Grain lifting device and harvester

Abstract

The utility model relates to a grain lifting device and a harvester, and relates to the field of grain lifting devices, an output shaft of a lifting gear box is fixedly provided with a combined lower joint, a grain lifting barrel comprises a grain lifting auger and a grain lifting barrel body, one end of the grain lifting barrel body is hinged with a grain lifting device end head assembly, and one end of the grain lifting auger is fixedly provided with a combined upper joint; the other end of the grain lifting auger is rotationally connected with the other end of the grain lifting barrel; the combination upper connector is provided with a guide hole. The combination lower connector is provided with a guide column. Or the combination upper joint is provided with a guide column and the combination lower joint is provided with a guide hole; the guide holes are detachably connected with the guide columns in an inserted mode. The grain lifting auger and the lifting gear box are guided and connected in an inserted mode through the guide columns and the guide holes, so that the grain lifting auger and the lifting gear box are combined stably and easily, and clamping stagnation is not prone to occurring. The combined upper connector and the combined lower connector serve as additional parts and can be replaced after being abraded, and the situation that the grain lifting auger and the lifting gear box are collided due to repeated insertion and connection, and the service life of the grain lifting auger and the service life of the lifting gear box are affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of grain lifting devices, specifically to a grain lifting device and a harvester. Background Technology

[0002] As the volume of grain bins in large harvesters continues to increase, most grain bin lids are now foldable. At the same time, in order to ensure that the grain is distributed relatively evenly inside the grain bin, grain lifting devices are used for grain distribution.

[0003] To facilitate the folding and unfolding of the grain tank lid, the grain lifting device is designed with a rotatable structure. The lifting cylinder of the grain lifting device can be rotated to connect with the end assembly of the grain conveyor, and the lifting auger and the lifting gear box can be driven together; alternatively, the lifting cylinder can be rotated to disconnect from the end assembly of the grain conveyor, and the drive can be disengaged. Because the grain tank lid needs to be folded and unfolded frequently, the lifting auger and the lifting gear box also need to be disconnected and connected multiple times, making the connection structure between the two particularly important.

[0004] Therefore, there is an urgent need for a reliable connection structure between the grain lifting auger and the lifting gear box. Utility Model Content

[0005] The technical problem to be solved by this utility model is how to make the grain lifting auger and the lifting gear box convenient and reliable to connect and disconnect.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A grain lifting device includes a grain lifting device end assembly, a grain lifting cylinder, and a lifting gear box. The lifting gear box is fixed inside the grain lifting device end assembly. The output shaft of the lifting gear box is fixed with a lower connector. The grain lifting cylinder includes a grain lifting auger and a grain lifting cylinder body. One end of the grain lifting cylinder body is hinged to the grain lifting device end assembly. One end of the grain lifting auger is fixed with an upper connector. The other end of the grain lifting auger is rotatably connected to the other end of the grain lifting cylinder body. The upper connector has a guide hole, and the lower connector has a guide post; or the upper connector has a guide post, and the lower connector has a guide hole. The guide hole and the guide post are detachably inserted into each other.

[0007] The beneficial effects of this utility model are: the grain lifting auger and the lifting gear box are guided and inserted through guide posts and guide holes. The two guide structures cooperate with each other to achieve a smooth, simple, and non-jamming connection between the grain lifting auger and the lifting gear box. At the same time, the upper and lower connectors are added as external components, which can be replaced after wear, avoiding repeated insertion and impact on the grain lifting auger and the lifting gear box, thus avoiding affecting their service life.

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

[0009] Furthermore, the outer wall of the end of the guide post facing the guide hole has a guide post conical surface, the diameter of which gradually increases from the end facing the guide hole to the end facing away from the guide hole. The inner wall of the guide hole has a guide hole conical surface, the diameter of which gradually decreases from the end facing the guide post to the end facing away from the guide post.

[0010] The beneficial effect of adopting the above-mentioned further solution is that the guide post and the guide hole are positioned by the centering of the guide post conical surface and the guide hole conical surface, so that the guide post is accurately inserted into the guide hole.

[0011] Furthermore, the end wall of the guide post facing the guide hole is an arc surface.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the end of the guide post adopts an arc surface structure, which reduces the collision damage between the guide post and the guide hole, and allows the guide post to be smoothly inserted into the guide hole.

[0013] Furthermore, the end of the guide post facing away from the guide hole also has a guide post positioning section, which is cylindrical and has a diameter equal to the diameter of the end of the guide post cone facing away from the guide hole. The end of the guide hole facing away from the guide post also has a guide hole positioning section, which is cylindrical and has a diameter equal to the diameter of the end of the guide hole cone facing away from the guide post, and the diameter of the guide hole positioning section is larger than the diameter of the guide post positioning section.

[0014] The beneficial effects of adopting the above-mentioned further solution are as follows: As the grain lifting cylinder rotates, the guide column gradually aligns with the guide hole. Guided by the conical surface of the guide column, the guide column inserts into the guide hole positioning section. Subsequently, the guide column positioning section inserts into the guide hole positioning section. The engagement process is smooth, simple, and less prone to jamming, reducing the impact when the grain lifting auger engages with the lifting gear box and preventing the grain lifting auger from jamming or damaging the grain lifting cylinder. Finally, the guide column positioning section and the guide hole positioning section are parallel to each other, achieving radial positioning of the grain lifting auger. This reduces vibration caused by imbalance in the grain lifting auger, resulting in smoother grain lifting. Furthermore, this solution is easier to manufacture and has higher reliability.

[0015] Furthermore, the output shaft of the lifting gear box is also fixed with a fork, and one end of the grain lifting auger is also fixed with a lever. The output shaft of the lifting gear box is used to drive the fork to rotate, and the fork pushes the lever and drives the grain lifting auger to rotate.

[0016] The beneficial effect of adopting the above-mentioned further solution is that after the grain lifting auger is connected to the lifting gear box, the output shaft of the lifting gear box pushes the lever through the shift fork, thereby driving the grain lifting auger to rotate.

[0017] Furthermore, the fork is provided with at least two pushing arc surfaces at intervals along its circumference, and the lever is fixed at least two at intervals along the circumference of the grain lifting auger. The at least two levers and the at least two pushing arc surfaces are in one-to-one correspondence and abut or separate.

[0018] The beneficial effects of adopting the above-mentioned further scheme are: the shift fork is equipped with at least two pushing arc surfaces to drive at least two shift levers simultaneously, and the output shafts of the grain lifting auger and the lifting gear box are subjected to uniform force.

[0019] Furthermore, the grain lifting device also includes a grain elevator, which is connected to the upper part of one end of the grain elevator end assembly, and one end of the grain lifting cylinder is hinged to the lower part of the other end of the grain elevator end assembly.

[0020] Furthermore, the top wall and side wall of one end of the grain elevator end assembly are fixedly connected by a rear arc plate, and the top wall and side wall of the other end of the grain elevator end assembly are fixedly connected by a front arc plate. The radius of curvature of the rear arc plate is 170mm-200mm, and the radius of curvature of the front arc plate is 200mm-220mm.

[0021] The beneficial effects of adopting the above-mentioned further scheme are as follows: the material is transported to the end assembly of the grain elevator via the grain elevator, flows along the curve of the rear arc plate, reduces material backflow, and guides the material to the other end of the end assembly of the grain elevator, where it falls under the action of gravity; the curved front arc plate can reduce the impact caused by the sudden change in curvature, reducing grain impact breakage. The material is then conveyed to the grain bin by the grain lifting hopper. Using the rear and front arc plates with this radius of curvature, the material flow rate can reach 93%.

[0022] Furthermore, a fixed base plate is fixed to the other end of the grain elevator end assembly, and the elevator gear box is fixedly connected to the fixed base plate.

[0023] Furthermore, a baffle plate is fixed inside the end assembly of the grain elevator. The baffle plate is located above the lifting gear box. One end of the baffle plate is fixedly connected to the inner wall of the end assembly of the grain elevator near the grain lifting cylinder, and the other end is inclined downward and spaced apart from the inner wall of the opposite side of the end assembly of the grain elevator.

[0024] The beneficial effect of adopting the above-mentioned further solution is that the gap between the baffle plate and the inner wall of the end assembly of the grain elevator is used to allow the material to flow downward to the grain lifting cylinder, while the baffle plate can prevent the material from flowing upward.

[0025] This utility model also provides a harvester, including the aforementioned grain lifting device. Attached Figure Description

[0026] Figure 1This is a structural diagram of the grain lifting device of this utility model. To show the internal structure, some side plates of the grain lifting device end assembly are omitted from the diagram.

[0027] Figure 2 This is a diagram showing the internal structure of the end assembly of the grain conveyor of this utility model;

[0028] Figure 3 This is a diagram showing the internal structure of the grain lifting hopper of this utility model;

[0029] Figure 4 This is a three-dimensional view of the grain lifting auger and the lifting gear box of this utility model when they are disconnected;

[0030] Figure 5 for Figure 4 A magnified view of the fork at point A;

[0031] Figure 6 This is a diagram showing the internal structure of the grain lifting cylinder when the grain lifting auger and the lifting gear box of this utility model are disconnected;

[0032] Figure 7 This is a three-dimensional view of the grain lifting auger and the lifting gear box of this utility model.

[0033] Figure 8 This is a partial sectional view of the connection between the grain lifting auger and the lifting gear box of this utility model;

[0034] Figure 9 This is a partially enlarged view of the grain lifting auger and the lifting gear box of this utility model when they are disconnected;

[0035] Figure 10 This is a structural diagram of the present invention combined with the upper connector;

[0036] Figure 11 This is a structural diagram of the lower connector of this utility model;

[0037] Figure 12 This is a partial sectional view of the present invention when the upper connector and the lower connector are connected.

[0038] Figure 13 This is a structural diagram of the upper connector in alternative solution one of this utility model;

[0039] Figure 14 This is a structural diagram of the lower connector and shift fork in alternative solution one of this utility model;

[0040] Figure 15 This is a structural diagram of the connection between the upper and lower connectors in alternative solution one of this utility model;

[0041] Figure 16 This is a structural diagram of the upper connector in alternative solution two of this utility model;

[0042] Figure 17 This is a structural diagram of the lower connector and shift fork in alternative solution two of this utility model;

[0043] Figure 18 This is a structural diagram of the connection between the upper and lower connectors in alternative scheme two of this utility model.

[0044] The attached diagram lists the components represented by each number as follows:

[0045] 1. Grain elevator; 2. Grain elevator end assembly; 21. Fixed base plate; 22. Rear arc plate; 23. Front arc plate; 24. Baffle plate; 3. Grain lifting cylinder; 31. Grain lifting auger; 32. Grain lifting connecting plate; 33. Upper connector; 34. Guide hole positioning section; 35. Guide hole conical surface; 36. Grain lifting cylinder body; 37. Lever; 4. Elevator gearbox; 41. Lower connector; 42. Lever fork; 43. Guide column conical surface; 44. Guide column positioning section. Detailed Implementation

[0046] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0047] Example 1

[0048] like Figures 1-18 As shown, this embodiment provides a grain lifting device, including a grain lifting device end assembly 2, a grain lifting cylinder 3, and a lifting gear box 4. The lifting gear box 4 is fixed inside the grain lifting device end assembly 2. The output shaft of the lifting gear box 4 is fixed with a lower connector 41. The grain lifting cylinder 3 includes a grain lifting auger 31 and a grain lifting cylinder body 36. One end of the grain lifting cylinder body 36 is hinged to the grain lifting device end assembly 2. One end of the grain lifting auger 31 is fixed with an upper connector 33. The other end of the grain lifting auger 31 is rotatably connected to the other end of the grain lifting cylinder body 36. The upper connector 33 has a guide hole, and the lower connector 41 has a guide post; or the upper connector 33 has a guide post, and the lower connector 41 has a guide hole. The guide hole and the guide post are detachably plugged in.

[0049] The grain lifting cylinder 36 rotates relative to the grain conveyor end assembly 2, allowing the grain lifting cylinder 3 to rotate so that the grain lifting auger 31 and the lifting gear box 4 can be connected or separated via guide posts and guide holes. The grain lifting auger 31 and the lifting gear box 4 are guided and connected via guide posts and guide holes; the two guide structures cooperate to ensure a smooth, simple, and non-jamming connection between the grain lifting auger 31 and the lifting gear box 4. Simultaneously, the upper connector 33 and the lower connector 41 serve as external components, allowing for replacement after wear, avoiding repeated insertion and impact on the grain lifting auger 31 and the lifting gear box 4, thus preventing a shortened service life.

[0050] The lifting gearbox 4 is used to transmit power. The power source transmits power to the input shaft of the lifting gearbox 4 and outputs it from the output shaft of the lifting gearbox 4, thereby driving the grain lifting auger 31 to rotate and transport grain. The power source can be an electric motor or other common electric or hydraulic drive devices. The power source can be directly connected to the input shaft of the lifting gearbox 4, or it can be connected through a transmission structure such as gear, chain drive or belt drive.

[0051] Specifically, such as Figure 3 and Figure 8 As shown, after the grain lifting cylinder 36 rotates until the guide post and guide hole are inserted, the lifting gear box 4 provides power to drive the grain lifting auger 31 to rotate. Figure 4 As shown, after the grain lifting cylinder 36 rotates until the guide column and guide hole separate, the connection between the lifting gear box 4 and the grain lifting auger 31 is broken.

[0052] Specifically, such as Figure 6 As shown, the other end of the grain lifting auger 31 is rotatably connected to the other end of the grain lifting cylinder 36. When the grain lifting cylinder 36 rotates until the grain lifting auger 31 is disconnected from the lifting gear box 4, the side wall of one end of the grain lifting auger 31 will be tightly pressed against the inner side wall of the grain lifting cylinder 36 due to gravity. After the grain lifting cylinder 36 rotates until the grain lifting auger 31 is connected to the lifting gear box 4, under the positioning action of the guide shaft and guide hole, as... Figure 3 As shown, the grain lifting auger 31 returns to its original position and becomes coaxial with the grain lifting cylinder 36.

[0053] In one specific example, the lower connector 41 is threadedly connected to the output shaft of the lifting gear box 4.

[0054] Specifically, a grain lifting connecting plate 32 is fixed to the side wall of the grain lifting cylinder 36. The grain lifting connecting plate 32 is hinged to the power unit of the harvester, which is an electric push rod or a hydraulic rod, etc. After the grain tank cover of the harvester is opened, the power unit of the harvester drives the grain lifting cylinder 36 to move, such as... Figure 3 As shown, the grain lifting auger 31 gradually engages with the lifting cylinder 36 and the lifting gear box 4, thereby enabling the grain lifting auger 31 to rotate and lift the grain. Conversely, when the grain tank cover is folded and closed, the power unit drives the lifting cylinder 36 to move until it separates from the lifting gear box 4, as shown. Figure 4 As shown.

[0055] Option 1: The guide post and guide hole are rotating structures, such as cylindrical, conical, or a combination of cylindrical and conical structures. In this case, the guide post and guide hole only serve to coaxially connect the lifting gear box 4 and the grain lifting auger 31. A shift fork 42 and a shift lever 37 are also required to achieve transmission between the two. See Embodiment 2 for details. Option 2: The guide post and guide hole are prismatic structures with the same number of edges, such as hexagonal prisms. In this case, after the guide post and guide hole are connected, they can also transmit the rotational torque output by the output shaft of the lifting gear box 4, thereby driving the grain lifting auger 31 to rotate. Although Option 2 can achieve transmission simultaneously with connection, it requires higher angle and precision during connection. Therefore, Option 1 is the preferred implementation scheme.

[0056] Example 2

[0057] Based on the above embodiment one, this embodiment provides a structure for a guide post and a guide hole, such as... Figures 1 to 12 As shown, the outer wall of the guide post facing the guide hole has a guide post cone surface 43, the diameter of which gradually increases from the end facing the guide hole to the end facing away from the guide hole. The inner wall of the guide hole has a guide hole cone surface 35, the diameter of which gradually decreases from the end facing the guide post to the end facing away from the guide post.

[0058] The guide post and the guide hole are aligned and positioned by the conical surface 43 of the guide post and the conical surface 35 of the guide hole, so that the guide post is accurately inserted into the guide hole.

[0059] In other words, such as Figure 10 and Figure 11 As shown, the end of the guide post is tapered, and the end of the guide hole has a flared opening.

[0060] Optionally, the cone angles of the guide post cone surface 43 and the guide hole cone surface 35 may be the same or different. Preferably, the cone angles of the guide post cone surface 43 and the guide hole cone surface 35 are different. More preferably, the cone angle of the guide hole cone surface 35 is greater than the cone angle of the guide post cone surface 43.

[0061] Based on the above scheme, the end wall of the guide post facing the guide hole is an arc surface.

[0062] The end of the guide post adopts an arc-shaped structure, which reduces the impact damage between the guide post and the guide hole, allowing the guide post to be smoothly inserted into the guide hole.

[0063] In other words, such as Figure 11 As shown, the end wall of the guide post facing the guide hole is spherical and smoothly transitions to the end of the guide post cone surface 43 with a smaller diameter.

[0064] Based on the above scheme, the end of the guide post facing away from the guide hole also has a guide post positioning section 44, which is cylindrical and has a diameter equal to the diameter of the end of the guide post cone surface 43 facing away from the guide hole. The end of the guide hole facing away from the guide post also has a guide hole positioning section 34, which is cylindrical and has a diameter equal to the diameter of the end of the guide hole cone surface 35 facing away from the guide post, and the diameter of the guide hole positioning section 34 is larger than the diameter of the guide post positioning section 44.

[0065] like Figure 8 and Figure 12 As shown, as the grain lifting cylinder 3 rotates, the guide column and guide hole gradually align. Guided by the guide hole's conical surface 35, the guide column's conical surface 43 inserts into the guide hole's positioning section 34. Subsequently, the guide column's positioning section 44 inserts into the guide hole's positioning section 34. This engagement process is smooth, simple, and less prone to jamming, reducing the impact when the grain lifting auger 31 engages with the lifting gear box 4, preventing the grain lifting auger 31 from jamming or damaging the grain lifting cylinder 3. Finally, the guide column's positioning section 44 and the guide hole's positioning section 34 are parallel to each other. The diameter of the guide hole's positioning section 34 is slightly larger than the diameter of the guide column's positioning section 44. The guide column's positioning section 44 and the guide hole's positioning section 34 achieve radial positioning of the grain lifting auger 31, reducing vibrations caused by imbalance, resulting in smoother grain lifting. Furthermore, this process is relatively easy to manufacture and has high reliability.

[0066] Specifically, the connection between the guide post positioning section 44 and the guide post cone surface 43 is transitioned by a rounded corner, and the connection between the guide hole positioning section 34 and the guide hole cone surface 35 is transitioned by a rounded corner.

[0067] Based on the above scheme, the output shaft of the lifting gear box 4 is also fixed with a fork 42, and one end of the grain lifting auger 31 is also fixed with a lever 37. The output shaft of the lifting gear box 4 is used to drive the fork 42 to rotate, and the fork 42 pushes the lever 37 and drives the grain lifting auger 31 to rotate.

[0068] After the grain lifting auger 31 is connected to the lifting gear box 4, the output shaft of the lifting gear box 4 pushes the lever 37 through the shift fork 42, thereby driving the grain lifting auger 31 to rotate.

[0069] Alternatively, the installation positions of the shift fork 42 and the shift lever 37 can be interchanged. That is, the shift fork 42 is fixedly connected to the grain lifting auger 31, and the shift lever 37 is fixedly connected to the output shaft of the lifting gear box 4.

[0070] Specifically, the shift fork 42 has a pushing protrusion extending radially outward, and the pushing protrusion can be of any shape.

[0071] Based on the above scheme, the fork 42 is provided with at least two pushing arc surfaces at intervals along its circumference, and at least two levers 37 are fixed at intervals along the circumference of the grain lifting auger 31. At least two levers 37 are in contact with or separate from at least two pushing arc surfaces in a one-to-one correspondence.

[0072] The shift fork 42 is equipped with at least two pushing arc surfaces that simultaneously drive at least two shift levers 37, so that the output shafts of the grain lifting auger 31 and the lifting gear box 4 are subjected to uniform force.

[0073] More specifically, the lever 37 is cylindrical, and the fork 42 has at least two pushing protrusions spaced apart along its circumference. The sidewalls of the pushing protrusions are pushing arc surfaces, such as... Figure 5 and Figure 14 As shown, the pushing arc surface has an inwardly concave arc section that matches the shape of the outer wall of the lever 37.

[0074] When the grain lifting auger 31 rotates to engage with the lifting gear box 4, the lever 37 is inserted between two adjacent pushing arc surfaces. As the lifting gear box 4 rotates, the pushing arc surfaces rotate to abut against the lever 37, and push the lever 37 to move.

[0075] Example 3

[0076] Based on the above embodiment two, this embodiment provides an alternative solution one for the guide post and guide hole structure, such as... Figures 13-15 As shown, unlike Embodiment 2, in this embodiment, the guide hole is a cylindrical inner hole of the grain lifting auger 31, and the grain lifting auger 31 and the connecting joint 33 are integrally formed. This embodiment can realize the docking of the grain lifting auger 31 and the lifting gear box 4, but the fitting precision of the guide shaft and guide hole is high. Therefore, Embodiment 2 is a preferred embodiment of the guide post and guide hole.

[0077] Example 4

[0078] Based on the above embodiment two, this embodiment provides an alternative solution two for the guide post and guide hole structure, such as... Figures 16-18 As shown, unlike Embodiment 2, in this embodiment, a nut is installed on the output shaft of the lifting gear box 4. The output shaft and the nut form a guide post. Its structure is simple, but due to the weak axial positioning and the fact that the nut has sharp edges that are easy to damage the joint 33, Embodiment 2 is a preferred embodiment of the guide post and guide hole.

[0079] Example 5

[0080] Based on any one of Embodiments 1 to 4, the grain lifting device further includes a grain elevator 1, which is connected to the upper part of one end of the grain elevator end assembly 2, and one end of the grain lifting cylinder 36 is hinged to the lower part of the other end of the grain elevator end assembly 2.

[0081] Specifically, the upper end of the grain elevator 1 is connected to the upper part of one end of the grain elevator end assembly 2, and the lower end of the grain lifting cylinder 36 is hinged to the lower part of the other end of the grain elevator end assembly 2.

[0082] Based on the above solutions, such as Figure 2 As shown, the top wall and side wall of one end of the grain elevator end assembly 2 are fixedly connected by a rear arc plate 22, and the top wall and side wall of the other end of the grain elevator end assembly 2 are fixedly connected by a front arc plate 23. The radius of curvature of the rear arc plate 22 is 170mm-200mm, and the radius of curvature of the front arc plate 23 is 200mm-220mm.

[0083] The material is transported to the end assembly 2 of the grain elevator 1, flowing along the curved path of the rear arc plate 22 to reduce backflow and guide the material to the other end of the end assembly 2, where it falls under gravity. The curved front arc plate 23 reduces the impact caused by abrupt changes in curvature, minimizing grain breakage. The material is then conveyed to the grain bin by the grain lifting cylinder 3. Using the rear arc plate 22 and front arc plate 23 with this radius of curvature, the material flow rate can reach 93%.

[0084] In one specific example, the radius of curvature of the rear arc plate 22 is 183.5 mm, and the radius of curvature of the front arc plate 23 is 210 mm.

[0085] Based on the above scheme, a fixed base plate 21 is fixed at the other end of the grain elevator end assembly 2, and the elevator gear box 4 is fixedly connected to the fixed base plate 21.

[0086] like Figure 1 and Figure 4 As shown, in one specific example, the fixed base plate 21 is inclined downwards at one end near the grain lifting cylinder 3. Figure 15 As shown, in another example, the fixed base plate 21 is set vertically.

[0087] Based on the above solutions, such as Figure 2 As shown, a baffle plate 24 is fixed inside the grain elevator end assembly 2. The baffle plate 24 is located above the elevator tooth box 4. One end of the baffle plate 24 is fixedly connected to the inner wall of the grain elevator end assembly 2 near the grain lifting cylinder 3, and the other end is inclined downward and spaced apart from the inner wall of the opposite side of the grain elevator end assembly 2.

[0088] The gap between the baffle plate 24 and the inner wall of the grain elevator end assembly 2 is used to allow the material to flow downward to the grain lifting cylinder 3, while the baffle plate 24 can prevent the material from flowing upward.

[0089] Specifically, the baffle plate 24 is an open-bottomed, vertically slit shape, a half-frustum shape, a half-pyramidal shape, or a half-conical shape. The baffle plate 24 can also be other blocking structures formed by bending a flat plate. The grain elevator end assembly 2 has a grain lifting connection port on the side wall near the grain lifting cylinder 3, and the baffle plate 24 is located above the grain lifting connection port.

[0090] Example 6

[0091] Based on any one of Embodiments 1 to 5, this embodiment also provides a harvester, including the aforementioned grain lifting device.

[0092] Specifically, the grain elevator 1 and the grain elevator end assembly 2 are fixed on the frame of the harvester. After the grain lifting cylinder 3 rotates to connect with the lifting gear box 4, its upper end is connected to the grain box of the harvester.

[0093] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", 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 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 utility model.

[0094] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0095] In this utility model, 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," "on top of," and "over" 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.

[0096] 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.

[0097] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0098] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grain elevator, characterized in that The device includes a grain elevator end assembly (2), a grain lifting cylinder (3), and a lifting gear box (4). The lifting gear box (4) is fixed inside the grain elevator end assembly (2). The output shaft of the lifting gear box (4) is fixed with a lower connector (41). The grain lifting cylinder (3) includes a grain lifting auger (31) and a grain lifting cylinder body (36). One end of the grain lifting cylinder body (36) is hinged to the grain elevator end assembly (2). One end of the grain lifting auger (31) is fixed with an upper connector (33). The other end of the grain lifting auger (31) is rotatably connected to the other end of the grain lifting cylinder body (36). The upper connector (33) has a guide hole, and the lower connector (41) has a guide post; or the upper connector (33) has a guide post, and the lower connector (41) has a guide hole. The guide hole and the guide post are detachably plugged in.

2. A grain elevator according to claim 1, wherein The outer wall of the guide post facing the guide hole has a guide post cone surface (43), the diameter of which gradually increases from the end facing the guide hole to the end away from the guide hole. The inner wall of the guide hole has a guide hole cone surface (35), the diameter of which gradually decreases from the end facing the guide post to the end away from the guide post.

3. A grain elevator according to claim 2, wherein The end wall of the guide post facing the guide hole is an arc surface.

4. A grain elevator according to claim 2, wherein The guide post also has a guide post positioning section (44) at the end opposite to the guide hole. The guide post positioning section (44) is cylindrical. The diameter of the guide post positioning section (44) is equal to the diameter of the end of the guide post cone surface (43) opposite to the guide hole. The guide hole also has a guide hole positioning section (34) at the end opposite to the guide post. The guide hole positioning section (34) is cylindrical. The diameter of the guide hole positioning section (34) is equal to the diameter of the end of the guide hole cone surface (35) opposite to the guide post. The diameter of the guide hole positioning section (34) is greater than the diameter of the guide post positioning section (44).

5. A grain lifting device according to claim 1, characterized in that, The output shaft of the lifting gear box (4) is also fixed with a fork (42), and one end of the grain lifting auger (31) is also fixed with a lever (37). The output shaft of the lifting gear box (4) is used to drive the fork (42) to rotate. The fork (42) pushes the lever (37) and drives the grain lifting auger (31) to rotate.

6. A grain elevator according to claim 5, wherein The fork (42) is provided with at least two pushing arc surfaces at intervals along its circumference, and the lever (37) is fixed at least two at intervals along the circumference of the grain lifting auger (31). At least two levers (37) and at least two pushing arc surfaces are in one-to-one contact or separation.

7. The grain elevator of claim 1, wherein It also includes a grain elevator (1), which is connected to the upper part of one end of the grain elevator end assembly (2), and one end of the grain lifting cylinder (36) is hinged to the lower part of the other end of the grain elevator end assembly (2).

8. A grain elevator according to claim 7, wherein The top wall and side wall of one end of the grain elevator end assembly (2) are fixedly connected by a rear arc plate (22), and the top wall and side wall of the other end of the grain elevator end assembly (2) are fixedly connected by a front arc plate (23). The radius of curvature of the rear arc plate (22) is 170mm-200mm, and the radius of curvature of the front arc plate (23) is 200mm-220mm.

9. A grain elevator according to claim 7, wherein The other end of the grain elevator end assembly (2) is fixed with a fixed base plate (21), and the elevator gear box (4) is fixedly connected to the fixed base plate (21).

10. A grain elevator according to claim 9, wherein A baffle plate (24) is fixed inside the grain elevator end assembly (2). The baffle plate (24) is located above the elevator tooth box (4). One end of the baffle plate (24) is fixedly connected to the inner wall of the grain elevator end assembly (2) near the grain lifting cylinder (3), and the other end is inclined downward and spaced apart from the inner wall of the opposite side of the grain elevator end assembly (2).

11. A harvester characterized by Includes a grain lifting device as described in any one of claims 1-10.

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