Summer green manure planting method and device for realizing nitrogenous fertilizer application reduction of winter wheat in Shajiang black soil

Abstract

The invention relates to the field of agricultural instruments, in particular to a summer green manure planting method and device for reducing nitrogenous fertilizer application of winter wheat in Shajiang black soil, which comprises a rotary tillage frame, a rotary tillage roller is rotatably connected between the lower ends of two vertical sections of the rotary tillage frame, the rotary tillage roller is fixedly connected with a rotary tillage gear, and the middle of the rotary tillage roller is hollow. A turning frame roller is fixedly erected in the middle of the rotary tillage roller, the rotary tillage roller and the turning frame roller are provided with a plurality of sets of rotary tillage turning devices in the axial direction, a plurality of rotary tillage tool bits distributed in the circumferential direction of the rotary tillage roller are installed on the rotary tillage turning devices, and a pulling mechanism for pulling the rotary tillage turning devices is arranged in the middle of the rotary tillage roller. According to the shajiang black soil rotary tillage device, the depth of the rotary tillage blade screwed into the shajiang black soil during ploughing can be adjusted, meanwhile, the angle of the rotary tillage blade during ploughing can be adjusted, the shajiang black soil is smashed more comprehensively, and therefore application of winter wheat nitrogen fertilizer in the shajiang black soil is reduced, and meanwhile summer green manure and the shajiang black soil can be mixed more evenly.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, in particular to a summer green manure planting method and a device for reducing nitrogen fertilizer application of winter wheat in sandy ginger black soil. Background Art

[0002] Summer green manure has the function of promoting cost savings and efficiency improvement of crops, and improving quality and efficiency. The humus and small molecular organic matter formed after the fresh green manure is turned over quickly participate in the mineralization process of soil organic matter. Therefore, the processing of summer green manure plays an important role in the growth of crops.

[0003] Since summer green manure has a more developed root system, the length of the rotary tillage blades used for tilling land in traditional rotary tillers cannot be adjusted, which means that the rotary tiller can only till at a fixed depth. However, the crops grown in different regions are different, and the soil types are also different, so the required tillage depths are also different. When traditional rotary tillers are used to cultivate crops in different regions, their versatility is insufficient. At the same time, the angle of the rotary tillage blades of traditional rotary tillers cannot be adjusted, so the width of the cultivated land of a single rotary tillage blade will remain unchanged, and it cannot be adjusted according to the softness or hardness of the sand ginger black soil, which may cause the quality of the cultivated land to decline. It is difficult to mix it evenly with the sand ginger black soil using traditional rotary tillage methods, which reduces soil fertility and fails to achieve the desired effect, so that winter wheat will need to apply too much nitrogen fertilizer in the future to meet growth requirements. Summary of the invention

[0004] The present invention provides a summer green manure planting method and device for reducing nitrogen fertilizer application for winter wheat in sandy black soil, which can adjust the depth of a rotary tillage blade rotating into the sandy black soil when tilling the land and the angle of the rotary tillage blade when tilling the land.

[0005] The present invention provides a device for reducing nitrogen fertilizer application in winter wheat on sandy ginger black soil, comprising a rotary tillage frame, the rotary tillage frame being in a U-shape with a return opening facing downward, a gearbox being fixedly installed at the middle lower end of a horizontal section of the rotary tillage frame, an input shaft being connected to the front end of the gearbox, an output shaft being connected to the left side of the gearbox, the output shaft passing through one side of the rotary tillage frame being fixedly connected to a driving gear, a linkage gear meshing with the driving gear being rotatably connected to the lower end of the driving gear on the rotary tillage frame, a rotary tillage gear being meshed at the lower end of the linkage gear, and a row gear being fixedly connected to the lower ends of the two vertical ends of the rotary tillage frame. The front end of the moving support plate is tilted, and the front end of the rotary tillage frame is fixedly connected to a lifting frame, a rotary tillage roller is rotatably connected between the lower ends of the two vertical sections of the rotary tillage frame, and the rotary tillage roller is fixedly connected to the rotary tillage gear. The middle of the rotary tillage roller is hollow, and a direction-changing mounting roller is fixedly mounted in the middle position of the rotary tillage roller. The rotary tillage roller and the direction-changing mounting roller are axially provided with multiple groups of rotary tillage changing devices, and the rotary tillage changing device is equipped with multiple rotary tillage blades distributed along the circumference of the rotary tillage roller, and a pulling mechanism for pulling the rotary tillage changing device is arranged in the middle of the rotary tillage roller.

[0006] Preferably, the rotary tillage direction changing device includes a pulling block, a pulling rod, a direction changing plate and a fixed plate. A plurality of groups of direction changing grooves are axially arranged on the rotary tillage roller, and a direction changing plate is rotatably connected in each group of direction changing grooves. A fixed plate is installed on the direction changing plate, and a rotary tillage blade head is fixedly installed on the fixed plate. The direction changing erection rod is slidably connected with a pulling block, and a pulling rod is arranged between the pulling block and the direction changing plate. The pulling rod is composed of rod members which slide with each other at both ends. The fixed section of the pulling rod is hinged to the pulling block, and the telescopic section of the pulling rod is fixedly connected to the direction changing plate. The pulling block is slidably sleeved on the direction changing erection roller.

[0007] Preferably, the pulling blocks in the rotary tillage changing device are distributed on the left and right sides of the changing plate, and the two pulling blocks are spaced apart from each other by the changing plate connected by the pulling rod, and the installation directions of the rotary tillage heads installed on the fixed plates on adjacent changing plates are opposite.

[0008] Preferably, the pulling mechanism includes a pulling gear ring, a pulling gear and a pulling screw, the pulling gear ring is rotatably connected to the left side of the rotary tillage roller, a plurality of pulling gears are meshed inside the pulling gear ring, the pulling gears are evenly distributed circumferentially, the pulling gear is rotatably connected to the rotary tillage roller, a pulling screw is fixedly connected to the pulling gear, the left and right ends of the pulling screw are rotatably mounted on the rotary tillage roller, the pulling screw passes through the pulling block and is provided with threads with opposite rotation directions at positions contacting the pulling blocks on the left and right sides, and a first locking mechanism is connected to the outer pulling gear ring.

[0009] Preferably, the first locking mechanism includes a locking disk, a locking plate and a locking screw, the locking disk is fixedly connected to the outer side of the pulling gear ring, the rotary roller is provided with a locking groove at a position corresponding to the locking disk, the locking groove is slidably connected with a plurality of locking sliders, the locking plate is rotatably connected with a locking screw corresponding to the locking slider, and the locking screw is threadedly connected to the locking slider.

[0010] Preferably, a cutter head adjustment mechanism is provided on the direction-changing erection roller, and the cutter head adjustment mechanism includes an adjusting transmission rod, a transmission bevel gear, an adjusting bevel gear, a linkage rod, a transmission universal joint, a telescopic rod and an adjusting screw. The direction-changing erection roller is provided with a gear mounting groove at a position corresponding to the rotary tillage direction-changing device, and an adjusting sliding groove is provided in the direction-changing turning plate. A fixed plate is slidably connected in the adjusting sliding groove, and an end of the fixed plate close to the direction-changing erection roller is threadedly connected with an adjusting screw, and the adjusting screw is threadedly connected to the direction-changing turning plate, and an end of the adjusting screw close to the direction-changing erection roller is fixedly connected with a telescopic rod, and the telescopic rod It is composed of two rods that slide against each other, the other end of the telescopic rod is fixedly connected with a transmission universal joint, the other end of the transmission universal joint is fixedly connected with a linkage rod, the linkage rod is rotatably mounted on the position of the corresponding gear mounting slot on the direction changing erection roller, the other end of the linkage rod is fixedly connected with an adjusting bevel gear, the toothed end of the adjusting bevel gear is meshed with a transmission bevel gear, the transmission bevel gear is coaxially fixedly connected with an adjusting transmission rod, the adjusting transmission rod is rotatably connected to the inside of the direction changing erection roller, the adjusting transmission rod corresponds to the direction changing turn plate one by one, and a synchronous linkage mechanism is arranged at the left end of the direction changing erection roller.

[0011] Preferably, the synchronous linkage mechanism includes a linkage main gear and a linkage sub-gear, a linkage installation groove is opened at the left end of the direction changing erection roller, the middle position of the linkage installation groove is rotatably connected with a linkage main gear, the edge of the linkage main gear is meshed with a linkage sub-gear, the linkage sub-gear is fixedly connected to the adjusting transmission rod, and the linkage main gear passes through the left end of the direction changing erection roller and is connected to a second locking mechanism.

[0012] Preferably, the second locking mechanism includes a locking block, a locking ring, a locking rod and a locking spring of variable shapes, the locking block is fixedly connected to the linked main gear, the locking ring is fixedly connected to the left end of the direction-changing erection roller and is sleeved on the outside of the locking block, a radial sliding groove is circumferentially opened on the locking block, a locking rod is slidably connected in the radial sliding groove, a locking spring is fixedly connected between the locking rod and the bottom surface of the locking groove, the left end of the locking rod is in the shape of a slope, and a plurality of notches that engage with the locking rod are circumferentially opened on the locking ring.

[0013] Preferably, the fixing plate is provided with two fixing grooves, the rotary tiller head is passed through the fixing grooves by bolts, and the fixing plate and the rotary tiller head are fixed by nuts.

[0014] The present invention also provides a summer green manure planting method for reducing nitrogen fertilizer application for winter wheat in Shajiang black soil, using the above-mentioned device for reducing nitrogen fertilizer application for winter wheat in Shajiang black soil, the method comprises the following steps: S1. During rotary tillage of sand ginger black soil, the rotary tiller is mounted on a tractor through a lifting frame, and the input shaft is connected to the power output shaft of the tractor through a universal joint to rotate the rotary tillage gear; S2, the rotary tillage gear drives the rotary tillage roller to rotate, and the rotary tillage roller drives the rotary tillage blade thereon to rotary till the sand ginger black soil, and at the same time, the summer green manure is added to the sand ginger black soil, and the sand ginger black soil and the summer green manure are crushed and mixed by the rotation of the rotary tillage blade; S3. The rotary tillage blade head is driven to change direction by the rotary tillage direction changing device, thereby changing the angle of the rotary tillage blade head.

[0015] The beneficial effects of the present invention are:

[0016] (1) The present invention drives the rotary tillage direction-changing device through a pulling mechanism, and drives the rotary tillage blade to change direction through the rotary tillage direction-changing device, so that it is suitable for sand ginger black soil with various hardness.

[0017] (2) The present invention enables the rotary tillage blade to produce a shearing effect during the tillage process by making the rotary tillage blade head deflect in the opposite direction, thereby making the sand ginger black soil more finely divided.

[0018] (3) The present invention changes the length of the rotary tillage cutter head that extends into the sand ginger black soil during rotary tillage of the sand ginger black soil through the cutter head adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement in the middle; Figure 3 It is a schematic diagram of the internal structure of the rotary tillage roller in the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at B in the middle; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at C in the middle; Figure 6 For the present invention Figure 3 A magnified schematic diagram of the structure at D in the middle; Figure 7 For the present invention Figure 3 The enlarged schematic diagram of the structure at E in the middle; Figure 8 It is a schematic diagram of the installation structure of the direction-changing rotating plate and the fixed plate in the present invention.

[0021] In the figure: 1. rotary tillage frame; 11. gearbox; 111. input shaft; 112. output shaft; 12. driving gear; 13. linkage gear; 14. rotary tillage gear; 15. travel support plate; 16. lifting frame; 2. rotary tillage roller; 21. direction-changing groove; 22. locking groove; 3. direction-changing erection roller; 31. gear mounting groove; 32. linkage mounting groove; 4. rotary tillage direction-changing device; 41. pulling block; 42. pulling rod; 43. direction-changing plate; 431. adjusting sliding groove; 44. fixing plate; 441. fixing groove; 5. rotary tillage blade; 6. pulling mechanism; 61. pulling gear ring; 62. Pulling gear; 63, pulling screw; 64, first locking mechanism; 641, locking disk; 642, locking plate; 643, locking screw; 644, locking slide block; 7, cutter head adjustment mechanism; 71, adjusting transmission rod; 72, transmission bevel gear; 73, adjusting bevel gear; 74, linkage rod; 75, transmission universal joint; 76, telescopic rod; 77, adjusting screw; 8, synchronous linkage mechanism; 81, linkage main gear; 82, linkage sub-gear; 9, second locking mechanism; 91, locking block; 911, radial sliding groove; 92, locking ring; 93, locking rod; 94, locking spring. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] like Figure 1 and Figure 3As shown, the present invention provides a device for reducing nitrogen fertilizer application in winter wheat on sand ginger black soil, comprising a rotary tillage frame 1, the rotary tillage frame 1 is in a U-shape with the return opening facing downward, a gearbox 11 is fixedly installed at the lower end of the middle of the horizontal section of the rotary tillage frame 1, the front end of the gearbox 11 is connected to an input shaft 111, the left side of the gearbox 11 is connected to an output shaft 112, the output shaft 112 passes through one side of the rotary tillage frame 1 and is fixedly connected to a driving gear 12, the rotary tillage frame 1 is rotatably connected to a linkage gear 13 meshing with the driving gear 12 at the lower end of the driving gear 12, the lower end of the linkage gear 13 is meshed with a rotary tillage gear 14, and the lower ends of the two vertical ends of the rotary tillage frame 1 A traveling support plate 15 is fixedly connected, and the front end of the traveling support plate 15 is in a tilted shape. A lifting frame 16 is fixedly connected to the front end of the rotary tilling frame 1. A rotary tilling roller 2 is rotatably connected between the lower ends of the two vertical sections of the rotary tilling frame 1. The rotary tilling roller 2 is fixedly connected to the rotary tilling gear 14. The middle of the rotary tilling roller 2 is hollow. A direction-changing mounting roller 3 is fixedly mounted in the middle position of the rotary tilling roller 2. The rotary tilling roller 2 and the direction-changing mounting roller 3 are provided with multiple groups of rotary tilling direction-changing devices 4 along the axial direction. The rotary tilling direction-changing device 4 is provided with multiple rotary tilling blades 5 distributed circumferentially along the rotary tilling roller 2. A pulling mechanism 6 for pulling the rotary tilling direction-changing device 4 is provided in the middle of the rotary tilling roller 2.

[0024] It should be noted that in the process of rotary tillage of the loam black soil, the rotary tiller is mounted on the tractor through the lifting frame 16, and the input shaft 111 is connected to the power output shaft of the tractor through a universal joint. Then the output shaft 112 on the gearbox 11 outputs power to the drive gear 12 to rotate the drive gear 12, and the drive gear 12 drives the linkage gear 13 to rotate, and the linkage gear 13 drives the rotary tillage gear 14 to rotate, and the rotary tillage gear 14 drives the rotary tillage roller 2 to rotate, and the rotary tillage roller 2 drives the rotary tillage cutter head 5 thereon to rotary till the loam black soil. In order to be suitable for loam black soil of various hardness, the rotary tillage changing device 4 can be driven by the pulling mechanism 6, and the rotary tillage changing device 4 can drive the rotary tillage cutter head 5 to change direction, so that it is suitable for loam black soil of various hardness.

[0025] like Figure 3 and Figure 4As shown, the rotary tillage direction changing device 4 includes a pulling block 41, a pulling rod 42, a direction changing plate 43 and a fixed plate 44. A plurality of groups of direction changing grooves 21 are axially opened on the rotary tillage roller 2. A direction changing plate 43 is rotatably connected in each group of direction changing grooves 21. A fixed plate 44 is installed on the direction changing plate 43. A rotary tillage blade 5 is fixedly installed on the fixed plate 44. The direction changing erection rod is slidably connected with the pulling block 41. A pulling rod 42 is arranged between the pulling block 41 and the direction changing plate 43. The pulling rod 42 is composed of rod members that slide with each other at both ends. The fixed section of the pulling rod 42 is hinged to the pulling block 41. The telescopic section of the pulling rod 42 is fixedly connected to the direction changing plate 43. The pulling block 41 is slidably sleeved on the direction changing erection roller 3.

[0026] It should be noted that in the process of adjusting the angle of the rotary tiller head 5 through the rotary tillage changing device 4, the pulling block 41 is driven by the pulling mechanism 6 to slide along the changing direction setting roller 3, and the pulling block 41 drives the changing direction turn plate 43 to rotate through the pulling rod 42, thereby changing the angle of the rotary tiller head 5.

[0027] like Figure 4 As shown, the pulling blocks 41 in the rotary tillage direction changing device 4 are distributed on the left and right sides of the direction changing turn plate 43, and the two pulling blocks 41 are spaced apart from each other through the direction changing turn plate 43 connected by the pulling rod 42, and the installation directions of the rotary tillage heads 5 installed on the fixed plates 44 on the adjacent direction changing turn plates 43 are opposite.

[0028] It should be noted that, through the above-mentioned setting, the rotary tillage blade can produce a shearing effect during the tillage process, so that the sand ginger black soil can be more finely divided by rotary tillage.

[0029] like Figure 2 , Figure 3 and Figure 4 As shown, the pulling mechanism 6 includes a pulling gear ring 61, a pulling gear 62 and a pulling screw 63. The pulling gear ring 61 is rotatably connected to the left side of the rotary roller 2. A plurality of pulling gears 62 are meshed inside the pulling gear ring 61. The pulling gears 62 are evenly distributed circumferentially. The pulling gears 62 are rotatably connected to the rotary roller 2. A pulling screw 63 is fixedly connected to the pulling gear 62. The left and right ends of the pulling screw 63 are rotatably mounted on the rotary roller 2. The pulling screw 63 passes through the pulling block 41 and is provided with threads with opposite rotation directions at positions contacting the pulling blocks 41 on the left and right sides. A first locking mechanism 64 is connected to the outer pulling gear ring 61.

[0030] It should be noted that when adjusting the pulling mechanism 6, the pulling gear 62 is driven to rotate by rotating the pulling ring gear 61, and the pulling gear 62 drives the pulling screw 63 to rotate. The pulling screw 63 drives the pulling block 41 to move axially along the changing direction of the setting roller 3, and the threads with opposite rotation directions can make the pulling blocks 41 on both sides of the changing direction turn plate 43 move in opposite directions, thereby making the rotary tillage blades produce a staggered effect.

[0031] like Figure 2 As shown, the first locking mechanism 64 includes a locking disk 641, a locking plate 642 and a locking screw 643. The locking disk 641 is fixedly connected to the outer side of the pulling gear ring 61. The rotary roller 2 is provided with a locking groove 22 at a position corresponding to the locking disk 641. The locking groove 22 is slidably connected with a plurality of locking sliders 644. The locking plate 642 is rotatably connected with a locking screw 643 corresponding to the locking slider 644. The locking screw 643 is threadedly connected with the locking slider 644.

[0032] It should be noted that after completing the adjustment process of the angle of the rotary tiller head 5, the direction of the rotary tiller head 5 needs to be fixed. By rotating the locking screw 643, the locking screw 643 is threadedly connected to the locking slider 644, and the locking slider 644 is pressed tightly against the left side wall of the locking groove 22, so that the locking disk 641 cannot rotate, and then the pulling screw 63 cannot rotate, so that the direction of the rotary tiller head 5 is fixed.

[0033] like Figure 4 , Figure 5 and Figure 8As shown, a cutter head adjustment mechanism 7 is provided on the direction-changing erection roller 3, and the cutter head adjustment mechanism 7 includes an adjustment transmission rod 71, a transmission bevel gear 72, an adjustment bevel gear 73, a linkage rod 74, a transmission universal joint 75, a telescopic rod 76 and an adjustment screw 77. The direction-changing erection roller 3 is provided with a gear mounting groove 31 at a position corresponding to the rotary tillage direction-changing device 4, and an adjustment sliding groove 431 is provided in the direction-changing turning plate 43. A fixed plate 44 is slidably connected in the adjustment sliding groove 431, and an end of the fixed plate 44 close to the direction-changing erection roller 3 is threadedly connected with an adjustment screw 77, and the adjustment screw 77 is threadedly connected to the direction-changing turning plate 43, and an end of the adjustment screw 77 close to the direction-changing erection roller 3 is fixedly connected with a telescopic rod 76. The telescopic rod 76 is composed of two rods that slide against each other. The other end of the telescopic rod 76 is fixedly connected to a transmission universal joint 75. The other end of the transmission universal joint 75 is fixedly connected to a linkage rod 74. The linkage rod 74 is rotatably mounted on the position of the gear mounting groove 31 on the direction changing erection roller 3. The other end of the linkage rod 74 is fixedly connected to an adjusting bevel gear 73. The toothed end of the adjusting bevel gear 73 is meshed with a transmission bevel gear 72. The transmission bevel gear 72 is coaxially fixedly connected to an adjusting transmission rod 71. The adjusting transmission rod 71 is rotatably connected to the inside of the direction changing erection roller 3. The adjusting transmission rod 71 corresponds one-to-one to the direction changing turn plate 43. A synchronous linkage mechanism 8 is provided at the left end of the direction changing erection roller 3.

[0034] It should be noted that in order to change the depth of the rotary tillage cutter head 5 into the sand ginger black soil, the rotation of the adjusting transmission rod 71 is driven by rotating the synchronous linkage mechanism 8, the rotation of the adjusting transmission rod 71 drives the rotation of the transmission bevel gear 72, the transmission bevel gear 72 drives the rotation of the adjusting bevel gear 73, the adjusting bevel gear 73 drives the rotation of the linkage rod 74, the linkage rod 74 drives the rotation of the telescopic rod 76 through the transmission universal joint 75, the telescopic rod 76 drives the rotation of the adjusting screw 77, the adjusting screw 77 is threadedly connected to the fixed plate 44, so that the fixed plate 44 and the change-of-direction plate 43 slide, and the length of the rotary tillage cutter head 5 extending into the sand ginger black soil is changed during the process of rotary tillage of the sand ginger black soil.

[0035] like Figure 7 As shown, the synchronous linkage mechanism 8 includes a linkage main gear 81 and a linkage sub-gear 82. A linkage mounting groove 32 is opened at the left end of the direction-changing erection roller 3. The middle position of the linkage mounting groove 32 is rotatably connected with the linkage main gear 81. The edge of the linkage main gear 81 is meshed with a linkage sub-gear 82. The linkage sub-gear 82 is fixedly connected to the adjusting transmission rod 71. The linkage main gear 81 passes through the left end of the direction-changing erection roller 3 and is connected to a second locking mechanism 9.

[0036] It should be noted that in the process of driving the adjustment transmission rod 71 to rotate through the linkage mechanism, the linkage main gear 81 is driven to rotate through the second locking mechanism 9, the linkage main gear 81 drives the linkage sub-gear 82 to rotate, and the linkage sub-gear 82 drives the adjustment transmission rod 71 to rotate. After the adjustment is completed, the linkage main gear 81 is fixed by the second locking mechanism 9.

[0037] like Figure 2 As shown, the second locking mechanism 9 includes a locking block 91, a locking ring 92, a locking rod 93 and a locking spring 94 in various shapes, the locking block 91 is fixedly connected to the linkage main gear 81, the locking ring 92 is fixedly connected to the left end of the direction-changing erection roller 3 and is sleeved on the outside of the locking block 91, a radial sliding groove 911 is circumferentially opened on the locking block 91, a locking rod 93 is slidably connected in the radial sliding groove 911, a locking spring 94 is fixedly connected between the locking rod 93 and the bottom surface of the locking groove 22, the left end of the locking rod 93 is in the shape of a slope, and a plurality of notches that engage with the locking rod 93 are circumferentially opened on the locking ring 92.

[0038] It should be noted that in the process of linking the main gear 81 to rotate through the second locking mechanism 9, the locking block 91 is driven to rotate by the wrench. During this process, the wrench will contact the inclined surface on the locking rod 93, thereby pushing the locking rod 93 to disengage from the notch on the locking ring 92. At the same time, the locking spring 94 is compressed. When the wrench is removed, under the pressure of the locking spring 94, the locking rod 93 will be inserted into the notch on the locking ring 92, thereby fixing the linked main gear 81.

[0039] like Figure 6 As shown, the fixing plate 44 is provided with two fixing grooves 441 , the rotary tiller head 5 is bolted through the fixing grooves 441 , and the fixing plate 44 and the rotary tiller head 5 are fixed by nuts.

[0040] It should be noted that various specifications of rotary tiller heads 5 can be installed by installing the rotary tiller heads 5 through the fixing grooves 441 .

[0041] The present invention also provides a summer green manure planting method for reducing nitrogen fertilizer application for winter wheat in Shajiang black soil. Using the above-mentioned device for reducing nitrogen fertilizer application for winter wheat in Shajiang black soil, the method comprises the following steps: S1. During rotary tillage of sand ginger black soil, the rotary tiller is mounted on a tractor via a lifting frame 16, and the input shaft 111 is connected to the power output shaft of the tractor via a universal joint, so that the rotary tillage gear 14 rotates; S2, the rotary tillage gear 14 drives the rotary tillage roller 2 to rotate, and the rotary tillage roller 2 drives the rotary tillage cutter head 5 thereon to rotary till the sand ginger black soil, and at the same time, the summer green manure is added to the sand ginger black soil, and the sand ginger black soil and the summer green manure are crushed and mixed by the rotation of the rotary tillage cutter head 5; S3. The rotary tillage blade 5 is driven to change direction by the rotary tillage direction changing device 4, thereby changing the angle of the rotary tillage blade 5.

[0042] The working principle of the present invention is that in the process of rotary tillage of sand ginger black soil, the rotary tiller is mounted on the tractor through the lifting frame 16, and the input shaft 111 is connected to the power output shaft of the tractor through the universal joint, and then the output shaft 112 on the gearbox 11 outputs power to the driving gear 12 so that the driving gear 12 rotates, the driving gear 12 drives the rotation of the linkage gear 13, the linkage gear 13 drives the rotation of the rotary tillage gear 14, the rotary tillage gear 14 drives the rotation of the rotary tillage roller 2, and the rotary tillage roller 2 drives the rotary tillage cutter head 5 thereon to rotary till the sand ginger black soil, in order to be suitable for various hardness. The sand ginger black soil can be driven by the pulling mechanism 6 to drive the rotary tillage changing device 4, and the rotary tillage cutting head 5 can be driven to change direction by the rotary tillage changing device 4. In the process of adjusting the angle of the rotary tillage cutting head 5 by the rotary tillage changing device 4, the pulling block 41 is driven by the pulling mechanism 6 to slide along the changing direction setting roller 3, and the pulling block 41 drives the rotation of the changing direction plate 43 through the pulling rod 42, thereby changing the angle of the rotary tillage cutting head 5. When adjusting the pulling mechanism 6, the pulling gear 62 is driven to rotate by rotating the pulling gear ring 61, and the pulling gear 62 drives the rotation of the pulling screw 63, and the pulling screw 63 drives the pulling block 41 The axial movement of the change-direction mounting roller 3 and the threads with opposite rotation directions can make the pulling blocks 41 on both sides of the change-direction rotating plate 43 move in opposite directions, thereby making the rotary tillage blades produce a staggered effect. In order to change the depth of the rotary tillage blade 5 into the sand ginger black soil, the rotation of the adjusting transmission rod 71 is driven by rotating the synchronous linkage mechanism 8, the rotation of the adjusting transmission rod 71 drives the rotation of the transmission bevel gear 72, the transmission bevel gear 72 drives the rotation of the adjusting bevel gear 73, the adjusting bevel gear 73 drives the rotation of the linkage rod 74, the linkage rod 74 drives the rotation of the telescopic rod 76 through the transmission universal joint 75, and the telescopic rod 76 drives The movable adjusting screw 77 is rotated, and the adjusting screw 77 is threadedly connected with the fixing plate 44, so that the fixing plate 44 and the change-of-direction plate 43 slide, thereby changing the length of the rotary tillage head 5 extending into the sand ginger black soil during the rotary tillage of the sand ginger black soil. In the process of driving the adjustment transmission rod 71 to rotate through the linkage mechanism, the linkage main gear 81 is driven to rotate through the second locking mechanism 9, and the linkage main gear 81 drives the linkage sub-gear 82 to rotate, and the linkage sub-gear 82 drives the adjustment transmission rod 71 to rotate. After the adjustment is completed, the linkage main gear 81 is fixed by the second locking mechanism 9.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for reducing nitrogen fertilizer application for winter wheat in sandy black soil, characterized in that: It comprises a rotary tillage frame (1); A rotary tillage roller (2), the rotary tillage roller (2) is rotatably connected between the lower ends of the two vertical sections of the rotary tillage frame (1), and the rotary tillage roller (2) is fixedly connected to the rotary tillage gear (14); The middle of the rotary tillage roller (2) is hollow, a direction-changing mounting roller (3) is fixedly mounted in the middle of the rotary tillage roller (2), and a plurality of rotary tillage direction-changing devices (4) are arranged along the axial direction between the rotary tillage roller (2) and the direction-changing mounting roller (3); A plurality of rotary tillage blades (5) distributed along the circumference of the rotary tillage roller (2) are installed on the rotary tillage direction changing device (4); A pulling mechanism (6) for pulling the rotary tillage direction-changing device (4) is arranged in the middle of the rotary tillage roller (2).

2. The device for reducing nitrogen fertilizer application for winter wheat in sandy black soil according to claim 1, characterized in that: The rotary tillage direction-changing device (4) comprises a pulling block (41), a pulling rod (42), a direction-changing rotating plate (43) and a fixing plate (44); A fixed plate (44) is installed on the direction-changing rotating plate (43), a rotary tiller head (5) is fixedly installed on the fixed plate (44), a pulling block (41) is slidably connected to the direction-changing erection rod, and a pulling rod (42) is arranged between the pulling block (41) and the direction-changing rotating plate (43).

3. The device for reducing nitrogen fertilizer application for winter wheat in sandy black soil according to claim 2, characterized in that: The pulling blocks (41) in the rotary tillage direction-changing device (4) are distributed on the left and right sides of the direction-changing rotating plate (43), and the two pulling blocks (41) are spaced apart from each other on the direction-changing rotating plate (43) connected by the pulling rod (42).

4. The device for reducing nitrogen fertilizer application for winter wheat in sandy black soil according to claim 3, characterized in that: The pulling mechanism (6) comprises a pulling gear ring (61), a pulling gear (62) and a pulling screw (63); a plurality of pulling gears (62) are meshed inside the pulling gear ring (61); a pulling screw (63) is fixedly connected to the pulling gear (62); and a first locking mechanism (64) is connected to the outer pulling gear ring (61).

5. The device for reducing nitrogen fertilizer application for winter wheat in sandy black soil according to claim 4, characterized in that: The first locking mechanism (64) comprises a locking disk (641), a locking plate (642) and a locking screw (643); the locking disk (641) is fixedly connected to the outer side of the pulling gear ring (61); the locking plate (642) is rotatably connected to a locking slider (644); and the locking screw (643) is threadedly connected to the locking slider (644).

6. The device for reducing nitrogen fertilizer application for winter wheat in sandy black soil according to claim 5, characterized in that: A cutter head adjustment mechanism (7) is arranged on the direction-changing erecting roller (3), and the cutter head adjustment mechanism (7) comprises an adjustment transmission rod (71), a transmission bevel gear (72), an adjustment bevel gear (73), a linkage rod (74), a transmission universal joint (75), a telescopic rod (76) and an adjustment screw rod (77); One end of the adjusting screw rod (77) close to the direction-changing erecting roller (3) is fixedly connected to a telescopic rod (76), the other end of the telescopic rod (76) is fixedly connected to a transmission universal joint (75), the other end of the transmission universal joint (75) is fixedly connected to a linkage rod (74), the other end of the linkage rod (74) is fixedly connected to an adjusting bevel gear (73), the toothed end of the adjusting bevel gear (73) is meshed with a transmission bevel gear (72), the transmission bevel gear (72) is coaxially fixedly connected to an adjusting transmission rod (71), and a synchronous linkage mechanism (8) is provided at the left end of the direction-changing erecting roller (3).

7. The device for reducing nitrogen fertilizer application for winter wheat in sandy black soil according to claim 6, characterized in that: The synchronous linkage mechanism (8) comprises a linkage main gear (81) and a linkage sub-gear (82); The edge of the linkage main gear (81) is meshed with a linkage sub-gear (82), the linkage sub-gear (82) is fixedly connected to the adjustment transmission rod (71), and the linkage main gear (81) passes through the left end of the direction-changing erection roller (3) and is connected to a second locking mechanism (9).

8. The device for reducing nitrogen fertilizer application for winter wheat in sandy black soil according to claim 7, characterized in that: The second locking mechanism (9) comprises a locking block (91), a locking ring (92), a locking rod (93) and a locking spring (94); A locking spring (94) is fixedly connected between the locking rod (93) and the bottom surface of the locking groove (22); the left end of the locking rod (93) is in an inclined plane shape; and a plurality of notches for engaging with the locking rod (93) are circumferentially formed on the locking ring (92).

9. The device for reducing nitrogen fertilizer application for winter wheat in sandy black soil according to claim 8, characterized in that: A radial sliding groove (911) is circumferentially formed on the locking block (91), and a locking rod (93) is slidably connected in the radial sliding groove (911).

10. The device for reducing nitrogen fertilizer application for winter wheat in sandy black soil according to claim 2, characterized in that: Two fixing grooves (441) are formed on the fixing plate (44), the rotary tiller head (5) passes through the fixing grooves (441) via bolts, and the fixing plate (44) and the rotary tiller head (5) are fixed via nuts.

11. A summer green manure planting method for reducing nitrogen fertilizer application for winter wheat in Shajiang black soil, using the device for reducing nitrogen fertilizer application for winter wheat in Shajiang black soil according to any one of claims 1 to 10, characterized in that: The method comprises the following steps: S1. During rotary tillage of sand ginger black soil, the rotary tiller is mounted on a tractor via a lifting frame (16), and the input shaft (111) is connected to the power output shaft of the tractor via a universal joint, so that the rotary tillage gear (14) rotates; S2, the rotary tillage gear (14) drives the rotary tillage roller (2) to rotate, and the rotary tillage roller (2) drives the rotary tillage blade (5) thereon to rotary till the sand ginger black soil, and at the same time, the summer green manure is added to the sand ginger black soil, and the sand ginger black soil and the summer green manure are crushed and mixed by the rotation of the rotary tillage blade (5); S3. The rotary tillage blade head (5) is driven to change direction by the rotary tillage direction-changing device (4), thereby changing the angle of the rotary tillage blade head (5).

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