Automatic knotting and binding mechanism

Abstract

This invention relates to the field of sugarcane harvesting technology, specifically to an automatic knotting and binding mechanism. It includes an upper support frame and a lower support frame. A long shaft is rotatably mounted on the front side of the lower support frame, with clamps for holding sugarcane at both ends along the axial direction of the long shaft. A push-out device is located on the rear side of the lower support frame to push the clamps radially along the long shaft. The lower support frame also includes a rope knotting device, which has clamps for clamping the rope and pneumatic shears for cutting the rope. The upper support frame symmetrically includes a rope unwinding assembly and a lifting assembly. The free end of the rope passes through the rope unwinding assembly and the lifting assembly sequentially and extends to the rope knotting device, where the clamps clamp the free end of the rope. This invention has a simple and compact structure, is easy to operate, highly stable, and highly automated, thus greatly improving the efficiency of binding and knotting. Furthermore, this mechanism is applicable to various sugarcane harvesters and is highly practical.

Description

Technical Field

[0001] This invention relates to the field of sugarcane harvesting technology, specifically to an automatic knotting and binding mechanism. Background Technology

[0002] Sugarcane is a temperate and tropical crop and a raw material for sugar production. With the rapid economic development in my country in recent years, sugarcane harvesting methods have shifted from manual to specialized machinery, leading to the emergence of sugarcane harvesters. Mechanized harvesting has replaced manual harvesting. Sugarcane harvesters mainly harvest sugarcane from the fields through their cutting and conveying mechanisms. The advent of this device has reduced the labor intensity of manual labor and accelerated the speed of sugarcane harvesting. Therefore, sugarcane harvesters have been widely used in sugarcane production.

[0003] However, after harvesting, the harvested sugarcane needs to be bundled. Some existing harvesters do not have the bundling function (such as the one with patent number 201410582502.X), requiring the use of a bundling machine, which increases costs. Alternatively, the sugarcane can be dumped on the ground and bundled manually, which increases the labor intensity. Moreover, manual operation inevitably leads to low bundling efficiency, and improper operation can easily scratch workers' hands. In addition, the fixing method is relatively simple, and the bundling is not tight, which can easily cause the bundled sugarcane to come apart, making subsequent handling inconvenient. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing an automatic knotting and binding mechanism. This solves the problem that ordinary harvesters lack binding functionality, requiring the use of binding machines, which increases costs. Alternatively, sugarcane is dumped on the ground and bound manually, increasing labor intensity. Furthermore, manual operation inevitably leads to low binding efficiency and can easily injure workers' hands if handled improperly. Additionally, the binding methods are often rudimentary, resulting in loose bindings that can cause the sugarcane to unravel, hindering subsequent handling.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an automatic knotting and binding mechanism, which is installed on a sugarcane harvester, includes an upper support frame and a lower support frame. A long shaft is rotatably provided on the front side of the lower support frame, and clamps for holding sugarcane are provided at both ends along the axial direction of the long shaft. A push-out device for pushing the clamps to rotate radially along the long shaft is provided on the rear side of the lower support frame. The lower support frame located on the front side of the long shaft is also provided with a rope knotting device. The rope knotting device is provided with a clamp for clamping the rope and a pneumatic scissors for cutting the rope.

[0006] The upper support frame is symmetrically equipped with a rope unwinding assembly for unwinding the rope and a lifting assembly for pulling the rope. The free end of the rope passes through the rope unwinding assembly and the lifting assembly in sequence and extends to the rope knotting device, where the free end of the rope is clamped by a clamp.

[0007] Furthermore, the clamp includes a large connecting rod mounted on a long shaft and movably hinged to the output end of the ejection device. A connecting shaft is provided in the middle section of the large connecting rod, and two grippers that can clamp each other are rotatably mounted on the connecting shaft. First push cylinders are provided at both ends of the large connecting rod to push the two grippers to clamp together.

[0008] Furthermore, the rope knotting device includes a base fixed to the lower support frame and having a slide rail. A cam rope winding assembly for winding the rope and knotting is slidably mounted on the base. The base is equipped with a telescopic cylinder that drives the cam rope winding assembly to reciprocate along the slide rail. Pneumatic scissors and clamps are mounted on the base in the forward direction of the cam rope winding assembly.

[0009] Furthermore, there are three clamps, which are arranged sequentially on the front, middle and rear sides of the base, and the base is equipped with a second push cylinder to drive the clamps to grip the rope.

[0010] Furthermore, the base is also equipped with a rope-blocking assembly located between the clamps on the front and middle sides. The rope-blocking assembly is equipped with a vertically arranged third push cylinder. The top of the third push cylinder is equipped with a mounting plate. A rope-blocking rod is movably hinged above the mounting plate. The output end of the third push cylinder passes through the mounting plate, and a push rod that is movably hinged to the rope-blocking rod is connected to the output end.

[0011] Furthermore, the cam winding rope assembly includes a mounting base, on which is provided an active synchronous wheel and a driven synchronous wheel that is driven to rotate by the active synchronous wheel. The mounting base is provided with a motor that drives the active synchronous wheel. An eagle beak is connected to the shaft of the driven synchronous wheel. An eagle beak hook is hinged to the eagle beak. The mounting base is also provided with a stop block that pushes the eagle beak hook to clamp the rope when the eagle beak rotates.

[0012] Furthermore, the rope unwinding assembly includes an unwinding shaft, a drive motor for rotating the unwinding shaft, and a rope guide roller assembly.

[0013] Furthermore, the lifting assembly includes a lifting cylinder and a U-shaped pressure rod located at the output end of the lifting cylinder. One end of the U-shaped pressure rod is provided with a limit wheel, and the other end of the U-shaped pressure rod is provided with a rope guide roller. The free end of the rope passes through the limit wheel.

[0014] Furthermore, the number of rope knotting devices and lifting components are the same, and the rope knotting devices and lifting components are arranged vertically opposite each other.

[0015] Furthermore, the upper support frame is equipped with two movable baffles for guiding the harvested sugarcane into the clamp.

[0016] The beneficial effects of the above solution are that by setting up a clamp, a pushing device, a rope knotting device, a rope unwinding assembly, and a lifting assembly, sugarcane is mechanically bound, eliminating the need for secondary manual processing and thus improving work efficiency. During operation, the pushing device pushes the clamp to flip, and one end of the clamp flips out to extend a lower support frame. The rope extending to the rope knotting device wraps around the sugarcane. The lifting assembly drives one end of the rope to press down towards the rope knotting device, which then knots the free end of the rope with the rope pulled down by the lifting assembly. After knotting, the sugarcane is cut by pneumatic shears, completing the binding. The clamp releases, and the bound sugarcane falls from the clamp. By installing the automatic knotting and binding mechanism on the sugarcane harvester, the problem of some existing sugarcane harvesters without automatic binding functions is solved, effectively reducing the cost of sugarcane harvesting. This invention has a simple and compact structure, is easy to operate, highly stable, and highly automated, thus greatly improving the efficiency of binding and knotting. Furthermore, this mechanism is applicable to various sugarcane harvesters and is highly practical. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure from another perspective of the present invention;

[0019] Figure 3 This is a schematic diagram of the clamp structure in this invention;

[0020] Figure 4 This is a schematic diagram of the rope knotting device in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the rope unwinding assembly in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the lifting assembly in an embodiment of the present invention. Detailed Implementation

[0023] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0024] like Figure 1 , Figure 2As shown, this embodiment provides an automatic knotting and binding mechanism. This mechanism is mounted on a sugarcane harvester and intersects with the harvester's conveying mechanism. It includes an upper support frame 1 and a lower support frame 2. A horizontally arranged long shaft 20 is rotatably mounted on the front side of the lower support frame 2. Clamps 21 for gripping sugarcane are located at both ends along the axial direction of the long shaft 20. A pushing device 22 for radially rotating the clamps 21 along the long shaft 20 is located on the rear side of the lower support frame 2. A rope knotting device 23 is also provided on the front side of the long shaft 20. The rope knotting device 23 includes clamps 24 for clamping the rope and... A pneumatic shears 25 for cutting ropes; a rope unwinding assembly 10 for unwinding ropes and a lifting assembly 11 for pulling ropes are symmetrically provided on the upper support frame 1. Two movable baffles 12 are provided on the upper support frame 1 for flowing the harvested sugarcane into the clamp 21. The free end of the rope passes through the rope unwinding assembly 10 and the lifting assembly 11 in sequence and extends to the rope knotting device 23. The free end of the rope is clamped by the clamp 24. In this embodiment, the number of rope knotting devices 23 and lifting assemblies 11 is set to 2, and the rope knotting devices 23 and lifting assemblies 11 are arranged vertically opposite each other.

[0025] During operation, the push-out device 22 pushes the clamp 21 to flip, and one end of the clamp 21 flips out to extend the lower support frame 2. The rope extending to the rope knotting device 23 wraps around the sugarcane. The lifting component 11 drives one end of the rope to press down towards the rope knotting device 23, and the rope knotting device 23 knots the free end of the rope with the rope pulled down by the lifting component 11. After knotting, the sugarcane is cut by the pneumatic shears 25, and the sugarcane is tied. The clamp 21 is released, and the tied sugarcane falls from the clamp 21. By setting the automatic knotting and binding mechanism on the sugarcane harvester, the problem of some existing sugarcane harvesters without automatic binding function is solved, effectively reducing the cost of sugarcane harvesting. Moreover, by setting the clamp 21, push-out device 22, rope knotting device 23, rope unwinding component 10 and lifting component 11, the sugarcane is tied mechanically without the need for secondary manual processing, thereby improving work efficiency.

[0026] For details, please refer to Figure 3 The clamp 21 includes a large connecting rod 210 mounted on a long shaft 20 and movably hinged to the output end of the push-out device 22. The large connecting rod 210 is arc-shaped, with pins installed at both ends. The ends of the pins are connected to hydraulic cylinder connecting rods. A connecting shaft 211 is provided in the middle section of the large connecting rod 210. One end of the connecting shaft 211 is connected to the hydraulic cylinder connecting rod. The connecting shaft 211 is rotatably equipped with two clamping jaws 212 that can clamp each other. A first pushing cylinder 213 is provided on the two pins to push the two clamping jaws 212 to clamp together. By setting the two clamping jaws 212, it can be used to clamp the sugarcane, preventing the sugarcane from falling out of the clamp 21 during the flipping process of the clamp 21, while preventing the sugarcane from becoming loose, facilitating subsequent rope binding, and ensuring a more secure binding.

[0027] For details, please refer to Figure 4 The rope knotting device 23 includes a base 230 fixed to the lower support frame 2 and having a slide rail. A cam rope winding assembly for winding the rope and knotting is slidably mounted on the base 230. The base 230 is equipped with a telescopic cylinder 231 that drives the cam rope winding assembly to reciprocate along the slide rail. Pneumatic scissors 25 and clamps 24 are mounted on the base 230 in the forward direction of the cam rope winding assembly. There are three clamps 24, which are arranged sequentially on the front, middle and rear sides of the base 230. The pneumatic scissors 25 are positioned between the middle and rear clamps 24. The free end of the rope is clamped on the two clamps 24 on the front and middle sides. The base 230 is equipped with a second push cylinder 232 that drives the clamps 24 to grip the rope. The second push cylinder 232 can push the clamps 24 to clamp the rope. The base 230 is also equipped with a positioning... The rope-blocking assembly is located between the front and middle clamps 24. The rope-blocking assembly is equipped with a vertically arranged third push cylinder 233. The top of the third push cylinder 233 is equipped with a mounting plate cylinder 234. A rope-blocking rod 235 is movably hinged above the mounting plate cylinder 234. The output end of the third push cylinder 233 passes through the mounting plate cylinder 234, and a push rod 236 that is movably hinged to the rope-blocking rod 235 is connected to the output end. During operation, after the lifting assembly 11 presses down the rope, the two clamps 24 at the front and middle clamp the rope pressed down by the lifting assembly 11. The telescopic cylinder 231 drives the cam rope winding group to move towards the clamps 24. When the cam rope winding group is pushed into place, the third push cylinder 233 drives the rope to press against the cam rope winding group through the rope-blocking rod 235, so that the cam rope winding group effectively pulls the rope to tie a knot.

[0028] Furthermore, the cam-driven rope assembly includes a mounting base 237, on which is a driving synchronous pulley and a driven synchronous pulley driven by the driving synchronous pulley. A motor 238 driving the driving synchronous pulley is mounted on the mounting base 237. A beak 239 is connected to the shaft of the driven synchronous pulley, and a beak hook 240 is hinged to the beak 239. The mounting base 237 also includes a stop block 241 that, when the beak 239 rotates, pushes the beak hook 240 to clamp the rope with the beak 239. A telescopic cylinder 231 pushes the mounting base 237 to move towards the clamps 24, causing the rope on the two clamps 24 at the front and middle to be inserted between the beak 239 and the beak hook 240. The rope-stopping rod 235 presses the rope down from the lifting assembly 11 onto the beak hook 240. The motor 238 is started, causing the beak 239 to rotate. During the rotation, the clamping block 241 pushes the beak hook 240 and the beak 239 to clamp the rope, while simultaneously knotting the rope pressed down by the lifting assembly 11 and the rope clamped by the beak hook 240 and the beak 239. After knotting, the telescopic cylinder 231 retracts, tightening the knotted rope. The pneumatic scissors 25 cuts the rope, completing the knotting. The motor 238 drives the beak 239 and the beak hook 240 to reset, the lifting assembly 11 resets, and the telescopic cylinder 231 pushes the mounting base 237 to reset, waiting for the next knotting.

[0029] For details, please refer to Figure 5 and Figure 6 The rope unwinding assembly 10 is provided with an unwinding shaft 101 rotatably mounted on the upper support frame 1. The rope is wound around the unwinding shaft 101. The upper support frame 1 is provided with a drive motor 102 that drives the unwinding shaft 101 to rotate and unwind the rope. The upper support frame 1 located below the drive motor 102 is provided with a mixing wheel bracket 103 having a rope guide roller assembly 104. The lifting assembly 11 includes a lifting cylinder 110 vertically mounted on the upper support frame 1 and a U-shaped pressure rod 11 located at the output end of the lifting cylinder 110. 1. A limit wheel is provided at one end of the U-shaped pressure bar 111, and a rope guide roller is provided at the other end of the U-shaped pressure bar 111. The automatic end of the rope passes through the rope guide roller group 104 and the limit wheel in sequence. When the lifting cylinder 110 drives the U-shaped pressure bar 111 to press down, the rope guide roller is pressed against the front clamp 24, and the limit wheel is pressed against the rear clamp 24, so that the rear clamp 24 clamps the rope, preventing the eagle beak 239 from pulling the rope on the unwinding shaft 101 when it moves, and effectively maintaining the ability to complete the knot.

[0030] The working principle of the automatic knotting and binding mechanism described above is as follows:

[0031] Sugarcane falls from between the two movable baffles 12 into the clamp 21. When a certain amount of sugarcane is piled up in the clamp 21, the two first push cylinders 213 push the two grippers 212 to clamp the sugarcane, and start the push-out device 22. The push-out device 22 pushes the large connecting rod 210 to rotate 180 degrees radially along the long axis 20, so that the sugarcane clamped by the grippers 212 rotates to the outside of the downward support frame 2. During the rotation, the rope extending to the rope knotting device 23 wraps around and binds the sugarcane. After rotation, the lifting cylinder 110 drives the U-shaped pressure rod 111 to press down, and the rope guide roller presses against the front clamp 24, and the limit wheel presses against the rear clamp 24, so that the rear clamp 24 clamps the rope, preventing the eagle beak 239 from pulling the rope on the unwinding shaft 101 when it moves.

[0032] When knotting the rope, the telescopic cylinder 231 pushes the mounting base 237 towards the clamp 24, causing the rope on the two clamps 24 at the front and middle to be inserted between the beak 239 and the beak hook 240. At the same time, the rope-stopping rod 235 presses the rope pressed down by the lifting assembly 11 onto the beak hook 240. The motor 238 is started, causing the beak 239 to rotate. During the rotation, the clamping block 241 pushes the beak hook 240 and the beak 239 to clamp the rope, while simultaneously pressing the rope pressed down by the lifting assembly 11 onto the beak. The rope clamped by hook 240 and beak 239 is knotted by rotating. After knotting, telescopic cylinder 231 retracts, tightens the knotted rope, and pneumatic scissors 25 cuts the rope, completing the knotting. Motor 238 drives beak 239 and hook 240 to reset, lifting assembly 11 resets, telescopic cylinder 231 pushes mounting base 237 to reset, waiting for the next knotting. First push cylinder 213 starts again, causing gripper 212 to loosen the bound sugarcane, allowing the bound sugarcane to fall from clamp 21.

[0033] In the description of this invention, it should be noted that the terms "upper," "lower," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely used in the specification to facilitate the description of this invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic knotting and binding mechanism, mounted on a sugarcane harvester, comprising an upper support frame and a lower support frame, characterized in that, The front side of the lower support frame is rotatably provided with a long shaft, and the two ends along the axial direction of the long shaft are provided with clamps for holding sugarcane. The rear side of the lower support frame is provided with a push-out device that pushes the clamps to rotate radially along the long shaft. The lower support frame located in front of the long shaft is also provided with a rope knotting device, which is provided with a clamp for clamping the rope and a pneumatic scissors for cutting the rope. The upper support frame is symmetrically equipped with a rope unwinding assembly for unwinding the rope and a lifting assembly for pulling the rope. The free end of the rope passes through the rope unwinding assembly and the lifting assembly in sequence and extends to the rope knotting device, where the free end of the rope is clamped by a clamp. The rope unwinding assembly includes an unwinding shaft, a drive motor for rotating the unwinding shaft, and a rope guide roller assembly; The lifting assembly includes a lifting cylinder and a U-shaped pressure rod located at the output end of the lifting cylinder. One end of the U-shaped pressure rod is provided with a limit wheel, and the other end of the U-shaped pressure rod is provided with a rope guide roller. The free end of the rope passes through the limit wheel. The rope knotting device includes a base fixed on a lower support frame and having a slide rail. A cam rope winding assembly for winding ropes and knotting is slidably mounted on the base. The base is equipped with a telescopic cylinder that drives the cam rope winding assembly to reciprocate along the slide rail. Pneumatic scissors and clamps are mounted on the base in the forward direction of the cam rope winding assembly. There are three clamps, which are located on the front, middle and rear sides of the base. The base is equipped with a second push cylinder to drive the clamps to grip the rope. The free end of the rope is clamped on the two clamps on the front and middle sides. When the lifting cylinder drives the U-shaped pressure rod to press down, the rope guide roller presses against the clamp on the front side and the limit wheel presses against the clamp on the rear side, so that the clamp on the rear side clamps the rope.

2. The automatic knotting and binding mechanism according to claim 1, characterized in that, The clamp includes a large connecting rod mounted on a long shaft and movably hinged to the output end of the ejection device. A connecting shaft is provided in the middle section of the large connecting rod, and two grippers that can clamp each other are rotatably mounted on the connecting shaft. First push cylinders are provided at both ends of the large connecting rod to push the two grippers to clamp together.

3. The automatic knotting and binding mechanism according to claim 1, characterized in that, The base is also equipped with a rope-blocking assembly between the clamps on the front and middle sides. The rope-blocking assembly is equipped with a vertically arranged third push cylinder. The top of the third push cylinder is equipped with a mounting plate. A rope-blocking rod is movably hinged above the mounting plate. The output end of the third push cylinder passes through the mounting plate, and a push rod that is movably hinged to the rope-blocking rod is connected to the output end.

4. The automatic knotting and binding mechanism according to claim 1, characterized in that, The cam-driven rope assembly includes a mounting base, on which is provided an active synchronous pulley and a driven synchronous pulley that is driven by the active synchronous pulley. The mounting base is provided with a motor that drives the active synchronous pulley. An eagle beak is connected to the shaft of the driven synchronous pulley. An eagle beak hook is hinged to the eagle beak. The mounting base is also provided with a stop block that pushes the eagle beak hook to clamp the rope when the eagle beak rotates.

5. The automatic knotting and binding mechanism according to claim 1, characterized in that, The number of rope knotting devices and lifting components are the same, and the rope knotting devices and lifting components are arranged vertically opposite each other.

6. The automatic knotting and binding mechanism according to claim 1, characterized in that, The upper support frame is equipped with two movable baffles for guiding the harvested sugarcane into the clamp.

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