Grain lifting device and harvester

Abstract

The invention relates to a grain lifting device and a harvester and relates to the field of grain lifting devices.The output shaft of a lifting gear box is fixedly provided with a lower combination connector, 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 to a grain lifting device end assembly, and one end of the grain lifting auger is fixedly provided with an upper combination connector; 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] The present invention relates to the field of grain lifting devices, and particularly to a grain lifting device and a harvester. Background Art

[0002] With the continuous increase in the volume of the grain tank of large harvesters, most of the grain tank covers are foldable; at the same time, in order to ensure that the grain is more evenly distributed in the grain tank, a grain lifting device is used for grain distribution.

[0003] In order to cooperate with the folding and unfolding of the grain tank cover, the grain lifting device is designed as a rotatable structure. The grain lifting cylinder of the grain lifting device can be rotated to communicate with the end assembly of the grain elevator, and the grain lifting auger is driven by the lifting gearbox, or the grain lifting cylinder is rotated to disconnect from the end assembly of the grain elevator and the drive is disconnected. Since the grain tank cover needs to be folded and unfolded frequently, the grain lifting auger and the lifting gearbox also need to be disconnected and connected multiple times, and the connection structure between the two is particularly important.

[0004] Therefore, there is an urgent need for a reliable connection structure between the grain lifting auger and the lifting gearbox. Summary of the Invention

[0005] The technical problem to be solved by the present invention is how to connect and disconnect the grain lifting auger and the lifting gearbox conveniently and reliably.

[0006] The technical solution of the present invention to solve the above technical problem is as follows: A grain lifting device includes an end assembly of a grain elevator, a grain lifting cylinder, and a lifting gearbox. The lifting gearbox is fixed inside the end assembly of the grain elevator. A combined lower joint is fixed to the output shaft of the lifting gearbox. 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 end assembly of the grain elevator. One end of the grain lifting auger is fixed with a combined upper joint. The other end of the grain lifting auger is rotatably connected to the other end of the grain lifting cylinder body. The combined upper joint has a guiding hole, and the combined lower joint has a guiding post; or the combined upper joint has a guiding post, and the combined lower joint has a guiding hole; the guiding hole and the guiding post are detachably inserted.

[0007] The beneficial effect of the present invention is that the grain lifting auger and the lifting gearbox are guided and inserted through the guiding post and the guiding hole. The two guiding structures cooperate with each other to achieve stable, simple and non-sticking combination of the grain lifting auger and the lifting gearbox. At the same time, the combined upper joint and the combined lower joint are used as additional components, which can be replaced after wear, avoiding repeated insertion and collision of the grain lifting auger and the lifting gearbox, and affecting the service life of the grain lifting auger and the lifting gearbox.

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

[0009] Further, an outer wall of one end of the guiding column facing the guiding hole has a guiding column conical surface, a diameter of the guiding column conical surface gradually increases from one end facing the guiding hole to one end facing away from the guiding hole, an inner wall of the guiding hole has a guiding hole conical surface, and a diameter of the guiding hole conical surface gradually decreases from one end facing the guiding column to one end facing away from the guiding column.

[0010] The beneficial effect of adopting the above further solution is that: the guiding column and the guiding hole are centered and positioned through the guiding column conical surface and the guiding hole conical surface, so that the guiding column is accurately inserted into the guiding hole.

[0011] Further, an end wall of one end of the guiding column facing the guiding hole is an arc surface.

[0012] The beneficial effect of adopting the above further solution is that: the end part of the guiding column adopts an arc surface structure, which reduces the collision damage between the guiding column and the guiding hole, so that the guiding column can be smoothly inserted into the guiding hole.

[0013] Further, one end of the guiding column facing away from the guiding hole further has a guiding column positioning section, the guiding column positioning section is cylindrical, a diameter of the guiding column positioning section is equal to a diameter of an end of the guiding column conical surface facing away from the guiding hole, one end of the guiding hole facing away from the guiding column further has a guiding hole positioning section, the guiding hole positioning section is a cylindrical hole, a diameter of the guiding hole positioning section is equal to a diameter of an end of the guiding hole conical surface facing away from the guiding column, and the diameter of the guiding hole positioning section is greater than the diameter of the guiding column positioning section.

[0014] The beneficial effect of adopting the above further solution is that: as the grain lifting cylinder rotates, the guiding column and the guiding hole are gradually butted, the guiding column conical surface is inserted into the guiding hole positioning section under the guiding action of the guiding hole conical surface, and then the guiding column positioning section is inserted into the guiding hole positioning section. The combination process is stable, simple and not prone to jamming, reducing the impact when the grain lifting auger is combined with the grain lifting gear box, preventing the grain lifting auger from jamming and damaging the grain lifting cylinder. Finally, the axes of the guiding column positioning section and the guiding hole positioning section are parallel, and the guiding column positioning section and the guiding hole positioning section realize the radial positioning of the grain lifting auger, reducing the vibration of the grain lifting auger caused by imbalance, more smoothly transporting grains, and having a lower manufacturing difficulty and high reliability.

[0015] Further, a fork is also fixed on an output shaft of the grain lifting gear box, a lever is also fixed on one end of the grain lifting auger, the output shaft of the grain 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 further solution is that: after the grain lifting auger is inserted into the grain lifting gear box, the output shaft of the grain lifting gear box drives the lever through the fork, thereby driving the grain lifting auger to rotate.

[0017] Further, at least two pushing arc surfaces are provided at intervals along the circumferential direction of the fork, at least two push rods are fixedly arranged at intervals along the circumferential direction of the grain lifting auger, and at least two push rods are in one-to-one correspondence with and abut against or separate from at least two pushing arc surfaces.

[0018] The beneficial effect of adopting the above further scheme is that: the fork is provided with at least two pushing arc surfaces to drive at least two push rods simultaneously, and the grain lifting auger and the output shaft of the grain lifting gearbox are evenly stressed.

[0019] Further, the grain lifting device further includes a grain elevator, the grain elevator is communicated with the upper part of one end of the grain elevator end component, and one end of the grain lifting cylinder is hinged to the lower part of the other end of the grain elevator end component.

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

[0021] The beneficial effect of adopting the above further scheme is that: the material is transported to the grain elevator end component through the grain elevator, flows along the curve of the rear arc plate, reduces the backflow of the material, and guides the material to the other end of the grain elevator end component, and falls under the action of gravity; the front arc plate with an arc can reduce the impact caused by the sudden change of curvature and reduce the impact and breakage of the grains. Subsequently, the material is transported to the grain box by the grain lifting cylinder. With the rear arc plate and the front arc plate with such a radius of curvature, the material flow smoothness can reach 93%.

[0022] Further, a fixed seat plate is fixed at the other end inside the grain elevator end component, and the grain lifting gearbox is fixedly connected to the fixed seat plate.

[0023] Further, a baffle plate is fixed inside the grain elevator end component, the baffle plate is located above the grain lifting gearbox, one end of the baffle plate is fixedly connected to the inner wall of the side of the grain elevator end component close to the grain lifting cylinder, and the other end thereof is inclined obliquely downward and is arranged at an interval from the inner wall of the opposite side of the grain elevator end component.

[0024] The beneficial effect of adopting the above further scheme is that: the gap between the baffle plate and the inner wall of the grain elevator end component is used to enable the material to flow downward to the grain lifting cylinder, and at the same time, the baffle plate can prevent the material from flowing upward in a reverse manner.

[0025] The present invention also provides a harvester, including the above-mentioned grain lifting device. Description of the Drawings

[0026] Figure 1This is the structural diagram of the grain lifting device of the present invention. To show the internal structure, some side plates of the end assembly of the grain elevator are hidden in the figure; Figure 2 This is the internal structural diagram of the end assembly of the grain elevator of the present invention; Figure 3 This is the internal structural diagram of the grain lifting cylinder of the present invention; Figure 4 This is the 3D view when the grain lifting auger is disconnected from the elevator gearbox of the present invention; Figure 5 For Figure 4 Partial enlarged view of the fork at position A of Figure 6 This is the internal structural diagram of the grain lifting cylinder when the grain lifting auger is disconnected from the elevator gearbox of the present invention; Figure 7 This is the 3D view when the grain lifting auger is connected to the elevator gearbox of the present invention; Figure 8 This is the partial cross-sectional view when the grain lifting auger is connected to the elevator gearbox of the present invention; Figure 9 This is the partial enlarged view when the grain lifting auger is disconnected from the elevator gearbox of the present invention; Figure 10 This is the structural diagram of the present invention combined with the upper joint; Figure 11 This is the structural diagram of the present invention combined with the lower joint; Figure 12 This is the partial cross-sectional view when the upper joint and the lower joint of the present invention are connected; Figure 13 This is the structural diagram of the upper joint of the first alternative of the present invention; Figure 14 This is the structural diagram of the lower joint and the fork of the first alternative of the present invention; Figure 15 This is the structural diagram when the upper joint and the lower joint of the first alternative of the present invention are connected; Figure 16 This is the structural diagram of the upper joint of the second alternative of the present invention; Figure 17 This is the structural diagram of the lower joint and the fork of the second alternative of the present invention; Figure 18 This is the structural diagram when the upper joint and the lower joint of the second alternative of the present invention are connected.

[0027] In the drawings, the list of components represented by each reference numeral is as follows: 1. Grain elevator; 2. Grain elevator end assembly; 21. Fixed seat plate; 22. Rear arc plate; 23. Front arc plate; 24. Material blocking plate; 3. Grain lifting cylinder; 31. Grain lifting auger; 32. Grain lifting connecting plate; 33. Combined upper joint; 34. Guide hole positioning section; 35. Guide hole conical surface; 36. Grain lifting cylinder; 37. Shift rod; 4. Lifting gear box; 41. Combined lower joint; 42. Shift fork; 43. Guide column conical surface; 44. Guide column positioning section. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] Embodiment 1 like Figures 1-18 As shown, the present embodiment provides a grain lifting device, including a grain elevator end assembly 2, a grain lifting cylinder 3 and a lifting gear box 4, wherein the lifting gear box 4 is fixed in the grain elevator end assembly 2, and the output shaft of the lifting gear box 4 is fixed with a combined lower joint 41, the grain lifting cylinder 3 includes a grain lifting agitator 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 agitator 31 is fixed with a combined upper joint 33, and the other end of the grain lifting agitator 31 is rotatably connected to the other end of the grain lifting cylinder body 36; the combined upper joint 33 has a guide hole, and the combined lower joint 41 has a guide column; or the combined upper joint 33 has a guide column, and the combined lower joint 41 has a guide hole; the guide hole and the guide column are detachably plugged.

[0030] The grain lifting cylinder 36 rotates relative to the grain elevator end assembly 2, so that the grain lifting cylinder 3 can be rotated to the grain lifting auger 31 and the lifting gear box 4 through the guide column and the guide hole. The grain lifting auger 31 and the lifting gear box 4 are guided and plugged in through the guide column and the guide hole. The two guide structures cooperate with each other to achieve a smooth, simple and non-stuck combination of the grain lifting auger 31 and the lifting gear box 4. At the same time, the upper joint 33 and the lower joint 41 are combined as additional parts, which can be replaced after wear, avoiding repeated plugging and bumping of the grain lifting auger 31 and the lifting gear box 4, which affects the service life of the grain lifting auger 31 and the lifting gear box 4.

[0031] The lifting gearbox 4 is used to transmit power, and the power source transmits power to the input shaft of the lifting gearbox 4, and outputs power 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 a motor or other common electric or hydraulic drive device, and the power source can be directly connected to the input shaft of the lifting gearbox 4, or through a transmission structure such as a gear, chain drive or belt drive.

[0032] Specifically, Figure 3 andFigure 8 As shown, after the grain lifting cylinder body 36 rotates to the position where the guide post and the guide hole are inserted, the grain lifting gearbox 4 provides power to drive the grain lifting auger 31 to rotate. As Figure 4 shown, after the grain lifting cylinder body 36 rotates to the position where the guide post and the guide hole are separated, the connection between the grain lifting gearbox 4 and the grain lifting auger 31 is disconnected.

[0033] Specifically, as Figure 6 shown, the other end of the grain lifting auger 31 is rotatably connected to the other end of the grain lifting cylinder body 36. When the grain lifting cylinder body 36 rotates to the position where the grain lifting auger 31 is disconnected from the grain lifting gearbox 4, one end of the grain lifting auger 31 will closely adhere to the inner side wall of the grain lifting cylinder body 36 due to the action of gravity. After the grain lifting cylinder body 36 rotates to the position where the grain lifting auger 31 is connected to the grain lifting gearbox 4, under the positioning action of the guide shaft and the guide hole, as Figure 3 shown, the grain lifting auger 31 returns to be coaxial with the grain lifting cylinder body 36.

[0034] In one specific example, the lower joint 41 is threadedly connected to the output shaft of the grain lifting gearbox 4.

[0035] Specifically, a grain lifting connecting plate 32 is fixed on the side wall of the grain lifting cylinder body 36. The grain lifting connecting plate 32 is hinged to the power device of the harvester. The power device is an electric push rod or a hydraulic rod, etc. After the grain box cover of the harvester is unfolded, the power device of the harvester pushes the grain lifting cylinder body 36 to move. As Figure 3 shown, the grain lifting auger 31 gradually and slowly combines with the grain lifting gearbox 4 following the grain lifting cylinder body 36, so as to realize the rotation and lifting of the grain by the grain lifting auger 31. On the contrary, when the grain box cover is folded and closed, the power device drives the grain lifting cylinder body 36 to move to be separated from the grain lifting gearbox 4, as Figure 4 shown.

[0036] Optionally, Scheme 1: The guide post and the guide hole are of a rotary body structure, such as a cylindrical shape, a conical shape, or a combined structure of a cylindrical shape and a conical shape. At this time, the guide post and the guide hole only play the role of coaxial docking between the grain lifting gearbox 4 and the grain lifting auger 31, and a fork 42 and a lever 37 need to be equipped to realize the transmission between the two. For details, see Embodiment 2; Scheme 2: The guide post and the guide hole are of a prismatic structure with the same number of edges, such as a hexagonal prism, etc. At this time, after the guide post and the guide hole are docked, the rotational torque output by the output shaft of the grain lifting gearbox 4 can also be transmitted, so as to drive the grain lifting auger 31 to rotate. Although Scheme 2 can realize the transmission while docking, the requirements for the angle and accuracy during docking are relatively high. Therefore, Scheme 1 is a better implementation scheme.

[0037] Embodiment 2 On the basis of the above Embodiment 1, this embodiment provides a structure of the guide post and the guide hole, as Figures 1-12As shown, one end outer wall of the guide post facing the guide hole has a guide post conical surface 43, the diameter of the guide post conical surface 43 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 35, and the diameter of the guide hole conical surface 35 gradually decreases from the end facing the guide post to the end facing away from the guide post.

[0038] The guide post and the guide hole are centered and positioned through the guide post conical surface 43 and the guide hole conical surface 35, so that the guide post can be accurately inserted into the guide hole.

[0039] In other words, as Figure 10 and Figure 11 shown, the end of the guide post is conical, and the end of the guide hole has a flared opening.

[0040] Optionally, the taper angles of the guide post conical surface 43 and the guide hole conical surface 35 are the same or different. Preferably, the taper angles of the guide post conical surface 43 and the guide hole conical surface 35 are different. More preferably, the taper angle of the guide hole conical surface 35 is greater than the taper angle of the guide post conical surface 43.

[0041] On the basis of the above solution, the end wall of one end of the guide post facing the guide hole is an arc surface.

[0042] The end of the guide post adopts an arc surface structure, reducing the collision damage between the guide post and the guide hole, so that the guide post can be smoothly inserted into the guide hole.

[0043] In other words, as Figure 11 shown, the end wall of one end of the guide post facing the guide hole is spherical crown-shaped and smoothly transitions with the end of the guide post conical surface 43 with a smaller diameter.

[0044] On the basis of the above solution, the other end of the guide post facing away from the guide hole further has a guide post positioning section 44, 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 conical surface 43 facing away from the guide hole, the other end of the guide hole facing away from the guide post further has a guide hole positioning section 34, the guide hole positioning section 34 is a cylindrical hole, the diameter of the guide hole positioning section 34 is equal to the diameter of the end of the guide hole conical surface 35 facing away from the guide post, and the diameter of the guide hole positioning section 34 is greater than the diameter of the guide post positioning section 44.

[0045] As Figure 8 and Figure 12As shown in the figure, as the grain lifting cylinder 3 rotates, the guide post and the guide hole are gradually butted. Under the guiding action of the conical surface 35 of the guide hole, the conical surface 43 of the guide post is inserted into the positioning section 34 of the guide hole. Subsequently, the positioning section 44 of the guide post is inserted into the positioning section 34 of the guide hole. The combination process is stable, simple, and not prone to jamming, reducing the impact when the grain lifting auger 31 is combined with the grain lifting gearbox 4, and preventing the grain lifting auger 31 from jamming and damaging the grain lifting cylinder 3. Finally, the axes of the positioning section 44 of the guide post and the positioning section 34 of the guide hole are parallel, the diameter of the positioning section 34 of the guide hole is slightly larger than that of the positioning section 44 of the guide post, and the positioning section 44 of the guide post and the positioning section 34 of the guide hole achieve radial positioning of the grain lifting auger 31, reducing the vibration of the grain lifting auger 31 caused by imbalance, transporting grains more smoothly, and having lower manufacturing difficulty and high reliability.

[0046] Specifically, the connection between the positioning section 44 of the guide post and the conical surface 43 of the guide post is transitioned by a rounded corner, and the connection between the positioning section 34 of the guide hole and the conical surface 35 of the guide hole is transitioned by a rounded corner.

[0047] On the basis of the above solution, a fork 42 is further fixed to the output shaft of the grain lifting gearbox 4, and a lever 37 is further fixed to one end of the grain lifting auger 31. The output shaft of the grain lifting gearbox 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.

[0048] After the grain lifting auger 31 is inserted into the grain lifting gearbox 4, the output shaft of the grain lifting gearbox 4 drives the lever 37 through the fork 42, thereby driving the grain lifting auger 31 to rotate.

[0049] Alternatively, the installation positions of the fork 42 and the lever 37 can be interchanged, that is to say, the fork 42 is fixedly connected to the grain lifting auger 31, and the lever 37 is fixedly connected to the output shaft of the grain lifting gearbox 4.

[0050] Specifically, the fork 42 has a pushing protrusion extending radially outward, and the pushing protrusion can be of any shape.

[0051] On the basis of the above solution, at least two pushing arc surfaces are provided on the fork 42 at intervals along its circumferential direction, and at least two levers 37 are fixedly provided on the grain lifting auger 31 at intervals along the circumferential direction. At least two of the levers 37 are in one-to-one contact or separation with at least two of the pushing arc surfaces.

[0052] The fork 42 is provided with at least two pushing arc surfaces to simultaneously drive at least two levers 37, and the forces on the output shaft of the grain lifting auger 31 and the grain lifting gearbox 4 are uniform.

[0053] More specifically, the lever 37 is cylindrical, and at least two pushing protrusions are provided on the fork 42 at intervals along its circumferential direction. The side wall of the pushing protrusion is a pushing arc surface, as shown in Figure 5 and Figure 14As shown, the pushing arc surface has a concave arc surface section adapted to the outer wall shape of the lever 37.

[0054] When the grain lifting auger 31 rotates to be docked with the lifting gear box 4, the lever 37 is inserted between two adjacent pushing arc surfaces. As the lifting gear box 4 operates, the pushing arc surface rotates to abut against the lever 37 and pushes the lever 37 to move.

[0055] Embodiment Three Based on the above Embodiment Two, this embodiment provides an alternative solution one for the guide post and guide hole structure. As Figures 13-15 shown, different from Embodiment Two, in this embodiment, the guide hole is the cylindrical inner hole of the grain lifting auger 31, and the grain lifting auger 31 and the combined upper joint 33 are integrally formed. The solution of this embodiment can achieve the docking of the grain lifting auger 31 and the lifting gear box 4, but has relatively high matching precision for the guide shaft and the guide hole. Therefore, Embodiment Two is a preferred embodiment for the guide post and the guide hole.

[0056] Embodiment Four Based on the above Embodiment Two, this embodiment provides an alternative solution two for the guide post and guide hole structure. As Figures 16-18 shown, different from Embodiment Two, in this embodiment, a nut is installed on the output shaft of the lifting gear box 4, and the output shaft and the nut form a guide post. Its structure is simple, but due to weak axial positioning and the existence of edges on the nut that are likely to damage the combined upper joint 33, Embodiment Two is a preferred embodiment for the guide post and the guide hole.

[0057] Embodiment Five Based on any one of Embodiments One to Four, the grain lifting device further includes a grain elevator 1, the grain elevator 1 is communicated with the upper part of one end of the grain elevator end component 2, and one end of the grain lifting cylinder body 36 is hinged to the lower part of the other end of the grain elevator end component 2.

[0058] Specifically, the upper end of the grain elevator 1 is communicated with the upper part of one end of the grain elevator end component 2, and the lower end of the grain lifting cylinder body 36 is hinged to the lower part of the other end of the grain elevator end component 2.

[0059] Based on the above solution, as Figure 2 shown, the top wall and the side wall of one end of the grain elevator end component 2 are fixedly connected by a rear arc plate 22, the top wall and the side wall of the other end of the grain elevator end component 2 are fixedly connected by a front arc plate 23, the radius of curvature of the rear arc plate 22 is 170 mm - 200 mm, and the radius of curvature of the front arc plate 23 is 200 mm - 220 mm.

[0060] The material is conveyed to the end assembly 2 of the grain elevator 1 by the grain elevator 1, flows along the curve of the rear arc plate 22, reduces the backflow of the material, and guides the material to the other end of the end assembly 2 of the grain elevator 1, and falls under the action of gravity; the front arc plate 23 with an arc can reduce the impact caused by the sudden change of curvature and reduce the impact breakage of the grains. Subsequently, the material is conveyed to the grain bin by the grain lifting cylinder 3. By adopting the rear arc plate 22 and the front arc plate 23 with such a radius of curvature, the smoothness of the material can reach 93%.

[0061] 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.

[0062] On the basis of the above solution, a fixed seat plate 21 is fixed at the other end inside the end assembly 2 of the grain elevator, and the elevator gear box 4 is fixedly connected to the fixed seat plate 21.

[0063] As Figure 1 and Figure 4 shown, in one specific example, one end of the fixed seat plate 21 close to the grain lifting cylinder 3 is inclined downward. As Figure 15 shown, in another example, the fixed seat plate 21 is arranged vertically.

[0064] On the basis of the above solution, as Figure 2 shown, a baffle plate 24 is fixed inside the end assembly 2 of the grain elevator. The baffle plate 24 is located above the elevator gear box 4. One end of the baffle plate 24 is fixedly connected to the inner wall of the side of the end assembly 2 of the grain elevator close to the grain lifting cylinder 3, and the other end thereof is inclined downward and is spaced from the inner wall of the opposite side of the end assembly 2 of the grain elevator.

[0065] The gap between the baffle plate 24 and the inner wall of the end assembly 2 of the grain elevator is used to allow the material to flow downward to the grain lifting cylinder 3, and at the same time, the baffle plate 24 can prevent the material from flowing backward upward.

[0066] Specifically, the baffle plate 24 is a half frustum-shaped, half pyramid-shaped or half cone-shaped with an open bottom and cut along a vertical plane. The baffle plate 24 can also be other shielding structures formed by bending a flat plate. One side wall of the end assembly 2 of the grain elevator close to the grain lifting cylinder 3 has a grain lifting communication port, and the baffle plate 24 is located above the grain lifting communication port.

[0067] Example Six On the basis of any one of Examples One to Five, this example further provides a harvester, including the above-mentioned grain lifting device.

[0068] Specifically, the grain elevator 1 and the grain elevator end assembly 2 are fixed to the frame of the harvester. After the grain lifting cylinder 3 is rotated to be connected to the grain lifting gearbox 4, its upper end communicates with the grain tank of the harvester.

[0069] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0070] In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0071] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0072] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0073] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A grain lifting device, characterized in that, It includes a grain elevator end component (2), a grain lifting cylinder (3), and a lifting gearbox (4). The lifting gearbox (4) is fixed inside the grain elevator end component (2). A coupling lower joint (41) is fixed to the output shaft of the lifting gearbox (4). 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 component (2). A coupling upper joint (33) is fixed to one end of the grain lifting auger (31). The other end of the grain lifting auger (31) is rotatably connected to the other end of the grain lifting cylinder body (36). The coupling upper joint (33) has a guiding hole, and the coupling lower joint (41) has a guiding post; or the coupling upper joint (33) has a guiding post, and the coupling lower joint (41) has a guiding hole; the guiding hole and the guiding post are detachably inserted into each other.

2. The grain lifting device according to claim 1, characterized in that, One end outer wall of the guiding post facing the guiding hole has a guiding post conical surface (43). The diameter of the guiding post conical surface (43) gradually increases from the end facing the guiding hole to the end facing away from the guiding hole. The inner wall of the guiding hole has a guiding hole conical surface (35). The diameter of the guiding hole conical surface (35) gradually decreases from the end facing the guiding post to the end facing away from the guiding post.

3. The grain lifting device according to claim 2, characterized in that, The end wall of the guiding post facing the guiding hole is an arc surface.

4. The grain lifting device according to claim 2, characterized in that, The end of the guiding post facing away from the guiding hole also has a guiding post positioning section (44). The guiding post positioning section (44) is cylindrical. The diameter of the guiding post positioning section (44) is equal to the diameter of the end of the guiding post conical surface (43) facing away from the guiding hole. The end of the guiding hole facing away from the guiding post also has a guiding hole positioning section (34). The guiding hole positioning section (34) is a cylindrical hole. The diameter of the guiding hole positioning section (34) is equal to the diameter of the end of the guiding hole conical surface (35) facing away from the guiding post. And the diameter of the guiding hole positioning section (34) is greater than the diameter of the guiding post positioning section (44).

5. The grain lifting device according to claim 1, characterized in that, A fork (42) is also fixed to the output shaft of the lifting gearbox (4). A lever (37) is also fixed to one end of the grain lifting auger (31). The output shaft of the lifting gearbox (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. The grain lifting device according to claim 5, wherein, At least two pushing arc surfaces are arranged at intervals along the circumference of the fork (42). At least two levers (37) are fixed at intervals along the circumference of the grain lifting auger (31). At least two of the levers (37) are in contact with or separated from at least two of the pushing arc surfaces in a one-to-one correspondence.

7. A grain lifting device according to claim 1, characterized in that, It also includes a grain elevator (1). The grain elevator (1) is communicated with the upper part of one end of the grain elevator end component (2). One end of the grain lifting cylinder body (36) is hinged to the lower part of the other end of the grain elevator end component (2).

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

9. The grain lifting device according to claim 7, wherein A fixed seat plate (21) is fixed at the other end inside the end component (2) of the grain elevator. The lifting tooth box (4) is fixedly connected to the fixed seat plate (21).

10. A grain lifting device according to claim 9, characterized in that, A baffle plate (24) is fixed inside the end component (2) of the grain elevator. The baffle plate (24) is located above the lifting tooth box (4). One end of the baffle plate (24) is fixedly connected to the inner wall of the end component (2) of the grain elevator on the side close to the grain lifting cylinder (3). The other end is inclined obliquely downward and is spaced from the inner wall of the opposite side of the end component (2) of the grain elevator.

11. A harvester, characterized in that, It includes a grain lifting device according to any one of claims 1 - 10.

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