CN115997562B - Round bale winding rope mechanism of round baler - Google Patents

Abstract

The invention discloses a round bale winding and binding rope mechanism of a round baler, which belongs to agricultural machinery and is mainly used for winding and binding ropes of round bales harvested by a round baler of pasture and crop straws; the device comprises a starting device, a rope bundling transmission unit, a winding rope bundling unit and a rope cutting unit, wherein the starting device mainly comprises a micro motor and a pinion, the rope bundling transmission unit mainly comprises a grooved pulley, a rope pressing arc plate assembly, a worm gear reducer and an incomplete gear disc, the winding rope bundling unit mainly comprises a left swinging disc, a left swinging arm, a left connecting rod, a right swinging disc, a right swinging arm and a right connecting rod, and the rope cutting unit mainly comprises a cutter assembly, a support column and a pull rod; the invention realizes the operation of winding the round bale by the diamond grid and has the characteristics of simple mechanism, high production efficiency, good operation quality and the like.

Description

A rope winding mechanism for round bale of round baler

Technical Field

The invention belongs to the technical field of agricultural machinery, and in particular relates to a rope winding mechanism for a round hay bale of a round baler.

Background Art

Round balers, or balers for short, have become the main machinery for picking up, baling, and harvesting forage grass and crop straw. The rope winding mechanism for round grass bales is an important mechanism of the round baler. It is the key to ensure that the round grass bales made by the round baler do not fall apart, maintain a regular shape, maintain a certain bulk density, and improve the baling efficiency. At present, the rope winding of the round baler is from one side to the other in a spiral direction. Since the rope winding time is long and the rope ends are easy to loosen, the bulk density, baling rate, and regularity of the round grass bales harvested by the round baler are difficult to guarantee, and the baling production efficiency of the round baler is also affected.

Therefore, in view of the problems in the prior art that the time required to wind the rope is long and the ends of the rope are easy to loosen, it is urgent to design a new type of round grass bale winding rope mechanism.

Summary of the invention

The purpose of the present invention is to provide a round bale winding rope mechanism for a round baler in view of the above-mentioned deficiencies in the prior art, so as to ensure the quality of the machine winding rope, the bale bulk density and the baling rate during the baling operation of forage grass and straw, and improve the production efficiency.

In order to solve the above technical problems, the technical solution adopted by the present invention is:

A rope winding mechanism for a round baler comprises a starting device, a rope transmission unit, a rope winding unit and a rope cutting unit, wherein the rope transmission unit is located at the upper part and is connected to the starting device through gear transmission;

The rope transmission unit comprises an incomplete gear plate, a groove wheel and a rope pressing arc plate assembly arranged above the groove wheel, and the groove wheel is fixedly connected to the input shaft of the worm gear reducer, and the output shaft of the worm gear reducer is fixedly connected to the incomplete gear plate;

The rope winding unit comprises a swing plate, a swing arm and a connecting rod respectively arranged on the left and right sides, and the swing arm is fixedly connected to the swing plate, the connecting rod is rotatably connected to the swing plate through a pin shaft, and the corresponding connecting rods on the left and right sides are rotatably connected to the incomplete gear plate through the same pin shaft, and the swing arm is also provided with a rope threading hole for passing the rope along the axial direction;

When the swing arm swings, the rope passing through the rope holes on the left and right sides of the swing arm is brought into the rotating round hay bale and is wound around the rotating round hay bale;

The rope cutting units are respectively arranged on the left and right sides and each comprises a cutter assembly and a pull rod rotatably connected thereto, and the cutter assembly is arranged at the front side wall plate between the rope winding unit and the round grass bale and cuts the rope.

The rope winding unit comprises a left swing plate, a left swing arm, a left connecting rod, and a right swing plate, a right swing arm, and a right connecting rod;

The left swing arm is fixed on the left swing plate, one end of the left connecting rod is rotatably connected to the left swing plate through a pin shaft, and the other end is connected to the right connecting rod and rotatably connected to the incomplete gear plate through the same pin shaft;

The right swing arm is fixed on the right swing plate, one end of the right connecting rod is rotatably connected to the right swing plate through a pin shaft, and the other end is connected to the left connecting rod and rotatably connected to the incomplete gear plate through the same pin shaft;

The left swing plate and the right swing plate can be rotatably fixed on the machine body at the corresponding side.

The cutter assembly includes a cutter fixed on a cutter seat and a pull plate for rotationally connecting with a pull rod, and a side shaft sleeve is fixed between the pull plate and the cutter seat and is rotationally connected with a side pin fixed on a front side wall plate through the side shaft sleeve.

The end of the pull rod passes through a side support plate fixed on the front side wall plate and is reset by a correspondingly arranged reset spring.

The starting device comprises a micro motor and a pinion, wherein the pinion is fixedly connected to the output shaft of the micro motor; the incomplete gear plate is meshed with the matching pinion for transmission, and the pinion is drivingly connected to the micro motor.

The incomplete gear plate is configured as a five-tooth structure, and the module of the pinion is configured to be the same as the module of the incomplete gear plate.

The rope pressing arc plate assembly includes an arc plate and an adjustable clamping device arranged on the upper part of the arc plate. One end of the arc plate is rotatably connected to a pin shaft fixed to the front side of the machine body and its inner end surface is matched with the outer end surface of the groove wheel. The adjustable clamping device points radially to the center of the groove wheel and can adjust the contact pressure between the arc plate and the groove wheel.

The adjustable pressing device comprises an upper fixing plate, an adjusting bolt fixed on the arc plate, and an upper spring sleeved on the adjusting bolt. The upper fixing plate is located outside the upper spring and connected to the adjusting bolt.

The outer end surface of the groove wheel is provided with two grooves arranged along the circumferential direction, and the inner end surface of the arc plate is provided with two convex teeth corresponding to the grooves.

The beneficial effects of the present invention are:

(1) The rope winding mechanism of the round baler comprises a starting device, a rope transmission unit, a rope winding unit and a rope cutting unit installed between the two side wall plates at the upper front part of the round baler. The starting device uses a micro motor to drive a small gear to start the rope winding operation of the round grass bale when the round baler completes the baling of the round grass bale. The rope transmission unit is mainly equipped with a groove wheel, a rope pressing arc plate assembly, a worm gear reducer and an incomplete gear plate. The groove wheel with two annular grooves is matched with the rope pressing arc plate assembly to realize the pre-tightening and guiding of the rope. When the rope winding operation is started, the small gear drives the rope winding unit through the incomplete gear plate with five teeth. After the rope is brought into the round grass bale, the rope is cut by the rope passage. The rope winding unit is driven by the groove wheel, worm gear reducer and incomplete gear plate; the rope winding unit is installed at the lower part of the rope transmission unit, and is mainly equipped with two sets of swing plates, swing arms and connecting rods. Each set of swing plates and swing arms is only responsible for the rope winding operation of half the width of the round bale, so as to realize the rapid grid-shaped rope laying of the round bale; the rope cutting unit is installed at the front of the rope winding unit and close to the round bale and the wall panels on both sides of the round baler. The rope cutting unit is mainly equipped with two sets of cutting knife assemblies and pull rods. The swing arm and pull rod drive the cutter to cut the rope, thereby providing a rope winding mechanism with strong adaptability, fast rope winding speed, high production efficiency and excellent round bale performance, thereby promoting the innovative development of round balers.

(2) The present invention realizes the operation of winding ropes on round hay bales according to a diamond grid, and has the characteristics of simple structure, high production efficiency, and good operation quality.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a top view of the main mechanism for winding the rope when the incomplete gear plate is started and rotated 360° (excluding the groove wheel, reducer, rope, micro motor, etc.);

FIG2 is a schematic structural diagram of a winding rope unit;

FIG3 is a side view of the winding rope mechanism;

Figure 4 is a top view of the main mechanism for winding the rope when the incomplete gear plate rotates 180° (excluding the grooved wheel, reducer, rope, micro motor, etc.);

FIG5 is a schematic structural diagram of an incomplete gear plate;

FIG6 is a schematic diagram of the structure of a pinion;

FIG7 is a schematic structural diagram of a swing arm;

Fig. 8 is a schematic diagram of the structure of the right wobble plate;

Fig. 9 is a schematic diagram of the structure of the left wobble plate;

Figure 10 is a schematic diagram of the structure of the connecting rod;

FIG11 is a schematic structural diagram of a support column;

FIG12 is a schematic structural diagram of a cutter assembly;

FIG13 is a front view of the pull rod;

FIG14 is a top view of the pull rod;

FIG15 is a front view of the side support plate;

Fig. 16 is a front view of the sheave;

Fig. 17 is a side view of the sheave;

Figure 18 is a schematic structural diagram of the rope pressing arc plate assembly;

FIG19 is a side view of the arc plate;

FIG20 is a schematic diagram of a grid structure for rope winding of a round hay bale;

The serial numbers in the figure are explained as follows:

1. Round bale, 2. Cutter assembly, 3. Pull rod, 4. Side spring, 5. Side support plate, 6. Right swing arm, 7. Right pin shaft, 8. Right swing plate, 9. Right rotating shaft, 10. Right connecting rod, 11. Plate pin shaft, 12. Pinion, 13. Incomplete gear plate, 14. Left connecting rod, 15. Left pin shaft, 16. Left rotating shaft, 17. Left swing plate, 18. Left swing arm, 19. Groove wheel, 20. Worm gear reducer, 21. Micro motor, 22. Upper pin, 23. Arc plate, 24. Upper spring, 25. Adjusting bolt, 26. Support column, 27. Tie rope, 28. Cutter, 29. Knife holder, 30. Side bushing, 31. Pull plate, 32. Side pin, 33. Upper bushing, 34. Right fixed bearing seat, 35. Left fixed bearing seat, 36. Upper fixed plate, 37. Front side wall plate of round baler, 38. Rope pressing arc plate assembly, 39. Front part of round baler, 40. Rear part of round baler.

DETAILED DESCRIPTION

The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

Please refer to Figure 1. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

The present invention provides a rope winding mechanism for a round hay bale of a round baler, as shown in FIGS. 1 to 20 .

The rope winding mechanism of the round baler is installed between the two front side wall plates 37 of the round baler and close to the upper part of the formed round grass bale 1, and mainly includes a starting device, a rope transmission unit, a rope winding unit, and a rope cutting unit; the starting device is installed at the upper part of the rope winding mechanism. In this embodiment, the starting device is driven by a micro motor 21, and the micro motor 21 is fixed on the front side body of the round baler. The pinion 12 is connected to the output shaft of the micro motor 21 through a flat key.

The rope transmission unit is mounted at the upper part of the winding rope mechanism, and mainly includes a groove wheel 19, a rope pressing arc plate assembly 38, a worm gear reducer 20, and an incomplete gear plate 13. The groove wheel 19 has two annular grooves, and the groove wheel 19 is connected to the input shaft of the worm gear reducer 20 through a flat key. The rope pressing arc plate assembly 38 is arranged at the upper part of the groove wheel 19. The rope pressing arc plate assembly 38 consists of an arc plate 23, an upper sleeve 33, and an upper pin 22. The two convex teeth configured on the arc plate 23 match the grooves of the groove wheel 19. One end side of the arc plate 23 is fixedly connected to the upper sleeve 33. The upper pin 22 fixedly mounted on the front body of the round baler is connected to one end side pin of the arc plate 23 through the upper sleeve 33. The other end side of the arc plate 23 is connected by an adjusting bolt 25 passing through the upper fixing plate 36 and is pressed by an upper spring 24. The incomplete gear plate 13 is connected to the output shaft of the worm gear reducer 20 through a flat key. In this embodiment, the incomplete gear plate 13 is designed as a five-tooth structure, and the gear module of the incomplete gear plate 13 is the same as the gear module of the pinion 12 .

The winding rope unit is mounted at the lower part of the rope transmission unit, including a left swing plate 17, a left swing arm 18, a left connecting rod 14, a right swing plate 8, a right swing arm 6, and a right connecting rod 10. The left swing plate 17 is fixedly pressed on the left rotating shaft 16 by a nut, and the left rotating shaft 16 is supported and positioned by a bearing seat 35 fixedly mounted on the body through two bearings. The left swing arm 18 is fixedly mounted on the upper part of the left swing plate 17 by bolts. The left connecting rod 14 is pin-connected to the left swing plate 17 through a left pin shaft 15, and is pin-connected to the incomplete gear plate 13 through a plate pin shaft 11. The right swing plate 8 is fixedly pressed on the right rotating shaft 9 by a nut, and the right rotating shaft 9 is supported and positioned by a bearing seat 34 fixedly mounted on the body through two bearings. The right swing arm 6 is fixedly mounted on the upper part of the right swing plate 8 by bolts. The right connecting rod 10 is pin-connected to the right swing plate 8 through a right pin shaft 7, and is pin-connected to the incomplete gear plate 13 through a plate pin shaft 11.

The rope cutting unit is installed at the front side wall plate between the rope winding and tying mechanism and the round grass bale. The two sets of rope cutting units configured by the round grass bale rope winding and tying mechanism are installed at the front side wall plates on both sides of the round baler. The rope cutting unit mainly includes a cutter assembly 2, a support column 26, and a pull rod 3. The cutter assembly 2 includes a cutter 28, a knife seat 29, a side shaft sleeve 30, a pull plate 31 and a side pin shaft 32. The knife seat 29, the side shaft sleeve 30, and the pull plate 31 are fixedly assembled as a whole. The cutter 28 is fixedly connected to the knife seat 29 by bolts. The cutter 28, the knife seat 29, the side shaft sleeve 30, and the pull plate 31 are fixedly assembled as a whole and are pin-connected with the side pin shaft 32 fixedly mounted on the front side wall plate 37 of the round baler. The support column 26 is fixedly mounted on the front side wall plate 37 of the round baler. The pull rod 3 is pin-connected with the pull plate 31. The pull rod 3 is supported by the side support plate 5 and reset by the side spring 4.

The round bale winding mechanism of the round baler starts working when the round baler completes the round bale harvesting. When the round bale formed by the round baler reaches a predetermined density, the micromotor 21 of the starting device is energized, and the micromotor 21 drives the incomplete gear plate 13 to rotate through the pinion 12. The incomplete gear plate 13 drives the left connecting rod 14 and the right connecting rod 10 through the plate pin shaft 11. The left connecting rod 14 drives the left swing plate 17 to rotate right along with the left rotating shaft 16 through the left pin shaft 15 (i.e., rotate clockwise), and the left swing arm 18 fixed to the left swing plate 17 rotates right accordingly. At the same time, the right connecting rod 10 drives the right swing plate 8 to rotate left along with the right rotating shaft 9 through the right pin shaft 7 (i.e., rotate counterclockwise), and the right swing arm 6 fixed to the right swing plate 8 rotates left accordingly. Before the pinion 12 is disengaged from the incomplete gear plate 13, the left swing arm 18 and the right swing arm 6 swing toward the middle of the round bale. The bale rope 27 extending through the left swing arm 18 and the right swing arm 6 is brought into the rotating round bale, completing the bale rope winding and starting operation, and the micromotor 21 is powered off. When the incomplete gear plate 13 rotates one circle to complete the operation of winding the rope around a round hay bale, the incomplete gear plate 13 rotates to the meshing position with the pinion 12, and the starter device is powered on again when the next round hay bale reaches a predetermined density.

The rope 27 brought into the round hay bale is wound along with the rotation of the round hay bale and continues to drive the rope transmission unit to operate. The two ropes 27 are passed around the two annular grooves of the groove wheel 19 and guided to the left swing arm 18 and the right swing arm 6, that is, the two ropes 27 drive the groove wheel 19 to rotate. The preload force of the rope 27 is adjusted by the rope pressing arc plate assembly 38. The arc plate 23 is adjusted to rotate around the upper pin shaft 22 by adjusting the bolt 25 to control the gap between the convex teeth of the arc plate 23 and the groove of the groove wheel 19 and the preload force of the rope 27 is maintained by the upper spring 24. The rotating groove wheel 19 drives the input shaft of the worm gear reducer 20 to rotate and drives the incomplete gear plate 13 to rotate through the output shaft of the worm gear reducer 20, and then the incomplete gear plate 13 drives the left connecting rod 14 and the right connecting rod 10 through the plate pin shaft 11. The left connecting rod 14 drives the left swing plate 17 to continue to rotate right along with the left rotating shaft 16 through the left pin shaft 15, and the left swing arm 18 fixedly mounted on the left swing plate 17 continues to rotate right accordingly. When the total rotation angle of the incomplete gear plate 13 reaches 180°, the total right rotation angle of the left swing arm 18 reaches 138° from the start, and the left swing arm 18 is laid to the middle position of the round hay bale 1, and then the rope 27 drives the incomplete gear plate 13 to continue to rotate through the groove wheel 19 and the worm gear reducer 20, and the left connecting rod 14 drives the left swing plate 17 to rotate left along with the left rotating shaft 16 through the left pin shaft 15, and the left swing arm 18 fixedly mounted on the left swing plate 17 is rotated left accordingly. When the total rotation angle of the incomplete gear plate 13 reaches 360°, the cumulative total left rotation angle of the left swing arm 18 reaches 138°, and the left swing arm 18 is laid to the end side position of the round hay bale 1. At this time, the left swing arm 18 drives the cutter assembly 2 to rotate around the side pin 32 through the pull rod 3, and the cutter 28 completes the cutting operation of the binding rope 27 with the support of the support column 26, that is, the incomplete gear plate 13 rotates one circle (360°), and the left swing arm 18 rotates 138° from left to right and then 138° from right to left to complete the reciprocating rope laying operation.

At the same time, the right connecting rod 10 drives the right swing plate 8 to continue to rotate left with the right rotating shaft 9 through the right pin shaft 7, and the right swing arm 6 fixed to the right swing plate 8 continues to rotate left. When the total rotation angle of the incomplete gear plate 13 reaches 180°, the total left rotation angle of the right swing arm 6 reaches 138° from the start, and the right swing arm 6 is laid to the middle position of the round grass bale 1. Then the rope 27 drives the incomplete gear plate 13 to continue to rotate through the groove wheel 19 and the worm gear reducer 20, and the right connecting rod 10 drives the right swing plate 8 to rotate right with the right rotating shaft 9 through the right pin shaft 7, and the right swing arm 6 fixed to the right swing plate 8 rotates right accordingly. When the total rotation angle of the incomplete gear plate 13 reaches 360°, the cumulative total right rotation angle of the right swing arm 6 reaches 138°, and the right swing arm 6 is laid to the middle position of the round grass bale 1 At the end side position of the bale 1, the right swing arm 6 drives the cutter assembly 2 to rotate around the side pin 32 through the pull rod 3, and the cutter 28 completes the cutting operation of the bale rope 27 with the support of the support column 26, that is, the incomplete gear plate 13 rotates one circle (360°), and the right swing arm 6 rotates 138° from right to left and then 138° from left to right to complete the reciprocating rope laying operation; when the rope 27 extended by the left swing arm 18 and the right swing arm 6 is cut at the same time near the round bale, the reciprocating rope laying of the left swing arm 18 and the right swing arm 6 respectively realizes the rope winding of the round bale according to the diamond grid structure, and the incomplete gear plate 13 rotates one circle to complete the rope winding operation of the round bale, and the incomplete gear plate 13 rotates to the meshing position with the pinion 12. After the rope winding of the round bale is completed, the round bale is unloaded by the round baler.

After the round baler forms a round bale, the rope winding mechanism starts the rope winding operation of the round bale by driving the incomplete gear plate 13 through the pinion 12 by the micromotor 21, and then the incomplete gear plate 13 continues to rotate driven by the rope 27, the grooved wheel 19, and the worm gear reducer 20 to realize the double-swing arm reciprocating rope laying operation. The diamond grid winding structure formed can ensure the quality of the rope winding of the round bale and improve the production efficiency. Therefore, the baling performance of the round baler is greatly improved.

If the words "first", "second" and the like are used in this patent to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description, and the above words have no special meaning.

The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the invention claimed for protection. The scope of protection claimed for the present invention is defined by the attached claims and their equivalents.

In the description of the present invention, it is necessary to understand that the terms "front", "rear", "left", "right", "up", "down", "center", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims (9)

1. A rope winding mechanism for a round baler, characterized in that it comprises a starting device, a rope transmission unit, a rope winding unit and a rope cutting unit, wherein the rope transmission unit is located at the upper part and is connected to the starting device through a gear transmission; The rope transmission unit comprises an incomplete gear plate, a groove wheel and a rope pressing arc plate assembly arranged above the groove wheel, and the groove wheel is fixedly connected to the input shaft of the worm gear reducer, and the output shaft of the worm gear reducer is fixedly connected to the incomplete gear plate; The rope winding unit comprises a swing plate, a swing arm and a connecting rod respectively arranged on the left and right sides, and the swing arm is fixedly connected to the swing plate, the connecting rod is rotatably connected to the swing plate through a pin shaft, and the corresponding connecting rods on the left and right sides are rotatably connected to the incomplete gear plate through the same pin shaft, and the swing arm is also provided with a rope threading hole for passing the rope along the axial direction; When the swing arm swings, the rope passing through the rope holes on the left and right sides of the swing arm is brought into the rotating round hay bale and is wound around the rotating round hay bale; The rope cutting units are respectively arranged on the left and right sides and each comprises a cutter assembly and a pull rod rotatably connected thereto, and the cutter assembly is arranged at the front side wall plate between the rope winding unit and the round grass bale and cuts the rope. 2. A rope winding and tying mechanism for round balers according to claim 1, characterized in that: the rope winding and tying unit comprises a left swing plate, a left swing arm, a left connecting rod, and a right swing plate, a right swing arm, and a right connecting rod; The left swing arm is fixed on the left swing plate, one end of the left connecting rod is rotatably connected to the left swing plate through a pin shaft, and the other end is connected to the right connecting rod and rotatably connected to the incomplete gear plate through the same pin shaft; The right swing arm is fixed on the right swing plate, one end of the right connecting rod is rotatably connected to the right swing plate through a pin shaft, and the other end is connected to the left connecting rod and rotatably connected to the incomplete gear plate through the same pin shaft; The left swing plate and the right swing plate can be rotatably fixed on the machine body at the corresponding side. 3. A round grass bale winding rope mechanism for a round baler according to claim 1, characterized in that: the cutter assembly includes a cutter fixed on a cutter seat and a pull plate for rotationally connecting to the pull rod, and a side shaft sleeve is fixed between the pull plate and the cutter seat and is rotationally connected to a side pin fixed on the front side wall plate through the side shaft sleeve. 4. A rope winding mechanism for a round baler for round hay bales according to claim 3, characterized in that the end of the pull rod passes through a side support plate fixed on the front side wall plate and is reset by a corresponding reset spring. 5. A round grass bale winding and tying rope mechanism for a round baler according to any one of claims 1 to 4, characterized in that: the starting device comprises a micromotor and a pinion gear, the pinion gear is fixedly connected to the output shaft of the micromotor, and the incomplete gear plate is meshed with the matching pinion gear for transmission, and the pinion gear is drivingly connected to the micromotor. 6. A round bale winding and tying rope mechanism for a round baler according to claim 5, characterized in that: the incomplete gear plate is set to a five-tooth structure, and the module of the small gear is set to be the same as the module of the incomplete gear plate. 7. A rope winding mechanism for a round baler for round hay bales according to claim 5, characterized in that: the rope pressing arc plate assembly comprises an arc plate and an adjustable clamping device arranged on the upper part of the arc plate, one end of the arc plate is rotatably connected to a pin shaft fixed to the front side of the machine body and its inner end surface is matched with the outer end surface of the groove wheel, and the adjustable clamping device points radially to the center of the groove wheel and can adjust the contact pressure between the arc plate and the groove wheel. 8. A round hay bale winding rope mechanism for a round baler according to claim 7, characterized in that: the adjustable clamping device comprises an upper fixing plate, an adjusting bolt fixed on the arc plate and an upper spring sleeved on the adjusting bolt, the upper fixing plate is located outside the upper spring and connected to the adjusting bolt. 9. A rope winding mechanism for a round baler according to claim 7, characterized in that: two grooves arranged along the circumferential direction are provided on the outer end surface of the groove wheel, and two convex teeth corresponding to the grooves are provided on the inner end surface of the arc plate.