Combined equipment for rotary tillage and land preparation and recycling and packaging of residual film in the tillage layer and residual film recycling method

Abstract

The present invention relates to the technical field of agricultural machinery and equipment, and specifically to a combined device for rotary tillage and soil preparation and recovery and packaging of residual film in the plowing layer, and a residual film recovery method. The combined device includes a frame, a hydraulic power transmission system, and a traveling device. On the frame, a rotary tillage, digging and throwing device, a drum-type film-soil separation device, an arc-shaped spring-tooth chain-type residual film picking device, and a film stripping device are sequentially arranged from front to back along the traction direction of the traveling device, and a self-adjusting residual film packaging device is arranged at the outlet end of the film stripping device. The combined device for rotary tillage and soil preparation and recovery and packaging of residual film in the plowing layer realizes the combined operation of rotary tillage before sowing and recovery and packaging of residual film in the soil plowing layer, and the integrated operation technology route of residual film packaging and recovery can realize multiple operation processes of rotary tillage and soil crushing, film-soil separation, straw removal, residual film picking, film stripping and packaging, and soil leveling at one time, thereby reducing the operation links, reducing the use cost, improving the residual film removal rate, and improving the soil pollution problem.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery and equipment, and in particular to a combined device for rotary tillage and land preparation and recovery and packaging of residual film in the plowing layer, as well as a residual film recovery method. Background Art

[0002] Film mulching is a modern agricultural technique that uses a plastic film covering the soil surface to improve the growing environment for crops, thereby increasing crop yield and quality. This technique is widely used in many countries and regions, particularly in arid and semi-arid regions. The following are some of the key features and advantages of film mulching: It retains moisture and moisture. Plastic film reduces evaporation from the soil, maintaining soil moisture, which is particularly important in arid regions. It also increases ground temperature. Film mulching absorbs and reflects sunlight, raising soil temperatures and promoting seed germination and early crop growth. It inhibits weed growth. Film mulching prevents weed growth and reduces competition for crop nutrients. It improves fertilizer utilization. Film reduces fertilizer volatilization and loss, improving fertilizer efficiency. It also promotes crop growth. By improving the soil environment, film mulching promotes root development, increasing crop growth and yield.

[0003] While film-mulching cultivation technology improves crop quality and increases income in arid and semi-arid regions, it also causes serious white pollution. For example, plastic film residues in the soil are difficult to degrade. Long-term accumulation can damage soil structure, affecting both air and water permeability, and thus hindering the growth of crop roots and the activity of soil microorganisms.

[0004] With the research and development of residual film recovery machinery, the problem of residual film in farmland can be alleviated to a great extent. For example, Chinese patent document CN114916264A discloses a reverse speed difference chain residual film recovery machine and a residual film recovery method. The residual film recovery machine studies the physical properties of residual film, the mechanical properties of residual film, the physical properties of soil particles, and the mechanism of interaction between soil particles and residual film. The transport plane of the film transport device and the film picking plane of the transmission chain move in opposite directions to form a speed difference. The mixture scooped up by the film shovel is spread obliquely on the film transport device. During the transportation process, the balls and sieve holes arranged on the film transport device filter some soil particles and impurities back to the ground. Some soil blocks and impurities will be driven by the film transport device to the rear end of the frame and thrown back to the ground. The film tooth assembly recycles the residual film on the transport plane.

[0005] However, existing residual film recycling machines generally struggle to fully recycle the film laid that season. Unrecovered film, combined with film from previous seasons, remains in the topsoil of farmland due to the action of soil processing machinery. This residual film, left over from previous years, has already caused field contamination. Over time, this residual film significantly damages soil properties, crop growth, and the surrounding environment, compromising sustainable agricultural development.

[0006] Mechanized film recovery is difficult due to the high degree of aging and poor mechanical properties of residual film buried in the tillage layer of soil. Furthermore, residual film becomes intertwined and adheres to the tillage layer soil and crop stubble. Furthermore, existing residual film recovery machinery is relatively limited in function and has low operational efficiency, resulting in high costs for farmland use. Furthermore, the repeated use of agricultural machinery in farmland, which repeatedly compresses the soil, increases soil compaction, reduces water retention and air permeability, and ultimately hinders the normal growth of crops, negatively impacting agricultural production. Summary of the Invention

[0007] The purpose of the present invention is to provide a combined equipment for the process of recovering residual film in the plow layer, which can realize the efficient separation of film, rods and soil, complete the recovery of residual film in the plow layer of field soil, reduce the operation links, reduce the use cost, increase the residual film removal rate from the field, and improve the soil pollution problem.

[0008] In order to solve the above technical problems, the present invention proposes a combined device for rotary tillage and land preparation and plough layer residual film recovery and packaging, comprising a frame, a hydraulic power transmission system, and a traveling device. The frame is provided with a rotary tillage, digging and throwing device, a drum-type film-soil separation device, an arc-shaped spring-tooth chain-type residual film picking device and a film stripping device in sequence from front to back along the traction direction of the traveling device. The outlet end of the film stripping device is provided with a self-adjusting residual film packaging device.

[0009] The self-adjusting residual film packaging device includes an upper packaging unit, a lower packaging unit, a tensioning mechanism, a packaging cylinder and a film unloading cylinder. The upper packaging unit and the lower packaging unit are both installed on a frame. A packaging station for residual film packaging is formed between the upper packaging unit and the lower packaging unit. The film unloading cylinder is used to drive the upper packaging unit to rotate relative to the lower packaging unit, thereby opening the packaging station.

[0010] The upper packing unit includes an upper packing motor, a first drive shaft roller, an upper packing belt, a first auxiliary shaft roller and a first tensioning shaft roller. The first auxiliary shaft roller is connected to the first drive shaft roller through the upper packing belt. The upper packing motor drives the first drive shaft roller to drive the upper packing belt to rotate. The tensioning mechanism is arranged on the inner side of the upper packing belt and applies tension to the upper packing belt through the first tensioning shaft roller.

[0011] The lower packing unit includes a lower packing motor, a second drive shaft roller, a lower packing belt, a second auxiliary shaft roller and a second tensioning shaft roller. The second auxiliary shaft roller is connected to the second drive shaft roller through the lower packing belt. The lower packing motor drives the second drive shaft roller to drive the lower packing belt to rotate. The packing cylinder is arranged on the outside of the lower packing belt and applies tension to the lower packing belt through the second tensioning shaft roller.

[0012] A packing channel for packing residual film is formed between the upper packing belt and the lower packing belt, and the movement direction of the upper packing belt on both sides of the packing channel is opposite to that of the lower packing belt.

[0013] The machine uses a rotary tillage, digging and throwing device to cut and throw the film-soil mixture in the tillage layer to the film-soil separation mechanism. The film-soil separation mechanism further spreads and separates the film-soil mixture in the tillage layer using multi-stage rollers equipped with racks and toothed discs. The curved spring teeth arranged on the film picking mechanism simultaneously pick up the residual film screened out by the film-soil separation mechanism and the residual film in the tillage layer that has not been thrown away, thereby improving the residual film recovery efficiency. The film stripping mechanism can scrape the residual film picked up by the film picking mechanism to the packaging mechanism, where it is packaged through the friction between the residual film and the packaging tape.

[0014] Preferably, the tensioning mechanism includes a bearing seat slide, a slider-type seat bearing, a bearing seat top rod and a tensioning spring for applying a restoring force to the first tensioning shaft roller. The bearing seat slide is arranged on the mounting plate of the upper packaging unit, the slider-type seat bearing is embedded in the bearing seat slide, the end of the first tensioning shaft roller is connected to the slider-type seat bearing, the bearing seat top rod is arranged parallel to the bearing seat slide, the bearing seat top rod is connected to the side wall of the slider-type seat bearing, and the tensioning spring is sleeved on the bearing seat top rod.

[0015] Preferably, the drum-type membrane-soil separation device includes a hydraulic motor, a rack shaft roller, a first-level gear disc shaft roller, a second-level gear disc shaft roller and a chain transmission mechanism. The hydraulic motor is installed on the side plate of the drum-type membrane-soil separation device. The hydraulic motor is connected to the end of the rack shaft roller through a coupling. The rack shaft roller is connected to the first-level gear disc shaft roller and the second-level gear disc shaft roller through a chain transmission mechanism.

[0016] For example, the rack shaft roller includes a rack roller core shaft, a rack roller rib, a rack roller, a rack and a film retaining ring. The central axis of the rack roller core shaft is rotatably connected to the side plate through a bearing. Racks are evenly distributed on the circumference of the rack roller, and both sides are fixed to the rack roller core shaft through the rack roller ribs. The film retaining ring coincides with the central axis of the rack roller core shaft and is respectively fixed to the outside of the rack roller ribs.

[0017] The secondary geared roller has the same structure as the primary geared roller. The primary geared roller includes a geared roller core shaft, geared roller ribs, a geared roller and geared discs. The central axis of the geared roller core shaft is rotatably connected to the side plate through a bearing. Geared discs are evenly distributed on the circumference of the geared roller, and both sides are fixed to the geared roller core shaft through geared roller ribs.

[0018] Preferably, the straw impurity removal device is installed at the rear and lower part of the drum-type membrane-soil separation device. The straw impurity removal device includes a ground wheel, a impurity removal shaft, spiral blades and a bottom plate. The impurity removal shaft is rotatably connected to the frame through a bearing. Spiral blades with equal pitch and opposite rotation direction are installed on the side wall of the impurity removal shaft. A ground wheel is installed at one end of the impurity removal shaft, and a bottom plate is installed under the spiral blade, and strip sieve holes are provided on the bottom plate.

[0019] Preferably, the arc-shaped elastic tooth chain type residual film picking device includes an arc-shaped elastic tooth, an elastic tooth shaft, an elastic tooth shaft bracket, an elastic tooth chain, a picking driven shaft, a picking tensioning shaft and a picking active shaft. The arc-shaped elastic teeth are evenly arranged on the elastic tooth shaft, and the arc-shaped elastic teeth on the two adjacent elastic tooth shafts are staggered. The two ends of the elastic tooth shaft are respectively fastened to the outer chain links of the elastic tooth chains on both sides through the elastic tooth shaft bracket. The picking tensioning shaft is located behind the terminal shaft roller in the drum-type film-soil separation device, and forms a certain angle with the plane where the axis of the picking active shaft is located and the plane where the axis of the picking active shaft and the picking driven shaft are located.

[0020] Preferably, the demolding device is arranged between the arc-shaped spring-tooth chain residual film picking device and the self-adjusting residual film packaging device. The demolding device includes a demolding shaft, a demolding brush support and a demolding brush. The demolding brush is fixed to the demolding shaft through the demolding brush support.

[0021] Preferably, a rotary tillage depth limiting device is provided on the front side of the rotary tillage and digging device.

[0022] Preferably, a soil pressing device is provided below the self-regulating residual film packaging device.

[0023] Another aspect of the present invention provides a method for recovering residual film using the above-mentioned combined equipment for rotary tillage and land preparation and recovery and packaging of residual film in the plow layer, comprising the following steps:

[0024] Rotary tillage, digging and throwing: After the equipment is started, the rotary tillage, digging and throwing device first performs rotary tillage on the soil, loosening the soil through the rotating blades and exposing the residual film buried in the soil;

[0025] Film-soil separation: the soil and residual film mixture after rotary tillage are sent to the drum-type film-soil separation device, and the tillage layer film-soil mixture is further spread and separated by multi-stage shaft rollers equipped with racks and toothed discs;

[0026] Residual film picking up: the separated residual film then enters the arc-shaped spring-tooth chain type residual film picking up device. Through the movement of the arc-shaped spring-tooth chain, the arc-shaped spring teeth simultaneously pick up the residual film screened out by the film-soil separation mechanism and the residual film that has not been thrown up in the tillage layer, and further clean the residual soil on the residual film;

[0027] De-filming: the cleaned residual film is sent to the de-filming device, which separates the residual film from the picking device through mechanical action and sends the residual film to the packaging channel;

[0028] Residual film packaging: After film removal, the residual film enters the self-adjusting residual film packaging device. The upper packaging unit and the lower packaging unit are driven by the upper packaging motor and the lower packaging motor respectively. The residual film is compressed and packaged through the friction between the residual film and the packaging belt. The movement direction of the packaging belt is opposite to that of the residual film, ensuring that the residual film is tightly compressed in the packaging channel. As the round bundle of residual film continues to grow, the tensioning spring of the upper packaging belt is continuously compressed, and the packaging cylinder of the lower packaging belt is continuously stretched until it reaches the limit position;

[0029] The residual film is unloaded. After the packaging is completed, the film unloading cylinder and the packaging cylinder are driven. The film unloading cylinder extends and the packaging cylinder contracts. The upper packaging unit is lifted up and the lower packaging belt is tightened. The film unloading cylinder drives the upper packaging unit to rotate relative to the lower packaging unit, opening the packaging station. The residual film round bale rolls down and is unloaded under the action of gravity.

[0030] Preferably, the process of picking up residual film also includes a straw discharge step. Under the action of the arc-shaped spring teeth, the field straw will inevitably be picked up and recovered. The picking and conveying plane will be steepened by the tensioning shaft of the picking device, and the crop straw will fall into the straw discharge device under the action of gravity. The ground wheel on the straw discharge device contacts the ground and rotates with the operation of the equipment, thereby driving the spiral blades to rotate to discharge the straw, and the sieve holes of the bottom plate will discharge the soil particles that fall into the device.

[0031] Compared with the prior art, the combined equipment for rotary tillage and land preparation and the residual film recovery and packaging method provided by the present invention have the following outstanding substantive features and significant improvements:

[0032] 1. This combined rotary tillage and film recovery and baling equipment integrates rotary tillage, film-soil separation, film collection, and baling, automating the entire process from soil treatment to film recovery. This reduces the need for multiple independent devices and improves operational efficiency. The drum-type film-soil separation device effectively separates film from the soil through rotation and filtration, reducing soil residue on the film and improving the quality of film recovery. The uniquely designed arc-shaped spring-tooth chain film collection device accurately picks up film residue, reducing omissions and ensuring the integrity of film recovery. The self-adjusting film baling device automatically adjusts the baling pressure and speed according to the amount of film residue, ensuring that the film is packed into compact blocks for easy transportation and handling. The hydraulic power transmission system and travel device ensure ease and flexibility of operation, reducing operator labor intensity. The efficient film recovery and baling reduce environmental pollution in agricultural production. The equipment also has high energy efficiency, meeting energy-saving and environmental protection requirements. Its integrated design, efficient operation, and automated operation significantly improve the efficiency and quality of film recovery, helping to promote the sustainable development of agricultural production.

[0033] 2. The combined equipment for rotary tillage and land preparation and recovery and packaging of residual film in the tillage layer can be pulled and driven by a tractor to realize the combined operation of rotary tillage before sowing and recovery and packaging of residual film in the soil tillage layer. The integrated operation technology route of residual film packaging and recycling can realize multiple operation processes such as rotary tillage and soil crushing, film-soil separation, straw removal, residual film picking, film removal and packaging, and soil leveling at one time. It has the advantages of high operation efficiency and low impurity rate of recovered residual film, can meet various technical indicators of residual film recovery, alleviate the problem of tractors being in peak use during the spring plowing season, save time, and improve labor productivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of a combined device for rotary tillage, land preparation, and plow layer residual film recovery and packaging in an embodiment of the present invention.

[0035] Figure 2 yes Figure 1 A main view of a combined equipment for rotary tillage, land preparation, and recovery and packaging of residual film in the cultivated layer.

[0036] Figure 3 The present invention is a schematic diagram of the working principle of a combined device for rotary tillage, land preparation, and plow layer residual film recovery and packaging.

[0037] Figure 4 It is a schematic diagram of the three-dimensional structure of the drum-type membrane-soil separation device in an embodiment of the present invention.

[0038] Figure 5 yes Figure 4 Top view of .

[0039] Figure 6 It is a schematic diagram of the three-dimensional structure of the rack shaft roller in an embodiment of the present invention.

[0040] Figure 7 It is a schematic diagram of the three-dimensional structure of the gear wheel shaft roller in an embodiment of the present invention.

[0041] Figure 8 It is a schematic diagram of the three-dimensional structure of the straw impurity removal device in an embodiment of the present invention.

[0042] Figure 9 It is a structural schematic diagram of an arc-shaped spring-tooth chain type residual film picking device in an embodiment of the present invention.

[0043] Figure 10 yes Figure 9 Schematic diagram of the three-dimensional structure of the medium-arc spring-tooth chain residual film picking device.

[0044] Figure 11 It is a schematic diagram of the assembly structure of the spring gear shaft in an embodiment of the present invention.

[0045] Figure 12 Yes Figure 11 side view.

[0046] Figure 13 It is a schematic diagram of the three-dimensional structure of the walking device in an embodiment of the present invention.

[0047] Figure 14 yes Figure 13 Schematic diagram of the structure of the walking device in the traction and transportation state.

[0048] Figure 15 yes Figure 13 Schematic diagram of the structure of the walking device in the field operation state.

[0049] Figure 16 It is a schematic diagram of the three-dimensional structure of the demoulding device in an embodiment of the present invention.

[0050] Figure 17 yes Figure 16 Side view of the demoulding device.

[0051] Figure 18 It is a schematic diagram of the three-dimensional structure of the self-adjusting residual film packaging device in an embodiment of the present invention.

[0052] Figure 19 1 is a schematic diagram of the internal structure of the self-adjusting residual film packaging device in an initial state according to an embodiment of the present invention.

[0053] Figure 20 1 is a schematic diagram of the internal structure of the self-adjusting residual film packaging device in the packaging state according to an embodiment of the present invention.

[0054] Figure 21It is a side view of the self-adjusting residual film packaging device in the packaging state according to the embodiment of the present invention.

[0055] Figure 22 2. It is a schematic diagram of the use state of the self-adjusting residual film packaging device in the embodiment of the present invention in the unloading state.

[0056] Reference numerals: 1, traction frame; 2, main drive shaft; 3, frame; 4, transfer case; 5, hydraulic pump; 6, power input drive shaft of rotary tillage, digging and throwing device; 7, rotary tillage, digging and throwing device; 8, rotary tillage, digging and throwing device; 9, hydraulic oil tank; 10, drum-type film-soil separation device; 11, straw removal device; 12, arc-shaped spring-tooth chain-type residual film picking device; 13, traveling device; 14, film stripping device; 15, self-adjusting residual film packaging device; 16, soil suppression device;

[0057] 101. Hydraulic motor; 102. Coupling; 103. Side plate; 104. Rack shaft roller; 105. First-stage gear wheel shaft roller; 106. Second-stage gear wheel shaft roller; 107. Rack shaft roller driven sprocket; 108. Gear wheel shaft roller driving sprocket; 109. Gear wheel shaft roller driven sprocket;

[0058] 111. Ground wheel; 112. Exhaust shaft; 113. Spiral blade; 114. Bottom plate;

[0059] 121. Arc-shaped spring tooth; 122. Spring tooth shaft; 123. Spring tooth shaft bracket; 124. Spring tooth chain; 125. Pick up driven shaft; 126. Pick up tensioning shaft; 127. Pick up driving shaft;

[0060] 131. Traveling device center shaft; 132. Traveling cylinder; 133. Tire bracket; 134. Locking bolt; 135. Tire;

[0061] 141. Demolding shaft; 142. Demolding brush support; 143. Demolding brush;

[0062] 151. Lower packing motor; 152. Upper packing motor; 153. Lower packing belt; 154. Upper packing belt; 155. Bearing seat slide; 156. Slider-type seat bearing; 157. Tension spring; 158. Bearing seat push rod; 159. Packing cylinder;

[0063] 1041. Rack roller core shaft; 1042. Rack roller rib; 1043. Rack roller; 1044. Rack; 1045. Film retaining ring; 1046. Rack roller connecting flange;

[0064] 1051. Toothed roller core shaft; 1052. Toothed roller; 1053. Toothed disc; 1054. Toothed roller rib; 1055. Toothed roller connecting flange. DETAILED DESCRIPTION

[0065] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0066] like Figure 1-Figure 22 As shown, in an embodiment of the present invention, a combined device for rotary tillage and land preparation and recovery and packaging of residual film in the plow layer is proposed, which aims to achieve efficient separation of film, rods and soil, complete the recovery of residual film in the plow layer of field soil, reduce the operation links, reduce the use cost, increase the residual film removal rate from the field, and improve the soil pollution problem.

[0067] The combined rotary tillage and soil preparation and film recovery and packaging equipment for the tillage layer, proposed in an embodiment of the present invention, uses a rotary tillage, digging, and throwing device to cut and throw the film-soil mixture in the tillage layer to a film-soil separation mechanism. The film-soil separation mechanism further scatters and separates the film-soil mixture in the tillage layer using a multi-stage roller equipped with racks and toothed discs. The curved spring teeth arranged on the film-picking mechanism simultaneously pick up the film residue screened out by the film-soil separation mechanism and the film residue that has not been thrown up in the tillage layer, thereby improving the film recovery efficiency. The film stripping mechanism can scrape the film residue picked up by the film-picking mechanism to the packaging mechanism, where it is packaged through the friction between the film residue and the packaging belt. The present invention can effectively solve the problem of high film residue content in the tillage layer caused by continuous film planting. At the same time, rotary tillage and soil preparation can improve the quality of the seedbed in the farmland before sowing. When the entire machine is in operation, it can sequentially complete the combined operations of film recovery and packaging and rotary tillage and soil preparation, effectively reducing the damage to the farmland soil caused by multiple entries of agricultural machinery, thereby improving the quality of the seedbed in the farmland before sowing and the efficiency of the machinery.

[0068] like Figure 1 Combine Figure 2 As shown, a combined rotary tillage and film recovery and packaging device for plow layer residues includes a frame 3, a hydraulic power transmission system, and a travel device 13. On the frame 3, along the traction direction of the travel device 13, a rotary tillage and digging device 8, a drum-type film-soil separation device 10, an arc-shaped spring-tooth chain-type film-residual collection device 12, and a film stripping device 14 are sequentially arranged from front to back. The outlet of the film stripping device 14 is provided with a self-adjusting film-residual packaging device 15. For example, the frame 3 is connected to a tractor via a traction frame 1, and the tractor's power camera frame applies traction.

[0069] like Figure 1As shown, the hydraulic power transmission system includes a main transmission shaft 2, a transfer case 4, a hydraulic pump 5, a hydraulic oil tank 9, and a hydraulic motor 101. The transfer case 4 adopts a one-inlet and three-outlet structure and is installed at the front end of the frame 3. The front end of the transfer case 4 is connected to the power source via the main transmission shaft 2. The rear end of the transfer case 4 is connected to the rotary tiller 8 via the rotary tiller 8 power input transmission shaft 6. The hydraulic pump 5 is fastened to both sides of the transfer case 4 by bolts. The inlet and outlet of the hydraulic pump 5 are connected to the hydraulic oil tank 9 and the hydraulic motor 101 respectively through hydraulic pipelines. The hydraulic oil tank 9 is installed in the upper middle part of the frame 3. The box body is equipped with hydraulic oil pipe interfaces, which are connected to the oil inlet of the hydraulic pump 5 and the oil outlet of the hydraulic motor 101 respectively through hydraulic oil pipes. A liquid level gauge and oil temperature gauge are installed on the side of the box body.

[0070] like Figure 2 As shown, the rotary tillage, digging and throwing device 8 is mounted below the front end of the frame 3 via a pin. The power is transmitted to the rotary tiller shaft below through a central gearbox. The rotary tiller shaft is equipped with a row of rotary cutting tools. A rotary tillage depth limiting device 7 is installed at the front end of the rotary tillage, digging and throwing device 8. The rotary tillage depth limiting device 7 includes a depth limiting shaft roller. The side plate of the depth limiting shaft roller is provided with a plurality of connection holes. By adjusting different connection holes, the vertical distance between the axis of the depth limiting shaft roller and the axis of the rotary tiller shaft can be changed.

[0071] like Figure 4 Combine Figure 5 As shown, the drum-type membrane-soil separation device 10 includes a hydraulic motor 101, a rack shaft roller 104, a first-stage geared disc shaft roller 105, a second-stage geared disc shaft roller 106, and a chain drive mechanism. The hydraulic motor 101 is mounted on a side plate 103 of the drum-type membrane-soil separation device 10. The hydraulic motor 101 is connected to the end of the rack shaft roller 104 via a coupling 102. The rack shaft roller 104 is connected to the first-stage geared disc shaft roller 105 and the second-stage geared disc shaft roller 106 via a chain drive mechanism.

[0072] like Figure 6 As shown, the rack roller 104 includes a rack roller core shaft 1041, a rack roller rib 1042, a rack roller 1043, a rack 1044, and a film retaining ring 1045. The central axis of the rack roller core shaft 1041 is rotatably connected to the side plate 103 via a bearing. Racks 1044 are evenly distributed around the circumference of the rack roller 1043. Both sides are fixed to the rack roller core shaft 1041 via the rack roller rib 1042. The film retaining ring 1045 coincides with the central axis of the rack roller core shaft 1041 and is respectively fixed to the outer side of the rack roller rib 1042. To facilitate the installation of the rack roller core shaft 1041, a rack roller connecting flange 1046 is provided at the end of the rack roller core shaft 1041.

[0073] like Figure 4 Combine Figure 7As shown, the secondary geared roller 106 has the same structure as the primary geared roller 105. The primary geared roller 105 comprises a geared roller core shaft 1051, geared roller ribs 1054, a geared roller 1052, and geared discs 1053. The central axis of the geared roller core shaft 1051 is rotatably connected to the side plate 103 via a bearing. Geared discs 1053 are evenly distributed around the circumference of the geared roller 1052, and are secured to the geared roller core shaft 1051 on both sides via geared roller ribs 1054. The geared discs 1053 between adjacent geared rollers are staggered, and the planes containing the central axes of adjacent rollers form a predetermined angle with the horizontal plane. To further facilitate the installation of the geared roller 1052, a geared roller connecting flange 1055 is provided at the end of the geared roller 1052.

[0074] The chain transmission mechanism includes a rack shaft roller driven sprocket 107 , a toothed disc shaft roller driving sprocket 108 and a toothed disc shaft roller driven sprocket 109 .

[0075] like Figure 1 Combine Figure 8 As shown, the straw impurity removal device 11 is mounted at the rear lower portion of the drum-type membrane-soil separation device 10. The straw impurity removal device 11 comprises a ground wheel 111, an impurity removal shaft 112, spiral blades 113, and a base plate 114. The impurity removal shaft 112 is rotatably connected to the frame 3 via a bearing. Spiral blades 113 with equal pitch and opposite rotation directions are mounted on the sidewalls of the impurity removal shaft 112. The ground wheel 111 is mounted at one end of the impurity removal shaft 112. A base plate 114 is mounted below the spiral blades 113. The base plate 114 is provided with strip-shaped sieve holes.

[0076] The straw removal device 11 is used to remove straw. The curved spring teeth 121 inevitably pick up and recycle some crop straw from the field. The pick-up and conveying plane is steepened by the pick-up device's tensioning shaft, causing the crop straw to fall into the straw removal device 11 under the action of gravity. The ground wheel 111 of the straw removal device 11 is in contact with the ground and rotates as the device operates, driving the spiral blades 113 to rotate and remove the straw. The sieve holes in the bottom plate 114 remove soil particles that fall into the device.

[0077] like Figure 9 Combine Figure 10 As shown, the arc-shaped spring-tooth chain type residual film picking device 12 includes an arc-shaped spring tooth 121, a spring-tooth shaft 122, a spring-tooth shaft bracket 123, a spring-tooth chain 124, a picking driven shaft 125, a picking tensioning shaft 126 and a picking driving shaft 127. Figure 11 As shown, the arc-shaped spring teeth 121 are evenly arranged on the spring tooth shaft 122, and the arc-shaped spring teeth 121 on two adjacent spring tooth shafts 122 are staggered. Figure 12As shown, the ends of the spring-tooth shaft 122 are fastened to the outer links of the spring-tooth chain 124 on both sides through the spring-tooth shaft bracket 123. The pickup tensioning shaft 126 is located behind the terminal roller in the drum-type film-soil separation device 10, and forms a certain angle with the plane containing the axis of the pickup driving shaft 127 and the plane containing the axes of the pickup driving shaft 127 and the pickup driven shaft 125.

[0078] like Figure 1 Combine Figure 13 As shown, the travel device 13 is located at the rear lower portion of the frame 3. The travel device 13 includes a travel device center shaft 131, a travel cylinder 132, a tire bracket 133, locking bolts 134, and a tire 135. Both sides of the travel device center shaft 131 are connected to the tire 135 via the tire brackets 133. One end of the travel cylinder 132 is rotatably connected to the frame 3 via a pin, and the other end is connected to the tire bracket 133 via a pin.

[0079] like Figure 14 Combine Figure 15 As shown, the ground clearance of the frame 3 is changed by adjusting the travel oil cylinder 132. The locking bolt 134 is fastened to the frame 3 by a nut. One end of the locking bolt 134 is locked in contact with the tire bracket 133 by adjusting the position of the nut.

[0080] like Figure 2 As shown, the film stripping device 14 is arranged between the arc-shaped spring-tooth chain residual film picking device 12 and the self-adjusting residual film packaging device 15. Figure 16 Combine Figure 17 As shown, the film stripping device 14 includes a film stripping shaft 141, a film stripping brush support 142 and a film stripping brush 143. The film stripping brush 143 is fixed to the film stripping shaft 141 through the film stripping brush support 142. The film stripping device 14 mechanically separates the residual film from the picking device and sends the residual film to the packaging channel.

[0081] like Figures 18-20 As shown, the self-adjustable residual film packaging device 15 includes an upper packaging unit, a lower packaging unit, a tensioning mechanism, a packaging cylinder 159, and a film unloading cylinder. Both the upper and lower packaging units are mounted on a frame 3. A packaging station for residual film packaging is formed between the upper and lower packaging units. The film unloading cylinder is used to drive the upper packaging unit to rotate relative to the lower packaging unit, thereby opening the packaging station.

[0082] The upper strapping unit includes an upper strapping motor 152, a first drive roller, an upper strapping belt 154, a first auxiliary roller, and a first tensioning roller. The first auxiliary roller is connected to the first drive roller via the upper strapping belt 154. The upper strapping motor 152 drives the first drive roller, which in turn rotates the upper strapping belt 154. A tensioning mechanism is located inside the upper strapping belt 154 and applies tension to the upper strapping belt 154 via the first tensioning roller.

[0083] like Figure 18 As shown, the lower strapping unit includes a lower strapping motor 151, a second drive roller, a lower strapping belt 153, a second auxiliary roller, and a second tensioning roller. The second auxiliary roller is connected to the second drive roller via the lower strapping belt 153. The lower strapping motor 151 drives the second drive roller, which in turn rotates the lower strapping belt 153. The strapping cylinder 159 is located outside the lower strapping belt 153 and applies tension to the lower strapping belt 153 via the second tensioning roller.

[0084] like Figure 19 As shown, a packing channel for packing residual film is formed between the upper packing belt 154 and the lower packing belt 153. The upper packing belts 154 on either side of the packing channel move in opposite directions to the movement of the lower packing belt 153. The self-adjusting residual film packing device 15 can automatically adjust the packing pressure and packing speed according to the amount of residual film, ensuring that the residual film is packed into compact blocks for easy transportation and handling.

[0085] The tensioning mechanism includes a bearing seat slide 155, a slider-type seat bearing 156, a bearing seat top rod 158 and a tensioning spring 157 for applying a restoring force to the first tensioning shaft roller. The bearing seat slide 155 is arranged on the mounting plate of the upper packaging unit, the slider-type seat bearing 156 is embedded in the bearing seat slide 155, the end of the first tensioning shaft roller is connected to the slider-type seat bearing 156, the bearing seat top rod 158 is arranged parallel to the bearing seat slide 155, the bearing seat top rod 158 is connected to the side wall of the slider-type seat bearing 156, and the tensioning spring 157 is sleeved on the bearing seat top rod 158.

[0086] like Figure 1 Combine Figure 2 As shown, a soil suppression device 16 is installed below the self-adjusting film packaging device 15. This device 16 comprises a suppression roller, a seated bearing, and a bearing bracket. The two sides of the suppression roller are rotatably connected to the bearing bracket via seated bearings. The bearing bracket is equipped with several holes, and the ground clearance of the suppression roller can be adjusted by adjusting the holes.

[0087] When the rotary tillage and tillage layer residual film recovery and packaging combined device is used, Figure 3 As shown, by being pulled and driven by a tractor, the combined operations of rotary tillage and land preparation before sowing and recovery and packaging of residual film in the soil plow layer can be realized, and the integrated operation technology route of residual film packaging and recycling can realize multiple operation processes such as rotary tillage and soil crushing, film-soil separation, straw removal, residual film picking, film removal and packaging, and soil leveling at one time. It has the advantages of high operation efficiency and low impurity rate in recovered residual film, and can meet various technical indicators for residual film recovery.

[0088] The combined device for rotary tillage and land preparation and plough layer residual film recovery and packaging proposed in the embodiment of the present invention specifically includes the following steps when recovering residual film:

[0089] Rotary tillage, digging and throwing: After the equipment is started, the rotary tillage, digging and throwing device 8 first performs rotary tillage on the soil, loosens the soil through the rotating blades, and exposes the residual film buried in the soil.

[0090] Film-soil separation: the soil and residual film mixture after rotary tillage are sent to the drum-type film-soil separation device 10, and the tillage layer film-soil mixture is further spread and separated by multi-stage shaft rollers respectively provided with racks and toothed discs.

[0091] The residual film is picked up, and the separated residual film then enters the arc-shaped spring-tooth chain residual film picking device 12. Through the movement of the arc-shaped spring-tooth chain, the arc-shaped spring teeth simultaneously pick up the residual film screened out by the film-soil separation mechanism and the residual film that has not been thrown up in the tillage layer, and further clean the residual soil on the residual film.

[0092] Among them, under the action of the arc-shaped spring teeth, it is inevitable that the field straw will be picked up and recovered. The picking and conveying plane will be steepened by the tensioning shaft of the picking device, and the crop straw will fall into the straw discharge device 11 under the action of gravity. The ground wheel 111 on the straw discharge device 11 is in contact with the ground and rotates with the operation of the equipment, thereby driving the spiral blade 113 to rotate to discharge the straw, and the sieve holes of the bottom plate 114 will discharge the soil particles that fall into the device.

[0093] De-filming: The cleaned residual film is sent to the de-filming device 14, which separates the residual film from the picking device through mechanical action and sends the residual film to the packaging channel.

[0094] Residual film packaging, such as Figure 19 Combine Figure 20 As shown, the film residue after stripping enters the self-adjusting film packaging device 15. The upper packaging unit and the lower packaging unit are driven by the upper packaging motor 152 and the lower packaging motor 151 respectively. The friction between the film residue and the strapping belt compresses and packages the film residue. The strapping belt moves in the opposite direction, ensuring that the film residue is tightly compressed in the packaging channel. As the round bale of film residue continues to grow, the tensioning spring 157 of the upper strapping belt 154 is continuously compressed, and the packaging cylinder 159 of the lower strapping belt 153 is continuously stretched until it reaches the limit position.

[0095] After the residual film is unloaded and the packaging is completed, Figure 21 Combine Figure 22 As shown, the film unloading cylinder and the packaging cylinder 159 are driven, the film unloading cylinder extends, the packaging cylinder 159 contracts, the upper packaging unit is lifted up, the lower packaging belt 153 is tensioned, and the film unloading cylinder drives the upper packaging unit to rotate relative to the lower packaging unit, opening the packaging station, and the residual film round bales roll out under the action of gravity.

[0096] For example, when a combined rotary tillage and tillage layer residual film recovery and packaging device proposed in an embodiment of the present invention is in operation, as the traction device is pulled forward, the power components of the traction device transmit power to the transfer case 4 through the transmission shaft, and the transfer case 4 transmits power to the hydraulic pumps 5 on both sides and the rotary tillage components below respectively. The hydraulic pumps 5 on both sides of the transfer case 4 transmit power to the film-soil separation mechanism multi-stage differential roller-type film-soil separation device 10 drive motor, the arc-shaped spring-tooth chain residual film picking device 12 drive motor, and the packaging mechanism drive motor through hydraulic pipelines.

[0097] During the operation, the rotary tillage cutter cuts and crushes the sticky mixture of soil and film residue in the tillage layer from the farmland and throws it to the rear side of the rotary tillage cutter. The roller-type film-soil separation device 10 located at the rear of the rotary tillage cutter further crushes the film-soil mixture under the action of the teeth on the rack shaft roller 104 and throws it backward to the gear disc shaft roller. Under the action of the staggered gear discs of each gear disc shaft roller, the crushed and separated soil particles fall back into the farmland through the gaps between the gear discs, while the film residue is continuously moved backward by the drive of the gear disc teeth until it falls onto the arc-shaped elastic tooth chain film residue picking device 12 located at the rear.

[0098] The film is picked up and recycled under the action of the arc-shaped spring teeth. At the same time, when the arc-shaped spring teeth on the residual film picking device rotate to the bottom, the residual film that has not been thrown up in the soil will be further picked up. The film stripping device 14 located behind the residual film picking device strips the residual film picked up by the spring teeth under the action of the film stripping brush and throws it into the packaging device. Packing is carried out through the friction between the residual film and the packaging belt. As the round bale of residual film continues to increase, the tensioning spring 157 of the upper packaging belt 154 is continuously compressed, and the oil cylinder of the lower packaging belt 153 is continuously stretched until it reaches the limit position. At this time, by driving the film unloading cylinder and the packaging cylinder 159, the film unloading cylinder extends, the packaging cylinder 159 contracts, the upper packaging belt 154 is lifted up, and the lower packaging belt 153 is tightened, and the residual film bale rolls down and is unloaded under the action of gravity.

[0099] Among them, by adjusting the walking cylinder 132, the walking tire can be rotated around the central axis 131 of the walking device, thereby adjusting the depth of the residual film picking spring teeth into the soil. By adjusting the locking bolt 134, the ground clearance of the frame 3 can be locked to prevent the hydraulic cylinder from failing during operation.

[0100] During operation, the curved spring tines of the film collecting device inevitably pick up and recycle crop straw. By providing a tensioning shaft for the collecting device, the collecting and conveying surface can be steepened. Gravity forces the crop straw into the straw discharge device 11. The ground wheel 111 of the straw discharge device 11 contacts the ground and rotates as the device operates, driving the spiral blades 113 to displace the straw. The sieve holes in the bottom plate 114 remove soil particles that fall into the device, reducing the driving resistance of the spiral blades 113.

[0101] According to a preferred embodiment of the present invention, during the use of a combined device for rotary tillage and land preparation and plough layer residual film recovery and packaging, the rotary tillage, digging and throwing device 8 has a soil penetration depth of 100-200mm (adjustable), and can complete the plough layer residual film recovery operation at a depth of 0-200mm. The operating width is 2000mm, and the designed traction speed is about 2-4km / h. Based on an 8-hour workday, about 70 acres of farmland can be completed daily for tillage and residual film recovery. The forming diameter of the self-adjusting residual film packaging device 15 is about 60-80cm, and the linear speed of the packaging belt is about 1.5-2.5m / s. The range of cultivated land area that can be completed in a single packaging is related to the amount of film residue in the plough layer soil of the farmland and the impurity content in the recovered residual film. The specific data needs to be determined according to the actual situation of the farmland.

[0102] A combined device for rotary tillage, land preparation, and plow layer residual film recovery and packaging proposed in an embodiment of the present invention integrates rotary tillage, film-soil separation, residual film picking up, and packaging, realizing the automation of the entire process from soil treatment to residual film recovery, reducing the use of multiple independent devices, and improving work efficiency. The drum-type film-soil separation device 10 can effectively separate the residual film from the soil by rotation and filtration, reducing soil residue on the residual film and improving the recovery quality of the residual film. The arc-shaped spring-tooth chain residual film picking device 12 is uniquely designed and can accurately pick up residual film, reducing the omission of residual film and ensuring the integrity of residual film recovery. The self-adjusting residual film packaging device 15 can automatically adjust the packaging pressure and packaging speed according to the amount of residual film, ensuring that the residual film is packaged into tight blocks for easy transportation and handling. The equipment achieves ease and flexibility of operation through the hydraulic power transmission system and the walking device 13, reducing the labor intensity of the operator. In this way, through efficient recycling and packaging of residual film, environmental pollution in agricultural production is reduced. At the same time, the equipment has high energy utilization efficiency and meets the requirements of energy conservation and environmental protection. Through its integrated design, efficient operation and automated operation, the efficiency and quality of residual film recycling are significantly improved, which helps promote the sustainable development of agricultural production.

[0103] The present invention is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present invention may also have other implementation methods. For those skilled in the art, any technical solutions formed by modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined device for rotary tillage and land preparation and plough layer residual film recovery and packaging, comprising a frame, a hydraulic power transmission system, and a traveling device, wherein the frame is provided with a rotary tillage and digging device, a drum-type film-soil separation device, an arc-shaped spring-tooth chain residual film picking device, and a film stripping device in sequence from front to back along the traction direction of the traveling device, characterized in that: The outlet end of the film stripping device is provided with a self-regulating residual film packaging device; The self-adjusting residual film packaging device includes an upper packaging unit, a lower packaging unit, a tensioning mechanism, a packaging cylinder and a film unloading cylinder. The upper packaging unit and the lower packaging unit are both installed on a frame. A packaging station for residual film packaging is formed between the upper packaging unit and the lower packaging unit. The film unloading cylinder is used to drive the upper packaging unit to rotate relative to the lower packaging unit, thereby opening the packaging station. The upper packing unit includes an upper packing motor, a first drive shaft roller, an upper packing belt, a first auxiliary shaft roller and a first tensioning shaft roller. The first auxiliary shaft roller is connected to the first drive shaft roller through the upper packing belt. The upper packing motor drives the first drive shaft roller to drive the upper packing belt to rotate. The tensioning mechanism is arranged on the inner side of the upper packing belt and applies tension to the upper packing belt through the first tensioning shaft roller. The lower packing unit includes a lower packing motor, a second drive shaft roller, a lower packing belt, a second auxiliary shaft roller and a second tensioning shaft roller. The second auxiliary shaft roller is connected to the second drive shaft roller through the lower packing belt. The lower packing motor drives the second drive shaft roller to drive the lower packing belt to rotate. The packing cylinder is arranged on the outside of the lower packing belt and applies tension to the lower packing belt through the second tensioning shaft roller. A packing channel for packing residual film is formed between the upper packing belt and the lower packing belt, and the movement direction of the upper packing belt on both sides of the packing channel is opposite to that of the lower packing belt; The drum-type film-soil separation device includes a hydraulic motor, a rack shaft roller, a first-level gear disc shaft roller, a second-level gear disc shaft roller and a chain transmission mechanism. The hydraulic motor is installed on the side plate of the drum-type film-soil separation device. The hydraulic motor is connected to the end of the rack shaft roller through a coupling. The rack shaft roller is connected to the first-level gear disc shaft roller and the second-level gear disc shaft roller through a chain transmission mechanism. The rack shaft roller includes a rack roller core shaft, a rack roller rib, a rack roller, a rack and a film retaining ring. The central axis of the rack roller core shaft is rotatably connected to the side plate through a bearing. Racks are evenly distributed on the circumference of the rack roller. Both sides are fixed to the rack roller core shaft through the rack roller rib. The film retaining ring coincides with the central axis of the rack roller core shaft and is respectively fixed to the outer side of the rack roller rib. The secondary geared roller has the same structure as the primary geared roller. The primary geared roller includes a geared roller core shaft, a geared roller rib, a geared roller and a geared disc. The central axis of the geared roller core shaft is rotatably connected to the side plate through a bearing. Geared discs are evenly distributed on the circumference of the geared roller, and both sides are fixed to the geared roller core shaft through the geared roller ribs.

2. The combined equipment for rotary tillage and land preparation and recycling and packaging of residual film in the cultivated layer according to claim 1 is characterized in that: The tensioning mechanism includes a bearing seat slide, a slider-type seat bearing, a bearing seat top rod and a tensioning spring for applying a restoring force to the first tensioning shaft roller. The bearing seat slide is arranged on the mounting plate of the upper packaging unit, the slider-type seat bearing is embedded in the bearing seat slide, the end of the first tensioning shaft roller is connected to the slider-type seat bearing, the bearing seat top rod is arranged parallel to the bearing seat slide, the bearing seat top rod is connected to the side wall of the slider-type seat bearing, and the tensioning spring is sleeved on the bearing seat top rod.

3. The combined equipment for rotary tillage and land preparation and recycling and packaging of residual film in the cultivated layer according to claim 1 is characterized in that: The straw impurity removal device is installed at the rear and lower part of the drum-type membrane-soil separation device. The straw impurity removal device includes a ground wheel, a impurity removal shaft, spiral blades and a bottom plate. The impurity removal shaft is rotatably connected to the frame through a bearing. Spiral blades with equal pitch and opposite rotation direction are installed on the side wall of the impurity removal shaft. A ground wheel is installed at one end of the impurity removal shaft. A bottom plate is installed under the spiral blade, and strip sieve holes are provided on the bottom plate.

4. The combined equipment for rotary tillage and land preparation and recycling and packaging of residual film in the cultivated layer according to claim 1 is characterized in that: The arc-shaped elastic tooth chain type residual film picking device includes an arc-shaped elastic tooth, an elastic tooth shaft, an elastic tooth shaft bracket, an elastic tooth chain, a picking driven shaft, a picking tensioning shaft and a picking active shaft. The arc-shaped elastic teeth are evenly arranged on the elastic tooth shaft, and the arc-shaped elastic teeth on the two adjacent elastic tooth shafts are staggered. The two ends of the elastic tooth shaft are respectively fastened to the outer chain links of the elastic tooth chains on both sides through the elastic tooth shaft bracket. The picking tensioning shaft is located behind the terminal shaft roller in the drum-type film-soil separation device, and forms a certain angle with the plane where the axis of the picking active shaft is located and the plane where the axis of the picking active shaft and the picking driven shaft are located.

5. The combined equipment for rotary tillage and land preparation and recycling and packaging of residual film in the cultivated layer according to claim 1 is characterized in that: The demolding device is arranged between the arc-shaped spring-tooth chain residual film picking device and the self-adjusting residual film packaging device. The demolding device includes a demolding shaft, a demolding brush support and a demolding brush. The demolding brush is fixed on the demolding shaft through the demolding brush support.

6. The combined equipment for rotary tillage and land preparation and recycling and packaging of residual film in the cultivated layer according to claim 1 is characterized in that: A rotary tillage depth limiting device is provided on the front side of the rotary tillage, digging and throwing device.

7. The combined equipment for rotary tillage and land preparation and recycling and packaging of residual film in the cultivated layer according to claim 1 is characterized in that: A soil pressing device is provided below the self-regulating residual film packaging device.

8. The method for recovering residual film according to any one of claims 1 to 7, comprising: Rotary tillage, digging and throwing: After the equipment is started, the rotary tillage, digging and throwing device first performs rotary tillage on the soil, loosening the soil through the rotating blades and exposing the residual film buried in the soil; Film-soil separation: the soil and residual film mixture after rotary tillage are sent to the drum-type film-soil separation device, and the tillage layer film-soil mixture is further spread and separated by multi-stage shaft rollers equipped with racks and toothed discs; Residual film picking up: the separated residual film then enters the arc-shaped spring-tooth chain type residual film picking up device. Through the movement of the arc-shaped spring-tooth chain, the arc-shaped spring teeth simultaneously pick up the residual film screened out by the film-soil separation mechanism and the residual film that has not been thrown up in the tillage layer, and further clean the residual soil on the residual film; De-filming: the cleaned residual film is sent to the de-filming device, which separates the residual film from the picking device through mechanical action and sends the residual film to the packaging channel; Residual film packaging: After film removal, the residual film enters the self-adjusting residual film packaging device. The upper packaging unit and the lower packaging unit are driven by the upper packaging motor and the lower packaging motor respectively. The residual film is compressed and packaged through the friction between the residual film and the packaging belt. The movement direction of the packaging belt is opposite to that of the residual film, ensuring that the residual film is tightly compressed in the packaging channel. As the round bundle of residual film continues to grow, the tensioning spring of the upper packaging belt is continuously compressed, and the packaging cylinder of the lower packaging belt is continuously stretched until it reaches the limit position; The residual film is unloaded. After the packaging is completed, the film unloading cylinder and the packaging cylinder are driven. The film unloading cylinder extends and the packaging cylinder contracts. The upper packaging unit is lifted up and the lower packaging belt is tightened. The film unloading cylinder drives the upper packaging unit to rotate relative to the lower packaging unit, opening the packaging station. The residual film round bale rolls down and is unloaded under the action of gravity.

9. The residual film recovery method of the combined equipment for rotary tillage and tillage layer residual film recovery and packaging according to claim 8 is characterized in that: The process of picking up residual film also includes a straw discharge step. Under the action of the arc-shaped spring teeth, it is inevitable that the field straw will be picked up and recycled. The picking and conveying plane will be steepened through the tensioning shaft of the picking device. The crop straw will fall into the straw discharge device under the action of gravity. The ground wheel on the straw discharge device contacts the ground and rotates with the operation of the equipment, thereby driving the spiral blades to rotate to discharge the straw, and the sieve holes on the bottom plate will discharge the soil particles that fall into the device.

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