device, a seeding device and a walking device; the main working components comprise a bionic straw cleaning cutter (1), a stubble breaking disc cutter (2), a fastening support (3), a connecting support (4), a picking claw (5), a depth limiting wheel (6), an adjustable spring support (7), a double-disc ditcher (8), a blocking plate (9), a hydraulic telescopic rod (10), a walking wheel (11), an adjustable telescopic spring (12), a soil covering wheel (13), an adjustable telescopic rod (14), a pressing wheel (15), a synchronous adjustable connecting support (16), a cleaning and soil scraping brush (17), a motor 1 (18), a transmission belt device (19), a seed box (20), a nest wheel seed metering device (21), a motor 2 (22), a machine frame (23) and a traction machine frame (24); the most front end of the multifunctional combined seeding machine is provided with the traction machine frame (24), the both ends of the machine frame (23) are provided with the depth limiting wheels (6); the front end of the machine frame (23) is provided with the bionic straw cleaning cutter (1), the stubble breaking disc cutter (2) and the fastening support (3), which are connected to the machine frame (23) through the connecting support (4); the stubble picking device is located at the lower end of the machine frame (23) and is connected to the motor 2 (22) through a rotating shaft (38); the double-disc ditcher (8) is connected to the lower end of the machine frame (23) and is located behind the stubble picking device through a ditcher connecting beam (26); the soil covering device is connected to the lower end of the machine frame (23) and is located directly behind the double-disc ditcher (8) through a soil covering wheel connecting beam (29); the pressing wheel (15) is connected to the machine frame (23) through a pressing wheel connecting frame (31) and is located behind the soil covering wheel (13); the walking wheel (11) is connected to the machine frame (23) at a position offset to the rear through a walking wheel connecting frame (28) and a hydraulic telescopic rod (10); the upper end of the machine frame (23) is provided with the seed box (20) and the nest wheel seed metering device (21), the lower end of the nest wheel seed metering device (21) is provided with a seed guiding pipe (27), and the transmission belt device (19) and the motor 1 (18) are connected through a belt transmission to realize the normal work of the seed metering device.

[0005] The stubble breaking device comprises a bionic straw cleaning rolling cutter (1), a stubble breaking disc cutter (2), a fastening support (3), a connecting support (4), a rolling cutter (36) and a fastening screw (37). The stubble breaking disc cutter (2) breaks and cuts the stubble on the advancing path. The bionic straw cleaning rolling cutter (1) is designed by adopting the structure of the mantis arm body surface, and can not only clean the straw, but also break the stubble. The rolling cutter (36) is designed by adopting the barb structure of the mantis arm body surface, and has excellent grabbing capacity. During the working process, the stubble on the advancing path can be pressed, so that the stubble on the advancing path can avoid the stubble breaking disc cutter (2) due to the disturbance of the machine, and the stubble breaking disc cutter (2) can break and cut the straw. The stubble breaking disc cutter (2), the fastening support (3) and the connecting support (4) are connected together through the fastening screw (37). The bionic straw cleaning rolling cutter (1) is connected to the front end of the fastening support (3), and forms an angle with the stubble breaking disc cutter (2). The end of the connecting support (4) is fixed to the front end of the rack (23).

[0006] The stubble breaking device (25) comprises staggered pawls (5) and a rotating shaft (38). The rotating shaft (38) penetrates the rack (23) from below and is connected to the upper motor 2 (22) through the gear rotating mechanism (35). The rotating shaft (38) and the motor 2 (22) are connected together through the gear rotating mechanism (35). The gear rotating mechanism (35) is driven to rotate by the motor 2 (22), and then drives the rotating shaft (38) and the staggered pawls (5) to rotate, so as to perform the stubble breaking work and ensure the normal performance of the stubble breaking work.

[0007] The depth limiting wheel (6) comprises an adjustable spring support (7), a fixed connection shaft sleeve (53), a depth limiting wheel soil scraping plate (54), a rotating shaft sleeve (55) and a fastening connection plate rack (56). The depth limiting wheel (6) is connected to the adjustable spring support (7) through the rotating shaft sleeve (55). The adjustable spring support (7) and the fastening connection plate rack (56) are embedded into the fixed connection shaft sleeve (53) in series, and are fixedly connected to the rack (23) on both sides through the fastening base (32). The adjustable spring support (7) has a buffering effect on the depth limiting wheel (6) and increases the flexibility. At the same time, the flexibility of the adjustable spring support ensures the passability of the depth limiting wheel (6) during the working advancing process. The depth limiting wheel soil scraping plate (54) can scrape off the clay adhered to the surface of the tire of the depth limiting wheel (6) during the working process, so as to ensure the normal working of the depth limiting wheel (6).

[0008] The nest wheel seed metering device (21) comprises a seed box (20), a seed guiding pipe (27), a seed blocking brush (39), a seed protecting plate (40), a nest wheel (41), a seed outlet (42), an angular contact ball bearing 1 (43), a seed cleaning device (44), a partition plate (45), a seed bin bottom plate (46), an outer shell (47), a rotating shaft (48), a seed filling wheel (49), an angular contact ball bearing 2 (50), a seed guiding baffle (51) and an angular contact ball bearing 3 (52).

[0009] The soil covering device comprises an adjustable telescopic spring (12), a soil covering wheel (13), a connecting beam (29), a fixed support (30), a linking ring buckle (57) and a depth adjusting rod (58); the soil covering wheel (13) is connected to the fixed support (30) on both sides in a splay shape, the fixed support (30) is connected with the connecting beam (29), the connecting beam (29) is connected to the fixed base (33) below the machine frame (23), the adjustable telescopic spring (12) is connected between the bottom of the fixed base (33) and the linking ring buckle (57), and the soil covering depth of the soil covering wheel (13) is adjusted by the adjustable telescopic spring (12) and the depth adjusting rod (58) in the process of advancing soil covering.

[0010] The soil covering device comprises an adjustable telescopic spring (12), a soil covering wheel (13), a connecting beam (29), a fixed support (30), a linking ring buckle (57) and a depth adjusting rod (58); the soil covering wheel (13) is connected to the fixed support (30) on both sides in a splay shape, the fixed support (30) is connected with the connecting beam (29), the connecting beam (29) is connected to the fixed base (33) below the machine frame (23), the adjustable telescopic spring (12) is connected between the bottom of the fixed base (33) and the linking ring buckle (57), and the soil covering depth of the soil covering wheel (13) is adjusted by the adjustable telescopic spring (12) and the depth adjusting rod (58) in the process of advancing soil covering. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a whole machine schematic view of the multifunctional combined seeding machine.

[0012] Figure 2 It is a front view schematic view of the multifunctional combined seeding machine.

[0013] Figure 3 It is the whole machine rear view schematic view of the multifunctional combined seeding machine of the utility model;

[0014] Figure 4 It is the whole machine overhead structure diagram of the multifunctional combined seeding machine of the utility model;

[0015] Figure 5 It is the broken stubble device schematic view of the utility model;

[0016] Figure 6 It is the broken stubble device schematic view of the utility model;

[0017] Figure 7 It is the seeding device eyelet wheel seed metering device schematic view of the utility model;

[0018] Figure 8 It is the depth limiting wheel structure schematic view of the utility model;

[0019] Figure 9 It is the earthing device schematic view of the utility model;

[0020] Figure 10 It is the compacting device schematic view of the utility model;

[0021] Markings in the figure:

[0022] 1-bionic clean straw hob, 2-broken stubble disc cutter, 3-fastening support, 4-connection support, 5-broken claw, 6-depth limiting wheel, 7-adjustable spring support, 8-double disc opener, 9-baffle, 10-hydraulic telescopic rod, 11-traveling wheel, 12-adjustable telescopic spring, 13-earthing wheel, 14-adjustable telescopic rod, 15-compact wheel, 16-synchronous adjustable connection support, 17-clean scraping soil brush, 18-motor 1, 19-transmission belt device, 20-seed box, 21-eyelet wheel seed metering device, 22-motor 2, 23-rack, 24-drawing rack, 25-broken stubble device, 26-opener connecting beam, 27-seed guide tube, 28-traveling wheel connecting frame, 29-connection beam, 30-fixed support, 31-compact wheel connecting frame, 32-fastening base, 33-fixed base, 34-fixed bottom plate, 35-gear rotating mechanism, 36-hob, 37-fastening screw, 38-rotary shaft, 39-seed blocking brush, 40-seed protection plate, 41-eyelet wheel, 42-seed outlet, 43-angular contact ball bearing 1, 44-clean seed device, 45-baffle, 46-seed bin bottom plate, 47-outer shell, 48-rotary shaft, 49-seed filling wheel, 50-angular contact ball bearing 2, 51-seed guide baffle, 52-angular contact ball bearing 3, 53-fixed connection shaft sleeve, 54-depth limiting wheel scraping plate, 55-rotary shaft sleeve, 56-fastening connection plate frame, 57-linking ring buckle, 58-depth adjusting rod, 59-adjusting spring. Detailed Implementation

[0023] To further illustrate the embodiments of this utility model, the following is a description with accompanying drawings.

[0024] like Figures 1-4 As shown, a multi-functional combined seeding machine includes: a biomimetic straw-clearing roller (1), a stubble-breaking disc blade (2), a fastening bracket (3), a connecting bracket (4), a claw (5), a depth-limiting wheel (6), an adjustable spring bracket (7), a double-disc furrow opener (8), a baffle plate (9), a hydraulic telescopic rod (10), a walking wheel (11), an adjustable telescopic spring (12), a soil-covering wheel (13), an adjustable telescopic rod (14), a press wheel (15), a synchronously adjustable connecting bracket (16), a cleaning scraper brush (17), a motor (18), a transmission belt device (19), and a seed box (10). 20), Seed metering device (21), motor 2 (22), frame (23), traction frame (24), stubble removal device (25), furrow opener connecting beam (26), seed guide tube (27), walking wheel connecting frame (28), connecting beam (29), fixed bracket (30), press wheel connecting frame (31), fastening base (32), fixed base (33), fixed base plate (34), gear rotation mechanism (35); the traction frame (24) connects the frame (23) to the tractor, driving the entire implement forward, stubble breaking disc blade (2), fastening bracket (3) and connecting bracket (4) The three components are connected together by fastening screws (37). The bionic straw-clearing roller (1) is connected to the front end of the fastening bracket (3) at an angle to the stubble-breaking disc blade (2). The end of the connecting bracket (4) is fixed to the front end of the frame (23). The stubble-removing device is located at the lower end of the frame (23) and is connected to the motor 2 (22) through the rotating shaft (38). The double disc furrow opener (8) is connected to the lower end of the frame (23) through the furrow opener connecting beam (26) and is located directly behind the stubble-removing device. The soil-covering wheel (13) is connected to the lower end of the frame (23) through the soil-covering wheel connecting beam (29) and is located behind the double disc furrow opener (8). At the rear, the press wheel (15) is connected to the frame (23) through the press wheel connecting frame (31) and is located behind the soil covering wheel (13). The walking wheel (11) is connected to the hydraulic telescopic rod (10) through the walking wheel connecting frame (28) and is located on both sides of the frame (23) at a slightly rear position. The upper end of the frame (23) is provided with a seed box (20) and a seed metering device (21) with a seed hole wheel. The lower end of the seed metering device (21) is provided with a seed guide tube (27). The seed guide tube (27) passes through the frame (23). The transmission belt device (19) and the motor 1 (18) are connected by belt drive to realize the normal operation of the seed metering device.

[0025] Working principle: tractor is connected with connecting support (4), drag frame (23) advances, bionic straw cleaning cutter (1) on stubble breaking device is broken and cut by adopting bionic stubble breaking device designed by mantis arm body surface structure, the stubble on the advancing path, the knife pattern of the working part area of the hob (36) is designed by adopting the barb structure of the mantis arm body surface, so that it has excellent grabbing ability, not only can have pressing effect on the stubble on the advancing path in the working process, prevent the stubble on the advancing path from avoiding the stubble breaking disc cutter (2) due to the disturbance of the machine, motor 2 (22) transmits power to rotating shaft (38) through gear rotating mechanism (35) to break stubble, double disc opener (8) opens ditch when the machine advances, depth limiting wheel (6) limits the depth of the machine, the limiting of the depth limiting wheel is realized through the tension of the adjustable spring support (7), the seeds enter the seed guide pipe (27) through the eyelet wheel seed metering device (21) and finally enter the seed furrow opened by the double disc opener (8), the earth opened by the double disc opener (8) is backfilled by the earth covering wheel (13), the earth backfilled by the earth covering wheel (13) is compacted by the compacting wheel (15), the walking wheel (11) is retracted away from the ground through the walking wheel connecting frame (28) and the hydraulic telescopic rod (10) when the machine works into the ground.

[0026] As Figure 5 shown, it is a stubble breaking device schematic view of the utility model, the stubble breaking device, including: bionic straw cleaning cutter (1), stubble breaking disc cutter (2), fastening support (3), connecting support (4), hob (36), fastening screw (37); the stubble breaking disc cutter (2), fastening support (3) and connecting support (4) are connected together through fastening screw (37), bionic straw cleaning cutter (1) is connected at the front end of fastening support (3), and forms an angle with stubble breaking disc cutter (2), and the tail end of connecting support (4) is fixed to the front end of frame (23).

[0027] Working principle: first, bionic straw cleaning cutter (1) and stubble breaking disc cutter (2) break and cut the stubble on the advancing path, the knife pattern of the working part area of the hob (36) is bionically designed by adopting the barb structure of the mantis arm body surface, so that it has excellent grabbing ability, not only can have oblique pressing effect on the stubble on the advancing path in the working process, prevent the stubble on the advancing path from avoiding the stubble breaking disc cutter (2) due to the disturbance of the machine, and more help bionic straw cleaning cutter (1) and stubble breaking disc cutter (2) to break and cut the straw.

[0028] As Figure 6As shown in the figure, it is the schematic diagram of the stub device, the stub device (25) comprises: staggered claw (5), rotating shaft (38), through rotating shaft (38) from below and pass through rack (23) and by means of gear rotating mechanism (35) and the motor 2 (22) of upper connection, rotating shaft (38) and motor 2 (22) are connected together through gear rotating mechanism (35), through motor 2 (22) rotation drives gear rotating mechanism (35) rotation, in turn drives rotating shaft (38) and staggered claw (5) rotation to carry out stub work.

[0029] Working principle: the claw (5) of different length is alternately installed on rotating shaft (38), through motor 2 (22) rotation drives gear rotating mechanism (35) rotation, in turn drives rotating shaft (38) and staggered claw (5) rotation to carry out stub work.

[0030] As Figure 7 As shown in the figure, it is the schematic diagram of the stub device, the stub device (25) comprises: staggered claw (5), rotating shaft (38), through rotating shaft (38) from below and pass through rack (23) and by means of gear rotating mechanism (35) and the motor 2 (22) of upper connection, rotating shaft (38) and motor 2 (22) are connected together through gear rotating mechanism (35), through motor 2 (22) rotation drives gear rotating mechanism (35) rotation, in turn drives rotating shaft (38) and staggered claw (5) rotation to carry out stub work.

[0031] Working principle: its working process includes filling, carrying, protecting, cleaning, seed stage, first seed from seed box (20) into the seed chamber of the seed metering device, with the rotation of the eye wheel (41) and the filling wheel (49), the seed enters the eye wheel type hole, the rotation of the filling wheel (49) can prevent the accumulation of arch phenomenon, the edge end of the eye wheel (41) is designed as a gentle slope structure, which is more conducive to the sliding of the seed into the eye wheel (41) type hole, the seed brush (28) can sweep out the excess seed in the type hole to realize single precision seeding, the seed protection plate (40) can provide good protection for the seed during seeding, and also serves as a buffer for the seed to resist the centripetal force of the eye wheel (41) rotation, and can also ensure the passability of the seed metering device; the bottom end of the eye wheel (41) is attached with a seed cleaning device (44), which cleans the seed by embedding the embedded sheet in the gap track between the eye wheel, the sheet is embedded to an appropriate depth, and when the type hole rotates to contact the sheet, the seed is forced to be planted, the seed is discharged from the seed outlet (42) along the seed guide pipe (27) into the seed furrow, thereby avoiding the occurrence of overplanting and underplanting, and the operation finally realizes intermittent planting and precise planting.

[0032] As Figure 8 shown, it is the depth limiting wheel structure schematic diagram of the utility model, depth limiting wheel (6), including: adjustable spring support (7), fixed connection shaft sleeve (53), depth limiting wheel soil scraping plate (54), rotating shaft sleeve (55), fastening connection plate frame (56); depth limiting wheel (6) is connected with adjustable spring support (7) through rotating shaft sleeve (55), adjustable spring support (7) and fastening connection plate frame (56) are embedded in fixed connection shaft sleeve (53) in series, and are fixedly connected on both sides of rack (23) through fastening base (32).

[0033] Working principle: the depth limiting wheel (6) plays a role in depth limiting, the adjustable spring support (7) plays a role in buffering for the depth limiting wheel (6) and increases flexibility, meanwhile, the flexibility of the adjustable spring support ensures the passability of the depth limiting wheel (6) during working, and the depth limiting wheel soil scraping plate (54) can scrape off the clay adhered to the surface of the depth limiting wheel (6) during working, so as to ensure normal working of the depth limiting wheel (6).

[0034] As Figure 9 shown, it is the depth limiting wheel structure schematic diagram of the utility model, depth limiting wheel (6), including: adjustable spring support (7), fixed connection shaft sleeve (53), depth limiting wheel soil scraping plate (54), rotating shaft sleeve (55), fastening connection plate frame (56); depth limiting wheel (6) is connected with adjustable spring support (7) through rotating shaft sleeve (55), adjustable spring support (7) and fastening connection plate frame (56) are embedded in fixed connection shaft sleeve (53) in series, and are fixedly connected on both sides of rack (23) through fastening base (32).

[0035] Working principle: the soil covering wheel (13) fills the soil in the seed trench opened by the double-disk opener (8), and the depth of the soil covering wheel (13) is adjusted by means of the adjustable telescopic spring (12) and the depth adjusting rod (58) during the advancing and soil covering process.

[0036] As Figure 10 shown, it is a schematic diagram of the pressing device, the pressing device comprises: an adjustable telescopic rod (14), a pressing wheel (15), a synchronous adjustable connecting support (16), a cleaning soil scraping brush (17), a pressing wheel connecting frame (31), and an adjusting spring (59); the pressing wheel (15) and the pressing wheel connecting frame (31) are connected on the same rotating shaft, the synchronous adjustable connecting support (16) and the cleaning soil scraping brush (17) are connected on the same rotating shaft and located above the pressing wheel (15), the synchronous adjustable connecting support (16) and the pressing wheel connecting frame (31) are respectively connected with the rack (23) and can rotate at the connection to adjust the height of the pressing wheel (15), the upper end of the adjustable telescopic rod (14) is connected with the rack (23), and the lower end is connected to the terminal part of the pressing wheel connecting frame (31).

[0037] Working principle: after the ditching and soil covering operation is completed, the soil is compacted by the pressing action of the pressing wheel (15), the soil density and firmness are increased, the pressing wheel (15) is made of a semi-solid rubber wheel, the soil adhesion problem in the operation process can be reduced, and the stability of the pressing wheel operation is improved; the height of the pressing wheel (15) is adjusted by means of the extension and retraction of the adjusting spring (59) in the adjustable telescopic rod (14) and the rotation of the pressing wheel connecting frame (31), so that the soil density and firmness are ensured, the soil moisture content is protected, a suitable seedbed environment is created for seed germination and emergence, and the synchronous adjustable connecting support (16) can synchronously drive the cleaning soil scraping brush (17) to adjust the height to ensure contact with the pressing wheel (15), so that the adjustable and synchronous self-cleaning function of the pressing wheel is realized.

[0038] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

Claims

1. A multi-functional combination seeding machine characterized by: The multifunctional combined seeding machine comprises a stubble breaking device, a stubble poking device, a furrowing device, a covering device, a rolling device, a seeding device, a walking device, a bionic straw cleaning rolling cutter (1), a stubble breaking disc cutter (2), a fastening support (3), a connecting support (4), a poking claw (5), a depth limiting wheel (6), an adjustable spring support (7), a double disc furrowing device (8), a blocking plate (9), a hydraulic telescopic rod (10), a walking wheel (11), an adjustable telescopic spring (12), a covering wheel (13), an adjustable telescopic rod (14), a rolling wheel (15), a synchronously adjustable connecting support (16), a cleaning and scraping brush (17), a motor 1 (18), a transmission belt device (19), a seed box (20), a nest wheel seed metering device (21), a motor 2 (22), a frame (23), a traction frame (24), and main working components.

2. The multi-functional combined seeding machine according to claim 1, characterized in that: The multifunctional combined seeding machine comprises a stubble breaking device, a stubble poking device, a furrowing device, a covering device, a rolling device, a seeding device, a walking device, a bionic straw cleaning rolling cutter (1), a stubble breaking disc cutter (2), a fastening support (3), a connecting support (4), a poking claw (5), a depth limiting wheel (6), an adjustable spring support (7), a double disc furrowing device (8), a blocking plate (9), a hydraulic telescopic rod (10), a walking wheel (11), an adjustable telescopic spring (12), a covering wheel (13), an adjustable telescopic rod (14), a rolling wheel (15), a synchronously adjustable connecting support (16), a cleaning and scraping brush (17), a motor 1 (18), a transmission belt device (19), a seed box (20), a nest wheel seed metering device (21), a motor 2 (22), a frame (23), a traction frame (24), and main working components. The stubble breaking device comprises the bionic straw cleaning rolling cutter (1), the stubble breaking disc cutter (2), the fastening support (3), the connecting support (4), a rolling cutter (36), and a fastening screw (37). The stubble breaking disc cutter (2) breaks and cuts the stubble on the advancing path. The bionic straw cleaning rolling cutter (1) is designed based on the structure of a mantis arm body and can break the stubble. The rolling cutter (36) has an excellent grabbing capacity due to the barb structure of the mantis arm body, and can press the stubble on the advancing path to prevent the stubble from avoiding the stubble breaking disc cutter (2) due to disturbance of the machine. The stubble breaking disc cutter (2), the fastening support (3), and the connecting support (4) are connected together by the fastening screw (37). The bionic straw cleaning rolling cutter (1) is connected to the front end of the fastening support (3). The connecting support (4) is fixed to the front end of the frame (23).

3. The multi-functional combination seeding machine according to claim 1, characterized in that: The stubble device (25) comprises staggered claws (5) and a rotating shaft (38), the rotating shaft (38) penetrates through the frame (23) and is connected with the motor 2 (22), the rotating shaft (38) and the motor 2 (22) are connected together through a gear rotating mechanism (35), the gear rotating mechanism (35) is driven to rotate by the motor 2 (22), and then the rotating shaft (38) and the staggered claws (5) are driven to rotate, so that the stubble device works.

4. The multi-functional combination seeding machine of claim 1, wherein: The depth limiting wheel (6) comprises an adjustable spring support (7), a fixed connecting shaft sleeve (53), a depth limiting wheel soil scraping plate (54), a rotating shaft sleeve (55) and a fastening connecting plate frame (56); the depth limiting wheel (6) is connected with the adjustable spring support (7) through the rotating shaft sleeve (55), the adjustable spring support (7) and the fastening connecting plate frame (56) are embedded into the fixed connecting shaft sleeve (53) in series, and the fixed connecting shaft sleeve (53) is fixedly connected on both sides of the frame (23) through the fastening base (32).

5. The multi-functional combination seeding machine of claim 1, wherein: The nest wheel seed metering device (21) comprises a seed box (20), a seed guiding pipe (27), a seed blocking brush (39), a seed protecting plate (40), a nest wheel (41), a seed outlet (42), an angular contact ball bearing 1 (43), a seed cleaning device (44), a partition plate (45), a seed bin bottom plate (46), an outer shell (47), a rotating shaft (48), a seed filling wheel (49), an angular contact ball bearing 2 (50), a seed guiding baffle (51) and an angular contact ball bearing 3 (52); the outer shell (47) is fixed on the upper end of the frame (23) through bolts, and the nest wheel (41) is used for precise seed sowing.

6. The multi-functional combination seeding machine of claim 1, wherein: The covering device comprises adjustable telescopic springs (12), covering wheels (13), connecting beams (29), fixed supports (30), link ring buckles (57) and depth adjusting rods (58); the covering wheels (13) are connected on both sides of the fixed supports (30) in a figure-of-eight shape, the fixed supports (30) are connected with the connecting beams (29), the connecting beams (29) are connected with the fixed base (33) below the frame (23), and the adjustable telescopic springs (12) are connected between the bottom of the fixed base (33) and the link ring buckles (57).

7. The multi-functional combination seeding machine of claim 1, wherein: The rolling device comprises an adjustable telescopic rod (14), a rolling wheel (15), a synchronous adjustable connecting support (16), a cleaning soil scraping brush (17), a rolling wheel connecting frame (31) and an adjusting spring (59); the rolling wheel (15) and the rolling wheel connecting frame (31) are connected on the same rotating shaft, the synchronous adjustable connecting support (16) and the cleaning soil scraping brush (17) are connected on the same rotating shaft and located above the rolling wheel (15); the synchronous adjustable connecting support (16) and the rolling wheel connecting frame (31) are respectively connected with a machine frame (23) and can rotate at the connecting positions to adjust the height of the rolling wheel (15); the upper end of the adjustable telescopic rod (14) is connected with the machine frame (23), and the lower end is connected with the terminal part of the rolling wheel connecting frame (31); the height of the rolling wheel (15) is adjusted by the extension and retraction of the adjusting spring (59) in the adjustable telescopic rod (14) and the rotation of the rolling wheel connecting frame (31), and the synchronous adjustable connecting support (16) can synchronously drive the cleaning soil scraping brush (17) to adjust the height, so that the adjustable and synchronous self-cleaning function of the rolling wheel is realized.

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