Rope winding mechanism for round straw baler

By designing a rope winding mechanism that works in conjunction with a rope winding platform and a transmission system, the problem of straw winding mechanisms being unable to wind from beginning to end was solved, achieving tight winding of straw bales and improving the operating efficiency of the baler.

CN224343878UActive Publication Date: 2026-06-12HENAN AGRICULTURAL UNIVERSITY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HENAN AGRICULTURAL UNIVERSITY
Filing Date
2025-07-11
Publication Date
2026-06-12

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Abstract

A kind of round straw bundling machine with rope winding mechanism, including frame, fixed plate, transmission system and rope winding station are equipped on frame, rope winding station is under the action of transmission system along fixed plate reciprocating movement in horizontal direction;Rope winding station is equipped with shaft body, and shaft body is equipped with rope distribution plate below;Shaft body is rotatably arranged on rope winding station;Shaft body middle part is equipped with rope channel;Shaft body is sequentially assembled with rope winding roller and thin rope wheel from top to bottom;Rope winding roller is equipped with rope winding groove;Thin rope wheel is fixed with rope winding claw, while thin rope groove is equipped on the outer wall of thin rope wheel, and the end of thin rope groove is towards the first end of rope winding claw, and the end of rope winding claw is towards the end of rope channel;Rope distribution plate is equipped with middle gap and side gap.The utility model discloses a kind of straw bundling with rope winding mechanism, the movement of rope winding station can be wound into rope belt by thick rope and thin rope on round grass bundle, realize the effect of rope winding to grass bundle, it is convenient to use, can obtain better rope winding effect, and the rope belt that is wound is loose and dense on grass bundle.
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Description

Technical Field

[0001] This utility model belongs to the field of straw bundling technology, and in particular relates to a rope winding mechanism for a round straw baler. Background Technology

[0002] Straw baling with rope is a crucial step in the baling process of a straw baler, used to bind straw. It bundles the formed straw into tight bales, facilitating transportation, storage, and subsequent processing, and preventing the straw from scattering during handling. Common rope materials include nylon rope and polypropylene rope. Nylon rope has high strength and good abrasion resistance, but its cost is relatively high; polypropylene rope is less expensive, yet still possesses a certain degree of strength and flexibility, meeting the needs of general straw baling. The working principle is as follows: after the straw baler compresses the straw into bales, the rope-winding mechanism automatically wraps the rope around the bale, usually multiple times, and then a knotting device tightens both ends of the rope to form a secure bundle.

[0003] Currently, the method of wrapping straw with rope is as follows: Patent application CN112243706A discloses a round straw baler that can bale without stopping. This effectively solves the problem of existing technologies where the baler needs to stop moving forward every time it is wrapped to bale the straw, which greatly increases the picking time and seriously reduces the efficiency of baling operations. The technical solution is that a power transmission mechanism is installed at the lower front end of the front box of the machine side plate, a storage chamber is set at the front of the front box, a compression chamber is set at the rear of the front box, a rope winding mechanism is installed at the upper part of the front box, a hydraulic mechanism is installed on the machine side plate, and a picking mechanism is installed at the bottom of the non-chain end of the front box side plate. The rope winding mechanism and the hydraulic mechanism are respectively connected to the electrical control system. This invention has a novel and unique structure, stable and reliable performance, and can fundamentally solve the drawback of intermittent operation of round straw balers, greatly improving the work efficiency. It is an innovation in the operation mode and device of round straw balers.

[0004] The rope winding mechanism includes a DC motor, an active rope lowering roller, and a passive rope lowering roller. The active and passive rope lowering rollers are connected. One end of the DC motor of the active rope lowering roller is equipped with an active rope lowering roller sprocket, and the DC motor is equipped with a DC motor sprocket. The active rope lowering roller sprocket and the DC motor sprocket are connected by a rope lowering roller chain. The DC motor drives the active rope lowering roller to rotate. The passive rope lowering roller is equipped with binding rope. The rope winding mechanism is installed on the upper part of the front box and is used to bind round hay bales. The active and passive rope lowering rollers wind the rope around the hay bales.

[0005] In this method of wrapping the rope, the rope rotates and wraps around the bale of grass. However, this method cannot wrap the bale from beginning to end; it only wraps it in the middle, resulting in a loose appearance. Utility Model Content

[0006] The present invention aims to provide a rope winding mechanism for a round straw baler that is simple in structure and has good performance.

[0007] To solve the above technical problems, the present invention provides the following technical solution: a rope winding mechanism for a round straw baler, including a frame, a fixed plate, a transmission system and a rope winding table on the frame, the rope winding table reciprocating along the fixed plate in the horizontal direction under the action of the transmission system;

[0008] The rope winding platform is equipped with a shaft, and a rope separating plate is located below the shaft;

[0009] The shaft is rotatably mounted on the rope winding platform; a rope channel is provided in the middle of the shaft; a rope winding roller and a thin rope wheel are sequentially mounted on the shaft from top to bottom; a rope winding groove is provided on the rope winding roller; a rope winding claw is fixed on the thin rope wheel, and a thin rope groove is provided on the outer wall of the thin rope wheel, with the end of the thin rope groove facing the beginning of the rope winding claw and the end of the rope winding claw facing the end of the rope channel.

[0010] The thick rope is wound around the rope groove from bottom to top. The end of the thick rope enters the rope channel from the top of the shaft and extends out from the end of the rope channel. The thin rope enters the rope claw after winding around the thin rope groove and extends into the end of the rope channel through the rope claw.

[0011] The rope separating plate has a central gap in the middle and side gaps on both sides of the central gap;

[0012] The end of the thick rope enters the side gap, and the thin rope, after being wrapped around the thick rope, enters the middle gap.

[0013] The frame is equipped with a rope guide wheel, which has a rope groove. The end of the rope groove is equipped with a rope passage tube, and the end of the rope passage tube is set towards the lower end of the rope groove. The top of the rope groove is equipped with a rope guide tube, with one end of the rope guide tube facing the rope groove and the other end facing the rope passage.

[0014] The transmission assembly includes a transmission system and a stop pin. The guide rope pulley transmits power to the transmission system, and the stop pin is connected to the transmission system. The rope winding platform is equipped with a frame that is closed at both ends in conjunction with the stop pin, and the stop pin is located inside the frame.

[0015] The frame is rectangular.

[0016] The transmission system includes a transmission chain and transmission sprockets, with a stop pin connected to the transmission chain; the transmission sprockets include a tension wheel, a drive sprocket, and a driven sprocket, and a guide wheel transmits power to the drive sprocket.

[0017] The conveyor chain circulates between the two main gears; the tension wheel is located between the conveyor sprockets.

[0018] The tensioning pulleys include an upper tensioning pulley and a lower tensioning pulley arranged at intervals. The upper tensioning pulley is engaged with the conveyor chain and is located above the conveyor chain; the lower tensioning pulley is engaged with the conveyor sprocket and is located below the conveyor chain.

[0019] A worm gear is connected to the guide rope pulley, a worm wheel is driven to the worm gear, a first non-circular gear is driven to the worm wheel, a second non-circular gear meshes with the first non-circular gear, and the second non-circular gear is driven to the drive sprocket.

[0020] A rope pressing roller is installed on the rope winding platform, and a gap is reserved between the rope pressing roller and the rope winding roller.

[0021] Through the above technical solutions, the technical effects of this utility model are as follows: 1. The movement of the rope winding platform can wind thick and thin ropes onto the round hay bales, achieving convenient rope winding and a good winding effect. The wound ropes are spaced evenly on the hay bales. Simultaneously, at the end of the rope winding platform's travel, due to the action of the conveyor chain and the stop pin, a period of time is paused, resulting in a denser winding effect at the end of the hay bale, preventing loosening. 2. The stop pin, under the action of the conveyor chain, drives the rope winding platform to reciprocate on the fixed plate, ensuring the hay bales are fully wrapped with rope, improving the winding effect. 3. The first and second non-circular gears allow for different densities of the thick and thin ropes during winding, further improving the winding effect. 4. The rotating rope winding claws wind the thin ropes onto the thick ropes, weaving them into a mesh-like rope, achieving a good rope winding effect. 5. The installed guide pulley, rope passage tube, and rope guide tube allow the thick rope to smoothly enter the rope channel, preventing jamming. 6. The installed rope separating plate separates the thick and thin ropes, further ensuring the formation of the mesh rope. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the installation position of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of a variable speed transmission structure;

[0025] Figure 4 This is a schematic diagram of the rope winding platform structure;

[0026] Figure 5 This is a schematic diagram of the rope-splitting plate structure;

[0027] Figure 6 A diagram illustrating the effect of wrapping rope around a bale of grass.

[0028] Figure 7 This is a schematic diagram of the rope winding state of this utility model;

[0029] Figure 8 for Figure 7 Right view;

[0030] 1-Frame, 2-Fixed plate, 3-Transmission chain, 4-Stop pin, 5-Rope winding table, 6-Upper tension wheel, 7-Lower tension wheel, 8-Drive sprocket, 9-Guide wheel, 10-Rope separating plate, 11-Fine rope wheel, 12-Rope winding roller, 13-Rope winding groove, 14-Rope pressing roller, 15-Driven sprocket, 16-First non-circular gear, 17-Second non-circular gear, 18-Worm, 19-Worm wheel, 20-Worm wheel shaft, 21-Slider, 22-Guide rail, 23-Rope guide tube, 24-Upper rope tube, 25-Lower rope tube, 26-Rope winding claw, 27-Shaft, 28-Rope channel, 29-Side clearance, 30-Intermediate shaft, 31-Intermediate clearance, 32-Bearing, 33-Small cylindrical gear, 34-Large cylindrical gear, 35-Rope belt Detailed Implementation

[0031] This embodiment discloses a rope wrapping mechanism for a round straw baler. This mechanism is used in the baling mechanism to bale the straw after the straw core rotates to form a bale. As the bale continues to rotate, the rope 35 is wrapped around the bale to complete the baling.

[0032] Under the action of this mechanism, the bales rotate, winding the rope around them, thus achieving rope winding. It is worth noting that this solution only addresses the rope winding process after the bales are formed, and does not cover the bale forming process or the subsequent pushing process after rope winding.

[0033] This round straw baler uses a rope winding mechanism, such as Figure 1 and Figure 2 As shown, the device includes a frame 1, on which a fixed plate 2, a transmission system, and a rope winding table 5 are mounted. In use, the rope winding table 5, driven by the transmission system, moves horizontally back and forth along the fixed plate 2, thereby winding the rope 35 around the straw bale. It is worth noting that the frame 1 is merely the rope winding mechanism of the baler, and this embodiment only includes the function of winding rope around the outside of the straw bale. How the straw bale is formed is not within the scope of this embodiment. Furthermore, this device can be directly connected to an existing straw round baler.

[0034] Among them, the rope-winding platform 5, such as Figure 4 As shown, the system includes a frame, a shaft 27, and a rope-separating plate 10. The top of the frame is slidably mounted on a fixed plate 2, meaning that the frame reciprocates on the fixed plate 2 under the drive of the transmission system. To improve the smoothness of the frame sliding on the fixed plate 2, a slider 21 is provided at the top of the frame, and a guide rail 22 is provided on the fixed plate 2, with the slider 21 slidably mounted within the guide rail 22.

[0035] The shaft 27 is located below the frame and is rotatably mounted on the rope winding platform 5. The shaft 27 is hollow and has a rope channel 28 in its hollow part, which runs through the shaft 27 along its height.

[0036] A winding roller 12 is mounted on the shaft 27. The winding roller 12 is used to wind a thick rope onto it. The outer wall of the winding roller 12 has a winding groove 13, which is spirally arranged from bottom to top along the outer wall of the winding roller 12. The thick rope is wound onto the winding roller 12 from bottom to top along the winding groove 13. A pressure roller 14 is mounted on the side of the winding roller 12. The pressure roller 14 is rotatably connected to the winding platform 5, and a gap is reserved between the pressure roller 14 and the winding roller 12. The pressure roller 14 can press the thick rope on the winding roller 12 to ensure the winding effect of the thick rope.

[0037] To facilitate the winding of the thick rope onto the winding roller 12, a guide wheel 9 is provided on the machine body. The guide wheel 9 is rotatably mounted on the machine body. An upper rope tube 24 and a lower rope tube 25 are provided on the side of the winding roller 12, both fixed on the winding table 5. The front end of the upper rope tube 24 corresponds to the guide wheel 9, and the end of the upper rope tube 24 corresponds to the bottom end of the winding groove 13. The front end of the lower rope tube 25 corresponds to the thin rope wheel 11. The thick rope is wound on the guide wheel 9, enters the upper rope tube 24 through the guide wheel 9, enters the winding groove 13 through the upper rope tube 24, and winds along the winding groove 13 from below to above the winding roller 12.

[0038] A guide tube 23 is provided above the winding roller 12 and in conjunction with the winding groove 13, and the guide tube 23 is also fixed on the winding table 5. One end of the guide tube 23 is positioned corresponding to the top of the winding groove 13, and the other end is positioned towards the top of the rope channel 28. Thus, the thick rope wound from the top of the winding groove 13 enters the guide tube 23, exits from the guide tube 23, enters the rope channel 28, and then proceeds along the rope channel 28 to the bottom of the rope channel 28.

[0039] The above describes the winding process of the thick rope. In this embodiment, the guide rope wheel 9, the upper rope tube 24, the rope winding groove 13, and the guide rope tube 23 can smoothly guide the thick rope from the machine body into the hay bale, ensuring a smooth guiding process and preventing jamming.

[0040] A thin rope wheel 11 is mounted below the winding roller 12 and is also mounted on the shaft 27. The thin rope wheel 11 has a thin rope groove, and the thin rope is wound around the thin rope groove through the lower rope tube 25. A winding claw 26 is mounted on the thin rope wheel 11 and is fixed to the thin rope wheel 11. One end of the winding claw 26 faces the thin rope groove, and the other end faces the end of the rope channel 28, and the end of the winding claw 26 is horizontal. In this way, the thick rope will drive the winding roller 12 to rotate, thereby driving the shaft 27, the thin rope wheel 11, and the winding claw 26 to rotate. After the thick rope comes out of the rope channel 28, the thin rope is wound around the thick rope.

[0041] A rope-separating plate 10 is provided below the shaft 27; such as Figure 5 As shown, the rope separating plate 10 has a reserved hole, in which an intermediate shaft 30 is installed. Two bearings 32 are installed on the intermediate shaft 30. A side gap 29 is reserved between the reserved holes of the two bearings 32, and a middle gap 31 is reserved between the two bearings 32. In use, the thicker rope is threaded into the side gap 29, and the thinner rope is threaded into the middle gap 31.

[0042] A clearance is provided between the bearing 32 and the inner wall of the pre-drilled hole, allowing the thin rope to pass through the clearance as the bearing 32 rotates after being wound around the thick rope. The width of the rope 35 can be controlled by adjusting the distance between the two bearings.

[0043] In this way, during operation, the thick and thin ropes are fed into the hay bale. As the bale rotates, the thick and thin ropes are wound together around its circumference. Under the friction between the bale and the steel roller, the thick and thin ropes are pulled together and rotated onto the bale as it spins. This pulling of the ropes drives the winding roller 12 to rotate, which in turn drives the thin rope wheel 11 to rotate. The rotation of the thin rope wheel 11 drives the winding claw 26 to rotate, causing the thin rope to emerge from the winding claw 26 and rotate around the thick rope, thus weaving it into a mesh-like rope belt 35, improving the winding effect. Figure 7 and Figure 8 As shown.

[0044] The above description illustrates that the rope winding platform 5 reciprocates on the fixed plate 2 under the drive of the transmission assembly. The following describes the components of the transmission unit. The transmission unit includes a transmission system and a stop pin 4, which is connected to the transmission system. The stop pin 4 is located within the frame. When the thick rope is pulled, the guide wheel 9 rotates, transmitting power to the transmission system. This causes the transmission system and the stop pin 4 to move together. The movement of the stop pin 4 moves the frame, thereby moving the rope winding platform 5.

[0045] To further ensure the effectiveness of use, the frame in this embodiment is rectangular. In this way, the stop pin 4 contacts the inner wall of one side of the frame, causing the frame to move. When the stop pin 4 moves to the end of its stroke, under the action of the transmission system, the stop pin 4 moves upward along the frame and pushes the frame to move in the opposite direction, thereby realizing the cyclic transmission of the stop pin 4 and also realizing the reciprocating movement of the rope winding platform 5. As the rope winding platform 5 reciprocates, the rope is fully wound on the straw bale.

[0046] To further ensure the effectiveness of the transmission system, in this embodiment, the transmission system includes a transmission chain 3 and a transmission sprocket, and the stop pin 4 is fixed to a section of the transmission chain 3; the transmission sprocket includes a tension wheel, a drive sprocket 8 and a driven sprocket 15, and the guide wheel 9 transmits power to the drive sprocket 8.

[0047] The conveyor chain 3 circulates between the driving sprocket 8 and the driven sprocket 15; the tensioner is located between the conveyor sprockets.

[0048] The tensioning pulleys include an upper tensioning pulley 6 and a lower tensioning pulley 7 arranged at intervals. The upper tensioning pulley 6 is engaged with the conveyor chain 3 and is located above the conveyor chain 3; the lower tensioning pulley 7 is engaged with the conveyor sprocket and is located below the conveyor chain 3. The arrangement of the upper tensioning pulley 6 and the lower tensioning pulley 7 ensures the stability of the conveyor chain 3 during the conveying process.

[0049] To improve the efficiency of the guide pulley 9 in transmitting power to the drive sprocket 8, a worm gear 18 is connected to the guide pulley 9. A worm wheel 19 is connected to the worm gear 18, and a speed-changing transmission mechanism is connected to the worm wheel 19. Figure 3 As shown, the transmission mechanism includes a first non-circular gear, a second non-circular gear, a large cylindrical gear 34, and a small cylindrical gear 33. The first non-circular gear 16 is driven onto the worm gear 19, and the second non-circular gear 17 meshes with the first non-circular gear 16. The second non-circular gear 17 rotates coaxially with the large cylindrical gear 34, and the large cylindrical gear 34 meshes with the small cylindrical gear 33. The small cylindrical gear 33 is driven onto the drive sprocket 8. In this embodiment, the terms "large" and "small" for the large and small cylindrical gears are relative and do not represent specific dimensional values. "Large" for the large cylindrical gear simply means that its size is greater than that of the small cylindrical gear.

[0050] In this embodiment, the drive sprocket 8 is driven by a first non-circular gear 16 and a second non-circular gear 17. The variable transmission ratio of the non-circular gears during transmission can change the distribution density of the binding rope on the straw bale, thereby achieving a dense-sparse-dense-sparse-dense-sparse-dense effect, such as... Figure 6 As shown, this improves the rope winding effect.

[0051] Example 2 differs from Example 1 in that a guide rail 22 is provided on the fixed plate 2, and a slider 21 is provided on the rope winding platform 5 in conjunction with the guide rail 22, and the slider 21 moves on the guide rail 22.

[0052] Example 3 differs from Example 1 in that: the fixing plate 2 is vertically positioned, and an installation gap is reserved between the fixing plate 2 and the frame 1. The first non-circular gear 16 and the second non-circular gear 17 are installed within the installation gap. The guide wheel is rotatably connected to the rear of the frame 1, and the worm gear 18 and worm wheel 19 are also installed at the rear of the frame 1. The worm wheel 19 transmits power to the first non-circular gear 16 through the first power shaft. The first non-circular gear 16 and the second non-circular gear 17 mesh, and the second non-circular gear 17 transmits power to the drive sprocket 8 through a first-stage acceleration gear set, thereby causing the drive sprocket 8 to rotate.

[0053] The working process is as follows: The coils of thick rope and thin rope are rotated and installed at the rear of the frame 1. There are two coils of thick rope. After the two thick ropes come out of the coils, they pass around the guide rope wheel 9 and enter the front of the frame 1. They are wound into the upper rope tube 24 and enter the winding groove 13 of the winding roller 12 through the upper rope tube 24. They are wound along the winding groove 13 to the top of the winding roller 12 and enter the guide rope tube 23. After coming out of the guide rope tube 23, they enter the rope channel 28. The two thick ropes come out of the rope channel 28 and enter the two side gaps 29 of the pressure plate respectively, forming a forked shape.

[0054] After the thin rope is wound out, it enters the thin rope wheel 11. After exiting the thin rope groove, it enters the rope separating claw. After exiting the rope separating claw, it moves towards the rope channel 28. As the thick rope is pulled, it drives the rope winding roller 12 to rotate, which in turn causes the thin rope wheel 11 to rotate as well. Finally, the rope separating claw rotates. When the rope separating claw rotates, it wraps around the thick rope. After wrapping around the thick rope, it enters the middle gap 31 of the rope separating plate 10.

[0055] That is, above the rope separating plate 10, the thin rope and the thick rope have been wound into a net-like rope strip 35. On the rope separating plate 10, as the two bearings 32 rotate, the net-like rope strip 35 formed by the thick and thin ropes enters below the rope separating plate 10 and wraps around the hay bale.

[0056] As the mesh-like thick and thin ropes 35 are wound around the hay bale, the conveyor chain 3 moves the winding platform 5 horizontally, allowing the rope 35 to wind from one end of the hay bale to the other. During operation, the winding platform 5 travels from left to right in the first stroke and from right to left in the second stroke, forming a complete baling process. This ensures that the rope is repeatedly wound at both ends of the hay bale with intermittent stages. Furthermore, due to the use of the first non-circular gear 16 and the second non-circular gear 17, the rope 35 has varying density during winding, resulting in a better winding effect.

[0057] This utility model discloses a rope-winding device for baling straw. The movement of the rope-winding platform 5 can wind the rope strip 35 made of thick and thin ropes onto the straw bale, realizing the rope winding of the straw bale. It is easy to use and can achieve a good rope winding effect. The wound rope is sparse and dense on the straw bale. At the end of the movement of the rope-winding platform 5, due to the action of the transmission chain 3 and the stop pin 4, there will be a time interval, thereby achieving a dense rope winding effect at the end of the straw bale and avoiding the phenomenon of loosening.

Claims

1. A rope winding mechanism for a round straw baler, characterized in that: The system includes a frame, a fixed plate, a transmission system, and a rope winding platform. A slider is mounted on the rope winding platform, and a guide rail is mounted on the fixed plate. The slider slides within the guide rail. Driven by the transmission system, the rope winding platform reciprocates horizontally along the fixed plate. A shaft is mounted on the rope winding platform and rotates on it. A rope dividing plate is located below the shaft. A rope channel is located in the middle of the shaft. Rope winding rollers and thin rope wheels are sequentially mounted on the shaft from top to bottom. Rope winding rollers have rope winding grooves. Rope winding claws are fixed to the thin rope wheels, and thin rope grooves are also present on the outer wall of the thin rope wheels, with the end of the grooves facing the beginning of the rope claws and the end of the claws facing the end of the rope channel. A thick rope is wound from bottom to top around the rope winding grooves, with its end entering the rope channel from the top of the shaft and extending from the end of the rope channel. The thin rope enters the winding claw after winding around the thin rope groove, and then extends into the end of the rope channel through the winding claw; the rope separating plate has a central gap and a side gap; the end of the thick rope enters the side gap, and the thin rope can pass through the central gap.

2. The rope winding mechanism for a round straw baler as described in claim 1, characterized in that: A guide wheel is installed on the fixed plate. The guide wheel has a rope groove. A rope passage tube is provided at the end of the rope groove. The end of the rope passage tube is set towards the lower end of the rope groove. A guide tube is provided at the top of the rope groove. One end of the guide tube is set towards the rope groove and the other end is set towards the rope passage.

3. The rope winding mechanism for a round straw baler as described in claim 2, characterized in that: The transmission assembly includes a transmission system and a stop pin. The guide rope pulley transmits power to the transmission system, and the stop pin is connected to the transmission system. The rope winding platform is equipped with a frame that is closed at both ends in conjunction with the stop pin, and the stop pin is located inside the frame.

4. The rope winding mechanism for a round straw baler as described in claim 3, characterized in that: The frame is rectangular.

5. The rope winding mechanism for a round straw baler as described in claim 4, characterized in that: The transmission system includes a transmission chain and transmission sprockets, with a stop pin connected to the transmission chain; the transmission sprockets include a tension wheel, a drive sprocket, and a driven sprocket, and a guide wheel transmits power to the drive sprocket.

6. The rope winding mechanism for a round straw baler as described in claim 5, characterized in that: The conveyor chain circulates between the driving sprocket and the driven sprocket; the tensioner is located between the conveyor sprockets.

7. The rope winding mechanism for a round straw baler as described in claim 6, characterized in that: The tensioning pulleys include an upper tensioning pulley and a lower tensioning pulley arranged at intervals. The upper tensioning pulley is engaged with the conveyor chain and is located above the conveyor chain; the lower tensioning pulley is engaged with the conveyor sprocket and is located below the conveyor chain.

8. The rope winding mechanism for a round straw baler as described in claim 7, characterized in that: A worm gear is connected to the guide rope pulley, a worm wheel is driven to the worm gear, a first non-circular gear is driven to the worm wheel, a second non-circular gear meshes with the first non-circular gear, and the second non-circular gear is driven to the drive sprocket.

9. The rope winding mechanism for a round straw baler as described in any one of claims 1 to 8, characterized in that: A rope pressing roller is installed on the rope winding platform, and a gap is reserved between the rope pressing roller and the rope winding roller.