Double-roller spiral sheet meshing anti-blocking device

Abstract

The invention relates to the technical field of agricultural machinery, and discloses a double-roller spiral sheet meshing anti-blocking device which is characterized in that the output end of an intelligent variable-speed motor is in transmission connection with spiral sheet double rollers which synchronously and reversely rotate through a connecting sleeve, and the two ends of the spiral sheet double rollers are mounted on a shovel handle through sealing bearings; the spiral piece double rollers comprise a driving spiral piece roller and a driven spiral piece roller which are installed side by side, the driving spiral piece roller comprises a driving roller shaft, and right-handed spiral pieces are fixed to the periphery of the driving roller shaft; the driven spiral piece roller comprises a driven roller shaft, and a left-hand spiral piece is fixed to the periphery of the driven roller shaft. The upper ends of the driving roller shaft and the driven roller shaft are in key connection with mutually meshed gears; the left-handed spiral piece and the right-handed spiral piece are meshed with each other to form shearing, and the meshing point moves up and down along with rotation of the spiral pieces. The device automatically adjusts the rotation speed of the double rollers of the spiral sheet according to the blockage degree of the furrow opener, intelligently solves the blockage problem of the furrow opener, and improves the seeding trafficability and the operation quality.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a seed drill, and specifically to a double-roller spiral blade meshing anti-blocking device. Background Art

[0002] In the operation of the seeder, the seeder is an important agricultural machine. The furrow opener is an important part of the seeder. In actual use, the seeder is prone to clogging of crop residues at the furrow opening device due to the entanglement of plant straw, weeds and other fiber materials, which affects the efficiency of furrowing and sowing. This is a common sowing technical problem that directly affects the sowing passability, sowing quality and operation efficiency. Especially in the sowing operation of the plot after the full amount of straw is returned to the field, the clogging of the furrow opening device is more serious. Therefore, the technology to prevent the clogging of the furrow opening device has become a key technology to improve the sowing passability, reliability and operation efficiency.

[0003] The existing simple anti-blocking devices mainly include horizontal double star wheel ridge dividing devices, horizontal double disc ridge dividing devices, horizontal corrugated single disc cutting devices, vertical cylindrical free-rotating rollers and other technical forms. In production practice, most of the above devices can only be applied to shorter weeds, relatively small crop straws and a small amount of fiber. The active anti-blocking ability is poor, resulting in poor sowing passability, poor reliability, poor sowing quality, and still easy to cause blockage.

[0004] Patent application CN 108464090 A discloses "a no-till seeder with an active anti-entanglement furrowing device", which provides an active anti-entanglement furrowing device. The technology uses a constant speed and directional mechanical drive to rotate the anti-entanglement and weeding component, and the anti-entanglement and weeding component uses an Archimedean spiral weeding curved surface that is small at the top and large at the bottom. In this device, since the anti-entanglement and weeding component is a mechanically driven fixed-speed, directional rotating component, it can only push away the blocking debris in front of the furrowing device in one direction. When the longer crop stubble, with one side long and the other short, is entangled on the anti-entanglement and weeding component, it causes more blockage on one side of the furrowing device and less blockage on the other side, and the blocking resistance increases. The Archimedean spiral weeding curved surface does not have the ability to shear the entangled debris, and only relies on the rotational friction to push the crop stubble from the long side to the short side. In other words, if the anti-entanglement and weeding component does not change the direction, it is obviously difficult to push more blockages on one side of the furrowing device to the other side. In addition, during the operation of the furrowing device, the degree of blockage changes randomly. The anti-entanglement and weeding component rotates at a fixed speed and direction, and cannot adapt to the changes in the degree of blockage, resulting in reduced anti-blockage ability and poor adaptability. In order to solve the above problems, the present invention proposes a double-roller spiral blade meshing anti-blocking device. Summary of the invention

[0005] In order to solve the problem that crop stubble is easily entangled and blocked at the furrowing device of the current seed drill, the anti-entanglement device in the prior art cannot solve the problem of large amounts of fibrous materials such as straw, and the furrowing device equipped with the anti-entanglement device will still be entangled and blocked, requiring shutdown for cleaning, affecting the progress of the operation, and a double-roller spiral blade meshing anti-blocking device is provided.

[0006] The present invention is implemented by the following technical solutions: A double-roller spiral blade meshing anti-blocking device comprises an intelligent variable speed motor installed at the front end of the shovel handle of a furrow opener through a motor seat, the output end of the intelligent variable speed motor is connected to the spiral blade double rollers that rotate synchronously in the opposite direction through a connecting sleeve transmission, and the two ends of the spiral blade double rollers are installed on the shovel handle through sealed bearings; the spiral blade double rollers comprise an active spiral blade roller and a driven spiral blade roller installed side by side, the active spiral blade roller comprises an active roller shaft, and a right-handed spiral blade is fixed on the outer periphery of the active roller shaft; the driven spiral blade roller comprises a driven roller shaft, and a left-handed spiral blade is fixed on the outer periphery of the driven roller shaft; the upper ends of the active roller shaft and the driven roller shaft are keyed with mutually meshing gears; the left-handed spiral blade and the right-handed spiral blade mesh with each other to form shear, and the meshing point moves up and down with the rotation of the spiral blade.

[0007] During implementation, a double-roller spiral blade meshing anti-blocking device designed by the present invention includes an intelligent variable speed motor installed at the front end of the shovel handle of the furrow opener through a motor seat, the upper part of the shovel handle is installed on the seed drill frame through bolts, and a shovel tip is installed at the bottom front end of the shovel handle, and the shovel tip is connected by bolts, and a fertilizer and seed guide tube is installed at the rear end of the shovel handle, and the shovel tip can smoothly enter the soil to open a furrow, ensuring that the fertilizer and seed guide tube is fertilized and sown at the bottom of the furrow; specifically, a connecting plate is fixed at the front end of the upper section of the shovel handle, and the upper front end of the connecting plate is bolted to the motor seat, and the front end of the motor seat is installed with an intelligent variable speed motor through screws; the power of the intelligent variable speed motor is provided by the tractor, and the intelligent variable speed motor includes a DC motor at the front and a torque sensor and a motor speed control system at the rear, which can intelligently control the rotation speed according to the resistance, that is, the speed of the DC motor output shaft changes with the torque, and further, when the rotation resistance of the active spiral blade roller and the driven spiral blade roller increases, the speed of the intelligent variable speed motor increases, and when the rotation resistance of the active spiral blade roller and the driven spiral blade roller decreases, the speed of the intelligent variable speed motor decreases.

[0008] The output end of the intelligent variable speed motor is connected to the spiral sheet double rollers that rotate synchronously and oppositely through a connecting sleeve transmission. The output shaft of the intelligent variable speed motor is installed on the upper section of the connecting sleeve and is locked by bolts. The upper end of the active roller shaft is installed on the lower section of the connecting sleeve and fixed by bolts. The two ends of the spiral sheet double roller are installed on the shovel handle through sealed bearings. Specifically, the upper base plate is bolted in front of the lower end of the connecting plate, and the two ends of the roller shaft of the spiral sheet double roller are respectively installed on the upper base plate and the lower base plate through sealed bearings. The sealed bearings are installed in the bearing holes of the upper base plate and the lower base plate, and the lower base plate is welded to the front end of the middle section of the shovel handle, wherein sealing ring covers are respectively provided above the sealing bearings on the lower base plate, and the sealing ring covers are fixed to the lower ends of the left-handed spiral sheet and the right-handed spiral sheet.

[0009] The shovel handle is located at the front end of the lower part of the spiral blade double roller, and an arc-shaped guard with an arc surface facing backward is fixed, that is, the arc-shaped guard is welded to the shovel handle, located at the front end of the spiral blade double roller, and a gap is left between the spiral blade double roller to prevent farmland debris in the front from entering the gap between the spiral blade double roller and the lower bottom plate.

[0010] The spiral blade double roller comprises an active spiral blade roller and a driven spiral blade roller which are installed side by side. The active spiral blade roller comprises an active roller shaft, and a right-handed spiral blade is fixed on the outer circumference of the active roller shaft; the driven spiral blade roller comprises a driven roller shaft, and a left-handed spiral blade is fixed on the outer circumference of the driven roller shaft; the left-handed spiral blade and the right-handed spiral blade are made of thin steel plates; the inner hole and outer circumference diameters of the left-handed spiral blade and the right-handed spiral blade are the same, and the pitch is equal. The left-handed spiral blade and the right-handed spiral blade are provided with 2 to 3 spirals, and the spiral angle is less than or equal to 90°. The spiral length of the left-handed spiral blade and the right-handed spiral blade is 200 to 300 mm, and the pitch is 200 to 600 mm.

[0011] The upper ends of the active roller shaft and the driven roller shaft are key-connected with gears meshing with each other; specifically, the gears include an active gear installed on the active roller shaft and a driven gear installed on the driven roller shaft, the inner holes of the gears are connected to the active roller shaft and the driven roller shaft through their respective transmission keys, the driven gear has the same number of teeth as the active gear, and is driven by the active gear; a gear cover covering the outside of the gear is installed above the upper base plate by screws, and an axial hole passing through the active roller shaft and the driven roller shaft is opened on the gear cover.

[0012] The left-handed spiral blade and the right-handed spiral blade mesh with each other to form shearing, and the meshing point moves up and down as the spiral blade rotates, forming sliding scissors, that is, between the active spiral blade roller and the driven spiral blade roller, the blades of the right-handed spiral blade are inserted into the blade gap of the left-handed spiral blade, and similarly, the blades of the left-handed spiral blade are inserted into the blade gap of the right-handed spiral blade.

[0013] Furthermore, when the power output shaft of the intelligent variable speed motor drives the active spiral blade roller to rotate clockwise, the driven spiral blade roller rotates counterclockwise.

[0014] When in use, the upper end of the shovel handle is installed on the seeder frame. When the seeder is operating, the shovel tip of the furrow opener enters the soil on the surface of the farmland to open furrows, fertilize and sow. The tractor's own power system supplies power to the intelligent variable speed motor for rotation. The intelligent variable speed motor drives the spiral blade double rollers at the front end of the furrow opener to intelligently control the rotation speed according to the size of the furrow opener's blockage resistance. When the furrow opener is blocked, the rotation resistance of the spiral blade double rollers increases, the torque on the output shaft of the intelligent variable speed motor increases, and the speed of the spiral blade double rollers automatically increases, which automatically improves the anti-blocking ability. Among them, the active spiral blade roller is driven by the intelligent variable speed motor, the active gear on the active roller shaft drives the driven gear, and the driven spiral blade roller is driven by the driven gear. The active spiral blade roller and the driven spiral blade roller rotate in opposite directions. The two spiral blades on the active spiral blade roller rotate to generate friction to the sides and upwards on the farmland debris, and the farmland debris is diverted to the two sides of the furrow opener to prevent the furrow opener from being blocked. At the same time, the left-handed spiral blades and the right-handed spiral blades are inserted into the grooves at the contact point and mesh and rotate, generating a forward wind blowing force in the middle of the active spiral blade roller to blow away the farmland debris in front of the furrow opener, thereby enhancing the ability of the farmland debris to be diverted to both sides of the furrow opener; During the rotation process, the meshing position of the spiral blade moves from bottom to top, which not only transfers the farmland debris to the ridge, but also slides to cut off the farmland debris wrapped around the active spiral blade roller. The filled farmland debris is subjected to the shear force to prevent the left-handed spiral blade and the right-handed spiral blade from being entangled and blocked by farmland debris. When the farmland debris is large and long, the rotation resistance of the active spiral blade roller and the driven spiral blade roller increases, the torque of the intelligent variable speed motor shaft increases, the torque sensor collects and transmits the torque change signal, and the motor speed control system promptly controls the DC motor to increase the speed to eliminate the blockage fault of the furrow opener. After the blockage fault is eliminated, the torque of the intelligent variable speed motor shaft decreases, and the speed decreases accordingly. During the rotation process, the speed is 200~400r / min, and the speed change range is 0~100r / min.

[0015] Under the combined effect of the centrifugal wind force generated by the rotation of the spiral blade double rollers, the intermittent friction force generated by the contact with farmland debris and the shear force generated by the spiral blade double rollers, the crop residues are actively opened up and diverted, creating a channel for the furrowing loader without entanglement and blockage of crop residues, effectively preventing the occurrence of furrowing device blockage.

[0016] Compared with the prior art, the present invention has the following beneficial effects: based on the types and mechanisms of clogging caused by crop stubble entanglement in the furrowing device, the present invention installs a double roller of spiral blades driven by an electric motor in front of the furrow opener. The motor intelligently controls the rotation speed according to the size of the clogging resistance of the furrow opener, and effectively adjusts the rotation speed of the double roller of spiral blades according to the degree of clogging of the furrow opener. The clogging problem of the furrowing device is solved automatically and intelligently, thereby improving the sowing passability and operation quality.

[0017] Compared with the existing anti-entanglement furrowing devices, the present invention has a fast operating speed and can be effectively applied to the sowing operation area of ​​the land after all the straw has been returned to the field. It has a wide range of use, strong adaptability, good anti-entanglement effect, no need to stop for cleaning, and high production efficiency. It solves many practical problems of the existing anti-entanglement devices, such as unstable performance, unreliable operation, low adaptability, and low production efficiency. In addition, the device is easy to install, low cost, can be combined with the existing seeder, has good economic benefits, and is suitable for wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the present invention.

[0019] Figure 2 It is a schematic side view of the assembly of the present invention.

[0020] Figure 3 It is a schematic top view of the assembly of the present invention.

[0021] Figure 4 It is a schematic side view of the assembly of the spiral blade double rollers in the present invention.

[0022] Figure 5 for Figure 4 Cross-sectional view at AA in the middle.

[0023] Figure 6 It is a schematic diagram of the active spiral blade roller in the present invention.

[0024] Figure 7 Schematic diagram of the driven spiral blade roller in the present invention.

[0025] In the figure: 1-shovel tip, 2-shovel handle, 3-arc-shaped shield, 4-spiral sheet double roller, 401-lower base plate, 402-sealed bearing, 403-sealing ring cover, 404-active spiral sheet roller, 4041-active roller shaft, 4042-right-handed spiral sheet, 405-upper base plate, 406-gear, 407-gear cover, 408-driven spiral sheet roller, 4081-driven roller shaft, 4082-left-handed spiral sheet, 5-connecting sleeve, 6-intelligent variable speed motor, 7-motor seat, 8-connecting plate, 9-seeder frame, 10-fertilizer and seed guide tube. DETAILED DESCRIPTION

[0026] The specific embodiments of the present invention are described below in conjunction with the accompanying drawings. Example 1

[0027] A double-roller spiral blade meshing anti-blocking device, such as Figures 1 to 7 As shown, Figure 2 , 3The intelligent variable speed motor is not shown, including an intelligent variable speed motor 6 installed at the front end of the shovel handle 2 of the furrow opener through a motor seat 7, the upper part of the shovel handle 2 is installed on the seeder frame 9 by bolts, and a shovel tip 1 is installed at the bottom front end of the shovel handle 2, and the shovel tip 1 is connected by bolts, and a fertilizer and seed guide tube 10 is installed at the rear end of the shovel handle 2. The shovel tip 1 can smoothly enter the soil to open furrows, ensuring that the fertilizer and seed guide tube is fertilizing and sowing at the bottom of the furrow; specifically, a connecting plate 8 is fixed to the front end of the upper section of the shovel handle 2, and the upper front end of the connecting plate 8 is bolted to the motor seat 7, and the front end of the motor seat 7 is installed with an intelligent Variable speed motor 6; the power of the intelligent variable speed motor 6 is provided by the tractor. The intelligent variable speed motor 6 includes a DC motor at the front, a torque sensor at the rear, and a motor speed control system. The rotation speed can be intelligently controlled according to the size of the resistance encountered, that is, the rotation speed of the DC motor output shaft changes with the torque. Furthermore, when the rotation resistance of the active spiral roller 404 and the driven spiral roller 408 increases, the rotation speed of the intelligent variable speed motor 6 increases, and when the rotation resistance of the active spiral roller 404 and the driven spiral roller 408 decreases, the rotation speed of the intelligent variable speed motor 6 decreases.

[0028] The output end of the intelligent variable speed motor 6 is connected to the spiral sheet double roller 4 that rotates synchronously and reversely through the connecting sleeve 5. The output shaft of the intelligent variable speed motor 6 is installed on the upper section of the connecting sleeve 5 and is locked by bolts. The upper end of the active roller shaft 4041 is installed on the lower section of the connecting sleeve 5 and is fixed by bolts; both ends of the spiral sheet double roller 4 are installed on the shovel handle 2 through sealed bearings 402; specifically, the upper base plate 405 is bolted to the front of the lower end of the connecting plate 8, and both ends of the roller shaft of the spiral sheet double roller 4 are respectively installed on the upper base plate 405 and the lower base plate 401 through sealed bearings 402. The sealed bearings 402 are installed in the bearing holes of the upper base plate 405 and the lower base plate 401, and the lower base plate 401 is welded to the front end of the middle section of the shovel handle 2, wherein sealing ring covers 403 are respectively provided above the sealing bearings 402 located on the lower base plate 401, and the sealing ring covers 403 are fixed to the lower ends of the left-handed spiral sheet 4082 and the right-handed spiral sheet 4042.

[0029] The shovel handle 2 is located at the front end of the lower part of the spiral blade double roller 4, and an arc-shaped protective cover 3 with an arc surface facing backward is fixed, that is, the arc-shaped protective cover 3 is welded to the shovel handle 2, located at the front end of the spiral blade double roller 4, and there is a gap between the spiral blade double roller 4 to prevent farmland debris in the front from entering the gap between the spiral blade double roller 4 and the lower bottom plate 401.

[0030] like Figures 4 to 7As shown, the spiral sheet double roller 4 includes an active spiral sheet roller 404 and a driven spiral sheet roller 408 installed side by side, the active spiral sheet roller 404 includes an active roller shaft 4041, and a right-handed spiral sheet 4042 is fixed on the outer periphery of the active roller shaft 4041; the driven spiral sheet roller 408 includes a driven roller shaft 4081, and a left-handed spiral sheet 4082 is fixed on the outer periphery of the driven roller shaft 4081; the left-handed spiral sheet 4082 and the right-handed spiral sheet 4042 are made of thin steel plates; the inner hole and outer circumference diameter of the left-handed spiral sheet 4082 and the right-handed spiral sheet 4042 are the same, and the pitch is equal, the left-handed spiral sheet 4082 and the right-handed spiral sheet 4042 are provided with 2~3 spirals, the spiral angle is less than or equal to 90°, the spiral length of the left-handed spiral sheet 4082 and the right-handed spiral sheet 4042 is 200~300mm, and the pitch is 200~600mm.

[0031] The upper ends of the active roller shaft 4041 and the driven roller shaft 4081 are key-connected with mutually meshing gears 406; specifically, the gear 406 includes a driving gear installed on the active roller shaft 4041 and a driven gear installed on the driven roller shaft 4081, the inner hole of the gear 406 is connected to the active roller shaft 4041 and the driven roller shaft 4081 through their respective transmission keys, the driven gear has the same number of teeth as the active gear, and is driven by the active gear; a gear cover 407 covering the outside of the gear 406 is installed above the upper base plate 405 by screws, and an axial hole passing through the active roller shaft 4041 and the driven roller shaft 4081 is opened on the gear cover 407.

[0032] The left-handed spiral piece 4082 and the right-handed spiral piece 4042 mesh with each other to form shearing, and the meshing point moves up and down as the spiral piece rotates to form sliding scissors, that is, between the active spiral piece roller 404 and the driven spiral piece roller 408, the blades of the right-handed spiral piece 4042 are inserted into the blade gaps of the left-handed spiral piece 4082, and similarly, the blades of the left-handed spiral piece 4082 are inserted into the blade gaps of the right-handed spiral piece 4042.

[0033] Furthermore, when the power output shaft of the intelligent variable speed motor 6 drives the active spiral blade roller 404 to rotate clockwise, the driven spiral blade roller 408 rotates counterclockwise.

[0034] When in use, the upper end of the shovel handle 2 is installed on the seeder frame 9. When the seeder is operating, the shovel tip 1 of the furrow opener enters the soil on the surface of the farmland to dig furrows, fertilize and sow. The tractor's own supporting power system supplies power to the intelligent variable speed motor 6 for rotation. The intelligent variable speed motor 6 drives the spiral blade double roller 4 to intelligently control the rotation speed and rotation direction at the front end of the furrow opener according to the size of the furrow opener's blocking resistance. When the furrow opener is blocked, the rotation resistance of the spiral blade double roller 4 increases, the torque on the output shaft of the intelligent variable speed motor 6 increases, and the rotation speed of the spiral blade double roller 4 automatically increases, and the anti-blocking ability is automatically improved. Among them, the active spiral blade roller 404 is driven by the intelligent variable speed motor, the active gear on the active roller shaft 4041 drives the driven gear, and the driven spiral blade roller 408 is driven by the driven gear. The active spiral blade roller 404 and the driven spiral blade roller 408 have opposite rotation directions. The two spiral blades on the active spiral blade roller 404 rotate to generate friction to the sides and upwards on the farmland debris, and the farmland debris is diverted to the two sides of the furrow opener to prevent the furrow opener from being blocked. At the same time, the left-handed spiral blade 4082 and the right-handed spiral blade 4042 are inserted into the groove at the contact point and mesh and rotate, generating a forward wind blowing force in the middle of the active spiral blade roller 404 to blow away the farmland debris in front of the furrow opener, thereby enhancing the ability of diverting farmland debris to both sides of the furrow opener; During the rotation process, the meshing position of the spiral blade moves from bottom to top, which not only transfers the farmland debris to the ridge, but also slides to cut off the farmland debris wrapped around the active spiral blade roller 404. The filled farmland debris is subjected to the shear force to prevent the left-handed spiral blade 4082 and the right-handed spiral blade 4042 from being entangled and blocked by farmland debris. When the farmland debris is large and long, the rotation resistance of the active spiral blade roller 404 and the driven spiral blade roller 408 increases, the torque of the 6-axis of the intelligent variable speed motor increases, the torque sensor collects and transmits the torque change signal, and the motor speed control system promptly controls the DC motor to increase the speed to eliminate the blockage fault of the furrow opener. After the blockage fault is eliminated, the torque of the 6-axis of the intelligent variable speed motor decreases, and the speed decreases accordingly. During the rotation process, the speed is 200~400r / min, and the speed change range is 0~100r / min.

[0035] Under the combined effect of the centrifugal wind force generated by the rotation of the spiral blade double rollers 4, the intermittent friction force generated by the contact with farmland debris and the shear force generated by the spiral blade double rollers, the crop residues are actively opened up and diverted, opening up a channel for the furrowing device without entanglement and blockage of crop residues, thereby effectively preventing the occurrence of clogging of the furrowing device. Example 2

[0036] A double-roller spiral blade meshing anti-blocking device comprises a spiral blade double roller, wherein the driving spiral blade roller and the driven spiral blade roller of the spiral blade double roller are not provided with gears, and the spiral blade double roller rotates only through the contact between the left-handed spiral blade and the right-handed spiral blade, and the rest is exactly the same as that of the first embodiment.

[0037] The scope of protection claimed by the present invention is not limited to the above specific embodiments. For those skilled in the art, the present invention may have various deformations and changes. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-roller spiral blade meshing anti-blocking device, characterized in that: The invention comprises an intelligent variable speed motor (6) mounted on the front end of a shovel handle (2) of a furrow opener via a motor seat (7), wherein the output end of the intelligent variable speed motor (6) is connected to a spiral blade double roller (4) rotating synchronously in the opposite direction via a connecting sleeve (5), and the two ends of the spiral blade double roller (4) are mounted on the shovel handle (2) via sealed bearings (402); The spiral blade double roller (4) comprises a driving spiral blade roller (404) and a driven spiral blade roller (408) installed side by side, the driving spiral blade roller (404) comprising a driving roller shaft (4041), and a right-handed spiral blade (4042) is fixed to the outer circumference of the driving roller shaft (4041); the driven spiral blade roller (408) comprises a driven roller shaft (4081), and a left-handed spiral blade (4082) is fixed to the outer circumference of the driven roller shaft (4081); The upper ends of the active roller shaft (4041) and the driven roller shaft (4081) are key-connected with gears (406) that mesh with each other; The left-handed spiral sheet (4082) and the right-handed spiral sheet (4042) mesh with each other to form shearing, and the meshing point moves up and down as the spiral sheet rotates.

2. A double-roller spiral blade meshing anti-blocking device according to claim 1, characterized in that: A connecting plate (8) is fixed to the front end of the upper section of the shovel handle (2); the front end of the upper end of the connecting plate (8) is bolted to the motor seat (7); the front end of the motor seat (7) is installed with an intelligent variable speed motor (6); the output shaft of the intelligent variable speed motor (6) is installed on the upper section of the connecting sleeve (5) and is locked by bolts; the upper end of the active roller shaft (4041) is installed on the lower section of the connecting sleeve (5) and is fixed by bolts; The front of the lower end of the connecting plate (8) is bolted to an upper base plate (405), and both ends of the roller shaft of the spiral blade double roller (4) are respectively mounted on the upper base plate (405) and the lower base plate (401) through sealed bearings (402), and the lower base plate (401) is welded to the front end of the middle section of the shovel handle (2).

3. A double-roller spiral blade meshing anti-blocking device according to claim 1, characterized in that: Sealing ring covers (403) are respectively provided above the sealing bearings (402) on the lower base plate (401), and the sealing ring covers (403) are fixed to the lower ends of the left-handed spiral sheet (4082) and the right-handed spiral sheet (4042).

4. A double-roller spiral blade meshing anti-blocking device according to claim 1, characterized in that: The shovel handle (2) is located at the lower front end of the spiral blade double roller (4) and is fixed with an arc-shaped protective cover (3) with an arc surface facing backwards.

5. A double-roller spiral blade meshing anti-blocking device according to claim 1, characterized in that: A gear cover (407) covering the outside of the gear (406) is installed above the upper base plate (405) by means of screws, and the gear cover (407) is provided with shaft holes through which the active roller shaft (4041) and the driven roller shaft (4081) pass.

6. A double-roller spiral blade meshing anti-blocking device according to claim 1, characterized in that: The gear (406) comprises a driving gear mounted on the driving roller shaft (4041) and a driven gear mounted on the driven roller shaft (4081); the inner hole of the gear (406) is connected to the driving roller shaft (4041) and the driven roller shaft (4081) via respective transmission keys; the driven gear has the same number of teeth as the driving gear and is driven by the driving gear.

7. A double-roller spiral blade meshing anti-blocking device according to claim 1, characterized in that: The left-handed spiral sheet (4082) and the right-handed spiral sheet (4042) have the same inner hole and outer circumference diameter, and the same pitch; the left-handed spiral sheet (4082) and the right-handed spiral sheet (4042) are provided with 2 to 3 spirals, and the spiral angle is less than or equal to 90°.

8. A double-roller spiral blade meshing anti-blocking device according to claim 7, characterized in that: The left-handed spiral blade (4082) and the right-handed spiral blade (4042) have a spiral length of 200-300 mm and a spiral pitch of 200-600 mm. The left-handed spiral blade (4082) and the right-handed spiral blade (4042) are made of thin steel plates.

9. A double-roller spiral blade meshing anti-blocking device according to claim 1, characterized in that: The upper part of the shovel handle (2) is mounted on the seeder frame (9) by means of bolts, a shovel tip (1) is mounted on the bottom front end of the shovel handle (2), and a fertilizer and seed guide tube (10) is mounted on the rear end of the shovel handle (2).

10. A double-roller spiral blade meshing anti-blocking device according to claim 1, characterized in that: The intelligent variable speed motor (6) comprises a DC motor at the front, a torque sensor at the rear, and a motor speed control system.

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