A flip self-locking mechanism based on silo core component assembly

Abstract

The application relates to a turnover self-locking mechanism based on assembly of a silage machine core part, which comprises a rack, an assembly platform, a turnover frame, a telescopic driving device and a self-locking structure, a vertical mounting support frame is arranged on the upper portion of one end of the rack, one end of the assembly platform is hinged to the upper end of the mounting support frame, one end of the turnover frame is hinged to the other end of the assembly platform, the telescopic driving device is assembled on the rack, the telescopic end of the telescopic driving device is connected to the other end of the turnover frame, the telescopic driving device is used for driving the other end of the turnover frame to reciprocate horizontally between the two ends of the rack, so that the assembly platform is driven to turn upward to be horizontal or turn downward, the self-locking structure is assembled on the other end of the turnover frame and is used for self-locking or unlocking the other end of the turnover frame and the rack. Advantages: the silage machine stem feeding mechanism assembly adjustment operation condition can be met, the stem feeding assembly adjustment quality is improved, and the high-end silage machine product quality and product reliability are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of forage harvester manufacturing technology, and in particular to a self-locking tilting mechanism based on the assembly of core components of a forage harvester. Background Technology

[0002] With the continuous improvement of living standards in my country, the market demand for the quality and quantity of meat and dairy products has increased dramatically. This has led to a significant increase in the demand for feed ingredients, especially high-quality silage, in the livestock industry. Therefore, the development and manufacturing of silage harvesters urgently need to move towards the high-end market. At present, all large-scale high-end silage harvesters in China are imported. To fill this market gap, our company is now developing and manufacturing large-scale high-end silage harvesters.

[0003] Currently, to improve the quality of silage harvesters, meet key manufacturing characteristics, and enhance product safety and reliability, specialized assembly and adjustment fixtures are being designed for the core components of the silage harvester during the production verification phase. The stalk feeding mechanism assembly, a core module of the silage harvester, is assembled and adjusted on a universal assembly platform. First, the feeding roller and floating roller are hoisted and welded to the supporting feeding frame. Next, the bearing seats for each roller are installed. Then, the feed drive sprocket box, roller gearbox assembly, and feed gearbox and reversing gearbox assembly are hoisted. Due to the limitations of the universal assembly platform, the coplanarity of the right-side shaft head cannot be guaranteed during the assembly of the lower feeding roller. The feed drive sprocket box and roller gearbox assembly are assembled and adjusted in a vertical position, making assembly with the feeding rollers and floating rollers inconvenient and axial clearance adjustment difficult.

[0004] In response to the above situation, it is necessary to develop a self-locking tilting mechanism that can meet the assembly conditions of silage harvesters to achieve both vertical and horizontal assembly operations, thereby improving the quality of component assembly and adjustment. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a self-locking mechanism for flipping based on the core components of a forage harvester, which effectively overcomes the defects of the prior art.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0007] A self-locking tilting mechanism based on the assembly of core components of a forage harvester includes a frame, an assembly platform, a tilting frame, a telescopic drive device, and a self-locking structure. A vertical mounting support is provided at one end of the frame. One end of the assembly platform is hinged to the upper end of the mounting support. One end of the tilting frame is hinged to the other end of the assembly platform. The telescopic drive device is mounted on the frame, and its telescopic end is connected to the other end of the tilting frame. The telescopic drive device drives the other end of the tilting frame to move horizontally back and forth between the two ends of the frame, thereby driving the assembly platform to tilt upwards to horizontal or downwards. The self-locking structure is mounted on the other end of the tilting frame and is used to self-lock or unlock with the frame when the other end of the tilting frame moves to the other end of the frame.

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

[0009] Furthermore, the aforementioned platform is a rectangular hollow frame with horizontal rails extending toward both ends on both sides. The other end of the aforementioned flipping frame is horizontally movable and connected to the two aforementioned horizontal rails on both sides.

[0010] Furthermore, each of the two horizontal tracks has a track groove extending toward both ends on one side that is close to each other, and bearings are rotatably mounted on both sides of the other end of the tilting frame. The bearings are respectively accommodated in the track grooves on the corresponding sides and can roll along the track grooves.

[0011] Furthermore, the aforementioned flipping frame is a rectangular hollow frame body, with a connecting shaft extending towards both sides at its other end. The bearings are respectively mounted at both ends of the connecting shaft, and the telescopic end of the aforementioned telescopic drive device is connected to the connecting shaft.

[0012] Furthermore, the aforementioned self-locking structure includes a base and ratchet teeth and a lever connected to both ends of the base. The base is fitted onto the middle of the connecting shaft. The ratchet teeth extend toward the other end of the frame, and the lever extends toward one end of the frame. A ratchet rack extending horizontally toward both ends is provided in the middle region inside the frame. The teeth of the ratchet rack all extend upwards at an angle toward one end of the frame. The ratchet teeth are located above the ratchet rack. The telescopic drive device is used to drive the other end of the tilting frame to tilt horizontally toward one end of the frame. During the movement, the other end of the ratchet falls down under the influence of gravity and passes through the teeth of the ratchet rack. When the telescopic drive device drives the other end of the flipping frame to move towards the other end of the platform, the other end of the ratchet falls into the tooth groove of the ratchet rack and engages with each other to prevent the telescopic drive device from retracting, thereby achieving self-locking. The lever can be pressed down under the action of external force, thereby changing the center of gravity of the ratchet, the seat and the lever, causing the ratchet to flip up and disengage from the tooth groove of the ratchet rack, thereby achieving unlocking.

[0013] Furthermore, a limiting plate is rotatably mounted on the other end of the aforementioned platform corresponding to the portion above the aforementioned ratchet rack via a bracket. The aforementioned telescopic drive device is used to drive the other end of the aforementioned flipping frame to move toward the other end of the aforementioned platform. During the movement, the upper part of the unlocked ratchet collides with the lower end of the aforementioned limiting plate, thereby causing the ratchet to flip downwards and return to its original position after the collision, and fall onto the teeth of the aforementioned ratchet rack.

[0014] Furthermore, a rotatable connecting seat is fitted onto the aforementioned connecting shaft, and the telescopic end of the aforementioned telescopic drive device is connected to the lower end of the aforementioned connecting seat.

[0015] Furthermore, a limiting block is provided at one end of the aforementioned track groove.

[0016] Furthermore, the aforementioned telescopic drive device is a hydraulic cylinder.

[0017] Furthermore, multiple climbing platforms are respectively erected on the outer side of the other end of the aforementioned platform and on the upper part of the area between the other end of the aforementioned platform and the installation support frame, with the upper height of the multiple climbing platforms increasing sequentially from one end of the aforementioned platform to the other end.

[0018] The beneficial effects of this invention are: the structural design is reasonable, which can meet the assembly and adjustment conditions of the stalk feeding mechanism assembly of the silage harvester, improve the assembly and adjustment quality of the stalk feeding assembly, and significantly enhance the quality and reliability of high-end silage harvester products. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the self-locking mechanism for tipping based on the core components of a forage harvester according to the present invention;

[0020] Figure 2 This is a schematic diagram of the self-locking tilting mechanism based on the core components of the forage harvester during use and assembly according to the present invention.

[0021] Figure 3 This is a schematic diagram of the assembly platform in the self-locking tilting mechanism based on the assembly of core components of a forage harvester according to the present invention;

[0022] Figure 4 This is a schematic diagram of the tilting frame in the tilting self-locking mechanism based on the assembly of core components of a forage harvester according to the present invention;

[0023] Figure 5 This is a schematic diagram of the frame structure of the tilting self-locking mechanism based on the core components of the forage harvester of the present invention;

[0024] Figure 6 This is a schematic diagram of the horizontal track in the self-locking mechanism for flipping based on the core components of a silage harvester, as described in this invention.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Stand; 2. Assembly platform; 3. Tilting frame; 4. Telescopic drive device; 5. Self-locking structure; 6. Climbing platform; 11. Mounting support frame; 12. Horizontal rail; 13. Limiting plate; 31. Connecting shaft; 51. Seat; 52. Ratchet; 53. Lever; 55. Ratchet rack; 121. Limiting block; 311. Bearing; 312. Connecting seat. Detailed Implementation

[0027] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0028] Example: Figure 1 and 2 As shown, the self-locking mechanism based on the core components of the silage harvester in this embodiment includes a frame 1, an assembly platform 2, a flipping frame 3, a telescopic drive device 4, and a self-locking structure 5. A vertical mounting support frame 11 is provided on the upper part of one end of the frame 1. One end of the assembly platform 2 is hinged to the upper end of the mounting support frame 11. One end of the flipping frame 3 is hinged to the other end of the assembly platform 2. The telescopic drive device 4 is mounted on the frame 1. The telescopic end of the telescopic drive device 4 is connected to the other end of the flipping frame 3. The telescopic drive device 4 is used to drive the other end of the flipping frame 3 to move horizontally back and forth between the two ends of the frame 1, thereby driving the assembly platform 2 to flip upward to horizontal or downward. The self-locking structure 5 is mounted on the other end of the flipping frame 3 and is used to self-lock or unlock with the frame 1 when the other end of the flipping frame 3 moves to the other end of the frame 1.

[0029] In this embodiment, as Figure 3 As shown, at both ends of the upper part of the assembly platform 2, there are perpendicular limiting seats e, which are used to position the core components of the silage harvester. The purpose is to enable the assembly platform 2 to meet the requirements for assembling and adjusting the clearance characteristics of the silage harvester's stalk feeding assembly a, roller gearbox assembly b, feed drive sprocket box assembly c, and feed gearbox and reversing box assembly d. Since there are assembly and adjustment operations on all five sides of the stalk feeding assembly, the limiting seats on the assembly platform 2 can limit the movement through the bottom where there are no assembly operations. This does not affect the assembly and adjustment operations, but also achieves the limiting function, ensuring the safe and reliable turning operation.

[0030] The usage process is as follows:

[0031] The telescopic drive device 4 drives the other end of the tilting frame 3 to move horizontally from the other end of the upper part of the platform 1 to one end. During the movement, the tilting frame 3 gradually approaches a vertical state from an inclined state. At the same time, the assembly platform 2 gradually tilts upward from a downward state to a horizontal state until the other end of the tilting frame 3 is pushed to the limit position at one end of the platform 1. At this position, the tilting frame 3 is horizontal. After reaching this position, the self-locking structure 5 locks the tilting frame 3 to the platform 1. If the telescopic drive device 4 is accidentally operated to retract at this time, the retraction of the telescopic drive device 4 will be hindered due to the self-locking structure 5 and the platform 1. When it is necessary to tilt the assembly platform 2 downward, the self-locking structure 5 is operated to unlock it. The telescopic drive device 4 drives the other end of the tilting frame 3 to move horizontally towards the other end of the platform 1, so that the tilting frame 3 returns to the inclined state and pulls the assembly platform 2 downward to tilt (at the limit position of retraction, the assembly platform 2 approaches a vertical state or becomes vertical). The design of this self-locking structure 5 ensures the stability of the assembly platform 2 in a horizontal state. The entire device has a reasonable structural design, which can meet the assembly and adjustment conditions of the stalk feeding mechanism assembly of the silage harvester, improve the assembly and adjustment quality of the stalk feeding assembly, and significantly enhance the quality and reliability of high-end silage harvester products.

[0032] As a preferred implementation method, such as Figure 5 As shown, the aforementioned platform 1 is a rectangular hollow frame with horizontal rails 12 extending toward its two ends on both sides. The other end of the aforementioned flipping frame 3 is horizontally connected to the two aforementioned horizontal rails 12 on both sides.

[0033] In the above implementation scheme, the stand 1 adopts a hollow frame, which facilitates the installation of other components and allows for easy observation of its internal structure from the outside. At the same time, the design of the horizontal rail 12 enables the other end of the flipping frame 3 to move correctly along the extension direction of the horizontal rail 12, making the flipping of the entire flipping frame 3 more stable.

[0034] In a preferred embodiment, the two horizontal tracks 12 are provided with track grooves extending toward both ends on their respective sides, and bearings 311 are rotatably mounted on both sides of the other end of the flipping frame 3. The bearings 311 are respectively accommodated in the track grooves on the corresponding sides and can roll along the track grooves.

[0035] In the above implementation scheme, bearing 311 is a deep groove ball bearing installed in the track groove. The reciprocating linear motion of the deep groove ball bearing installed in the track groove drives the assembly platform 2 to complete the flipping motion. The deep groove ball bearing bears a large radial force during the reciprocating linear motion. According to the force analysis of the flipping self-locking mechanism during the flipping operation, the maximum radial force that bearing 311 needs to bear is determined. Therefore, a deep groove ball bearing of appropriate specifications should be selected to extend the service life of the flipping self-locking mechanism.

[0036] In this embodiment, as Figure 4 As shown, the aforementioned tilting frame 3 is a rectangular hollow frame body, with a connecting shaft 31 extending towards both sides at its other end. Bearings 311 are respectively mounted at both ends of the connecting shaft 31, and the telescopic drive device 4's telescopic end is connected to the connecting shaft 31. Its overall structural strength is high, and it consumes relatively few materials. Generally, one end of the tilting frame 3 is provided with a transverse connecting rod, which is rotatably connected to the other end of the assembly platform 2, achieving good assembly between the two.

[0037] Generally, the tilting frame 3 includes two parallel side beams, with a connecting beam perpendicular to the two side beams connected in the middle, the connecting rod f connected between one end of the two side beams, and the connecting shaft 31 connected between the other end of the two side beams.

[0038] As a preferred implementation method, such as Figure 1 , 2As shown in Figures 4 and 5, the self-locking structure 5 includes a base 51 and ratchet 52 and lever 53 connected to both ends of the base 51. The base 51 is fitted onto the middle of the connecting shaft 31. The ratchet 52 extends toward the other end of the platform 1, and the lever 53 extends toward one end of the platform 1. A ratchet rack 55 extending horizontally toward both ends is provided in the middle region inside the platform 1. The teeth of the ratchet rack 55 all extend upward at an incline toward one end of the platform 1. The ratchet 52 is located above the ratchet rack 55. The telescopic drive device 4 is used to drive the other end of the tilting frame 3 toward the platform. One end of the frame 1 is translated, and during this process, the other end of the ratchet 52 hangs down under the action of gravity and passes through the teeth of the ratchet rack 55. When the telescopic drive device 4 drives the other end of the flipping frame 3 to translate toward the other end of the platform 1, the other end of the ratchet 52 falls into the tooth groove of the ratchet rack 55 and engages with each other to prevent the telescopic drive device 4 from retracting, thereby achieving self-locking. The lever 53 can be pressed down under the action of external force, thereby changing the center of gravity of the ratchet 52, the seat 51 and the lever 53, so that the ratchet 52 flips up and disengages from the tooth groove of the ratchet rack 55, thereby achieving unlocking.

[0039] In the above implementation scheme, in the non-locking state, the center of gravity of the self-locking structure 5 is generally biased towards the location of the ratchet 52. The ratchet 52 falls naturally under gravity and lands on the upper part of the teeth of the ratchet rack 55. Since the upper part of the ratchet rack 55 is provided with continuous teeth, during the process of the telescopic drive device 4 driving the flipping frame 3 to move towards one end of the platform 1, the ratchet rack 55 will slide along the upper teeth of the ratchet rack 55. After moving to the extreme position of one end of the platform 1, the telescopic drive device 4 stops moving, and the end of the ratchet 52 will fall into the tooth groove formed by the two teeth at the end of the ratchet rack 55 and engage in one direction, preventing the retraction of the telescopic drive device 4. When unlocking is required, the external force presses down the lever 53, changing the center of gravity of the self-locking structure 5, causing its center of gravity to shift towards the location of the lever 53. Under the action of gravity, the ratchet 52 tilts upward (flips up) and disengages from the tooth groove. At this time, the telescopic drive device 4 can retract. The entire self-locking structure 5 is reasonably and ingeniously designed, enabling it to self-lock after being extended to its limit position without manual operation.

[0040] In a preferred embodiment, a limiting plate 13 is rotatably mounted on the other end of the platform 1 corresponding to the part above the ratchet 55 via a bracket. The telescopic drive device 4 is used to drive the other end of the flipping frame 3 to move toward the other end of the platform 1. During the movement, the upper part of the unlocked ratchet 52 collides with the lower end of the limiting plate 13, so that the ratchet 52 flips back to its original position after the collision and falls onto the teeth of the ratchet 55.

[0041] In the above implementation scheme, after the self-locking structure 5 is unlocked, the telescopic drive device 4 can retract. When it retracts to near the limit position, the upper part of the ratchet 52 will collide with the lower end of the limiting plate 13, thereby pressing down the ratchet 52 and changing its center of gravity (the center of gravity is biased towards the location of the ratchet 52), so that the ratchet 52 falls back on the upper part of the ratchet rack 55, which facilitates the movement of the telescopic drive device 4 when it extends again and the subsequent self-locking operation. This design enables the self-locking structure 5 to achieve autonomous return after retraction, so as to autonomously self-lock again. The structural design is very ingenious and simple.

[0042] In this embodiment, a rotatable connecting seat 312 is fitted onto the connecting shaft 31, and the telescopic end of the telescopic drive device 4 is connected to the lower end of the connecting seat 312. This structural design facilitates the connection between the telescopic drive device 4 and the connecting shaft 31, thereby driving the other end of the flipping frame 3 to translate and achieve its flipping.

[0043] In this embodiment, as Figure 6 As shown, a limiting block 121 is provided at one end of the track groove to limit the extension limit position of the telescopic drive device 4.

[0044] In this embodiment, the telescopic drive device 4 can be a conventional hydraulic cylinder. The specific model can be flexibly and reasonably selected according to actual usage requirements, and will not be elaborated here.

[0045] In this embodiment, multiple elevated platforms 6 are respectively installed on the outer side of the other end of the aforementioned platform 1 and on the upper part of the area between the other end of the aforementioned platform 1 and the mounting support frame 11. The upper height of the multiple elevated platforms 6 increases progressively from one end of the aforementioned platform 1 to the other end. The elevated platforms 6 are designed to facilitate workers to walk up to and approach the assembly platform 2, making it convenient to assemble the core components on the assembly platform 2.

[0046] In this embodiment, considering the structural strength of the mounting support frame 11, the two sides of the mounting support frame 11 are respectively connected to the two sides of one end of the platform 1 by diagonal braces. The diagonal braces form a triangular support structure with the platform 1 and the mounting support frame 11, which effectively improves the structural stability and strength.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of 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," "below," and "under" 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.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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 the present invention. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] 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 the present invention.

Claims

1. A self-locking tilting mechanism based on the core components of a forage harvester, characterized in that: The assembly includes a frame (1), an assembly platform (2), a tilting frame (3), a telescopic drive device (4), and a self-locking structure (5). A vertical mounting support frame (11) is provided on the upper part of one end of the frame (1). One end of the assembly platform (2) is hinged to the upper end of the mounting support frame (11). One end of the tilting frame (3) is hinged to the other end of the assembly platform (2). The telescopic drive device (4) is mounted on the frame (1). The telescopic end of the telescopic drive device (4) is connected to the other end of the tilting frame (3). The telescopic drive device (4) is used to drive the other end of the tilting frame (3) to move horizontally back and forth between the two ends of the frame (1), thereby driving the assembly platform (2) to tilt upward to horizontal or tilt downward. The self-locking structure (5) is mounted on the other end of the tilting frame (3) and is used to self-lock or unlock with the frame (1) when the other end of the tilting frame (3) moves to the other end of the frame (1). The platform (1) is a rectangular hollow frame with horizontal rails (12) extending toward its two ends on both sides. The other two sides of the flipping frame (3) are horizontally connected to the two horizontal rails (12). The two horizontal tracks (12) are respectively provided with track grooves extending toward both ends on the side that are close to each other. The two sides of the other end of the flipping frame (3) are respectively rotatably equipped with bearings (311). The bearings (311) are respectively accommodated in the track grooves on the corresponding sides and can roll along the track grooves. The flipping frame (3) is a rectangular hollow frame with a connecting shaft (31) extending toward both sides at the other end. The bearings (311) are respectively installed at both ends of the connecting shaft (31). The telescopic drive device (4) is connected to the connecting shaft (31). The self-locking structure (5) includes a base (51) and ratchet teeth (52) and levers (53) connected to both ends of the base (51). The base (51) is fitted into the middle of the connecting shaft (31). The ratchet teeth (52) extend toward the other end of the platform (1), and the levers (53) extend toward one end of the platform (1). The middle area inside the platform (1) is provided with ratchet racks (55) extending horizontally toward both ends. The teeth of the ratchet racks (55) all extend upward at an angle toward one end of the platform (1). The ratchet teeth (52) are located above the ratchet racks (55). The telescopic drive device (4) is used to drive the other end of the tilting frame (3) toward the platform. One end of the frame (1) is translated, and during this process, the other end of the ratchet (52) hangs down under the action of gravity and passes through the teeth of the ratchet rack (55). When the telescopic drive device (4) drives the other end of the flipping frame (3) to translate toward the other end of the platform (1), the other end of the ratchet (52) falls into the tooth groove of the ratchet rack (55) and engages with each other to prevent the telescopic drive device (4) from retracting, thereby achieving self-locking. The lever (53) can be pressed down under the action of external force, thereby changing the center of gravity of the ratchet (52), the seat (51) and the lever (53), so that the ratchet (52) flips up and disengages from the tooth groove of the ratchet rack (55), thereby achieving unlocking.

2. The self-locking tilting mechanism based on the core components of a forage harvester according to claim 1, characterized in that: The other end of the platform (1) is rotatably mounted with a limiting plate (13) above the ratchet (55) via a bracket. The telescopic drive device (4) is used to drive the other end of the flipping frame (3) to move toward the other end of the platform (1). During the movement, the upper part of the unlocked ratchet (52) collides with the lower end of the limiting plate (13), so that the ratchet (52) flips back to its original position after the collision and falls onto the teeth of the ratchet (55).

3. The self-locking tilting mechanism based on the core components of a forage harvester according to claim 1, characterized in that: A connecting seat (312) that can rotate relative to the connecting shaft (31) is fitted on the connecting shaft (31), and the telescopic end of the telescopic drive device (4) is connected to the lower end of the connecting seat (312).

4. The self-locking tilting mechanism based on the core components of a forage harvester according to claim 1, characterized in that: A limiting block (121) is provided at one end of the track groove.

5. A self-locking tilting mechanism based on the core components of a forage harvester according to claim 1, characterized in that: The telescopic drive device (4) is a hydraulic cylinder.

6. A self-locking tilting mechanism based on the assembly of core components of a forage harvester according to any one of claims 1 to 5, characterized in that: Multiple climbing platforms (6) are respectively erected on the outer side of the other end of the platform (1) and on the upper part of the area between the other end of the platform (1) and the mounting support frame (11). The height of the upper end of the multiple climbing platforms (6) increases from one end of the platform (1) to the other end.

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