A header apparatus

Abstract

The application relates to the technical field of agricultural machinery, in particular to a header device. The application provides a header device, which is provided with sliding rails in a first direction and a second direction of a rack fixing part, and a first chain wheel and a second chain wheel are installed on the sides of different sliding rails, and the first chain wheel and the second chain wheel can slide relative to the sliding rails. When the inner side of the chain ring is engaged with the chain wheel, the sliding of the chain wheel can change the shape of the chain ring. The shape of the chain ring can be flexibly adjusted, and the adaptability of the header device to different operation scenes is enhanced.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery technology, specifically to a header device. Background Technology

[0002] Silage harvester operations involve harvesting, feeding, and chopping processes. The header is the first link in the material flow, using high-speed blades to cut the crop roots and stems before feeding them into the feeding and compaction device to prepare for subsequent processes. Its performance directly affects the harvester's efficiency, chopping quality, and silage quality.

[0003] Silage harvesters are categorized into row-aligned and non-row-aligned types based on their relationship to crop rows. Row-aligned harvesters utilize either corrugated belts or stalk conveyors; non-row-aligned harvesters are classified by cutting method into disc-type and chain-blade type, which dominate the market due to their wide applicability and low agronomical requirements. Initially, the width of disc- or chain-blade harvesters in China was concentrated below 1.8 meters and in the 2-3 meter range. Later, with the adjustment of planting patterns in northern regions, silage harvesters developed towards wider, higher-horsepower, self-propelled models with widths of 3 meters and 4.5 meters, allowing operation after the harvester is connected to the main unit for power.

[0004] The current silage headers have a fixed width and cannot be adjusted. Changing the width requires dismantling the existing header and replacing it with one of a different specification. The dismantling and assembly process is cumbersome and time-consuming, and multiple sizes of headers are also required, which significantly increases costs. Utility Model Content

[0005] To address the deficiencies mentioned in the background art, this application provides a cutting table device, including a frame with a fixing part. The fixing part is provided with slide rails in both a first direction and a second direction. A first sprocket and a second sprocket are respectively mounted on one side of different slide rails, and a chain link is engaged with the first sprocket and the second sprocket on its inner side. The first sprocket and the second sprocket can slide relative to the slide rails to change the shape of the chain link.

[0006] According to one embodiment of this application, the frame further includes a mounting base, which is located on the side away from the second sprocket and is connected to the fixing part. A drive sprocket is provided on the mounting base, and the drive sprocket is connected to the mounting base through a gearbox. The drive sprocket meshes with the chain link.

[0007] According to one embodiment of this application, a nut shaft is inserted into the middle of both the first sprocket and the second sprocket. The bottom of the nut shaft has a slider with a threaded hole in the middle. The slider cooperates with the slide rail. A lead screw is provided in each slide rail. The lead screw passes through the threaded hole and is connected to a drive motor.

[0008] According to one embodiment of this application, the frame further includes an adjustment part, which is installed on the side of the fixed part near the second sprocket. The adjustment part can be adjusted relative to the fixed part along the second direction to adapt to changes in the shape of the chain link.

[0009] According to one embodiment of this application, the adjusting part has multiple guide shafts that extend along a second direction and have multiple through holes, some of which are connected to the fixing part by bolts.

[0010] According to one embodiment of the present application, the chain link includes multiple chain links, each chain link including a welding unit and a first shaft. The welding unit has a cylindrical sleeve on the side away from the first shaft. The first shaft of another chain link can be installed inside the cylindrical sleeve. The first shaft partially exposed outside the cylindrical sleeve is engaged in the slot of the sprocket.

[0011] According to one embodiment of this application, the chain link further includes a first cutter body, which is disposed on one side of the welding unit and is connected to the welding unit by bolts.

[0012] According to one embodiment of this application, the welding unit further includes a cover plate and a paddle. The cover plate is disposed on the side of the first shaft away from the first cutter body, and the paddle is disposed in the middle of the welding unit.

[0013] According to one embodiment of this application, a tool changing assembly is further included. The tool changing assembly includes a second tool body and a third tool body. Both the second and third tool bodies are mounted on the outside of the frame. The second tool body is located on the side away from the second sprocket, and the third tool body is located on the side close to the second sprocket.

[0014] According to one embodiment of this application, it further includes a first bracket, on which two symmetrically distributed racks are provided on one side, and the racks are connected to the first bracket by bolts.

[0015] Compared with the prior art, the significant technical advancement of this application lies in the following: slide rails are provided in both the first and second directions of the frame fixing part, and a first sprocket and a second sprocket are installed on one side of different slide rails, with the first sprocket and the second sprocket capable of sliding relative to the slide rails. This allows the sliding of the sprocket to change the shape of the chain link when the inner side of the chain link meshes with the sprocket. This enables flexible adjustment of the chain link shape, enhancing the adaptability of the cutting table device to different operating scenarios. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a cutting table device in full-width state, provided in an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the structure of a cutting table device in a lowering state, provided in an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the connection between the frame and the sprocket provided in an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the chain link provided in the embodiments of this application;

[0021] Figure 5 This is a schematic diagram of the structure of a link provided in an embodiment of this application;

[0022] Figure 6 This is a schematic diagram of the rack structure provided in an embodiment of this application;

[0023] Figure 7 This is a schematic diagram of the structure of the adjustment part provided in the embodiment of this application;

[0024] Figure 8 This is a schematic diagram of the structure of the nut shaft provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-First hanger; 2-Frame; 210-Fixing part; 211-Mounting base; 220-Adjusting part; 301-Drive sprocket; 302-First sprocket; 303-Second sprocket; 4-Chain link; 401-Welding unit; 402-First shaft; 403-First cutter body; 501-Gearbox; 502-Drive motor; 503-Lead screw; 6-Tool changing assembly; 610-Second cutter body; 620-Third cutter body; 7-Slide rail; 8-Nut shaft.

[0027] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0030] Secondly, it should be noted that in the description of this application, the terms "front", "rear", "left", "right", "up", "down", "inner", "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0031] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Silage harvester operations involve harvesting, feeding, and chopping processes. The header is the first link in the material flow, using high-speed blades to cut the crop roots and stems before feeding them into the feeding and compaction device to prepare for subsequent processes. Its performance directly affects the harvester's efficiency, chopping quality, and silage quality.

[0034] Silage harvesters are categorized into row-aligned and non-row-aligned types based on their relationship to crop rows. Row-aligned harvesters utilize either corrugated belts or stalk conveyors; non-row-aligned harvesters are classified by cutting method into disc-type and chain-blade type, which dominate the market due to their wide applicability and low agronomical requirements. Initially, the width of disc- or chain-blade harvesters in China was concentrated below 1.8 meters and in the 2-3 meter range. Later, with the adjustment of planting patterns in northern regions, silage harvesters developed towards wider, higher-horsepower, self-propelled models with widths of 3 meters and 4.5 meters, allowing operation after the harvester is connected to the main unit for power.

[0035] The current silage headers have a fixed width and cannot be adjusted. Changing the width requires dismantling the existing header and replacing it with one of a different specification. The dismantling and assembly process is cumbersome and time-consuming, and multiple sizes of headers are also required, which significantly increases costs.

[0036] Figure 1 This is a schematic diagram of the structure of a cutting table device in full-width state, provided in an embodiment of this application. Figure 2 This is a schematic diagram of the structure of a cutting table device in a lowering state, provided in an embodiment of this application. Figure 3 This is a schematic diagram of the connection between the frame and the sprocket provided in an embodiment of this application; Figure 4 This is a schematic diagram of the chain link provided in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of a link provided in an embodiment of this application; Figure 6 This is a schematic diagram of the rack structure provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the adjustment part provided in the embodiment of this application; Figure 8 This is a schematic diagram of the structure of the nut shaft provided in an embodiment of this application.

[0037] like Figures 1-8 As shown, this application provides a cutting table device, including a frame 2. The frame 2 has a fixing part 210. The fixing part 210 is provided with slide rails 7 in both a first direction and a second direction. A first sprocket 302 and a second sprocket 303 are respectively installed on one side of different slide rails 7. A chain link 4 is engaged with the first sprocket 302 and the second sprocket 303. The first sprocket 302 and the second sprocket 303 can slide relative to the slide rails 7 to change the shape of the chain link 4.

[0038] It should be noted that the first direction corresponds to the vertical direction in the attached drawing, and the second direction corresponds to the horizontal direction in the attached drawing. Slide rails 7 are provided in both the first and second directions of the fixing part 210 of the frame 2, and a first sprocket 302 and a second sprocket 303 are installed on one side of different slide rails 7, and the first sprocket 302 and the second sprocket 303 can slide relative to the slide rails 7. This allows the sliding of the sprocket to change the shape of the chain link 4 when the inner side of the chain link 4 meshes with the sprocket. This enables flexible adjustment of the shape of the chain link 4, enhancing the adaptability of the header device to different operating scenarios. When facing crops of different shapes or sizes, the harvesting work can be better completed by adjusting the shape of the chain link 4, improving harvesting efficiency and quality.

[0039] The adaptable chain link 4 can be matched to different working objects or environments. When encountering undulating terrain or uneven crop distribution, the shape of chain link 4 can be changed to better fit the actual conditions, ensuring stable and efficient operation of the header device. Chain link 4 can adjust its shape according to terrain changes, ensuring good contact with the ground and smooth harvesting. Because the shape of chain link 4 is adjustable, this header device can be applied to a variety of agricultural harvesting scenarios, no longer limited to specific operating conditions or crop types. Whether it's a large area of ​​plains or small-scale terraced fields, whether it's tall or short crops, the header device can meet operational needs by adjusting the shape of chain link 4, expanding the device's application range and improving its versatility and practicality.

[0040] According to one embodiment of the present application, the frame 2 further includes a mounting base 211, which is located on the side away from the second sprocket 303 and is connected to the fixing part 210. A drive sprocket 301 is provided on the mounting base 211, and the drive sprocket 301 and the mounting base 211 are connected by a gearbox 501. The drive sprocket 301 meshes with the chain link 4.

[0041] It should be noted that a drive sprocket 301 is installed on the mounting base 211 of the frame 2, and is connected to the mounting base 211 via a gearbox 501. The drive sprocket 301 meshes with the chain link 4. This structure provides a stable power source for the operation of the chain link 4. The gearbox 501 can adjust and transmit the power, so that the drive sprocket 301 drives the chain link 4 at a suitable speed and torque, ensuring that the movement of the chain link 4 is smooth and efficient when the cutting table device is working, meeting the actual operation requirements for the speed and power of the chain link 4.

[0042] The drive sprocket 301 meshes with the chain link 4 and works in conjunction with the first sprocket 302 and the second sprocket 303 to maintain the tension and movement stability of the chain link 4. During operation, the drive sprocket 301 can promptly replenish the power required for the movement of the chain link 4, ensuring that the chain link 4 maintains a good transmission state when changing shape or performing harvesting operations, avoiding problems such as chain slack or jamming, and ensuring the normal operation and work quality of the header device.

[0043] According to one embodiment provided in this application, a nut shaft 8 is inserted into the middle of the first sprocket 302 and the second sprocket 303. The bottom of the nut shaft 8 has a slider with a threaded hole in the middle. The slider cooperates with the slide rail 7. A lead screw 503 is provided in each slide rail 7. The lead screw passes through the threaded hole and is connected to a drive motor 502.

[0044] It should be noted that the nut shaft 8 inserted in the middle of the first sprocket 302 and the second sprocket 303 has a bottom slider that engages with the slide rail 7, and the lead screw 503 inside the slide rail 7 passes through the threaded hole of the slider and is driven by the drive motor 502. The drive motor 502 can control the rotation of the lead screw 503. Through the engagement of the lead screw 503 with the threaded hole of the slider, the rotational motion is converted into linear motion, thereby precisely driving the first sprocket 302 and the second sprocket 303 to slide along the slide rail 7, ensuring the accuracy and stability of the shape adjustment of the chain link 4.

[0045] The drive motor 502 enables automated control of the sprocket slippage. Operators only need to control parameters such as the start, stop, and speed of the drive motor 502 to easily change the shape of the chain link 4, improving the ease of operation and work efficiency of the cutting table device, and reducing labor costs and labor intensity.

[0046] It should also be noted that the gearbox 501, drive motor 502, and lead screw 503 constitute the drive system. The output end of the gearbox 501 is a splined shaft. The drive motor 502 is fixedly mounted on the motor mounting base. One end of the lead screw 503 is a sleeve, and the other end is a relatively long screw. The sleeve in the lead screw 503 is sleeved on the output shaft of the drive motor 502 and fixed by several evenly distributed set screws. The lead screw 503 can rotate clockwise or counterclockwise through the forward and reverse drive of the drive motor 502.

[0047] According to one embodiment of this application, the frame 2 further includes an adjustment part 220, which is installed on the side of the fixed part 210 near the second sprocket 303. The adjustment part 220 can be adjusted relative to the fixed part 210 in a second direction to adapt to changes in the shape of the chain link 4.

[0048] According to one embodiment of the present application, the adjustment part 220 has a plurality of guide shafts that extend along a second direction and have a plurality of through holes, some of which are connected to the fixing part 210 by bolts.

[0049] It should be noted that the adjusting part 220 is installed on the side of the fixing part 210 near the second sprocket 303 and can be adjusted relative to the fixing part 210 in the second direction. When the first sprocket 302 and the second sprocket 303 slide and change the shape of the chain link 4, the adjusting part 220 adjusts its position accordingly to ensure that the entire device structure is tight, maintain the normal working state of the chain link 4, avoid structural interference or abnormal operation caused by changes in the shape of the chain link 4, and ensure that the cutting table device can operate stably under various chain link 4 shapes.

[0050] The adjusting part 220 has multiple guide shafts extending along the second direction, and multiple through holes are opened on the guide shafts. Some of the through holes are connected to the fixing part 210 by bolts. The operator can select different through hole mounting bolts according to the actual needs of the change in the shape of the chain link 4, so as to fix the adjusting part 220 at different positions in the second direction, thereby precisely controlling the relative positional relationship between the adjusting part 220 and the chain link 4, and further improving the adaptability and adjustment accuracy of the cutting table device to the change in the shape of the chain link 4.

[0051] The guide shafts not only provide guidance for the adjustment of the adjusting unit 220, but also enhance the connection stability between the adjusting unit 220 and the fixing unit 210. Multiple guide shafts are evenly distributed, distributing the various forces experienced by the adjusting unit 220 during operation, ensuring the overall structure remains stable even when the adjusting unit 220 adapts to changes in the shape of the chain link 4. Even if vibration occurs or external impact occurs during the operation of the cutting table device, the adjusting unit 220 can be reliably fixed in the appropriate position, ensuring the normal operation of the chain link 4 and the overall performance of the cutting table device.

[0052] It should also be noted that the two guide shafts on the adjusting part 220 are inserted into the two guide tubes on the main body of the frame. The fixing part 210 and the adjusting part 220 are effectively connected by several bolts. By pulling the adjusting part 220 and tightening it with bolts, the entire width of the frame 2 can be adjusted to adapt to changes in the width of the chain link 4. The adjusting part 220 is welded together from an upper plate, an end plate, and two guide shafts. The end plate is located on the side of the upper plate and has two handle holes for the operator to adjust the adjusting part 220 relative to the fixing part 210. The two guide shafts are located on the lower surface of the upper plate and have several round holes. During the adjustment of the adjusting part 220, its round holes can be matched with the through holes on the two guide tubes on the main body of the frame in the fixing part 210, and then bolts can be inserted to tighten the connection.

[0053] According to one embodiment of the present application, the chain link 4 includes multiple chain links, each chain link including a welding unit 401 and a first shaft 402. The welding unit 401 has a cylindrical sleeve on the side away from the first shaft 402. The first shaft 402 of another chain link can be installed in the cylindrical sleeve. The first shaft 402, which is partially exposed outside the cylindrical sleeve, is engaged in the slot of the sprocket.

[0054] It should be noted that the chain links are connected through the engagement of cylindrical sleeves and the first shaft 402, giving the chain link 4 good flexibility and bendability. This connection method ensures smooth relative movement between the chain links and achieves stable transmission of the chain link 4 under the drive of the first sprocket 302, the second sprocket 303, and the drive sprocket 301. Whether the shape of the chain link 4 changes or during normal operation, it ensures that each chain link works collaboratively and transmits power efficiently.

[0055] According to one embodiment provided in this application, the chain link 4 further includes a first cutter body 403, which is disposed on one side of the welding unit 401 and is connected to the welding unit 401 by bolts.

[0056] It should be noted that the axial distance between the first shaft 402 in each pair of adjacent chain links is p. The cylindrical surface of the first shaft 402 can be locked in the cylindrical tooth groove of the drive sprocket 301, the first sprocket 302, and the second sprocket 303. The rotation of the drive sprocket 301 drives the movement of the chain link 4, and the first sprocket 302 and the second sprocket 303 also move under the drive of the chain link 4.

[0057] According to one embodiment of this application, the welding unit 401 further includes a cover plate and a paddle. The cover plate is disposed on the side of the first shaft 402 away from the first cutter body 403, and the paddle is disposed in the middle of the welding unit 401.

[0058] It should be noted that the cover plate is located on the side of the first shaft 402 away from the first cutter body 403, serving to protect the first shaft 402. During the operation of the header device, it prevents debris from entering the connection between the first shaft 402 and the cylindrical sleeve, reducing wear and extending the service life of the first shaft 402 and the chain links. Simultaneously, the cover plate also helps enhance the overall stability of the chain link structure, making the chain links more reliable during operation. The paddle is located in the middle of the welding unit 401. During chain link operation, the paddle can guide and organize the cut crops. On one hand, it helps to separate the cut crops from the cutting area in a timely manner, avoiding accumulation that could affect subsequent cutting operations; on the other hand, it helps guide the crops to be transported in a predetermined direction, improving the continuity and efficiency of the harvesting operation.

[0059] According to one embodiment of this application, a tool changing assembly 6 is also included. The tool changing assembly 6 includes a second tool body 610 and a third tool body 620. Both the second tool body 610 and the third tool body 620 are mounted on the outside of the frame 2. The second tool body 610 is located on the side away from the second sprocket 303, and the third tool body 620 is located on the side close to the second sprocket 303.

[0060] It should be noted that in the cutting table device of this application embodiment, the tool changing assembly 6 includes a second tool body 610 and a third tool body 620, which belong to different tool groups. When the cutting width of the cutting table device is adjusted, the second tool body 610 does not need to be replaced and remains mounted on the frame 2. However, the third tool body 620 needs to be replaced with a matching fixed tool according to the change in the cutting width of the cutting table device.

[0061] It should also be noted that the blade changing assembly 6 is fixedly mounted on the frame 2 with bolts. This mounting method greatly facilitates the replacement and adjustment of the fixed blades. In actual operation, all the first blades 403 on the chain link 4 and all the fixed blades in the blade changing assembly 6 work together to cut the crop straw. The two cooperate with each other to achieve rapid cutting of crop straw and effectively improve the working efficiency of the header device.

[0062] According to one embodiment of this application, it further includes a first bracket 1, and two symmetrically distributed frames 2 are provided on one side of the first bracket 1. The frames 2 are connected to the first bracket 1 by bolts.

[0063] It should be noted that the first mounting frame 1 has a left-right symmetrical structure and is located in the middle and rear of the entire device. The frame 2, sprocket, chain link 4, blade changing assembly 6, etc. have two parts, which are distributed in a mirror symmetrical manner. The rear of the first mounting frame 1 is connected to the feeding device of the silage harvester, thereby realizing the mounting, power input, and harvesting operation of the main unit and the header device.

[0064] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0065] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A cutting platform device, characterized in that, Includes a frame (2), the frame (2) having a fixing part (210), the fixing part (210) being provided with slide rails (7) in both a first direction and a second direction, and a first sprocket (302) and a second sprocket (303) respectively installed on one side of different slide rails (7). The inner side of the chain link (4) meshes with the first sprocket (302) and the second sprocket (303). The first sprocket (302) and the second sprocket (303) can slide relative to the slide rail (7) to change the shape of the chain link (4).

2. The cutting platform device according to claim 1, characterized in that, The frame (2) also includes a mounting base (211), which is located on the side away from the second sprocket (303) and is connected to the fixing part (210). A drive sprocket (301) is provided on the mounting base (211), and the drive sprocket (301) is connected to the mounting base (211) through a gearbox (501). The drive sprocket (301) meshes with the chain link (4).

3. The cutting platform device according to claim 2, characterized in that, The first sprocket (302) and the second sprocket (303) are each provided with a nut shaft (8) inserted in the middle. The bottom of the nut shaft (8) has a slider with a threaded hole in the middle. The slider cooperates with the slide rail (7). Each slide rail (7) is provided with a lead screw (503). The lead screw (503) passes through the threaded hole and is connected to a drive motor (502).

4. The cutting platform device according to claim 1, characterized in that, The frame (2) also includes an adjustment part (220), which is installed on the side of the fixed part (210) near the second sprocket (303). The adjustment part (220) can be adjusted relative to the fixed part (210) in a second direction to adapt to the change in the shape of the chain link (4).

5. A cutting platform device according to claim 4, characterized in that, The adjusting part (220) has multiple guide shafts that extend along the second direction and have multiple through holes, some of which are connected to the fixing part (210) by bolts.

6. A cutting platform device according to claim 1, characterized in that, The chain link (4) includes multiple chain links, each chain link including a welding unit (401) and a first shaft (402). The welding unit (401) has a cylindrical sleeve on the side away from the first shaft (402). The first shaft (402) of another chain link can be installed in the cylindrical sleeve. The first shaft (402) partially exposed outside the cylindrical sleeve is engaged in the slot of the sprocket.

7. A cutting platform device according to claim 6, characterized in that, The chain link (4) also includes a first blade (403), which is disposed on one side of the welding unit (401) and is connected to the welding unit (401) by bolts.

8. A cutting platform device according to claim 7, characterized in that, The welding unit (401) also includes a cover plate and a paddle. The cover plate is located on the side of the first shaft (402) away from the first cutter body (403), and the paddle is located in the middle of the welding unit (401).

9. A cutting platform device according to claim 1, characterized in that, It also includes a tool changing assembly (6), which includes a second tool body (610) and a third tool body (620). The second tool body (610) and the third tool body (620) are both mounted on the outside of the frame (2). The second tool body (610) is located on the side away from the second sprocket (303), and the third tool body (620) is located on the side close to the second sprocket (303).

10. A cutting platform device according to any one of claims 1-9, characterized in that, It also includes a first bracket (1), on which two symmetrically distributed frames (2) are provided on one side, and the frames (2) are connected to the first bracket (1) by bolts.

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