Sweeping type pre-sowing cotton field earth surface residual film recycling machine

Abstract

The invention discloses a sweeping type before-sowing cotton field earth surface residual film recycling machine, and relates to the technical field of residual film recycling equipment, the sweeping type before-sowing cotton field earth surface residual film recycling machine comprises a rack main body, the rack main body is sequentially provided with a residual film gathering device, a soil crushing roller, a film throwing device, a conveying device, a residual film screening device and a film collecting box from front to back, and the rack main body is further provided with a transmission device; the residual film gathering device gathers the film-soil mixture to the soil crushing roller; the soil crushing roller is rotationally connected to the rack main body and is used for crushing soil blocks; the film throwing device is used for conveying the film-soil mixture crushed by the soil crushing roller to the conveying device behind; the conveying device is used for conveying the film-soil mixture to an inlet of the residual film screening device; the residual film screening device comprises a screening conveying roller, and residual films in the screening conveying roller can be collected into a film collecting box; the transmission device is used for driving the residual film gathering device, the film throwing device, the conveying device and the residual film screening device to operate. The plastic film residue recycling device can recycle plastic film residues on the earth surface, and is small in breadth and low in power consumption.

Description

Technical Field

[0001] The invention relates to the technical field of residual film recovery equipment, in particular to a sweeping type residual film recovery machine on the surface of a cotton field before sowing. Background Art

[0002] As an important agronomic measure in agricultural production, mulching technology has achieved the dual effects of increasing farmers' income and agricultural efficiency due to its functions of increasing temperature, retaining soil moisture, preventing diseases and insects, and suppressing weeds. However, due to farmers' heavy use of mulch and neglect of recycling, the problem of mulch residue has become increasingly prominent, becoming an important factor affecting the sustainable development of agriculture.

[0003] Mechanized film recovery has become an important means of film recovery in my country due to its high efficiency and low labor intensity. Film recovery equipment can be divided into seedling film recovery machines, pre-tillage film recovery machines and pre-sowing film recovery machines according to different recovery periods. Limited by the clean-up rate of pre-tillage film recovery machines, a large amount of film is still retained in the cotton field. After tillage, the film is irregularly half-covered on the surface of the cotton field. Recycling the fine film on the surface before sowing can prevent the film from penetrating into the tillage layer with the increase of years, which increases the difficulty of recovery. It is of great significance to promote the mechanized recovery of film.

[0004] At present, domestic research on residual film recovery focuses on the recovery of residual film before tillage. The residual film recovery system before sowing is not perfect and is affected by human factors (such as rotary tillage) and natural factors (such as light, temperature, water, air, heat, etc. in the cotton field). The residual film on the surface of the cotton field before sowing has poor mechanical properties and is severely fragmented, making it difficult to pick up the residual film from the ground. Faced with this situation, it is very important to reliably pick up and recover the fragmented residual film on the surface of the cotton field before sowing in spring.

[0005] Currently, pre-sowing residual film recycling machines are used to recycle the irregularly distributed fine residual film in farmland. Most of them solve the problem of film recycling by setting a wide operating size. Although the picking rate is relatively high, there are problems such as large machine size and high power consumption.

[0006] Therefore, how to design a machine for recovering residual film on the surface of cotton fields before sowing and reduce the power consumption of the whole machine while ensuring the residual film recovery rate has become an urgent problem to be solved by technicians in this field. Summary of the invention

[0007] The purpose of the present invention is to provide a sweeping type pre-sowing cotton field surface residual film recovery machine to solve the problems existing in the above-mentioned prior art. A residual film gathering device is provided to gather the residual film into strips, thereby avoiding the problems of large width and high power consumption of the residual film recovery machine.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] The present invention discloses a sweeping type pre-sowing cotton field surface residual film recovery machine, comprising a frame body, the frame body is provided with a residual film gathering device, a soil crushing roller, a film throwing device, a conveying device, a residual film screening device and a film collecting box in sequence from front to back, a plurality of walking wheels are provided at the lower end of the frame body, and a transmission device is also provided on the frame body;

[0010] The residual film gathering devices are provided with two, and the two residual film gathering devices are respectively arranged at both sides of the front end of the frame body, and the residual film gathering devices are used to gather the film-soil mixture to the soil crushing roller at the rear;

[0011] The soil crushing roller is rotatably connected to the frame body, and soil crushing teeth are arranged on the side wall of the soil crushing roller. The soil crushing roller is used to crush soil lumps;

[0012] The film throwing device is used to transport the film soil mixture crushed by the soil crushing roller to the conveying device at the rear;

[0013] The conveying device is used to convey the film-soil mixture to the inlet of the residual film screening device;

[0014] The residual film screening device comprises a screening conveying drum, a plurality of screening holes are arranged on the side wall of the screening conveying drum, soil in the film-soil mixture can fall out from the screening holes, and the residual film in the screening conveying drum will be collected in the film collecting box;

[0015] The power input end of the transmission device is connected to the power output end of the traction equipment, and the transmission device is used to drive the residual film gathering device, the film throwing device, the conveying device and the residual film screening device to operate.

[0016] Preferably, the transmission device includes a first gearbox, the input shaft of the first gearbox is connected to the output shaft of the traction equipment, the output shafts on both sides of the first gearbox are respectively connected to a first power output shaft, and the end of the first power output shaft away from the first gearbox is connected to one of the residual film gathering devices.

[0017] Preferably, the residual film gathering device comprises a gathering rotation main shaft, a driving bevel gear is provided on the first power output shaft, a driven bevel gear is provided on the upper end of the gathering rotation main shaft, the driving bevel gear and the driven bevel gear are meshed, the lower end of the gathering rotation main shaft is connected to an upper rotating plate, a plurality of film holding arms are provided in the circumferential direction of the upper rotating plate, each of the film holding arms is fixed with a rigid brush and a plurality of elastic racks, and the elastic racks are spaced and distributed on one side of the rigid brush;

[0018] The residual film gathering device also includes a lower support plate, which is fixed on the frame body. The upper end of the lower support plate is provided with a sliding track, and the film holding arm slides in the sliding track. The sliding track includes a straight line segment and an arc segment.

[0019] Preferably, the transmission device further comprises a second power output shaft, the second power output shaft is rotatably connected to the frame body, the first power output shaft is provided with a first driving pulley, the second power output shaft is provided with a first driven pulley, and the first driving pulley and the first driven pulley are connected to each other through a first transmission belt;

[0020] The second power output shaft is also provided with a first driving sprocket, and the first driving sprocket is used for transmission connection with the film throwing device.

[0021] Preferably, the film-blasting device comprises a film-blasting shaft, the film-blasting shaft is rotatably connected to the frame body, a film-blasting roller is arranged on the outer side of the film-blasting shaft, and a plurality of film-blasting blades are evenly distributed on the outer wall of the film-blasting roller;

[0022] A first driven sprocket is provided at one end of the film polishing shaft, and the first driving sprocket and the first driven sprocket are connected through a first chain transmission.

[0023] Preferably, the conveying device comprises a driving rear axle and a driven front axle, a second driving sprocket is respectively provided at both ends of the driving rear axle, a second driven sprocket is respectively provided at both ends of the driven front axle, the second driving sprocket and the second driven sprocket are connected by a second chain, and a plurality of chain rods are fixed at intervals between two of the second chains;

[0024] The second power output shaft is provided with a second driving pulley, the driving rear shaft is provided with a second driven pulley, and the second driving pulley is connected to the second driven pulley via a second transmission belt.

[0025] Preferably, the transmission device further comprises a second gearbox, the input end of the second gearbox is transmission-connected to one end of the second power output shaft, and the output end of the second gearbox is transmission-connected to the residual film screening device via a universal joint.

[0026] Preferably, the residual film screening device comprises two roller shafts, which are rotatably arranged on both sides of the screening conveying drum, respectively, one of which is connected to the universal joint and is provided with a third driving sprocket, and the other roller shaft is provided with a third driven sprocket, and the third driving sprocket and the third driven sprocket are connected through a third chain transmission;

[0027] Each of the roller shafts is connected to a front roller, which is rotatably connected to the frame body, and the two front rollers are respectively located at both sides of the front end of the screening conveying drum, and a rear roller is respectively provided at both sides of the rear end of the screening conveying drum, and a roller assembly is provided on the outer side of the front roller and the rear roller, and the roller assembly is against the outer wall of the screening conveying drum;

[0028] The inner wall of the screening and conveying drum is provided with spiral blades.

[0029] Preferably, both the front and rear ends of the screening conveying drum are sleeved with port rings, a plurality of supporting roller raceways are provided on the port rings, and the supporting roller assembly is located in the supporting roller raceways.

[0030] Preferably, the side wall of the film collecting box is hinged with a hinged rod and a hydraulic cylinder, and the other ends of the hinged rod and the hydraulic cylinder are both hinged to the frame body.

[0031] Compared with the prior art, the present invention has achieved the following technical effects:

[0032] The present invention proposes a sweeping type pre-sowing cotton field surface residual film recovery machine, which has a novel and reasonable structure. By arranging a residual film gathering device, a soil crushing roller, a film throwing device, a residual film screening device and a film collecting box, the residual film recovery machine is towed by a tractor to realize the sweeping and collecting of the broken film in the farmland, the screening and cleaning, and the film collecting and unloading operations at one time.

[0033] The specific innovation is that the residual film on the surface before sowing is irregularly scattered in the field and the size is mostly distributed in the range of 5 to 25 cm. 2 In view of the characteristics within the range, the residual film gathering device is horizontally rotated and the composite motion law of spatial angle change is adopted to gather the residual film on the surface into strips, so as to reduce the width of the residual film recovery machine picking up and cleaning the debris and reduce energy consumption. In view of the fact that the soil before sowing is relatively loose, a self-rotating film-throwing blade is set to achieve the purpose of throwing the film-soil mixture to the residual film screening device along with the film-throwing blade, which solves the problem that the traditional screening residual film recovery machine has a good effect of recovering broken film, but the resistance of the soil shovel to lift the residual film is large and requires high-horsepower equipment to pull. The present invention takes into account the characteristics of the traditional sieve hole drum that can effectively separate materials of different particle sizes during rotation, and in combination with the characteristics that the residual film is soft and easy to entangle, a shaftless drum screen is set, and the front roller and the rear roller are used to limit the axial and radial position of the screening and conveying drum, and the front roller transmits power to drive the screening and conveying drum to rotate at different speeds, so as to achieve the purpose of residual film cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of a sweeping type pre-sowing cotton field surface residual film recovery machine according to an embodiment of the present invention;

[0036] Figure 2 It is a top view of a sweeping type pre-sowing cotton field surface residual film recovery machine according to an embodiment of the present invention;

[0037] Figure 3 It is a structural schematic diagram of a residual film gathering device in a sweeping type pre-sowing cotton field surface residual film recovery machine according to an embodiment of the present invention;

[0038] Figure 4 It is a partial enlarged view of the residual film gathering device in the sweeping type pre-sowing cotton field surface residual film recovery machine according to the embodiment of the present invention;

[0039] Figure 5 It is a structural schematic diagram of a film throwing device in a sweeping type pre-sowing cotton field surface residual film recovery machine according to an embodiment of the present invention;

[0040] Figure 6 It is a structural schematic diagram of a conveying device in a sweeping type pre-sowing cotton field surface residual film recovery machine according to an embodiment of the present invention;

[0041] Figure 7 It is a structural schematic diagram of a residual film screening device in a sweeping type pre-sowing cotton field surface residual film recovery machine according to an embodiment of the present invention;

[0042] In the figure: 1-travel wheel; 2-second gear box; 3-first driving sprocket; 4-first driven sprocket; 5-roller shaft; 6-third driving sprocket; 7-hydraulic cylinder; 8-film collecting box; 9-first power output shaft; 10-first gear box; 11-frame body; 12-first driving pulley; 13-first driven pulley; 14-second power output shaft; 15-third driven sprocket; 16-gathering rotation main shaft; 17-film holding arm; 18-sliding track; 19-rigid brush; 20-elastic rack; 21-lower support plate; 22-upper rotating plate; 23-film-polishing roller; 24-film-polishing shaft; 25-film-polishing blade; 26-screening conveying drum; 27-port ring; 28-front roller; 29-rear roller; 30-supporting roller assembly; 31-supporting roller track; 32-spiral blade; 33-soil-breaking roller; 34-chain rod; 35-second driven sprocket; 36-driven front axle; 37-second chain; 38-second driving sprocket; 39-driving rear axle; 40-second driving pulley; 41-second driven pulley. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The purpose of the present invention is to provide a sweeping type pre-sowing cotton field surface residual film recovery machine to solve the problems existing in the above-mentioned prior art. A residual film gathering device is provided to gather the residual film into strips, thereby avoiding the problems of large width and high power consumption of the residual film recovery machine.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] like Figure 1-Figure 7 As shown, this embodiment provides a sweeping type pre-sowing cotton field surface residual film recovery machine, including a frame body 11. The frame body 11 is a common frame structure, and its function is to support various components. The frame body 11 is provided with a residual film gathering device, a soil crushing roller 33, a film throwing device, a conveying device, a residual film screening device and a film collecting box 8 from front to back. In this embodiment, the end close to the traction device is the front end. The lower end of the frame body 11 is provided with a plurality of walking wheels 1. The walking wheels 1 can adopt the existing common wheel structure. In order to be able to travel better on the land, a shock absorber can also be installed between the frame body 11 and the walking wheels 1 to reduce the vibration of the frame body 11. The frame body 11 is also provided with a transmission device.

[0047] There are two residual film gathering devices, which are respectively arranged at both sides of the front end of the frame body 11. The residual film gathering devices are used to gather the film-soil mixture to the soil crushing roller 33 at the rear.

[0048] The two ends of the soil crushing roller 33 are rotatably connected to the frame body 11 through the bearing seat. The side wall of the soil crushing roller 33 is provided with soil crushing teeth. The soil crushing roller 33 itself has no other power input, and it rotates by contacting the ground. The soil crushing roller 33 can be used to crush soil clods during the rotation process. This avoids the problem of increased impurity rate of residual film due to excessive soil clods being blocked in the gap when the subsequent residual film screening device screens the film-soil mixture, thereby further improving the overall screening performance of the device.

[0049] The film throwing device is used to convey the film soil mixture crushed by the soil crushing roller 33 to the conveying device at the rear.

[0050] The conveying device is used to convey the film-soil mixture to the inlet of the residual film screening device;

[0051] The residual film screening device includes a screening conveying drum 26 , and a plurality of screening holes are arranged on the side wall of the screening conveying drum 26 . Soil in the film-soil mixture can fall out from the screening holes, and the residual film in the screening conveying drum 26 will be collected in the film collecting box 8 .

[0052] The power input end of the transmission device is connected to the power output end of the traction device. The traction device can adopt an existing tractor. The transmission device is used to drive the residual film gathering device, the film throwing device, the conveying device and the residual film screening device to operate.

[0053] In actual use, the traction equipment pulls the sweeping type pre-sowing cotton field surface residual film recovery machine into the working area, and as the traction equipment moves forward. The power component of the traction equipment transmits power to the transmission mechanism, driving the residual film gathering device to operate, and the residual film gathering device gathers the residual film on both sides into strips. Then, when the soil crushing roller 33 behind it passes by, it will crush the larger soil blocks. The transmission device transmits power to the film throwing device, and the film throwing device lifts the collected film-soil mixture and throws it to the conveying device at the rear, and then the conveying device conveys the film-soil mixture to the inlet end of the residual film screening device. When the transmission device transmits power to the residual film screening device, the screening and conveying drum 26 rotates to separate the finely broken residual film and impurities, and transports the residual film to the film collecting box 8.

[0054] In this embodiment, if Figure 1 As shown, the transmission device includes a first gearbox 10, and the input shaft of the first gearbox 10 is connected to the output shaft of the traction device (i.e., the power output of the tractor, which is the prior art) through a coupling. The output shafts on both sides of the first gearbox 10 are respectively connected to a first power output shaft 9, and the end of the first power output shaft 9 away from the first gearbox 10 is connected to a residual film gathering device, thereby achieving the technical effect that the output end of the traction device drives the residual film gathering device to operate through the transmission device, and no other additional power source is required, thereby achieving the purpose of reducing energy consumption.

[0055] In this embodiment, if Figure 3-Figure 4 As shown, the residual film gathering device includes a gathering rotation main shaft 16, a driving bevel gear is provided on the first power output shaft 9, and a driven bevel gear is provided on the upper end of the gathering rotation main shaft 16. The driving bevel gear and the driven bevel gear are meshed to realize the direction-changing transmission, and convert the horizontal rotation into the vertical rotation. The lower end of the gathering rotation main shaft 16 is connected to the upper rotating plate 22, and the upper rotating plate 22 is provided with a plurality of film holding arms 17 in the circumferential direction. Figure 4 As can be seen from the figure, the lower end of the upper rotating plate 22 is evenly distributed with limiting plates in the circumferential direction, and each film holding arm 17 will pass through two limiting plates in sequence, so as to further improve the fixing effect of the film holding arm 17. Figure 3 As shown, each film holding arm 17 is fixed with a rigid brush 19 and a plurality of elastic racks 20, and each elastic rack 20 is distributed at intervals on one side of the rigid brush 19. When cleaning the film-soil mixture, the elastic rack 20 cleans the film-soil mixture first, and then the rigid brush 19 cleans it (it can be understood that along the rotation direction of the film holding arm 17, the elastic rack 20 contacts the film-soil mixture before the rigid brush 19). The advantage of such a setting is to avoid the problem that the rigid brush 19 is prone to deformation when directly contacting the large volume of the film-soil mixture. Furthermore, each film holding arm 17 is provided with a plurality of brush connectors, which can be clamps or annular connectors, etc., and their purpose is to fix the rigid brush 19 and the elastic rack 20. Those skilled in the art can select any existing connector that can fix the rigid brush 19 according to needs.

[0056] The residual film gathering device also includes a lower support plate 21, and a slide groove matching the limit plate can be further provided on the upper surface of the lower support plate 21, so that the limit plate can slide in the slide groove. The lower support plate 21 is fixed on the frame body 11, and a closed-loop sliding track 18 is provided at the upper end of the lower support plate 21. A slide bar is provided on the film holding arm 17, and the slide bar on the film holding arm 17 can slide in the sliding track 18. The sliding track 18 includes a straight line segment and an arc segment. The straight line segment and the arc segment are provided because, during the rotation of the film holding arm 17, the film-soil mixture on both sides will be swept to the middle of the two frame bodies 11 by the rigid brush 19. In this process, the slide bar is in the straight line segment, and the rigid brush 19 is in contact with the ground and in a bent state. When the two rigid brushes 19 sweep the film-soil mixture to the middle position, the slide bar enters the arc segment at this time, and the slide bar drives the film holding arm 17 to move upward, so that the rigid brush 19 does not contact the ground, and the film-soil mixture will not be further cleaned. The purpose of designing like this is to avoid sweeping the film-soil mixture that has been swept to the middle of the frame body 11 to both sides again.

[0057] With such arrangement, the rigid brush 19 and the elastic rack 20 are used to rotate, sweep, and gather the strips, thereby effectively moving the fine fragmented residual film in the area, thereby reducing the size of the soil crushing roller 33, the film throwing device, and the residual film screening device, and reducing energy consumption.

[0058] In this embodiment, if Figure 1As shown, the transmission device also includes a second power output shaft 14, which is arranged parallel to the first power output shaft 9 and is located above and behind the first power output shaft 9. Both ends of the second power output shaft 14 are rotatably connected to the frame body 11 through bearing seats. The first power output shaft 9 is provided with a first driving pulley 12, and the second power output shaft 14 is provided with a first driven pulley 13. The first driving pulley 12 and the first driven pulley 13 are connected by a first transmission belt, and the first transmission belt adopts an existing V-belt. The purpose of this arrangement is that when the first power output shaft 9 rotates, the second power output shaft 14 can be driven to rotate by the first driving pulley 12, the first transmission belt and the first driven pulley 13.

[0059] The second power output shaft 14 is also provided with a first driving sprocket 3, which is used for transmission connection with the film throwing device. When the second power output shaft 14 rotates, the film throwing device is driven to operate.

[0060] In this embodiment, if Figure 5 As shown, the film-blasting device includes a film-blasting shaft 24, and both ends of the film-blasting shaft 24 are rotatably connected to the frame body 11 through bearing seats. A film-blasting roller 23 is sleeved on the outer side of the film-blasting shaft 24, and a plurality of film-blasting blades 25 are evenly distributed in the circumferential direction of the outer wall of the film-blasting roller 23.

[0061] A first driven sprocket 4 is provided at one end of the film throwing shaft 24, and the first driving sprocket 3 and the first driven sprocket 4 are connected through a first chain transmission. When the second power output shaft 14 rotates, the film throwing shaft 24 will be driven to rotate through the first driving sprocket 3, the first chain and the first driven sprocket 4.

[0062] With such arrangement, the film-soil mixture can be thrown to the front end of the conveying device by utilizing its own rotation, thus avoiding the problem of large resistance to soil entry and increased power consumption caused by the use of a shovel-screen residual film recovery machine to lift the residual film.

[0063] In this embodiment, if Figure 7 As shown, the conveying device includes a driving rear axle 39 and a driven front axle 36, and the driving rear axle 39 and the driven front axle 36 are both rotatably connected to the frame body 11 through bearings, and the driving rear axle 39 is located at the rear and upper part of the driven front axle 36. A second driving sprocket 38 is respectively provided at both ends of the driving rear axle 39, and a second driven sprocket 35 is respectively provided at both ends of the driven front axle 36, and the two second driven sprockets 35 and the two second driving sprockets 38 are correspondingly arranged, and the second driving sprocket 38 and the corresponding second driven sprocket 35 are connected by a second chain 37. In addition, a plurality of chain rods 34 are fixed at intervals between the two second chains 37, and when the second chain 37 is running, the chain rods 34 are used to convey the film-soil mixture in the front to the rear.

[0064] In order to drive the rear axle 39 to operate, a second driving pulley 40 is provided on the second power output shaft 14, and a second driven pulley 41 is provided on the rear axle 39. The second driving pulley 40 and the second driven pulley 41 are connected via a second transmission belt.

[0065] In actual use, when the second power output shaft 14 rotates, it will drive the second driven pulley 41 and the driving rear axle 39 through the second driving pulley 40 and the second transmission belt, and then the driving rear axle 39 will drive the second chain 37 and the chain rod 34 to operate, thereby transporting the film-soil mixture from the film throwing device to the residual film screening device at the rear.

[0066] In this embodiment, if Figure 1 As shown, the transmission device also includes a second gear box 2, which is fixed to the frame body 11. The input end of the second gear box 2 is transmission-connected to one end of the second power output shaft 14, and the output end of the second gear box 2 is transmission-connected to the residual film screening device through a universal joint, so that the second gear box 2 can transmit the power of the second power output shaft 14 to the residual film screening device.

[0067] In this embodiment, if Figure 7 As shown, the residual film screening device includes two roller shafts 5, which are rotatably arranged on both sides of the screening conveying drum 26 through bearing seats. One of the roller shafts 5 is connected to the universal joint and is provided with a third driving sprocket 6, and the other roller shaft 5 is provided with a third driven sprocket 15. The third driving sprocket 6 and the third driven sprocket 15 are connected through a third chain transmission, that is, the roller shaft 5 connected to the universal joint will drive the other roller shaft 5 to rotate through the third driving sprocket 6, the third chain and the third driven sprocket 15, and finally the two roller shafts 5 rotate synchronously and in opposite directions.

[0068] Each roller shaft 5 is connected to a front roller 28, which is rotatably connected to the frame body 11 through a bearing seat. It is not difficult to imagine that the two front rollers 28 are respectively located on both sides of the front end of the screening conveying drum 26. A rear roller 29 is respectively provided on both sides of the rear end of the screening conveying drum 26. Similarly, the rear roller 29 is also rotatably set on the frame body 11 through a bearing seat, and no connection device is set between the front roller 28 and the rear roller 29. A wheel assembly 30 is provided on the outside of the front roller 28 and the rear roller 29. The wheel assembly 30 includes two or more wheels, and the wheel assembly 30 is against the outer wall of the screening conveying drum 26. In addition, the screening conveying drum 26 is preferably arranged at an angle, and the front is higher and the rear is lower, so as to facilitate the separation of film soil.

[0069] In addition, the inner wall of the screening and conveying drum 26 is also provided with spiral blades 32, the purpose of which is to enable the film-soil mixture in the screening and conveying drum 26 to be transported to the rear more quickly.

[0070] In actual use, the power from the second gear box 2 is transmitted to the front roller 28 and the upper roller assembly 30 through the roller shaft 5 to rotate, thereby driving the screening conveying drum 26 to rotate. The rear roller 29 and the upper roller assembly 30 mainly play a supporting role for the screening conveying drum 26.

[0071] In this way, the screening conveying roller 26 can adjust the size of the screening holes to separate impurities such as soil particles and 5 cm 2 The above-sized residual films are separated, thereby reducing the impurity rate of the residual films.

[0072] In this embodiment, the front and rear ends of the screening conveying drum 26 are both provided with port rings 27, and a plurality of roller raceways 31 are provided on the port rings 27. The number of roller raceways 31 is the same as the number of rollers in the roller assembly 30 and the positions correspond one to one, so that the roller assembly 30 can be located in the roller raceways 31 and offset therefrom.

[0073] In this embodiment, the side wall of the film collecting box 8 is hinged with one end of a hinged rod and one end of a hydraulic cylinder 7 , and the other end of the hinged rod and the other end of the hydraulic cylinder 7 are both hinged to the frame body 11 .

[0074] In actual use, the tilt angle of the film collecting box 8 can be adjusted by controlling the extension and contraction of the hydraulic cylinder 7, thereby completing the work of film collecting and film pouring.

[0075] In addition, the film collecting box 8 is provided with a plurality of soil discharge holes, so that the soil that mistakenly enters the film collecting box 8 can fall out from the soil discharge holes, thereby achieving the final separation of film and soil.

[0076] In this embodiment, a connecting frame is provided at the front end of the frame body 11, and the staff realizes connection with the traction equipment through the connecting frame.

[0077] This embodiment also provides a working process of a sweeping type pre-sowing cotton field surface residual film recovery machine, which is specifically as follows:

[0078] In actual operation, the tractor pulls the sweeping type pre-sowing cotton field surface residual film recovery machine to operate in the field, and the tractor output shaft is connected to the first power output shaft 9 and transmits power to the residual film gathering device, the film throwing device and the residual film screening device in sequence. When the power is transmitted to the residual film gathering device, the rigid brush 19 at the end rotates and embeds into the surface soil, driving the shallow soil and residual film to move. When the rigid brush 19 rotates to the middle position of the frame body 11, the slide bar will enter the arc segment, so that the rigid brush 19 no longer contacts the ground, so that the film soil mixture is kept in the middle position of the frame body 11, and the residual film is collected. The crushing roller crushes the larger soil blocks in the film soil mixture after the strips are collected, and the power is transmitted to the film throwing device. At this time, the film throwing blade 25 rotates at a high speed, contacts the film soil mixture after the strips are collected on the ground, and throws it to a certain vertical height and horizontal height until it reaches the front end of the conveying device, and then the conveying device conveys the film soil mixture to the entrance end of the residual film screening device. The power is transmitted to the residual film screening device, and the rotation of the front roller 28 drives the screening conveying drum 26 to rotate. Since the material collected and transported to the inside of the screening conveying drum 26 is composed of fine particles such as residual film and soil, and the soil particles are smaller in mass and size than the residual film on the surface, they will fall through the screening holes of the screening conveying drum 26, thereby separating the residual film from impurities. Finally, the residual film is sent to the inside of the film collecting box 8 after the impurities are removed.

[0079] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A sweeping type pre-sowing cotton field surface residual film recovery machine, characterized in that: It includes a frame body, which is provided with a residual film gathering device, a soil crushing roller, a film throwing device, a conveying device, a residual film screening device and a film collecting box in sequence from front to back, a plurality of walking wheels are provided at the lower end of the frame body, and a transmission device is also provided on the frame body; The residual film gathering devices are provided with two, and the two residual film gathering devices are respectively arranged at both sides of the front end of the frame body, and the residual film gathering devices are used to gather the film-soil mixture to the soil crushing roller at the rear; The soil crushing roller is rotatably connected to the frame body, and soil crushing teeth are arranged on the side wall of the soil crushing roller. The soil crushing roller is used to crush soil lumps; The film throwing device is used to transport the film soil mixture crushed by the soil crushing roller to the conveying device at the rear; The conveying device is used to convey the film-soil mixture to the inlet of the residual film screening device; The residual film screening device comprises a screening conveying drum, a plurality of screening holes are arranged on the side wall of the screening conveying drum, soil in the film-soil mixture can fall out from the screening holes, and the residual film in the screening conveying drum will be collected in the film collecting box; The power input end of the transmission device is connected to the power output end of the traction equipment, and the transmission device is used to drive the residual film gathering device, the film throwing device, the conveying device and the residual film screening device to operate.

2. The sweeping type pre-sowing cotton field surface residual film recovery machine according to claim 1 is characterized in that: The transmission device includes a first gearbox, the input shaft of the first gearbox is connected to the output shaft of the traction equipment, the output shafts on both sides of the first gearbox are respectively connected to a first power output shaft, and the end of the first power output shaft away from the first gearbox is connected to one of the residual film gathering devices.

3. The sweeping type pre-sowing cotton field surface residual film recovery machine according to claim 2 is characterized in that: The residual film gathering device comprises a gathering rotation main shaft, a driving bevel gear is arranged on the first power output shaft, a driven bevel gear is arranged on the upper end of the gathering rotation main shaft, the driving bevel gear and the driven bevel gear are meshed, an upper rotating plate is connected to the lower end of the gathering rotation main shaft, a plurality of film holding arms are arranged in the circumferential direction of the upper rotating plate, each of the film holding arms is fixed with a rigid brush and a plurality of elastic racks, and each of the elastic racks is spaced and distributed on one side of the rigid brush; The residual film gathering device also includes a lower support plate, which is fixed on the frame body. The upper end of the lower support plate is provided with a sliding track, and the film holding arm slides in the sliding track. The sliding track includes a straight line segment and an arc segment.

4. The sweeping type pre-sowing cotton field surface residual film recovery machine according to claim 2 is characterized in that: The transmission device further comprises a second power output shaft, the second power output shaft is rotatably connected to the frame body, the first power output shaft is provided with a first driving pulley, the second power output shaft is provided with a first driven pulley, and the first driving pulley and the first driven pulley are connected to each other through a first transmission belt; The second power output shaft is also provided with a first driving sprocket, and the first driving sprocket is used for transmission connection with the film throwing device.

5. The sweeping type pre-sowing cotton field surface residual film recovery machine according to claim 4 is characterized in that: The film-blasting device comprises a film-blasting shaft, which is rotatably connected to the frame body, a film-blasting roller is arranged on the outer side of the film-blasting shaft, and a plurality of film-blasting blades are evenly distributed on the outer wall of the film-blasting roller; A first driven sprocket is provided at one end of the film polishing shaft, and the first driving sprocket and the first driven sprocket are connected through a first chain transmission.

6. The sweeping type pre-sowing cotton field surface residual film recovery machine according to claim 4 is characterized in that: The conveying device comprises a driving rear axle and a driven front axle, the two ends of the driving rear axle are respectively provided with a second driving sprocket, the two ends of the driven front axle are respectively provided with a second driven sprocket, the second driving sprocket and the second driven sprocket are connected by a second chain, and a plurality of chain rods are fixed between the two second chains; The second power output shaft is provided with a second driving pulley, the driving rear shaft is provided with a second driven pulley, and the second driving pulley is connected to the second driven pulley via a second transmission belt.

7. The sweeping type pre-sowing cotton field surface residual film recovery machine according to claim 4 is characterized in that: The transmission device also includes a second gear box, the input end of the second gear box is transmission-connected to one end of the second power output shaft, and the output end of the second gear box is transmission-connected to the residual film screening device via a universal joint.

8. The sweeping type pre-sowing cotton field surface residual film recovery machine according to claim 7 is characterized in that: The residual film screening device comprises two roller shafts, which are rotatably arranged on both sides of the screening conveying drum, respectively, one of which is connected to the universal joint and is provided with a third driving sprocket, and the other roller shaft is provided with a third driven sprocket, and the third driving sprocket and the third driven sprocket are connected through a third chain transmission; Each of the roller shafts is connected to a front roller, which is rotatably connected to the frame body, and the two front rollers are respectively located at both sides of the front end of the screening conveying drum, and a rear roller is respectively provided at both sides of the rear end of the screening conveying drum, and a roller assembly is provided on the outer side of the front roller and the rear roller, and the roller assembly is against the outer wall of the screening conveying drum; The inner wall of the screening and conveying drum is provided with spiral blades.

9. The sweeping type pre-sowing cotton field surface residual film recovery machine according to claim 8, characterized in that: Port rings are sleeved on both the front and rear ends of the screening conveying drum, a plurality of supporting roller raceways are arranged on the port rings, and the supporting roller assembly is located in the supporting roller raceways.

10. The sweeping type pre-sowing cotton field surface residual film recovery machine according to claim 1, characterized in that: The side wall of the film collecting box is hinged with a hinge rod and a hydraulic cylinder, and the other ends of the hinge rod and the hydraulic cylinder are both hinged on the frame body.

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