Silage feeder feeding wheel barrel body assembly welding tooling

Abstract

The application provides a silage machine feeding wheel barrel body assembly welding tool, which comprises a support, a work plate arranged on the support, a surrounding clamping mechanism arranged on the upper surface of the work plate, a plurality of barrel inner wall positioning pieces, a plurality of first pressing mechanisms and a plurality of second pressing mechanisms; the barrel inner wall positioning pieces are distributed along the inner circumferential side of the surrounding clamping mechanism; the first pressing mechanisms are distributed around the surrounding clamping mechanism and can press the surrounding clamping mechanism; a barrel pressing ring is further arranged on the inner side of the surrounding clamping mechanism; the second pressing mechanisms are distributed around the surrounding clamping mechanism and can press the barrel pressing ring; a tooth plate pressing ring is further arranged on the surrounding clamping mechanism and is clamped by a clamp between the surrounding clamping mechanism and the tooth plate pressing ring. By means of the surrounding clamping mechanism, the tooth plate pressing ring, the barrel inner wall positioning pieces, the barrel pressing ring and the pressing mechanisms, the barrel body and the gear ring to be assembled are closely positioned and integrally pressed on the work plate, the flatness of the outer gear ring of the barrel body is ensured, and assembly is facilitated.

Description

Technical Field

[0001] This invention relates to the field of forage harvester feed wheel assembly technology, specifically to a welding fixture for assembling the cylinder of a forage harvester feed wheel. Background Technology

[0002] The feed reel is part of the forage harvester's header, its function being to feed the cut corn stalks into the chopping system. Currently, most forage harvester feed reels use specialized tooling for comprehensive positioning and welding of all components, without a separate welding section for the cylinder body. Therefore, there is no universal welding tooling specifically for the cylinder body. The outer side of the feed reel's cylinder body has two rings of external teeth distributed in a circular pattern. Both rings of external teeth consist of multiple tooth plates, which are inserted into the cylinder body and welded to the inside, leaving no external weld seams. During assembly, the multiple tooth plates of each ring of external teeth are individually positioned and welded multiple times, resulting in a large workload and making it difficult to guarantee the flatness of each ring of external teeth. When the flatness does not meet the required precision, problems such as accelerated wear and chain slippage are prone to occur during operation, which not only seriously affects the operation progress but also reduces the overall lifespan of the machine. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a universal welding fixture for the feed wheel cylinder body and to ensure the flatness of the outer teeth of the cylinder body.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0005] This invention provides a welding fixture for assembling the feed wheel cylinder of a silage harvester, including a support frame with a working plate on it. The working plate has a circumferential clamping mechanism, multiple cylinder inner wall positioning components, multiple first clamping mechanisms, and multiple second clamping mechanisms. The cylinder inner wall positioning components are distributed along the inner circumference of the circumferential clamping mechanism. The first clamping mechanisms are distributed around the circumferential clamping mechanism and can clamp it. A cylinder pressure ring is also provided above the inner side of the circumferential clamping mechanism, and the second clamping mechanisms are distributed around the circumferential clamping mechanism and can clamp the cylinder pressure ring. A toothed plate pressure ring is also provided on the circumferential clamping mechanism, and the toothed plate pressure ring is clamped to the circumferential clamping mechanism by a clamp.

[0006] The beneficial effects of this invention are:

[0007] This invention utilizes a circumferential clamping mechanism to hold and support the gear ring to be assembled on the outside of the cylinder body. The gear ring is then pressed tightly by a gear plate pressure ring. The cylinder body is further positioned by positioning components on the inner wall and a cylinder body pressure ring. Finally, a first pressing mechanism and a second pressing mechanism press the cylinder body and its accessories firmly onto the working plate, achieving tight positioning of the cylinder body and its outer gear ring and ensuring the flatness of the outer gear ring. This invention is applicable to the assembly of feed wheel cylinder bodies in forage harvesters and is reusable, reducing assembly costs.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the circumferential clamping mechanism includes a column, a first half-ring, and a second half-ring. The column is fixed to the working plate. One end of the first half-ring and one end of the second half-ring are both hinged to the column. The first half-ring and the second half-ring can rotate around the column to form a ring or separate. The other end of the first half-ring and the other end of the second half-ring are connected by a snap-fit ​​structure.

[0010] When the cylinder is placed on the work plate, the first half ring and the second half ring rotate around the column to encircle it, and then the cylinder can be wrapped around it by the buckle connection, which is easy to operate.

[0011] Furthermore, both the first and second half-rings include upper and lower half-rings. The two half-rings of the first half-ring are connected by multiple connecting blocks, and the two half-rings of the second half-ring are also connected by multiple connecting blocks. When the first and second half-rings are closed together, the two half-rings of the first half-ring and the two half-rings of the second half-ring together form two circular rings. The toothed plate pressure ring includes a lower toothed plate pressure ring and an upper toothed plate pressure ring. The lower toothed plate pressure ring is clamped on the lower circular ring by a set of clamps, and the upper toothed plate pressure ring is clamped on the upper circular ring by another set of clamps.

[0012] The two rings can simultaneously support the two outer toothed rings on the outside of the cylinder. The lower outer toothed ring is clamped and positioned by the lower toothed plate pressure ring, and the upper outer toothed ring is clamped and positioned by the upper toothed plate pressure ring, which facilitates the simultaneous assembly of the two outer toothed rings on the outside of the cylinder and improves assembly efficiency.

[0013] Furthermore, both layers of the first half-ring are provided with toothed plate circumferential positioning blocks, and both layers of the second half-ring are provided with toothed plate circumferential positioning blocks.

[0014] It facilitates circumferential positioning of the toothed plate during assembly, prevents the toothed plate from rotating, and improves assembly accuracy.

[0015] Furthermore, the work plate is also provided with two brackets, which are located on both sides of the column, with one end of each bracket facing the center of the circumferential clamping mechanism; the brackets are provided with multiple rollers that can be used to roll and support the first half ring or the second half ring.

[0016] When the first and second halves rotate around the column, the rollers support the first and second halves, eliminating the need for manual labor to bear the weight of the first and second halves, making operation convenient and reducing workload.

[0017] Furthermore, a pad ring is provided below the circumferential clamping mechanism, and multiple pad blocks are provided below the pad ring, with the pad blocks connected to the working plate.

[0018] The pad ring and pad block are interchangeable. The ring-clamping mechanism can be supported by the pad ring, or the cylinder body can be placed on the pad ring. This makes it easy to adapt the height of the ring-clamping mechanism to the height of the outer toothed ring of the cylinder body, improving the versatility of the device. At the same time, it makes it easy to transition the first half ring and the second half ring from the bracket to the pad ring, reducing the height difference.

[0019] Furthermore, the outer four sides of the circumferential clamping mechanism are respectively provided with extensions, and there are four first pressing mechanisms, each pressing the upper surface of one extension.

[0020] It facilitates uniform compression of the upper surface of the circumferential clamping mechanism while leaving space above the circumferential clamping mechanism to avoid structural interference, making installation and operation convenient.

[0021] Furthermore, both the first and second clamping mechanisms include a mounting base and a support arm. The mounting base is fixed on the working plate, one end of the support arm is connected to the mounting base, and the other end is connected to a pressure head via a thread. The pressure head can move up and down when it rotates along the thread. The other end of the support arm of the first clamping mechanism extends above the circumferential clamping mechanism. The other end of the support arm of the second clamping mechanism extends above the cylinder pressure ring.

[0022] By turning the knob, the clamping mechanism can be tightly pressed onto the work plate, and the threads have strong anti-loosening ability and good stability.

[0023] Furthermore, the positioning component of the inner wall of the cylinder includes a base plate. A transition plate and a positioning plate are sequentially provided on the side of the base plate facing the inner wall of the cylinder. The positioning plate and the transition plate are connected by an elastic gasket. Both ends of the transition plate are provided with connecting plates. One end of the connecting plate is hinged to the transition plate and the other end is hinged to the base plate. A strong magnet is provided on the side of the base plate facing the transition plate. The base plate is fixed to the working plate.

[0024] The transition plate and the base plate together form a deformable quadrilateral structure, making it easy to control the distance between the transition plate and the base plate. When the transition plate is pressed down, it moves away from the base plate, causing one side of the positioning plate to press against the inner wall of the cylinder. The elastic force of the elastic pad on the positioning plate increases the clamping force, resulting in good positioning stability. After assembly, lifting the cylinder upwards will move the positioning plate upwards, while the transition plate moves closer to the base plate until a strong magnet attracts the transition plate, causing the positioning plate to detach from the inner wall of the cylinder. The assembled cylinder can be easily removed and is easy to insert into the next cylinder for assembly, making the operation convenient.

[0025] Furthermore, the working plate has rotating shafts extending coaxially from both ends, which are rotatably connected to the support. The support is equipped with a driving component, and the output end of the driving component is connected to the rotating shaft. An opening is also provided on the working plate at the position facing the inner side of the cylinder.

[0026] After the welding gun is inserted through the cylinder pressure ring to complete the front weld between the cylinder body and the outer gear ring, as well as the front weld between the inner wall of the cylinder body and the reinforcing plate 43, the working plate can be reversed by the drive component. Then, the welding gun can be inserted into the cylinder body through the opening of the working plate to perform welding on the reverse side, thereby assembling in one go, reducing welding deformation, improving assembly accuracy, and increasing work efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2 This is a schematic diagram of the ring-clamping mechanism.

[0029] Figure 3 This is a schematic diagram of the positioning component on the inner wall of the cylinder.

[0030] Figure 4 This is a structural diagram of the bracket.

[0031] Figure 5 This is a schematic diagram of the structure of the cylinder in the prior art.

[0032] In the accompanying drawings, the technical features represented by each reference numeral are as follows:

[0033] 1-Bracket; 2-Working plate; 3-Circumferential clamping mechanism; 4-Cylinder body pressure ring; 5-Cylinder body inner wall positioning component; 6-First clamping mechanism; 7-Second clamping mechanism; 8-Column; 9-First half ring; 10-Second half ring; 11-Snap-fit ​​structure; 12-Connecting block; 13-Lower toothed plate pressure ring; 14-Upper toothed plate pressure ring; 15-Toothed plate circumferential positioning block; 16-Extension; 17-Mounting base; 18-Support arm; 19-Pressure head; 20-Washer ring; 21-Washer block; 22-Bracket; 23-Seat plate; 24-Transition plate; 25-Positioning plate; 26-Strong magnet; 27-Connecting plate; 28-Elastic washer; 29-Rotating shaft; 30-Drive component; 40-Cylinder body; 41-Lower outer toothed ring; 42-Upper outer toothed ring; 43-Reinforcing plate. Detailed Implementation

[0034] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0035] See also: This invention Figure 1-4 .

[0036] This invention provides a welding fixture for assembling the feed wheel cylinder of a silage harvester, including a support 1. A working plate 2 is mounted on the support 1. The working plate 2 is equipped with a circumferential clamping mechanism 3, multiple cylinder inner wall positioning components 5, multiple first pressing mechanisms 6, and multiple second pressing mechanisms 7. The cylinder inner wall positioning components 5 are distributed along the inner circumference of the circumferential clamping mechanism 3. The first pressing mechanisms 6 are distributed around the circumferential clamping mechanism 3 and can press against it. A cylinder pressure ring 4 is also provided above the inner side of the circumferential clamping mechanism 3. The second pressing mechanisms 7 are distributed around the circumferential clamping mechanism 3 and can press against the cylinder pressure ring 4. A toothed plate pressure ring is also provided on the circumferential clamping mechanism 3, and the toothed plate pressure ring is clamped to the circumferential clamping mechanism 3 by a clamp.

[0037] principle:

[0038] When assembling the feed wheel cylinder body 40, first place the cylinder body 40 on the working plate 2, clamp it on the outside of the cylinder body 40 using the circumferential clamping mechanism 3, and position the inner wall of the cylinder body 40 using multiple cylinder body inner wall positioning parts 5; place the toothed plate that makes up the outer toothed ring of the cylinder body 40 on the circumferential clamping mechanism 3 and insert it into the cylinder body 40, press the toothed ring with the toothed plate pressure ring, and clamp the toothed plate pressure ring with the circumferential clamping mechanism 3 using a clamp; press the circumferential clamping mechanism 3 onto the working plate 2 using the first pressing mechanism 6; press the cylinder body pressure ring 4 onto the upper end face of the cylinder body 40 using the second pressing mechanism 7. In this way, the outer toothed ring of the cylinder body can be tightly positioned on the cylinder body 40, and the welder can reach into the welding gun through the cylinder body pressure ring 4 to weld and fix the toothed ring to the cylinder body 40 on the inner wall of the cylinder body 40.

[0039] Preferably, the clamp used to clamp the toothed plate pressure ring with the circumferential clamping mechanism 3 is a plurality of squeezing force clamps.

[0040] In summary, by employing this invention, the ring clamping mechanism 3 clamps the outer side of the cylinder body 40 and supports the gear ring to be assembled. The gear ring is pressed by the gear plate pressure ring. Then, the cylinder body 40 is positioned by the inner wall positioning component 5 and the cylinder body pressure ring 4 respectively. Finally, the first pressing mechanism 6 and the second pressing mechanism 7 press the cylinder body 40 and its accessories together onto the working plate 2, achieving tight positioning of the cylinder body 40 and its outer gear ring, ensuring the flatness of the outer gear ring. This invention can be used for assembling the cylinder body 40 of a forage machine feed wheel and can be reused, reducing assembly costs.

[0041] Furthermore, such as Figure 2 As shown: The circumferential clamping mechanism 3 includes a column 8, a first half-ring 9 and a second half-ring 10. The column 8 is fixed on the working plate 2. One end of the first half-ring 9 and one end of the second half-ring 10 are both hinged to the column 8. The first half-ring 9 and the second half-ring 10 can rotate around the column 8 to form a ring or separate. The other end of the first half-ring 9 and the other end of the second half-ring 10 are connected by a snap-fit ​​structure 11.

[0042] When the cylinder body 40 is placed on the working plate 2, it can be encircled by the first half ring 9 and the second half ring 10 rotating around the column 8, and then connected by buckles to hug the cylinder body 40, which is convenient to operate.

[0043] Furthermore, such as Figure 1 , 2 As shown: Both the first half-ring 9 and the second half-ring 10 include upper and lower half-rings. The two half-rings of the first half-ring 9 are connected by multiple connecting blocks 12, and the two half-rings of the second half-ring 10 are connected by multiple connecting blocks 12. When the first half-ring 9 and the second half-ring 10 are closed, the two half-rings of the first half-ring 9 and the two half-rings of the second half-ring 10 form two circular rings. The toothed plate pressure ring includes a lower toothed plate pressure ring 13 and an upper toothed plate pressure ring 14. The lower toothed plate pressure ring 13 is clamped on the lower circular ring by a set of clamps, and the upper toothed plate pressure ring 14 is clamped on the upper circular ring by another set of clamps.

[0044] The two rings can simultaneously support the two outer toothed rings on the outside of the cylinder body 40. The lower outer toothed ring 41 is clamped and positioned by the lower toothed plate pressure ring 13, and the upper outer toothed ring 42 is clamped and positioned by the upper toothed plate pressure ring 14, which facilitates the simultaneous assembly of the two outer toothed rings on the outside of the cylinder body 40 and improves assembly efficiency.

[0045] Furthermore, both layers of the first semi-ring 9 are provided with toothed plate circumferential positioning blocks 15, and both layers of the second semi-ring 10 are provided with toothed plate circumferential positioning blocks 15.

[0046] Note: Figure 2 In the middle, the toothed plate circumferential positioning block 15 on the upper half ring of the second half ring 10 is not visible; at the same time, if the toothed plate circumferential positioning block 15 on the upper half ring of the second half ring 10 is omitted, the upper outer toothed ring 42 can still be circumferentially positioned by the toothed plate circumferential positioning block 15 on the upper half ring of the first half ring 9.

[0047] It facilitates circumferential positioning of the toothed plate during assembly, prevents the toothed plate from rotating, and improves assembly accuracy.

[0048] Furthermore, such as Figure 1 , 4 As shown: The working plate 2 is also provided with two brackets 22, which are located on both sides of the column 8 respectively. One end of each bracket 22 is directly facing the center of the circumferential clamping mechanism 3. The brackets 22 are provided with multiple rollers that can be used to roll and support the first half ring 9 or the second half ring 10.

[0049] When the first half-ring 9 and the second half-ring 10 rotate around the column 8, the rollers support the first half-ring 9 and the second half-ring 10, eliminating the need for manual labor to bear the weight of the first half-ring 9 and the second half, making operation convenient and reducing labor intensity.

[0050] Furthermore, such as Figure 1 As shown: A pad ring 20 is provided below the circumferential clamping mechanism 3, and multiple pad blocks 21 are provided below the pad ring 20. The pad blocks 21 are connected to the working plate 2.

[0051] The pad ring 20 and the pad block 21 are interchangeable. The ring ring 20 can support the circumferential clamping mechanism 3, and the cylinder body 40 can be placed on the pad ring 20. This makes it easier to adapt the height of the circumferential clamping mechanism 3 to the height of the outer toothed ring of the cylinder body, thus improving the versatility of the device. At the same time, it makes it easier to transition the first half ring 9 and the second half ring 10 from the bracket 22 to the pad ring 20, thus reducing the height difference.

[0052] Furthermore, such as Figure 1 , 2 As shown: The four outer sides of the circumferential clamping mechanism 3 are respectively provided with extensions 16. There are four first pressing mechanisms 6, and each first pressing mechanism 6 presses against the upper surface of one extension 16.

[0053] This facilitates uniform pressing of the upper surface of the circumferential clamping mechanism 3, while leaving space above the circumferential clamping mechanism 3 to avoid structural interference, making installation and operation convenient.

[0054] Furthermore, such as Figure 1 As shown: Both the first pressing mechanism 6 and the second pressing mechanism 7 include a mounting base 17 and a support arm 18. The mounting base 17 is fixed on the working plate 2. One end of the support arm 18 is connected to the mounting base 17, and the other end is connected to a pressure head 19 by a thread. The pressure head 19 can move up and down when it rotates along the thread. The other end of the support arm 18 of the first pressing mechanism 6 extends above the circumferential clamping mechanism 3. The other end of the support arm 18 of the second pressing mechanism 7 extends above the cylinder pressure ring 4.

[0055] Preferably, the lower end of the pressure head 19 may be provided with an elastic friction layer such as rubber to increase the clamping force and the loosening resistance, thereby achieving a loosening effect. The pressure head 19 can press down to clamp the circumferential clamping mechanism 3 or the cylinder pressure ring 4, or it can disengage upwards.

[0056] By using the knob pressure head 19, the ring clamping mechanism 3 can be tightly pressed onto the working plate 2, and the thread has strong anti-loosening ability and good stability.

[0057] Furthermore, such as Figure 3 As shown: The inner wall positioning component 5 of the cylinder body includes a seat plate 23. A transition plate 24 and a positioning plate 25 are sequentially provided on the side of the seat plate 23 facing the inner wall of the cylinder body 40. The positioning plate 25 and the transition plate 24 are connected by an elastic gasket 28. Both ends of the transition plate 24 are provided with connecting plates 27. One end of the connecting plate 27 is hinged to the transition plate 24, and the other end is hinged to the seat plate 23. A strong magnet 26 is provided on the side of the seat plate 23 facing the transition plate 24. The seat plate 23 is fixed on the working plate 2.

[0058] The transition plate 24 is connected by connecting plates 27 at both ends and seat plate 23 to form a deformable quadrilateral structure, which makes it easy to control the distance between the transition plate 24 and the seat plate 23. When the transition plate 24 is pressed down, the transition plate 24 moves away from the seat plate 23, so that one side of the positioning plate 25 presses against the inner wall of the cylinder 40. The elastic force of the elastic pad 28 on the positioning plate 25 can increase the clamping force and the positioning stability is good. After assembly, the cylinder 40 is lifted up, which can drive the positioning plate 25 to move upward. At the same time, the transition plate 24 moves closer to the seat plate 23 until the strong magnet 26 attracts the transition plate 24, so that the positioning plate 25 is separated from the inner wall of the cylinder 40. The assembled cylinder 40 can be easily removed and it is convenient to put in the next cylinder 40 for assembly, which is convenient to operate.

[0059] Furthermore, such as Figure 1 As shown: The two ends of the working plate 2 extend coaxially with rotating shafts 29, which are rotatably connected to the support 1. The support 1 is provided with a driving component 30, and the output end of the driving component 30 is connected to the rotating shaft 29. An opening is also provided on the working plate 2 at the position directly opposite the inner side of the cylinder body 40.

[0060] Preferably, the driving component 30 can be a rocker arm, a motor, etc.

[0061] After the welding gun is inserted into the cylinder pressure ring 4 to complete the front weld between the cylinder body 40 and the outer gear ring, as well as the front weld between the inner wall of the cylinder body 40 and the reinforcing plate 43, the working plate 2 can be reversed by the driving component 30. Then, the welding gun can be inserted into the cylinder body 40 from the opening of the working plate 2 to perform the welding of the reverse weld, thereby assembling and forming in one go, reducing the amount of welding deformation, improving the assembly accuracy, and increasing the work efficiency.

[0062] In the description of this invention, it should be understood that if descriptive terms indicating orientation, direction, or positional relationship appear, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of understanding this invention and simplifying the description, and does not indicate or imply that the part, element, or whole referred to 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 invention.

[0063] Furthermore, if sequential descriptive terms such as "first," "second," etc., appear, their purpose in this specification is for ease of understanding or simplification. For example, to distinguish multiple technical features of the same type or function, which must be mentioned separately, this specification may use prefixes or suffixes to differentiate them. Therefore, they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this invention, when descriptive terms describing structural relationships are used, such as "installation," "connection," "joining," and "fixation," they should be interpreted broadly unless otherwise explicitly specified and limited. For example, "installation," "connection," and "joining" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. "Fixation" can refer to integral fixation or detachable fixation using fasteners; it can be direct fixation or fixation through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this invention can be understood based on the specific circumstances, the context, and the coherence of the preceding and following text.

[0065] In this invention, if descriptive terms containing subordinate or connecting meanings appear, such as "above" or "below" the second feature, they should not be interpreted restrictively unless otherwise explicitly specified and limited. For example, "above" or "below" can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this invention can be understood based on the specific circumstances, the context, and the coherence of the preceding and following text.

[0066] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of information available through public channels and in conjunction with the technical teachings given in this application.

Claims

1. A welding fixture for assembling the feed wheel cylinder of a silage harvester, characterized in that: The device includes a support (1), on which a working plate (2) is provided. The working plate (2) is provided with a circumferential clamping mechanism (3), multiple inner wall positioning parts (5), multiple first pressing mechanisms (6) and multiple second pressing mechanisms (7). The inner wall positioning parts (5) are distributed along the inner circumference of the circumferential clamping mechanism (3). The first pressing mechanisms (6) are distributed around the circumferential clamping mechanism (3) and can press the circumferential clamping mechanism (3). A cylinder pressing ring (4) is also provided above the inner side of the circumferential clamping mechanism (3). The second pressing mechanisms (7) are distributed around the circumferential clamping mechanism (3) and can press the cylinder pressing ring (4). A toothed pressing ring is also provided on the circumferential clamping mechanism (3). The toothed pressing ring is clamped to the circumferential clamping mechanism (3) by a clamp. The circumferential clamping mechanism (3) includes a column (8), a first half-ring (9), and a second half-ring (10). The column (8) is fixed on the working plate (2). One end of the first half-ring (9) and one end of the second half-ring (10) are both hinged to the column (8). The first half-ring (9) and the second half-ring (10) can rotate around the column (8) to form a ring or separate. The other end of the first half-ring (9) and the other end of the second half-ring (10) are connected by a snap-fit ​​structure (11). Both the first half-ring (9) and the second half-ring (10) include upper and lower half-rings. The two half-rings of the first half-ring (9) are connected by multiple connecting blocks (12), and the two half-rings of the second half-ring (10) are connected by multiple connecting blocks (12). When the first half-ring (9) and the second half-ring (10) are closed together, the two half-rings of the first half-ring (9) and the two half-rings of the second half-ring (10) are closed together to form two rings. The toothed plate pressure ring includes a lower toothed plate pressure ring (13) and an upper toothed plate pressure ring (14). The lower toothed plate pressure ring (13) is clamped on the ring located on the lower layer by a set of clamps, and the upper toothed plate pressure ring (14) is clamped on the ring located on the upper layer by another set of clamps. The first half-ring (9) has toothed plate circumferential positioning blocks (15) on both half-rings, and the second half-ring (10) has toothed plate circumferential positioning blocks (15) on both half-rings. The outer four sides of the circumferential clamping mechanism (3) are respectively provided with extensions (16), and there are four first pressing mechanisms (6), each of which presses against the upper surface of an extension (16). Both the first pressing mechanism (6) and the second pressing mechanism (7) include a mounting base (17) and a support arm (18). The mounting base (17) is fixed on the working plate (2). One end of the support arm (18) is connected to the mounting base (17), and the other end is connected to a pressure head (19) by a thread. The pressure head (19) can move up and down when it rotates along the thread. The other end of the support arm (18) of the first pressing mechanism (6) extends to the top of the circumferential clamping mechanism (3). The other end of the support arm (18) of the second pressing mechanism (7) extends to the top of the cylinder pressure ring (4). When assembling the feed wheel cylinder body (40), first place the cylinder body (40) on the working plate (2), clamp it on the outside of the cylinder body (40) with the ring clamping mechanism (3), and position the inner wall of the cylinder body (40) with multiple cylinder body inner wall positioning parts (5); place the tooth plate that makes up the outer tooth ring of the cylinder body (40) on the ring clamping mechanism (3) and insert it into the cylinder body (40), press the tooth ring with the tooth plate pressure ring, and clamp the tooth plate pressure ring with the ring clamping mechanism (3) with a clamp; press the ring clamping mechanism (3) on the working plate (2) with the first pressing mechanism (6); press the cylinder body pressure ring (4) on the upper end face of the cylinder body (40) with the second pressing mechanism (7).

2. The welding fixture for the feed wheel cylinder assembly of the silage harvester according to claim 1, characterized in that: The working plate (2) is also provided with two brackets (22), which are located on both sides of the column (8). One end of each bracket (22) is directly opposite the center of the circumferential clamping mechanism (3). The bracket (22) is provided with multiple rollers that can be used to roll and support the first half ring (9) or the second half ring (10).

3. The welding fixture for the feed wheel cylinder assembly of the silage harvester according to claim 2, characterized in that: The circling clamping mechanism (3) is provided with a pad ring (20) below it, and multiple pad blocks (21) are provided below the pad ring (20). The pad blocks (21) are connected to the working plate (2).

4. The welding fixture for the feed wheel cylinder assembly of the silage harvester according to claim 1, characterized in that: The inner wall positioning component (5) of the cylinder includes a seat plate (23). The seat plate (23) is provided with a transition plate (24) and a positioning plate (25) on the side facing the inner wall of the cylinder (40). The positioning plate (25) and the transition plate (24) are connected by an elastic gasket (28). Both ends of the transition plate (24) are provided with connecting plates (27). One end of the connecting plate (27) is hinged to the transition plate (24), and the other end is hinged to the seat plate (23). A strong magnet (26) is provided on the side of the seat plate (23) facing the transition plate (24). The seat plate (23) is fixed on the working plate (2).

5. The welding fixture for the feed wheel cylinder assembly of the silage harvester according to claim 1, characterized in that: The working plate (2) has a rotating shaft (29) extending from both ends along the same axis. The rotating shaft (29) is rotatably connected to the support (1). The support (1) is provided with a driving component (30). The output end of the driving component (30) is connected to the rotating shaft (29). The working plate (2) is also provided with an opening at the position directly opposite the inner side of the cylinder body (40).

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