Grain unloading mechanism for a corn harvester

Abstract

The present application provides a kind of corn harvester unloading mechanism, the corn harvester unloading mechanism includes frame, moving frame, rotating frame, collection bin, turnover piece and drive assembly.The corn harvester unloading mechanism provided by the present application is provided with the moving frame with adjustable position on the frame and the rotating frame rotatingly arranged on the moving frame.In use, the position of the moving frame can be adjusted according to the position of the site transfer vehicle, so that the collection bin has enough rotating space, then the rotating frame is driven to rotate by the drive assembly, so that the dumping angle of the collection bin is located on one side of the transfer vehicle, and finally the collection bin is turned over by the turnover piece to realize the dumping of corn into the transfer vehicle.The transfer vehicle can complete the corn unloading operation according to the actual operation space on site, whether on one side or behind the corn harvester, convenient operation, effectively improves the operation efficiency of corn harvester.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery and equipment technology, and specifically relates to a grain unloading mechanism for a corn harvester. Background Technology

[0002] A corn harvester is an agricultural machine used to harvest corn stalks and collect the corn kernels. It has a collection bin for storing the corn, which is temporarily transported and stored during harvesting. Later, the corn is unloaded from the collection bin and transferred to a transport vehicle by tilting the bin. However, currently, the collection bins on corn harvesters can only tilt to one side of the harvester. In field operations, sometimes due to geographical limitations, the working space is restricted, making it impossible to accommodate both the corn harvester and the transport vehicle side-by-side. This necessitates repeated adjustments to the positions of the corn harvester and transport vehicle based on the available space, causing difficulties in field operations and reducing work efficiency. Summary of the Invention

[0003] This invention provides a corn harvester unloading mechanism, which aims to solve the problem that the unloading direction of existing corn harvester unloading mechanisms is relatively singular, affecting on-site unloading operations and reducing work efficiency.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a corn harvester unloading mechanism, comprising:

[0005] Frame;

[0006] A movable frame is mounted on the vehicle frame, and the position of the movable frame on the vehicle frame has a degree of freedom to be adjusted along the length of the vehicle frame;

[0007] A rotating frame is rotatably mounted on the movable frame;

[0008] The collection bin is hinged to the rotating frame on one side;

[0009] A tilting component is installed between the collection bin and the rotating frame. The driving end and the fixed end of the tilting component are respectively hinged to the rotating frame and the collection bin, and are used to push the collection bin to tilt for unloading grain.

[0010] A drive assembly is installed between the rotating frame and the vehicle frame to drive the rotating frame to rotate on the vehicle frame.

[0011] In one possible implementation, a pushing assembly is provided between the vehicle frame and the movable frame, the pushing assembly comprising:

[0012] The pusher has two support rods hinged to both its driving end and fixed end. The two support rods are respectively hinged to the vehicle frame and the moving frame.

[0013] In one possible implementation, a rotating shaft is fixedly mounted on the bottom of the rotating frame, the rotating shaft is rotatably mounted on the movable frame, and a limiting component for limiting the rotation of the rotating shaft is provided between the rotating shaft and the movable frame.

[0014] In one possible implementation, the limiting component includes:

[0015] An external gear ring is fixedly installed on the outside of the rotating shaft;

[0016] An internal toothed ring is slidably disposed on the rotating shaft along the axial direction of the rotating shaft. The frame is provided with a groove to prevent the internal toothed ring from rotating about the axis of the rotating shaft. The teeth inside the internal toothed ring can slide into the space between two teeth on the external toothed ring to limit the rotation of the external toothed ring.

[0017] A toggle assembly is disposed between the internal gear ring and the movable frame, and is used to toggle the internal gear ring to move up and down on the rotating shaft.

[0018] In one possible implementation, the teeth on the internal toothed ring are slidably disposed on the inner wall of the internal toothed ring along the radial direction of the internal toothed ring, and the internal toothed ring is provided with an elastic element for driving the teeth on the internal toothed ring to move out of the inner wall of the internal toothed ring, and the two ends of the teeth on the internal toothed ring are provided with chamfers.

[0019] In one possible implementation, the toggle component includes:

[0020] A first toothed plate, one end of which is hinged to the movable frame, is provided with two first pushing parts for moving the inner toothed ring, the two first pushing parts being located on the upper and lower sides of the inner toothed ring respectively;

[0021] A lever is fixedly connected to the first toothed plate, and the lever is set at an angle to the horizontal direction;

[0022] A drive wheel is rotatably mounted on the frame. When the movable frame moves on the frame, the lever can abut against the drive wheel to drive the lever to flip upward on the movable frame.

[0023] A spring-loaded component is installed between the internal toothed ring and the movable frame to drive the internal toothed ring to slide upward.

[0024] In one possible implementation, the toggle component further includes:

[0025] The second toothed plate is hinged to the first toothed plate on both sides of the inner toothed ring. The second toothed plate is provided with two second pushing parts for moving the inner toothed ring. The two second pushing parts are located on the upper and lower sides of the inner toothed ring, respectively.

[0026] A transmission assembly is disposed between the first toothed plate and the second toothed plate, and is used to drive the second toothed plate to swing synchronously when the first toothed plate swings.

[0027] In one possible implementation, the transmission assembly includes:

[0028] The connecting rod is hinged in the middle to the movable frame;

[0029] There are two transmission rods, one end of which is hinged to the first toothed plate and the second toothed plate respectively, and the other end of which is hinged to both ends of the connecting rod respectively.

[0030] In one possible implementation, a gear disk is fixedly mounted on the rotating shaft, and a column is fixedly connected between the gear disk and the rotating frame. A lifting sleeve is rotatably arranged inside the gear disk, and a groove that slides with the column is provided on the outer side of the lifting sleeve. A stop key is slidably arranged on the column along the radial direction of the column, and the stop key is used to limit the movement of the lifting sleeve in the vertical direction. A fixed shaft is fixedly mounted on the moving frame, and the fixed shaft is located inside the lifting sleeve. A guide rod is fixedly mounted on the outer side of the fixed shaft, and a spiral groove for accommodating the guide rod is provided on the outer side of the lifting sleeve.

[0031] In one possible implementation, the column is internally provided with a reciprocating assembly for driving the movement of the stop key, the reciprocating assembly comprising:

[0032] An elastic element is installed between the column and the stop key to push the stop key to move outward from the column;

[0033] A protruding plate is fixedly installed on one side of the key.

[0034] A toggle element is hinged in the middle inside the column. The toggle element includes two wing plates, one of which is located on the side of the convex plate away from the elastic element.

[0035] The reset component has its fixed end mounted on the gear disk and its driving end located inside the column. It is used to push another wing plate on the actuating component to rotate the actuating component.

[0036] The solution described in this application, compared with the prior art, involves installing a movable frame on the frame of the corn harvester. The movable frame is located at the rear of the frame, and its position on the frame is adjustable along the length of the frame. A rotating frame is rotatably mounted on top of the movable frame, and a collection bin is mounted on the rotating frame. One side of the collection bin is hinged to the rotating frame and rotates with the rotating frame. The tilting component is a hydraulic cylinder, and the axis of the hinge shaft of the tilting component on the collection bin and the rotating frame is parallel to the hinge shaft of the collection bin on the rotating frame. In use, the position of the movable frame can be adjusted according to the position of the transfer vehicle on site to give the collection bin sufficient rotation space. Then, the rotating frame is driven to rotate by the drive assembly, so that the tilting angle of the collection bin is on one side of the transfer vehicle. Finally, the tilting component drives the collection bin to tilt, thus tilting the corn into the transfer vehicle. The transfer vehicle can complete the corn unloading operation from either the side or the rear of the corn harvester, depending on the actual operating space on site. This is convenient to operate and effectively improves the working efficiency of the corn harvester. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the unloading mechanism of a corn harvester provided in an embodiment of the present invention;

[0038] Figure 2 A schematic diagram of the installation structure of the mobile frame provided in an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the structure of the toggle assembly provided in an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the connection structure between the internal toothed ring and the external toothed ring provided in an embodiment of the present invention;

[0041] Figure 5 for Figure 4 Enlarged view of part A in the middle;

[0042] Figure 6 A schematic diagram of the installation structure of the pushing component provided in an embodiment of the present invention;

[0043] Figure 7 A schematic diagram of the installation structure of the lifting sleeve provided in an embodiment of the present invention;

[0044] Figure 8 This is a schematic diagram of the installation structure of the reciprocating component provided in an embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Frame; 2. Moving frame; 3. Rotating frame; 31. Rotating shaft; 311. Gear disk; 312. Column; 313. Lifting sleeve; 32. Limiting assembly; 321. External gear ring; 322. Internal gear ring; 323. Actuating assembly; 3231. First gear plate; 3232. Actuating plate; 3233. Drive wheel; 3234. Springback component; 3235. Second gear plate; 3236. Connecting rod; 3237. Transmission rod; 324. Tooth; 325. Elastic component; 33. Stop key; 34. Fixed shaft; 341. Guide rod; 35. Reciprocating assembly; 351. Elastic component; 352. Protruding plate; 353. Actuating component; 354. Reset component; 4. Collection chamber; 5. Tilting component; 6. Drive assembly; 7. Push assembly; 71. Pushing component; 72. Support rod. Detailed Implementation

[0047] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0048] Please refer to the following: Figures 1 to 8 The unloading mechanism for a corn harvester provided by this invention will now be described. The unloading mechanism includes a frame 1, a movable frame 2, a rotating frame 3, a collection bin 4, a tilting component 5, and a drive assembly 6. The movable frame 2 is mounted on the frame 1, and its position on the frame 1 has a degree of freedom that can be adjusted along the length of the frame 1. The rotating frame 3 is rotatably mounted on the movable frame 2. The collection bin 4 is hinged to one side of the rotating frame 3. The tilting component 5 is installed between the collection bin 4 and the rotating frame 3, with its driving end and fixed end respectively hinged to the rotating frame 3 and the collection bin 4, for pushing the collection bin 4 to tilt for unloading. The drive assembly 6 is installed between the rotating frame 3 and the movable frame 2, for driving the rotating frame 3 to rotate on the movable frame 2.

[0049] Compared with the prior art, the corn harvester unloading mechanism provided in this embodiment features a movable frame 2 mounted on the corn harvester frame 1. The movable frame 2 is located at the rear of the frame 1, and its position on the frame 1 is adjustable along the length of the frame 1. A rotating frame 3 is rotatably mounted on top of the movable frame 2, and a collection bin 4 is mounted on the rotating frame 3. One side of the collection bin 4 is hinged to the rotating frame 3 and rotates with the rotating frame 3. The tilting component 5 is a hydraulic cylinder. The axis of the hinge shaft of the tilting component 5 on the collection bin 4 and the rotating frame 3 is parallel to the hinge shaft of the collection bin 4 on the rotating frame 3. In use, the position of the movable frame 2 can be adjusted according to the position of the transfer vehicle on site to give the collection bin 4 sufficient rotation space. Then, the rotating frame 3 is driven to rotate by the drive assembly 6 so that the tilting angle of the collection bin 4 is located on one side of the transfer vehicle. Finally, the tilting component 5 drives the collection bin 4 to tilt, thus tilting the corn into the transfer vehicle. The transfer vehicle can unload corn from either the side or the rear of the corn harvester, depending on the actual operating space on site. It is easy to operate and effectively improves the working efficiency of the corn harvester.

[0050] Preferably, in this embodiment, see Figure 1 , Figure 2 A guide plate is slidably installed on the material discharge side of the collection bin 4. Sliding parts, which slide upwards along two opposite sides of the collection bin 4, are fixedly connected to both sides of the guide plate. When the sliding parts slide a certain height, they can detach from the collection bin 4. A driving component is also hinged to the material discharge side of the collection bin 4, with its driving end hinged to the guide plate. A guide shaft is fixedly installed on the outside of the collection bin 4, perpendicular to the side wall of the collection bin 4. An elongated through groove is provided on the side wall of the guide plate, slidingly engaging with the guide shaft. When the driving component pushes the guide plate upwards, the sliding parts can detach from the side wall of the collection bin 4 and flip to the top of the collection bin 4. When unloading is required, the driving component retracts the guide plate, the guide plate flips, and gradually becomes parallel to the side wall of the collection bin 4, maintaining a sliding guide state between the sliding parts and the side wall of the collection bin 4. The guide plate can be extended as needed. During the harvesting process, the drive unit pushes the guide plate upward and flips it to the top of the collection chamber 4. The guide plate can prevent dust from overflowing.

[0051] In some embodiments, the aforementioned actuating component 7 may employ, for example... Figure 1 , Figure 6 The structure shown. See also... Figure 1 , Figure 6A pushing assembly 7 is provided between the frame 1 and the moving frame 2. The pushing assembly 7 includes a pushing member 71 and support rods 72. Two support rods 72 are hinged to both the driving and fixed ends of the pushing member 71, and the two support rods 72 are respectively hinged to the frame 1 and the moving frame 2. The pushing member 71 is a hydraulic cylinder, and two support rods 72 are hinged to both the fixed and driving ends of the pushing member 71. The two support rods 72 are hinged to each other and to the hydraulic cylinder. The other ends of the two support rods 72 are respectively hinged to the moving frame 2 and the frame 1. When the pushing member 71 opens, it increases the angle between the two hinged support rods 72, thereby pushing the moving frame 2 to move on the frame 1. When the pushing member 71 retracts, it decreases the angle between the two hinged support rods 72, thereby retracting the moving frame 2 and reducing the overall length of the corn harvester.

[0052] Specifically, in this embodiment, the hinge shafts at both ends of the four support rods 72 are arranged parallel to each other.

[0053] Preferably, in this embodiment, a limiting block for limiting the position of the movable frame 2 is fixedly installed at the rear of the frame 1. There are two limiting blocks, and the movable frame 2 is located between the two limiting blocks. The movable frame 2 can abut against the limiting blocks to limit the movement stroke of the movable frame 2.

[0054] In some embodiments, the aforementioned rotating frame 3 may be adopted as follows: Figure 3 , Figure 4 The structure shown. See also... Figure 3 , Figure 4 The limiting component 32 includes an outer toothed ring 321, an inner toothed ring 322, and a toggle component 323. The outer toothed ring 321 is fixedly installed on the outside of the rotating shaft 31; the inner toothed ring 322 is slidably disposed on the rotating shaft 31 along the axial direction of the rotating shaft 31, and the frame 1 is provided with a groove to prevent the inner toothed ring 322 from rotating around the axis of the rotating shaft 31, and the teeth 324 inside the inner toothed ring 322 can slide into the space between two teeth 324 on the outer toothed ring 321 to limit the rotation of the outer toothed ring 321; the toggle component 323 is disposed between the inner toothed ring 322 and the moving frame 2 to actuate the inner toothed ring 322 to move up and down on the rotating shaft 31. The outer toothed ring 321 has multiple outer teeth 324 arranged on its exterior, and the inner toothed ring 322 has an inner hole with multiple inner teeth 324 arranged on the inner wall of the inner hole. Multiple internal teeth 324 can slide into the gap between two adjacent external teeth and slide into contact with them. Thus, when the internal toothed ring 322 slides to the outside of the external toothed ring 321, the teeth 324 inside the internal toothed ring 322 slide into the gap between the teeth outside the external toothed ring 321, thereby limiting the rotation of the external toothed ring 321. This prevents the rotating frame 3 from rotating on the moving frame 2 and causing the collection chamber 4 to collide with other components under normal conditions.

[0055] Preferably, in this embodiment, the length direction of the slide groove on the frame 1 is set along the moving direction of the movable frame 2, thereby avoiding affecting the adjustment of the position of the movable frame 2 on the frame 1.

[0056] In some embodiments, the aforementioned internal gear ring 322 may be adopted as follows: Figure 3 , Figure 4 The structure shown. See also... Figure 3 , Figure 4 The teeth 324 on the internal gear ring 322 are slidably disposed on the inner wall of the internal gear ring 322 along the radial direction of the internal gear ring 322. An elastic element 325 is provided on the internal gear ring 322 to drive the teeth 324 on the internal gear ring 322 to move protruding from the inner wall of the internal gear ring 322. Chamfers are provided at both ends of the teeth 324 on the internal gear ring 322. The teeth 324 on the internal gear ring 322 are movably disposed on the inner wall of the internal gear ring 322, and the teeth 324 of the internal gear ring 322 can slide into the interior of the internal gear ring 322. Inclined chamfers are provided at both the upper and lower ends of the teeth 324 on the internal gear ring 322. In this embodiment, when the internal gear ring 322 moves upward, if the teeth 324 on the internal gear ring 322 and the external gear ring 321 interfere, the teeth 324 on the internal gear ring 322 will slide inward and avoid the teeth on the external gear ring 321, thus not affecting the upward movement of the internal gear ring 322. Simultaneously, when the internal gear ring 322 is located outside the external gear ring 321, the angle of the rotating shaft 31 can be finely adjusted. When the teeth 324 on the internal gear ring 322 are located between two teeth on the external gear ring 321, the force of the elastic element 325 can push out the teeth 324 on the internal gear ring 322 and limit them between two teeth 324 on the external gear ring 321. This effectively prevents the rotating shaft 31 from rotating.

[0057] Preferably, in this embodiment, the elastic element 325 is a spring.

[0058] In some embodiments, the toggle component 323 described above may employ, for example... Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3The actuating assembly 323 includes a first toothed plate 3231, a lever 3232, a drive wheel 3233, and a spring-loaded component 3234. One end of the first toothed plate 3231 is hinged to the movable frame 2. The first toothed plate 3231 is provided with two first pushing parts for moving the inner toothed ring 322. The two first pushing parts are located on the upper and lower sides of the inner toothed ring 322, respectively. The lever 3232 is fixedly connected to the first toothed plate 3231 and is set at an angle to the horizontal direction. The drive wheel 3233 is rotatably mounted on the frame 1. When the movable frame 2 moves on the frame 1, the lever 3232 can abut against the drive wheel 3233 to drive the lever 3232 to flip upward on the movable frame 2. The spring-loaded component 3234 is installed between the inner toothed ring 322 and the movable frame 2 to drive the inner toothed ring 322 to slide upward. The first toothed plate 3231 and the lever plate 3232 are integrally formed, and are arranged at an angle to each other. Two first pushing parts protrude from the end of the first toothed plate 3231 away from the lever plate 3232, and are spaced apart vertically. One side of the inner toothed ring 322 is located between the two first pushing parts. The two first pushing parts and the first toothed plate 3231 form a receiving groove for accommodating the side of the inner toothed ring 322. A clearance exists between the inner wall of the receiving groove and the inner toothed ring 322 to prevent the side of the inner toothed ring 322 from seizing with the two first pushing parts when the first toothed plate 3231 rotates. The lever plate 3232 is hinged to the first toothed plate 3231 on the movable frame 2. A sliding groove for the internal gear ring 322 is provided on the movable frame 2. A drive wheel 3233 is rotatably mounted at the end of the sliding groove. When the movable frame 2 moves towards the rear of the vehicle, the lever 3232 abuts against the drive wheel 3233 and flips upward through the guide of the drive wheel 3233, thereby enabling the first toothed plate 3231 to push the internal gear ring 322 downward and disengage it from the outer gear ring 321. When the movable frame 2 moves to the rear of the vehicle frame 1, the internal gear ring 322 automatically disengages from the outer gear ring 321. Then, activating the drive assembly 6 will drive the rotating frame 3 to rotate on the movable frame 2.

[0059] Specifically, in this embodiment, the spring-loaded member 3234 is a spring, and there are multiple spring-loaded members 3234 arranged around the outside of the rotating shaft 31. One end of each spring-loaded member abuts against the bottom of the inner gear ring 322, and the other end abuts against the movable frame 2. When the movable frame 2 moves towards the head of the frame 1, the lever 3232 disengages from the drive wheel 3233. Under the action of the spring-loaded members 3234, the inner gear ring 322 can be driven to move upward, thereby moving the inner gear ring 322 to the outside of the outer gear ring 321, achieving automatic locking.

[0060] The chamfers at both ends of the teeth 324 on the internal gear ring 322 guide the teeth 324 on the inner side of the internal gear ring 322 to move inward into the internal gear ring 322. This facilitates pushing the internal gear ring 322 upward.

[0061] In some embodiments, the toggle component 323 described above may employ, for example... Figure 2 , Figure 3 and Figure 4 The structure shown. See also... Figure 2 , Figure 3 and Figure 4 The actuating assembly 323 also includes a second toothed plate 3235 and a transmission assembly. The second toothed plate 3235 is hinged to the first toothed plate 3231 on both sides of the inner toothed ring 322. The second toothed plate 3235 has two second pushing parts for moving the inner toothed ring 322, located on the upper and lower sides of the inner toothed ring 322 respectively. The transmission assembly is located between the first toothed plate 3231 and the second toothed plate 3235, and is used to drive the second toothed plate 3235 to swing synchronously when the first toothed plate 3231 swings. The first toothed plate 3231 and the second toothed plate 3235 are located on opposite sides of the inner toothed ring 322. The first toothed plate 3231 and the second toothed plate 3235 rotate relative to each other, simultaneously pushing the inner toothed ring 322 upward or downward to ensure the smoothness of the inner toothed ring 322's movement.

[0062] Preferably, in this embodiment, a guide portion is provided at the bottom of the internal gear ring 322 and is slidably disposed on the outside of the rotating shaft 31, which further enhances the smoothness of the sliding of the internal gear ring 322.

[0063] Specifically, in this embodiment, the connection method between the second toothed plate 3235 and the second pushing part and the inner toothed ring 322 is the same as the connection method between the first toothed plate 3231 and the first pushing part and the inner toothed ring 322.

[0064] In some embodiments, the transmission assembly described above may employ, for example... Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3 The transmission assembly includes a connecting rod 3236 and a transmission rod 3237. The connecting rod 3236 is hinged to the movable frame 2 at its middle. There are two transmission rods 3237, one end of which is hinged to the first toothed plate 3231 and the second toothed plate 3235, respectively, and the other ends of which are hinged to the two ends of the connecting rod 3236, respectively. The connecting rod 3236 is located between the first toothed plate 3231 and the second toothed plate 3235. The middle of the connecting rod 3236 is hinged to the movable frame 2, and the two transmission rods 3237 are hinged to the two ends of the connecting rod 3236, respectively. When the first toothed plate 3231 swings on the movable frame 2, it can drive the connecting rod 3236 to rotate on the movable frame 2 through the transmission rod 3237, and then drive the second toothed plate 3235 to swing synchronously through the other transmission rod 3237.

[0065] Preferably, in this embodiment, actuating components 323 are provided on both sides of the movable frame 2, and the two first toothed plates 3231 on the two sets of actuating components 323 share the same rotating shaft 31; the two second toothed plates 3235 on the two sets of actuating components 323 share the same rotating shaft 31. Both sets of actuating components 323 include a transmission component.

[0066] Specifically, in this embodiment, the first toothed plate 3231 and the lever plate 3232 are hinged together, and are located on both sides of the hinge axis of the first toothed plate 3231 on the moving frame 2 along the moving direction of the moving frame 2.

[0067] In some embodiments, the aforementioned rotating shaft 31 may be as follows: Figure 3 , Figure 7 The structure shown. See also... Figure 3 , Figure 7 A gear disk 311 is fixedly mounted on the rotating shaft 31. A column 312 is fixedly connected between the gear disk 311 and the rotating frame 3. A lifting sleeve 313 is rotatably mounted inside the gear disk 311. A limiting groove that slides with the column 312 is provided on the outer side of the lifting sleeve 313. A stop key 33 is slidably mounted on the column 312 along the radial direction of the column 312. The stop key 33 is used to limit the vertical movement of the lifting sleeve 313. A fixed shaft 34 is fixedly mounted on the moving frame 2. The fixed shaft 34 is located inside the lifting sleeve 313, and a guide rod 341 is fixedly mounted on the outer side of the fixed shaft 34. A spiral groove for accommodating the guide rod 341 is provided on the outer side of the lifting sleeve 313. The gear disk 311 is fitted onto the outer side of the rotating shaft 31. The two ends of the column 312 are fixedly connected to the upper end face of the gear disk 311 and the lower end face of the rotating frame 3, respectively, so that when the gear disk 311 rotates, it can drive the rotating frame 3 to rotate synchronously. The lifting sleeve 313 is located between the fixed shaft 34 and the gear disk 311 and is rotatably mounted on the outside of the fixed shaft 34. An annular disk protrudes from the top of the lifting sleeve 313, and a limiting groove corresponding to the number of columns 312 is provided on the outer side of the annular disk. The columns 312 slide against the inner wall of the limiting groove. A stop key 33 is movably mounted on the side of the column 312 near the inner wall of the limiting groove. The two ends of the stop key 33 form locking gaps with the gear disk 311 and the rotating frame 3, respectively, for locking the annular disk on the lifting sleeve 313. Thus, when the annular disk moves to the locking gap, the stop key 33 pops out from inside the column 312 and limits the annular disk within the locking gap. When the gear disk 311 rotates at a certain angle, the lifting sleeve 313 rotates synchronously relative to the fixed shaft 34. Guided by the spiral groove and the guide rod 341, the lifting sleeve 313 can move up and down. When the annular disk on the lifting sleeve 313 moves to the position of the limit groove, the stop key 33 can pop out from inside the column 312, so that the lifting sleeve 313 can no longer move up and down, thus realizing the function of positioning the rotation angle of the gear disk 311.

[0068] Specifically, in this embodiment, the rotating shaft 31, the lifting sleeve 313, and the gear disk 311 are all coaxially arranged.

[0069] Specifically, in this embodiment, the driving component 6 is a motor and a gear that is connected to the driving end of the motor. The gear and the gear disk 311 are meshed with each other, thereby driving the gear disk 311 to rotate.

[0070] Optionally, in this embodiment, the drive component 6 is a hydraulic cylinder. The drive end and the fixed end of the hydraulic cylinder are respectively hinged to the movable frame 2 and the gear disk 311, thereby driving the gear disk 311 to rotate and achieving positioning through the lifting sleeve 313. The design of the lifting sleeve 313 and the column 312 can be adapted to different driving methods.

[0071] Specifically, in this embodiment, an arc-shaped guide rail centered on the axis of the gear disk 311 is provided on the top of the frame 1. A support guide rail that slides with the arc-shaped guide rail is provided at the bottom of the rotating frame 3. The arc-shaped guide rail and the support guide rail can support the collection bin 4 when unloading grain.

[0072] In some embodiments, the aforementioned column 312 may be adopted as follows: Figure 7 , Figure 8 The structure shown. See also... Figure 7 , Figure 8The column 312 is internally equipped with a reciprocating assembly 35 for driving the movement of the stop key 33. The reciprocating assembly 35 includes a spring element 351, a convex plate 352, a toggle element 353, and a reset element 354. The spring element 351 is installed between the column 312 and the stop key 33 to push the stop key 33 to move outward from the column 312. The convex plate 352 is fixedly installed on one side of the stop key 33. The toggle element 353 is hinged in the middle inside the column 312 and includes two wing plates, one of which is located on the side of the convex plate 352 away from the spring element 351. The reset element 354 is fixedly installed on the gear disk 311 and driven inside the column 312 to push the other wing plate on the toggle element 353 to rotate the toggle element 353. A guide sleeve is fixedly installed on the inner side of the stop key 33. A guide post that slides with the guide sleeve is fixedly installed on the inner wall of the column 312. A convex plate 352 is fixedly installed on the outer side of the guide sleeve. The elastic element 351 is a spring, which is fitted on the outer side of the guide post, and its two ends abut against the convex plate 352 and the inner wall of the column 312, respectively. The elastic element 325 ensures that the stop key 33 always has an outward moving force. When the annular disc on the lifting sleeve 313 moves to the limiting groove, the stop key 33 disengages from the annular disc and slides out from inside the column 312, thus achieving the limiting function. The reset element 354 is a hydraulic cylinder or a pneumatic cylinder. The fixed end of the reset element 354 is installed at the bottom end of the column 312, and the driving end of the reset element 354 is located inside the column 312 and can abut against one side wing plate of the actuating element 353, driving the actuating element 353 to rotate inside the column 312. At the same time, the other wing plate moves the protruding plate 352 to retract the stop key 33, and the lifting sleeve 313 can continue to move in the vertical direction to complete the adjustment of the angle of the rotating frame 3.

[0073] Specifically, in this embodiment, the two wing plates on the toggle member 353 are arranged at an angle, and the two wing plates are located on the same side of the hinge axis of the toggle member 353 on the column 312 along the sliding direction of the stop key 33.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A corn harvester unloading mechanism, characterized in that, include: Frame (1); A movable frame (2) is mounted on the frame (1), and the position of the movable frame (2) on the frame (1) has a degree of freedom to be adjusted along the length direction of the frame (1); Rotating frame (3) is rotatably mounted on the movable frame (2); The collection bin (4) is hinged on one side to the rotating frame (3); A flipping component (5) is installed between the collection bin (4) and the rotating frame (3). The driving end and the fixed end of the flipping component (5) are respectively hinged to the rotating frame (3) and the collection bin (4) to push the collection bin (4) to flip and perform grain unloading operation. A drive assembly (6) is installed between the rotating frame (3) and the movable frame (2) for driving the rotating frame (3) to rotate on the movable frame (2); A rotating shaft (31) is fixedly installed at the bottom of the rotating frame (3). The rotating shaft (31) is rotatably mounted on the movable frame (2). A limiting component (32) for limiting the rotation of the rotating shaft (31) is provided between the rotating shaft (31) and the movable frame (2). The limiting component (32) includes: An external toothed ring (321) is fixedly installed on the outside of the rotating shaft (31); An internal toothed ring (322) is slidably disposed on the rotating shaft (31) along the axial direction of the rotating shaft (31). The frame (1) is provided with a groove for preventing the internal toothed ring (322) from rotating about the axis of the rotating shaft (31). The teeth (324) inside the internal toothed ring (322) can slide into the space between two teeth on the external toothed ring (321) to limit the rotation of the external toothed ring (321). A toggle assembly (323) is disposed between the internal toothed ring (322) and the movable frame (2) for toggle the internal toothed ring (322) to move up and down on the rotating shaft (31); A pushing assembly (7) is provided between the vehicle frame (1) and the movable frame (2), the pushing assembly (7) comprising: The pusher (71) has two support rods (72) hinged to both its driving end and fixed end. The two support rods (72) are respectively hinged to the frame (1) and the moving frame (2). The toggle assembly (323) includes: The first toothed plate (3231) is hinged at one end to the movable frame (2). The first toothed plate (3231) is provided with two first pushing parts for moving the inner toothed ring (322). The two first pushing parts are located on the upper and lower sides of the inner toothed ring (322), respectively. A lever (3232) is fixedly connected to the first toothed plate (3231), and the lever (3232) is set at an angle to the horizontal direction; The drive wheel (3233) is rotatably mounted on the frame (1). When the movable frame (2) moves on the frame (1), the lever (3232) can abut against the drive wheel (3233) to drive the lever (3232) to flip upward on the movable frame (2). A spring-loaded component (3234) is installed between the internal toothed ring (322) and the movable frame (2) to drive the internal toothed ring (322) to slide upward.

2. The unloading mechanism of the corn harvester as described in claim 1, characterized in that, The teeth (324) on the internal toothed ring (322) are slidably disposed on the inner wall of the internal toothed ring (322) along the radial direction of the internal toothed ring (322), and the internal toothed ring (322) is provided with an elastic element (325) for driving the teeth (324) on the internal toothed ring (322) to move protruding from the inner wall of the internal toothed ring (322), and the two ends of the teeth (324) on the internal toothed ring (322) are provided with chamfers.

3. The unloading mechanism of the corn harvester as described in claim 1, characterized in that, The toggle assembly (323) also includes: The second toothed plate (3235) is hinged to the first toothed plate (3231) on both sides of the inner toothed ring (322). The second toothed plate (3235) is provided with two second pushing parts for moving the inner toothed ring (322). The two second pushing parts are located on the upper and lower sides of the inner toothed ring (322), respectively. A transmission assembly is disposed between the first toothed plate (3231) and the second toothed plate (3235) for driving the second toothed plate (3235) to swing synchronously when the first toothed plate (3231) swings.

4. The unloading mechanism of the corn harvester as described in claim 3, characterized in that, The transmission assembly includes: The connecting rod (3236) is hinged in the middle to the movable frame (2); There are two transmission rods (3237). One end of each transmission rod (3237) is hinged to the first toothed plate (3231) and the second toothed plate (3235), respectively. The other end of each transmission rod (3237) is hinged to both ends of the connecting rod (3236).

5. The unloading mechanism of the corn harvester as described in claim 1, characterized in that, A gear disk (311) is fixedly installed on the rotating shaft (31). A column (312) is fixedly connected between the gear disk (311) and the rotating frame (3). A lifting sleeve (313) is rotatably arranged inside the gear disk (311). A slot that slides with the column (312) is provided on the outer side of the lifting sleeve (313). A stop key (33) is slidably arranged on the column (312) along the radial direction of the column (312). The stop key (33) is used to limit the movement of the lifting sleeve (313) in the vertical direction. A fixed shaft (34) is fixedly installed on the moving frame (2). The fixed shaft (34) is located inside the lifting sleeve (313). A guide rod (341) is fixedly installed on the outer side of the fixed shaft (34). A spiral groove for accommodating the guide rod (341) is provided on the outer side of the lifting sleeve (313).

6. The unloading mechanism of the corn harvester as described in claim 5, characterized in that, The column (312) is internally provided with a reciprocating assembly (35) for driving the key (33) to move, the reciprocating assembly (35) comprising: An elastic element (351) is installed between the column (312) and the stop key (33) for pushing the stop key (33) to move outward from the column (312); A protruding plate (352) is fixedly installed on one side of the key (33); A toggle member (353) is hinged in the middle inside the column (312). The toggle member (353) includes two wing plates, one of which is located on the side of the protrusion plate (352) away from the elastic member (351). The reset member (354) has its fixed end mounted on the gear disk (311) and its driving end located inside the column (312), and is used to push another wing plate on the toggle member (353) to rotate the toggle member (353).

Images