Rope clamping mechanism of knotter of square bale collecting and bundling machine

Abstract

The utility model relates to the technical field of pasture processing equipment, in particular to a rope clamping mechanism of a knotter of a square bale collecting machine. Comprising a frame body, a pulley, a guide frame, a pressing assembly, a clamping bottom plate assembly, an oil cylinder and a spring connecting rod. The main body of the frame body is a rectangular strip and is provided with a guide ring, the pulley is mounted on the side surface of the frame body, and the guide frame is hinged to the pulley seat; the oil cylinder and the spring connecting rod are arranged on the bottom surface of the frame body and are connected with each other; the clamping bottom plate assembly is fixedly connected to the bottom face of the frame body, one end of the pressing assembly is fixedly connected to the spring connecting rod, and the other end of the pressing assembly is hinged to the frame body. The knotting rope penetrates through the guide ring, penetrates out of a gap between the clamping bottom plate assembly and the pressing assembly, bypasses the guide frame and the pulley and then penetrates through the large needle. The oil cylinder stretches out and draws back to drive the spring connecting rod to move, and the spring connecting rod drives the pressing assembly to rotate to clamp the knotting rope. Automatic clamping can be achieved, the clamping force can be adjusted, and the rope buckle quality is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of forage processing equipment, specifically to a rope clamping mechanism of a knotter for a square hay bale baler. Background Technology

[0002] Currently, hay bales come in various forms, including small square bales, large square bales, and large round bales. Small square bales are suitable for small plots, while large square bales are better suited for large areas, facilitating collection and transportation. Large round bales have limited transport capacity and are not suitable for long-distance transport. Small square bales of hay are approximately 30-40 cm (width) × 40-50 cm (height) × 70-100 cm (length), with a single bale typically weighing 15-30 kg. Large square bales of hay are typically 1.1-2.2 meters long, 1.15 meters wide, and 0.8 meters high, with a single bale typically weighing 500-800 kg. Large square bale balers on the market are currently tractor-tethered and can automatically complete multiple operations such as picking up, chopping, pre-compressing, feeding, compressing, and baling of hay and straw in one pass. They offer advantages such as high automation, high efficiency, neat bale shape, tight baling, and convenient storage and transportation. However, the price is high, generally ranging from 1.38 million to 1.58 million yuan, and a manufacturer's tractor is also required, costing another 1 million yuan, bringing the total price to over 2 million yuan. This is too high for most farmers in China, and the subsequent maintenance costs are also excessive. Due to its high investment and long payback period, it has not been widely adopted in China. In China, small square bales are commonly made, with manual picking, stacking, and bundling. This not only results in low efficiency but also leads to a labor shortage as the workforce ages, causing labor costs to increase year by year.

[0003] Square bale balers can collect, compress, and bundle small square bales into larger ones. With the aid of grab buckets and lifting equipment, these larger bales can be directly loaded onto flatbed trucks for convenient transport. Only one person is needed to complete the picking and bundling operation, and the cost is far lower than that of large square bale balers. Currently, two-strand balers are in large-scale production in China, generally costing around 100,000 yuan after agricultural subsidies. With a large market share, simply equipping oneself with a square bale baler is sufficient to pick up, compress, and bundle small square bales into larger ones, eliminating the need to purchase a high-horsepower tractor; a two-strand tractor can be used, saving on tractor purchase costs, reducing manual picking time, and improving efficiency.

[0004] To transform small square bales into larger square bales, N small square bales need to be bundled together with knotting rope, and then the knotting rope is tied into a knot using a knotter and a large needle assembly. The knotter is the core working component of the baler, and the rope clamping mechanism is the main working component of the knotter. To ensure that the knotted rope is strong, reliable, and does not come undone, the knotting rope needs to be clamped with a certain force during knotting to provide the required tension. However, the existing knotter's rope clamping mechanism has a low degree of automation and cannot achieve automatic clamping, making it unsuitable for square bale balers with high automation requirements; moreover, the clamping force cannot be adjusted according to the raw material properties and moisture content of the bales, thus affecting the quality of the knotted rope. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model provides a rope clamping mechanism for the knotter of a square straw bale baler, which can automatically clamp and adjust the clamping force to ensure the quality of the rope knot.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rope clamping mechanism for a knotter in a square straw bale baler includes a frame, pulleys, a guide frame, a clamping assembly, a clamping base plate assembly, a hydraulic cylinder, and a spring connecting rod. The frame is a rectangular strip with a guide ring. The pulley is mounted on the side of the frame, and the guide frame is hinged to the pulley seat. The hydraulic cylinder and spring connecting rod are mounted on the bottom surface of the frame and connected together. The clamping base plate assembly is fixed to the bottom surface of the frame. One end of the clamping assembly is fixed to the spring connecting rod, and the other end is hinged to the frame. The knotting rope passes through the guide ring, through the gap between the clamping base plate assembly and the clamping assembly, passes around the guide frame and pulley, and then passes through a large needle. The extension and retraction of the hydraulic cylinder drives the spring connecting rod to move, and the spring connecting rod drives the clamping assembly to rotate, clamping the knotting rope.

[0008] Furthermore, the frame includes a cylinder seat, a groove, a guide ring, a pulley seat, a U-shaped support ring, and a hinge shaft; the groove has a concave cross-section, the cylinder seat is fixed to the bottom end of the groove, the pulley seat is fixed to one side of the groove, the guide ring is fixed to the other side of the groove, the U-shaped support ring is fixed to the pulley seat, the hinge shaft is fixed to the U-shaped support ring, and the guide frame is hinged to the hinge shaft.

[0009] Furthermore, the pulley body is provided with a V-shaped groove.

[0010] Furthermore, the pulley includes a wheel body, a bearing, and a bushing; the wheel body is connected to the bushing via the bearing, the bushing is fitted onto a bolt, and the bolt is mounted on the pulley seat.

[0011] Furthermore, the guide frame includes V-shaped strips and a guide shaft; the guide shaft is vertically fixed between two mutually parallel V-shaped strips.

[0012] Furthermore, the clamping assembly includes a rotating body, a pressure plate, and a spring; the rotating body is hinged to the bottom surface of the frame, the pressure plate is connected to the rotating body, one end of the spring is fixed to the rotating body, and the other end is fixed to the pressure plate; the pressure plate is provided with a guide hole.

[0013] Furthermore, the clamping base plate assembly includes a base plate and a guide post; the base plate is fixed to the bottom surface of the frame, the guide post is vertically fixed to the base plate, and the guide post passes through the guide hole on the pressure plate.

[0014] Furthermore, the spring connecting rod includes a lead screw, a first nut, a spacer, a positioning block, a spring seat, a compression spring, and a second nut; the first nut, spacer, positioning block, spring seat, compression spring, and second nut are sequentially installed on the lead screw, and the clamping assembly is fixed to the positioning block; the position of the clamping assembly is adjusted by the spacer, and the compression degree of the compression spring is increased or decreased by adjusting the first nut and the second nut.

[0015] Furthermore, it also includes a connecting sleeve, which is fitted onto the lead screw, and the spring connecting rod is connected to the frame through the connecting sleeve.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model includes a pulley, guide frame, clamping assembly, clamping base plate assembly, hydraulic cylinder, and spring connecting rod. The knotted rope passes through the guide ring, exits through the gap between the clamping base plate assembly and the clamping assembly, passes around the guide frame and pulley, and then passes through the large needle. When the baler is full of straw and knotting or when the lifting mechanism moves upward, the piston rod in the rodless chamber of the hydraulic cylinder extends. When the piston rod extends, it drives the spring connecting rod to move to the right. The movement of the lead screw drives the clamping assembly to rotate, thereby clamping the knotted rope between the clamping assembly and the clamping base plate assembly. When oil enters the oil rod chamber, the piston rod returns, and the clamped knotted rope is in its natural state. This utility model can automatically clamp and is suitable for square straw balers with high automation requirements. This utility model provides clamping force to the clamping assembly using a spring connecting rod. The clamping force is adjusted by adjusting the elasticity of the spring in the spring connecting rod, so that the magnitude of the clamping force is determined according to the raw material properties and moisture content of the bale, ensuring that the knots formed when the bale is bundled are firm, reliable, and do not come undone, thus ensuring the quality of the knots.

[0018] 2. The main body of the frame of this utility model is a groove, and the cross-section of the groove is concave, which enhances the bending and torsional resistance of the frame and is especially suitable for bearing longitudinal or transverse loads; the groove structure can reduce the amount of material used while maintaining strength, thus achieving lightweighting.

[0019] 3. The pulley body of the present invention is provided with a V-shaped groove, which can accurately position, reduce wear, and significantly improve the safety, durability and transmission efficiency of the pulley.

[0020] 4. This utility model's clamping assembly includes a rotating body, a pressure plate, and a spring. The rotating body is hinged to the bottom surface of the frame, and the pressure plate is connected to the rotating body. One end of the spring is fixed to the rotating body, and the other end is fixed to the pressure plate. The pressure plate has a guide hole, through which the guide post of the clamping base plate assembly passes. The spring provides "flexible force application," while the guide post provides "rigid guidance." The combination of the two ensures that the clamping part possesses reliability, precision, and durability.

[0021] 5. This utility model's spring connecting rod includes a lead screw, a first nut, a spacer, a positioning block, a spring seat, a compression spring, and a second nut. The position of the clamping assembly is adjusted by the spacer, and the compression degree of the compression spring is increased or decreased by adjusting the first and second nuts. This, in turn, adjusts the clamping force to ensure the quality of the rope knot during bundling and knotting. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a schematic front view of a partial structure of the present utility model.

[0024] Figure 3 This is a schematic side view of a partial structure of the present invention.

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the frame of this utility model.

[0026] Figure 5 This is a schematic side view of the frame structure of this utility model.

[0027] Figure 6 This is a schematic cross-sectional view of the pulley structure of this utility model.

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the clamping assembly of this utility model.

[0029] Figure 8 This is a schematic cross-sectional view of the pressing assembly structure of this utility model.

[0030] Figure 9 This is a three-dimensional structural diagram of the clamping base plate assembly of this utility model.

[0031] Figure 10 This is a schematic diagram of the spring connecting rod structure of this utility model.

[0032] Figure 11 This is a schematic diagram of the installation of the clamping assembly and spring connecting rod of this utility model.

[0033] Figure 12 This is a three-dimensional structural diagram of the guide frame of this utility model.

[0034] The diagram shows the following components: 1. Frame; 2. Pulley; 3. Guide frame; 4. Clamping assembly; 5. Clamping base plate assembly; 6. Hydraulic cylinder; 7. Spring connecting rod; 8. Knotted rope; 9. Large needle; 11. Hydraulic cylinder seat; 12. Groove; 13. Guide ring; 14. Pulley seat; 15. U-shaped support ring; 16. Hinge shaft; 21. Wheel body; 22. Bearing; 23. Bushing; 24. Hole retaining ring; 25. V-groove; 31. V-shaped strip; 32. Guide shaft; 33. Hinge hole; 41. Rotating body; 42. Pressure plate; 43. Spring; 51. Base plate; 52. Guide column; 71. Lead screw; 72. First nut; 73. Spacer; 74. Positioning block; 75. Spring seat; 76. Compression spring; 77. Second nut; 78. Connecting sleeve. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can be fixed connections, detachable connections, or integral connections; they can be direct connections or indirect connections through an intermediate medium; and they can be internal connections between two components.

[0038] Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In the description of this utility model, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0041] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0042] like Figure 1-3 As shown, a rope clamping mechanism for a knotter in a square straw bale baler includes a frame 1, pulleys 2, a guide frame 3, a clamping assembly 4, a clamping base plate assembly 5, a hydraulic cylinder 6, and a spring connecting rod 7. The frame 1 is primarily rectangular. The pulleys 2 are mounted on the front side of the frame 1, and the guide frame 3 is hinged to the pulley seat. The hydraulic cylinder 6 and the spring connecting rod 7 are mounted on the bottom surface of the frame 1 and connected together. The clamping base plate assembly 5 is fixed to the bottom surface of the frame 1. One end of the clamping assembly 4 is fixed to the spring connecting rod 7, and the other end is hinged to the frame 1. The knotting rope 8 passes through a guide ring 13, exits through the gap between the clamping base plate assembly 5 and the clamping assembly 4, passes around the guide frame 3 and pulleys 2, and then passes through a large needle 9. The extension and retraction of the hydraulic cylinder 6 drives the spring connecting rod 7 to move, which in turn drives the clamping assembly 4 to rotate, clamping the knotting rope 8.

[0043] like Figure 4 , Figure 5As shown, the frame 1 includes a cylinder seat 11, a groove 12, a guide ring 13, a pulley seat 14, a U-shaped support ring 15, and a hinge shaft 16. The groove 12 is the main body of the frame 1, and its cross-section is U-shaped. The groove structure enhances the frame's resistance to bending and torsion, making it particularly suitable for bearing longitudinal or transverse loads; the groove structure also allows for weight reduction while maintaining strength.

[0044] The cylinder seat 11 is fixed to the left end of the bottom surface of the tank 12, and the cylinder 6 is mounted on the cylinder seat 11. Multiple pulley seats 14 are arranged in a row and fixed to the front side of the tank 12. In this embodiment, a total of four pulley seats 14 are provided, and the four pulley seats 14 are arranged at equal intervals on the front side of the tank 12. The pulley 2 is mounted on the pulley seats 14. The guide ring 13 is fixed to the other side of the tank 12. One end of each leg of the U-shaped support ring 15 is fixed to the pulley seat 14, and the hinge shaft 16 is fixed to the other end of the U-shaped support ring 15. The guide frame 3 is hinged to the hinge shaft 16.

[0045] like Figure 6 As shown, pulley 2 includes a wheel body 21, a bearing 22, a bushing 23, and a retaining ring 24. The wheel body 21 is connected to the bushing 23 via the bearing 22, and the wheel body 21 can rotate around its own axis. The bushing 23 is fitted onto a bolt, and the bolt is mounted on the pulley seat 41. The retaining ring 24 is installed on both sides of the bearing 22 to axially position the bearing 22.

[0046] The wheel body 21 is provided with a V-shaped groove 25, which can accurately position, reduce wear, and significantly improve the safety, durability and transmission efficiency of the pulley.

[0047] like Figure 12 As shown, the guide frame 3 includes two V-shaped strips 31 and two guide shafts 32. The guide shafts 32 are vertically fixed between the two parallel V-shaped strips 31. One guide shaft 32 is located at the bottom of the V-shaped strip 31, and the other is located at the top of the V-shaped strip 31. The top of the V-shaped strip 31 is provided with a hinge hole 33. The two parallel V-shaped strips 31 are hinged to the two ends of the hinge shaft 16 through the hinge hole 33.

[0048] like Figure 7 , Figure 8 , Figure 11 As shown, the clamping assembly 4 includes a rotating body 41, a pressure plate 42, and a spring 43. The rotating body 41 consists of a connecting shaft and side plates vertically fixed to both ends of the connecting shaft. The side plates are triangular, with one vertex fixed to the positioning block 74 of the spring connecting rod 7 by a bolt, another vertex hinged to the bottom surface of the groove 12 by a hinge shaft, and the third vertex connected to the pressure plate 42 by a bolt. One end of the spring 43 is fixed to the rotating body 41, and the other end is fixed to the pressure plate 42. The pressure plate 42 is provided with a guide hole.

[0049] like Figure 9 , Figure 11 As shown, the clamping base plate assembly 5 includes a base plate 51 and guide posts 52. The base plate 51 is fixed to the bottom surface of the groove 12 by bolts. The two guide posts 52 are vertically fixed to the base plate 51. The guide posts 52 pass through the guide holes on the pressure plate, and the pressure plate 42 moves along the guide posts 52.

[0050] like Figure 10 , Figure 11 As shown, the spring connecting rod 7 includes a lead screw 71, a first nut 72, a spacer 73, a positioning block 74, a spring seat 75, a compression spring 76, a second nut 77, and a connecting sleeve 78. The first nut 72 and the second nut 77 are threadedly connected to the lead screw 71. The spacer 73, the positioning block 74, and the spring seat 75 are sequentially sleeved on the lead screw 71, located between the first nut 72 and the second nut 77. The compression spring 76 is mounted on the spring seat 75.

[0051] One vertex of the rotating body 41 of the clamping assembly 4 is fixed to the positioning block 74 by bolts. The position of the clamping assembly 4 can be adjusted by replacing spacers 73 of different lengths. The compression degree of the compression spring 76 can be increased or decreased by adjusting the distance between the first nut 72 and the second nut 77.

[0052] The connecting sleeve 78 is fitted onto the lead screw 71, with nuts at both ends. The connecting sleeve 78 is fixed by the nuts, and its position can be adjusted. The spring connecting rod 7 is connected to the bottom surface of the groove 12 through the connecting sleeve 78.

[0053] The working principle and process of this utility model are as follows:

[0054] 1. Threading path: The knotted rope 8 passes through the guide ring 13 and through the gap between the pressure plate 42 of the clamping assembly 4 and the base plate 51 of the clamping base plate assembly 5 (see...). Figure 2 , Figure 3 After passing through the gap, the knotted rope 8 successively passes around the guide shaft 32, U-shaped support ring 15 and pulley 2 of the guide frame 3, and then passes through the needle hole of the large needle 9. The end of the knotted rope is clamped in the rope clamping disc of the knotter, ready for bundled knotting.

[0055] 2. The principle of clamping force formation of the rope clamping mechanism: When the baler is full of straw and is knotting or when the lifting mechanism moves upward, the piston rod of the rodless chamber of the tensioning cylinder 6 extends. When the piston rod extends, it drives the spring connecting rod 7 to move to the right. The movement of the lead screw 71 drives the rotating body 41 of the clamping assembly 4 to rotate upward, thereby clamping the knotted rope between the pressure plate 42 and the bottom plate 51. The magnitude of the clamping force is determined according to the raw material properties and moisture content of the straw bale to ensure that the knot formed during baling is firm, reliable, and does not come undone.

[0056] When oil enters the oil rod chamber, the piston rod returns, and the clamped knotted rope 8 is in its natural state.

[0057] 3. Method for adjusting clamping force:

[0058] The rigidity of the compression spring 76 can be increased or decreased by adjusting the distance between the first nut 72 and the second nut 77. The position of the clamping assembly 4 can be adjusted by replacing spacers 73 of different lengths.

[0059] The clamping force can be adjusted using the two methods described above to ensure the quality of the rope knots when bundling and tying the bundles.

[0060] This invention can automatically clamp the knotted rope 8, and can adapt to square bale balers with high automation requirements. This invention can adjust the clamping force so that the clamping force is determined according to the raw material properties and moisture content of the bale, ensuring that the knots formed during baling are firm, reliable, and do not come undone, thus ensuring the quality of the knots.

[0061] The above description is only a part of the specific embodiments of this utility model. The protection scope of this utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and utility model concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A rope clamping mechanism of a square bale baler knotter, characterized in that: it comprises a frame, a pulley, a guide frame, a pressing assembly, a clamping bottom plate assembly, an oil cylinder and a spring connecting rod; the frame body is a rectangular strip, provided with a guide ring, the pulley is installed on the side of the frame, and the guide frame is hinged on the pulley seat; the oil cylinder and the spring connecting rod are installed on the bottom surface of the frame, and the oil cylinder is connected with the spring connecting rod; the clamping bottom plate assembly is fixedly connected to the bottom surface of the frame, one end of the pressing assembly is fixedly connected to the spring connecting rod, and the other end is hinged to the frame; the knotting rope passes through the guide ring, passes out of the gap between the clamping bottom plate assembly and the pressing assembly, and is wound around the guide frame and the pulley and then passes through the large needle; the oil cylinder is extended and retracted to drive the spring connecting rod to move, the spring connecting rod drives the pressing assembly to rotate, and the knotting rope is clamped.

2. The rope clamping mechanism of the square bale baler knotter according to claim 1, characterized in that: the frame comprises an oil cylinder seat, a groove body, a guide ring, a pulley seat, a U-shaped support ring and a hinge shaft; the cross section of the groove body is a groove shape, the oil cylinder seat is fixedly connected to the bottom end of the groove body, the pulley seat is fixedly connected to one side of the groove body, the guide ring is fixedly connected to the other side of the groove body, the U-shaped support ring is fixedly connected to the pulley seat, the hinge shaft is fixedly connected to the U-shaped support ring, and the guide frame is hinged on the hinge shaft.

3. The rope clamping mechanism of the square bale baler knotter according to claim 1, characterized in that: the wheel body of the pulley is provided with a V-shaped groove.

4. The rope clamping mechanism of the square bale baler knotter according to claim 1, characterized in that: the pulley comprises a wheel body, a bearing and a shaft sleeve; the wheel body is connected through the bearing and the shaft sleeve, the shaft sleeve is sleeved on the bolt, and the bolt is installed on the pulley seat.

5. The rope clamping mechanism of the square bale baler knotter according to claim 1, characterized in that: the guide frame comprises a V-shaped strip and a guide shaft; the guide shaft is vertically fixed between two mutually parallel V-shaped strips.

6. The rope clamping mechanism of the square bale baler knotter according to claim 1, characterized in that: the pressing assembly comprises a rotating body, a pressing plate and a spring; the rotating body is hinged to the bottom surface of the frame, the pressing plate is connected with the rotating body, one end of the spring is fixedly connected to the rotating body, and the other end is fixedly connected to the pressing plate; the pressing plate is provided with a guide hole.

7. The rope clamping mechanism of the square bale baler knotter according to claim 6, characterized in that: the clamping bottom plate assembly comprises a bottom plate and a guide column; the bottom plate is fixedly connected to the bottom surface of the frame, and the guide column is vertically fixed to the bottom plate and passes through the guide hole of the pressing plate.

8. The rope clamping mechanism of the square bale baler knotter according to claim 1, characterized in that: the spring connecting rod comprises a lead screw, a first nut, a spacer, a positioning block, a spring seat, a compression spring and a second nut; the first nut, the spacer, the positioning block, the spring seat, the compression spring and the second nut are sequentially installed on the lead screw, and the pressing assembly is fixedly connected to the positioning block; the position of the pressing assembly is adjusted through the spacer, and the compression degree of the compression spring is increased or decreased by adjusting the first nut and the second nut.

9. The rope clamping mechanism of the square bale baler knotter according to claim 8, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The connecting sleeve is sleeved on the screw rod, and the spring connecting rod is connected with the frame body through the connecting sleeve.

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