Strip type subsurface soil transformation machine tool

Abstract

The invention discloses a strip type subsurface soil transformation machine tool, and relates to the technical field of agricultural soil preparation. The machine tool comprises a main machine frame, an excavating device, a surface soil conveying device, a plough layer soil and fertilizer mixing device, a land wheel device, a combined fertilizer box and a mixed fertilizer applying device. The digging device comprises a shovel surface which is used for lifting surface soil and is obliquely arranged, and the digging device is connected to the bottom of the front end of the main rack; the surface soil conveying device is arranged in the main frame behind the excavating device and is used for receiving and transferring the surface soil backwards; the plough layer soil and fertilizer mixing device is arranged at the bottom of the conveying belt, is connected with the main rack and is used for loosening subsurface soil and uniformly mixing the subsurface soil with mixed fertilizer; the mixed fertilizer applying device is used for conveying the mixed fertilizer. According to the machine tool provided by the invention, subsurface soil can be quickly and effectively transformed under the condition that the sequence of soil layers is not disturbed.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural land preparation, in particular to a strip-type sub-surface soil transformation machine. Background Art

[0002] In agricultural production, long-term shallow tillage causes a lack of organic matter in the subsurface soil at a depth of 20-40cm, resulting in reduced crop yields.

[0003] The existing soil transformation method is to use a manure spreader to spread organic fertilizer on the surface and then use tools such as rotary tillers to mix organic fertilizer with the surface soil, but the soil layer transformation thickness in this way is relatively thin, and can only transform the soil within a depth of 20cm. The soil at a depth of 20-40cm cannot be transformed, and the organic fertilizer is also prone to volatilization in the surface layer. Another transformation method is to use a manure spreader to spread organic fertilizer on the surface, and then use tools such as moldboard plows to deep-plow the 0-20cm surface soil and organic fertilizer to bury the 20-40cm deep layer, but the soil at a depth of 20-40cm is moved to the surface. Although the soil fertility at a depth of 20-40cm is improved, the soil fertility of the surface layer decreases, which is very likely to cause a reduction in production. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a strip-type sub-surface soil transformation machine to achieve the purpose of quickly and effectively transforming the sub-surface soil without disrupting the order of soil layers.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A strip-type subsurface soil reforming machine, comprising: Main frame, digging device, surface soil conveying device, tillage soil and fertilizer mixing device, ground wheel device, combined fertilizer box and mixed fertilizer application device; The digging device includes an obliquely arranged shovel surface for lifting the surface soil, and the digging device is connected to the front bottom of the main frame; The surface soil conveying device is arranged inside the main frame behind the excavating device, and is used to receive and transfer the surface soil to the rear; the surface soil conveying device includes a lifting slope formed by a conveying belt and rising upward and backward; The tillage layer soil-fertilizer mixing device is arranged at the bottom of the conveyor belt and connected to the main frame, and is used to loosen the sub-surface soil and mix it evenly with the mixed fertilizer; the tillage layer soil-fertilizer mixing device includes a soil crushing and mixing knife and an auxiliary knife, the auxiliary knife is below the soil crushing and mixing knife, the auxiliary knife has an obliquely arranged shovel surface, and a plurality of soil crushing and mixing knives are installed on the knife shaft at intervals; The ground wheel device is arranged on both sides of the middle part of the main frame; The combined fertilizer box is fixedly connected to the top of the main frame, and a fertilizer outlet is provided at the bottom of the combined fertilizer box; The mixed fertilizer application device comprises an upper conveying mechanism and a lower conveying structure. The upper conveying structure is arranged at the bottom of the fertilizer outlet of the combined fertilizer box, and the lower conveying mechanism is arranged below the conveying belt of the surface soil conveying device. The fertilizer outlet end of the upper conveying mechanism and the fertilizer inlet end of the lower conveying mechanism are connected through a material guide trough.

[0006] Furthermore, the angle between the shovel face of the excavating device and the horizontal plane is 22-25 degrees.

[0007] Furthermore, the surface soil conveying device includes a passive roller, a supporting roller, a roller connecting plate and a driving roller for installing and driving the conveying belt; the roller connecting plate is raised upward and rearward and fixedly connected to both sides of the main frame, the roller connecting plate is provided with a plurality of open grooves, and the passive roller and the supporting roller are installed in the open grooves; the driving roller is directly or indirectly connected to the driving device, the passive roller is arranged at the bottom end of the roller connecting plate, the conveying belt is installed between the driving roller and the passive roller, and the middle part of the conveying belt is supported by the supporting roller.

[0008] Furthermore, the tillage layer soil-fertilizer mixing device includes a long inclined rod, a short inclined rod and a shell with an open bottom; the shell includes a top plate and a side plate of the tillage layer soil-fertilizer mixing device; the side plate of the tillage layer soil-fertilizer mixing device and the long inclined rod are fixedly connected to the main frame; the knife shaft is connected between the side plates of the tillage layer soil-fertilizer mixing device; the lower end of the short inclined rod is hinged to one end of the long inclined rod, and the upper end of the short inclined rod is hinged to the side plate of the tillage layer soil-fertilizer mixing device; the auxiliary knife seat is fixedly connected between the lower ends of the two short inclined rods, and a plurality of auxiliary knives are connected to the upper surface of the auxiliary knife seat.

[0009] Furthermore, the combined fertilizer box is divided into three types of fertilizer boxes: an organic fertilizer box, a chemical fertilizer box and a soil conditioner box.

[0010] Furthermore, the upper conveying mechanism of the mixed fertilizer application device includes an upper auger shell, an upper auger and an upper auger shaft. A material receiving hopper is arranged at the front end of the upper auger shell, the upper auger is connected to the surface of the upper auger shaft, the upper auger shaft is laterally rotatably connected to the upper auger shell and the end of the material receiving hopper, and an upper material throwing piece is arranged at the end of the upper auger shaft; the lower conveying mechanism includes a lower auger shell, a lower auger and a lower auger shaft, a plurality of discharge ports are arranged at the bottom of the lower auger shell, the lower auger is connected to the surface of the lower auger shaft, the lower auger shaft is laterally rotatably connected to the end of the lower auger shell, and a lower material throwing piece is arranged at the end of the lower auger shaft.

[0011] Furthermore, a lower auger discharging operating valve is provided on the outside of the lower auger shell, and the lower auger discharging operating valve includes a discharging port blocking plate, a toothed arc plate, a toothless arc plate, a pinion, a discharging amount adjusting rotating shaft, and an adjusting handle; both ends of the discharging port blocking plate are respectively fixedly connected to the toothed arc plates, and both ends of any toothed arc plate are connected to both ends of the toothless arc plate to form a circular ring wrapped around the outer side of the lower auger shell; lower auger fan-shaped seats are provided at both ends of the lower auger shell, and both ends of the discharging amount adjusting rotating shaft are rotatably connected to the lower auger fan-shaped seats, and the adjusting handle and the pinion are fixedly connected to the discharging amount adjusting rotating shaft, and the pinion is meshed with the toothed arc plate.

[0012] Furthermore, it includes a depth limiting device, which includes a depth limiting device adjusting column, a depth limiting device adjusting sleeve, a depth limiting device crossbeam and a depth limiting roller, and a depth limiting roller connecting arm; the depth limiting device is installed at the bottom of the front end of the main frame through the depth limiting device adjusting sleeve, and connecting holes are arranged at intervals on the depth limiting device adjusting column and the depth limiting device adjusting sleeve, the depth limiting device adjusting column is installed in the depth limiting device adjusting sleeve, and a connecting pin is selectively installed in the corresponding connecting hole; the lower and upper parts of the depth limiting device crossbeam are rigidly connected to the depth limiting roller connecting arm and the depth limiting device adjusting column respectively, and the depth limiting roller is connected to the depth limiting roller connecting arm.

[0013] Furthermore, it includes a soil suppression and crushing device, which is located at the bottom of the rear end of the main frame; the soil suppression and crushing device includes a suppression seat, a suppression spring, a suppression rod, a suppression rod connecting ear, a side connecting arm, a vertical bearing seat, a soil suppression and crushing roller and a crossbeam of the soil suppression and crushing device; the suppression seat and the side connecting arm are respectively connected to the main frame, the suppression seat is connected to the suppression rod set and a suppression spring is installed between the suppression seat and the suppression rod, the suppression rod connecting ear is fixedly connected to both sides of the crossbeam of the soil suppression and crushing device, the suppression rod is hinged to the suppression rod connecting ear, the side connecting arm is connected to both ends of the crossbeam of the soil suppression and crushing device, and the soil suppression and crushing roller is connected to the side connecting arm through the vertical bearing seat.

[0014] Furthermore, it comprises a hitch frame, a front end of which is connected to the traction machine.

[0015] The present invention provides a strip-type sub-surface soil transformation machine, which performs strip-type mechanized operations only on the crop growth belt area through interval operations, and the surface soil and the sub-surface soil both maintain their original spatial positions, that is, it is possible to apply mixed fertilizers such as organic fertilizers, chemical fertilizers and soil conditioners into the sub-surface soil at one time and mix them with the soil layer without disrupting the order of the soil layers, and form a deep and fertile soil layer through mechanized means, so as to achieve the purpose of quickly and effectively transforming the sub-surface soil, increase the organic matter content of the sub-surface soil, loosen the sub-surface soil, increase the thickness of the tillage layer, which is beneficial to the growth of crop roots, and thus increase crop yields. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings herein are used to provide further explanation of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their description are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 It is a schematic diagram of the whole machine of the present invention from the right rear at 45°; Figure 2 It is a schematic diagram of the left front 45° of the whole machine of the present invention; Figure 3 is a schematic diagram of the structure of the surface soil conveying device; Figure 4 It is a schematic diagram of the structure of a tillage layer soil-fertilizer mixing device; Figure 5 is a schematic diagram of the structure of the ground wheel device; Figure 6 It is a schematic diagram of the structure of a combined fertilizer box; Figure 7 It is a schematic diagram of the structure of a mixed fertilizer application device; Figure 8 It is a schematic diagram of the structure of the lower auger shell; Fig. 9 This is a schematic diagram of the structure of the lower auger discharge operation valve; Fig.10 is a schematic diagram of the depth limiting device structure; Fig.11 It is a schematic diagram of the structure of a soil compaction and crushing device.

[0018] 1-hook frame, 101-hook pin; 2-main frame, 201-main frame three-point hitch; 3- Excavation device; 4-surface soil conveying device, 401-conveying belt, 402-passive roller, 403-supporting roller, 404-roller connecting plate, 405-conveying belt screw tensioning device, 406-tensioning roller, 407-driving roller, 408-driving roller coaxial sprocket, 409-driving roller bearing seat; 5-a plough layer soil-fertilizer mixing device, 501-a long inclined tie rod, 502-a side plate of the plough layer soil-fertilizer mixing device, 503-a top plate of the plough layer soil-fertilizer mixing device, 504-a soil-crushing mixing knife, 505-a short inclined tie rod, 506-auxiliary knife, 507-auxiliary knife seat, 508-a transmission box of the plough layer soil-fertilizer mixing device, 509-a knife shaft; 6-ground wheel device, 601-oil cylinder housing, 602-oil cylinder piston rod, 603-fixed arm, 604-rotating shaft, 605-moving arm, 606-tire, 607-connecting claw; 7-combined fertilizer box, 701-organic fertilizer box, 7011-rigid guard plate, 7012-flexible guard plate, 7013-scraper, 7014-scraper chain, 702-soil conditioner box, 703-chemical fertilizer box, 704-fertilizer box support rod, 705-fertilizer box connecting ear, 706-electric discharge device, 707-organic fertilizer drive sprocket, 708-organic fertilizer drive shaft; 8-mixed fertilizer application device, 801-mixed fertilizer application device transmission double sprocket, 802-upper auger seat, 803-upper auger, 804-upper auger shaft, 805-receiving hopper, 806-upper material throwing piece, 807-right angle transmission device, 808-material guide trough, 809-operating valve, 810-upper auger shell, 811-lower auger shell, 8111-feeding port, 8112-first discharge port, 8113-second discharge port, 8114-third discharge port, 812-lower auger fan-shaped seat, 813-toothless arc plate, 814-toothed arc plate, 815-lower auger, 816-lower material throwing piece, 817-lower auger three-ear seat, 818-adjusting handle, 819-lower auger shaft, 820-discharge amount adjustment rotating shaft, 821-limit baffle, 822-pinion gear, 823-discharge port blocking plate; 9-depth limiting device, 901-depth limiting device adjusting column, 902-depth limiting device adjusting sleeve, 903-depth limiting device crossbeam, 904-depth limiting roller, 905-depth limiting roller connecting arm; 10-suppression and soil crushing device, 1001-suppression seat, 1002-suppression spring, 1003-suppression rod, 1004-suppression rod connecting ear, 1005-side connecting arm, 1006-vertical bearing seat, 1007-suppression and soil crushing roller, 1008-suppression and soil crushing device crossbeam. DETAILED DESCRIPTION

[0019] In order to make those skilled in the art better understand the present invention, the present invention is further clearly and completely described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the features in the embodiments and examples of this application can be combined with each other.

[0020] The directions in this manual are as follows: the mounting bracket 1 is located at the front end of the machine, the soil compaction and crushing device 10 is located at the rear end of the machine, the person faces the front end and the back faces the rear end, then the left hand direction is the left side of the machine, and the right hand direction is the right side of the machine.

[0021] The basic concept of the present invention is to keep the original spatial positions of the surface soil and the sub-surface soil, and to apply mixed fertilizers such as organic fertilizers, chemical fertilizers and soil conditioners into the sub-surface soil layer at one time and mix them with the soil layer without disrupting the order of the soil layers.

[0022] Based on this, a typical embodiment of the present invention provides a strip-type sub-surface soil improvement machine, such as Figure 1 and Figure 2 As shown, it is mainly composed of a main frame 2, an excavating device 3, a surface soil conveying device 4, a tillage layer soil-fertilizer mixing device 5, a ground wheel device 6, a combined fertilizer box 7, and a mixed fertilizer application device 8.

[0023] The main frame 2 is connected to the hitch frame 1, and the front end of the hitch frame 1 is connected to the traction machine. The hitch frame 1 is hinged to the main frame three-point hitch device 201 set on the main frame 2 through the hitch pin 101, so that the machine can swing with the hitch pin 101 as the rotation axis during driving to achieve flexible steering.

[0024] The digging device 3 includes an obliquely arranged shovel surface for lifting the surface soil, and the digging device 3 is fixedly connected to the front bottom of the main frame 2. The digging device 3 is made of wear-resistant material.

[0025] In a preferred embodiment, the angle between the shovel face of the excavating device 3 and the horizontal plane is 22-25 degrees to reduce excavation resistance. For example, the angle between the shovel face of the excavating device 3 provided in this embodiment and the horizontal plane is 22.5 degrees.

[0026] refer to Figure 3 The surface soil conveying device 4 is arranged inside the main frame 2 behind the excavating device 3, and the surface soil conveying device 4 includes a lifting slope formed by a conveying belt 401 and rising upward and backward. The surface soil conveying device 4 is used to receive and transfer the surface soil to the rear.

[0027] In a relatively specific embodiment, the topsoil conveying device 4 includes a passive roller 402 , a support roller 403 , a roller connecting plate 404 and a driving roller 407 for mounting and driving the conveying belt 401 .

[0028] The roller connecting plate 404 is raised upward and rearward and fixedly connected to both sides of the main frame 2. The driving roller 407 is directly or indirectly connected to the driving device. The passive roller 402 is arranged at the bottom end of the roller connecting plate 404. The conveying belt 401 is installed between the driving roller 407 and the passive roller 402. The middle part of the conveying belt 401 is supported by the supporting roller 403.

[0029] refer to Figure 3 Specifically, the driving roller coaxial sprocket 408 is coaxially connected with the driving roller 407. The passive roller 402 is located behind the excavating device 3, and a plurality of supporting rollers 403 are arranged in sequence along the roller connecting plate 404 to rise upward and backward. The driving roller 407 is located at the upper end, and the tensioning roller 406 is located below the conveying belt 401. The tensioning roller 406 is adjusted by the conveying belt lead screw tensioning device 405 so that the conveying belt 401 is in a tensioned state to prevent slipping.

[0030] In order to facilitate installation, maintenance and disassembly, the roller connecting plate 404 is provided with a plurality of opening grooves, in which the passive roller 402 and the supporting roller 403 are installed. The passive roller 402, the supporting roller 403 and the roller connecting plate 404 can be quickly installed or disassembled without using tools.

[0031] refer to Figure 4 The tillage layer soil-fertilizer mixing device 5 is fixedly installed on the inner side of the main frame 2, below the conveyor belt 401, and is used to loosen the sub-surface soil and mix it evenly with the mixed fertilizer.

[0032] The tillage layer soil-fertilizer mixing device 5 comprises a soil crushing and mixing knife 504 and an auxiliary knife 506 . The auxiliary knife 506 is below the soil crushing and mixing knife 504 . The auxiliary knife 506 has an obliquely arranged shovel surface. A plurality of soil crushing and mixing knives 504 are installed on the knife shaft 509 at intervals.

[0033] refer to Figure 4 In a preferred embodiment, the tillage layer soil-fertilizer mixing device 5 includes a long inclined rod 501, a short inclined rod 505 and a shell with an open bottom.

[0034] The shell includes a top plate 503 of the tillage layer soil-fertilizer mixing device and a side plate 502 of the tillage layer soil-fertilizer mixing device. The side plate 502 of the tillage layer soil-fertilizer mixing device and the long inclined rod 501 are fixedly connected to the main frame 2.

[0035] The top plate 503 of the tillage layer soil-fertilizer mixing device and the side plates 502 of the tillage layer soil-fertilizer mixing device form a semi-enclosed protective shell, which plays the role of protection and collision and crushing soil.

[0036] The side plates 502 of the tillage layer soil-fertilizer mixing device are connected with a knife shaft 509. The knife shaft 509 and the transmission box 508 of the tillage layer soil-fertilizer mixing device are connected with the side plates 502 of the tillage layer soil-fertilizer mixing device, and the knife shaft 509 is connected with a plurality of spirally arranged soil-crushing mixing knives 504.

[0037] An auxiliary knife seat 507 is fixedly connected between the lower ends of the two short inclined rods 505 . The auxiliary knife seat 507 and the short inclined rods 505 are fixedly connected to form a U-shaped structure. A plurality of auxiliary knives 506 are connected to the upper surface of the auxiliary knife seat 507 .

[0038] The lower end of the short inclined rod 505 is hinged to one end of the long inclined rod 501, and the upper end of the short inclined rod 505 is hinged to the side plate 502 of the tillage layer soil-fertilizer mixing device; after the connection, the auxiliary knife seat 507 is located just below the knife shaft 509, so that during the operation, the auxiliary knife seat 507 can withstand vertical pressure, avoiding the soil crushing and mixing knife 504 directly touching the ground and bearing vertical pressure, thereby damaging the knife shaft 509, the soil crushing and mixing knife 504 and other working parts. At the same time, the auxiliary knife 506 can also cut the soil during the forward process to reduce working resistance.

[0039] The ground wheel device 6 is arranged on both sides of the middle part of the main frame 2. Figure 5 Specifically, the ground wheel device 6 includes a cylinder housing 601, a cylinder piston rod 602, a fixed arm 603, a rotating shaft 604, and a movable arm 605. The ground wheel device 6 is fixedly connected to the outer side of the main frame 2 through a connecting claw 607 and a fixed arm 603. The cylinder housing 601 is hinged to the fixed arm 603, the cylinder piston rod 602 is hinged to the movable arm 605, the movable arm 605 is also hinged to the fixed arm 603 through a rotating shaft 604, and a tire 606 is connected to the movable arm 605. The cylinder piston rod 602 and the cylinder housing 601 are relatively telescopic, thereby driving the movable arm 605 to rotate around the center of the rotating shaft 604, and the wheel tire 606 moves to achieve a change in the support position, thereby raising or lowering the height of the whole machine relative to the ground.

[0040] The combined fertilizer box 7 is fixedly connected to the top of the main frame 2, and a fertilizer outlet is provided at the bottom of the combined fertilizer box 7. Figure 6 The combined fertilizer box 7 is fixedly connected to the upper part of the main frame 2 through a fertilizer box support rod 704 and a plurality of fertilizer box connecting ears 705. The combined fertilizer box 7 is provided with three types of fertilizer boxes, namely, an organic fertilizer box 701, a chemical fertilizer box 703 and a soil conditioner box 702, and the order of volume is organic fertilizer box 701>chemical fertilizer box 703>soil conditioner box 702.

[0041] A scraper 7013 is provided at the bottom of the fertilizer box 701. The fertilizer driving sprocket 707 is coaxially installed with the fertilizer driving shaft 708, which can drive the scraper chain 7014 and then drive the scraper 7013 to scrape the fertilizer in the fertilizer box 701 from the back to the front and discharge it. The bottom of the fertilizer box 703 and the soil conditioner box 702 are both provided with an electric discharger 706, and the discharge amount can be controlled by an electronic control method.

[0042] A rigid guard plate 7011 with an inclined angle is rigidly connected to the left and right sides of the organic fertilizer box 701 to protect the internal scraper chain 7014 and prevent transmission failure; a flexible guard plate 7012 is provided at the tail of the organic fertilizer box 701 to prevent the internal organic fertilizer from leaking out and also to avoid rigid collision during contact with the scraper 7013.

[0043] The mixed fertilizer application device 8 includes an upper conveying mechanism and a lower conveying structure. The upper conveying structure is arranged at the bottom of the fertilizer outlet of the combined fertilizer box 7, and the lower conveying mechanism is arranged below the conveying belt 401. The fertilizer outlet end of the upper conveying mechanism and the fertilizer inlet end of the lower conveying mechanism are connected through a material guide trough 808.

[0044] refer to Figure 7 The mixed fertilizer application device 8 is fixedly connected to the main frame 2 through the upper auger seat 802, the lower auger three-ear seat 817, and the lower auger fan-shaped seat 812.

[0045] The upper conveying mechanism of the mixed fertilizer application device 8 includes an upper auger shell 810, an upper auger 803 and an upper auger shaft 804. A material receiving hopper 805 is arranged at the front end of the upper auger shell 810. The upper auger 803 is connected to the surface of the upper auger shaft 804. The upper auger shaft 804 is laterally rotatably connected to the upper auger shell 810 and the end of the material receiving hopper 805. An upper material throwing piece 806 is arranged at the end of the upper auger shaft 804.

[0046] The driving double sprocket 801 of the mixed fertilizer application device is coaxially connected to the upper auger shaft 804. The upper auger 803 is a right-hand spiral type. The upper ejector 806 is used to force the mixed fertilizer pushed there to be discharged to avoid accumulation and congestion.

[0047] The lower conveying mechanism includes a lower auger shell 811, a lower auger 815 and a lower auger shaft 819. A plurality of discharge ports are arranged at the bottom of the lower auger shell 811. The lower auger 815 is connected to the surface of the lower auger shaft 819. The lower auger shaft 819 is laterally rotatably connected to the end of the lower auger shell 811. A lower material throwing piece 816 is arranged at the end of the lower auger shaft 819.

[0048] The lower auger 815 is also of right-hand spiral type, and the lower ejector 816 is used to forcibly discharge the material transported to the end to avoid accumulation.

[0049] In a preferred embodiment, Figure 8 As shown, the discharge ports of the lower auger shell 811 are provided with a first discharge port 8112, a second discharge port 8113, and a third discharge port 8114, and the discharge port area is the smallest near the feed port 8111 and increases linearly in sequence. This arrangement is to ensure that the material falling in each cross section during the movement and transportation of the material from the first discharge port 8112 to the third discharge port 8114 is as similar as possible, so as to achieve uniform material dropping.

[0050] like Figure 7 As shown, the outlet of the upper auger housing 810 is connected to one end of the guide trough 808, and the other end of the guide trough 808 is connected to the feed port 8111 of the lower auger housing 811. An operating valve 809 is provided on the upper surface of the guide trough 808 for internal maintenance or cleaning. A right-angle transmission device 807 is provided on the outer side of the guide trough 808 to achieve relative rotation of the upper auger 803 and the lower auger 815, so that the material is discharged from the upper auger housing 810 and then enters the guide trough 808, and then enters the lower auger housing 811 from the guide trough 808, and finally is pushed out by the lower auger 815.

[0051] In a preferred embodiment, a lower auger discharge operation valve is provided outside the lower auger housing 811. Fig. 9 As shown, the lower auger discharge operating valve includes a discharge port blocking plate 823, a toothed arc plate 814, a toothless arc plate 813, a pinion 822, a discharge amount adjustment rotating shaft 820, and an adjustment handle 818.

[0052] The two ends of the discharge port blocking plate 823 are respectively fixedly connected to the toothed arc plate 814, and the two ends of any toothed arc plate 814 are connected to the two ends of the toothless arc plate 813 to form a circular ring wrapped around the outside of the lower auger shell 811, which is used to support the discharge port blocking plate 823 to rotate along the lower auger shell 811.

[0053] The lower auger fan-shaped seats 812 are provided at both ends of the lower auger housing 811, and the two ends of the discharge amount adjustment rotating shaft 820 are rotatably connected to the lower auger fan-shaped seats 812. The adjustment handle 818 and the pinion gear 822 are fixedly connected to the discharge amount adjustment rotating shaft 820, and the pinion gear 822 is meshed with the toothed arc plate 814. Turning the adjustment handle 818 can drive the pinion gear 822 to rotate, and then drive the toothed arc plate 814 to rotate, and then drive the discharge port blocking plate 823 to rotate along the lower auger housing 811, so as to increase or decrease the overlapping area of ​​the discharge port blocking plate 823 and the three discharge ports, thereby adjusting the discharge amount and the uniformity of the discharge.

[0054] Each pinion 822 has a limit baffle 821 on both sides to prevent the pinion 822 from moving laterally and failing to mesh with the toothed arc plate 814.

[0055] like Fig.10 As shown, a preferred embodiment provides a strip-type sub-surface soil reforming machine including a depth limiting device 9. The depth limiting device 9 includes a depth limiting device adjusting column 901, a depth limiting device adjusting sleeve 902, a depth limiting device crossbeam 903, a depth limiting roller 904, and a depth limiting roller connecting arm 905.

[0056] The depth limiting device 9 is installed at the front bottom of the main frame 2 through the depth limiting device adjustment sleeve 902. The depth limiting device adjustment column 901 and the depth limiting device adjustment sleeve 902 are provided with connection holes at intervals. The depth limiting device adjustment column 901 is installed in the depth limiting device adjustment sleeve 902, and a connection pin is selectively installed in the corresponding connection hole. The depth limiting device adjustment column 901 can move up and down in the depth limiting device adjustment sleeve 902, and different depth adjustments can be achieved through the cooperation of different connection holes.

[0057] The lower and upper parts of the depth limit device cross beam 903 are rigidly connected to the depth limit roller connecting arm 905 and the depth limit device adjusting column 901, respectively, and the depth limit roller 904 is connected to the depth limit roller connecting arm 905. In order to avoid deformation of the depth limit roller 904 due to excessive span, a double depth limit roller 904 structure is adopted.

[0058] like Fig.11 As shown, another preferred embodiment provides a strip-type sub-surface soil improvement machine including a soil compaction and crushing device 10.

[0059] The soil suppression and crushing device 10 is located at the bottom of the rear end of the main frame 2; the soil suppression and crushing device 10 includes a suppression seat 1001, a suppression spring 1002, a suppression rod 1003, a suppression rod connecting ear 1004, a side connecting arm 1005, a vertical bearing seat 1006, a soil suppression and crushing roller 1007 and a soil suppression and crushing device crossbeam 1008.

[0060] The soil crushing device 10 is connected to the main frame 2 through a pressure seat 1001 and a side connecting arm 1005. The pressure seat 1001 is connected to the pressure rod 1003 in a sleeve-type manner, and a pressure spring 1002 is installed between the pressure seat 1001 and the pressure rod 1003. The pressure rod connecting ears 1004 are fixedly connected to both sides of the cross beam 1008 of the soil crushing device, the pressure rod 1003 is hinged to the pressure rod connecting ears 1004, and the side connecting arm 1005 is connected to both ends of the cross beam 1008 of the soil crushing device. The pressure rod connecting ears 1004, the side connecting arm 1005 and the cross beam 1008 of the soil crushing device are fixedly connected to form a whole. The soil crushing roller 1007 is connected to the side connecting arm 1005 through a vertical bearing seat 1006.

[0061] The suppression rod 1003 can be relatively telescopically movable along the suppression seat 1001, so that the suppression roller 1007 can float up and down within a certain range. At the same time, the suppression spring 1002 is compressed or automatically reset, transmitting the force to the suppression roller 1007, ensuring that the suppression roller 1007 is always in contact with the undulating surface with a certain pressure, suppressing the surface soil and crushing the soil clods.

[0062] During operation, the depth limiting device 9 controls the excavating device 3 to operate at a set depth, and moves the surface soil with a thickness of 0-20 cm (hereinafter referred to as "surface soil") backward along the surface of the excavating device 3 into the surface soil conveying device 4, so that the surface soil leaves the surface. At the same time, the combined fertilizer box 7 discharges mixed fertilizers such as organic fertilizers, chemical fertilizers, and soil conditioners into the receiving hopper 805 at the same time.

[0063] The mixed fertilizer collides with each other on the side wall of the receiving hopper 805 to achieve the first mixing, and then enters the upper auger 803 and is pushed by the upper auger 803. The mixed fertilizer passes over the surface soil conveying device 4, and in this process, the mixed fertilizer achieves the second mixing. Then, the mixed fertilizer is discharged into the guide trough 808 by the action of the upper throwing piece 806, and then flows into the lower auger 815 along the guide trough 808 inclined at a large angle. In the process of the guide trough 808 sliding down, the mixed fertilizer achieves the third mixing, and then is pushed by the lower auger 815. In this process, the mixed fertilizer achieves the fourth mixing, and the mixed fertilizer enters the bottom of the surface soil conveying device 4, and is finally discharged evenly through the first discharge port 8112, the second discharge port 8113, and the third discharge port 8114, respectively, and falls below the surface soil and above the soil 20-40 cm thick from the surface (hereinafter referred to as "sub-surface soil").

[0064] The auxiliary knife 506 in the tillage layer soil-fertilizer mixing device 5 lifts the sub-surface soil of 20 cm thickness along the shovel surface, and then is acted upon by the soil-breaking mixing knife 504 to loosen and break the sub-surface soil and mix it evenly with the mixed fertilizer that has fallen onto the sub-surface soil in the early stage, thereby forming a new sub-surface soil rich in mixed fertilizer, thereby achieving the purpose of rapidly increasing the organic matter in the sub-surface soil. Subsequently, the surface soil leaves the end of the surface soil conveying device 4 and falls to cover the new sub-surface soil. Finally, the surface soil is appropriately suppressed and broken by the soil-suppression and crushing device 10, thereby achieving the purpose of moisture conservation and not disrupting the spatial position of the surface soil and the sub-surface soil.

[0065] The scope of protection claimed by the present invention is not limited to the above specific embodiments. For those skilled in the art, the present invention may have various deformations and changes. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A strip-type subsurface soil improvement machine, characterized in that: include: A main frame (2), an excavating device (3), a surface soil conveying device (4), a tillage layer soil-fertilizer mixing device (5), a ground wheel device (6), a combined fertilizer box (7) and a mixed fertilizer application device (8); The digging device (3) comprises an obliquely arranged shovel surface for lifting the surface soil, and the digging device (3) is connected to the front bottom of the main frame (2); The surface soil conveying device (4) is arranged inside the main frame (2) behind the excavating device (3) and is used to receive and transfer the surface soil to the rear; the surface soil conveying device (4) comprises a lifting slope formed by a conveying belt (401) and rising upward and backward; The tillage layer soil-fertilizer mixing device (5) is arranged at the bottom of the conveyor belt (401) and connected to the main frame (2), and is used to loosen the sub-surface soil and mix it evenly with the mixed fertilizer; the tillage layer soil-fertilizer mixing device (5) comprises a soil crushing and mixing knife (504) and an auxiliary knife (506), the auxiliary knife (506) is below the soil crushing and mixing knife (504), the auxiliary knife (506) has an obliquely arranged shovel surface, and a plurality of soil crushing and mixing knives (504) are installed on the knife shaft (509) at intervals; A ground wheel device (6) is arranged on both sides of the middle part of the main frame (2); A combined fertilizer box (7) is fixedly connected to the top of the main frame (2), and a fertilizer outlet is provided at the bottom of the combined fertilizer box (7); The mixed fertilizer application device (8) comprises an upper conveying mechanism and a lower conveying structure, wherein the upper conveying structure is arranged at the bottom of the fertilizer outlet of the combined fertilizer box (7), and the lower conveying mechanism is arranged below the conveying belt (401) of the surface soil conveying device (4), and the fertilizer outlet end of the upper conveying mechanism and the fertilizer inlet end of the lower conveying mechanism are connected through a material guide trough (808).

2. The strip-type subsurface soil improvement machine according to claim 1, characterized in that: The angle between the shovel surface of the excavating device (3) and the horizontal plane is 22-25 degrees.

3. The strip-type subsurface soil improvement machine according to claim 1 or 2, characterized in that: The surface soil conveying device (4) comprises a passive roller (402), a supporting roller (403), a roller connecting plate (404) and a driving roller (407) for installing and driving the conveying belt (401); the roller connecting plate (404) is raised upward and rearward and fixedly connected to both sides of the inside of the main frame (2); the roller connecting plate (404) is provided with a plurality of open grooves, and the passive roller (402) and the supporting roller (403) are installed in the open grooves; the driving roller (407) is directly or indirectly connected to the driving device, the passive roller (402) is arranged at the bottom end of the roller connecting plate (404), the conveying belt (401) is installed between the driving roller (407) and the passive roller (402), and the middle part of the conveying belt (401) is supported by the supporting roller (403).

4. The strip-type subsurface soil improvement machine according to claim 3 is characterized in that: The tillage layer soil-fertilizer mixing device (5) comprises a long inclined tie rod (501), a short inclined tie rod (505) and a shell with an open bottom; the shell comprises a tillage layer soil-fertilizer mixing device top plate (503) and a tillage layer soil-fertilizer mixing device side plate (502); the tillage layer soil-fertilizer mixing device side plate (502), the long inclined tie rod (501) and the main frame (2) are fixedly connected; a knife shaft (509) is connected between the tillage layer soil-fertilizer mixing device side plates (502); the lower end of the short inclined tie rod (505) is hinged to one end of the long inclined tie rod (501), and the upper end of the short inclined tie rod (505) is hinged to the tillage layer soil-fertilizer mixing device side plate (502); an auxiliary knife seat (507) is fixedly connected between the lower ends of the two short inclined tie rods (505), and a plurality of auxiliary knives (506) are connected to the upper surface of the auxiliary knife seat (507).

5. The strip-type subsurface soil improvement machine according to claim 1 or 4, characterized in that: The combined fertilizer box (7) is divided into three types of fertilizer boxes: an organic fertilizer box (701), a chemical fertilizer box (703) and a soil conditioner box (702).

6. The strip-type subsurface soil improvement machine according to claim 5, characterized in that: The upper conveying mechanism of the mixed fertilizer application device (8) comprises an upper auger housing (810), an upper auger (803) and an upper auger shaft (804); a material receiving hopper (805) is arranged at the front end of the upper auger housing (810); the upper auger (803) is connected to the surface of the upper auger shaft (804); the upper auger shaft (804) is rotatably connected to the upper auger housing (810) and the end of the material receiving hopper (805); and a material receiving hopper (805) is arranged at the end of the upper auger shaft (804). An upper material-swinging piece (806) is arranged; the lower conveying mechanism comprises a lower auger housing (811), a lower auger (815) and a lower auger shaft (819); a plurality of material discharge ports are arranged at the bottom of the lower auger housing (811); the lower auger (815) is connected to the surface of the lower auger shaft (819); the lower auger shaft (819) is connected to the end of the lower auger housing (811) in a lateral rotation manner; and a lower material-swinging piece (816) is arranged at the end of the lower auger shaft (819).

7. The strip-type subsurface soil improvement machine according to claim 6, characterized in that: A lower auger discharge operating valve is arranged outside the lower auger housing (811), and the lower auger discharge operating valve comprises a discharge port blocking plate (823), a toothed arc plate (814), a toothless arc plate (813), a pinion (822), a discharge amount adjustment rotating shaft (820), and an adjustment handle (818); the two ends of the discharge port blocking plate (823) are respectively fixedly connected to the toothed arc plate (814), and the two ends of any toothed arc plate (814) are respectively fixedly connected to the toothless arc plate The two ends of the lower auger housing (813) are connected to form a ring wrapped around the outer side of the lower auger housing (811); the lower auger fan-shaped seats (812) are provided at both ends of the lower auger housing (811); the two ends of the discharge amount adjustment rotating shaft (820) are rotatably connected to the lower auger fan-shaped seats (812); the adjustment handle (818) and the pinion (822) are fixedly connected to the discharge amount adjustment rotating shaft (820), and the pinion (822) is meshed with the toothed arc plate (814).

8. The strip-type subsurface soil improvement machine according to claim 1 or 7, characterized in that: The invention comprises a depth limiting device (9), wherein the depth limiting device (9) comprises a depth limiting device adjusting column (901), a depth limiting device adjusting sleeve (902), a depth limiting device crossbeam (903), a depth limiting roller (904), and a depth limiting roller connecting arm (905); the depth limiting device (9) is installed at the bottom of the front end of the main frame (2) through the depth limiting device adjusting sleeve (902); connecting holes are arranged at intervals on the depth limiting device adjusting column (901) and the depth limiting device adjusting sleeve (902); the depth limiting device adjusting column (901) is installed in the depth limiting device adjusting sleeve (902), and a connecting pin is selectively installed in the corresponding connecting hole; the lower part and the upper part of the depth limiting device crossbeam (903) are respectively rigidly connected to the depth limiting roller connecting arm (905) and the depth limiting device adjusting column (901) to form a whole; the depth limiting roller (904) is connected to the depth limiting roller connecting arm (905).

9. The strip-type subsurface soil improvement machine according to claim 8, characterized in that: The soil crushing device (10) comprises a soil crushing device (10), which is located at the bottom of the rear end of the main frame (2); the soil crushing device (10) comprises a soil crushing seat (1001), a soil crushing spring (1002), a soil crushing rod (1003), a soil crushing rod connecting ear (1004), a side connecting arm (1005), a vertical bearing seat (1006), a soil crushing roller (1007) and a soil crushing device crossbeam (1008); The suppression seat (1001) and the side connecting arm (1005) are respectively connected to the main frame (2); the suppression seat (1001) and the suppression rod (1003) are connected in a sleeve manner, and a suppression spring (1002) is installed between the suppression seat (1001) and the suppression rod (1003); the suppression rod connecting ears (1004) are fixedly connected to both sides of the cross beam (1008) of the suppression and soil crushing device; the suppression rod (1003) and the suppression rod connecting ears (1004) are hinged; the side connecting arm (1005) is connected to both ends of the cross beam (1008) of the suppression and soil crushing device; and the suppression and soil crushing roller (1007) is connected to the side connecting arm (1005) via a vertical bearing seat (1006).

10. The strip-type subsurface soil improvement machine according to claim 1 or 9, characterized in that: It comprises a mounting frame (1), the front end of which is connected to the traction machine.

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