Multipurpose grain lifting device and harvester

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a multipurpose grain lifting device and a harvester, which comprise a grain elevator, a cluster box, a grain recycling box and an adjusting device which are arranged on a machine frame, and a turnover mechanism is further arranged on the machine frame. One end of the turnover mechanism is hinged to the rack, the other end of the turnover mechanism is hinged to the grain recycling box, the turnover mechanism is used for driving the grain recycling box to turn over, and the grain recycling box can directly unload grains without passing through the discharging bin. On the basis of an existing dual-purpose grain lifting device, a grain unloading mode is newly added, the grain unloading speed is increased, and fast grain unloading is achieved so that time can be saved for rush harvesting.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and in particular to a multi-purpose grain lifting device and a harvester. Background Art

[0002] Corn, an important food crop, is widely cultivated across my country, covering approximately 35 million hectares. To ensure food security, agricultural production and grain harvesting are highly valued throughout China. Corn harvesting is a time-consuming and labor-intensive process, and it is crucial to recover as much corn kernels as possible to minimize losses.

[0003] After harvesting corn, the husks typically need to be removed for easier storage and transportation. This process often carries along some of the kernels. Therefore, various screening devices are needed to recover these kernels during subsequent corn processing. There are a wide variety of corn harvesting machines available, including pull-out recovery chutes, dual-purpose kernel hoists, belt-driven mechanical kernel unloading systems controlled by a grain unloading clutch handle, and hydraulic kernel unloading systems controlled by a hydraulic motor. The dual-purpose kernel hoist is particularly popular with customers because it can collect kernels individually or together with the ears.

[0004] Overall, while existing technologies offer a variety of corn kernel recovery methods, some shortcomings remain. For example, the dual-purpose kernel elevator, which collects kernels from the discharge hopper directly below the full kernel recovery bin, is relatively slow. This requires rapid kernel unloading to save time and ensure rapid harvesting. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-purpose grain lifting device, which can add a new grain unloading form on the basis of the existing dual-purpose grain lifting device, thereby increasing the grain unloading speed and realizing rapid grain unloading to save time and rush to harvest.

[0006] Another object of the present invention is to provide a harvester that can, on the basis of an existing harvester model with a dual-purpose grain lifting device, add a new grain unloading form, thereby increasing the grain unloading speed and realizing rapid grain unloading to save time for rushing to harvest.

[0007] The technical solution of the present utility model is achieved as follows:

[0008] A multi-purpose grain lifting device comprises a grain elevator, a grain ear box, a grain recovery box and an adjusting device arranged on a frame, the adjusting device having a grain discharge port and a grain ear discharge port, the grain discharge port being arranged correspondingly to an upper port of the grain recovery box, the grain ear discharge port being arranged correspondingly to the grain ear box, the adjusting device being used to transfer the grains lifted by the grain elevator to the grain ear box or the grain recovery box, a discharge bin being correspondingly arranged on the frame and below the grain recovery box, and the grain recovery box unloading grain through the discharge bin;

[0009] The frame is also provided with a flipping mechanism, one end of the flipping mechanism is hinged to the frame, and the other end is hinged to the grain recovery box. The flipping mechanism is used to drive the grain recovery box to flip, and the grain recovery box can directly unload grain without passing through the discharge bin.

[0010] Furthermore, the flipping mechanism includes a telescopic mechanism and a connecting rod mechanism, one end of the telescopic mechanism is hinged to the frame, and the other end is hinged to the grain recovery box, and two connecting rod mechanisms are symmetrically arranged on the opposite sides of the upper part of the grain recovery box. The telescopic mechanism drives the flipping of the connecting rod mechanism and the grain recovery box.

[0011] Furthermore, two fixing rods are provided on opposite sides of the upper portion of the grain recovery box, and a rotating rod is installed between the left ends of the two fixing rods;

[0012] The connecting rod mechanism includes a first rod body and a second rod body, one end of the first rod body is hinged to the frame through a first hinge seat, and the other end of the first rod body is rotatably connected to the grain recovery box through the rotating rod;

[0013] The second rod is hinged to the frame via a second hinge seat, a long slot is provided at the other end of the second rod, a hinge hole is provided in the middle of the first rod, and a pin assembly is installed in both the hinge hole and the long slot;

[0014] When the grain recovery box is flipped over into place, the upper port of the grain recovery box faces the lower left, and the lower port of the grain recovery box faces upward and is arranged corresponding to the grain discharge port.

[0015] Furthermore, the first hinge seat is located to the left of the second hinge seat.

[0016] Furthermore, at least one crossbeam is connected between the two connecting rod mechanisms, and the two connecting rod mechanisms can operate synchronously.

[0017] Furthermore, the telescopic mechanism adopts a hydraulic cylinder, one end of the hydraulic cylinder is installed on the frame through a third hinge seat, and the other end of the hydraulic cylinder is installed on the left end of the fixed rod through a fourth hinge seat, and the third hinge seat is located to the right of the second hinge seat.

[0018] Furthermore, mounting brackets are provided on the frame and on both sides of the grain recovery box, respectively. The top surface of the mounting bracket is an inclined structure, and the left part of the inclined structure is lower than the right part.

[0019] The second hinge seat and the third hinge seat are sequentially arranged on the inclined structure from left to right, and the first hinge seat is located on the left of the second hinge seat and between the two mounting brackets.

[0020] Furthermore, the sizes of the upper port and the lower port of the grain recovery box are respectively larger than the size of the discharge port of the discharge bin.

[0021] Furthermore, a movable plug plate is provided at the lower port of the grain recovery box for controlling the unloading of the grains in the grain recovery box.

[0022] A harvester comprises a frame and the multi-purpose grain lifting device, wherein the multi-purpose grain lifting device is arranged on the frame.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] Based on the dual-purpose grain lifting device, the present application adds a flipping mechanism to realize the function of flipping the grain recovery box, so that the grain recovery box can directly unload the grains from one of the ports of the grain recovery box without passing through the discharge bin below it, thereby adding a form of unloading grains, which is equivalent to unloading the grains from the discharge bin, and can increase the speed of unloading grains, realize rapid unloading of grain to save time for rushing to harvest, and can further improve efficiency and ease of operation while retaining the existing advantages, which is of great significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is an axonometric view of the utility model's multi-purpose grain lifting device;

[0027] Figure 2This is an axonometric drawing of the multi-purpose grain lifting device of the utility model from a second viewing angle;

[0028] Figure 3 This is an axonometric drawing of the multi-purpose grain lifting device of the utility model from a third viewing angle;

[0029] Figure 4 This is an axonometric view of the grain recovery box and the turning mechanism of the multi-purpose grain lifting device of the utility model, turned left;

[0030] Figure 5 For this utility model Figure 4 Front view of.

[0031] In the picture:

[0032] 1-frame; 101-mounting bracket; 1011-slant structure;

[0033] 2-grain elevator; 3-fruit ear box; 4-adjustment device; 401-grain discharge port; 402-fruit ear discharge port;

[0034] 5-seed recovery box; 501-upper port; 502-lower port; 503-fixed rod; 504-rotating rod;

[0035] 6-discharging bin;

[0036] 7- flip mechanism; 71- telescopic mechanism; 72- connecting rod mechanism; 721- first rod body;

[0037] 722 - second rod body; 7221 - long slot; 723 - pin assembly; 724 - first hinge seat; 725 - second hinge seat; 726 - crossbeam; 727 - third hinge seat; 728 - fourth hinge seat. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0043] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0044] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0045] Example 1

[0046] Reference Figure 1-Figure 5The present embodiment provides a multi-purpose grain lifting device, comprising a grain elevator 2, a fruit ear box 3, a grain recovery box 5 and an adjusting device 4 arranged on a frame 1, the adjusting device 4 having a grain discharge port 401 and a fruit ear discharge port 402, the grain discharge port 401 being arranged correspondingly to the upper port 501 of the grain recovery box 5, the fruit ear discharge port 402 being arranged correspondingly to the fruit ear box 3, the feed port of the adjusting device 4 being arranged correspondingly to the discharge end of the grain elevator 2, the grains transported on the grain elevator 2 directly enter from the feed port of the adjusting device 4, a movable baffle is arranged in the adjusting device 4, the movable baffle can block any outlet of the adjusting device 4, when the movable baffle is at the fruit ear discharge port 402 and blocks When the grains are at the grain ear discharge port 402, the grains are discharged from the grain discharge port 401 into the grain recovery box 5; when the movable baffle is at the grain discharge port 401 and blocks the grain discharge port 401, the grains are discharged from the grain ear discharge port 402 into the grain box 3. Therefore, the adjusting device 4 is used to transfer the grains lifted by the grain elevator 2 to the fruit ear box 3 or the grain recovery box 5. A discharge bin 6 is correspondingly provided on the frame 1 and directly below the grain recovery box 5, and the size of the discharge port of the discharge bin 6 is smaller than the size of the lower port 502 or the upper port 501 of the grain recovery box 5, that is, the sizes of the upper port 501 and the lower port 502 of the grain recovery box 5 are respectively larger than the size of the discharge port of the discharge bin 6. Under normal circumstances, the grains that fall into the grain recovery box 5 can directly fall into the discharge bin 6 below and complete the unloading of grain. This situation belongs to the unloading method in which the grain recovery box 5 unloads grain through the discharge bin 6.

[0047] The frame 1 is also provided with a flipping mechanism 7, one end of the flipping mechanism 7 is hinged to the frame 1, and the other end is hinged to the grain recovery box 5. The flipping mechanism 7 is used to drive the grain recovery box 5 to flip. When the flipping mechanism 7 drives the grain recovery box 5 to flip a certain angle, the grains in the grain recovery box 5 can be directly unloaded without passing through the discharge bin 6. This situation belongs to the unloading method in which the grain recovery box 5 directly unloads the grain without passing through the discharge bin 6.

[0048] In summary, the grain recovery box 5 and the turning mechanism 7 have two states: an initial state and a turning-in-place state. In the initial state, the turning mechanism 7 is retracted, and the grain recovery box 5 unloads grain through the discharge bin 6. In the turning-in-place state, the grain recovery box 5 unloads grain directly without passing through the discharge bin 6.

[0049] The specific structure of the turning mechanism 7 is described below:

[0050] In order to facilitate the description of the overall structure, the front, back, left, and right directions are defined by the position where the multi-purpose grain lifting device is actually installed on the harvester, wherein the ear box is at the rear end of the harvester, such as Figure 1shown.

[0051] The flipping mechanism 7 includes a telescopic mechanism 71 and a connecting rod mechanism 72. One end of the telescopic mechanism 71 is hinged to the frame 1, and the other end is hinged to the grain recovery box 5. Two connecting rod mechanisms 72 are symmetrically arranged on the opposite sides (front and back sides) of the upper part of the grain recovery box 5. The telescopic mechanism 71 drives the flipping of the connecting rod mechanism 72 and the grain recovery box 5.

[0052] Two fixing rods 503 are provided on opposite sides (front and back) of the upper portion of the grain recovery box 5, and a rotating rod 504 is installed between the left ends of the two fixing rods 503;

[0053] The connecting rod mechanism 72 includes a first rod 721 and a second rod 722. One end of the first rod 721 is hinged to the frame 1 through a first hinge seat 724, and the other end of the first rod 721 is rotatably connected to the grain recovery box 5 through the rotating rod 504.

[0054] The second rod 722 is hinged to the frame 1 via a second hinge seat 725. A long slot 7221 is formed at the other end of the second rod 722. A hinge hole is formed in the middle of the first rod 721. A pin assembly 723 is installed in both the hinge hole and the long slot 7221.

[0055] When the grain recovery box 5 is flipped to the left, the upper port 501 of the grain recovery box 5 faces the lower left, and the lower port 502 of the grain recovery box 5 faces upward. Preferably, the lower port 502 of the grain recovery box 5 faces upward and is arranged corresponding to the grain discharge port 401. In this way, when the grain recovery box 5 is in the flipped state, there are two ways to unload grain, as follows:

[0056] The first method is to unload the grain when the grain recovery box 5 is full. When the grain is full, the grain is directly unloaded from the upper port 501 of the grain recovery box 5 (the upper port 501 on the left is turned to the lower left);

[0057] The second method: real-time unloading of grain without waiting for the grain recovery box 5 to be full of grain. Since the grain recovery box 5 is in the flipped position, the lower port 502 of the grain recovery box 5 is facing upward and is arranged corresponding to the grain discharge port 401. Then, the grains discharged from the grain discharge port 401 of the regulating device 4 can directly enter from the lower port 502 of the grain recovery box 5 (facing upward) and be unloaded from the upper port 501 of the grain recovery box 5 (the upper port 501 of the flipped left is facing the lower left).

[0058] In the prior art, a movable insert is provided at the lower port 502 of the grain recovery box 5 for controlling the discharge of the grains in the grain recovery box 5. When a transverse groove is provided at the lower portion of the grain recovery box 5, and when the grain recovery box 5 is in the initial state, the movable insert is inserted transversely into the transverse groove to block the grains in the grain recovery box 5 from flowing out of the lower port 502. Therefore, when the grain recovery box 5 needs to be turned over, the movable insert needs to be inserted into the transverse groove, and then the turning mechanism 7 drives the grain recovery box 5 to turn around in the front-to-back direction. At this time, the upper port 501 of the grain recovery box 5 gradually tilts and turns toward the lower left until the upper port 501 of the grain recovery box 5 faces the lower left and is in the turned-over position. During this turning process, the grains in the grain recovery box 5 gradually pour out from its upper port 501.

[0059] In this embodiment, the first hinge seat 724 is located to the left of the second hinge seat 725. The telescopic mechanism 71 utilizes a hydraulic cylinder, one end of which is mounted on the frame 1 via a third hinge seat 727, and the other end of which is mounted to the left end of the fixed rod 503 via a fourth hinge seat 728. The third hinge seat 727 is located to the right of the second hinge seat 725. It should be noted that the structure of the hinge seat is conventional, and its specific structure will not be described here.

[0060] like Figure 1 and Figure 2 As shown, mounting brackets 101 are provided on the frame 1 and on both sides of the seed recovery box 5. The top surface of the mounting brackets 101 is a sloped structure 1011, and the left portion of the sloped structure 1011 is lower than the right portion. The second hinge seat 725 and the third hinge seat 727 are sequentially provided on the sloped structure 1011 from left to right. The first hinge seat 724 is located to the left of the second hinge seat 725 and between the two mounting brackets 101, that is, the two first rods 721 of the two connecting rod mechanisms 72 are respectively located on the inner sides of the two second rods 722. At least one crossbeam 726 is connected between the two connecting rod mechanisms 72, and the two connecting rod mechanisms 72 can operate synchronously. When there is one hydraulic cylinder, it can be set on any mounting bracket 101; when there are two hydraulic cylinders, the hydraulic cylinders can be symmetrically set on the mounting brackets 101 on both sides, and the two hydraulic cylinders operate synchronously to drive the movement of the grain recovery box 5 and the connecting rod mechanism 72.

[0061] It should be noted that: when the grain recovery box 5 and the turning mechanism 7 are in the initial state, Figure 1 and Figure 2 As shown, at this time, the pin in the pin assembly 723 is at the bottom of the long slot 7221; when the grain recovery box 5 and the flip mechanism 7 are in the flip position, as shown Figure 4 and Figure 5 As shown, the pin in the pin assembly 723 is now at the uppermost end of the long slot 7221. The long slot also serves as a limiter. When the pin in the pin assembly 723 moves from the lowermost end to the uppermost end, the seed recovery box 5 flips to its fully tilted position. Therefore, the length of the long slot 7221 itself serves to limit the tilting angle of the seed recovery box 5. The length of the long slot 7221 can be flexibly designed according to actual needs. Preferably, the long slot 7221 can be a waist-shaped slot.

[0062] Since the sizes of the upper port 501 and the lower port 502 of the grain recovery box 5 are respectively larger than the size of the discharge port of the discharge bin 6, the grain recovery box 5 can be flipped to the left to directly unload grain from its upper port 501, which improves the unloading speed compared to the method of unloading grain from the discharge bin 6.

[0063] On the basis of the dual-purpose grain lifting device, the present application adds a flipping mechanism 7 to realize the function of flipping the grain recovery box 5, so that the grain recovery box 5 can directly unload the grains from one of the ports of the grain recovery box 5 without passing through the discharge bin 6 below it, adding a form of unloading grains (that is, adding a third functional role), and it is equivalent to unloading grains from the discharge bin 6, which can increase the speed of unloading grains and realize rapid unloading of grain to save time for harvesting. It can further improve efficiency and ease of operation while retaining the existing advantages, and is of great significance.

[0064] Example 2

[0065] This embodiment provides a multi-purpose grain lifting device, which differs from the technical solution of embodiment 1 only in that:

[0066] The two first rods 721 of the two connecting rod mechanisms 72 are respectively located on the inner sides of the two second rods 722, and the bottoms of the two first rods 721 respectively use a rotating shaft to replace the two first hinge seats 724, that is, the bottoms of the two first rods 721 are respectively connected to the frame 1 through a rotating shaft.

[0067] Example 3

[0068] A harvester includes a frame 1 and the multi-purpose grain lifting device. The multi-purpose grain lifting device is arranged on the frame 1. The specific installation method can refer to the technical solution of Example 1 and will not be repeated here.

[0069] The beneficial effects of the technical solution of the utility model are:

[0070] The dual-purpose grain lifting device configured on the original harvester CB model realizes the unified collection of grains and ears, and also realizes the separate collection of grains into the grain recovery box 5. However, the method of collecting the separately collected grains at the discharge port of the discharge bin 6 when the grain is full is relatively slow. On the basis of the dual-purpose grain lifting device, the present application adds a flipping mechanism 7 to realize the function of flipping the grain recovery box 5, so that the grain recovery box 5 can directly unload the grains from one of the ports of the grain recovery box 5 without passing through the discharge bin 6 below it, adding a form of unloading grains (i.e., adding a third functional role), and it is equivalent to the method of unloading grains from the discharge bin 6, which can increase the speed of unloading grains and realize rapid unloading of grain to save time and rush to harvest. It can further improve efficiency and ease of operation while retaining the existing advantages, which is of great significance.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-purpose grain lifting device, comprising a grain elevator (2), a fruit ear box (3), a grain recovery box (5) and an adjusting device (4) arranged on a frame (1), wherein the adjusting device (4) has a grain discharge port (401) and a fruit ear discharge port (402), the grain discharge port (401) is arranged correspondingly to the upper port (501) of the grain recovery box (5), the fruit ear discharge port (402) is arranged correspondingly to the fruit ear box (3), the adjusting device (4) is used for transmitting the grains lifted by the grain elevator (2) to the fruit ear box (3) or the grain recovery box (5), a discharge bin (6) is arranged on the frame (1) and below the grain recovery box (5), and the grain recovery box (5) unloads grain through the discharge bin (6), characterized in that The frame (1) is also provided with a turning mechanism (7), one end of which is hinged to the frame (1) and the other end of which is hinged to the grain recovery box (5). The turning mechanism (7) is used to drive the grain recovery box (5) to turn over, so that the grain recovery box (5) can directly unload grain without passing through the discharge bin (6).

2. The multi-purpose grain lifting device according to claim 1, characterized in that: The turning mechanism (7) comprises a telescopic mechanism (71) and a connecting rod mechanism (72); one end of the telescopic mechanism (71) is hinged to the frame (1), and the other end is hinged to the grain recovery box (5); two connecting rod mechanisms (72) are symmetrically arranged on opposite sides of the upper part of the grain recovery box (5); the telescopic mechanism (71) drives the connecting rod mechanism (72) and the grain recovery box (5) to turn over.

3. The multi-purpose grain lifting device according to claim 2, characterized in that: Two fixed rods (503) are provided on opposite sides of the upper portion of the grain recovery box (5), and a rotating rod (504) is installed between the left ends of the two fixed rods (503); The connecting rod mechanism (72) comprises a first rod body (721) and a second rod body (722); one end of the first rod body (721) is hinged to the frame (1) via a first hinge seat (724); the other end of the first rod body (721) is rotatably connected to the grain recovery box (5) via the rotating rod (504); The second rod body (722) is hinged to the frame (1) via a second hinge seat (725); a long slot (7221) is provided at the other end of the second rod body (722); a hinge hole is provided in the middle of the first rod body (721); a pin assembly (723) is installed in both the hinge hole and the long slot (7221); When the grain recovery box (5) is flipped into place, the upper port (501) of the grain recovery box (5) faces the lower left, and the lower port (502) of the grain recovery box (5) faces upward and is arranged corresponding to the grain discharge port (401).

4. The multi-purpose grain lifting device according to claim 3, characterized in that: The first hinge seat (724) is located to the left of the second hinge seat (725).

5. The multi-purpose grain lifting device according to claim 3, characterized in that: At least one crossbeam (726) is connected between the two link mechanisms (72), and the two link mechanisms (72) can operate synchronously.

6. The multi-purpose grain lifting device according to claim 3, characterized in that: The telescopic mechanism (71) adopts a hydraulic cylinder, one end of which is mounted on the frame (1) via a third hinge seat (727), and the other end of which is mounted on the left end of the fixed rod (503) via a fourth hinge seat (728), and the third hinge seat (727) is located to the right of the second hinge seat (725).

7. The multi-purpose grain lifting device according to claim 6, characterized in that: Mounting brackets (101) are respectively provided on the frame (1) and on both sides of the grain recovery box (5); the top surface of the mounting bracket (101) is a slope structure (1011), and the left portion of the slope structure (1011) is lower than the right portion; The second hinge seat (725) and the third hinge seat (727) are sequentially arranged on the inclined structure (1011) from left to right, and the first hinge seat (724) is located to the left of the second hinge seat (725) and the first hinge seat (724) is located between the two mounting brackets (101).

8. The multi-purpose grain lifting device according to claim 1, characterized in that: The sizes of the upper port (501) and the lower port (502) of the grain recovery box (5) are respectively larger than the size of the discharge port of the discharge bin (6).

9. The multi-purpose grain lifting device according to claim 1, characterized in that: A movable plug plate is provided at the lower port (502) of the grain recovery box (5) for controlling the discharge of the grains in the grain recovery box (5).

10. A harvester, comprising a frame (1), characterized in that: It also comprises a multi-purpose grain lifting device according to any one of claims 1 to 9, wherein the multi-purpose grain lifting device is arranged on the frame (1).

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