Rollover mechanism for grain box of corn machine

Abstract

The utility model relates to the technical field of modern agricultural machinery technology, and discloses a corn machine grain box tipping mechanism which comprises a grain elevator outlet, a grain elevator, a grain box, a machine frame, an oil cylinder and a frame connecting rod, and a tipping mechanism is arranged on the machine frame and used for controlling dumping of the grain box. According to the tipping mechanism for the grain box of the corn machine, one group of oil cylinders is replaced by the four-connecting-rod mechanism, and the other group of oil cylinders are reserved, so that the tipping mechanism is high in mechanical reliability and simple in structure, meets the design requirements, and can ensure the operation efficiency of the whole machine; the whole mechanism provides power through the oil cylinder, so that the side links work cooperatively, and the tipping operation of the grain box is realized; a plurality of state points of the side link ensure the stability and reliability of the mechanism under different working angles and states; and meanwhile, the rack also plays a role in supporting and fixing, so that the stable and safe operation of the whole system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of modern agricultural machinery, and particularly relates to a tipping mechanism for a grain box of a corn harvester. Background Art

[0002] The ultimate goal of corn harvesting is to obtain corn cobs. However, during the harvesting process, grain shedding occurs when the corn cobs are skinned. Therefore, a grain recovery device is needed to collect the shed grains and send them to the grain box for storage. After the grain box is full, the box body is tilted to dump the grains into a grain transport vehicle;

[0003] As a key component for storing grains in a corn harvester, the grain box is frequently tilted during operation. Therefore, its structural reliability directly affects the performance and operation efficiency of the whole vehicle. Therefore, the tipping mechanism of the grain box needs to be reasonably designed and have a simple and reliable structure to play its maximum role. During the preliminary design of the whole vehicle, limited by space, the tipping mechanism adopts two groups of oil cylinders, that is, the form of pushing first and then tipping. However, adding a group of oil cylinders will increase the complexity of the hydraulic system and the control system, thereby weakening the reliability of the whole vehicle, increasing the failure rate and resulting in high maintenance costs, thus affecting the corn harvesting operation efficiency. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a tipping mechanism for a grain box of a corn harvester, which solves the problems of low structural reliability and low performance and operation efficiency of the whole vehicle.

[0005] To achieve the above object, the utility model is realized through the following technical solutions: A tipping mechanism for a grain box of a corn harvester, characterized in that it includes: a grain elevator outlet, a grain elevator, a grain box, a frame, an oil cylinder, and a connecting rod. A tipping mechanism is provided on the frame for controlling the tipping of the grain box.

[0006] The frame is provided with a base, and vertical rods and inclined rods are symmetrically arranged on the left and right sides of the base. The grain box is arranged between two symmetric vertical rods.

[0007] The tipping mechanism includes an oil cylinder, a connecting rod x, and a connecting rod y. The oil cylinders are arranged on the left and right sides of the base of the frame, and the connecting rod x and the connecting rod y are arranged between the vertical rods of the frame and the grain box.

[0008] One end of the connecting rod x is hinged to the midpoint of the vertical rod of the frame, and the other end of the connecting rod x is hinged to the side surface of the grain box.

[0009] One end of the connecting rod y is hinged to the vertex of the vertical rod of the frame, and the other end of the connecting rod y is hinged to the side surface of the grain box.

[0010] One end of the oil cylinder is hinged to the base of the frame, and the other end of the oil cylinder is hinged to the connecting rod x.

[0011] The utility model provides a tilting mechanism for a grain box of a corn harvester, which has the following beneficial effects:

[0012] The utility model provides a tilting mechanism for a grain box of a corn harvester. A four-bar linkage mechanism is used to replace one set of oil cylinders, and one set of oil cylinders is retained. This solution has high mechanical reliability and a simple structure, meets the design requirements, and can ensure the operation efficiency of the whole vehicle; the whole mechanism is powered by an oil cylinder, enabling the connecting rods to work together to realize the tilting operation of the grain box; multiple state points of the connecting rods ensure the stability and reliability of the mechanism at different working angles and states; at the same time, the frame itself also plays a role in supporting and fixing, ensuring the stable and safe operation of the whole system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a front view structural schematic diagram of the utility model;

[0014] Figure 2 is a schematic diagram of the principle of the four-bar linkage structure of the utility model;

[0015] Figure 3 is a schematic diagram of the retraction of the four-bar linkage mechanism of the utility model;

[0016] Figure 4 is a schematic diagram of the deployment of the four-bar linkage mechanism of the utility model.

[0017] In the figure: 1. Outlet of the grain elevator; 2. Grain elevator; 3. Grain box; 4. Frame; 5. Oil cylinder; 6. Connecting rod x; 7. Connecting rod y. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a tilting mechanism for a grain box of a corn harvester, characterized in that it includes: an outlet 1 of the grain elevator, a grain elevator 2, a grain box 3, a frame 4, an oil cylinder 5, and a connecting rod. A tilting mechanism is provided on the frame 4 for controlling the tilting of the grain box 3.

[0020] The frame 4 is provided with a base, and vertical rods and inclined rods are symmetrically arranged on the left and right sides of the base. The grain box 3 is arranged between the two symmetric vertical rods.

[0021] In this embodiment, the frame 4 plays a crucial role in providing structural support for the entire device, laying a solid foundation for the stability and safety of the device. Through the precise control of the tipping mechanism, the frame 4 can effectively manipulate the seed box 3 for tipping.

[0022] The tipping mechanism includes an oil cylinder 5, a connecting rod x6, and a connecting rod y7. The oil cylinder 5 is arranged on the left and right sides of the base of the frame, and the connecting rod x6 and the connecting rod y7 are arranged between the vertical rod of the frame and the seed box 3.

[0023] One end of the connecting rod x6 is hinged to the midpoint of the vertical rod of the frame 4, and the other end of the connecting rod x6 is hinged to the side of the seed box 3.

[0024] One end of the connecting rod y7 is hinged to the vertex of the vertical rod of the frame 4, and the other end of the connecting rod y7 is hinged to the side of the seed box 3.

[0025] In this embodiment, the introduction of the hinge points enables the connecting rods to rotate flexibly, enabling the entire four-bar linkage mechanism to exhibit unique performance and characteristics during movement. In this way, the connecting rod x6, the connecting rod y7, and their connections to the frame 4 form a part of the four-bar linkage mechanism.

[0026] One end of the oil cylinder 5 is hinged to the base of the frame 4, and the other end of the oil cylinder 5 is hinged to the connecting rod x6.

[0027] In this embodiment, during the tipping process, the tilting angle of the seed box 3 can be precisely adjusted by controlling the telescopic amount of the oil cylinder 5. This design makes the tipping process more flexible and can be adjusted according to actual needs. When the seed box 3 is tipped to a certain angle, the seeds will flow out along the outlet 1 of the seed elevator, thereby realizing the collection and discharge of the seeds.

[0028] In the present utility model, the working steps of the device are as follows:

[0029] During normal corn harvesting operations, the state of the seed box 3 is as Figure 1 shown. The seeds sent by the seed elevator 2 are sent out through the outlet 1 of the seed elevator and fall into the seed box 3. The lower part of the seed box 3 is placed on the frame 4; the principle side view of the tipping mechanism of the seed box 3 is as Figure 2As shown, when the grain box 3 is full, the connecting rod x6 is pushed by the oil cylinder 5 under the action of oil pressure to rotate counterclockwise around the hinge point A1 of the frame 4. The hinge points of the connecting rod x6 pass through A2, A3, and A4 respectively. At this time, the connecting rod y7 rotates counterclockwise around the hinge point a1 of the frame 4. The hinge points of the connecting rod y7 pass through a2, a4, and a3, a4 respectively. The upper hinge point of the oil cylinder reaches point b1 from point B1, and the lower hinge point F of the oil cylinder remains stationary. During normal operation, the four-bar linkage is in the retracted state, as Figure 2 in which A1, A2, a2, and a1 form a four-bar linkage, and the physical state is as Figure 3 shown; when the grain box 3 is full and in the fully tilted state, at this time, the oil cylinder 5 has been fully extended under the action of oil pressure, and the four-bar linkage is in the deployed state, as Figure 2 in which A1, A4, a4, and a1 form a four-bar linkage, and the physical state is as Figure 4 shown; after the grain box 3 has dumped the grains, the oil cylinder 5 retracts under the action of oil pressure, and the four-bar linkage moves reversely according to the above principle and finally returns to normal harvesting operation, as Figure 1 shown.

[0030] Process method:

[0031] S1: As Figure 1 , during normal corn harvesting operation, the grain box 3 is placed on the frame 4, the oil cylinder 5 is in the retracted state, and the four-bar linkage A1, A2, a2, a1 is in the retracted state;

[0032] S2: After the grain box 3 is full, the oil cylinder 5 extends under the action of oil pressure, pushing the connecting rod x6 to rotate counterclockwise around the hinge point A1 of the frame 4. The hinge points of the connecting rod x6 pass through A2, A3, and A4 respectively. At this time, the connecting rod y7 rotates counterclockwise around the hinge point a1 of the frame 4. The hinge points of the connecting rod y7 pass through a2, a4, and a3, a4 respectively. Among them, when A1, A3, and a3 are in a straight line, A3 is the dead point. When the oil cylinder 5 is fully extended, point B1 rotates to point b1, point A2 reaches point A4, and point a2 reaches point a4, forming the four-bar linkage A1, A4, a4, a1. At this time, the four-bar linkage is in the deployed state, and the physical object is as Figure 4 , and at this time, the grain box 3 can dump the grains;

[0033] S3: After the grain box 3 has dumped the grains, the oil cylinder 5 retracts under the action of oil pressure, pulling the connecting rod x6 to rotate clockwise around the hinge point A1 of the frame 4. The hinge points of the connecting rod x6 pass through A4, A3, and A2 respectively. At this time, the connecting rod y7 rotates clockwise around the hinge point a1 of the frame 4. The hinge points of the connecting rod y7 pass through a4, a3, a4, and a2 respectively. Among them, when A1, A3, and a3 are in a straight line, A3 is the dead point. When the oil cylinder 5 is fully retracted, point b1 reaches point B1, point A4 reaches point A2, and point a4 reaches point a2, forming the four-bar linkage A1, A2, a2, a1. At this time, the four-bar linkage is in the retracted state, and the physical object is asFigure 3 , return to the normal harvesting operation state;

[0034] S4: The entire four-bar linkage mechanism completes a grain dumping operation under the action of the oil cylinder 5 according to the above process. When the subsequent harvesting operation requires tipping the grain box 3, just repeat the above process.

[0035] The utility model provides a tilting mechanism for the grain box of a corn harvester, which replaces one set of oil cylinders with a four-bar linkage mechanism and retains one set of oil cylinders 5. This solution has high mechanical reliability and a simple structure, meets the design requirements, and can ensure the operation efficiency of the whole vehicle; the whole mechanism is powered by the oil cylinder 5 to make the connecting rods work together to realize the tilting operation of the grain box 3; multiple state points of the connecting rods ensure the stability and reliability of the mechanism at different working angles and states; at the same time, the frame 4 itself also plays a role in supporting and fixing, ensuring the stable and safe operation of the whole system.

[0036] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0037] The above has introduced the specific embodiments provided by the present utility model in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A corn machine grain box tilting mechanism, characterized in that: include: A grain elevator outlet (1), a grain elevator (2), a grain box (3), a frame (4), an oil cylinder (5), and a connecting rod. The frame (4) is provided with a tipping mechanism for controlling the tipping of the grain box (3); The frame (4) is provided with a base, and vertical rods and oblique rods are symmetrically arranged on the left and right sides of the base, and the grain box (3) is arranged between the two symmetrical vertical rods; The turning mechanism comprises an oil cylinder (5), a connecting rod x (6) and a connecting rod y (7); the oil cylinder (5) is arranged on the left and right sides of the base; the connecting rod x (6) and the connecting rod y (7) are arranged between the frame vertical rod and the grain box (3).

2. A corn machine grain box tilting mechanism according to claim 1, characterized in that: One end of the connecting rod x (6) is hinged to the middle point of the vertical rod of the frame (4), and the other end of the connecting rod x (6) is hinged to the side of the grain box (3).

3. A corn machine grain box tilting mechanism according to claim 2, characterized in that: One end of the connecting rod y (7) is hinged to the top of the vertical rod of the frame (4), and the other end of the connecting rod y (7) is hinged to the side of the grain box (3).

4. A corn machine grain box tilting mechanism according to claim 3, characterized in that: One end of the oil cylinder (5) is hinged to the base of the frame (4), and the other end of the oil cylinder (5) is hinged to the connecting rod x (6).

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