Rotary track type drip irrigation no-tillage seeding and straw cleaning and returning device

Abstract

The present application relates to a kind of rotary rail type drip irrigation no-tillage seeding straw cleaning return device, the rotary rail type drip irrigation no-tillage seeding straw cleaning return device includes motor, transmission mechanism, track, straw mechanism, soil covering and pressing mechanism and support protection mechanism.The track is a high-low undulating annular, the annular is composed of low level section, rising section, high level section and falling section four parts.The present application can be achieved after drip irrigation tape laying and seeding, straw is returned and covers on drip irrigation tape, reduces water evaporation, improves water and fertilizer utilization efficiency, water-saving efficiency is increased;Rotary rail type straw return mechanism is used to make rotary undulating motion, when moving to seeding line, straw return mechanism makes ascending rotary motion, can avoid the disturbance to seed after sowing.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of agricultural machinery and relates to a rotary rail type straw cleaning and returning device for drip irrigation no-tillage seeding. BACKGROUND

[0002] No-tillage seeding technology refers to a technology of directly seeding a subsequent crop without land tillage after harvesting of a previous crop. In the no-tillage seeding operation in a drip irrigation area, straw in a region where drip irrigation and seeding are performed is first cleaned, then seeding and drip irrigation tape laying are performed in the cleaned region, and after the seeding is completed, the seeds are covered and pressed. After the drip irrigation tape laying is completed, part of the straw needs to be covered on the drip irrigation tape to prevent the drip irrigation tape from being blown away by the wind and to reduce water evaporation. During the straw returning and covering and pressing operation, the seeds after seeding need to be prevented from being disturbed.

[0003] At present, the existing no-tillage seeding straw cleaning device in the market is mainly used for straw cleaning before and during seeding, and in the drip irrigation area, after the no-tillage seeding straw cleaning, the straw needs to be returned to prevent the laid drip irrigation tape from being blown away by the wind, and the straw covering above the drip irrigation tape can reduce water evaporation. At present, there is no report on returning the straw after the no-tillage seeding straw cleaning in the drip irrigation area. SUMMARY

[0004] In view of the above technical problems, the application aims to provide a rotary rail type straw cleaning and returning device for drip irrigation no-tillage seeding, which can return and cover the straw on the drip irrigation tape after the drip irrigation tape laying and seeding are completed, reduce water evaporation, improve water and fertilizer utilization efficiency, save water and increase efficiency, and adopt a rotary rail type straw returning mechanism to make rotary and heaving movements, and when the straw returning mechanism moves to a seeding row, the straw returning mechanism makes upward rotary movement, so that the seeds after seeding can be prevented from being disturbed.

[0005] In order to achieve the above-mentioned purpose, the application provides the following technical scheme.

[0006] A rotary rail type straw cleaning and returning device 7 for drip irrigation no-tillage seeding is used to return and cover the straw on the drip irrigation tape after the drip irrigation tape laying and seeding are completed. The rotary rail type straw cleaning and returning device 7 for drip irrigation no-tillage seeding comprises a motor 7-1, a transmission mechanism 7-2, a rail 7-3, a straw returning mechanism 7-4, a covering and pressing mechanism 7-5, and a supporting and protecting mechanism 7-6.

[0007] The support protection mechanism 7-6 includes a bottom plate 7-6-1, a lower baffle 7-6-2, an upper baffle 7-6-3, a top plate 7-6-4 and a center support column 7-6-5; the bottom plate 7-6-1 and the top plate 7-6-4 are circular; the lower baffle 7-6-2 is fixed on the upper surface edge of the bottom plate 7-6-1 in the circumferential direction, and together with the bottom plate 7-6-1 forms a lower shell; the upper baffle 7-6-3 is fixed on the lower surface edge of the top plate 7-6-4 in the circumferential direction, and together with the top plate 7-6-4 forms an upper shell; the top end and the bottom end of the vertically arranged center support column 7-6-5 are respectively fixed with the center of the top plate 7-6-4 and the center of the bottom plate 7-6-1, and the upper baffle 7-6-3 and the lower baffle 7-6-2 are spaced apart by a certain distance; the soil covering and pressing mechanism 7-5 is installed below the bottom plate 7-6-1.

[0008] The transmission mechanism 7-2 includes a speed reducer 7-2-1, a shaft coupling 7-2-2, a thrust bearing 7-2-4, a thrust bearing mounting sleeve 7-2-5, a drive shaft 7-2-6, a drive gear locking ring 7-2-7, a drive gear 7-2-8, a transmission gear 7-2-9, a transmission gear locking ring 7-2-10, a straw pushing rotary disc 7-2-11, a transmission disc 7-2-12, a hollow transmission shaft 7-2-13 and a hollow transmission shaft mounting seat 7-2-14.

[0009] The motor 7-1 and the speed reducer 7-2-1 are fixed on the upper surface of the top plate 7-6-4 through the motor mounting frame; the input end of the speed reducer 7-2-1 is connected with the output end of the motor 7-1, and the output end of the speed reducer 7-2-1 is connected with the drive shaft 7-2-6 through the shaft coupling 7-2-2; the drive shaft 7-2-6 is installed on the top plate 7-6-4 through the thrust bearing 7-2-4 and the thrust bearing mounting sleeve 7-2-5, and the drive shaft 7-2-6 is parallel to and spaced apart from the center support column 7-6-5; the thrust bearing 7-2-4 is installed in the thrust bearing mounting sleeve 7-2-5, and the thrust bearing 7-2-4 is in contact with the shaft shoulder of the drive shaft 7-2-6 to support the rotation of the drive shaft 7-2-6.

[0010] Two hollow transmission shaft mounting seats 7-2-14 are sleeved on the top and bottom of the center support column 7-6-5 and are respectively fixed with the top plate 7-6-4 and the bottom plate 7-6-1; the hollow transmission shaft 7-2-13 is sleeved on the outside of the center support column 7-6-5, and the top end and the bottom end of the hollow transmission shaft 7-2-13 are arranged in the two hollow transmission shaft mounting seats 7-2-14.

[0011] The driving gear 7-2-8 is fixed to the lower part of the driving shaft 7-2-6 by means of a key and a driving gear locking ring 7-2-7; the transmission gear 7-2-9 is fixed to the upper part of the hollow transmission shaft 7-2-13 by means of a key and a transmission gear locking ring 7-2-10, and the transmission gear 7-2-9 is engaged with the driving gear 7-2-8.

[0012] The transmission disc 7-2-12 and the straw poking disc 7-2-11 are horizontally arranged in the middle part of the hollow transmission shaft 7-2-13, and the hollow transmission shaft 7-2-13 passes through the center of the transmission disc 7-2-12 and the straw poking disc 7-2-11; wherein the transmission disc 7-2-12 is welded on the hollow transmission shaft 7-2-13, and the straw poking disc 7-2-11 is fixed to the transmission disc 7-2-12 by means of bolts and nuts.

[0013] The straw poking disc 7-2-11 is uniformly provided with a plurality of groups of guide holes along the circumference thereof; each group of guide holes is provided with a straw poking mechanism 7-4; and the plurality of straw poking mechanisms 7-4 are uniformly distributed around the soil covering and pressing mechanism 7-5.

[0014] The track 7-3 is a circular ring with ups and downs, which is composed of a low horizontal section 7-3-1, an ascending section 7-3-2, a high horizontal section 7-3-3 and a descending section 7-3-4; wherein the bottom of the low horizontal section 7-3-1 is fixed to the upper surface of the bottom plate 7-6-1, and the high horizontal section 7-3-3 is fixed to the bottom plate 7-6-1 by means of a track support plate; and during operation, the high horizontal section 7-3-3 is located close to one side of the drip irrigation belt; the edges of the upper baffle 7-6-3 and the lower baffle 7-6-2 have ups and downs corresponding to the track 7-3.

[0015] The straw poking mechanism 7-4 comprises a "U"-shaped transmission yoke 7-4-1, a clamping plate 7-4-2, a "Z"-shaped poking rod 7-4-3, a rolling bearing 7-4-4 and a spring poking tooth 7-4-6; the "U"-shaped transmission yoke 7-4-1 has two vertical parts and a horizontal part fixed to the bottom ends of the two vertical parts; the "Z"-shaped poking rod 7-4-3 has an upper horizontal part, a lower horizontal part and a vertical part connected between the upper horizontal part and the lower horizontal part; the two vertical parts of the "U"-shaped transmission yoke 7-4-1 are inserted into a group of guide holes of the straw poking disc 7-2-11, and the horizontal part of the "U"-shaped transmission yoke 7-4-1 is fixed perpendicularly to the upper horizontal part of the "Z"-shaped poking rod 7-4-3 by means of the two clamping plates 7-4-2; the rolling bearing 7-4-4 is installed on the upper horizontal part of the "Z"-shaped poking rod 7-4-3 by means of a steel wire retainer ring 7-4-5, and is embedded in the track groove of the track 7-3; the upper horizontal part of the "Z"-shaped poking rod 7-4-3 extends outward from between the upper baffle 7-6-3 and the lower baffle 7-6-2; and the spring poking tooth 7-4-6 is fixed to the lower horizontal part of the "Z"-shaped poking rod 7-4-3.

[0016] With the rotation of the hollow transmission shaft 7-2-13, the straw poking rotary disc 7-2-11 drives the multiple straw poking mechanisms 7-4 rotating, the rolling bearing 7-4-4 rotates along the track 7-3, and the straw poking mechanism 7-4 makes low horizontal, rising, high horizontal and descending movements in the track 7-3 with ups and downs; when the straw poking mechanism moves to the low horizontal section 7-3-1, the spring poking teeth 7-4-6 move the straw from the wide row straw area to the narrow row cleaning area; the starting position of the rising section 7-3-2 corresponds to the edge of the seed furrow, the straw poking mechanism 7-4 makes rotating rising movement in the rising section 7-3-2, avoiding the spring poking teeth 7-4-6 scratching the seed furrow; the straw poking mechanism 7-4 gradually separates from the straw in the rising process, avoiding the straw following the seeder; the high horizontal section 7-3-3 connects between the rising section 7-3-2 and the descending section 7-3-4, so that the straw poking mechanism 7-4 smoothly converts between the rising movement and the descending movement; the straw poking mechanism 7-4 makes rotating descending movement in the descending section 7-3-4, and moves the straw from the wide row straw area to the narrow row cleaning area again after descending to the low horizontal section 7-3-1.

[0017] The number of teeth of the transmission gear 7-2-9 is 27, the number of teeth of the driving gear 7-2-8 is 13, and the transmission ratio is 0.48.

[0018] The straw poking rotary disc 7-2-11 is uniformly provided with six groups of guide holes in the circumferential direction.

[0019] The hollow transmission shaft 7-2-13 is provided with a friction nylon sleeve 7-2-15 between the hollow transmission shaft 7-2-13 and the hollow transmission shaft mounting seat 7-2-14.

[0020] The outer side of the thrust bearing mounting sleeve 7-2-5 is provided with a dustproof end cover 7-2-3.

[0021] The radius of the straw poking rotary disc 7-2-11 is greater than the radius of the transmission disc 7-2-12.

[0022] The soil covering and pressing mechanism 7-5 includes a soil covering and pressing wheel 7-5-1, a soil covering and pressing wheel mounting frame 7-5-2 and a soil covering and pressing wheel mounting sleeve 7-5-3; the top end of the soil covering and pressing wheel mounting frame 7-5-2 is fixed on the bottom plate 7-6-1 by bolts, and a pair of soil covering and pressing wheels 7-5-1 are mounted at the lower end of the soil covering and pressing wheel mounting frame 7-5-2 through the sleeve 7-5-3.

[0023] Two groups of rotary track type drip irrigation no-tillage seeding straw cleaning and returning devices 7 are respectively installed at the rear ends of the two seeding units of the drip irrigation no-tillage seeder through the connecting device 6.

[0024] The connecting device 6 includes a connecting seat 6-1, a spring pull rod 6-2, a spring baffle 6-3, a spring 6-4, a spring mounting bracket 6-5 and a device connecting plate 6-6; the connecting seat 6-1 is fixedly connected to the lower surface of the rear end of the single machine frame 9; the top end of the spring pull rod 6-2 is hingedly connected to the connecting seat 6-1 through a bolt, and the bottom end is fixedly connected to the spring mounting bracket 6-5; the spring 6-4 is mounted on the spring pull rod 6-2, the upper end of the spring 6-4 is in contact with the spring baffle 6-3 arranged on the upper part of the spring pull rod 6-2, and the lower end is in contact with the spring mounting bracket 6-5; the spring mounting bracket 6-5 is fixedly connected to the middle part of the two device connecting plates 6-6; the rear part of the two device connecting plates 6-6 forms a circular clasp, and the upper shell of the rotary rail type drip irrigation no-tillage seeding and straw cleaning and returning device 7 is tightly connected; the front end of the two device connecting plates 6-6 is hingedly connected to the rear end of the seeding device 5 through a bolt and a nut.

[0025] Compared with the prior art, the beneficial effects of the present application are that:

[0026] 1、The present application can return the straw to the seeding belt after seeding, which can prevent the drip irrigation belt from being blown away by the wind and reduce the soil water evaporation to improve the utilization rate of water and fertilizer.

[0027] 2、The present application sets up a high-low undulating rotary rail, which can complete the straw cleaning and returning function in the drip irrigation area and minimize the disturbance to the soil.

[0028] 3、The present application combines the straw cleaning and returning structure with the soil covering and pressing mechanism, which can complete the straw cleaning and returning operation and improve the soil covering and pressing effect. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic view of the rotary rail type drip irrigation no-tillage seeding and straw cleaning and returning device of the present application installed on a drip irrigation no-tillage seeding machine;

[0030] Figure 2 It is a schematic view of the connection between the rotary rail type drip irrigation no-tillage seeding and straw cleaning and returning device of the present application and the seeding single machine;

[0031] Figure 3 It is a structural schematic view of the rotary rail type drip irrigation no-tillage seeding and straw cleaning and returning device 7 of the present application;

[0032] Figure 4 It is a sectional view of Figure 3 ;

[0033] Figure 5 It is a schematic view of the internal structure of the rotary rail type drip irrigation no-tillage seeding and straw cleaning and returning device 7 of the present application;

[0034] Figure 6 It is a structural schematic view of the straw pushing mechanism 7-4;

[0035] Figure 7 Structure diagram of the soil covering and pressing mechanism 7-5;

[0036] Figure 8 Structure diagram of the connecting device 6.

[0037] The reference signs in the drawings are:

[0038] 1 drip irrigation tape mounting frame 2 drip irrigation tape furrow opener

[0039] 3 machine frame 4 straw cleaning device

[0040] 5 seeding device

[0041] 6 connecting device

[0042] 6-1 connecting seat 6-2 spring pull rod

[0043] 6-3 spring baffle 6-4 spring

[0044] 6-5 spring mounting frame 6-6 device connecting plate

[0045] 7 rotary track type drip irrigation no-tillage seeding straw cleaning and covering device

[0046] 7-1 motor

[0047] 7-2 transmission mechanism

[0048] 7-2-1 speed reducer 7-2-2 coupling

[0049] 7-2-3 dustproof end cover 7-2-4 thrust bearing

[0050] 7-2-5 thrust bearing mounting sleeve 7-2-6 drive shaft

[0051] 7-2-7 drive gear locking baffle 7-2-8 drive gear

[0052] 7-2-9 transmission gear 7-2-10 transmission gear locking baffle

[0053] 7-2-11 straw pushing turntable 7-2-12 transmission disc

[0054] 7-2-13 hollow transmission shaft 7-2-14 hollow transmission shaft mounting seat

[0055] 7-2-15 friction nylon sleeve

[0056] 7-3 track

[0057] 7-3-1 low level section 7-3-2 rising section

[0058] 7-3-3 high level section 7-3-4 descending section

[0059] 7-4 straw pulling mechanism

[0060] 7-4-1 "U" shaped transmission puller 7-4-2 clamping plate

[0061] 7-4-3 "Z" shaped pull rod 7-4-4 rolling bearing

[0062] 7-4-5 steel wire retainer 7-4-6 spring pull tooth

[0063] 7-5 soil covering and pressing mechanism

[0064] 7-5-1 soil covering and pressing wheel 7-5-2 soil covering and pressing wheel mounting frame

[0065] 7-5-3 soil covering and pressing wheel mounting sleeve

[0066] 7-6 support and protection mechanism

[0067] 7-6-1 bottom plate 7-6-2 lower baffle

[0068] 7-6-3 upper baffle 7-6-4 top plate

[0069] 7-6-5 center support column

[0070] 8 depth limiting wheel 9 single unit frame DETAILED DESCRIPTION

[0071] The application will be further described below in conjunction with the drawings and examples.

[0072] The application provides a rotary rail type drip irrigation no-tillage seeding straw cleaning and covering device 7, two groups of rotary rail type drip irrigation no-tillage seeding straw cleaning and covering devices 7 are respectively installed at the rear ends of two seeding single units of a drip irrigation no-tillage seeding machine through a connecting device 6, as shown in Figure 1 and Figure 2 The drip irrigation no-tillage seeding machine comprises a frame 3, and a drip irrigation belt mounting frame 1, a drip irrigation belt furrow opener 2 and two seeding single units installed on the frame 3; the seeding single unit comprises a single unit frame 9, and a straw cleaning device 4, a seeding device 5 and a depth limiting wheel 8 installed on the single unit frame 9; the front end of the single unit frame 9 is installed on the frame 3 through a four-bar linkage mechanism.

[0073] The drip irrigation belt mounting frame 1 is used for placing a drip irrigation belt roll, and stably releasing the drip irrigation belt before seeding; the drip irrigation belt furrow opener 2 is used for opening a drip irrigation belt laying furrow to prevent the drip irrigation belt from rolling with the wind; the straw cleaning device 4 is used for cleaning the straw within the seeding belt, so as to facilitate subsequent seeding operation; the seeding device 5 is used for opening a seed furrow and uniformly seeding the seeds into the seed furrow; the rotary rail type drip irrigation seeding straw cleaning and covering device 7 is used for covering the straw cleaned by the straw cleaning device 4, so that the straw is uniformly covered within the seeding belt.

[0074] AsFigure 3 As shown in the drawings, the rotary rail type drip irrigation no-tillage seeding and straw cleaning and returning device 7 comprises a motor 7-1, a transmission mechanism 7-2, a rail 7-3, a straw poking mechanism 7-4, a soil covering and compacting mechanism 7-5, and a support and protection mechanism 7-6.

[0075] As shown in the drawings, Figure 4 and Figure 5 As shown in the drawings, the support and protection mechanism 7-6 comprises a bottom plate 7-6-1, a lower baffle 7-6-2, an upper baffle 7-6-3, a top plate 7-6-4, and a central support column 7-6-5. The bottom plate 7-6-1 and the top plate 7-6-4 are circular; the lower baffle 7-6-2 is fixedly connected to the upper edge of the bottom plate 7-6-1 in the circumferential direction, and together with the bottom plate 7-6-1 forms a lower housing; the upper baffle 7-6-3 is fixedly connected to the lower edge of the top plate 7-6-4 in the circumferential direction, and together with the top plate 7-6-4 forms an upper housing; the top end and the bottom end of the vertically arranged central support column 7-6-5 are fixedly connected to the center of the top plate 7-6-4 and the center of the bottom plate 7-6-1, respectively, and the upper baffle 7-6-3 of the upper housing is spaced a certain distance from the lower baffle 7-6-2 of the lower housing; the soil covering and compacting mechanism 7-5 is installed below the bottom plate 7-6-1.

[0076] As shown in the drawings, Figure 4 The transmission mechanism 7-2 comprises a speed reducer 7-2-1, a shaft coupling 7-2-2, a thrust bearing 7-2-4, a thrust bearing mounting sleeve 7-2-5, a drive shaft 7-2-6, a drive gear locking baffle 7-2-7, a drive gear 7-2-8, a transmission gear 7-2-9, a transmission gear locking baffle 7-2-10, a straw poking rotary disc 7-2-11, a transmission disc 7-2-12, a hollow transmission shaft 7-2-13, and a hollow transmission shaft mounting seat 7-2-14.

[0077] The motor 7-1 and the speed reducer 7-2-1 are fixedly connected to the upper surface of the top plate 7-6-4 by a motor mounting bracket; the input end of the speed reducer 7-2-1 is connected to the output end of the motor 7-1, and the output end of the speed reducer 7-2-1 is connected to the drive shaft 7-2-6 through the shaft coupling 7-2-2; the drive shaft 7-2-6 is installed on the top plate 7-6-4 through the thrust bearing 7-2-4 and the thrust bearing mounting sleeve 7-2-5, and the drive shaft 7-2-6 is parallel to and spaced a certain distance from the central support column 7-6-5; the thrust bearing 7-2-4 is installed in the thrust bearing mounting sleeve 7-2-5, and the thrust bearing 7-2-4 is in contact with the shaft shoulder of the drive shaft 7-2-6 to support the rotation of the drive shaft 7-2-6.

[0078] Two hollow transmission shaft mounting seats 7-2-14 are sleeved on the top and bottom of the center support column 7-6-5 and are fixedly connected with the top plate 7-6-4 and the bottom plate 7-6-1 respectively; the hollow transmission shaft 7-2-13 is sleeved on the outside of the center support column 7-6-5, and the top end and the bottom end of the hollow transmission shaft 7-2-13 are arranged in the two hollow transmission shaft mounting seats 7-2-14.

[0079] The driving gear 7-2-8 is fixedly connected with the lower part of the driving shaft 7-2-6 through a flat key and a driving gear locking ring 7-2-7; the transmission gear 7-2-9 is fixedly connected with the upper part of the hollow transmission shaft 7-2-13 through a flat key and a transmission gear locking ring 7-2-10, and the transmission gear 7-2-9 is in mesh with the driving gear 7-2-8.

[0080] Preferably, the number of teeth of the transmission gear 7-2-9 is 27, the number of teeth of the driving gear 7-2-8 is 13, and the transmission ratio is 0.48.

[0081] The transmission disc 7-2-12 and the straw poking rotary disc 7-2-11 are horizontally arranged in the middle part of the hollow transmission shaft 7-2-13, and the hollow transmission shaft 7-2-13 passes through the centers of the transmission disc 7-2-12 and the straw poking rotary disc 7-2-11; wherein the transmission disc 7-2-12 is welded on the hollow transmission shaft 7-2-13, and the straw poking rotary disc 7-2-11 is fixedly connected with the transmission disc 7-2-12 through a bolt and a nut. The design of the detachable straw poking rotary disc 7-2-11 facilitates the installation of the straw poking mechanism 7-4, and facilitates the replacement of the transmission disc 7-2-12 when the straw poking mechanism 7-4 causes serious wear to the transmission disc 7-2-12.

[0082] The radius of the straw poking rotary disc 7-2-11 is greater than the radius of the transmission disc 7-2-12. A plurality of groups of guide holes are uniformly arranged on the straw poking rotary disc 7-2-11 in the circumferential direction; each group of guide holes is provided with one straw poking mechanism 7-4; and a plurality of straw poking mechanisms 7-4 are uniformly distributed in the circumferential direction around the covering and pressing mechanism 7-5.

[0083] Preferably, six groups of guide holes are uniformly arranged on the straw poking rotary disc 7-2-11 in the circumferential direction.

[0084] Preferably, a friction nylon sleeve 7-2-15 is arranged between the hollow transmission shaft 7-2-13 and the hollow transmission shaft mounting seat 7-2-14, so as to avoid wear between the hollow transmission shaft 7-2-13 and the hollow transmission shaft mounting seat 7-2-14 and prolong the service life.

[0085] Preferably, a dustproof end cover 7-2-3 is arranged on the outside of the thrust bearing mounting sleeve 7-2-5, so as to prevent dust or other sundries from entering.

[0086] As Figure 5As shown, the track 7-3 is a circular ring with high and low undulations, which is composed of low horizontal section 7-3-1, rising section 7-3-2, high horizontal section 7-3-3 and falling section 7-3-4. The bottom of the low horizontal section 7-3-1 is fixed on the upper surface of the bottom plate 7-6-1, and the high horizontal section 7-3-3 is fixed with the bottom plate 7-6-1 through a track support plate. The high horizontal section 7-3-3 is located near the side of the drip irrigation belt during operation. The edges of the upper baffle 7-6-3 and the lower baffle 7-6-2 have corresponding high and low undulations of the track 7-3.

[0087] As shown in the figure, Figure 6 As shown, the straw poking mechanism 7-4 includes a "U"-shaped transmission yoke 7-4-1, a clamping plate 7-4-2, a "Z"-shaped poking rod 7-4-3, a rolling bearing 7-4-4 and a spring poking tooth 7-4-6. The "U"-shaped transmission yoke 7-4-1 has two vertical parts and a horizontal part fixed at the bottom of the two vertical parts. The "Z"-shaped poking rod 7-4-3 has an upper horizontal part, a lower horizontal part and a vertical part connected between the upper horizontal part and the lower horizontal part. The two vertical parts of the "U"-shaped transmission yoke 7-4-1 are inserted into a group of guide holes of the straw poking turntable 7-2-11, and the horizontal part of the "U"-shaped transmission yoke 7-4-1 is vertically fixed with the upper horizontal part of the "Z"-shaped poking rod 7-4-3 through two clamping plates 7-4-2. The rolling bearing 7-4-4 is installed on the upper horizontal part of the "Z"-shaped poking rod 7-4-3 through a steel wire retainer 7-4-5 and is embedded in the track groove of the track 7-3. The upper horizontal part of the "Z"-shaped poking rod 7-4-3 extends outward from between the upper baffle 7-6-3 and the lower baffle 7-6-2. The spring poking tooth 7-4-6 is fixed on the lower horizontal part of the "Z"-shaped poking rod 7-4-3. With the rotation of the hollow transmission shaft 7-2-13, the straw poking turntable 7-2-11 drives the multiple straw poking mechanisms 7-4 thereon to rotate, and the rolling bearing 7-4-4 rotates along the track 7-3. The straw poking mechanism 7-4 makes low-level horizontal, rising, high-level horizontal and falling movements in a cycle according to the high and low undulations of the track 7-3 while rotating. When the straw poking mechanism moves to the low horizontal section 7-3-1, the spring poking tooth 7-4-6 pokes the straw from the wide-row straw area to the narrow-row cleaning area. The starting position of the rising section 7-3-2 corresponds to the edge of the seed furrow, and the straw poking mechanism 7-4 makes a rotating upward movement on the rising section 7-3-2 to avoid scratching the seed furrow by the spring poking tooth 7-4-6. The straw poking mechanism 7-4 gradually separates from the straw during the rising process to avoid the straw following the seeder forward. The high horizontal section 7-3-3 connects between the rising section 7-3-2 and the falling section 7-3-4 to smoothly convert the straw poking mechanism 7-4 between the upward movement and the downward movement. The straw poking mechanism 7-4 makes a rotating downward movement on the falling section 7-3-4 and pokes the straw again from the wide-row straw area to the narrow-row cleaning area after falling to the low horizontal section 7-3-1.

[0088] As Figure 4 , Figure 5 and Figure 7 shown, the soil covering and rolling mechanism 7-5 includes soil covering and rolling wheel 7-5-1, soil covering and rolling wheel mounting frame 7-5-2 and soil covering and rolling wheel mounting sleeve 7-5-3. The top end of the soil covering and rolling wheel mounting frame 7-5-2 is bolted to the bottom plate 7-6-1, and a pair of soil covering and rolling wheels 7-5-1 are mounted on the lower end of the soil covering and rolling wheel mounting frame 7-5-2 through the sleeve 7-5-3.

[0089] As Figure 8 shown, the connecting device 6 includes connecting seat 6-1, spring pull rod 6-2, spring stop plate 6-3, spring 6-4, spring mounting frame 6-5 and device connecting plate 6-6. The connecting seat 6-1 is fixed to the lower surface of the rear end of the single machine frame 9; the top end of the spring pull rod 6-2 is hinged to the connecting seat 6-1 by bolts, and the bottom end is fixed to the spring mounting frame 6-5; the spring 6-4 is installed on the spring pull rod 6-2, the upper end of the spring 6-4 is in contact with the spring stop plate 6-3 provided on the upper part of the spring pull rod 6-2, and the lower end is in contact with the spring mounting frame 6-5. The spring mounting frame 6-5 is fixed to the middle part of the two device connecting plates 6-6; the rear part of the two device connecting plates 6-6 forms a circular clasp, which tightly connects the upper shell of the rotary rail type drip irrigation no-tillage seeding and straw cleaning and covering device 7; the front end of the two device connecting plates 6-6 is hinged to the rear end of the seeding device 5 by bolts and nuts.

[0090] The working process of the present application is as follows:

[0091] The straw cleaning and returning device of the rotary rail drip irrigation no-tillage seeding device is suitable for wide-narrow-row no-tillage operation and is installed behind the no-tillage seeding unit. After the front no-tillage seeding unit completes the narrow-row straw cleaning and seeding operation, the straw cleaning and returning device of the rotary rail drip irrigation no-tillage seeding device can complete the straw returning and drip irrigation belt operation. During operation, the covering and pressing mechanism 7-5 covers and completes the pressing work of the seed furrow; the straw poking mechanism 7-4 makes rotary and fluctuation movement, and returns part of the straw in the wide row to the narrow row. The movement of the straw poking mechanism 7-4 mainly consists of low-position horizontal rotary movement, upward rotary movement, high-position horizontal rotary movement and downward rotary movement. When the straw poking mechanism 7-4 makes low-position horizontal rotary movement, the spring poking tooth 7-4-6 pokes part of the straw in the wide row to move to the narrow row. When the straw poking mechanism makes upward movement, the spring poking tooth gradually separates from the straw, the straw makes deceleration movement to the rear, and finally covers in the narrow row. When the straw poking mechanism makes high-position horizontal rotary movement, the spring poking tooth 7-4-6 completely separates from the straw. When the straw poking mechanism 7-4 makes downward rotary movement, the spring poking tooth 7-4-6 does not contact the straw. The device can effectively return part of the straw in the wide row to the narrow row, improve the surface straw coverage rate and reduce soil water evaporation. The starting position of the upward section 7-3-2 of the rail 7-3 corresponds to the edge of the seed furrow. When the straw poking mechanism 7-4 moves to the seed furrow, it starts to make upward movement, so as to avoid damage to the seed furrow after covering and pressing.

Claims

1. A rotary rail type drip irrigation no-tillage seeding straw cleaning and returning device (7), characterized in that, The rotary rail type drip irrigation no-tillage seeding straw cleaning and covering device (7) is used for returning and covering the straw on the drip irrigation belt after the drip irrigation belt is laid and seeding is completed; the rotary rail type drip irrigation no-tillage seeding straw cleaning and covering device (7) comprises a motor (7-1), a transmission mechanism (7-2), a rail (7-3), a straw cleaning mechanism (7-4), a soil covering and rolling mechanism (7-5) and a support protection mechanism (7-6); The support protection mechanism (7-6) comprises a bottom plate (7-6-1), a lower baffle (7-6-2), an upper baffle (7-6-3), a top plate (7-6-4) and a central support column (7-6-5); the bottom plate (7-6-1) and the top plate (7-6-4) are circular; the lower baffle (7-6-2) is fixedly connected to the upper edge of the bottom plate (7-6-1) in the circumferential direction and forms a lower housing together with the bottom plate (7-6-1); the upper baffle (7-6-3) is fixedly connected to the lower edge of the top plate (7-6-4) in the circumferential direction and forms an upper housing together with the top plate (7-6-4); the top end and the bottom end of the vertically arranged central support column (7-6-5) are fixedly connected to the center of the top plate (7-6-4) and the center of the bottom plate (7-6-1) respectively and keep a certain distance between the upper baffle (7-6-3) and the lower baffle (7-6-2); the soil covering and rolling mechanism (7-5) is installed below the bottom plate (7-6-1); The transmission mechanism (7-2) comprises a speed reducer (7-2-1), a shaft coupling (7-2-2), a thrust bearing (7-2-4), a thrust bearing mounting sleeve (7-2-5), a driving shaft (7-2-6), a driving gear locking baffle (7-2-7), a driving gear (7-2-8), a transmission gear (7-2-9), a transmission gear locking baffle (7-2-10), a straw cleaning rotary disc (7-2-11), a transmission disc (7-2-12), a hollow transmission shaft (7-2-13) and a hollow transmission shaft mounting seat (7-2-14); The motor (7-1) and the speed reducer (7-2-1) are fixedly connected to the upper surface of the top plate (7-6-4) through a motor mounting frame; the input end of the speed reducer (7-2-1) is connected to the output end of the motor (7-1) and the output end of the speed reducer (7-2-1) is connected to the driving shaft (7-2-6) through the shaft coupling (7-2-2); the driving shaft (7-2-6) is installed on the top plate (7-6-4) through the thrust bearing (7-2-4) and the thrust bearing mounting sleeve (7-2-5) and is parallel to and spaced apart from the central support column (7-6-5); the thrust bearing (7-2-4) is installed in the thrust bearing mounting sleeve (7-2-5) and is in contact with the shaft shoulder of the driving shaft (7-2-6) to support the rotation of the driving shaft (7-2-6); Two hollow transmission shaft mounting seats (7-2-14) are sleeved on the top and bottom of the center support column (7-6-5) and are fixedly connected with the top plate (7-6-4) and the bottom plate (7-6-1) respectively; the hollow transmission shaft (7-2-13) is sleeved outside the center support column (7-6-5), and the top end and the bottom end of the hollow transmission shaft (7-2-13) are arranged in the two hollow transmission shaft mounting seats (7-2-14); The driving gear (7-2-8) is fixedly connected with the lower part of the driving shaft (7-2-6) through a key and a driving gear locking retainer (7-2-7); the transmission gear (7-2-9) is fixedly connected with the upper part of the hollow transmission shaft (7-2-13) through a key and a transmission gear locking retainer (7-2-10), and the transmission gear (7-2-9) is in mesh with the driving gear (7-2-8); The transmission disc (7-2-12) and the straw poking rotary disc (7-2-11) are horizontally arranged in the middle part of the hollow transmission shaft (7-2-13), and the hollow transmission shaft (7-2-13) penetrates the centers of the transmission disc (7-2-12) and the straw poking rotary disc (7-2-11); wherein the transmission disc (7-2-12) is welded on the hollow transmission shaft (7-2-13), and the straw poking rotary disc (7-2-11) is fixedly connected with the transmission disc (7-2-12); A plurality of groups of guide holes are uniformly arranged on the straw poking rotary disc (7-2-11) in the circumferential direction; one straw poking mechanism (7-4) is arranged in each group of guide holes; and the plurality of straw poking mechanisms (7-4) are uniformly distributed in the circumferential direction around the soil covering and pressing mechanism (7-5); The track (7-3) is a circular ring with ups and downs, which is composed of a low horizontal section (7-3-1), a rising section (7-3-2), a high horizontal section (7-3-3) and a falling section (7-3-4); wherein the bottom of the low horizontal section (7-3-1) is fixedly connected to the upper surface of the bottom plate (7-6-1), and the high horizontal section (7-3-3) is fixedly connected to the bottom plate (7-6-1) through a track support plate; the high horizontal section (7-3-3) is located on the side close to the drip irrigation belt during operation; and the edges of the upper baffle (7-6-3) and the lower baffle (7-6-2) have ups and downs corresponding to the track (7-3). The straw poking mechanism (7-4) comprises a "U"-shaped transmission yoke (7-4-1), a clamping plate (7-4-2), a "Z"-shaped poking rod (7-4-3), a rolling bearing (7-4-4) and a spring poking tooth (7-4-6); the "U"-shaped transmission yoke (7-4-1) has two vertical parts and a horizontal part fixed at the bottom ends of the two vertical parts; the "Z"-shaped poking rod (7-4-3) has an upper horizontal part, a lower horizontal part and a vertical part connected between the upper horizontal part and the lower horizontal part; the two vertical parts of the "U"-shaped transmission yoke (7-4-1) are inserted into a group of guide holes of the straw poking rotating disc (7-2-11), and the horizontal part of the "U"-shaped transmission yoke (7-4-1) is vertically fixed with the upper horizontal part of the "Z"-shaped poking rod (7-4-3) through the two clamping plates (7-4-2); the rolling bearing (7-4-4) is installed on the upper horizontal part of the "Z"-shaped poking rod (7-4-3) through a steel wire retainer (7-4-5) and is embedded into a track groove of the track (7-3); the upper horizontal part of the "Z"-shaped poking rod (7-4-3) extends outward between the upper baffle (7-6-3) and the lower baffle (7-6-2); and the spring poking tooth (7-4-6) is fixed to the lower horizontal part of the "Z"-shaped poking rod (7-4-3).

2. The rotary track drip irrigation no till seeding straw cleaning and returning device (7) according to claim 1, characterized in that, With the rotation of the hollow transmission shaft (7-2-13), the straw poking rotating disc (7-2-11) drives the plurality of straw poking mechanisms (7-4) thereon to rotate, the rolling bearing (7-4-4) rotates along the track (7-3), and the straw poking mechanism (7-4) cyclically moves in a low horizontal position, an upward movement, a high horizontal position and a downward movement along the ups and downs of the track (7-3); when the straw poking mechanism moves to the low horizontal section (7-3-1), the spring poking tooth (7-4-6) pokes the straw from the wide row straw area to the narrow row cleaning area; the starting position of the upward section (7-3-2) corresponds to the edge of the seed furrow, the straw poking mechanism (7-4) rotates upward in the upward section (7-3-2) to avoid the spring poking tooth (7-4-6) scratching the seed furrow; the straw poking mechanism (7-4) gradually separates from the straw during the upward movement to avoid the straw following the seed drill; the high horizontal section (7-3-3) is connected between the upward section (7-3-2) and the downward section (7-3-4) to smoothly switch between the upward movement and the downward movement of the straw poking mechanism (7-4); the straw poking mechanism (7-4) rotates downward in the downward section (7-3-4) and pokes the straw from the wide row straw area to the narrow row cleaning area again after descending to the low horizontal section (7-3-1).

3. The device (7) according to claim 1, characterized in that, The number of teeth of the transmission gear (7-2-9) is 27, the number of teeth of the driving gear (7-2-8) is 13, and the transmission ratio is 0.

48.

4. The device (7) according to claim 1, characterized in that, Six groups of guide holes are uniformly arranged on the straw poking rotating disc (7-2-11) along the circumferential direction thereof.

5. The device (7) according to claim 1, characterized in that, A friction nylon sleeve (7-2-15) is arranged between the hollow transmission shaft (7-2-13) and the hollow transmission shaft mounting seat (7-2-14).

6. The device (7) according to claim 1, characterized in that, A dustproof end cover (7-2-3) is arranged on the outer side of the thrust bearing mounting sleeve (7-2-5).

7. The device (7) according to claim 1, characterized in that, The radius of the straw dial (7-2-11) is greater than the radius of the transmission disc (7-2-12).

8. The device (7) according to claim 1, characterized in that, The soil covering and pressing mechanism (7-5) comprises soil covering and pressing wheels (7-5-1), a soil covering and pressing wheel mounting frame (7-5-2) and a soil covering and pressing wheel mounting sleeve (7-5-3); the top end of the soil covering and pressing wheel mounting frame (7-5-2) is fixedly connected to the bottom plate (7-6-1), and a pair of soil covering and pressing wheels (7-5-1) are mounted at the lower end of the soil covering and pressing wheel mounting frame (7-5-2) through the sleeve (7-5-3).

9. The device (7) according to claim 1, characterized in that, The two groups of rotary rail type drip irrigation no-tillage seeding straw cleaning and returning devices (7) are respectively installed at the rear ends of the two seeding units of the drip irrigation no-tillage seeding machine through the connecting devices (6).

10. The rotary track drip irrigation no till seeding straw cleaning and returning device (7) according to claim 9, characterized in that, The connecting device (6) comprises a connecting seat (6-1), a spring pull rod (6-2), a spring baffle (6-3), a spring (6-4), a spring mounting frame (6-5) and a device connecting plate (6-6); the connecting seat (6-1) is fixedly connected to the lower surface of the rear end of the unit frame (9); the top end of the spring pull rod (6-2) is hingedly connected to the connecting seat (6-1), and the bottom end is fixedly connected to the spring mounting frame (6-5); the spring (6-4) is mounted on the spring pull rod (6-2), the upper end of the spring (6-4) is in contact with the spring baffle (6-3) arranged on the upper part of the spring pull rod (6-2), and the lower end is in contact with the spring mounting frame (6-5); the spring mounting frame (6-5) is fixedly connected to the middle part of the two device connecting plates (6-6); the rear part of the two device connecting plates (6-6) forms a circular clasp, which tightly connects the upper shell of the rotary rail type drip irrigation no-tillage seeding straw cleaning and returning device (7); the front end of the two device connecting plates (6-6) is hingedly connected to the rear end of the seeding device (5).

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