Rotary rail type drip irrigation no-tillage seeding straw cleaning and recycling device

Abstract

The invention relates to a rotating rail type drip irrigation no-tillage seeding straw cleaning and returning device. The rotating rail type drip irrigation no-tillage seeding straw cleaning and returning device comprises a motor, a transmission mechanism, a rail, a straw pulling mechanism, an earthing and pressing mechanism and a supporting and protecting mechanism. The track is a circular ring which fluctuates up and down, and the circular ring is composed of a low horizontal section, an ascending section, a high horizontal section and a descending section. After the drip irrigation belt is laid and sowed, straw is pulled back to cover the drip irrigation belt, water evaporation is reduced, the utilization efficiency of water and fertilizer is improved, and water saving and efficiency increasing are achieved; the rotary rail type straw recovering mechanism is adopted to do rotary fluctuating motion, and when the rotary rail type straw recovering mechanism moves to a sowing row, the straw recovering mechanism does rising rotary motion, so that disturbance to sown seeds can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery and relates to a rotary track type drip irrigation no-tillage sowing straw cleaning and returning device. Background Art

[0002] No-till seeding technology refers to the technology of directly sowing the next crop without tilling the land after the previous crop is harvested. When performing no-till seeding in drip irrigation areas, the straw in the drip irrigation and sowing areas should be cleaned first, and then the seeds should be sown and drip irrigation tapes should be laid in the clean areas after cleaning. After sowing, the seeds should be covered with soil and pressed down. After the drip irrigation tapes are laid, part of the straw should be covered on the drip irrigation tapes to prevent the drip irrigation tapes from being blown away by the wind and to reduce water evaporation. When covering the straw and covering with soil to suppress the sown seeds, it is necessary to avoid disturbing the sown seeds.

[0003] Currently, the existing no-tillage sowing straw cleaning devices on the market are mostly used for straw cleaning before and during sowing. In drip irrigation areas, the straw needs to be covered after sowing to prevent the laid drip irrigation belt from being blown away by the wind. At the same time, the straw covering the drip irrigation belt can reduce water evaporation. At present, there is no report on covering the straw after no-tillage sowing straw cleaning in drip irrigation areas. Summary of the invention

[0004] In view of the above technical problems, the purpose of the present invention is to provide a rotary track drip irrigation no-till sowing straw cleaning and returning device, which can realize the straw returning and covering on the drip irrigation tape after the drip irrigation tape is laid and sowing is completed, so as to reduce water evaporation, improve the efficiency of water and fertilizer utilization, save water and increase efficiency; a rotary track straw returning mechanism is adopted to perform a rotating and undulating motion, and when it moves to the sowing row, the straw returning mechanism performs an upward rotating motion, which can avoid disturbing the seeds after sowing.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A rotary track type drip irrigation no-tillage sowing straw cleaning and returning device 7 is used to return the straw to cover the drip irrigation belt after the drip irrigation belt is laid and sowing is completed; the rotary track type drip irrigation no-tillage sowing straw cleaning and returning device 7 includes a motor 7-1, a transmission mechanism 7-2, a track 7-3, a straw-moving mechanism 7-4, a soil covering and suppressing mechanism 7-5 and a supporting and protecting mechanism 7-6.

[0007] The supporting and protecting mechanism 7-6 comprises a bottom plate 7-6-1, a lower baffle plate 7-6-2, an upper baffle plate 7-6-3, a top plate 7-6-4 and a central supporting column 7-6-5; the bottom plate 7-6-1 and the top plate 7-6-4 are circular; the lower baffle plate 7-6-2 is circumferentially fixed to the upper surface edge of the bottom plate 7-6-1, and together with the bottom plate 7-6-1 constitutes a lower shell; the upper baffle plate 7-6-3 is circumferentially fixed to the lower surface edge of the top plate 7-6-4, and together with the top plate 7-6-4 constitutes an upper shell; the top and bottom ends of the vertically arranged central supporting column 7-6-5 are respectively fixed to the center of the circle of the top plate 7-6-4 and the center of the circle of the bottom plate 7-6-1, and a certain distance is spaced between the upper baffle plate 7-6-3 and the lower baffle plate 7-6-2; the soil covering and suppressing mechanism 7-5 is installed below the bottom plate 7-6-1.

[0008] The transmission mechanism 7-2 includes a reducer 7-2-1, a 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 retaining ring 7-2-7, a drive gear 7-2-8, a transmission gear 7-2-9, a transmission gear locking retaining ring 7-2-10, a straw removing turntable 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 reducer 7-2-1 are fixedly connected to the upper surface of the top plate 7-6-4 through the motor mounting frame; the input end of the reducer 7-2-1 is connected to the output end of the motor 7-1, and the output end of the reducer 7-2-1 is connected to the drive shaft 7-2-6 through the 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 the central support column 7-6-5 and spaced a certain distance apart; the thrust bearing 7-2-4 is installed in the thrust bearing mounting sleeve 7-2-5, and the thrust bearing 7-2-4 contacts with the 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 mounted on the top and bottom of the central support column 7-6-5 and are fixedly connected to the top plate 7-6-4 and the bottom plate 7-6-1 respectively; the hollow transmission shaft 7-2-13 is mounted on the outside of the central support column 7-6-5, and the top and bottom ends of the hollow transmission shaft 7-2-13 are placed in the two hollow transmission shaft mounting seats 7-2-14.

[0011] The driving gear 7-2-8 is fixedly connected to 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 to 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 meshed with the driving gear 7-2-8.

[0012] The transmission disc 7-2-12 and the straw-pushing disc 7-2-11 are horizontally arranged in the middle 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-pushing disc 7-2-11; wherein, the transmission disc 7-2-12 is welded on the hollow transmission shaft 7-2-13, and the straw-pushing disc 7-2-11 is fixedly connected to the transmission disc 7-2-12 by bolts and nuts.

[0013] The straw-pushing turntable 7-2-11 is evenly provided with a plurality of guide holes along its circumference; a straw-pushing mechanism 7-4 is correspondingly installed in each guide hole; and a plurality of straw-pushing mechanisms 7-4 are evenly distributed around the soil covering and suppressing mechanism 7-5.

[0014] The track 7-3 is a circular ring with ups and downs, which consists of four parts: a low level section 7-3-1, an ascending section 7-3-2, a high level section 7-3-3 and a descending section 7-3-4. The bottom of the low level section 7-3-1 is fixed to the upper surface of the bottom plate 7-6-1, and the high level section 7-3-3 is fixed to the bottom plate 7-6-1 through a track support plate; when in operation, the high level section 7-3-3 is located on the side close to 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-moving mechanism 7-4 includes a "U"-shaped transmission fork 7-4-1, a clamping plate 7-4-2, a "Z"-shaped lever 7-4-3, a rolling bearing 7-4-4 and a spring tooth 7-4-6; the "U"-shaped transmission fork 7-4-1 has two vertical parts and a horizontal part fixed to the bottom ends of the two vertical parts; the "Z"-shaped lever 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 fork 7-4-1 are inserted into the straw-moving turntable 7-2-11 In a group of guide holes, the horizontal part of the "U"-shaped transmission fork 7-4-1 is vertically fixed to the upper horizontal part of the "Z"-shaped lever 7-4-2 through two clamping plates 7-4-2; the rolling bearing 7-4-4 is installed on the upper horizontal part of the "Z"-shaped lever 7-4-3 through a wire retaining ring 7-4-5, and embedded in the track groove of the track 7-3; the upper horizontal part of the "Z"-shaped lever 7-4-3 extends outward from between the upper baffle plate 7-6-3 and the lower baffle plate 7-6-2; the spring shift tooth 7-4-6 is fixed to the lower horizontal part of the "Z"-shaped lever 7-4-3.

[0016] As the hollow transmission shaft 7-2-13 rotates, the straw-pushing turntable 7-2-11 drives the multiple straw-pushing mechanisms 7-4 thereon to rotate, and the rolling bearing 7-4-4 rotates along the track 7-3. While rotating, the straw-pushing mechanisms 7-4 perform low-level, rising, high-level, and falling movements in a structural cycle with the ups and downs of the track 7-3; when the straw-pushing mechanisms move to the low-level section 7-3-1, the spring-pushing teeth 7-4-6 push 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-pushing mechanism The mechanism 7-4 performs a rotational ascending motion in the ascending section 7-3-2 to prevent the spring teeth 7-4-6 from scratching the seed furrow; during the ascending process, the straw-pushing mechanism 7-4 gradually separates from the straw to prevent the straw from moving forward with the seeder; the ascending section 7-3-2 and the descending section 7-3-4 are connected by the high level section 7-3-3, so that the straw-pushing mechanism 7-4 can smoothly switch between the ascending motion and the descending motion; the straw-pushing mechanism 7-4 performs a rotational descending motion in the descending section 7-3-4, and after descending to the low level section 7-3-1, the straw is again moved from the wide row straw area to the narrow row cleaning area.

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

[0018] The straw removing turntable 7-2-11 is evenly provided with six groups of guide holes along its circumference.

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

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

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

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

[0023] Two sets of rotary track drip irrigation no-tillage sowing straw cleaning and returning devices 7 are respectively installed at the rear ends of two sowing units of the drip irrigation no-tillage sowing machine through connecting devices 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 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 single 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 contacts with the spring baffle 6-3 arranged on the upper part of the spring pull rod 6-2, and the lower end contacts 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 parts of the two device connecting plates 6-6 form a circular snap ring to fasten the upper shell of the rotary track drip irrigation no-tillage sowing straw cleaning and returning device 7; the front ends of the two device connecting plates 6-6 are hinged to the rear end of the sowing device 5 by bolts and nuts.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention can return the straw to the sowing belt after sowing, which can not only prevent the drip irrigation belt from being blown away by the wind, but also reduce the evaporation of soil moisture and improve the utilization rate of water and fertilizer.

[0027] 2. The present invention is provided with an undulating rotating track, which can complete the straw cleaning and recovery function in the drip irrigation area while minimizing the disturbance to the soil.

[0028] 3. The present invention combines the straw cleaning and recovery structure with the soil covering and suppression mechanism, which can not only complete the straw cleaning and recovery operation but also improve the soil covering and suppression effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the rotary track type drip irrigation no-tillage sowing straw cleaning and recovery device of the present invention installed on the drip irrigation no-tillage sowing machine;

[0030] Figure 2 It is a schematic diagram of the connection between the rotary track drip irrigation no-tillage sowing straw cleaning and recovery device and the sowing unit of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the rotary track drip irrigation no-tillage sowing straw cleaning and recovery device 7 of the present invention;

[0032] Figure 4 for Figure 3 A cross-sectional view of

[0033] Figure 5 It is a schematic diagram of the internal structure of the rotary track drip irrigation no-tillage sowing straw cleaning and recovery device 7 of the present invention;

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

[0035] Figure 7 It is a structural schematic diagram of the soil covering and suppressing mechanism 7-5;

[0036] Figure 8 It is a schematic structural diagram of the connecting device 6.

[0037] The accompanying drawings are marked as follows:

[0038] 1. Drip irrigation belt installation frame 2. Drip irrigation belt trencher

[0039] 3 racks 4 straw cleaning device

[0040] 5. Seeding device

[0041] 6Connection 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 drip irrigation no-till seeding straw cleaning and recovery device

[0046] 7-1 Motor

[0047] 7-2 Transmission mechanism

[0048] 7-2-1 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 ring 7-2-8 Drive gear

[0052] 7-2-9 Transmission gear 7-2-10 Transmission gear locking ring

[0053] 7-2-11 straw 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 fork 7-4-2 splint

[0061] 7-4-3 "Z" lever 7-4-4 rolling bearing

[0062] 7-4-5 Wire Retaining Ring 7-4-6 Spring Tooth

[0063] 7-5 Earth covering and suppression mechanism

[0064] 7-5-1 Soil Covering and Suppression Wheel 7-5-2 Soil Covering and Suppression Wheel Mounting Frame

[0065] 7-5-3 Soil Covering Press Wheel Installation 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 wheels 9 single frame DETAILED DESCRIPTION

[0071] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0072] The present invention provides a rotary track drip irrigation no-tillage sowing straw cleaning and recovery device 7. Two sets of rotary track drip irrigation no-tillage sowing straw cleaning and recovery devices 7 are respectively installed at the rear ends of two sowing units of the drip irrigation no-tillage sowing machine through connecting devices 6. Figure 1 and Figure 2 The drip irrigation no-tillage seeder comprises a frame 3, a drip irrigation belt mounting frame 1, a drip irrigation belt furrow opener 2 and two sowing units installed on the frame 3; the sowing unit comprises a single frame 9, a straw cleaning device 4, a sowing device 5 and a depth limiting wheel 8 installed on the single frame 9; the front end of the single frame 9 is installed on the frame 3 through a four-bar linkage.

[0073] The drip tape mounting frame 1 is used for placing the drip tape roll and stably releasing the drip tape before sowing; the drip tape furrow opener 2 is used for opening a furrow for laying the drip tape to prevent the drip tape from rolling with the wind; the straw cleaning device 4 is used for cleaning the straw within the sowing belt for subsequent sowing operations; the sowing device 5 is used for opening a seed furrow and sowing seeds evenly into the seed furrow; the rotary track drip irrigation sowing straw cleaning and returning device 7 is used for returning the straw cleaned by the straw cleaning device 4 so that the straw is evenly covered in the sowing belt.

[0074] like Figure 3 As shown, the rotary track drip irrigation no-tillage sowing straw cleaning and returning device 7 includes a motor 7-1, a transmission mechanism 7-2, a track 7-3, a straw removing mechanism 7-4, a soil covering and suppressing mechanism 7-5 and a supporting and protecting mechanism 7-6.

[0075] like Figure 4 and Figure 5 As shown, the support and protection mechanism 7-6 includes a bottom plate 7-6-1, a lower baffle plate 7-6-2, an upper baffle plate 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 plate 7-6-2 is fixedly connected to the upper surface edge of the bottom plate 7-6-1 along the circumferential direction, and together with the bottom plate 7-6-1, it forms a lower shell; the upper baffle plate 7-6-3 is fixedly connected to the lower surface edge of the top plate 7-6-4 along the circumferential direction, and together with the top plate 7-6-4, it forms an upper shell; the top and bottom ends 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 a certain distance is spaced between the upper baffle plate 7-6-3 of the upper shell and the lower baffle plate 7-6-2 of the lower shell; the soil covering and suppression mechanism 7-5 is installed below the bottom plate 7-6-1.

[0076] like Figure 4 As shown, the transmission mechanism 7-2 includes a reducer 7-2-1, a 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 removing turntable 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 reducer 7-2-1 are fixedly connected to the upper surface of the top plate 7-6-4 through the motor mounting frame; the input end of the reducer 7-2-1 is connected to the output end of the motor 7-1, and the output end of the reducer 7-2-1 is connected to the drive shaft 7-2-6 through the 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 the central support column 7-6-5 and spaced a certain distance apart; the thrust bearing 7-2-4 is installed in the thrust bearing mounting sleeve 7-2-5, and the thrust bearing 7-2-4 contacts with the 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 mounted on the top and bottom of the central support column 7-6-5 and are fixedly connected to the top plate 7-6-4 and the bottom plate 7-6-1 respectively; the hollow transmission shaft 7-2-13 is mounted on the outside of the central support column 7-6-5, and the top and bottom ends of the hollow transmission shaft 7-2-13 are placed in the two hollow transmission shaft mounting seats 7-2-14.

[0079] The driving gear 7-2-8 is fixedly connected to 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 to 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 meshed with the driving gear 7-2-8.

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

[0081] The transmission disc 7-2-12 and the straw-pushing rotating disc 7-2-11 are horizontally arranged in the middle 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-pushing rotating disc 7-2-11; wherein, the transmission disc 7-2-12 is welded on the hollow transmission shaft 7-2-13, and the straw-pushing rotating disc 7-2-11 is fixedly connected to the transmission disc 7-2-12 by bolts and nuts. The design of the detachable straw-pushing rotating disc 7-2-11 is convenient for installing the straw-pushing mechanism 7-4, and when the straw-pushing mechanism 7-4 causes serious wear to the transmission disc 7-2-12, it is convenient to replace the transmission disc 7-2-12.

[0082] The radius of the straw-pushing rotating disc 7-2-11 is greater than the radius of the driving disc 7-2-12. The straw-pushing rotating disc 7-2-11 is evenly provided with multiple groups of guide holes along its circumference; each group of guide holes is correspondingly installed with a straw-pushing mechanism 7-4; and multiple straw-pushing mechanisms 7-4 are evenly distributed around the soil covering and suppressing mechanism 7-5.

[0083] Preferably, six groups of guide holes are evenly arranged on the straw removing turntable 7-2-11 along its circumference.

[0084] Preferably, a friction nylon sleeve 7-2-15 is provided between the hollow transmission shaft 7-2-13 and the hollow transmission shaft mounting seat 7-2-14 to prevent the hollow transmission shaft 7-2-13 and the hollow transmission shaft mounting seat 7-2-14 from wear and tear, thereby extending the service life.

[0085] Preferably, a dustproof end cover 7-2-3 is provided on the outer side of the thrust bearing mounting sleeve 7-2-5 to prevent dust or other debris from entering.

[0086] like Figure 5As shown, the track 7-3 is a circular ring with ups and downs, which consists of four parts: a low-level section 7-3-1, an ascending section 7-3-2, a high-level section 7-3-3 and a descending section 7-3-4. The bottom of the low-level section 7-3-1 is fixed to the upper surface of the bottom plate 7-6-1, and the high-level section 7-3-3 is fixed to the bottom plate 7-6-1 through a track support plate; when in operation, the high-level section 7-3-3 is located on the side close to 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.

[0087] like Figure 6 As shown, the straw-moving mechanism 7-4 includes a "U"-shaped transmission fork 7-4-1, a clamping plate 7-4-2, a "Z"-shaped lever 7-4-3, a rolling bearing 7-4-4 and a spring tooth 7-4-6. The "U"-shaped transmission fork 7-4-1 has two vertical parts and a horizontal part fixed to the bottom ends of the two vertical parts; the "Z"-shaped lever 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 fork 7-4-1 are inserted into a group of guide holes in the straw-moving rotating disk 7-2-11, and the horizontal part of the "U"-shaped transmission fork 7-4-1 passes through the two clamping plates 7-4 -2 is vertically fixed to the upper horizontal part of the "Z"-shaped lever 7-4-2; the rolling bearing 7-4-4 is installed on the upper horizontal part of the "Z"-shaped lever 7-4-3 through the wire retaining ring 7-4-5, and embedded in the track groove of the track 7-3; the upper horizontal part of the "Z"-shaped lever 7-4-3 extends outward from between the upper baffle 7-6-3 and the lower baffle 7-6-2; the spring shift tooth 7-4-6 is fixed to the lower horizontal part of the "Z"-shaped lever 7-4-3. As the hollow transmission shaft 7-2-13 rotates, the straw-pushing turntable 7-2-11 drives the multiple straw-pushing mechanisms 7-4 thereon to rotate, and the rolling bearing 7-4-4 rotates along the track 7-3. While rotating, the straw-pushing mechanisms 7-4 perform low-level, rising, high-level, and falling movements in a structural cycle with the ups and downs of the track 7-3; when the straw-pushing mechanisms move to the low-level section 7-3-1, the spring-pushing teeth 7-4-6 push 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-pushing mechanism The mechanism 7-4 performs a rotational ascending motion in the ascending section 7-3-2 to prevent the spring teeth 7-4-6 from scratching the seed furrow; during the ascending process, the straw-pushing mechanism 7-4 gradually separates from the straw to prevent the straw from moving forward with the seeder; the ascending section 7-3-2 and the descending section 7-3-4 are connected by the high level section 7-3-3, so that the straw-pushing mechanism 7-4 can smoothly switch between the ascending motion and the descending motion; the straw-pushing mechanism 7-4 performs a rotational descending motion in the descending section 7-3-4, and after descending to the low level section 7-3-1, the straw is again moved from the wide row straw area to the narrow row cleaning area.

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

[0089] like Figure 8 As shown, 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 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 single 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, and the upper end of the spring 6-4 contacts the spring baffle 6-3 provided on the upper part of the spring pull rod 6-2, and the lower end contacts 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 snap ring to fasten the upper shell of the rotary track drip irrigation no-tillage sowing straw cleaning and returning device 7; the front end of the two device connecting plates 6-6 is hinged to the rear end of the sowing device 5 by bolts and nuts.

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

[0091] The rotary track drip irrigation no-tillage sowing straw cleaning and returning device of the present invention is suitable for wide and narrow row no-tillage operations in drip irrigation areas, and is installed behind the no-tillage sowing unit. After the no-tillage sowing unit in the front completes the narrow row straw cleaning and sowing operations, the rotary track drip irrigation no-tillage sowing straw cleaning and returning device of the present invention can complete the straw returning drip irrigation belt work. During operation, the soil covering and suppression mechanism 7-5 covers the seed furrow and completes the suppression work; the straw shifting mechanism 7-4 performs a rotating and undulating motion to return part of the straw in the wide row to the narrow row. The movement of the straw shifting mechanism 7-4 mainly consists of four parts: low-level horizontal rotational motion, rising rotational motion, high-level horizontal rotational motion, and descending rotational motion. When the straw shifting mechanism 7-4 performs a low-level horizontal rotational motion, the spring shifting teeth 7-4-6 shift part of the straw in the wide row to move toward the narrow row. When the straw shifting mechanism performs an upward motion, the spring shifting teeth gradually separate from the straw, and the straw performs a deceleration motion obliquely to the rear, and finally covers the narrow row. When the straw-pushing mechanism performs a high-level horizontal rotational movement, the spring pulling teeth 7-4-6 are completely separated from the straw. When the straw-pushing mechanism 7-4 performs a downward rotational movement, the spring pulling teeth 7-4-6 do not contact the straw. The present invention can effectively return part of the straw in the wide row to the narrow row, increase the surface straw coverage rate and reduce soil moisture evaporation. The starting position of the rising section 7-3-2 of the track 7-3 corresponds to the edge of the seed ditch. When the straw-pushing mechanism 7-4 moves to the seed ditch, it starts to perform an upward movement to prevent the spring pulling teeth 7-4-6 from damaging the seed ditch after the soil is covered and pressed.

Claims

1. A rotary track drip irrigation no-tillage sowing straw cleaning and recovery device (7), characterized in that: The rotary track type drip irrigation no-tillage sowing straw cleaning and returning device (7) is used to pull the straw back and cover it on the drip irrigation belt after the drip irrigation belt is laid and sowing is completed; the rotary track type drip irrigation no-tillage sowing straw cleaning and returning device (7) comprises a motor (7-1), a transmission mechanism (7-2), a track (7-3), a straw pulling mechanism (7-4), a soil covering and suppressing mechanism (7-5) and a supporting and protecting mechanism (7-6); The supporting and protecting mechanism (7-6) comprises a bottom plate (7-6-1), a lower baffle plate (7-6-2), an upper baffle plate (7-6-3), a top plate (7-6-4) and a central supporting column (7-6-5); the bottom plate (7-6-1) and the top plate (7-6-4) are circular; the lower baffle plate (7-6-2) is fixedly connected to the upper surface edge of the bottom plate (7-6-1) along the circumferential direction, and together with the bottom plate (7-6-1) forms a lower shell; the upper baffle plate (7-6- 3) is fixedly connected to the lower surface edge of the top plate (7-6-4) along the circumferential direction, and together with the top plate (7-6-4) forms an upper shell; the top and bottom ends 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 a certain distance is spaced between the upper baffle plate (7-6-3) and the lower baffle plate (7-6-2); the soil covering and suppressing mechanism (7-5) is installed below the bottom plate (7-6-1); The transmission mechanism (7-2) comprises a reducer (7-2-1), a 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-moving rotating disk (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 reducer (7-2-1) are fixedly connected to the upper surface of the top plate (7-6-4) via a motor mounting frame; the input end of the reducer (7-2-1) is connected to the output end of the motor (7-1), and the output end of the reducer (7-2-1) is connected to the drive shaft (7-2-6) via a coupling (7-2-2); the drive shaft (7-2-6) is installed on the top plate (7-6-4) via a thrust bearing (7-2-4) and a thrust bearing mounting sleeve (7-2-5), and the drive shaft (7-2-6) is parallel to the central support column (7-6-5) and spaced a certain distance apart; the thrust bearing (7-2-4) is installed in the thrust bearing mounting sleeve (7-2-5), and the thrust bearing (7-2-4) contacts the shaft shoulder of the drive shaft (7-2-6) to support the rotation of the drive shaft (7-2-6); Two hollow transmission shaft mounting seats (7-2-14) are sleeved on the top and bottom of the central support column (7-6-5) and are respectively fixed to 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 central support column (7-6-5), and the top and bottom ends of the hollow transmission shaft (7-2-13) are placed in the two hollow transmission shaft mounting seats (7-2-14); The driving gear (7-2-8) is fixedly connected to 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 to 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) and the driving gear (7-2-8) are meshed with each other; The transmission disc (7-2-12) and the straw-pushing rotating disc (7-2-11) are horizontally arranged in the middle 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-pushing rotating disc (7-2-11); wherein the transmission disc (7-2-12) is welded to the hollow transmission shaft (7-2-13), and the straw-pushing rotating disc (7-2-11) is fixedly connected to the transmission disc (7-2-12); The straw-pushing rotating disc (7-2-11) is evenly provided with a plurality of groups of guide holes along its circumference; a straw-pushing mechanism (7-4) is correspondingly installed in each group of guide holes; and the plurality of straw-pushing mechanisms (7-4) are evenly distributed in the circumference around the soil covering and suppressing mechanism (7-5); The track (7-3) is a circular ring with ups and downs, and the circular ring is composed of four parts: a low level section (7-3-1), an ascending section (7-3-2), a high level section (7-3-3) and a descending section (7-3-4), wherein the bottom of the low level section (7-3-1) is fixedly connected to the upper surface of the bottom plate (7-6-1), and the high level section (7-3-3) is fixedly connected to the bottom plate (7-6-1) through a track support plate; during operation, the high level section (7-3-3) is located on a side close to the drip irrigation belt; the edges of the upper baffle (7-6-3) and the lower baffle (7-6-2) have ups and downs structures corresponding to the track (7-3); The straw-moving mechanism (7-4) comprises a "U"-shaped transmission fork (7-4-1), a clamping plate (7-4-2), a "Z"-shaped lever (7-4-3), a rolling bearing (7-4-4) and a spring shifting tooth (7-4-6); the "U"-shaped transmission fork (7-4-1) has two vertical parts and a horizontal part fixed to the bottom ends of the two vertical parts; the "Z"-shaped lever (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 fork (7-4-1) are inserted into a set of In the guide hole, the horizontal part of the "U"-shaped transmission shift fork (7-4-1) is vertically fixedly connected to the upper horizontal part of the "Z"-shaped shift rod (7-4-2) through two clamping plates (7-4-2); the rolling bearing (7-4-4) is installed on the upper horizontal part of the "Z"-shaped shift rod (7-4-3) through a wire retaining ring (7-4-5) and embedded in the track groove of the track (7-3); the upper horizontal part of the "Z"-shaped shift rod (7-4-3) extends outward from between the upper baffle plate (7-6-3) and the lower baffle plate (7-6-2); and the spring shift tooth (7-4-6) is fixedly connected to the lower horizontal part of the "Z"-shaped shift rod (7-4-3).

2. The rotary track drip irrigation no-tillage sowing straw cleaning and recovery device (7) according to claim 1 is characterized in that: As the hollow transmission shaft (7-2-13) rotates, the straw-pushing rotating disk (7-2-11) drives the multiple straw-pushing mechanisms (7-4) thereon to rotate, and the rolling bearing (7-4-4) rotates along the track (7-3). While rotating, the straw-pushing mechanisms (7-4) perform low-level, rising, high-level, and falling movements in a structural cycle with the ups and downs of the track (7-3); when the straw-pushing mechanisms move to the low-level section (7-3-1), the spring-pushing teeth (7-4-6) push 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-pushing mechanisms (7-4) performs a rotational ascending motion in the ascending section (7-3-2) to prevent the spring teeth (7-4-6) from scratching the seed furrow; during the ascending process, the straw-pulling mechanism (7-4) gradually separates from the straw to prevent the straw from moving forward with the seeder; the ascending section (7-3-2) and the descending section (7-3-4) are connected by a high level section (7-3-3) to enable the straw-pulling mechanism (7-4) to smoothly switch between the ascending motion and the descending motion; the straw-pulling mechanism (7-4) performs a rotational descending motion in the descending section (7-3-4), and after descending to the low level section (7-3-1), the straw is again shifted from the wide row straw area to the narrow row cleaning area.

3. The rotary track drip irrigation no-tillage sowing straw cleaning and recovery device (7) according to claim 1 is 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 rotary track drip irrigation no-tillage sowing straw cleaning and recovery device (7) according to claim 1 is characterized in that: The straw-moving rotating disk (7-2-11) is evenly provided with six groups of guide holes along its circumference.

5. The rotary track drip irrigation no-tillage sowing straw cleaning and recovery device (7) according to claim 1 is characterized in that: A friction nylon sleeve (7-2-15) is provided between the hollow transmission shaft (7-2-13) and the hollow transmission shaft mounting seat (7-2-14).

6. The rotary track drip irrigation no-tillage sowing straw cleaning and recovery device (7) according to claim 1 is characterized in that: A dustproof end cover (7-2-3) is provided on the outer side of the thrust bearing mounting sleeve (7-2-5).

7. The rotary track drip irrigation no-tillage sowing straw cleaning and recovery device (7) according to claim 1 is characterized in that: The radius of the straw-moving rotating disk (7-2-11) is greater than the radius of the driving disc (7-2-12).

8. The rotary track drip irrigation no-tillage sowing straw cleaning and recovery device (7) according to claim 1 is characterized in that: The soil covering and suppressing mechanism (7-5) comprises a soil covering and suppressing wheel (7-5-1), a soil covering and suppressing wheel mounting frame (7-5-2) and a soil covering and suppressing wheel mounting sleeve (7-5-3); the top end of the soil covering and suppressing wheel mounting frame (7-5-2) is fixedly connected to the bottom plate (7-6-1), and a pair of soil covering and suppressing wheels (7-5-1) are mounted on the lower end of the soil covering and suppressing wheel mounting frame (7-5-2) via sleeves (7-5-3).

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

10. The rotary track drip irrigation no-tillage sowing straw cleaning and recovery 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 single frame (9); the top end of the spring pull rod (6-2) is hinged 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 installed on the spring pull rod (6-2), The upper end of the spring (6-4) contacts a spring baffle (6-3) provided on the upper part of the spring pull rod (6-2), and the lower end contacts a spring mounting frame (6-5); the spring mounting frame (6-5) is fixedly connected to the middle part of two device connecting plates (6-6); the rear parts of the two device connecting plates (6-6) form a circular clamping ring to fasten the upper shell of the rotary track drip irrigation no-tillage sowing straw cleaning and returning device (7); the front ends of the two device connecting plates (6-6) are hinged to the rear end of the sowing device (5).

Images