CN114391319A - Rotary tillage seeder - Google Patents

Abstract

The invention discloses a rotary tillage planter which comprises a walking bracket, a rotary tillage cutter shaft, a press wheel, rotary tillage cutters, a seeding box, a fertilizing box, a transmission device and a core ploughshare, wherein a plurality of rotary tillage cutters are arranged on the rotary tillage cutter shaft in a group in pairs, and two rotary tillage cutters in each group of rotary tillage cutters are symmetrically arranged; a plurality of core ploughshares and a plurality of fertilizer discharging pipes on the fertilizer box are respectively arranged along the axial direction parallel to the rotary tillage cutter shaft and are all positioned on the central symmetrical position corresponding to the rotary tillage cutter group; the seeding pipes on the seeding box are in a group two by two and are arranged at equal intervals in a mode that the centrosymmetric positions of the seeding pipe groups are consistent with the centrosymmetric positions of the rotary tillage cutter groups. The beneficial effects are that: the rotary tillage blades of the inter-row rotary tillage device are only arranged at the narrow-spacing positions of the adjacent seed discharge pipes of the seeder, so that the power consumption is reduced, the soil corresponding to the wide spacing of the adjacent seed discharge pipes of the seeder is not subjected to rotary tillage during the operation of the seeder, and the aim of protective tillage can be fulfilled; after sowing, wheat seedlings form wide-narrow row alternation, plant positions are staggered, and ventilation and light transmission of wheat are facilitated.

Description

A rotary tiller

technical field

The invention relates to the technical field of agricultural machinery, in particular to a wide and narrow row rotary tiller with side deep fertilization.

Background technique

Although the current wheat duplex working machine has the functions of ditching, leveling, sowing, and suppressing, the operation effect is equal row spacing, which makes the wheat plants have poor ventilation and light transmission, which affects the wheat yield; and the fields between the rows that are not planted with wheat are also tilled. , which not only consumes a lot of operating power, but also is not conducive to field fertilization; at the same time, this kind of operating machine also needs to cooperate with a fertilizer spreader or artificial fertilizer, and the artificial soil preparation process can be well implemented when artificial fertilizer is raised. Therefore, the separate operation method of sowing and fertilization makes the fertilizer cannot be accurately and evenly distributed in the sowing area, resulting in serious waste and loss, and the fertilizer layer is chaotic and the amount of bottom fertilizer is small.

SUMMARY OF THE INVENTION

In order to solve the problems existing in the prior art, the present invention provides a wide and narrow row planter with side deep fertilization, which can reduce soil tillage, achieve the purpose of protective operation, and also enable wheat plants to make full use of light and fertilizers. , the effect of increasing production is remarkable, and the deep fertilization and sowing operations are carried out synchronously, which improves work efficiency and reduces operating costs. In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

The rotary tiller planter includes a walking support, a rotary tiller shaft and a repression wheel that are rotatably supported on the walking stand, a rotary tiller connected to the rotary tiller shaft, a seeding box, a fertilization box, and a The transmission device and the core share, a plurality of rotary tillers are arranged in two groups and arranged on the shaft of the rotary tillers according to the same group spacing. The land of rotary tillage and non-tillage is alternately distributed; several cores and several fertilization pipes on the fertilization box are respectively arranged in the axial direction parallel to the axis of the rotary tiller, and are in symmetrical positions corresponding to the center of the rotary tiller group ;Several seeding pipes on the seeding box are arranged in two groups, and they are arranged at equal intervals in a way that the center symmetrical position of the seeding pipe group is consistent with the center symmetrical position of the rotary tiller group, and each row of seed pipes is in the position of the corresponding rotary tiller. On the ploughing position, the soil to be ploughed is sown to form a wide and narrow distribution of seed row spacing; the fertilization ditch is opened by the core, and the fertilization ditch is fertilized by the fertilization pipe, and the rotary tiller only applies fertilizer to the fertilization ditch. The fields on both sides are rotary tilled, and the repression wheel covers and represses the sown fields.

A further design of the rotary tiller planter is that the core is connected to the walking support through the fixed seat in an adjustable up and down position.

The further design of the rotary tiller is that the core part includes a part and a handle; the front side of the part is a knife part, and the rear side is a back part, and is in the shape of a sharp knife; the handle part is provided with a number of adjustment holes distributed along the height. ;The fixed seat is provided with an insertion slot that is adapted to the handle, and two parallel groove walls of the insertion slot are provided with concentric mounting holes; the fixed seat is connected to the walking bracket, and the handle of the core is inserted into the insertion In the slotted hole, the mounting holes at different heights are adjusted to match the positions of the mounting holes on the fixed seat, and the upper and lower positions of the core ware can be adjusted to be connected to the walking bracket through the connection of bolts and nuts.

The further design of the rotary tiller is that, the back of the core share is provided with a wing plate for positioning the fertilizer discharge pipe, the two wing plates are respectively connected to the two sides of the corresponding position of the core share, and the fertilizer discharge end of the fertilizer discharge pipe is clamped on the Between the two wing plates, a deep fertilizing unit is formed.

A further design of the rotary tiller is that the seeding shaft of the seeding box and the driving shaft of the fertilizing box are driven by connecting the two ends of the pressing wheel axle through a transmission chain unit.

The further design of the rotary tiller is that the transmission chain unit includes a driving sprocket arranged on the axle of the chain pressing wheel, a first driven sprocket arranged on the drive shaft of the seeding box, and a first driven sprocket arranged on the fertilizing box. Two driven sprockets, a transition sprocket arranged on the walking support, a first chain that drives the driving sprocket and the transition sprocket, a second chain that drives the transition sprocket and the first driven sprocket, and a first chain that drives the transition sprocket and the first driven sprocket. A driven sprocket and a third chain of a second driven sprocket.

A further design of the rotary tiller is that it also includes a pressing wheel depth adjustment mechanism, which includes a depth-limiting pressing piece, a lifting lug, a depth-limiting pressing rod, a depth-limiting pressing pin, and a depth-limiting pressing pin. A compression spring, the lifting lug is arranged on the transmission chain unit, the depth-limiting compression rod is connected to the walking bracket and is hinged on the lifting lug through a depth-limiting compression pin, and the depth-limiting compression spring is sleeved on the lifting lug. The depth-limiting pressing rod and the depth-limiting pressing sheet are fixed on the walking support and abut against the depth-limiting pressing spring.

A further design of the rotary tiller seeder is that it further includes a deep fertilization unit, the deep fertilization unit and the fertilizer discharge pipe are in one-to-one correspondence, and are located on the same straight line along the advancing direction of the seeder.

A further design of the rotary tiller is that the rotary tiller shaft is provided with a disc, the rotary tiller blade is curved, and is evenly fixed on the disc by screws and nuts, and the two adjacent rotary tiller blades are fixed. In the opposite direction.

A further design of the rotary tiller seeder is that it further includes a three-point suspension mechanism, which is fixed on the walking support and is mechanically connected to the tractor.

Technical effects and advantages of the present invention:

In the above-mentioned rotary tiller of the present invention, the rotary tillers are arranged symmetrically in groups of two, and are arranged on the shaft of the rotary tillers at equal intervals in groups, and the group spacing is greater than the knife spacing of two rotary tillers in a group, and is equal to each other. The ditching share is set at the center of the rotary cultivator, and the seed discharge pipe on the planter and the fertilization pipe on the fertilization box are respectively facing the rotary plowing position of the rotary cultivator and the position of the ditching share; It is completed during the operation, and the tillage is only limited to the sowing area, which greatly reduces the consumption of tillage power, which is beneficial to reduce carbon emissions, and also makes the planted wheat plants have good ventilation and light transmission, thereby increasing the yield; at the same time, the fertilization point can be accurately aligned. The sowing area is possible, the fertilizer is evenly distributed, and the fertilizer layer is basically constant, especially the amount of fertilizer at the bottom layer can be guaranteed, the fertilizer loss is small, and the use efficiency is high. On the other hand, by alternately arranging the wide and narrow rows of the seed tube, the non-equidistant row spacing operation of the wheat is realized, which ensures the ventilation and light transmission of the plants and improves the yield.

Description of drawings

FIG. 1 is a schematic diagram of the left front side of the structure of the rotary tiller of the present invention.

Figure 2 is a front view of the rotary tiller.

Figure 3 is a side view of the rotary tiller.

Figure 4 is a top view of the rotary tiller.

FIG. 5 is an enlarged view of part A of the top view of the rotary tiller planter shown in FIG. 4 .

FIG. 6 is a schematic diagram of the left rear side of the overall structure of the rotary tiller.

FIG. 7 is an enlarged view of the left rear side schematic diagram of the overall structure of the rotary tiller planter shown in FIG. 6 of the present invention;

Fig. 8 is a schematic diagram of the structure of the rotary tillage device between rows.

Figure 9 is a schematic diagram of the structure of the deep fertilization unit.

The reference numerals are: 1. Roto-row tillage device; 1-1, Rotor blade shaft; 1-2, Roto tiller blade; 1-3, Disc; 2, Deep fertilization unit; 2-1, Core handle; 2-1. Core Wah; 2-3. Wing plate; 2-4. Through hole for adjusting groove depth; 3. Front travel bracket; 4. Three-point suspension mechanism; 5. Seeding box; 6. Intermediate gear transmission box; 7. , Fertilizer box; 8, Seed metering device; 9, Fertilization device; 10, Universal joint; 11, Secondary long side gearbox; 12, Repression wheel; 13, Sprocket; 14, Fertilizer discharge pipe; 15, Seed metering tube; 16. Rear walking bracket; 17. Transmission chain unit; 18. Pressing wheel depth adjustment mechanism; Tightening rod; 18-4 deep compression pin; 18-5, lifting lug.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the wide and narrow row protective tillage seeder with side deep fertilization in this embodiment is mainly composed of a traveling bracket, a rotary tiller shaft 1-1 rotatably supported on the traveling bracket, and a repressor. The wheel 12, the rotary tiller 1-2 connected to the rotary tiller shaft 1-1 and the transmission device fixed on the walking support, the seeding box 5, the fertilization box 7, the core 2-3, several rotary tillers 1- 2. Two groups of two are arranged on the rotary tiller shaft 1 according to the same group spacing. The two rotary tillers 1-2 in each group are symmetrically arranged with the same knife spacing, and the group spacing is greater than the knife spacing, resulting in the formation of rotary tillage and inconsistency. The cultivated land is alternately distributed. The plurality of cores 2-3 and the plurality of fertilization pipes 14 on the fertilization box 7 are respectively arranged along the axial direction parallel to the axis of the rotary tiller, and are in symmetrical positions corresponding to the center of the rotary tiller group. Several seed pipes 15 on the seeding box 5 are arranged in two groups, and are arranged at equal intervals in a manner that the center symmetrical position of the seed pipe group is consistent with the center symmetrical position of the rotary tiller group, and each row of seed pipes 15 is in the corresponding rotary tillage position. On the ploughing position of knife 1-2, sown the soil to be rotary tilled to form a wide and narrow distribution of seed row spacing. The core 2-1 opens a fertilization ditch, the fertilization pipe 14 fertilizes the opened fertilization ditch, the rotary blade 1-2 only rotates the fields on both sides of the fertilization ditch, and the repression wheel 12 covers the sown field with soil planted and suppressed.

As shown in FIG. 8 , the rotary tiller shaft 1-1 in this embodiment is provided with a disc 1-3, and the rotary tiller blade 1-2 is in the shape of a curved arc, fixed by screws and nuts, and is evenly distributed on the disc 1-3. It is assumed that the fixed directions of the two adjacent rotary tillage blades 1-2 are opposite, and the rotary tillage blade shaft 1-1, the rotary tillage blade 1-2 and the disc 1-3 together form the inter-row rotary tillage device 1.

As shown in Fig. 9, a deep fertilization unit 2 is arranged between the two groups of narrow-spaced seed metering pipes 15 directly in front of and horizontally. and groove depth adjustment through holes 2-4. The deep fertilization unit 2 is fixed on the beam 16 of the rear travel bracket through bolts through the groove depth adjustment through holes 2-4 and nuts, the core 2-2 is welded under the core handle 2-1, and the wing plate 2-3 is welded with the core handle. 2-1 is centered and rearward, a plurality of groove depth adjustment through holes 2-4 are opened above the handle 2-1, the fertilization pipe 14 is fixed behind the wing plate 2-3 of the deep fertilization unit 2, and the fertilization pipe 14 is connected to the deep fertilization unit. 2 are in one-to-one correspondence, and are on the same straight line along the advancing direction of the planter. When the planter is in operation, the fertilizer can evenly fall into the opened fertilizer ditch, and the fertilization and sowing operations are carried out simultaneously.

The transmission device of this embodiment is mainly composed of an intermediate gear transmission case 6 and a secondary long side transmission case 11 . The intermediate gear transmission case 6 is connected with the tractor power output device. The secondary long side gearbox 11 is drivingly connected with the intermediate gear transmission box 6 through the universal joint 10, and the inter-row rotary tiller 1 is drivingly connected with the secondary long side gearbox 11 through the spline shaft.

The walking bracket in this embodiment is mainly composed of a front walking bracket 3 and a rear walking bracket 16 that are fixedly connected to each other. The intermediate gear transmission box 6 is located above the front walking bracket 3, the secondary long side gearbox 11 is located on the left side of the front walking bracket 3 in the forward direction of the planter, the inter-row rotary tillage device 1 is arranged at the bottom of the front walking bracket 3, and the fertilization box 7 . The seeding box 5 is arranged above the rear traveling bracket 16 , and the deep fertilization unit 2 and the pressing wheel 12 are arranged at the bottom of the rear traveling bracket 16 .

The transmission device of this embodiment further includes a transmission chain unit 17, and the seed metering shaft of the seeding box 5 and the driving shaft of the fertilization box 7 are driven by connecting the two ends of the roller shaft of the pressing wheel through the transmission chain unit. The transmission chain unit 17 is mainly composed of a driving sprocket arranged on the axle of the chain pressing wheel, a first driven sprocket arranged on the drive shaft of the seeding box, a second driven sprocket arranged on the fertilization box, and arranged on the walking bracket. The transition sprocket, the first chain that drives the drive sprocket and the transition sprocket, the second chain that drives the transition sprocket and the first driven sprocket, and the drive connects the first driven sprocket and the second driven chain The wheel consists of the third chain.

The bottom of the seeding box 5 in this embodiment is also provided with a seed dialing device 8. The seed dialing device 8 can adjust the amount of seeds discharged. The discharge port of the seed dialing device 8 is connected to the seed discharge pipe 15. The row spacing of the two adjacent rows of the seed pipe 15 is “ Narrow-wide-narrow" rows are arranged in sequence. There is also a fertilizer discharge device 9 at the bottom of the fertilization box 7. The fertilizer discharge device 9 can adjust the amount of fertilizer discharge. The discharge port of the fertilizer discharge device 9 is connected with a fertilizer discharge pipe 14. The tube 15 is in the middle position directly in front of it.

The pressing wheel 12 of the present embodiment is rotatably connected to the lower part of the rear travel bracket 16 through the pressing wheel depth adjusting mechanism 18, and controls the pressing wheel to follow the shape movement anywhere. The pressing wheel depth adjustment mechanism 18 is mainly composed of: a depth-limiting pressing piece 18-1, a deep-limiting pressing spring 18-2, a deep-limiting pressing rod 18-3, a deep-limiting pressing pin 18-4 and a lifting lug 18-5 composition. The depth-limiting pressing spring 18-2 is sleeved on the depth-limiting pressing rod 18-3, and the lifting lug 18-5 is arranged on the transmission chain unit 17. The depth-limiting pressing sheet 18-1 is fixed on the traveling bracket and is in contact with the depth-limiting pressing spring 18-2, and is used to control the maximum expansion and contraction amount of the depth-limiting pressing spring 18-2. The depth-limiting pressing rod 18-3 passes through the rear travel bracket 16 and is hinged on the lifting lug 18-5 through the depth-limiting pressing pin 18-4, so as to fix the longitudinal position of the pressing wheel depth adjusting mechanism 18.

The planter of the present embodiment further includes a three-point suspension mechanism 4, which is fixed above the front travel bracket 3 for motorized connection with the tractor.

During actual work, the rotary tiller of the present embodiment specifically includes the following processes:

The ground preparation operation process: the three-point suspension mechanism 4 of the seeder is connected with the tractor, the tractor drives the whole seeder forward, the tractor power output device transmits the power to the intermediate gear transmission box 6 through the universal joint, and the intermediate gear transmission box 6 passes through the universal joint 10. The power is transmitted to the secondary long side gearbox 11, and the secondary long side gearbox 11 transmits the power to the rotary tiller shaft 1-1 and the inter-row rotary tiller device 1 of the rotary tiller shaft 1-1 through gear transmission Rotary tillage blades 1-2 are arranged in the middle position of the narrow distance between the adjacent seeding pipes 15 of the wide and narrow row planters, and the rotary tillage blades 1-2 perform rotary tillage on the soil corresponding to the adjacent narrowly spaced seeding pipes 15 of the planter. Rotary cultivated land is formed after the operation. The wide and narrow row planters do not set the rotary tillage blades 1-2 at the wide position. The soil corresponding to the wide position of the planter has not been rotary tilled, and is still stubble. This blade setting method can be used. Reduce power consumption and realize conservation tillage.

The operation process of deep fertilization and sowing: before the planter works, adjust the depth of the deep fertilization unit 2 and adjust the fixed positions of the through holes 2-4 so that the depth of the opened fertilizer ditch is suitable. When the planter works, the deep fertilization unit 2 will follow Forward, the core 2-2 of the deep fertilization unit 2 is in contact with the soil, and a fertilizer trench with suitable depth is opened; the seed metering pipe 15 is arranged behind the fertilizer discharge pipe 14, and the pressing wheel 12 is imitated anywhere by the pressing wheel depth adjustment mechanism 18. When the pressing wheel 12 rotates, the power is transmitted to the sprocket 13 through the transmission gear. The sprocket 13 transmits the power to the fertilization box 9 through the transmission chain 17, and drives the fertilizer in the fertilization box to enter the fertilizer discharge pipe 14. The discharge port of the pipe 14 falls into the fertilizer ditch opened by the core 2-2 of the deep fertilization unit 2. The fertilization box 9 transmits the power to the seed metering device 8 through the transmission chain 17, and drives the seeds 20 in the seeding box 5 to enter. Wide and narrow rows of seed metering pipes 15, seeds from the discharge port of the wide and narrow rows of seed metering pipes 15 fall on the soil surface on the left and right sides of the fertilizer ditch, and the fertilization and sowing work are carried out simultaneously.

The process of covering seeds and pressing: the pressing wheel 12 is arranged after the seeding tube 15, and the pressing wheel 12 moves forward according to the shape of the pressing wheel depth adjustment mechanism 18, and the soil brought up by the pressing wheel 12 covers the seeds falling on the soil surface when the pressing wheel 12 moves forward. When the pressing wheel 12 moves forward, the soil covering and seeding work are simultaneously carried out; when the seeder is operating, the soil preparation, deep fertilization, sowing, seeding and suppression work can be completed at one time.

In the wide and narrow row planter with side deep fertilization in this embodiment, the rotary tiller shaft 1-1 used in the inter-row rotary tillage device 1 reduces the entanglement of sludge and straw on the knife shaft, and the inter-row rotary tillage device 1 adopts a large rotation Radius curved rotary blades 1-2 can increase the depth of rotary tillage, increase the ratio of soil to grass, improve the effect of stubble burying, and lay a good foundation for the subsequent high-quality sowing operations; rotary tillage blades 1- 2. It is arranged in the middle of the narrow distance position adjacent to the seeding pipe 15 of the planter, and the rotary blade 1-2 is not set at the wide distance position adjacent to the seeding pipe 15 of the planter, which can reduce the weight of the machine and reduce the power consumption during the operation of the planter. ; The soil corresponding to the narrow distance between the adjacent seeding pipes 15 of the planter is rotary tillage, which can be used for sowing and fertilization operations. The purpose of conservation tillage can be achieved in the stubble land; before sowing, a groove fertilizer bed with a depth of 5-8cm is made on the seedbed through the deep fertilization unit 2, and then a fertilization discharge for fertilization is set after the deep fertilization unit 2. Pipe 14, after the fertilizer discharge pipe 14, a wide and narrow row seed feeding pipe 15 for seeding is arranged. After sowing, the wheat seedlings form alternating wide and narrow rows, and the plant positions are staggered, which is conducive to the ventilation and light transmission of wheat, and the deep fertilization between the narrow rows is conducive to The fertilizer is fully utilized, and the yield increase effect is remarkable; after the seed feeding pipe 15, the crushing wheel 12 is designed for covering the seeds, and the height of the crushing wheel relative to the rear walking bracket 16 is adjusted by adjusting the depth adjusting mechanism 18 of the crushing wheel. The wide and narrow row planter with side deep fertilization can complete the five processes of soil preparation, deep fertilization, sowing, seed covering and suppression at one time, with high operation efficiency and high sowing quality. The planter of the embodiment of the present invention has a compact structure, achieves the purpose of light weight, reduces power consumption and reduces the quality of the whole machine; the purpose of protective tillage can be achieved when the rotary tillage device between rows is used for soil preparation; The fertilization operation solves the problem of low fertilizer utilization rate; the seeder can adapt to the change of the terrain; the present invention can realize the simultaneous sowing and fertilization operation, the fertilization depth is 5-8cm, the sowing depth is 2-4cm, the floating seed rate is less than or equal to 3%, and the deep seeding rate ( 5cm or more)≦3%.

The technical solutions of the present invention are not limited to the above-mentioned embodiments, and all technical solutions obtained by adopting equivalent replacement methods fall within the protection scope of the present invention.

Claims (10)

1. A rotary tiller planter, comprising a walking bracket, a rotary tiller shaft and a repression wheel that are rotatably supported on the walking rack, a rotary tiller connected to the rotary tiller shaft, a seeding box fixed on the walking rack, and a fertiliser. The box, the transmission device and the core share are characterized in that: a plurality of rotary tillers are arranged in groups of two and arranged on the shaft of the rotary tillers according to the same group spacing, and the two rotary tillers in each group of tillers are symmetrically arranged with the same knife spacing, and The group spacing is greater than the blade spacing, resulting in the alternating distribution of tilled and non-tilled land; several cores and several fertilization pipes on the fertilization box are respectively arranged in the axial direction parallel to the axis of the rotary cultivator, and all are in the corresponding position of the rotary cultivator blade. In the symmetrical position of the center of the group; several seeding pipes on the seeding box are arranged in two groups, and they are arranged at equal intervals in a way that the center of the seeding pipe group is consistent with the center of the rotary knife group, and each seeding pipe is in Corresponding to the ploughing position of the rotary cultivator, the soil to be ploughed is sown to form a wide and narrow distribution of seed row spacing; the fertilization ditch is opened by the core, and the fertilization ditch is opened by the fertilization pipe for fertilization, and the rotary ploughing is performed. The knife only rotates the fields on both sides of the fertilization ditch, and the repression wheel covers and represses the sown fields. 2 . The rotary tiller according to claim 1 , wherein the core is connected to the traveling support through the fixed seat in an adjustable up and down position. 3 . 3. The rotary tiller according to claim 2, characterized in that the core part comprises a part and a handle; the front side of the part is a knife part, and the rear side is a back, and is in the shape of a sharp knife; There are several adjustment holes distributed in height; the fixed seat is provided with an insertion slot that is adapted to the handle, and the two parallel groove walls of the insertion slot are provided with concentric installation holes; the fixed seat is connected to the walking bracket, and the core The shank is inserted into the insertion slot hole, and the mounting holes at different heights are adjusted to match the positions of the mounting holes on the fixed seat, and the upper and lower positions of the core are adjustable on the walking bracket through the connection of bolts and nuts. 4. The rotary tiller planter according to claim 3 is characterized in that the back of the core share is provided with a wing plate for positioning the fertilizer discharge pipe, and the two wing plates are respectively connected on both sides of the corresponding position of the core share. The fertilizing end is clamped between the two wing plates to form a deep fertilizing unit. 5. The rotary tiller according to claim 1, characterized in that the transmission device comprises: an intermediate gear transmission case, a secondary long side gearbox, the intermediate gear transmission case is connected with the tractor power output device, and the secondary transmission case is connected to the tractor power output device. The long-side gearbox is connected with the intermediate gear transmission box through a universal joint, and the rotary tiller shaft is connected with the secondary long-side gearbox through a spline shaft. 6. The rotary tiller planter according to claim 5, characterized in that the transmission device further comprises a transmission chain unit, and the seed metering shaft of the seeding box and the driving shaft of the fertilization box are connected to the two shafts of the pressing wheel through the transmission chain unit. end is driven. 7. The rotary tiller planter according to claim 6, characterized in that the transmission chain unit comprises a driving sprocket arranged on the axle of the chain pressing wheel, a first driven sprocket arranged on the driving shaft of the seeding box, a The second driven sprocket on the fertilization box, the transition sprocket arranged on the walking bracket, the first chain driving the driving sprocket and the transition sprocket, the first chain driving the transition sprocket and the first driven sprocket Two chains and a third chain drivingly connecting the first driven sprocket and the second driven sprocket. 8 . The rotary tiller according to claim 7 , further comprising a pressing wheel depth adjustment mechanism, wherein the pressing wheel depth adjusting mechanism comprises a depth-limiting pressing piece, a lifting lug, a depth-limiting pressing rod, a depth-limiting pressing rod, a A compression pin and a depth-limiting compression spring, the lifting lug is arranged on the transmission chain unit, the depth-limiting compression rod is connected to the walking bracket and is hinged on the lifting lug through the depth-limiting compression pin, and the depth-limiting compression rod is connected to the lifting lug. The compressing spring is sleeved on the depth-limiting compressing rod, and the depth-limiting compressing sheet is fixed on the traveling bracket and abuts against the depth-limiting compressing spring. 9. The rotary tiller planter according to claim 1, characterized in that a disc is arranged on the shaft of the rotary tiller, and the rotary tiller blade is in the shape of a curved arc, which is evenly fixed on the disc by screws and nuts and is adjacent to each other. The two rotary tiller blades are fixed in opposite directions. 10 . The rotary tiller according to claim 1 , further comprising a three-point suspension mechanism, the three-point suspension mechanism is fixed on the traveling support and is mechanically connected to the tractor. 11 .

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