Automatic film changing device of peanut seeder

Abstract

The utility model relates to an automatic film changing device of a peanut seeding machine, and belongs to the technical field of peanut seeding machinery. According to the technical scheme, a movable film changer plate (46) and a fixed film changer plate (38) integrally form a clamping plate structure; a crankshaft structure (43) is arranged on the crankshaft support (76), a nylon wheel (83) is arranged at one end of the crankshaft structure (43), and the nylon wheel (83) is pressed on the lower mulching film roller (6); the other end of the crankshaft structure (43) is connected with one end of a driving lever (84), and the other end of the driving lever (84) is connected with one end of an adjustable connecting plate (44) through an adjusting screw sleeve (41). The mulching film laying machine has the advantages that the upper mulching film roller, the lower mulching film roller and the film changing device are adopted, automatic film changing can be achieved without shutdown, the operation time of one-time mulching film laying is prolonged, the shutdown frequency is reduced, the mulching film laying machine is practical and convenient, labor is saved, and operation efficiency is improved. And after the upper mulching film roller and the lower mulching film roller are completely laid, the machine is stopped, and a new upper mulching film roller and a new lower mulching film roller are replaced.

Description

Technical Field

[0001] This utility model relates to an automatic film changing device for a peanut planter, belonging to the field of peanut planting machinery technology. Background Technology

[0002] my country ranks second in the world in total peanut planting area and first in total peanut production, and its mechanized peanut planting technology has made significant progress. Currently, existing peanut planters can complete ridging, furrowing, fertilization, sowing, covering, compaction, drip irrigation tape laying, spraying (herbicides), mulching, covering with soil on the mulch, and automatic cutting in one operation. Examples include Chinese patents CN2021110538097, CN2021110776894, and 2024106005407. However, existing peanut planters generally use a single mulch roller, requiring manual replacement of the mulch film during operation. This is labor-intensive and time-consuming, and the frequent stops for film replacement during planting reduce operational efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic film changing device for a peanut planter. It adopts an upper film roller, a lower film roller, and a roller changer to automatically change the film without stopping the machine, which extends the operation time of laying film once, reduces the number of downtimes, is practical and convenient, saves labor, improves operation efficiency, and solves the above-mentioned problems in the background technology.

[0004] The technical solution of this utility model is:

[0005] An automatic film changing device for a peanut planter includes a frame, on which a film roller frame is mounted. An upper film frame and a lower film frame are arranged vertically on the film roller frame. An upper film roller and a lower film roller are respectively mounted on the upper and lower film rollers. A film changing device is provided between the upper and lower film rollers. The film changing device includes a film changing device bracket, a fixed plate mounting arm, a film changing device fixed plate, a film changing device moving plate, a tension spring, and a crankshaft structure. One end of the film changing device bracket is connected to the ground. The film roller frame is connected at one end, and the other end is connected to the fixed plate mounting arm. The end of the fixed plate mounting arm is welded to the fixed plate of the film changer. The lower end face of the fixed plate of the film changer is tangent to the outer circle (mulch film) of the lower ground film roller but does not intersect. The moving plate of the film changer is parallel to and close to the lower end face of the fixed plate of the film changer, and the lower end face of the moving plate of the film changer is tangent to the outer edge of the lower ground film roller but does not intersect. The lower end faces of the moving plate of the film changer and the fixed plate of the film changer are connected by hinge structures on both sides. The entire sheet of plastic film is laid flat through the gap between the lower end faces of the moving plate and the fixed plate of the film changer, which are located between two hinge structures. A tension spring is provided between the moving plate and the fixed plate, and the moving plate and the fixed plate together form a clamping structure. A crankshaft bracket is provided on the mounting arm of the fixed plate, and a crankshaft structure is provided on the crankshaft bracket. One end of the crankshaft structure is provided with a nylon wheel, which presses against the lower plastic film roller. The other end of the crankshaft structure is connected to one end of a lever. The other end of the lever is connected to one end of an adjustable connecting plate through an adjusting screw sleeve. The adjusting screw sleeve structure is as follows: the other end of the lever is provided with a screw sleeve with external threads. The adjustable connecting plate has a long slot. The screw sleeve slides in the long slot. The external threads of the screw sleeve at the end of the lever match the nut to connect the other end of the lever to one end of the adjustable connecting plate. The end of the long slot is fixed to the bottom of the outer side of the moving plate of the film changer by a connecting bolt.

[0006] During use, the fixed plate and moving plate of the film changer clamp the entire width of the upper film roller. The head of the upper film roller rests on the lower film roller between the lower end face of the fixed plate and the lower film roller for later use. Because the clamping structure clamps the entire width of the upper film roller, the upper film roller is not laid out along with the lower film roller. As the outer diameter (thickness) of the lower film roller gradually decreases during the film laying process, the nylon wheel in contact with the lower film roller also gradually moves downward. The crankshaft structure drives the lever to adjust the... The film changes automatically. The film slides upward in the long slot of the connecting plate, gradually applying an outward force to the bottom of the moving plate of the film changer which is fixedly connected to the adjustable connecting plate. When the outward force is greater than the tension of the spring between the moving plate and the fixed plate of the film changer, the moving plate moves outward, the clamping structure opens, and the film on the upper film roller is no longer clamped by the clamping structure. The film on the lower film roller, which is placed on top of the film on the lower film roller, begins to lay the film under the action of friction between the lower and upper film rollers, thus realizing automatic film changing.

[0007] Furthermore, the crankshaft structure includes a nut shaft head, a torsion spring, a nylon wheel support arm, and a crankshaft support arm. The nut shaft head passes through the crankshaft bracket, and one end of the nut shaft head near the clamping plate structure is connected to one end of the crankshaft support arm. The other end of the crankshaft support arm is connected to one end of the lever. The other end of the nut shaft head is connected to the nylon wheel through the nylon wheel support arm. A torsion spring is provided between the nut shaft head and the nylon wheel support arm, and the nylon wheel is pressed against the lower ground film roller by the elastic force of the torsion spring.

[0008] Before use, bring the nylon wheel into contact with the outer circle of the lower mulch film roller. Since the lower mulch film roller is made by winding the mulch film onto the roller shaft, the radius of the lower mulch film roller needs to be divided by the radius of the roller shaft to determine the position where the mulch film of the lower mulch film roller is about to run out. Based on this position, adjust the position of the screw sleeve locking lever in the long slot of the adjustable connecting plate to gradually reduce the radius of the lower mulch film roller to this position, so as to achieve automatic film replacement.

[0009] Furthermore, the nylon wheel support arm is an L-shaped bent structure, consisting of mutually perpendicular vertical arms and horizontal arms. The top of the vertical arm is fixedly connected to the nut shaft head, and a nylon wheel is provided at the end of the horizontal arm. The vertical arm is arranged parallel to the crankshaft support arm and the adjustable connecting plate space, and the horizontal arm is arranged parallel to the nut shaft head and the lever space.

[0010] Furthermore, the vertical arm and the crankshaft support arm are arranged parallel to each other in space and at a difference of 120°.

[0011] Furthermore, one end of the torsion spring presses against the crankshaft bracket, and the other end is fastened to the vertical arm of the nylon wheel support, making the nylon wheel and the lower ground film roller more closely contacted.

[0012] Furthermore, rubber sleeves are provided on the lower end faces of the film changer stationary plate and the film changer moving plate to increase the friction between the film changer stationary plate, the film changer moving plate and the film head of the upper film roller.

[0013] The beneficial effects of this utility model are as follows: The use of an upper and lower mulch film roller and a roller changer allows for automated film replacement without stopping the machine, extending the operation time for one mulch film laying cycle, reducing downtime, and providing convenience, labor savings, and improved work efficiency. After all the upper and lower mulch film rollers have been laid, the machine is stopped to replace them with new ones. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the membrane changer according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the crankshaft structure according to an embodiment of the present utility model;

[0017] Figure 4 This is an embodiment of the present utility model. Figure 3 A magnified view of a portion of the image;

[0018] In the diagram: 1. Frame; 2. Film roller frame; 3. Upper film frame; 4. Lower film frame; 5. Upper film roller; 6. Lower film roller; 7. Film changer; 8. Film changer bracket; 9. Connecting nut; 10. Pin; 11. Film changer fixed plate; 12. Tension spring; 13. Crankshaft support arm; 14. Adjusting screw sleeve; 15. Nylon wheel support arm; 16. Crankshaft structure; 17. Adjustable connecting plate; 18. Torsion spring; 19. Film changer moving plate; 20. Fixed plate mounting support arm; 10. Crankshaft bracket; 11. Fixed plate tension spring mounting pin; 12. U-groove; 13. U-shaped plate; 14. Connecting bolt; 15. Shaft hole; 16. Bolt; 17. Nylon wheel; 18. Lever; 19. Film changer bracket mounting hole; 20. Nut shaft head; 21. Moving plate tension spring mounting pin; 22. Long strip groove; 33. Long strip groove. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] See attached document Figure 1-4This embodiment provides an automatic film changing device for a peanut planter, comprising a frame 1, a film roller frame 2 mounted on the frame 1, an upper film frame 3 and a lower film frame 4 arranged vertically on the film roller frame 2, an upper film roller 5 and a lower film roller 6 respectively mounted on the upper film frame 3 and the lower film frame 4, and a film changing device 7 provided between the upper film roller 5 and the lower film roller 6. The film changing device 7 includes a film changing device bracket 35, a fixed plate mounting arm 75, a film changing device fixed plate 38, a film changing device moving plate 46, a tension spring 39 and a crankshaft structure 43. The film changing device bracket 35... 5. One end is connected to the film roller frame 2, and the other end is connected to the fixed plate mounting arm 75. The end of the fixed plate mounting arm 75 is welded to the film changer fixed plate 38. The lower end face of the film changer fixed plate 38 is tangent to the outer circle (film) of the lower film roller 6 but does not intersect. The film changer moving plate 46 is parallel to and close to the lower end face of the film changer fixed plate 38. The lower end face of the film changer moving plate 46 is tangent to the outer edge of the lower film roller 6 but does not intersect. The lower end face of the film changer moving plate 46 and the film changer fixed plate 38 are connected by hinge structures on both sides. The entire upper film roller 5... The plastic film is laid flat through the gap between the lower end face of the moving plate 46 and the fixed plate 38 of the film changer, which are located between two hinge structures. A tension spring 39 is provided between the moving plate 46 and the fixed plate 38, and the moving plate 46 and the fixed plate 38 together form a clamping structure. A crankshaft bracket 76 is provided on the fixed plate mounting arm 75, and a crankshaft structure 43 is provided on the crankshaft bracket 76. One end of the crankshaft structure 43 is provided with a nylon wheel 83, which presses against the lower plastic film roller 6. The other end of the crankshaft structure 43 is connected to one end of a lever 84. The other end of the lever 84 is connected to one end of the adjustable connecting plate 44 via an adjusting screw sleeve 41. The adjusting screw sleeve 41 has the following structure: the other end of the lever 84 is provided with a screw sleeve with external threads, and the adjustable connecting plate 44 is provided with an elongated slot 95. The screw sleeve slides in the elongated slot 95. The external threads of the screw sleeve at the end of the lever 84 match the nut to connect the other end of the lever 84 to one end of the adjustable connecting plate 44. The end of the elongated slot 95 is fixed to the bottom of the outer side of the membrane changer moving plate 46 by a connecting bolt 80.

[0021] During use, the film changer stationary plate 38 and the film changer moving plate 46 clamp the entire width of the upper film roller 5. The head of the film on the upper film roller 5 rests on the lower film roller between the lower end face of the film changer stationary plate 38 and the lower film roller 6 for later use. Because the clamping structure clamps the entire width of the film on the upper film roller 5, the film on the upper film roller 5 is not laid together with the film on the lower film roller 6. As the outer diameter (thickness) of the lower film roller 5 gradually decreases during the laying of the film, the nylon wheel 83 in contact with the lower film roller 5 also gradually moves downward. The crankshaft structure 43 drives the lever 84 to adjust the position. The connecting plate 44 slides upward in the elongated slot 95, gradually applying an outward force to the bottom of the film changer moving plate 46, which is fixedly connected to the adjustable connecting plate 44. When the outward force is greater than the tension of the tension spring 39 between the film changer moving plate 46 and the film changer fixed plate 38, the film changer moving plate 46 moves outward, the clamping structure opens, and the film of the entire upper film roller 5 is no longer clamped by the clamping structure. The film of the upper film roller 5, which is placed on the film of the lower film roller 6, begins to lay the film under the action of friction between the lower and upper film, as the lower film roller 6 rotates, thus realizing automatic film changing.

[0022] The crankshaft structure 43 includes a nut shaft head 86, a torsion spring 45, a nylon wheel support arm 42, and a crankshaft support arm 40. The nut shaft head 86 passes through the crankshaft bracket 76. One end of the nut shaft head 86 near the clamping plate structure is connected to one end of the crankshaft support arm 40, and the other end of the crankshaft support arm 40 is connected to one end of the lever 84. The other end of the nut shaft head 86 is connected to the nylon wheel 83 through the nylon wheel support arm 42. A torsion spring 45 is provided between the nut shaft head 86 and the nylon wheel support arm 42. The nylon wheel 83 is pressed against the lower ground film roller 6 by the elastic force of the torsion spring 45.

[0023] Before use, the nylon wheel 83 is brought into contact with the outer circle of the lower mulch film roller 6. Since the lower mulch film roller 6 is made by winding mulch film on the roller shaft, the radius of the lower mulch film roller 6 needs to be divided by the radius of the roller shaft to determine the position where the mulch film of the lower mulch film roller 6 is about to run out. Based on this position, the position of the locking lever 84 in the elongated slot 95 of the adjustable connecting plate 44 is adjusted by adjusting the screw sleeve 41. When the radius of the lower mulch film roller 6 gradually shrinks to this position, the automatic film replacement is achieved.

[0024] The length of the elongated slot 95 on the adjustable connecting plate 44 is equivalent to the switching stroke that controls the movement of the membrane changer moving plate 46.

[0025] The nylon wheel support arm 42 is an L-shaped bent structure, consisting of a vertical arm and a horizontal arm that are perpendicular to each other. The top of the vertical arm is fixedly connected to the nut shaft head 86, and the end of the horizontal arm is provided with a nylon wheel 83. The vertical arm is arranged in parallel with the crankshaft support arm 40 and the adjustable connecting plate 44, and the horizontal arm is arranged in parallel with the nut shaft head 86 and the lever 84.

[0026] The vertical arm and the crankshaft support arm 40 are arranged parallel to each other in space and at a difference of 120°.

[0027] One end of the torsion spring 45 presses against the crankshaft bracket 76, and the other end is fastened to the vertical arm of the nylon wheel support arm 42, so that the nylon wheel 83 is in closer contact with the lower ground film roller.

[0028] Rubber sleeves are provided on the lower end faces of the fixed plate 38 and the moving plate 46 of the film changer to increase the friction between the fixed plate 38 and the moving plate 46 of the film changer and the film head of the upper film roller 5.

[0029] The crankshaft bracket 76 is provided with a shaft hole 81 and a maintenance-free bearing. The nut shaft head 86 rotates freely through the maintenance-free bearing. The nut shaft head 86 is a shaft with a thread. One end of the nut shaft head 86 is fixedly connected to one end of the crankshaft support arm 40 by a nut. The other end of the crankshaft support arm 40 is welded to one end of the lever 84.

[0030] The fixed plate 38 and the moving plate 46 of the film changer are respectively provided with a fixed plate spring mounting pin 77 and a moving plate spring mounting pin 87, and the two ends of the tension spring 39 are respectively set on the fixed plate spring mounting pin 77 and the moving plate spring mounting pin 87.

[0031] The hinge structure is as follows: a U-shaped groove 78 is provided at the bottom of the film changer fixed plate 38, and a U-shaped plate 79 with a pin hole is provided at the corresponding position of the film changer moving plate 46 and the U-shaped groove 78 at the bottom of the film changer fixed plate 38. The U-shaped groove 78 of the film changer fixed plate 38 and the U-shaped plate 79 of the film changer moving plate are connected by a pin 37.

[0032] A rubber sleeve is provided on the lower end face of the film changer stationary plate 38 to increase the friction between the film changer stationary plate 38 and the lower ground film roller 6.

[0033] One end of the film changer bracket 35 is connected to the film changer fixed plate 38 through the film changer bracket mounting hole 85 and the connecting nut 36, and the other end of the film changer bracket 35 is connected to the film roller frame 2 through the bolt 82.

[0034] The nylon wheel support arm 42 is a round steel bar. The nylon wheel 83 is equivalent to a sensor, which detects the change in the outer diameter (thickness) of the lower mulch film roller. Before the lower mulch film is used up and the lower mulch film roller is thinned to a set position, the adjustable connecting plate 44 is moved to pull the film changer moving plate 46, opening the clamping plate structure. Under the action of friction, the mulch film on the upper mulch film roller 5 and the lower mulch film drive the upper mulch film to perform the film covering operation, completing the automatic film changing.

Claims

1. An automatic film changing device of a peanut seeder, comprising a frame (1), a mulching film roller frame (2) is arranged on the frame, characterized in that: The film roller frame (2) is provided with an upper film frame (3) and a lower film frame (4) arranged in an up-down manner, the upper film frame (3) and the lower film frame (4) are respectively provided with an upper film roller (5) and a lower film roller (6), and a film changer (7) is arranged between the upper film roller (5) and the lower film roller (6), the film changer (7) comprises a film changer support (35), a fixed plate mounting arm (75), a film changer fixed plate (38), a film changer movable plate (46), a tension spring (39) and a crank structure (43), one end of the film changer support (35) is connected with the film roller frame (2), the other end is connected with the fixed plate mounting arm (75), and the end of the fixed plate mounting arm (75) is welded with the film changer fixed plate (38); the lower end surface of the film changer fixed plate (38) is tangent to the outer circle of the lower film roller (6) but does not intersect with the outer circle; the film changer movable plate (46) is arranged in parallel close to the lower end surface of the film changer fixed plate (38), the lower end surface of the film changer movable plate (46) is tangent to the outer edge of the lower film roller (6) but does not intersect with the outer edge; the film changer movable plate (46) and the lower end surface of the film changer fixed plate (38) are connected through hinge structures on both sides, the whole film of the upper film roller (5) is laid through the gap between the lower end surfaces of the film changer movable plate (46) and the film changer fixed plate (38) between the two hinge structures; the film changer movable plate (46) and the film changer fixed plate (38) are provided with the tension spring (39), and the film changer movable plate (46) and the film changer fixed plate (38) constitute a clamp structure as a whole; the fixed plate mounting arm (75) is provided with a crank support (76), the crank support (76) is provided with the crank structure (43), one end of the crank structure (43) is provided with a nylon wheel (83), the nylon wheel (83) is pressed on the lower film roller (6), the other end of the crank structure (43) is connected with one end of a lever (84), the other end of the lever (84) is connected with one end of an adjustable connecting plate (44) through an adjusting sleeve (41), the adjusting sleeve (41) is structured as follows: the other end of the lever (84) is provided with a sleeve, the sleeve is provided with external threads, the adjustable connecting plate (44) is provided with a long slot (95), the sleeve slides in the long slot (95), the external threads of the sleeve at the end of the lever (84) are matched with a nut to connect the other end of the lever (84) with one end of the adjustable connecting plate (44), and the end of the long slot (95) is fixed to the bottom of the outer side of the film changer movable plate (46) through a connecting bolt (80).

2. The automatic film changing device for a peanut planter according to claim 1, wherein: The crank structure (43) comprises a nut shaft head (86), a torsion spring (45), a nylon wheel arm (42) and a crank arm (40), the nut shaft head (86) penetrates through the crank support (76), one end of the nut shaft head (86) close to the clamp structure is connected with one end of the crank arm (40), the other end of the crank arm (40) is connected with one end of the lever (84); the other end of the nut shaft head (86) is connected with the nylon wheel (83) through the nylon wheel arm (42), the nut shaft head (86) and the nylon wheel arm (42) are provided with the torsion spring (45), and the nylon wheel (83) is pressed on the lower film roller (6) by the elastic force of the torsion spring (45).

3. The automatic film changing device for a peanut planter according to claim 2, wherein: The nylon wheel supporting arm (42) is an L-shaped bending structure, which is composed of a vertical arm and a horizontal arm, the top of the vertical arm is fixedly connected with the screw cap shaft head (86), the end of the horizontal arm is provided with a nylon wheel (83), the vertical arm is arranged in parallel with the crankshaft supporting arm (40) and the adjustable connecting plate (44) in space, and the horizontal arm is arranged in parallel with the screw cap shaft head (86) and the shifting lever (84) in space.

4. The automatic film changing device for a peanut planter according to claim 3, wherein: The vertical arm is arranged in parallel with the crankshaft supporting arm (40) in space and is arranged at an angle of 120°.

5. The automatic film changing device for a peanut planter according to claim 2, wherein: One end of the torsion spring (45) is pressed on the crankshaft support (76), and the other end is buckled on the vertical arm of the nylon wheel supporting arm (42).

6. The automatic film changing device for a peanut planter according to claim 1 or 2, wherein: The lower end surface of the film changer fixed plate (38) and the film changer movable plate (46) is provided with a rubber sleeve.

Images