CN110915325B - Straw returning shallow-pressure covered strip tiller - Google Patents

Abstract

A straw returning shallow-pressure covering strip tiller is used for realizing the operations of uniform straw cleaning and returning, strip rotary tillage, returning straw shallow-pressure fixing, rotary tillage strip, straw returning strip compacting and the like at one time, thereby realizing the agricultural requirements of straw returning shallow-pressure covering strip tillage. The adjustable soil retaining plate can realize the quantity that soil splashes in the strip rotary tillage to can adjust the condition that straw shallow pressure is fixed according to specific soil and wind-force condition. The main component return machine A comprises a main frame, a subsoiling shovel, a power transmission mechanism, a rotary tillage mechanism, a soil retaining plate, a depth limiting press roller, an auxiliary press roller, two straw cleaning mechanisms, two fixed plates, two movable plates, two press rollers, two linkage rods, two support plates, two nuts, two springs and two connecting pins. The invention can complete the work of straw cleaning, deep scarification, rotary tillage, straw shallow pressing coverage, soil compacting and straw compacting at one time.

Description

Straw returning shallow-pressure covered strip tiller

Technical Field

The invention relates to the field of agricultural machinery, in particular to a straw returning shallow-pressure covering strip tiller.

Background

Straw returning is the most critical technical link of current agricultural planting, the modern agricultural technology and planting technology are not separated from straw utilization, the protective cultivation technology comprises straw covering, the straw returning covering is the straw returning method which is most easily accepted by farmers from the national level to common farmers. The straw returning, covering and fertility-improving soil, solving the problem of straw going and avoiding straw burning.

Aiming at the problems that the stalks are difficult to leave stubbles, the row spacing is smaller than that of foreign countries and the wind is more great in spring at present in northeast China, the Chinese academy of sciences provides a stalk returning shallow-pressure covering strip rotary tillage technology. In order to better popularize the technology, a novel straw returning shallow-pressure covering strip cultivator is generated.

At present, straw returning and covering no-tillage seeding is to clean and return straw twice by using a front-mounted returning machine, then to carry out no-tillage seeding on a straw cleaning belt by using a no-tillage seeding machine, and also to carry out rotary tillage on the straw to a soil cultivation layer by using a strip rotary cultivator, and then to carry out seeding. And straw returning shallow-pressure covering strip cultivation does not have matched machines.

At present, the existing strip rotary cultivator generally adopts a rotary cultivator side box transmission mode, so that the condition of strip rotary tillage missing can be effectively avoided, but the uneven distribution of straws caused by the dragging of the side boxes severely restricts the wide popularization of the technology. The front structure of the straw treatment mechanism often causes suspension of the tractor due to uneven soil to influence the straw returning effect, thereby causing straw accumulation. The narrow rubber wheels can play a good role in limiting depth, but the problem that effective pressing of the straws cannot be achieved is solved, because the spring sowing season in northeast China is high in wind, the returning straws are blown away frequently due to the problem of high wind, so that the straws are unevenly distributed, the crop emergence is affected, and the effect of pressing and preserving soil moisture is difficult to achieve due to the fact that the rear single-roller pressing is achieved. The existing strip rotary cultivator cannot meet the technical requirements of straw returning shallow-pressure strip covering cultivation.

The prior art 'front-mounted corn protective cultivation straw returning machine' authorized bulletin number: CN 207720650U, as can be seen from fig. 1, the spring tooth 18 is mounted on the finger disc 17, and a hollow state is formed between the inside of the diameter of the finger disc 17 and the spring tooth 18, so that when the straw is easy to enter from the hollow place and then is wound on the finger disc 17 and the spring tooth 18, the straw cannot be covered uniformly, and even the finger disc 17 cannot rotate, thereby affecting the working efficiency.

The invention aims to solve the requirements of the matched machine tool for cultivating the existing straw returning covering strip, firstly, a novel straw cleaning returning mechanism is utilized to realize straw cleaning and even returning, then deep loosening and strip rotary tillage are carried out on a prepared cultivating strip, part of soil splashed in rotary tillage is used for shallow pressing and fixing the returning straw, and meanwhile, an anti-sticking soil compacting machine is utilized for compacting the rotary tillage strip and the straw returning strip. The agricultural requirements of straw returning shallow-pressure strip covering cultivation are completed once.

Disclosure of Invention

The invention relates to a straw returning shallow-pressure covering strip tiller, which comprises two rows of straw returning machines A, wherein the two rows of straw returning machines A comprise a main frame (1), a subsoiler (3), a power transmission mechanism (4), a rotary tillage mechanism (5), a retaining plate (6), a depth limiting pressing roller (7), an auxiliary pressing roller (8), two straw cleaning mechanisms (2), two fixed plates (9), two movable plates (10), two pressing wheels (11), two linkage rods (12), two support rods (13), two support plates (14), two nuts (15), two springs (16) and two connecting pins (17);

The deep scarification shovel (3), the rotary tillage mechanism (5), the soil retaining plate (6), the depth limiting press roller (7) and the auxiliary press roller (8) are sequentially arranged below the main frame (1) from front to back, two straw cleaning mechanisms (2) are arranged at the front end of the main frame (1), two straw cleaning mechanisms (2) are symmetrically arranged relative to the deep scarification shovel (3), connecting rods (2-11) on the straw cleaning mechanisms (2) are hinged with the main frame (1) through connecting pins (17), the upper end of the deep scarification shovel (3) is fixedly connected with the main frame (1), a shell (5-4) in the rotary tillage mechanism (5) is fixedly connected with the main frame (1), a driving wheel (5-1) in the rotary tillage mechanism (5) is fixedly arranged on an output shaft (4-1) of the power transmission mechanism (4), the upper end of the fixed plate (6) is hinged on the main frame (1), two fixed plates (9) are symmetrically arranged at two ends of the depth limiting press roller (7), one end of the fixed plate (9) is hinged with the main frame (7), the other ends of the fixed plate (9) are fixedly connected with the auxiliary press roller (8) at two ends of the auxiliary press roller (10) in a hinged mode, the other end of fly leaf (10) is articulated with main frame (1), two suppression wheel (11) symmetry sets up in the both sides of main frame (1) and be located the front of retaining board (6), the one end and the suppression wheel (11) of gangbar (12) are articulated, the other end and the main frame (1) of gangbar (12) are articulated, the one end and the gangbar (12) fixed connection of bracing piece (13), the other end of bracing piece (13) passes backup pad (14) and nut (15) threaded connection, spring (16) suit is on bracing piece (13) and be located between nut (15) and backup pad (14).

Further, the straw cleaning mechanism (2) comprises an outer ring (2-1), a fixed shaft (2-2), a bearing (2-3), a bearing sleeve (2-4), an inner circular baffle plate (2-5), an outer circular baffle plate (2-6), a vertical angle adjusting plate (2-7), a pin shaft (2-8), a horizontal angle adjusting plate (2-9), a fixed plate (2-10), a connecting rod (2-11), two clamping plates (2-12) and a plurality of elastic teeth (2-13), a plurality of elastic tooth holes (2-1-1) are uniformly distributed on the outer ring (2-1) along the circumference, one elastic tooth (2-13) is arranged in each elastic tooth hole (2-1-1), the elastic tooth plates are formed by the elastic teeth (2-3) and the outer ring (2-1), the bearing (2-4) and the bearing sleeve (2-4) are sequentially sleeved on the fixed shaft (2-2) from inside to outside, the elastic tooth plates are sleeved on the bearing sleeve (2-4), the inner circular baffle plate (2-5) and the outer circular baffle plate (2-6) are respectively arranged on two sides of the two right angle adjusting plates (2-12) symmetrically, a vertical angle adjusting plate (2-7) is provided with a vertical adjusting long hole (2-7-1), one end of a clamping plate (2-12) is fixed on a fixed shaft (2-2), the other end of the clamping plate (2-12) is located at the position of the vertical adjusting long hole (2-7-1), one end of the vertical angle adjusting plate (2-7) is hinged with the clamping plate (2-12) through a pin shaft (2-8), the other end of the vertical angle adjusting plate (2-7) is connected with the clamping plate (2-12) through the vertical adjusting long hole (2-7-1) by adopting a connecting element, the vertical angle adjusting plate (2-7) is fixed on a horizontal angle adjusting plate (2-9), the horizontal angle adjusting plate (2-9) and the fixed plate (2-10) are coaxially arranged, three horizontal adjusting long holes (2-9-1) are arranged on the fixed plate (2-9) along the same circumference, bolt holes (2-10) corresponding to the three horizontal adjusting long holes (2-9-1) are formed in the fixed plate (2-10), and the horizontal angle adjusting plate (2-9) is fixedly connected with the fixed plate (2-10) by adopting a connecting bolt.

Furthermore, an annular gap (S) is arranged between the outer circular baffle plate (2-6) and the outer ring (2-1), and the annular gap (S) is 10 mm-20 mm.

Further, three horizontal adjusting long holes (2-9-1) are uniformly distributed along the same circumference.

Further, rotary tillage mechanism (5) include action wheel (5-1), rotary tillage axle (5-2), follower (5-3), casing (5-4) and two rotary tillage sword (5-5), follower (5-3) set up in casing (5-4) and adorn admittedly on follower (5-2), rotary tillage axle (5-2) are supported on casing (5-4) through the bearing, two rotary tillage sword (5-5) set up respectively at the both ends of rotary tillage axle (5-2), and the center pin on rotary tillage sword (5-5) is connected with rotary tillage axle (5-2) fixed, follower (5-3) are connected with action wheel (5-1) transmission.

Further, the soil retaining plate (6) comprises an upper baffle (6-1), a lower baffle (6-2), a pull rod (6-3), a connecting plate (6-4) and two hinges (6-5), wherein the upper baffle (6-1) and the lower baffle (6-2) are integrally manufactured up and down, an obtuse angle (alpha) is formed between the lower baffle (6-2) and the upper baffle (6-1), a longitudinal long hole (6-4-1) is formed in the connecting plate (6-4), the upper end of the pull rod (6-3) penetrates through the longitudinal long hole (6-4-1) and then is connected with a connecting element, the lower end of the pull rod (6-3) is connected with the lower baffle (6-2), the connecting plate (6-4) is fixedly connected to the main frame (1), and the upper baffle (6-1) is hinged to the main frame (1) through the hinges (6-5).

Compared with the prior art, the invention has the following beneficial effects:

1. According to the invention, the straw cleaning mechanism (2) is utilized to return straws to the outside of the main frame (namely, the straws are poked to the two outer sides of the main frame, so that the straws are gathered on the two outer sides of the main frame), the seed bed is deeply loosened through the deep loosening shovel (3), rotary tillage soil breaking is carried out through the rotary tillage mechanism (5), the soil subjected to rotary tillage is subjected to primary compacting and secondary compacting through the depth limiting compacting roller (7) and the auxiliary compacting roller 8, and the straws on the two sides are compacted through the compacting roller (11).

2. The straw cleaning mechanism (2) is used for cleaning the straw on the rotary tillage belt, cleaning the straw to the two sides of the rotary tillage belt, achieving the purpose that no straw is mixed in the soil after rotary tillage, and ensuring that the sowing in the next year can be successfully completed.

The elastic tooth disc on the straw cleaning mechanism (2) can finish transverse position adjustment and vertical position adjustment relative to the ground, and the transverse position adjustment adjusts the inward or outward angle of the elastic tooth disc relative to the main frame (1) through the relative rotation of the horizontal angle adjusting disc (2-9) and the fixed disc (2-10), so as to control the straw cleaning width on the rotary tillage belt; the vertical position adjustment is used for adjusting the inclination angle between the spring tooth disc and the ground through the relative rotation of the clamping plates (2-12) and the vertical angle adjusting plates (2-7), the purpose of the vertical position adjustment is to prevent straw from being dragged due to the fact that the spring tooth disc is wound, if the spring tooth disc works perpendicular to the ground, the tail end of the spring tooth can generate upward straw picking force, the operating straw stays on the spring tooth disc for a long time, the dragging is easy to be caused, if the spring tooth disc generates an inclination angle to work through the adjustment of the angle, at the moment, the tail end of the spring tooth disc is just like a broom to sweep out the straw on the ground, and therefore the situation of dragging is not easy to generate.

Aiming at different plots and different straw states, the purpose of no straw on the rotary tillage belt can be achieved during working through transverse position adjustment and vertical position adjustment.

Because the outer circular baffle plate (2-6) is designed on the spring tooth disc, the spring tooth disc is basically closed by the outer circular baffle plate (2-6), so that the condition that the straws are wound on the spring tooth is avoided, the straws can be uniformly covered, and the working efficiency is improved.

3. The subsoiler (3) plays a role in subsoiling, the subsoiler depth is 20-25 centimeters (the depth is adjusted through a hole site on the subsoiler), and meanwhile, the subsoiler (3) can also help the rear rotary tillage blades to crush the part which cannot be subjected to rotary tillage in the middle. Because the power transmission mechanism (4) is positioned in the middle part of the frame (namely, the middle box structure), a non-rotary tillage belt is left in the middle of the frame when the machine works, and the subsoiler 3 is utilized to help the rotary tillage blade to break the non-rotary tillage belt in the middle while subsoiling; the subsoiler can also play a role in stabilizing the machine body.

4. The power transmission mechanism and the rotary tillage mechanism (5) are transmitted to the power transmission mechanism through the power output of the tractor to drive the rotary tillage cutter to rotate in the axial direction, the rotary tillage cutter plays a role in rotary tillage soil breaking, and the rotary tillage depth is set to be 50-100 mm in design, so that compared with the rotary tillage depth of the prior art, the rotary tillage depth is shallow (150-200 mm), the wet soil moisture is ensured to be small, and the standard of less moving soil in cultivation is reached. The depth-limiting compacting roller (7) is used for compacting the soil after rotary tillage, preventing the soil from being too loose and being unfavorable for preserving soil moisture, and simultaneously, the depth-limiting compacting roller also has the function of limiting the rotary tillage depth, and the rotary tillage depth is controlled between 5 cm and 10 cm, and is completed by the depth-limiting compacting roller (7).

5. The soil retaining plate (6) is used for retaining the rotary tillage cutter and driving soil to spray backwards due to high-speed rotation, the soil which is screwed up by the rotary tillage cutter can also return to the original position due to the blocking of the soil retaining plate (6), meanwhile, a small amount of soil can be sprayed out from two sides of the soil retaining plate, and the small amount of soil can be sprayed into straw strips on two sides to play a role of covering straws, so that the straws are prevented from being scraped by wind, and the sowing in the next year is affected.

6. The auxiliary compacting roller is used for secondarily compacting the compacted soil, so that gaps among the soil are tighter, and evaporation of water is further reduced.

7. The pressing wheel (11) rolls the straws cleaned to the two sides by the straw cleaning mechanism (2) to prevent the straws from influencing the bar rotary tillage operation.

Drawings

FIG. 1 is a front elevational view of the overall structure of the present invention;

FIG. 2 is a top view of FIG. 1 (with the power box 4 removed);

FIG. 3 is a top view of the latch (2);

FIG. 4 is a view in the K-direction of FIG. 3;

FIG. 5 is a view in the direction K of FIG. 3 (with the inner baffle 2-5 removed);

FIG. 6 is an M-direction view of FIG. 3;

FIG. 7 is a B-B rotational cross-sectional view of FIG. 6;

fig. 8 is a front view of a sixth embodiment;

FIG. 9 is a top view of embodiment seven;

Fig. 10 is a top view of an eighth embodiment.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 and 2, and includes a two-row straw returning machine a including a main frame 1, a subsoiler 3, a power transmission mechanism 4, a rotary tillage mechanism 5, a soil retaining plate 6, a depth-limiting press roller 7, an auxiliary press roller 8, two straw cleaning mechanisms 2, two fixing plates 9, two movable plates 10, two press rollers 11, two link levers 12, two support rods 13, two support plates 14, two nuts 15, two springs 16, and two connecting pins 17;

The subsoiler 3, the rotary tillage mechanism 5, the soil retaining plate 6, the depth limiting pressing roller 7 and the auxiliary pressing roller 8 are sequentially arranged below the main frame 1 from front to back, two straw cleaning mechanisms 2 are arranged at the front end of the main frame 1, the two straw cleaning mechanisms 2 are symmetrically arranged relative to the subsoiler 3, a connecting rod 2-11 on the straw cleaning mechanisms 2 is hinged with the main frame 1 through a connecting pin 17, the straw cleaning mechanisms 2 take the connecting pin 17 as an axis to realize the up-and-down movement of the straw cleaning mechanisms 2, the upper end of the subsoiler 3 is fixedly connected with the main frame 1, a shell 5-4 in the rotary tillage mechanism 5 is fixedly connected with the main frame 1, a driving wheel 5-1 in the rotary tillage mechanism 5 is fixedly arranged on an output shaft 4-1 of the power transmission mechanism 4, an outer box of the power transmission mechanism 4 is fixed at the middle part of the main frame 1, the upper end of the soil retaining plate 6 is hinged on the main frame 1, two fixed plates 9 symmetry sets up the both ends at limit dark press roller 7, the one end and the limit dark press roller 7 of fixed plate 9 are articulated, the other end and the main frame 1 fixed connection of fixed plate 9, two fly leaf 10 symmetry sets up the both ends at supplementary press roller 8, the one end and the supplementary press roller 8 of fly leaf 10 are articulated, the other end and the main frame 1 of fly leaf 10 are articulated, two press wheels 11 symmetry set up in the both sides of main frame 1 and are located the front of retaining plate 6, the one end and the press wheel 11 of gangbar 12 are articulated, the other end and the main frame 1 of gangbar 12 are articulated, the one end and the gangbar 12 fixed connection of bracing piece 13, the other end of bracing piece 13 passes backup pad 14 and nut 15 threaded connection, spring 16 suit is on bracing piece 13 and is located between nut 15 and the backup pad 14.

The soil retaining plate in this embodiment is adjustable, can realize the quantity that the soil splashes in the strip rotary tillage to can adjust the condition that straw shallow pressure is fixed according to specific soil and wind-force condition.

The second embodiment is as follows: referring to fig. 3 to 7, the straw cleaning mechanism 2 of the present embodiment includes an outer ring 2-1, a fixed shaft 2-2, a bearing 2-3, a bearing housing 2-4, an inner circular baffle 2-5, an outer circular baffle 2-6, a vertical angle adjusting plate 2-7, a pin shaft 2-8, a horizontal angle adjusting plate 2-9, a fixed plate 2-10, a connecting rod 2-11, two clamping plates 2-12, and a plurality of spring teeth 2-13;

The outer ring 2-1 is uniformly provided with a plurality of spring tooth holes 2-1-1 along the circumference, each spring tooth hole 2-1-1 is internally provided with a spring tooth 2-13, the outer ends of the plurality of spring teeth 2-13 form the same diameter, the inner ends of the plurality of spring teeth 2-13 form the same diameter, the plurality of spring teeth 2-13 and the outer ring 2-1 form a spring fluted disc, the bearing 2-3 and the bearing sleeve 2-4 are sequentially sleeved on the fixed shaft 2-2 from inside to outside, the spring tooth disc is sleeved on the bearing sleeve 2-4, the inner circular baffle plate 2-5 and the outer circular baffle plate 2-6 are respectively arranged on the inner side and the outer side of the spring fluted disc, the inner circular baffle plate 2-5 and the outer circular baffle plate 2-6 are connected by adopting a connecting element, and if a single spring tooth 2-13 is damaged, the spring teeth 2-13 can be independently replaced; the two clamping plates 2-12 are symmetrically arranged on two sides of the vertical angle adjusting plate 2-7, the vertical angle adjusting plate 2-7 is provided with a vertical adjusting long hole 2-7-1, one end of the clamping plate 2-12 is fixed on the fixed shaft 2-2, the other end of the clamping plate 2-12 is positioned at the vertical adjusting long hole 2-7-1, one end of the vertical angle adjusting plate 2-7 is hinged with the clamping plate 2-12 through a pin shaft 2-8, the other end of the vertical angle adjusting plate 2-7 adopts a connecting element and is connected with the clamping plate 2-12 through the vertical adjusting long hole 2-7-1, an included angle between the clamping plate 2-12 and the vertical angle adjusting plate 2-7 realizes the adjustment of an angle between a spring tooth disc and the ground, namely an inclined angle beta between the spring tooth disc and the ground, the vertical angle adjusting plate 2-7 is fixed on the horizontal angle adjusting disc 2-9, the horizontal angle adjusting disc 2-9 and the fixed disc 2-10 are coaxially arranged, three horizontal adjusting long holes 2-9-1 are arranged on the same circumference, the fixed disc 2-10 is provided with three horizontal adjusting bolts corresponding to the three horizontal adjusting long holes 2-9-10, and the fixed disc 2-10 is fixedly connected with the connecting disc 2-10 through the connecting bolts corresponding to the three horizontal adjusting long holes 2-1-2-10. Other components and connection relationships are the same as those of the first embodiment.

And a third specific embodiment: the present embodiment will be described with reference to fig. 5 and 7, in which an annular gap S of 10mm to 20mm is provided between the outer ring 2-1 and the outer ring 2-6. The annular gap S enables the spring teeth 2-13 to be more elastic, and straw can be better sprung away. Other components and connection relationships are the same as those of the second embodiment.

The specific embodiment IV is as follows: the present embodiment is described with reference to fig. 3, in which three horizontally adjusting elongated holes 2-9-1 are uniformly distributed along the same circumference. Other compositions and connection relationships are the same as those of the second or third embodiment.

Fifth embodiment: referring to fig. 1 and 2, a rotary tillage mechanism 5 of the present embodiment includes a driving wheel 5-1, a rotary tillage shaft 5-2, a driven wheel 5-3, a housing 5-4, and two rotary tillage blades 5-5, wherein the driven wheel 5-3 is disposed in the housing 5-4 and is fixedly mounted on the driven wheel 5-2, the rotary tillage shaft 5-2 is supported on the housing 5-4 through a bearing, the two rotary tillage blades 5-5 are disposed at two ends of the rotary tillage shaft 5-2, a central shaft on the rotary tillage blades 5-5 is fixedly connected with the rotary tillage shaft 5-2, the driven wheel 5-3 is in transmission connection with the driving wheel 5-1, and the driving wheel 5-1 is fixedly mounted on an output shaft of a power transmission mechanism 4. The rotary tillage cutter 5-5 is in the prior art. Other compositions and connection relationships are the same as those of the fourth embodiment.

Specific embodiment six: referring to fig. 1 and 2, the retaining plate 6 of this embodiment includes an upper baffle 6-1, a lower baffle 6-2, a pull rod 6-3, a connecting plate 6-4 and two hinges 6-5, the upper baffle 6-1 and the lower baffle 6-2 are integrally formed up and down, an obtuse angle α is formed between the lower baffle 6-2 and the upper baffle 6-1, a longitudinal slot 6-4-1 is formed in the connecting plate 6-4, the upper end of the pull rod 6-3 passes through the longitudinal slot 6-4-1 and then is connected with a connecting element, the lower end of the pull rod 6-3 is connected with the lower baffle 6-2, the connecting plate 6-4 is fixedly connected to the main frame 1, and the upper baffle 6-1 is hinged to the main frame 1 through the hinges 6-5. Other components and connection relationships are the same as those of the fifth embodiment.

Seventh embodiment: the sixth difference from the specific embodiment is that the sixth difference between the sixth embodiment and the specific embodiment is that a widening frame 18 is further added, the number of the two-row straw returning machines a is two, the two-row straw returning machines a are arranged below the widening frame 18 side by side, the main frame 1 on the two-row straw returning machines a is fixedly connected with the widening frame 18, and the outer box body of the power transmission mechanism 4 is fixed in the middle of the widening frame 18. The design enables the seed bed straw cleaning deep loosening and returning machine to complete cleaning of four rows of straws at one time. Other compositions and connection relationships are the same as those of the sixth embodiment.

Eighth embodiment: the sixth difference from the specific embodiment is that the present embodiment is further added with an extra wide frame 19, the number of the two-row straw returning machines a is three, the three two-row straw returning machines a are arranged below the extra wide frame 19 side by side, the main frame 1 on the two-row straw returning machines a is fixedly connected with the extra wide frame 19, and the outer box body of the power transmission mechanism 4 is fixed in the middle of the main frame 1 on the two-row straw returning machines a in the middle. The design enables the seed bed straw cleaning deep loosening and returning machine to complete six rows of straw cleaning at one time. Other compositions and connection relationships are the same as those of the sixth embodiment.

The working principle of the straw returning shallow-pressure covering strip tiller is as follows: this machine of returning to the palm is driven this kind of bed straw clearance subsoiling machine by wheeled tractor through the three-point suspension, power take off shaft on the tractor passes through the input of shaft coupling and power transmission mechanism 4 to drive rotary tillage mechanism 5 through power transmission mechanism 4, along with the tractor advances straw clearance mechanism 2 and begins to rotate and play the straw to two outsides of main frame 1, subsoiling shovel 3 subsoiling seed bed, rotary tillage mechanism 5 carries out rotary tillage soil breaking, limit dark suppression roller 7 and supplementary suppression roller 8 carry out primary suppression and secondary suppression with the soil that the rotary tillage has been accomplished, rolls the straw of both sides through the suppression wheel 11.

Claims (7)

1. A straw returning shallow-pressure covering strip tiller is characterized in that: the straw returning shallow-pressure covering strip tiller comprises two rows of straw returning machines A, wherein each two rows of straw returning machines A comprises a main frame (1), a subsoiling shovel (3), a power transmission mechanism (4), a rotary tillage mechanism (5), a soil retaining plate (6), a depth limiting pressing roller (7), an auxiliary pressing roller (8), two straw cleaning mechanisms (2), two fixing plates (9), two movable plates (10), two pressing wheels (11), two linkage rods (12), two supporting rods (13), two supporting plates (14), two nuts (15), two springs (16) and two connecting pins (17);

The deep scarification shovel (3), the rotary tillage mechanism (5), the soil retaining plate (6), the depth limiting press roller (7) and the auxiliary press roller (8) are sequentially arranged below the main frame (1) from front to back, two straw cleaning mechanisms (2) are arranged at the front end of the main frame (1), two straw cleaning mechanisms (2) are symmetrically arranged relative to the deep scarification shovel (3), connecting rods (2-11) on the straw cleaning mechanisms (2) are hinged with the main frame (1) through connecting pins (17), the upper end of the deep scarification shovel (3) is fixedly connected with the main frame (1), a shell (5-4) in the rotary tillage mechanism (5) is fixedly connected with the main frame (1), a driving wheel (5-1) in the rotary tillage mechanism (5) is fixedly arranged on an output shaft (4-1) of the power transmission mechanism (4), the upper end of the fixed plate (6) is hinged on the main frame (1), two fixed plates (9) are symmetrically arranged at two ends of the depth limiting press roller (7), one end of the fixed plate (9) is hinged with the main frame (7), the other ends of the fixed plate (9) are fixedly connected with the auxiliary press roller (8) at two ends of the auxiliary press roller (10) in a hinged mode, the other end of the movable plate (10) is hinged with the main frame (1), two pressing wheels (11) are symmetrically arranged on two sides of the main frame (1) and positioned in front of the soil retaining plate (6), one end of a linkage rod (12) is hinged with the pressing wheels (11), the other end of the linkage rod (12) is hinged with the main frame (1), one end of a supporting rod (13) is fixedly connected with the linkage rod (12), the other end of the supporting rod (13) passes through a supporting plate (14) and is in threaded connection with a nut (15), and a spring (16) is sleeved on the supporting rod (13) and is positioned between the nut (15) and the supporting plate (14);

The straw cleaning mechanism (2) comprises an outer ring (2-1), a fixed shaft (2-2), a bearing (2-3), a bearing sleeve (2-4), an inner circular baffle (2-5), an outer circular baffle (2-6), a vertical angle adjusting plate (2-7), a pin shaft (2-8), a horizontal angle adjusting disc (2-9), a fixed disc (2-10), a connecting rod (2-11), two clamping plates (2-12) and a plurality of spring teeth (2-13);

A plurality of elastic tooth holes (2-1-1) are uniformly distributed on the outer ring (2-1) along the circumference, an elastic tooth (2-13) is arranged in each elastic tooth hole (2-1-1), the elastic tooth disc is formed by the elastic teeth (2-13) and the outer ring (2-1), a bearing (2-3) and a bearing sleeve (2-4) are sequentially sleeved on a fixed shaft (2-2) from inside to outside, the elastic tooth disc is sleeved on the bearing sleeve (2-4), an inner circular baffle (2-5) and an outer circular baffle (2-6) are respectively arranged on the inner side and the outer side of the elastic tooth disc, two clamping plates (2-12) are symmetrically arranged on two sides of a vertical angle adjusting plate (2-7), a vertical adjusting long hole (2-7-1) is arranged on the vertical angle adjusting plate (2-7), one end of each clamping plate (2-12) is fixed on the fixed shaft (2-2), the other end of each clamping plate (2-12) is positioned at the vertical adjusting long hole (2-7-1), the vertical angle adjusting plate (2-7) is sleeved on the bearing sleeve, the other end of each clamping plate (2-12) is connected with one end of each vertical adjusting plate (2-7) through a vertical angle adjusting pin through a right angle adjusting element (2-8) and the vertical angle adjusting element (2-7), the vertical angle adjusting plate (2-7) is fixed on the horizontal angle adjusting plate (2-9), the horizontal angle adjusting plate (2-9) and the fixing plate (2-10) are coaxially arranged, three horizontal adjusting long holes (2-9-1) are formed in the horizontal angle adjusting plate (2-9) along the same circumference, bolt holes (2-10-1) which are in one-to-one correspondence with the three horizontal adjusting long holes (2-9-1) are formed in the fixing plate (2-10), the horizontal angle adjusting plate (2-9) and the fixing plate (2-10) are connected through bolts, and the fixing plate (2-10) is fixedly arranged on the connecting rod (2-11).

2. The straw return shallow-pressing cover strip tiller according to claim 1, wherein: an annular gap (S) is arranged between the outer circular baffle plate (2-6) and the outer ring (2-1), and the annular gap (S) is 10 mm-20 mm.

3. A straw return shallow-pressing cover strip tiller according to claim 1 or 2, characterized in that: the three horizontal adjusting long holes (2-9-1) are uniformly distributed along the same circumference.

4. A straw return shallow-pressing cover strip tiller according to claim 3, characterized in that: the rotary tillage mechanism (5) comprises a driving wheel (5-1), a rotary tillage shaft (5-2), a driven wheel (5-3), a shell (5-4) and two rotary tillage blades (5-5), wherein the driven wheel (5-3) is arranged in the shell (5-4) and fixedly arranged on the rotary tillage shaft (5-2), the rotary tillage shaft (5-2) is supported on the shell (5-4) through a bearing, the two rotary tillage blades (5-5) are respectively arranged at two ends of the rotary tillage shaft (5-2), a central shaft on the rotary tillage blades (5-5) is fixedly connected with the rotary tillage shaft (5-2), and the driven wheel (5-3) is in transmission connection with the driving wheel (5-1).

5. The straw return shallow-pressing cover strip tiller according to claim 4, wherein: the soil retaining plate (6) comprises an upper baffle (6-1), a lower baffle (6-2), a pull rod (6-3), a connecting plate (6-4) and two hinges (6-5), wherein the upper baffle (6-1) and the lower baffle (6-2) are integrally manufactured up and down, an obtuse angle (alpha) is formed between the lower baffle (6-2) and the upper baffle (6-1), a longitudinal long hole (6-4-1) is formed in the connecting plate (6-4), the upper end of the pull rod (6-3) penetrates through the longitudinal long hole (6-4-1) and then is connected with a connecting element, the lower end of the pull rod (6-3) is connected with the lower baffle (6-2), the connecting plate (6-4) is fixedly connected to the main frame (1), and the upper baffle (6-1) is hinged to the main frame (1) through the hinges (6-5).

6. The straw return shallow-pressing cover strip tiller according to claim 5, wherein: the straw returning shallow-pressure covering strip tiller further comprises a widening rack (18), the number of the two rows of straw returning machines A is two, the two rows of straw returning machines A are arranged below the widening rack (18) side by side, and the main frames (1) on the two rows of straw returning machines A are fixedly connected with the widening rack (18).

7. The straw return shallow-pressing cover strip tiller according to claim 6, wherein: the straw returning shallow-pressure covering strip tiller further comprises an extra-wide frame (19), the number of the two-row straw returning machines A is three, the three two-row straw returning machines A are arranged below the extra-wide frame (19) side by side, and the main frames (1) on the two-row straw returning machines A are fixedly connected with the extra-wide frame (19).