Harvester bin lifter

Abstract

The application provides a harvester grain bin lifting device, comprising: a loading and unloading hopper; a supporting mechanism, the bottom of which is mounted on a harvester; a heightening mechanism, which is slidingly connected with the supporting mechanism through a lifting driving element and is rotationally connected with the loading and unloading hopper; a turnover driving element, the fixed end of which is connected with the heightening mechanism and the telescopic end of which is connected with the side wall of the loading and unloading hopper to push the loading and unloading hopper to turn over towards a unloading area. The harvester grain bin lifting device can freely adjust the unloading point height according to different grain transport vehicle heights, avoids grain spilling or impact on the vehicle, has high flexibility, improves work efficiency, ensures the stability of cooperation between the heightening mechanism and the supporting mechanism, and effectively avoids shaking of the heightening mechanism during lifting.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a grain bin lifting device for a harvester. Background Technology

[0002] In corn harvesting operations, the loading and unloading bucket serves to load the harvested corn ears. Once full, it needs to be unloaded. However, traditional loading and unloading buckets, limited by a fixed unloading height, cannot accommodate grain trucks of varying heights, often leading to grain spillage or failure to unload into the truck bed. Therefore, traditional loading and unloading buckets are insufficient to meet the operational requirements of various grain trucks. Furthermore, existing grain bin lifting devices suffer from unstable pipe fitting clearances. When the loading and unloading bucket is full, its weight is considerable (up to several tons), causing vibrations during lifting, affecting structural strength and overall lifespan. Utility Model Content

[0003] The technical problem this utility model aims to solve is to address the shortcomings of the existing technology by providing a grain bin lifting device for a harvester. The technical solution adopted by this utility model is:

[0004] A grain bin lifting device for a harvester, comprising:

[0005] Loading and unloading buckets;

[0006] The support mechanism is installed on the harvester;

[0007] The escalation mechanism is slidably connected to the support mechanism, and the loading and unloading bucket is rotatably connected to the escalation mechanism;

[0008] Multiple lifting drive components are all mounted on the support mechanism, and the lifting ends are all connected to the scaffolding mechanism;

[0009] Multiple tilting drive components are rotatably connected to the lifting mechanism, and their telescopic ends are all connected to the loading and unloading bucket to push the loading and unloading bucket to tilt toward the unloading area.

[0010] In some embodiments of this application, the support mechanism includes two opposing support arms, with slide rails formed on the inner sides of the support arms. The escalation mechanism includes two escalation arms, each extending into a slide rail on the same side and slidingly engaging with the slide rail.

[0011] Each support arm is connected to a corresponding lifting drive component; the bottom end of each lifting drive component is connected to the bottom of the support arm on the same side, and its lifting end is connected to the top of the scaffold arm on the same side.

[0012] In some embodiments of this application, each support arm has an upper roller on its top front wall and a lower roller on its bottom rear wall; the upper roller rolls with the support arm and the lower roller rolls within the slide.

[0013] In some embodiments of this application, a limit block is installed on the side of each boom facing the loading / unloading bucket.

[0014] In some embodiments of this application, each support arm is provided with a gap friction block on its side wall. One side of the gap friction block is connected to the support arm through a connecting plate, and the other side is in contact with the scaffold arm. The gap friction block is provided with multiple oil injection holes that communicate with the slide rail.

[0015] In some embodiments of this application, each boom is hinged with a tilting drive, and the tilting drive is located on both sides of the loading and unloading bucket. The telescopic end of each tilting drive is connected to the side wall of the loading and unloading bucket on the same side.

[0016] In some embodiments of this application, the scaffolding mechanism further includes two spaced-apart crossbeams and an X-shaped reinforcing frame disposed between the two crossbeams; the two ends of the crossbeams are respectively connected to the scaffolding arm on the same side, and the top and bottom ends of the X-shaped reinforcing frame are respectively connected to the crossbeam on the same side.

[0017] In some embodiments of this application, each support arm is provided with an inclined support column on the side facing the loading and unloading hopper, with the top end of the support column connected to the support arm and the bottom end connected to the harvester.

[0018] In some embodiments of this application, the lifting drive and the tilting drive are hydraulic cylinders or electric cylinders.

[0019] This utility model has the following beneficial effects: the grain bin lifting device of the harvester can freely adjust the height of the unloading point according to different grain transport vehicle heights, avoiding grain spillage or impact on the vehicle, with high flexibility and improved operation efficiency; it ensures the stability of the cooperation between the lifting mechanism and the support mechanism, and effectively avoids shaking during the lifting process of the lifting mechanism. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the harvester grain bin lifting device in a non-working state, provided in an embodiment of this application.

[0021] Figure 2 for Figure 1 A schematic diagram of the structure without a loading / unloading hopper;

[0022] Figure 3 A schematic diagram of the first angle of the working state of the harvester grain bin lifting device provided in the embodiment of this application;

[0023] Figure 4 A schematic diagram of the second angle of the working state of the harvester grain bin lifting device provided in the embodiments of this application;

[0024] Figure 5 A schematic diagram of the structure of the elevated mechanism 2 in its extended state at the first angle;

[0025] Figure 6 This is a schematic diagram of the second angle of the extended state of the scaffolding mechanism 2;

[0026] Figure 7 for Figure 5 Exploded view;

[0027] Figure 8 A schematic diagram of the structure of the gap friction block provided in an embodiment of this application;

[0028] Figure 9 for Figure 6 Enlarged view of point A in the middle.

[0029] Figure label:

[0030] 100-Loading bucket;

[0031] 1-Support mechanism; 11-Support arm; 111-Slide rail; 12-Support column;

[0032] 2-Elevation mechanism; 21-Elevation arm; 22-Limiting block; 23-Crossbeam; 24-X-shaped reinforcement frame;

[0033] 3- Lifting drive components;

[0034] 4- Flip drive component;

[0035] 51 - Upper roller; 52 - Lower roller;

[0036] 6- Gap friction block; 61- Oil injection hole; 62- Connecting plate; 63- Oil reservoir. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0038] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0039] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 1 This is a schematic diagram of the harvester grain bin lifting device in a non-operating state, as provided in an embodiment of this application. Figure 2 for Figure 1 A structural diagram of the 100-type configuration without a loading / unloading bucket. Figure 3 This is a structural schematic diagram of the harvester grain bin lifting device provided in the embodiments of this application, showing its working state from a first angle. Figure 4 A schematic diagram of the second angle of the working state of the harvester grain bin lifting device provided in the embodiments of this application; Figure 5 This is a structural diagram showing the first angle of the extended state of the scaffolding mechanism 2. Figure 6 This is a structural schematic diagram showing the second angle of the extended state of the lifting mechanism 2. This application embodiment provides a harvester grain bin lifting device, which includes: a loading / unloading bucket 100, a support mechanism 1, a lifting mechanism 2, multiple lifting drive components 3, and multiple tilting drive components 4.

[0040] The support mechanism 1 is installed on the corn harvester, the lifting mechanism 2 is slidably connected to the support mechanism 1, and the loading and unloading bucket 100 is rotatably connected to the lifting mechanism 2.

[0041] Multiple lifting drive components 3 are mounted on the support mechanism 1, and the lifting ends are all connected to the scaffolding mechanism 2.

[0042] Multiple tilting drive components 4 are rotatably connected to the lifting mechanism 2, and their telescopic ends are all connected to the loading and unloading bucket 100 to push the loading and unloading bucket 100 to tilt toward the unloading area. Specifically, each of the lifting arms 21 is hinged with a tilting drive component 4, and the tilting drive components 4 are located on both sides of the loading and unloading bucket 100. The telescopic end of each tilting drive component 4 is connected to the side wall of the loading and unloading bucket 100 on the same side.

[0043] In some examples, both the support mechanism 1 and the lifting mechanism 2 can be tilted. The tilt of the lifting mechanism 2 extends the horizontal distance from its center of gravity to the support point, so that the weight of the lifting mechanism 2 and the loading bucket 100 generates a stabilizing torque to resist forward tilting, thus preventing the lifting mechanism 2 from shaking during the lifting process.

[0044] The lifting mechanism 2 is connected to the loading and unloading bucket 100 through the flipping drive 4. The fixed end of the flipping drive 4 is connected to the lifting mechanism 2, and the telescopic end is connected to the side wall of the loading and unloading bucket 100. The flipping drive 4 can push the loading and unloading bucket 100 to flip towards the unloading area by extending the telescopic end.

[0045] In some examples, both the lifting drive 3 and the tilting drive 4 can be hydraulic cylinders or electric cylinders. Hydraulic cylinders or electric cylinders have the characteristics of simple structure and easy installation. Furthermore, the lifting mechanism 2 can be lifted and lowered by the piston rod of the lifting drive 3, and the loading and unloading bucket 100 can be tilted toward the unloading area by the piston rod of the tilting drive 4.

[0046] In this embodiment, the lifting drive 3 extends, pushing the entire lifting mechanism 2 to slide upward along the support mechanism 1, thereby raising the loading and unloading bucket 100, which is rotatably connected to the lifting mechanism 2, to a suitable height. When the loading and unloading bucket 100 is raised to the target height (e.g., the same height as the grain truck bed), the tilting drive 4 starts to work. The piston rod of the tilting drive 4 pushes the loading and unloading bucket 100 to rotate around the hinge point with the lifting mechanism, achieving precise tilting and dumping of grain to the unloading area.

[0047] In this way, the grain bin lifting device of the harvester can freely adjust the height of the unloading point according to the different heights of the grain transport vehicles, avoiding grain spillage or impact on the vehicles, and is highly flexible; through the sequential control of the lifting drive component 3 and the tilting drive component 4, the labor intensity of the driver is reduced, and the degree of automation is high; the structure is simple and easy to operate.

[0048] Please see Figure 7 , Figure 7 for Figure 5 The exploded view shows that in some embodiments, the support mechanism 1 includes two opposing support arms 11, with a slide rail 111 provided on the inner side of each support arm 11. The escalation mechanism 2 includes two escalation arms 21, which extend into the slide rail 111 on the same side and slide in cooperation with the slide rail 111.

[0049] Each support arm 11 is connected to a corresponding lifting drive component 3. The bottom end of each lifting drive component 3 is connected to the bottom of the support arm 11 on the same side, and its lifting end is connected to the top end of the scaffold arm 21 on the same side.

[0050] In this way, the smoothness of the lifting mechanism 2 is ensured by the guide rail 111, the shaking of the loading and unloading bucket 100 is reduced, and the safety of operation is improved; in addition, the structure of the double support arm 11 and the double frame arm 21 forms a stable frame, which effectively ensures the load capacity of the loading and unloading bucket 100.

[0051] Furthermore, in addition to the two scaffolding arms 21, the scaffolding mechanism 2 may also include two spaced-apart crossbeams 23 and an X-shaped reinforcing frame 24 located between the two crossbeams. The two ends of the crossbeams 23 are respectively connected to the scaffolding arms 21 on the same side, and the top and bottom ends of the X-shaped reinforcing frame 24 are respectively connected to the crossbeams 23 on the same side.

[0052] In this way, the two crossbeams 23 connect the two scaffold arms 21 on the left and right sides into an integral frame, avoiding the independent movement of the two scaffold arms 21 and ensuring the synchronicity of the operation of the scaffold arms 21; the X-shaped reinforcing frame 24 is a truss structure, which uses the stability of triangles to transform the frame structure into a stable truss structure, which can effectively resist torsional forces from all directions and improve the load-bearing capacity of the scaffold mechanism 2; it also enhances the overall rigidity and stability of the scaffold mechanism 2 and prevents the scaffold mechanism 2 from deforming.

[0053] In some examples, each support arm 11 has an inclined support column 12 on the side facing the loading and unloading hopper 100. The top end of the support column 12 is connected to the support arm 11, and the bottom end is connected to the harvester. In this way, the support column 12, the support arm 11, and the harvester form a stable triangular structure, which helps to ensure the structural stability of the support mechanism 1 and improve the load-bearing capacity of the support mechanism 1.

[0054] Please continue reading. Figure 7 In some embodiments, the loading and unloading bucket 100 is located on the front side of the lifting mechanism 2. Since the loading and unloading bucket 100 has a certain weight, it will exert a force on the lifting mechanism 2 to tilt forward, thereby causing the upper part of the front side of the lifting arm 21 to abut against the top of the support arm 11, and the lower part of the rear side of the lifting arm 21 to abut against the rear wall of the slide 111. Based on this, in order to ensure the smooth movement of the lifting arm 21, an upper roller 51 is provided on the front wall of the top of each support arm 11, and a lower roller 52 is provided on the rear wall of the bottom of each lifting arm 21. The upper roller 51 rolls with the lifting arm 21, and the lower roller 52 rolls in the slide 111.

[0055] The upper roller 51 is positioned at the top of the support arm 11 and contacts the outer wall of the scaffold arm 21. When the scaffold arm 21 is raised or lowered, the upper roller 51 rolls accordingly, avoiding direct hard friction between the scaffold arm 21 and the top of the support arm 11. The lower roller 52 is positioned at the bottom of the scaffold arm 21 and rolls within the slide rail 111, replacing the direct sliding between the bottom of the scaffold arm 21 and the inner wall of the slide rail 111.

[0056] In some examples, both the upper roller 51 and the lower roller 52 can be made of nylon.

[0057] In this way, by setting the upper roller 51 and the lower roller 52 at the upper and lower positions, the sliding friction is transformed into rolling friction, which reduces the frictional resistance and wear between the lifting arm 21 and the support arm 11 during the lifting process, and improves the service life and reliability of the lifting device; the rolling friction makes the lifting action smoother and more stable, reducing jamming; it also reduces the driving power of the driving lifting component 3, reduces energy consumption, and improves work efficiency.

[0058] In some embodiments, each boom 21 is equipped with a limiting block 22 on the side facing the loading / unloading bucket 100. This way, at the end of the unloading operation, the tilting drive 4 begins to retract, and the loading / unloading bucket 100 falls downwards around the hinge point under gravity. The limiting block 22 provides a mechanical endpoint for the falling of the loading / unloading bucket 100 and provides a margin for the retraction of the piston rod of the tilting drive 4, preventing the piston rod of the tilting drive 4 from overtraveling and preventing the telescopic end of the tilting drive 4 from continuously retracting to its mechanical structural limit position (i.e., the piston rod completely retracted to the bottom of the cylinder). This protects the seals, piston rod, and other components inside the tilting drive 4. Furthermore, by setting the limiting block 22, the loading / unloading bucket 100 is securely supported before the piston rod of the tilting drive 4 reaches its dangerous stroke, ensuring that the tilting drive 4 operates within a safe pressure and stroke range.

[0059] In some examples, the limiting block 22 can be a rubber block. Rubber materials have the characteristics of high elasticity, strong wear resistance, and good damping performance, which can effectively absorb the impact of the loading and unloading bucket 100 on the lifting mechanism 2; and the elastic deformation of the limiting block 22 itself naturally absorbs the impact energy at the end of the falling end of the loading and unloading bucket 100, achieving a gentle stop and avoiding noise and structural damage caused by hard metal impact.

[0060] Please see Figure 8 and Figure 9 , Figure 8 A schematic diagram of the structure of the gap friction block 6 provided in an embodiment of this application. Figure 9 for Figure 6 Enlarged view at point A. In some embodiments, each support arm 11 is provided with a gap friction block 6, which is respectively installed on the left side of the left scaffold arm 21 and the right side of the right scaffold arm 21. One side of the gap friction block 6 is connected to the support arm 11 through a connecting plate 62, and the other side is in contact with the outer wall of the scaffold arm 21. In this way, by placing the gap friction block 6 between the support arm 11 and the scaffold arm 21, a pair of "friction pairs" is formed with the surface of the scaffold arm 21, which can prevent the left side of the left scaffold arm 21 and the right side of the right scaffold arm 21 from rubbing against the slide rail 111, thereby protecting the scaffold arm 21 and the support arm 11, avoiding hard friction between them, and extending their service life.

[0061] The gap friction block 6 is mounted on the support arm 11 via the connecting plate 62 and is a replaceable module. When wear causes the gap to increase, a thicker gap friction block 6 can be replaced to compensate for the gap, restore the tight fit between the gantry arm 21 and the slide rail 111, eliminate wobbling, and ensure smooth sliding.

[0062] Furthermore, the gap friction block 6 is provided with multiple oil injection holes 61 that communicate with the slide rail 111. In this way, by providing multiple oil injection holes 61 on the gap friction block 6, with the holes directly connecting to the friction contact surface within the slide rail 111, lubricating oil can be added directly and evenly through the oil injection holes 61 during maintenance. The grease can then directly and evenly wet the contact surface between the gap friction block 6 and the lifting arm 21, forming an oil film. This greatly reduces frictional resistance and wear, ensuring smooth lifting and lowering operations.

[0063] In some examples, an oil reservoir 63 can also be provided on the gap friction block 6. Lubricating oil flows through the oil injection hole 61 to the side of the gap friction block 6 that contacts the support arm 21. Since grease is fluid, some of the lubricating oil will flow into the oil reservoir to store the lubricating oil and avoid wasting the lubricating oil.

[0064] In some examples, the gap friction block 6 is made of nylon. Nylon itself has a low coefficient of friction and certain self-lubricating properties, and lubricating oil can adhere to its surface and function. If lubrication is not timely, nylon can, to a certain extent, ensure the smooth sliding of the boom 21, avoiding dry friction between metals. Furthermore, nylon is tough and wear-resistant, reducing replacement costs. In addition, nylon has excellent toughness and shock absorption properties, which can absorb minor vibrations and impacts during equipment operation. At the same time, the collision noise between nylon and metal is much lower than that between metals, helping to reduce the overall operating noise of the machine.

[0065] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A grain bin lifting device for a harvester, characterized in that, include: Loading / unloading bucket (100); Support mechanism (1), which is installed on the harvester; The lifting mechanism (2) is slidably connected to the support mechanism (1); and the loading and unloading bucket (100) is rotatably connected to the lifting mechanism (2); Multiple lifting drive components (3) are all mounted on the support mechanism (1), and the lifting ends are all connected to the scaffolding mechanism (2); Multiple flipping drive components (4) are rotatably connected to the lifting mechanism (2), and their telescopic ends are all connected to the loading and unloading bucket (100) to push the loading and unloading bucket (100) to flip toward the unloading area.

2. The harvester grain bin lifting device according to claim 1, characterized in that, The support mechanism (1) includes two opposing support arms (11), and a slide rail (111) is provided on the inner side of the support arm (11); the escalation mechanism (2) includes two escalation arms (21), and the escalation arms (21) extend into the slide rail (111) on the same side and slide in cooperation with the slide rail (111); Each of the support arms (11) is connected to a corresponding lifting drive (3); the bottom end of each lifting drive (3) is connected to the bottom of the support arm (11) on the same side, and its lifting end is connected to the top end of the scaffold arm (21) on the same side.

3. The harvester grain bin lifting device according to claim 2, characterized in that, Each of the support arms (11) is provided with an upper roller (51) on the front wall at the top end; each of the scaffolding arms (21) is provided with a lower roller (52) on the rear wall at the bottom end; The upper roller rolls in cooperation with the overhead arm (21), and the lower roller (52) rolls within the slide rail (111).

4. The harvester grain bin lifting device according to claim 2, characterized in that, Each of the booms (21) is equipped with a limit block (22) on the side facing the loading bucket (100).

5. The harvester grain bin lifting device according to claim 2, characterized in that, Each of the support arms (11) has a gap friction block (6) on its side wall. One side of the gap friction block (6) is connected to the support arm (11) through a connecting plate (62), and the other side is in contact with the scaffold arm (21). The gap friction block (6) has multiple oil injection holes (61) that communicate with the slide rail (111), and the gap friction block (6) has an oil storage groove (63) with an opening facing the scaffold arm (21).

6. The harvester grain bin lifting device according to claim 2, characterized in that, Each of the above-mounted booms (21) is hinged with a tilting drive (4), and the tilting drive (4) is located on both sides of the loading and unloading bucket (100). The telescopic end of each tilting drive (4) is connected to the side wall of the loading and unloading bucket (100) on the same side.

7. The harvester grain bin lifting device according to claim 2, characterized in that, The scaffolding mechanism (2) also includes two spaced-apart crossbeams (23) and an X-shaped reinforcing frame (24) located between the two crossbeams; the two ends of the crossbeams (23) are respectively connected to the scaffolding arm (21) on the same side, and the top and bottom ends of the X-shaped reinforcing frame (24) are respectively connected to the crossbeams (23) on the same side.

8. The harvester grain bin lifting device according to claim 2, characterized in that, Each of the support arms (11) is provided with an inclined support column (12) on the side facing the loading and unloading bucket (100). The top end of the support column (12) is connected to the support arm (11), and the bottom end is connected to the harvester.

9. The harvester grain bin lifting device according to claim 1, characterized in that, The lifting drive (3) and the tilting drive (4) are hydraulic cylinders or electric cylinders.

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